)]}' { "log": [ { "commit": "0e833d8cfcb52b5ee3ead22cabbab81dea32c3f0", "tree": "0c64533ba9181c014a4b2dcda75c273ae0437dd6", "parents": [ "4f1ba49efafccbc73017f824efa2505c81b247cd", "7b29dc21ea084be7ddfb536994a9cfae95337690" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Sat Jun 04 23:16:00 2011 +0900" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Sat Jun 04 23:16:00 2011 +0900" }, "message": "Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6\n\n* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: (40 commits)\n tg3: Fix tg3_skb_error_unmap()\n net: tracepoint of net_dev_xmit sees freed skb and causes panic\n drivers/net/can/flexcan.c: add missing clk_put\n net: dm9000: Get the chip in a known good state before enabling interrupts\n drivers/net/davinci_emac.c: add missing clk_put\n af-packet: Add flag to distinguish VID 0 from no-vlan.\n caif: Fix race when conditionally taking rtnl lock\n usbnet/cdc_ncm: add missing .reset_resume hook\n vlan: fix typo in vlan_dev_hard_start_xmit()\n net/ipv4: Check for mistakenly passed in non-IPv4 address\n iwl4965: correctly validate temperature value\n bluetooth l2cap: fix locking in l2cap_global_chan_by_psm\n ath9k: fix two more bugs in tx power\n cfg80211: don\u0027t drop p2p probe responses\n Revert \"net: fix section mismatches\"\n drivers/net/usb/catc.c: Fix potential deadlock in catc_ctrl_run()\n sctp: stop pending timers and purge queues when peer restart asoc\n drivers/net: ks8842 Fix crash on received packet when in PIO mode.\n ip_options_compile: properly handle unaligned pointer\n iwlagn: fix incorrect PCI subsystem id for 6150 devices\n ...\n" }, { "commit": "ec764bf083a6ff396234351b51fd236f53c903bf", "tree": "30c0f8232fe10c76651114dea999b93fa2c8ade5", "parents": [ "2e4ceec4edaef6e903422792de4f7f37de98cec6" ], "author": { "name": "Koki Sanagi", "email": "sanagi.koki@jp.fujitsu.com", "time": "Mon May 30 21:48:34 2011 +0000" }, "committer": { "name": "David S. Miller", "email": "davem@davemloft.net", "time": "Thu Jun 02 14:06:31 2011 -0700" }, "message": "net: tracepoint of net_dev_xmit sees freed skb and causes panic\n\nBecause there is a possibility that skb is kfree_skb()ed and zero cleared\nafter ndo_start_xmit, we should not see the contents of skb like skb-\u003elen and\nskb-\u003edev-\u003ename after ndo_start_xmit. But trace_net_dev_xmit does that\nand causes panic by NULL pointer dereference.\nThis patch fixes trace_net_dev_xmit not to see the contents of skb directly.\n\nIf you want to reproduce this panic,\n\n1. Get tracepoint of net_dev_xmit on\n2. Create 2 guests on KVM\n2. Make 2 guests use virtio_net\n4. Execute netperf from one to another for a long time as a network burden\n5. host will panic(It takes about 30 minutes)\n\nSigned-off-by: Koki Sanagi \u003csanagi.koki@jp.fujitsu.com\u003e\nSigned-off-by: David S. Miller \u003cdavem@davemloft.net\u003e\n" }, { "commit": "c4a227d89f758e582fd167bb15245f2704de99ef", "tree": "f5b6e0091e6543c14d1cd7cf1f93e097a96bbd64", "parents": [ "87367a0b71a5188e34a913c05673b5078f71a64d", "f506b3dc0ec454a16d40cab9ee5d75435b39dc50" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Sat May 28 12:55:55 2011 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Sat May 28 12:55:55 2011 -0700" }, "message": "Merge branch \u0027perf-urgent-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip\n\n* \u0027perf-urgent-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (25 commits)\n perf: Fix SIGIO handling\n perf top: Don\u0027t stop if no kernel symtab is found\n perf top: Handle kptr_restrict\n perf top: Remove unused macro\n perf events: initialize fd array to -1 instead of 0\n perf tools: Make sure kptr_restrict warnings fit 80 col terms\n perf tools: Fix build on older systems\n perf symbols: Handle /proc/sys/kernel/kptr_restrict\n perf: Remove duplicate headers\n ftrace: Add internal recursive checks\n tracing: Update btrfs\u0027s tracepoints to use u64 interface\n tracing: Add __print_symbolic_u64 to avoid warnings on 32bit machine\n ftrace: Set ops-\u003eflag to enabled even on static function tracing\n tracing: Have event with function tracer check error return\n ftrace: Have ftrace_startup() return failure code\n jump_label: Check entries limit in __jump_label_update\n ftrace/recordmcount: Avoid STT_FUNC symbols as base on ARM\n scripts/tags.sh: Add magic for trace-events for etags too\n scripts/tags.sh: Fix ctags for DEFINE_EVENT()\n x86/ftrace: Fix compiler warning in ftrace.c\n ...\n" }, { "commit": "8b29336fe01dab3541ebb283daddf9d0168c3f05", "tree": "d64c1a3e00bf66c9ea9b50085f22662871cb5696", "parents": [ "9f1912c48ce829d24789e3e5d499de0d44d3306a", "1adb656e52e1159b0187bf6590df94c7ff44d389" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu May 26 12:14:41 2011 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu May 26 12:14:41 2011 -0700" }, "message": "Merge branch \u0027gpio/next\u0027 of git://git.secretlab.ca/git/linux-2.6\n\n* \u0027gpio/next\u0027 of git://git.secretlab.ca/git/linux-2.6:\n gpio/via: rename VIA local config struct\n basic_mmio_gpio: split into a gpio library and platform device\n gpio: remove some legacy comments in build files\n gpio: add trace events for setting direction and value\n gpio/pca953x: Use handle_simple_irq instead of handle_edge_irq\n gpiolib: export gpiochip_find\n gpio: remove redundant Kconfig depends on GPIOLIB\n basic_mmio_gpio: convert to non-__raw* accessors\n basic_mmio_gpio: support direction registers\n basic_mmio_gpio: support different input/output registers\n basic_mmio_gpio: detect output method at probe time\n basic_mmio_gpio: request register regions\n basic_mmio_gpio: allow overriding number of gpio\n basic_mmio_gpio: convert to platform_{get,set}_drvdata()\n basic_mmio_gpio: remove runtime width/endianness evaluation\n" }, { "commit": "7f34b746f79c1e1f8fd6d09799d133263ae7a504", "tree": "f79b9dac245c04dbb4793cdc281f9c695a98fbb7", "parents": [ "2fc1b6f0d0a719e1e2a30bf076a3a799feaf6af2" ], "author": { "name": "liubo", "email": "liubo2009@cn.fujitsu.com", "time": "Tue Apr 19 09:35:31 2011 +0800" }, "committer": { "name": "Steven Rostedt", "email": "rostedt@goodmis.org", "time": "Wed May 25 22:13:47 2011 -0400" }, "message": "tracing: Update btrfs\u0027s tracepoints to use u64 interface\n\nTo avoid 64-\u003e32 truncating WARNING, update btrfs\u0027s tracepoints.\n\nSigned-off-by: Liu Bo \u003cliubo2009@cn.fujitsu.com\u003e\nLink: http://lkml.kernel.org/r/4DACE6E3.8080200@cn.fujitsu.com\nSigned-off-by: Steven Rostedt \u003crostedt@goodmis.org\u003e\n" }, { "commit": "2fc1b6f0d0a719e1e2a30bf076a3a799feaf6af2", "tree": "3101c47095ef438b6657b7e0dbb57b2f7188666f", "parents": [ "3b6cfdb1714a33ae4d2ca9fbc818a42cf7adee69" ], "author": { "name": "liubo", "email": "liubo2009@cn.fujitsu.com", "time": "Tue Apr 19 09:35:28 2011 +0800" }, "committer": { "name": "Steven Rostedt", "email": "rostedt@goodmis.org", "time": "Wed May 25 22:13:44 2011 -0400" }, "message": "tracing: Add __print_symbolic_u64 to avoid warnings on 32bit machine\n\nFilesystem, like Btrfs, has some \"ULL\" macros, and when these macros are passed\nto tracepoints\u0027__print_symbolic(), there will be 64-\u003e32 truncate WARNINGS during\ncompiling on 32bit box.\n\nSigned-off-by: Liu Bo \u003cliubo2009@cn.fujitsu.com\u003e\nLink: http://lkml.kernel.org/r/4DACE6E0.7000507@cn.fujitsu.com\nSigned-off-by: Steven Rostedt \u003crostedt@goodmis.org\u003e\n" }, { "commit": "3f397c2144e46d9127662fdb6314f21960d8563d", "tree": "ef3401a6ac7e3b394ec10a1c586f5c1949b23edb", "parents": [ "cc300d9ead66235e23c674babb8a4ae4ad4c9db8" ], "author": { "name": "Uwe Kleine-König", "email": "u.kleine-koenig@pengutronix.de", "time": "Fri May 20 00:40:19 2011 -0600" }, "committer": { "name": "Grant Likely", "email": "grant.likely@secretlab.ca", "time": "Fri May 20 00:40:19 2011 -0600" }, "message": "gpio: add trace events for setting direction and value\n\nThis patch allows to trace gpio operations using ftrace\n\nSigned-off-by: Uwe Kleine-König \u003cu.kleine-koenig@pengutronix.de\u003e\nSigned-off-by: Grant Likely \u003cgrant.likely@secretlab.ca\u003e\n" }, { "commit": "eb04f2f04ed1227c266b3219c0aaeda525639718", "tree": "7f224483a3cd0e439cd64a8666ec9dc5ed178a3d", "parents": [ "5765040ebfc9a28d9dcfaaaaf3d25840d922de96", "80d02085d99039b3b7f3a73c8896226b0cb1ba07" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu May 19 18:14:34 2011 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu May 19 18:14:34 2011 -0700" }, "message": "Merge branch \u0027core-rcu-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip\n\n* \u0027core-rcu-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (78 commits)\n Revert \"rcu: Decrease memory-barrier usage based on semi-formal proof\"\n net,rcu: convert call_rcu(prl_entry_destroy_rcu) to kfree\n batman,rcu: convert call_rcu(softif_neigh_free_rcu) to kfree_rcu\n batman,rcu: convert call_rcu(neigh_node_free_rcu) to kfree()\n batman,rcu: convert call_rcu(gw_node_free_rcu) to kfree_rcu\n net,rcu: convert call_rcu(kfree_tid_tx) to kfree_rcu()\n net,rcu: convert call_rcu(xt_osf_finger_free_rcu) to kfree_rcu()\n net/mac80211,rcu: convert call_rcu(work_free_rcu) to kfree_rcu()\n net,rcu: convert call_rcu(wq_free_rcu) to kfree_rcu()\n net,rcu: convert call_rcu(phonet_device_rcu_free) to kfree_rcu()\n perf,rcu: convert call_rcu(swevent_hlist_release_rcu) to kfree_rcu()\n perf,rcu: convert call_rcu(free_ctx) to kfree_rcu()\n net,rcu: convert call_rcu(__nf_ct_ext_free_rcu) to kfree_rcu()\n net,rcu: convert call_rcu(net_generic_release) to kfree_rcu()\n net,rcu: convert call_rcu(netlbl_unlhsh_free_addr6) to kfree_rcu()\n net,rcu: convert call_rcu(netlbl_unlhsh_free_addr4) to kfree_rcu()\n security,rcu: convert call_rcu(sel_netif_free) to kfree_rcu()\n net,rcu: convert call_rcu(xps_dev_maps_release) to kfree_rcu()\n net,rcu: convert call_rcu(xps_map_release) to kfree_rcu()\n net,rcu: convert call_rcu(rps_map_release) to kfree_rcu()\n ...\n" }, { "commit": "1d929b7a84438ad9012c5826f5617d79a3efcef1", "tree": "e8052fe083bc7cb33302bfa8cdc1b1b6f2fc782b", "parents": [ "59a16ead572330deb38e5848151d30ed1af754bc" ], "author": { "name": "Mel Gorman", "email": "mgorman@suse.de", "time": "Wed May 11 15:13:39 2011 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Wed May 11 18:50:45 2011 -0700" }, "message": "mm: tracing: add missing GFP flags to tracing\n\ninclude/linux/gfp.h and include/trace/events/gfpflags.h are out of sync.\nWhen tracing is enabled, certain flags are not recognised and the text\noutput is less useful as a result. Add the missing flags.\n\nSigned-off-by: Mel Gorman \u003cmgorman@suse.de\u003e\nCc: Andrea Arcangeli \u003caarcange@redhat.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "a26ac2455ffcf3be5c6ef92bc6df7182700f2114", "tree": "601697c7c3fd152a1b3f29f43d3a028fc8fefd5f", "parents": [ "12f5f524cafef3ab689929b118f2dfb8bf2be321" ], "author": { "name": "Paul E. McKenney", "email": "paul.mckenney@linaro.org", "time": "Wed Jan 12 14:10:23 2011 -0800" }, "committer": { "name": "Paul E. McKenney", "email": "paulmck@linux.vnet.ibm.com", "time": "Thu May 05 23:16:54 2011 -0700" }, "message": "rcu: move TREE_RCU from softirq to kthread\n\nIf RCU priority boosting is to be meaningful, callback invocation must\nbe boosted in addition to preempted RCU readers. Otherwise, in presence\nof CPU real-time threads, the grace period ends, but the callbacks don\u0027t\nget invoked. If the callbacks don\u0027t get invoked, the associated memory\ndoesn\u0027t get freed, so the system is still subject to OOM.\n\nBut it is not reasonable to priority-boost RCU_SOFTIRQ, so this commit\nmoves the callback invocations to a kthread, which can be boosted easily.\n\nAlso add comments and properly synchronized all accesses to\nrcu_cpu_kthread_task, as suggested by Lai Jiangshan.\n\nSigned-off-by: Paul E. McKenney \u003cpaul.mckenney@linaro.org\u003e\nSigned-off-by: Paul E. McKenney \u003cpaulmck@linux.vnet.ibm.com\u003e\nReviewed-by: Josh Triplett \u003cjosh@joshtriplett.org\u003e\n" }, { "commit": "49cac01e1fa74174d72adb0e872504a7fefd7c01", "tree": "a1ab1974eceea3179a604413955ad8369ba715d7", "parents": [ "a237c1c5bc5dc5c76a21be922dca4826f3eca8ca" ], "author": { "name": "Jens Axboe", "email": "jaxboe@fusionio.com", "time": "Sat Apr 16 13:51:05 2011 +0200" }, "committer": { "name": "Jens Axboe", "email": "jaxboe@fusionio.com", "time": "Sat Apr 16 13:51:05 2011 +0200" }, "message": "block: make unplug timer trace event correspond to the schedule() unplug\n\nIt\u0027s a pretty close match to what we had before - the timer triggering\nwould mean that nobody unplugged the plug in due time, in the new\nscheme this matches very closely what the schedule() unplug now is.\nIt\u0027s essentially the difference between an explicit unplug (IO unplug)\nor an implicit unplug (timer unplug, we scheduled with pending IO\nqueued).\n\nSigned-off-by: Jens Axboe \u003cjaxboe@fusionio.com\u003e\n" }, { "commit": "94b5eb28b41cc79d9713696e0005ae167b5afd1b", "tree": "404680c86a360bfe623b5a287ee87dd5263b5a8e", "parents": [ "d9c97833179036408e53ef5f3f5c7eaf781769bc" ], "author": { "name": "Jens Axboe", "email": "jaxboe@fusionio.com", "time": "Tue Apr 12 10:12:19 2011 +0200" }, "committer": { "name": "Jens Axboe", "email": "jaxboe@fusionio.com", "time": "Tue Apr 12 10:12:19 2011 +0200" }, "message": "block: fixup block IO unplug trace call\n\nIt was removed with the on-stack plugging, readd it and track the\ndepth of requests added when flushing the plug.\n\nSigned-off-by: Jens Axboe \u003cjaxboe@fusionio.com\u003e\n" }, { "commit": "d9c97833179036408e53ef5f3f5c7eaf781769bc", "tree": "3c0a6d7942f61fcdbeb029664400c3a9b7d65494", "parents": [ "109b81296c63228578d4760794d8dd46e02eddfb" ], "author": { "name": "Jens Axboe", "email": "jaxboe@fusionio.com", "time": "Tue Apr 12 10:06:33 2011 +0200" }, "committer": { "name": "Jens Axboe", "email": "jaxboe@fusionio.com", "time": "Tue Apr 12 10:06:33 2011 +0200" }, "message": "block: remove block_unplug_timer() trace point\n\nWe no longer have an unplug timer running, so no point in keeping\nthe trace point.\n\nSigned-off-by: Jens Axboe \u003cjaxboe@fusionio.com\u003e\n" }, { "commit": "212a17ab878305600e607f637d2d8a49d9f7ef25", "tree": "64ad97fcc3d5c49ebd735f5508643c798aeecddf", "parents": [ "baaca1a61497d97cec595fedce03b0a23b983e64", "d9d04879321af570ea7285c6dad92d9c3cd108a1" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Mon Mar 28 15:31:05 2011 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Mon Mar 28 15:31:05 2011 -0700" }, "message": "Merge branch \u0027for-linus-unmerged\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstable\n\n* \u0027for-linus-unmerged\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstable: (45 commits)\n Btrfs: fix __btrfs_map_block on 32 bit machines\n btrfs: fix possible deadlock by clearing __GFP_FS flag\n btrfs: check link counter overflow in link(2)\n btrfs: don\u0027t mess with i_nlink of unlocked inode in rename()\n Btrfs: check return value of btrfs_alloc_path()\n Btrfs: fix OOPS of empty filesystem after balance\n Btrfs: fix memory leak of empty filesystem after balance\n Btrfs: fix return value of setflags ioctl\n Btrfs: fix uncheck memory allocations\n btrfs: make inode ref log recovery faster\n Btrfs: add btrfs_trim_fs() to handle FITRIM\n Btrfs: adjust btrfs_discard_extent() return errors and trimmed bytes\n Btrfs: make btrfs_map_block() return entire free extent for each device of RAID0/1/10/DUP\n Btrfs: make update_reserved_bytes() public\n btrfs: return EXDEV when linking from different subvolumes\n Btrfs: Per file/directory controls for COW and compression\n Btrfs: add datacow flag in inode flag\n btrfs: use GFP_NOFS instead of GFP_KERNEL\n Btrfs: check return value of read_tree_block()\n btrfs: properly access unaligned checksum buffer\n ...\n\nFix up trivial conflicts in fs/btrfs/volumes.c due to plug removal in\nthe block layer.\n" }, { "commit": "1abe9b8a138c9988ba8f7bfded6453649a31541f", "tree": "9fe0c181e78b075b65f6b1802f0a5092e7afbc6a", "parents": [ "240f62c8756df285da11469259b3900f32883168" ], "author": { "name": "liubo", "email": "liubo2009@cn.fujitsu.com", "time": "Thu Mar 24 11:18:59 2011 +0000" }, "committer": { "name": "root", "email": "Chris Mason chris.mason@oracle.com", "time": "Mon Mar 28 05:37:33 2011 -0400" }, "message": "Btrfs: add initial tracepoint support for btrfs\n\nTracepoints can provide insight into why btrfs hits bugs and be greatly\nhelpful for debugging, e.g\n dd-7822 [000] 2121.641088: btrfs_inode_request: root \u003d 5(FS_TREE), gen \u003d 4, ino \u003d 256, blocks \u003d 8, disk_i_size \u003d 0, last_trans \u003d 8, logged_trans \u003d 0\n dd-7822 [000] 2121.641100: btrfs_inode_new: root \u003d 5(FS_TREE), gen \u003d 8, ino \u003d 257, blocks \u003d 0, disk_i_size \u003d 0, last_trans \u003d 0, logged_trans \u003d 0\n btrfs-transacti-7804 [001] 2146.935420: btrfs_cow_block: root \u003d 2(EXTENT_TREE), refs \u003d 2, orig_buf \u003d 29368320 (orig_level \u003d 0), cow_buf \u003d 29388800 (cow_level \u003d 0)\n btrfs-transacti-7804 [001] 2146.935473: btrfs_cow_block: root \u003d 1(ROOT_TREE), refs \u003d 2, orig_buf \u003d 29364224 (orig_level \u003d 0), cow_buf \u003d 29392896 (cow_level \u003d 0)\n btrfs-transacti-7804 [001] 2146.972221: btrfs_transaction_commit: root \u003d 1(ROOT_TREE), gen \u003d 8\n flush-btrfs-2-7821 [001] 2155.824210: btrfs_chunk_alloc: root \u003d 3(CHUNK_TREE), offset \u003d 1103101952, size \u003d 1073741824, num_stripes \u003d 1, sub_stripes \u003d 0, type \u003d DATA\n flush-btrfs-2-7821 [001] 2155.824241: btrfs_cow_block: root \u003d 2(EXTENT_TREE), refs \u003d 2, orig_buf \u003d 29388800 (orig_level \u003d 0), cow_buf \u003d 29396992 (cow_level \u003d 0)\n flush-btrfs-2-7821 [001] 2155.824255: btrfs_cow_block: root \u003d 4(DEV_TREE), refs \u003d 2, orig_buf \u003d 29372416 (orig_level \u003d 0), cow_buf \u003d 29401088 (cow_level \u003d 0)\n flush-btrfs-2-7821 [000] 2155.824329: btrfs_cow_block: root \u003d 3(CHUNK_TREE), refs \u003d 2, orig_buf \u003d 20971520 (orig_level \u003d 0), cow_buf \u003d 20975616 (cow_level \u003d 0)\n btrfs-endio-wri-7800 [001] 2155.898019: btrfs_cow_block: root \u003d 5(FS_TREE), refs \u003d 2, orig_buf \u003d 29384704 (orig_level \u003d 0), cow_buf \u003d 29405184 (cow_level \u003d 0)\n btrfs-endio-wri-7800 [001] 2155.898043: btrfs_cow_block: root \u003d 7(CSUM_TREE), refs \u003d 2, orig_buf \u003d 29376512 (orig_level \u003d 0), cow_buf \u003d 29409280 (cow_level \u003d 0)\n\nHere is what I have added:\n\n1) ordere_extent:\n btrfs_ordered_extent_add\n btrfs_ordered_extent_remove\n btrfs_ordered_extent_start\n btrfs_ordered_extent_put\n\nThese provide critical information to understand how ordered_extents are\nupdated.\n\n2) extent_map:\n btrfs_get_extent\n\nextent_map is used in both read and write cases, and it is useful for tracking\nhow btrfs specific IO is running.\n\n3) writepage:\n __extent_writepage\n btrfs_writepage_end_io_hook\n\nPages are cirtical resourses and produce a lot of corner cases during writeback,\nso it is valuable to know how page is written to disk.\n\n4) inode:\n btrfs_inode_new\n btrfs_inode_request\n btrfs_inode_evict\n\nThese can show where and when a inode is created, when a inode is evicted.\n\n5) sync:\n btrfs_sync_file\n btrfs_sync_fs\n\nThese show sync arguments.\n\n6) transaction:\n btrfs_transaction_commit\n\nIn transaction based filesystem, it will be useful to know the generation and\nwho does commit.\n\n7) back reference and cow:\n\tbtrfs_delayed_tree_ref\n\tbtrfs_delayed_data_ref\n\tbtrfs_delayed_ref_head\n\tbtrfs_cow_block\n\nBtrfs natively supports back references, these tracepoints are helpful on\nunderstanding btrfs\u0027s COW mechanism.\n\n8) chunk:\n\tbtrfs_chunk_alloc\n\tbtrfs_chunk_free\n\nChunk is a link between physical offset and logical offset, and stands for space\ninfomation in btrfs, and these are helpful on tracing space things.\n\n9) reserved_extent:\n\tbtrfs_reserved_extent_alloc\n\tbtrfs_reserved_extent_free\n\nThese can show how btrfs uses its space.\n\nSigned-off-by: Liu Bo \u003cliubo2009@cn.fujitsu.com\u003e\nSigned-off-by: Chris Mason \u003cchris.mason@oracle.com\u003e\n" }, { "commit": "ae005cbed12d0b340b04b59d6f5c56e710b3895d", "tree": "d464865bcc97bea05eab4eba0d10bcad4ec89b93", "parents": [ "3961cdf85b749f6bab50ad31ee97e9277e7a3b70", "0ba0851714beebb800992e5105a79dc3a4c504b0" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Fri Mar 25 09:57:40 2011 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Fri Mar 25 09:57:41 2011 -0700" }, "message": "Merge branch \u0027for_linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4\n\n* \u0027for_linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4: (43 commits)\n ext4: fix a BUG in mb_mark_used during trim.\n ext4: unused variables cleanup in fs/ext4/extents.c\n ext4: remove redundant set_buffer_mapped() in ext4_da_get_block_prep()\n ext4: add more tracepoints and use dev_t in the trace buffer\n ext4: don\u0027t kfree uninitialized s_group_info members\n ext4: add missing space in printk\u0027s in __ext4_grp_locked_error()\n ext4: add FITRIM to compat_ioctl.\n ext4: handle errors in ext4_clear_blocks()\n ext4: unify the ext4_handle_release_buffer() api\n ext4: handle errors in ext4_rename\n jbd2: add COW fields to struct jbd2_journal_handle\n jbd2: add the b_cow_tid field to journal_head struct\n ext4: Initialize fsync transaction ids in ext4_new_inode()\n ext4: Use single thread to perform DIO unwritten convertion\n ext4: optimize ext4_bio_write_page() when no extent conversion is needed\n ext4: skip orphan cleanup if fs has unknown ROCOMPAT features\n ext4: use the nblocks arg to ext4_truncate_restart_trans()\n ext4: fix missing iput of root inode for some mount error paths\n ext4: make FIEMAP and delayed allocation play well together\n ext4: suppress verbose debugging information if malloc-debug is off\n ...\n\nFi up conflicts in fs/ext4/super.c due to workqueue changes\n" }, { "commit": "0562e0bad483d10e9651fbb8f21dc3d0bad57374", "tree": "19f6597f92c028badcb6df360ccac22240378e25", "parents": [ "4596fe07679ff0fae904515691ea747467614871" ], "author": { "name": "Jiaying Zhang", "email": "jiayingz@google.com", "time": "Mon Mar 21 21:38:05 2011 -0400" }, "committer": { "name": "Theodore Ts\u0027o", "email": "tytso@mit.edu", "time": "Mon Mar 21 21:38:05 2011 -0400" }, "message": "ext4: add more tracepoints and use dev_t in the trace buffer\n\n- Add more ext4 tracepoints.\n- Change ext4 tracepoints to use dev_t field with MAJOR/MINOR macros\nso that we can save 4 bytes in the ring buffer on some platforms.\n- Add sync_mode to ext4_da_writepages, ext4_da_write_pages, and\next4_da_writepages_result tracepoints. Also remove for_reclaim\nfield from ext4_da_writepages since it is usually not very useful.\n\nSigned-off-by: Jiaying Zhang \u003cjiayingz@google.com\u003e\nSigned-off-by: \"Theodore Ts\u0027o\" \u003ctytso@mit.edu\u003e\n" }, { "commit": "d3e458d78167102cc961237cfceef6fffc80c0b3", "tree": "e9195c1294daf053614e63ac52b0b44a28479017", "parents": [ "f2e1fbb5f2177227f71c4fc0491e531dd7acd385", "d351cf4603edb2a5bfa9a48d06c425511c63f2a3" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Fri Mar 18 10:46:37 2011 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Fri Mar 18 10:46:37 2011 -0700" }, "message": "Merge branch \u0027for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6\n\n* \u0027for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6: (308 commits)\n ALSA: sound/pci/asihpi: check adapter index in hpi_ioctl\n ALSA: aloop - Fix possible IRQ lock inversion\n ALSA: sound/core: merge list_del()/list_add_tail() to list_move_tail()\n ALSA: ctxfi - use list_move() instead of list_del()/list_add() combination\n ALSA: firewire - msleep needs delay.h\n ALSA: firewire-lib, firewire-speakers: handle packet queueing errors\n ALSA: firewire-lib: allocate DMA buffer separately\n ALSA: firewire-lib: use no-info SYT for packets without SYT sample\n ALSA: add LaCie FireWire Speakers/Griffin FireWave Surround driver\n ALSA: hda - Remove an unused variable in patch_realtek.c\n ALSA: hda - pin-adc-mux-dmic auto-configuration of 92HD8X codecs\n ALSA: hda - fix digital mic selection in mixer on 92HD8X codecs\n ALSA: hda - Move default input-src selection to init part\n ALSA: hda - Initialize special cases for input src in init phase\n ALSA: ctxfi - Clear input settings before initialization\n ALSA: ctxfi - Fix SPDIF status retrieval\n ALSA: ctxfi - Fix incorrect SPDIF status bit mask\n ALSA: ctxfi - Fix microphone boost codes/comments\n ALSA: atiixp - Fix wrong time-out checks during ac-link reset\n ALSA: intel8x0m: append \u0027m\u0027 to \"r_intel8x0\"\n ...\n" }, { "commit": "c55d267de274d308927b60c3e740c1a826832317", "tree": "21b53a8c725d9f9650f60d94b349459d5b8dae10", "parents": [ "61ef46fd45c3c62dc7c880a45dd2aa841b9af8fb", "bc898c97f7ba24def788d9f80786cf028a197122" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Mar 17 17:54:40 2011 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Mar 17 17:54:40 2011 -0700" }, "message": "Merge git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6\n\n* git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6: (170 commits)\n [SCSI] scsi_dh_rdac: Add MD36xxf into device list\n [SCSI] scsi_debug: add consecutive medium errors\n [SCSI] libsas: fix ata list corruption issue\n [SCSI] hpsa: export resettable host attribute\n [SCSI] hpsa: move device attributes to avoid forward declarations\n [SCSI] scsi_debug: Logical Block Provisioning (SBC3r26)\n [SCSI] sd: Logical Block Provisioning update\n [SCSI] Include protection operation in SCSI command trace\n [SCSI] hpsa: fix incorrect PCI IDs and add two new ones (2nd try)\n [SCSI] target: Fix volume size misreporting for volumes \u003e 2TB\n [SCSI] bnx2fc: Broadcom FCoE offload driver\n [SCSI] fcoe: fix broken fcoe interface reset\n [SCSI] fcoe: precedence bug in fcoe_filter_frames()\n [SCSI] libfcoe: Remove stale fcoe-netdev entries\n [SCSI] libfcoe: Move FCOE_MTU definition from fcoe.h to libfcoe.h\n [SCSI] libfc: introduce __fc_fill_fc_hdr that accepts fc_hdr as an argument\n [SCSI] fcoe, libfc: initialize EM anchors list and then update npiv EMs\n [SCSI] Revert \"[SCSI] libfc: fix exchange being deleted when the abort itself is timed out\"\n [SCSI] libfc: Fixing a memory leak when destroying an interface\n [SCSI] megaraid_sas: Version and Changelog update\n ...\n\nFix up trivial conflicts due to whitespace differences in\ndrivers/scsi/libsas/{sas_ata.c,sas_scsi_host.c}\n" }, { "commit": "f74b9444192c60603020c61d7915b72893137edc", "tree": "8b1d16d373234038c2b045c9ceb3c33b93059e8a", "parents": [ "7a6362800cb7d1d618a697a650c7aaed3eb39320", "4ba8216cd90560bc402f52076f64d8546e8aefcb" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Wed Mar 16 17:21:00 2011 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Wed Mar 16 17:21:00 2011 -0700" }, "message": "Merge branch \u0027config\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/bkl\n\n* \u0027config\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/bkl:\n BKL: That\u0027s all, folks\n fs/locks.c: Remove stale FIXME left over from BKL conversion\n ipx: remove the BKL\n appletalk: remove the BKL\n x25: remove the BKL\n ufs: remove the BKL\n hpfs: remove the BKL\n drivers: remove extraneous includes of smp_lock.h\n tracing: don\u0027t trace the BKL\n adfs: remove the big kernel lock\n" }, { "commit": "27b92d4ff2be2359a21ff4acde5b63563ff720e2", "tree": "49691b22fe1318aa68d5ebdff74795f004f0cf8f", "parents": [ "5de0ee574be8f6922a6c33f2fbc7e9b130a2f626", "e58a8947b0264ec1f43ce5deef563b72acf1284f" ], "author": { "name": "Takashi Iwai", "email": "tiwai@suse.de", "time": "Wed Mar 16 17:38:41 2011 +0100" }, "committer": { "name": "Takashi Iwai", "email": "tiwai@suse.de", "time": "Wed Mar 16 17:38:41 2011 +0100" }, "message": "Merge branch \u0027topic/asoc\u0027 into for-linus\n" }, { "commit": "72f7d322fd60ce1a0579136dec7b26b0801ded4b", "tree": "a1b6bbe30bcff290018ec9618128e4f82012dd29", "parents": [ "9143a9612277abc6e4ddced2bc54a120734834c6" ], "author": { "name": "Martin K. Petersen", "email": "martin.petersen@oracle.com", "time": "Tue Mar 08 02:03:59 2011 -0500" }, "committer": { "name": "James Bottomley", "email": "James.Bottomley@suse.de", "time": "Mon Mar 14 18:36:02 2011 -0500" }, "message": "[SCSI] Include protection operation in SCSI command trace\n\nWhen debugging DIF/DIX it is very helpful to be able to see which DIX\noperation is associated with the scsi_cmnd. Include the protection op in\nthe SCSI command trace.\n\nSigned-off-by: Martin K. Petersen \u003cmartin.petersen@oracle.com\u003e\nSigned-off-by: James Bottomley \u003cJames.Bottomley@suse.de\u003e\n" }, { "commit": "ca9da2dd63b0b32de1b693953dff66cadeb6400b", "tree": "0a2fe573eb42e0eefe78c3fc4c52fee896969ce9", "parents": [ "ad440ad66f1617194738bf674dfe2d38978ac54d" ], "author": { "name": "David Sharp", "email": "dhsharp@google.com", "time": "Fri Dec 03 16:13:23 2010 -0800" }, "committer": { "name": "Steven Rostedt", "email": "rostedt@goodmis.org", "time": "Thu Mar 10 10:34:31 2011 -0500" }, "message": "tracing: Fix event alignment: skb:kfree_skb\n\nAcked-by: Neil Horman \u003cnhorman@tuxdriver.com\u003e\nSigned-off-by: David Sharp \u003cdhsharp@google.com\u003e\nLKML-Reference: \u003c1291421609-14665-10-git-send-email-dhsharp@google.com\u003e\nSigned-off-by: Steven Rostedt \u003crostedt@goodmis.org\u003e\n" }, { "commit": "ad440ad66f1617194738bf674dfe2d38978ac54d", "tree": "af708601527c581ff2890a537e48793c31538f71", "parents": [ "d5bf2ff07230a4a1b73ecb22363f77c02e1d85ab" ], "author": { "name": "David Sharp", "email": "dhsharp@google.com", "time": "Fri Dec 03 16:13:22 2010 -0800" }, "committer": { "name": "Steven Rostedt", "email": "rostedt@goodmis.org", "time": "Thu Mar 10 10:34:28 2011 -0500" }, "message": "tracing: Fix event alignment: mce:mce_record\n\nSigned-off-by: David Sharp \u003cdhsharp@google.com\u003e\nLKML-Reference: \u003c1291421609-14665-9-git-send-email-dhsharp@google.com\u003e\nSigned-off-by: Steven Rostedt \u003crostedt@goodmis.org\u003e\n" }, { "commit": "b5e3008e489f5a00c6d5db914a4c4338c9ef5e8b", "tree": "94d4798d5d1dec33ae6d4b6b159e42be8c8c0e7f", "parents": [ "140e4f2d1cd816aed196705c036763313c0e4bd3" ], "author": { "name": "David Sharp", "email": "dhsharp@google.com", "time": "Fri Dec 03 16:13:20 2010 -0800" }, "committer": { "name": "Steven Rostedt", "email": "rostedt@goodmis.org", "time": "Thu Mar 10 10:34:20 2011 -0500" }, "message": "tracing: Fix event alignment: module:module_request\n\nAcked-by: Li Zefan \u003clizf@cn.fujitsu.com\u003e\nSigned-off-by: David Sharp \u003cdhsharp@google.com\u003e\nLKML-Reference: \u003c1291421609-14665-7-git-send-email-dhsharp@google.com\u003e\nSigned-off-by: Steven Rostedt \u003crostedt@goodmis.org\u003e\n" }, { "commit": "2d3a8497f8cc5aca14b722cd37d51f6c15ff9f74", "tree": "2e0013fdc1eec486a425e666a885b04a1c37befb", "parents": [ "255bb490c8c27eed484d538efe6ef6a7473bd3f6" ], "author": { "name": "Tao Ma", "email": "boyu.mt@taobao.com", "time": "Thu Mar 03 10:53:20 2011 -0500" }, "committer": { "name": "Jens Axboe", "email": "jaxboe@fusionio.com", "time": "Thu Mar 03 10:53:20 2011 -0500" }, "message": "blktrace: Remove blk_fill_rwbs_rq.\n\nIf we enable trace events to trace block actions, We use\nblk_fill_rwbs_rq to analyze the corresponding actions\nin request\u0027s cmd_flags, but we only choose the minor 2 bits\nfrom it, so most of other flags(e.g, REQ_SYNC) are missing.\nFor example, with a sync write we get:\nwrite_test-2409 [001] 160.013869: block_rq_insert: 3,64 W 0 () 258135 + \u003d\n8 [write_test]\n\nSince now we have integrated the flags of both bio and request,\nit is safe to pass rq-\u003ecmd_flags directly to blk_fill_rwbs and\nblk_fill_rwbs_rq isn\u0027t needed any more.\n\nWith this patch, after a sync write we get:\nwrite_test-2417 [000] 226.603878: block_rq_insert: 3,64 WS 0 () 258135 +\u003d\n 8 [write_test]\n\nSigned-off-by: Tao Ma \u003cboyu.mt@taobao.com\u003e\nAcked-by: Jeff Moyer \u003cjmoyer@redhat.com\u003e\nSigned-off-by: Jens Axboe \u003cjaxboe@fusionio.com\u003e\n" }, { "commit": "f51b452bed4ae5c20e1f8a790e4ed8663d909a40", "tree": "3c028a2cb74253d74cf4ed15b2900531217cb6b6", "parents": [ "4688a066ecf60086ea82f68edb3b036b567d2c08" ], "author": { "name": "Arnd Bergmann", "email": "arnd@arndb.de", "time": "Tue Jan 25 21:54:50 2011 +0100" }, "committer": { "name": "Arnd Bergmann", "email": "arnd@arndb.de", "time": "Wed Mar 02 00:02:39 2011 +0100" }, "message": "tracing: don\u0027t trace the BKL\n\nNo reason to trace it when the last user is gone.\n\nSigned-off-by: Arnd Bergmann \u003carnd@arndb.de\u003e\nAcked-by: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\n" }, { "commit": "e4a9ea5ee7c8812a7bf0c3fb725ceeaa3d4c2fcc", "tree": "1b25668508fa302a6ada053c895cd55727f798f1", "parents": [ "9ffdc6c37df131f89d52001e0ef03091b158826f" ], "author": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Thu Jan 27 09:15:30 2011 -0500" }, "committer": { "name": "Steven Rostedt", "email": "rostedt@goodmis.org", "time": "Wed Feb 02 21:37:13 2011 -0500" }, "message": "tracing: Replace trace_event struct array with pointer array\n\nCurrently the trace_event structures are placed in the _ftrace_events\nsection, and at link time, the linker makes one large array of all\nthe trace_event structures. On boot up, this array is read (much like\nthe initcall sections) and the events are processed.\n\nThe problem is that there is no guarantee that gcc will place complex\nstructures nicely together in an array format. Two structures in the\nsame file may be placed awkwardly, because gcc has no clue that they\nare suppose to be in an array.\n\nA hack was used previous to force the alignment to 4, to pack the\nstructures together. But this caused alignment issues with other\narchitectures (sparc).\n\nInstead of packing the structures into an array, the structures\u0027 addresses\nare now put into the _ftrace_event section. As pointers are always the\nnatural alignment, gcc should always pack them tightly together\n(otherwise initcall, extable, etc would also fail).\n\nBy having the pointers to the structures in the section, we can still\niterate the trace_events without causing unnecessary alignment problems\nwith other architectures, or depending on the current behaviour of\ngcc that will likely change in the future just to tick us kernel developers\noff a little more.\n\nThe _ftrace_event section is also moved into the .init.data section\nas it is now only needed at boot up.\n\nSuggested-by: David Miller \u003cdavem@davemloft.net\u003e\nCc: Mathieu Desnoyers \u003cmathieu.desnoyers@efficios.com\u003e\nAcked-by: David S. Miller \u003cdavem@davemloft.net\u003e\nSigned-off-by: Steven Rostedt \u003crostedt@goodmis.org\u003e\n" }, { "commit": "c358e640a669b528b32af5442c92b856de623e1c", "tree": "c40ceac6b635e6fdb00ee8eb4c5ab96044ca7503", "parents": [ "67b22517d8e48a97e1d2ab10d095c538bbb2374c" ], "author": { "name": "Dimitris Papastamos", "email": "dp@opensource.wolfsonmicro.com", "time": "Fri Jan 21 15:29:02 2011 +0000" }, "committer": { "name": "Mark Brown", "email": "broonie@opensource.wolfsonmicro.com", "time": "Fri Jan 21 18:30:51 2011 +0000" }, "message": "ASoC: soc-cache: Add trace event for snd_soc_cache_sync()\n\nThis patch makes it easy to see when the syncing process begins and\nends. You can also enable the snd_soc_reg_write tracepoint to see\nwhich registers are being synced.\n\nSigned-off-by: Dimitris Papastamos \u003cdp@opensource.wolfsonmicro.com\u003e\nAcked-by: Liam Girdwood \u003clrg@slimlogic.co.uk\u003e\nSigned-off-by: Mark Brown \u003cbroonie@opensource.wolfsonmicro.com\u003e\n" }, { "commit": "f9ee7f60d6f37ae0184812b4c59b3869f875768b", "tree": "6c30a7e94b90cfa3a43cda45f4bdb2f254f3ba10", "parents": [ "16c1020362083b320868c0deef492249089c3cd3", "1161ec944916069ceec21c487e30247d9ff22857", "76d1f7bfcd5872056902c5a88b5fcd5d4d00a7a9", "afa14e7c553ebe45844d76208f66017a43abd0e2", "7c46d8da09df22361d1d43465c4f1b06cecaf25f" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Sat Jan 15 12:45:00 2011 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Sat Jan 15 12:45:00 2011 -0800" }, "message": "Merge branches \u0027core-fixes-for-linus\u0027, \u0027x86-fixes-for-linus\u0027, \u0027timers-fixes-for-linus\u0027 and \u0027perf-fixes-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip\n\n* \u0027core-fixes-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:\n rcu: avoid pointless blocked-task warnings\n rcu: demote SRCU_SYNCHRONIZE_DELAY from kernel-parameter status\n rtmutex: Fix comment about why new_owner can be NULL in wake_futex_pi()\n\n* \u0027x86-fixes-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:\n x86, olpc: Add missing Kconfig dependencies\n x86, mrst: Set correct APB timer IRQ affinity for secondary cpu\n x86: tsc: Fix calibration refinement conditionals to avoid divide by zero\n x86, ia64, acpi: Clean up x86-ism in drivers/acpi/numa.c\n\n* \u0027timers-fixes-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:\n timekeeping: Make local variables static\n time: Rename misnamed minsec argument of clocks_calc_mult_shift()\n\n* \u0027perf-fixes-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:\n tracing: Remove syscall_exit_fields\n tracing: Only process module tracepoints once\n perf record: Add \"nodelay\" mode, disabled by default\n perf sched: Fix list of events, dropping unsupported \u0027:r\u0027 modifier\n Revert \"perf tools: Emit clearer message for sys_perf_event_open ENOENT return\"\n perf top: Fix annotate segv\n perf evsel: Fix order of event list deletion\n" }, { "commit": "c94fbe1d9e1e9b1a1f82eb0b53b1cf53bcf9712b", "tree": "0191c752be8ea739136106f6cca95df61cffc676", "parents": [ "4ad9f594d7199c99f6b1b3ef88c64bd5920a4592" ], "author": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Fri Jan 14 11:25:58 2011 -0500" }, "committer": { "name": "Steven Rostedt", "email": "rostedt@goodmis.org", "time": "Fri Jan 14 11:25:58 2011 -0500" }, "message": "tracing: Only process module tracepoints once\n\nThe commit:\n\n 9f987b3141f086de27832514aad9f50a53f754\n tracing: Include module.h in define_trace.h\n\nonly solved half the problem. If the trace/events/module.h header is\nincluded at the time of define_trace.h (or in ftrace.h within it),\nthe module.h TRACE_SYSTEM will override the current TRACE_SYSTEM\nmacro.\n\nSince define_trace.h is included when CREATE_TRACE_POINTS is set,\nand the first thing it does is to #undef CREATE_TRACE_POINTS,\nby placing the module.h TRACE_SYSTEM inside a\n #ifdef CREATE_TRACE_POINTS\nwe can prevent it from overriding the TRACE_SYSTEM that is\nbeing processed, and still process the module.h tracepoints\nwhen the module code defines CREATE_TRACE_POINTS and includes\nthe trace/events/module.h header.\n\nAs with commit 9f987b3141, this is only an issue if module.h\nis not included before the trace/events/\u003cevent\u003e.h file is\nincluded, which (luckily) has not happened yet.\n\nReported-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nSigned-off-by: Steven Rostedt \u003crostedt@goodmis.org\u003e\n" }, { "commit": "f3a310bc4e5ce7e55e1c8e25c31e63af017f3e50", "tree": "0c78777bd505f44edeb9bbcc50fb3154896574aa", "parents": [ "9927af740b1b9b1e769310bd0b91425e8047b803" ], "author": { "name": "Mel Gorman", "email": "mel@csn.ul.ie", "time": "Thu Jan 13 15:46:00 2011 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Jan 13 17:32:34 2011 -0800" }, "message": "mm: vmscan: rename lumpy_mode to reclaim_mode\n\nWith compaction being used instead of lumpy reclaim, the name lumpy_mode\nand associated variables is a bit misleading. Rename lumpy_mode to\nreclaim_mode which is a better fit. There is no functional change.\n\nSigned-off-by: Mel Gorman \u003cmel@csn.ul.ie\u003e\nCc: Andrea Arcangeli \u003caarcange@redhat.com\u003e\nCc: KOSAKI Motohiro \u003ckosaki.motohiro@jp.fujitsu.com\u003e\nCc: Rik van Riel \u003criel@redhat.com\u003e\nAcked-by: Johannes Weiner \u003channes@cmpxchg.org\u003e\nCc: Andy Whitcroft \u003capw@shadowen.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "ee64fc9354e515a79c7232cfde65c88ec627308b", "tree": "fb5fb6c0045ff5467ed5870d5f64806784deba2d", "parents": [ "b7aba6984dc048503b69c2a885098cdd430832bf" ], "author": { "name": "Mel Gorman", "email": "mel@csn.ul.ie", "time": "Thu Jan 13 15:45:55 2011 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Jan 13 17:32:33 2011 -0800" }, "message": "mm: vmscan: convert lumpy_mode into a bitmask\n\nCurrently lumpy_mode is an enum and determines if lumpy reclaim is off,\nsyncronous or asyncronous. In preparation for using compaction instead of\nlumpy reclaim, this patch converts the flags into a bitmap.\n\nSigned-off-by: Mel Gorman \u003cmel@csn.ul.ie\u003e\nCc: Andrea Arcangeli \u003caarcange@redhat.com\u003e\nCc: KOSAKI Motohiro \u003ckosaki.motohiro@jp.fujitsu.com\u003e\nCc: Rik van Riel \u003criel@redhat.com\u003e\nCc: Johannes Weiner \u003channes@cmpxchg.org\u003e\nCc: Andy Whitcroft \u003capw@shadowen.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "b7aba6984dc048503b69c2a885098cdd430832bf", "tree": "1f682189bd967feaf28c2978445c7ebe82116185", "parents": [ "2d90508f638241a2e7422d884767398296ebe720" ], "author": { "name": "Mel Gorman", "email": "mel@csn.ul.ie", "time": "Thu Jan 13 15:45:54 2011 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Jan 13 17:32:33 2011 -0800" }, "message": "mm: compaction: add trace events for memory compaction activity\n\nIn preparation for a patches promoting the use of memory compaction over\nlumpy reclaim, this patch adds trace points for memory compaction\nactivity. Using them, we can monitor the scanning activity of the\nmigration and free page scanners as well as the number and success rates\nof pages passed to page migration.\n\nSigned-off-by: Mel Gorman \u003cmel@csn.ul.ie\u003e\nCc: Andrea Arcangeli \u003caarcange@redhat.com\u003e\nCc: KOSAKI Motohiro \u003ckosaki.motohiro@jp.fujitsu.com\u003e\nCc: Rik van Riel \u003criel@redhat.com\u003e\nCc: Johannes Weiner \u003channes@cmpxchg.org\u003e\nCc: Andy Whitcroft \u003capw@shadowen.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "71927e84e0aebfbe5a91565c3b207af25a4e9162", "tree": "8271f6d2008405bd392893ab0f7a4bd25653dc90", "parents": [ "6585027a5e8cb490e3a761b2f3f3c3acf722aff2" ], "author": { "name": "Wu Fengguang", "email": "fengguang.wu@intel.com", "time": "Thu Jan 13 15:45:46 2011 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Jan 13 17:32:32 2011 -0800" }, "message": "writeback: trace wakeup event for background writeback\n\nThis tracks when balance_dirty_pages() tries to wakeup the flusher thread\nfor background writeback (if it was not started already).\n\nSuggested-by: Christoph Hellwig \u003chch@infradead.org\u003e\nSigned-off-by: Wu Fengguang \u003cfengguang.wu@intel.com\u003e\nCc: Jan Kara \u003cjack@suse.cz\u003e\nCc: Johannes Weiner \u003channes@cmpxchg.org\u003e\nCc: Dave Chinner \u003cdavid@fromorbit.com\u003e\nCc: Jan Engelhardt \u003cjengelh@medozas.de\u003e\nCc: Jens Axboe \u003caxboe@kernel.dk\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "275220f0fcff1adf28a717076e00f575edf05fda", "tree": "d249bccc80c64443dab211639050c4fb14332648", "parents": [ "fe3c560b8a22cb28e54fe8950abef38e88d75831", "81c5e2ae33c4b19e53966b427e33646bf6811830" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Jan 13 10:45:01 2011 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Jan 13 10:45:01 2011 -0800" }, "message": "Merge branch \u0027for-2.6.38/core\u0027 of git://git.kernel.dk/linux-2.6-block\n\n* \u0027for-2.6.38/core\u0027 of git://git.kernel.dk/linux-2.6-block: (43 commits)\n block: ensure that completion error gets properly traced\n blktrace: add missing probe argument to block_bio_complete\n block cfq: don\u0027t use atomic_t for cfq_group\n block cfq: don\u0027t use atomic_t for cfq_queue\n block: trace event block fix unassigned field\n block: add internal hd part table references\n block: fix accounting bug on cross partition merges\n kref: add kref_test_and_get\n bio-integrity: mark kintegrityd_wq highpri and CPU intensive\n block: make kblockd_workqueue smarter\n Revert \"sd: implement sd_check_events()\"\n block: Clean up exit_io_context() source code.\n Fix compile warnings due to missing removal of a \u0027ret\u0027 variable\n fs/block: type signature of major_to_index(int) to major_to_index(unsigned)\n block: convert !IS_ERR(p) \u0026\u0026 p to !IS_ERR_NOR_NULL(p)\n cfq-iosched: don\u0027t check cfqg in choose_service_tree()\n fs/splice: Pull buf-\u003eops-\u003econfirm() from splice_from_pipe actors\n cdrom: export cdrom_check_events()\n sd: implement sd_check_events()\n sr: implement sr_check_events()\n ...\n" }, { "commit": "66dc918d42eaaa9afe42a47d07526765162017a9", "tree": "947411841773dfb076f1aa78bc5be868bc4281a6", "parents": [ "b2034d474b7e1e8578bd5c2977024b51693269d9", "6db9a0f326d3144d790d9479309df480a8f562e4" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Jan 13 10:32:54 2011 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Jan 13 10:32:54 2011 -0800" }, "message": "Merge branch \u0027for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6\n\n* \u0027for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6: (348 commits)\n ALSA: hda - Fix NULL-derefence with a single mic in STAC auto-mic detection\n ALSA: hda - Add missing NID 0x19 fixup for Sony VAIO\n ALSA: hda - Fix ALC275 enable hardware EQ for SONY VAIO\n ALSA: oxygen: fix Xonar DG input\n ALSA: hda - Fix EAPD on Lenovo NB ALC269 to low\n ALSA: hda - Fix missing EAPD for Acer 4930G\n ALSA: hda: Disable 4/6 channels on some NVIDIA GPUs.\n ALSA: hda - Add static_hdmi_pcm option to HDMI codec parser\n ALSA: hda - Don\u0027t refer ELD when unplugged\n ASoC: tpa6130a2: Fix compiler warning\n ASoC: tlv320dac33: Add DAPM selection for LOM invert\n ASoC: DMIC codec: Adding a generic DMIC codec\n ALSA: snd-usb-us122l: Fix missing NULL checks\n ALSA: snd-usb-us122l: Fix MIDI output\n ASoC: soc-cache: Fix invalid memory access during snd_soc_lzo_cache_sync()\n ASoC: Fix section mismatch in wm8995.c\n ALSA: oxygen: add S/PDIF source selection for Claro cards\n ALSA: oxygen: fix CD/MIDI for X-Meridian (2G)\n ASoC: fix migor audio build\n ALSA: include delay.h for msleep in Xonar DG support\n ...\n" }, { "commit": "1896a1346a80b2dac1f63a338f1e2ee0b6484646", "tree": "825b59dd33886398f541488d2b5eb65cbd353bdb", "parents": [ "e691d24e9c5007486bef59c589c2a2d784e0c30b", "fa63bd4aa53aecc38956cbdd50f8ff9ed0d6d5ba" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Jan 13 10:24:07 2011 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Jan 13 10:24:07 2011 -0800" }, "message": "Merge branch \u0027for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/lrg/voltage-2.6\n\n* \u0027for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/lrg/voltage-2.6: (45 commits)\n regulator: missing index in PTR_ERR() in isl6271a_probe()\n regulator: Assign return value of mc13xxx_reg_rmw to ret\n regulator: Add initial per-regulator debugfs support\n regulator: Make regulator_has_full_constraints a bool\n regulator: Clean up logging a bit\n regulator: Optimise out noop voltage changes\n regulator: Add API to re-apply voltage to hardware\n regulator: Staticise non-exported functions in mc13892\n regulator: Only notify voltage changes when they succeed\n regulator: Provide a selector based set_voltage_sel() operation\n regulator: Factor out voltage set operation into a separate function\n regulator: Convert WM8994 to use get_voltage_sel()\n regulator: Convert WM835x to use get_voltage_sel()\n regulator: Allow modular build of mc13xxx-core\n regulator: support PMIC mc13892\n make mc13783 regulator code generic\n Change the register name definitions for mc13783\n mach-ux500: Updated and connected ab8500 regulator board configuration\n regulators: Removed macros for initialization of ab8500 regulators\n regulators: Added verbose debug messages to ab8500 regulators\n ...\n" }, { "commit": "55065bc52795faae549abfb912aacc622dd63876", "tree": "63683547e41ed459a2a8747eeafb5e969633d54f", "parents": [ "008d23e4852d78bb2618f2035f8b2110b6a6b968", "e5c301428294cb8925667c9ee39f817c4ab1c2c9" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Jan 13 10:14:24 2011 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Jan 13 10:14:24 2011 -0800" }, "message": "Merge branch \u0027kvm-updates/2.6.38\u0027 of git://git.kernel.org/pub/scm/virt/kvm/kvm\n\n* \u0027kvm-updates/2.6.38\u0027 of git://git.kernel.org/pub/scm/virt/kvm/kvm: (142 commits)\n KVM: Initialize fpu state in preemptible context\n KVM: VMX: when entering real mode align segment base to 16 bytes\n KVM: MMU: handle \u0027map_writable\u0027 in set_spte() function\n KVM: MMU: audit: allow audit more guests at the same time\n KVM: Fetch guest cr3 from hardware on demand\n KVM: Replace reads of vcpu-\u003earch.cr3 by an accessor\n KVM: MMU: only write protect mappings at pagetable level\n KVM: VMX: Correct asm constraint in vmcs_load()/vmcs_clear()\n KVM: MMU: Initialize base_role for tdp mmus\n KVM: VMX: Optimize atomic EFER load\n KVM: VMX: Add definitions for more vm entry/exit control bits\n KVM: SVM: copy instruction bytes from VMCB\n KVM: SVM: implement enhanced INVLPG intercept\n KVM: SVM: enhance mov DR intercept handler\n KVM: SVM: enhance MOV CR intercept handler\n KVM: SVM: add new SVM feature bit names\n KVM: cleanup emulate_instruction\n KVM: move complete_insn_gp() into x86.c\n KVM: x86: fix CR8 handling\n KVM guest: Fix kvm clock initialization when it\u0027s configured out\n ...\n" }, { "commit": "02fa3ec01a0df7a8ccc356d8e245a9a1423b3596", "tree": "c80875047e60cc495892bd61d51b0cba6e7ee23b", "parents": [ "3a93f2a9f4d8f73d74c0e552feb68a10f778a219" ], "author": { "name": "Mark Brown", "email": "broonie@opensource.wolfsonmicro.com", "time": "Wed Nov 10 14:38:30 2010 +0000" }, "committer": { "name": "Liam Girdwood", "email": "lrg@slimlogic.co.uk", "time": "Wed Jan 12 14:33:00 2011 +0000" }, "message": "regulator: Add basic trace facilities\n\nProvide some basic trace facilities to the regulator API. We generate\nevents on regulator enable, disable and voltage setting over the actual\nhardware operations (which are assumed to be the expensive ones which\nrequire interaction with the actual device). This is intended to facilitate\ndebug of the performance and behaviour with consumers allowing unified\ntraces to be generated including the regulator operations within the\ncontext of the other components of the system.\n\nFor enable we log the explicit delay for the voltage ramp separately to\nthe interaction with the hardware to highlight the time consumed in I/O.\nWe should add a similar delay for voltage changes, though there the\nrelatively small magnitude of the changes in the context of the I/O\ncosts makes it much less critical for most regulators.\n\nOnly hardware interactions are currently traced as the primary focus is\non the performance and synchronisation of actual hardware interactions.\nAdditional tracepoints for debugging of the logical operations can be\nadded later if required.\n\nSigned-off-by: Mark Brown \u003cbroonie@opensource.wolfsonmicro.com\u003e\nSigned-off-by: Liam Girdwood \u003clrg@slimlogic.co.uk\u003e\n" }, { "commit": "0730388b97d20cc568c25b42b9a23b28959b481f", "tree": "6e0cdedd190b73575314138f8b67ee064afa3ee2", "parents": [ "c9b263d2be9c535b410f6617710534f798bf0ff0" ], "author": { "name": "Xiao Guangrong", "email": "xiaoguangrong@cn.fujitsu.com", "time": "Mon Nov 01 16:59:39 2010 +0800" }, "committer": { "name": "Avi Kivity", "email": "avi@redhat.com", "time": "Wed Jan 12 11:28:57 2011 +0200" }, "message": "KVM: cleanup async_pf tracepoints\n\nUse \u0027DECLARE_EVENT_CLASS\u0027 to cleanup async_pf tracepoints\n\nAcked-by: Gleb Natapov \u003cgleb@redhat.com\u003e\nSigned-off-by: Xiao Guangrong \u003cxiaoguangrong@cn.fujitsu.com\u003e\nSigned-off-by: Marcelo Tosatti \u003cmtosatti@redhat.com\u003e\n" }, { "commit": "c9b263d2be9c535b410f6617710534f798bf0ff0", "tree": "1ae7a644cb583bf3de163c07220083caecb14eed", "parents": [ "2653503769ef9ae771509e1358a3da8de8d21709" ], "author": { "name": "Xiao Guangrong", "email": "xiaoguangrong@cn.fujitsu.com", "time": "Mon Nov 01 16:58:43 2010 +0800" }, "committer": { "name": "Avi Kivity", "email": "avi@redhat.com", "time": "Wed Jan 12 11:28:56 2011 +0200" }, "message": "KVM: fix tracing kvm_try_async_get_page\n\nTracing \u0027async\u0027 and *pfn is useless, since \u0027async\u0027 is always true,\nand \u0027*pfn\u0027 is always \"fault_pfn\u0027\n\nWe can trace \u0027gva\u0027 and \u0027gfn\u0027 instead, it can help us to see the\nlife-cycle of an async_pf\n\nSigned-off-by: Xiao Guangrong \u003cxiaoguangrong@cn.fujitsu.com\u003e\nSigned-off-by: Marcelo Tosatti \u003cmtosatti@redhat.com\u003e\n" }, { "commit": "64be5007066173d11a4635eedd57d41a3b3a7027", "tree": "d2d7e085b63a1f2160b04d1b6fcd5994592e5c80", "parents": [ "612819c3c6e67bac8fceaa7cc402f13b1b63f7e4" ], "author": { "name": "Gleb Natapov", "email": "gleb@redhat.com", "time": "Sun Oct 24 16:49:08 2010 +0200" }, "committer": { "name": "Avi Kivity", "email": "avi@redhat.com", "time": "Wed Jan 12 11:28:44 2011 +0200" }, "message": "KVM: x86: trace \"exit to userspace\" event\n\nAdd tracepoint for userspace exit.\n\nSigned-off-by: Gleb Natapov \u003cgleb@redhat.com\u003e\nSigned-off-by: Marcelo Tosatti \u003cmtosatti@redhat.com\u003e\n" }, { "commit": "7c90705bf2a373aa238661bdb6446f27299ef489", "tree": "d3d00b4413b0d33254d53bbb3285be82444494d9", "parents": [ "631bc4878220932fe67fc46fc7cf7cccdb1ec597" ], "author": { "name": "Gleb Natapov", "email": "gleb@redhat.com", "time": "Thu Oct 14 11:22:53 2010 +0200" }, "committer": { "name": "Avi Kivity", "email": "avi@redhat.com", "time": "Wed Jan 12 11:23:17 2011 +0200" }, "message": "KVM: Inject asynchronous page fault into a PV guest if page is swapped out.\n\nSend async page fault to a PV guest if it accesses swapped out memory.\nGuest will choose another task to run upon receiving the fault.\n\nAllow async page fault injection only when guest is in user mode since\notherwise guest may be in non-sleepable context and will not be able\nto reschedule.\n\nVcpu will be halted if guest will fault on the same page again or if\nvcpu executes kernel code.\n\nAcked-by: Rik van Riel \u003criel@redhat.com\u003e\nSigned-off-by: Gleb Natapov \u003cgleb@redhat.com\u003e\nSigned-off-by: Marcelo Tosatti \u003cmtosatti@redhat.com\u003e\n" }, { "commit": "af585b921e5d1e919947c4b1164b59507fe7cd7b", "tree": "d0d4cc753d4d58934c5986733d7340fe69e523de", "parents": [ "010c520e20413dfd567d568aba2b7238acd37e33" ], "author": { "name": "Gleb Natapov", "email": "gleb@redhat.com", "time": "Thu Oct 14 11:22:46 2010 +0200" }, "committer": { "name": "Avi Kivity", "email": "avi@redhat.com", "time": "Wed Jan 12 11:21:39 2011 +0200" }, "message": "KVM: Halt vcpu if page it tries to access is swapped out\n\nIf a guest accesses swapped out memory do not swap it in from vcpu thread\ncontext. Schedule work to do swapping and put vcpu into halted state\ninstead.\n\nInterrupts will still be delivered to the guest and if interrupt will\ncause reschedule guest will continue to run another task.\n\n[avi: remove call to get_user_pages_noio(), nacked by Linus; this\n makes everything synchrnous again]\n\nAcked-by: Rik van Riel \u003criel@redhat.com\u003e\nSigned-off-by: Gleb Natapov \u003cgleb@redhat.com\u003e\nSigned-off-by: Marcelo Tosatti \u003cmtosatti@redhat.com\u003e\n" }, { "commit": "881fe4bdcdc899674524e30a76c76d298b447008", "tree": "ce463d1c92168af7f127bb706b4a868ef8ca3ad2", "parents": [ "ec6e7c3ae39cb1dc279b5274aaaadd09ff8e224b" ], "author": { "name": "Mathieu Desnoyers", "email": "mathieu.desnoyers@efficios.com", "time": "Thu Jan 06 12:53:19 2011 -0500" }, "committer": { "name": "Steven Rostedt", "email": "rostedt@goodmis.org", "time": "Fri Jan 07 20:55:42 2011 -0500" }, "message": "tracing: remove duplicate null-pointer check in skb tracepoint\n\nThe check for NULL skb in the kfree_skb trace event is a duplicate from the\ncheck already done in its only caller, kfree_skb(). Remove this duplicate check.\n\nSigned-off-by: Mathieu Desnoyers \u003cmathieu.desnoyers@efficios.com\u003e\nLKML-Reference: \u003c20110106175319.GA30610@Krystal\u003e\nAcked-by: Neil Horman \u003cnhorman@tuxdriver.com\u003e\nAcked-by: David S. Miller \u003cdavem@davemloft.net\u003e\nCC: Steven Rostedt \u003crostedt@goodmis.org\u003e\nCC: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\nCC: Ingo Molnar \u003cmingo@elte.hu\u003e\nCC: Thomas Gleixner \u003ctglx@linutronix.de\u003e\nCC: Zhaolei \u003czhaolei@cn.fujitsu.com\u003e\nSigned-off-by: Steven Rostedt \u003crostedt@goodmis.org\u003e\n" }, { "commit": "3a9f987b3141f086de27832514aad9f50a53f754", "tree": "bac7e0819f738261f26d1f9dc584ad7312337c8c", "parents": [ "cb600d2f83c854ec3d6660063e4466431999489b" ], "author": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Fri Jan 07 15:40:10 2011 -0500" }, "committer": { "name": "Steven Rostedt", "email": "rostedt@goodmis.org", "time": "Fri Jan 07 15:44:56 2011 -0500" }, "message": "tracing: Include module.h in define_trace.h\n\nWhile doing some developing, Peter Zijlstra and I have found\nthat if a CREATE_TRACE_POINTS include is done before module.h\nis included, it can break the build.\n\nWe have been lucky so far that this has not broke the build\nsince module.h is included in almost everything.\n\nReported-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nSigned-off-by: Steven Rostedt \u003crostedt@goodmis.org\u003e\n" }, { "commit": "b7908c1035af7652cd613991b54dbff9c8b6bd3a", "tree": "91dc24bbb1299ba7f84e22bbaffd28950dd04713", "parents": [ "6c23a9681c0fe7fb7dd331b39dda11926f43746e" ], "author": { "name": "Jeff Moyer", "email": "jmoyer@redhat.com", "time": "Thu Jan 06 20:41:42 2011 +0100" }, "committer": { "name": "Jens Axboe", "email": "jaxboe@fusionio.com", "time": "Fri Jan 07 08:43:55 2011 +0100" }, "message": "block: trace event block fix unassigned field\n\nThe \"error\" field in block_bio_complete is not assigned, leaving the memory area\nuninitialized (keeping garbage data). Pass an additional tracepoint argument to\nthis event to initialize this field.\n\nSigned-off-by: Jeff Moyer \u003cjmoyer@redhat.com\u003e\nSigned-off-by: Mathieu Desnoyers \u003cmathieu.desnoyers@efficios.com\u003e\nCC: Steven Rostedt \u003crostedt@goodmis.org\u003e\nCC: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\nCC: Ingo Molnar \u003cmingo@elte.hu\u003e\nCC: Thomas Gleixner \u003ctglx@linutronix.de\u003e\nCC: Li Zefan \u003clizf@cn.fujitsu.com\u003e\nCC: Alan.Brunelle@hp.com\nSigned-off-by: Jens Axboe \u003cjaxboe@fusionio.com\u003e\n" }, { "commit": "25e41933b58777f2d020c3b0186b430ea004ec28", "tree": "a4ea8bb52509139b52c35d540928c12b33098f40", "parents": [ "61a0d49c33c7fd57c14895e5b0760bd02b65ac1f" ], "author": { "name": "Thomas Renninger", "email": "trenn@suse.de", "time": "Mon Jan 03 17:50:44 2011 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Tue Jan 04 08:16:54 2011 +0100" }, "message": "perf: Clean up power events by introducing new, more generic ones\n\nAdd these new power trace events:\n\n power:cpu_idle\n power:cpu_frequency\n power:machine_suspend\n\nThe old C-state/idle accounting events:\n power:power_start\n power:power_end\n\nHave now a replacement (but we are still keeping the old\ntracepoints for compatibility):\n\n power:cpu_idle\n\nand\n power:power_frequency\n\nis replaced with:\n power:cpu_frequency\n\npower:machine_suspend is newly introduced.\n\nJean Pihet has a patch integrated into the generic layer\n(kernel/power/suspend.c) which will make use of it.\n\nthe type\u003d field got removed from both, it was never\nused and the type is differed by the event type itself.\n\nperf timechart userspace tool gets adjusted in a separate patch.\n\nSigned-off-by: Thomas Renninger \u003ctrenn@suse.de\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nAcked-by: Arjan van de Ven \u003carjan@linux.intel.com\u003e\nAcked-by: Jean Pihet \u003cjean.pihet@newoldbits.com\u003e\nCc: Arnaldo Carvalho de Melo \u003cacme@redhat.com\u003e\nCc: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nCc: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\nCc: rjw@sisk.pl\nLKML-Reference: \u003c1294073445-14812-3-git-send-email-trenn@suse.de\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nLKML-Reference: \u003c1290072314-31155-2-git-send-email-trenn@suse.de\u003e\n" }, { "commit": "3028eb8c51d968b9e7b44a9786a4e521e37afb13", "tree": "a55b75b799209c2d850082eedcc3395e3b82b8de", "parents": [ "1badabd980da3bc09933c14970017067940ecd57" ], "author": { "name": "Mark Brown", "email": "broonie@opensource.wolfsonmicro.com", "time": "Sun Dec 05 12:22:46 2010 +0000" }, "committer": { "name": "Mark Brown", "email": "broonie@opensource.wolfsonmicro.com", "time": "Mon Dec 06 14:13:42 2010 +0000" }, "message": "ASoC: Add trace events for jack detection\n\nAs jack detection can trigger DAPM and the latency in debouncing can create\nconfusing windows in operation provide some trace events which will hopefully\nhelp in diagnostics. The soc-jack core traces all reports that it gets and\nthe resulting notifications to upper layers. An event for jack IRQs is also\nprovided for instrumentation of debounce, and used in the GPIO jack code.\n\nSigned-off-by: Mark Brown \u003cbroonie@opensource.wolfsonmicro.com\u003e\nAcked-by: Liam Girdwood \u003clrg@slimlogic.co.uk\u003e\n" }, { "commit": "287050d390264402e11bea8b811859e42e8faa29", "tree": "b24814f1c985545f68ea9de87f7819b9230db0aa", "parents": [ "042957801626465492b9428860de39a3cb2a8219" ], "author": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Thu Dec 02 16:46:18 2010 -0500" }, "committer": { "name": "Steven Rostedt", "email": "rostedt@goodmis.org", "time": "Fri Dec 03 10:45:34 2010 -0500" }, "message": "tracing: Add TRACE_EVENT_CONDITIONAL()\n\nThere are instances in the kernel that we only want to trace\na tracepoint when a certain condition is set. But we do not\nwant to test for that condition in the core kernel.\nIf we test for that condition before calling the tracepoin, then\nwe will be performing that test even when tracing is not enabled.\nThis is 99.99% of the time.\n\nWe currently can just filter out on that condition, but that happens\nafter we write to the trace buffer. We just wasted time writing to\nthe ring buffer for an event we never cared about.\n\nThis patch adds:\n\n TRACE_EVENT_CONDITION() and DEFINE_EVENT_CONDITION()\n\nThese have a new TP_CONDITION() argument that comes right after\nthe TP_ARGS(). This condition can use the parameters of TP_ARGS()\nin the TRACE_EVENT() to determine if the tracepoint should be traced\nor not. The TP_CONDITION() will be placed in a if (cond) trace;\n\nFor example, for the tracepoint sched_wakeup, it is useless to\ntrace a wakeup event where the caller never actually wakes\nanything up (where success \u003d\u003d 0). So adding:\n\n\tTP_CONDITION(success),\n\nwhich uses the \"success\" parameter of the wakeup tracepoint\nwill have it only trace when we have successfully woken up a\ntask.\n\nAcked-by: Mathieu Desnoyers \u003cmathieu.desnoyers@efficios.com\u003e\nAcked-by: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\nCc: Arjan van de Ven \u003carjan@infradead.org\u003e\nCc: Thomas Gleixner \u003ctglx@linutronix.de\u003e\nSigned-off-by: Steven Rostedt \u003crostedt@goodmis.org\u003e\n" }, { "commit": "042957801626465492b9428860de39a3cb2a8219", "tree": "b0997862babd5e474c500b1b4c522f3a03842106", "parents": [ "45677454dd6d128608117abe7dcd2bdfdd7cdf72" ], "author": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Fri Nov 12 22:32:11 2010 -0500" }, "committer": { "name": "Steven Rostedt", "email": "rostedt@goodmis.org", "time": "Fri Nov 19 10:18:47 2010 -0500" }, "message": "tracing/events: Show real number in array fields\n\nCurrently we have in something like the sched_switch event:\n\n field:char prev_comm[TASK_COMM_LEN];\toffset:12;\tsize:16;\tsigned:1;\n\nWhen a userspace tool such as perf tries to parse this, the\nTASK_COMM_LEN is meaningless. This is done because the TRACE_EVENT() macro\nsimply uses a #len to show the string of the length. When the length is\nan enum, we get a string that means nothing for tools.\n\nBy adding a static buffer and a mutex to protect it, we can store the\nstring into that buffer with snprintf and show the actual number.\nNow we get:\n\n field:char prev_comm[16]; offset:12; size:16; signed:1;\n\nSomething much more useful.\n\nSigned-off-by: Steven Rostedt \u003crostedt@goodmis.org\u003e\n" }, { "commit": "9e18e1869f5ebac69f0d881fe97a198ebc0834db", "tree": "18c5b5c185d39cbb50fa652b5e08d047c8cf06e1", "parents": [ "04af964f9cb666caa7c1436d003f8fac0f1fedcc", "460ed699f4c943e1ec4a8458869eb532fe31fd16" ], "author": { "name": "Mark Brown", "email": "broonie@opensource.wolfsonmicro.com", "time": "Fri Nov 19 11:49:35 2010 +0000" }, "committer": { "name": "Mark Brown", "email": "broonie@opensource.wolfsonmicro.com", "time": "Fri Nov 19 11:49:35 2010 +0000" }, "message": "Merge branch \u0027next-samsung-asoc\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung into for-2.6.38\n" }, { "commit": "ae51ce9061b1ddc0fde363913c932bee5b9bc5fd", "tree": "40fd3d633714d2a53fdbd2bdd172fb61232d999a", "parents": [ "072b198a4ad48bd722ec6d203d65422a4698eae7", "423478cde453eebdfcfebf4b8d378d8f5d49b853" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Thu Nov 18 20:07:12 2010 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Thu Nov 18 20:07:12 2010 +0100" }, "message": "Merge branch \u0027perf/core\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/frederic/random-tracing into perf/core\n" }, { "commit": "53cf810b1934f08a68e131aeeb16267a778f43df", "tree": "9407f9897084bb9669668c74f4f2c904f5e8877f", "parents": [ "fe5542030dce3b951f9eaf3ecb9a7bc5fa7bfed1" ], "author": { "name": "Frederic Weisbecker", "email": "fweisbec@gmail.com", "time": "Thu Nov 18 02:11:42 2010 +0100" }, "committer": { "name": "Frederic Weisbecker", "email": "fweisbec@gmail.com", "time": "Thu Nov 18 14:37:44 2010 +0100" }, "message": "tracing: Allow syscall trace events for non privileged users\n\nAs for the raw syscalls events, individual syscall events won\u0027t\nleak system wide information on task bound tracing. Allow non\nprivileged users to use them in such workflow.\n\nSigned-off-by: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\nCc: Ingo Molnar \u003cmingo@elte.hu\u003e\nCc: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nCc: Arnaldo Carvalho de Melo \u003cacme@redhat.com\u003e\nCc: Thomas Gleixner \u003ctglx@linutronix.de\u003e\nCc: Steven Rostedt \u003crostedt@goodmis.org\u003e\nCc: Li Zefan \u003clizf@cn.fujitsu.com\u003e\nCc: Jason Baron \u003cjbaron@redhat.com\u003e\n" }, { "commit": "fe5542030dce3b951f9eaf3ecb9a7bc5fa7bfed1", "tree": "4df9555f6259425ffa0689c12a572ff9acbd87f8", "parents": [ "1ed0c5971159974185653170543a764cc061c857" ], "author": { "name": "Frederic Weisbecker", "email": "fweisbec@gmail.com", "time": "Thu Nov 18 01:52:06 2010 +0100" }, "committer": { "name": "Frederic Weisbecker", "email": "fweisbec@gmail.com", "time": "Thu Nov 18 14:37:43 2010 +0100" }, "message": "tracing: Allow raw syscall trace events for non privileged users\n\nThis allows non privileged users to use the raw syscall trace events\nfor task bound tracing in perf.\n\nIt is safe because raw syscall trace events don\u0027t leak system wide\ninformations.\n\nSigned-off-by: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\nCc: Ingo Molnar \u003cmingo@elte.hu\u003e\nCc: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nCc: Arnaldo Carvalho de Melo \u003cacme@redhat.com\u003e\nCc: Thomas Gleixner \u003ctglx@linutronix.de\u003e\nCc: Steven Rostedt \u003crostedt@goodmis.org\u003e\nCc: Li Zefan \u003clizf@cn.fujitsu.com\u003e\nCc: Jason Baron \u003cjbaron@redhat.com\u003e\n" }, { "commit": "1ed0c5971159974185653170543a764cc061c857", "tree": "5887072ddc1c87776886c9a1b6ef61836f1ae925", "parents": [ "61c32659b12c44e62de32fbf99f7e4ca783dc38b" ], "author": { "name": "Frederic Weisbecker", "email": "fweisbec@gmail.com", "time": "Thu Nov 18 01:46:57 2010 +0100" }, "committer": { "name": "Frederic Weisbecker", "email": "fweisbec@gmail.com", "time": "Thu Nov 18 14:37:42 2010 +0100" }, "message": "tracing: New macro to set up initial event flags value\n\nThis introduces the new TRACE_EVENT_FLAGS() macro in order\nto set up initial event flags value.\n\nThis macro must simply follow the definition of a trace event\nand take the event name and the flag value as parameters:\n\nTRACE_EVENT(my_event, .....\n....\n);\n\nTRACE_EVENT_FLAGS(my_event, 1)\n\nThis will set up 1 as the initial my_event-\u003eflags value.\n\nSigned-off-by: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\nCc: Ingo Molnar \u003cmingo@elte.hu\u003e\nCc: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nCc: Arnaldo Carvalho de Melo \u003cacme@redhat.com\u003e\nCc: Thomas Gleixner \u003ctglx@linutronix.de\u003e\nCc: Steven Rostedt \u003crostedt@goodmis.org\u003e\nCc: Li Zefan \u003clizf@cn.fujitsu.com\u003e\nCc: Jason Baron \u003cjbaron@redhat.com\u003e\n" }, { "commit": "d07335e51df0c6dec202d315fc4f1f7e100eec4e", "tree": "db6ac1db8d87738b9e44497e082d490c14413f5d", "parents": [ "5fbf85639287b6ea287f4f5e5e7e36608f0f60bd" ], "author": { "name": "Mike Snitzer", "email": "snitzer@redhat.com", "time": "Tue Nov 16 12:52:38 2010 +0100" }, "committer": { "name": "Jens Axboe", "email": "jaxboe@fusionio.com", "time": "Tue Nov 16 12:53:39 2010 +0100" }, "message": "block: Rename \"block_remap\" tracepoint to \"block_bio_remap\" to clarify the event.\n\nSigned-off-by: Kiyoshi Ueda \u003ck-ueda@ct.jp.nec.com\u003e\nSigned-off-by: Jun\u0027ichi Nomura \u003cj-nomura@ce.jp.nec.com\u003e\nSigned-off-by: Mike Snitzer \u003csnitzer@redhat.com\u003e\nSigned-off-by: Jens Axboe \u003cjaxboe@fusionio.com\u003e\n" }, { "commit": "84e909303dbd3c8d882f152c17d1319f2873e147", "tree": "6ee9db7f42423282bbe9b17233eff20b8cddacbc", "parents": [ "a8b1d34f3ee1bc139ac5fbe3f84f6d16c90136bb" ], "author": { "name": "Mark Brown", "email": "broonie@opensource.wolfsonmicro.com", "time": "Thu Nov 04 00:07:02 2010 -0400" }, "committer": { "name": "Mark Brown", "email": "broonie@opensource.wolfsonmicro.com", "time": "Thu Nov 11 14:54:31 2010 +0000" }, "message": "ASoC: Add DAPM trace events\n\nTrace events for DAPM allow us to monitor the performance and behaviour\nof DAPM with logging which can be built into the kernel permanantly, is\nmore suited to automated analysis and display and less likely to suffer\ninterference from other logging activity.\n\nCurrently trace events are generated for:\n\n- Start and stop of DAPM processing\n- Start and stop of bias level changes\n- Power decisions for widgets\n- Widget event execution start and stop\n\ngiving some view as to what is happening and where latencies occur.\n\nActual changes in widget power can be seen via the register write trace in\nsoc-core.\n\nSigned-off-by: Mark Brown \u003cbroonie@opensource.wolfsonmicro.com\u003e\nAcked-by: Liam Girdwood \u003clrg@slimlogic.co.uk\u003e\n" }, { "commit": "a8b1d34f3ee1bc139ac5fbe3f84f6d16c90136bb", "tree": "d4efe677408e0ad8c1f32641650446205581513a", "parents": [ "68f89ad8c233a88b10404c5fd8a1109d12999962" ], "author": { "name": "Mark Brown", "email": "broonie@opensource.wolfsonmicro.com", "time": "Wed Nov 03 18:05:58 2010 -0400" }, "committer": { "name": "Mark Brown", "email": "broonie@opensource.wolfsonmicro.com", "time": "Thu Nov 11 14:54:26 2010 +0000" }, "message": "ASoC: Add trace events for ASoC register read/write\n\nThe trace subsystem provides a convenient way of instrumenting the kernel\nwhich can be left on all the time with extremely low impact on the system\nunlike prints to the kernel log which can be very spammy. Begin adding\nsupport for instrumenting ASoC via this interface by adding trace for the\nregister access primitives.\n\nSigned-off-by: Mark Brown \u003cbroonie@opensource.wolfsonmicro.com\u003e\nAcked-by: Liam Girdwood \u003clrg@slimlogic.co.uk\u003e\n" }, { "commit": "7ff9c073dd4d7200399076554f7ab9b876f196f6", "tree": "6ca4eb4ca9b2f6f7b11e8197bd8a9417d7307b00", "parents": [ "b56ff9d397cecdaad6c98c9d57cc6fea475e1f50" ], "author": { "name": "Theodore Ts\u0027o", "email": "tytso@mit.edu", "time": "Mon Nov 08 13:51:33 2010 -0500" }, "committer": { "name": "Theodore Ts\u0027o", "email": "tytso@mit.edu", "time": "Mon Nov 08 13:51:33 2010 -0500" }, "message": "ext4: Add new ext4 inode tracepoints\n\nAdd ext4_evict_inode, ext4_drop_inode, ext4_mark_inode_dirty, and\next4_begin_ordered_truncate()\n\nSigned-off-by: \"Theodore Ts\u0027o\" \u003ctytso@mit.edu\u003e\n" }, { "commit": "a107e5a3a473a2ea62bd5af24e11b84adf1486ff", "tree": "d36c2cb38d8be88d4d75cdebc354aa140aa0e470", "parents": [ "e3e1288e86a07cdeb0aee5860a2dff111c6eff79", "a269029d0e2192046be4c07ed78a45022469ee4c" ], "author": { "name": "Theodore Ts\u0027o", "email": "tytso@mit.edu", "time": "Wed Oct 27 23:44:47 2010 -0400" }, "committer": { "name": "Theodore Ts\u0027o", "email": "tytso@mit.edu", "time": "Wed Oct 27 23:44:47 2010 -0400" }, "message": "Merge branch \u0027next\u0027 into upstream-merge\n\nConflicts:\n\tfs/ext4/inode.c\n\tfs/ext4/mballoc.c\n\tinclude/trace/events/ext4.h\n" }, { "commit": "a269029d0e2192046be4c07ed78a45022469ee4c", "tree": "6ec7b7d2686a344ac77d10c4930fc3699461d198", "parents": [ "3d287de3b828226e5a450c7fd5bf4283792dc2b0" ], "author": { "name": "Theodore Ts\u0027o", "email": "tytso@mit.edu", "time": "Wed Oct 27 22:08:50 2010 -0400" }, "committer": { "name": "Theodore Ts\u0027o", "email": "tytso@mit.edu", "time": "Wed Oct 27 22:08:50 2010 -0400" }, "message": "ext4,jbd2: convert tracepoints to use major/minor numbers\n\nUnfortunately perf can\u0027t deal with anything other than direct structure\naccesses in the TP_printk() section. It will drop dead when it sees\njbd2_dev_to_name() in the \"print fmt\" section of the tracepoint.\n\nAddresses-Google-Bug: 3138508\n\nSigned-off-by: \"Theodore Ts\u0027o\" \u003ctytso@mit.edu\u003e\n" }, { "commit": "a042e26137d7674ac04b1cd2d5c06b9ebc1ee2d5", "tree": "c1a7a8bda41b99caa4b4a0fe320fc73278879f7d", "parents": [ "f66dd539feb849a3a00f7fac67c026e0935e373a", "e25804a0327dad954f7d43803178fdef2fd35b4e" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Wed Oct 27 18:48:00 2010 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Wed Oct 27 18:48:00 2010 -0700" }, "message": "Merge branch \u0027perf-fixes-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip\n\n* \u0027perf-fixes-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (50 commits)\n perf python scripting: Add futex-contention script\n perf python scripting: Fixup cut\u0027n\u0027paste error in sctop script\n perf scripting: Shut up \u0027perf record\u0027 final status\n perf record: Remove newline character from perror() argument\n perf python scripting: Support fedora 11 (audit 1.7.17)\n perf python scripting: Improve the syscalls-by-pid script\n perf python scripting: print the syscall name on sctop\n perf python scripting: Improve the syscalls-counts script\n perf python scripting: Improve the failed-syscalls-by-pid script\n kprobes: Remove redundant text_mutex lock in optimize\n x86/oprofile: Fix uninitialized variable use in debug printk\n tracing: Fix \u0027faild\u0027 -\u003e \u0027failed\u0027 typo\n perf probe: Fix format specified for Dwarf_Off parameter\n perf trace: Fix detection of script extension\n perf trace: Use $PERF_EXEC_PATH in canned report scripts\n perf tools: Document event modifiers\n perf tools: Remove direct slang.h include\n perf_events: Fix for transaction recovery in group_sched_in()\n perf_events: Revert: Fix transaction recovery in group_sched_in()\n perf, x86: Use NUMA aware allocations for PEBS/BTS/DS allocations\n ...\n" }, { "commit": "3e1e5f501632460184a98237d5460c521510535e", "tree": "9bb5006c9bcb1651f9c447869f4e90deb116e6e8", "parents": [ "4d5476164a052e80d4ef430e368e76dbde96801f" ], "author": { "name": "Eric Sandeen", "email": "sandeen@redhat.com", "time": "Wed Oct 27 21:30:07 2010 -0400" }, "committer": { "name": "Theodore Ts\u0027o", "email": "tytso@mit.edu", "time": "Wed Oct 27 21:30:07 2010 -0400" }, "message": "ext4: don\u0027t use ext4_allocation_contexts for tracing\n\nMany tracepoints were populating an ext4_allocation_context\nto pass in, but this requires a slab allocation even when\ntracepoints are off. In fact, 4 of 5 of these allocations\nwere only for tracing. In addition, we were only using a\nsmall fraction of the 144 bytes of this structure for this\npurpose.\n\nWe can do away with all these alloc/frees of the ac and\nsimply pass in the bits we care about, instead.\n\nI tested this by turning on tracing and running through\nxfstests on x86_64. I did not actually do anything with\nthe trace output, however.\n\nSigned-off-by: Eric Sandeen \u003csandeen@redhat.com\u003e\nSigned-off-by: \"Theodore Ts\u0027o\" \u003ctytso@mit.edu\u003e\n" }, { "commit": "4d5476164a052e80d4ef430e368e76dbde96801f", "tree": "c4949f899392c99896e3e81250c5f667a5ae0ba3", "parents": [ "0c9169ccad4aed233fdd49e95da4eada2536a06d" ], "author": { "name": "Eric Sandeen", "email": "sandeen@redhat.com", "time": "Wed Oct 27 21:30:07 2010 -0400" }, "committer": { "name": "Theodore Ts\u0027o", "email": "tytso@mit.edu", "time": "Wed Oct 27 21:30:07 2010 -0400" }, "message": "ext4: fix oops in trace_ext4_mb_release_group_pa\n\nOur QA reported an oops in the ext4_mb_release_group_pa tracing,\nand Josef Bacik pointed out that it was because we may have a\nnon-null but uninitialized ac_inode in the allocation context.\n\nI can reproduce it when running xfstests with ext4 tracepoints on, \non a CONFIG_SLAB_DEBUG kernel.\n\nWe call trace_ext4_mb_release_group_pa from 2 places, \next4_mb_discard_group_preallocations and \next4_mb_discard_lg_preallocations\n\nIn both cases we allocate an ac as a container just for tracing (!)\nand never fill in the ac_inode. There\u0027s no reason to be assigning,\ntesting, or printing it as far as I can see, so just remove it from\nthe tracepoint.\n\nSigned-off-by: Eric Sandeen \u003csandeen@redhat.com\u003e\nReviewed-by: Josef Bacik \u003cjosef@redhat.com\u003e\nSigned-off-by: \"Theodore Ts\u0027o\" \u003ctytso@mit.edu\u003e\n" }, { "commit": "b853fd364810a241050778124842a8c415c72a69", "tree": "5fbc9f7ed51db48f9ef68343f69fa5b5b537a901", "parents": [ "39e3ac2599a5f9aba499b5f8af809108e70a6163" ], "author": { "name": "Wen Congyang", "email": "wency@cn.fujitsu.com", "time": "Wed Oct 27 21:27:12 2010 -0400" }, "committer": { "name": "Theodore Ts\u0027o", "email": "tytso@mit.edu", "time": "Wed Oct 27 21:27:12 2010 -0400" }, "message": "ext4: avoid null dereference in trace_ext4_mballoc_discard\n\nac-\u003einode is set to null in function ext4_mb_release_group_pa(),\nand then trace_ext4_mballoc_discard(ac) is called, the kernel\nwill panic.\n\nBUG: unable to handle kernel NULL pointer dereference at 000000a4\nIP: [\u003cf87e1714\u003e] ftrace_raw_event_ext4__mballoc+0x54/0xc0 [ext4]\n*pdpt \u003d 0000000000abd001 *pde \u003d 0000000000000000\nOops: 0000 [#1] SMP\n\nPid: 550, comm: flush-8:16 Not tainted 2.6.36-rc1 #1 SE7320EP2/Altos G530\nEIP: 0060:[\u003cf87e1714\u003e] EFLAGS: 00010206 CPU: 1\nEIP is at ftrace_raw_event_ext4__mballoc+0x54/0xc0 [ext4]\nEAX: f32ac840 EBX: f3f1cf88 ECX: f32ac840 EDX: 00000000\nESI: f32ac83c EDI: f880b9d8 EBP: 00000000 ESP: f4b77ae4\n DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068\nProcess flush-8:16 (pid: 550, ti\u003df4b76000 task\u003df613e540 task.ti\u003df4b76000)\nCall Trace:\n [\u003cf87f5ac1\u003e] ? ext4_mb_release_group_pa+0x121/0x150 [ext4]\n [\u003cf87f8356\u003e] ? ext4_mb_discard_group_preallocations+0x336/0x400 [ext4]\n [\u003cf87fb7f1\u003e] ? ext4_mb_new_blocks+0x3d1/0x4f0 [ext4]\n [\u003cc05a6c5b\u003e] ? __make_request+0x10b/0x440\n [\u003cf87f1fb4\u003e] ? ext4_ext_map_blocks+0x1334/0x1980 [ext4]\n [\u003cc04ac78a\u003e] ? rb_reserve_next_event+0xaa/0x3b0\n [\u003cf87d18d6\u003e] ? ext4_map_blocks+0xd6/0x1d0 [ext4]\n [\u003cf87d2da7\u003e] ? mpage_da_map_blocks+0xc7/0x8a0 [ext4]\n [\u003cc04c8a68\u003e] ? find_get_pages_tag+0x38/0x110\n [\u003cc04d23a5\u003e] ? __pagevec_release+0x15/0x20\n [\u003cf87d3ca5\u003e] ? ext4_da_writepages+0x2b5/0x5d0 [ext4]\n [\u003cc04cfbe0\u003e] ? __writepage+0x0/0x30\n [\u003cc04d0e34\u003e] ? do_writepages+0x14/0x30\n [\u003cc0526600\u003e] ? writeback_single_inode+0xa0/0x240\n [\u003cc0526971\u003e] ? writeback_sb_inodes+0xc1/0x180\n [\u003cc0526ab8\u003e] ? writeback_inodes_wb+0x88/0x140\n [\u003cc0526d7b\u003e] ? wb_writeback+0x20b/0x320\n [\u003cc045aca7\u003e] ? lock_timer_base+0x27/0x50\n [\u003cc0526fe0\u003e] ? wb_do_writeback+0x150/0x190\n [\u003cc05270a8\u003e] ? bdi_writeback_thread+0x88/0x1f0\n [\u003cc043b680\u003e] ? complete+0x40/0x60\n [\u003cc0527020\u003e] ? bdi_writeback_thread+0x0/0x1f0\n [\u003cc0469474\u003e] ? kthread+0x74/0x80\n [\u003cc0469400\u003e] ? kthread+0x0/0x80\n [\u003cc040a23e\u003e] ? kernel_thread_helper+0x6/0x10\n\nSigned-off-by: Wen Congyang \u003cwency@cn.fujitsu.com\u003e\nAcked-by: Steven Rostedt \u003crostedt@goodmis.org\u003e\nSigned-off-by: \"Theodore Ts\u0027o\" \u003ctytso@mit.edu\u003e\n" }, { "commit": "0e093d99763eb4cea09f8ca4f1d01f34e121d10b", "tree": "fad38f9c3651c81db298521141a79d9468f71986", "parents": [ "08fc468f4eaf6683bae5bdb94743a09d8630cb80" ], "author": { "name": "Mel Gorman", "email": "mel@csn.ul.ie", "time": "Tue Oct 26 14:21:45 2010 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Oct 26 16:52:07 2010 -0700" }, "message": "writeback: do not sleep on the congestion queue if there are no congested BDIs or if significant congestion is not being encountered in the current zone\n\nIf congestion_wait() is called with no BDI congested, the caller will\nsleep for the full timeout and this may be an unnecessary sleep. This\npatch adds a wait_iff_congested() that checks congestion and only sleeps\nif a BDI is congested else, it calls cond_resched() to ensure the caller\nis not hogging the CPU longer than its quota but otherwise will not sleep.\n\nThis is aimed at reducing some of the major desktop stalls reported during\nIO. For example, while kswapd is operating, it calls congestion_wait()\nbut it could just have been reclaiming clean page cache pages with no\ncongestion. Without this patch, it would sleep for a full timeout but\nafter this patch, it\u0027ll just call schedule() if it has been on the CPU too\nlong. Similar logic applies to direct reclaimers that are not making\nenough progress.\n\nSigned-off-by: Mel Gorman \u003cmel@csn.ul.ie\u003e\nCc: Johannes Weiner \u003channes@cmpxchg.org\u003e\nCc: Minchan Kim \u003cminchan.kim@gmail.com\u003e\nCc: Wu Fengguang \u003cfengguang.wu@intel.com\u003e\nCc: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nCc: KOSAKI Motohiro \u003ckosaki.motohiro@jp.fujitsu.com\u003e\nCc: Rik van Riel \u003criel@redhat.com\u003e\nCc: Jens Axboe \u003caxboe@kernel.dk\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "7d3579e8e61937cbba268ea9b218d006b6d64221", "tree": "4fa1863641343eee551681d60a823a84a2611289", "parents": [ "bc57e00f5e0b2480ef222c775c49552d3a930db7" ], "author": { "name": "KOSAKI Motohiro", "email": "kosaki.motohiro@jp.fujitsu.com", "time": "Tue Oct 26 14:21:42 2010 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Oct 26 16:52:07 2010 -0700" }, "message": "vmscan: narrow the scenarios in whcih lumpy reclaim uses synchrounous reclaim\n\nshrink_page_list() can decide to give up reclaiming a page under a\nnumber of conditions such as\n\n 1. trylock_page() failure\n 2. page is unevictable\n 3. zone reclaim and page is mapped\n 4. PageWriteback() is true\n 5. page is swapbacked and swap is full\n 6. add_to_swap() failure\n 7. page is dirty and gfpmask don\u0027t have GFP_IO, GFP_FS\n 8. page is pinned\n 9. IO queue is congested\n 10. pageout() start IO, but not finished\n\nWith lumpy reclaim, failures result in entering synchronous lumpy reclaim\nbut this can be unnecessary. In cases (2), (3), (5), (6), (7) and (8),\nthere is no point retrying. This patch causes lumpy reclaim to abort when\nit is known it will fail.\n\nCase (9) is more interesting. current behavior is,\n 1. start shrink_page_list(async)\n 2. found queue_congested()\n 3. skip pageout write\n 4. still start shrink_page_list(sync)\n 5. wait on a lot of pages\n 6. again, found queue_congested()\n 7. give up pageout write again\n\nSo, it\u0027s useless time wasting. However, just skipping page reclaim is\nalso notgood as x86 allocating a huge page needs 512 pages for example.\nIt can have more dirty pages than queue congestion threshold (~\u003d128).\n\nAfter this patch, pageout() behaves as follows;\n\n - If order \u003e PAGE_ALLOC_COSTLY_ORDER\n\tIgnore queue congestion always.\n - If order \u003c\u003d PAGE_ALLOC_COSTLY_ORDER\n\tskip write page and disable lumpy reclaim.\n\nSigned-off-by: KOSAKI Motohiro \u003ckosaki.motohiro@jp.fujitsu.com\u003e\nSigned-off-by: Mel Gorman \u003cmel@csn.ul.ie\u003e\nReviewed-by: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nCc: Johannes Weiner \u003channes@cmpxchg.org\u003e\nCc: Minchan Kim \u003cminchan.kim@gmail.com\u003e\nCc: Wu Fengguang \u003cfengguang.wu@intel.com\u003e\nCc: Rik van Riel \u003criel@redhat.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "52bb9198668968506f9d12bf35d7f5d3f094921e", "tree": "6e1f79c46de902c4462054803eb13115673f8c8c", "parents": [ "e11da5b4fdf01d71d73c21cb92b00595b917d7fd" ], "author": { "name": "Mel Gorman", "email": "mel@csn.ul.ie", "time": "Tue Oct 26 14:21:41 2010 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Oct 26 16:52:07 2010 -0700" }, "message": "writeback: account for time spent congestion_waited\n\nThere is strong evidence to indicate a lot of time is being spent in\ncongestion_wait(), some of it unnecessarily. This patch adds a tracepoint\nfor congestion_wait to record when congestion_wait() was called, how long\nthe timeout was for and how long it actually slept.\n\nSigned-off-by: Mel Gorman \u003cmel@csn.ul.ie\u003e\nReviewed-by: Minchan Kim \u003cminchan.kim@gmail.com\u003e\nReviewed-by: Johannes Weiner \u003channes@cmpxchg.org\u003e\nCc: Wu Fengguang \u003cfengguang.wu@intel.com\u003e\nCc: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nCc: KOSAKI Motohiro \u003ckosaki.motohiro@jp.fujitsu.com\u003e\nCc: Rik van Riel \u003criel@redhat.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "e11da5b4fdf01d71d73c21cb92b00595b917d7fd", "tree": "30da286bac7533fba5c119396491ab05a92471fd", "parents": [ "66d9a986cddbbc2ea5db013e7999c621a956cc47" ], "author": { "name": "Mel Gorman", "email": "mel@csn.ul.ie", "time": "Tue Oct 26 14:21:40 2010 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Oct 26 16:52:07 2010 -0700" }, "message": "tracing, vmscan: add trace events for LRU list shrinking\n\nThere have been numerous reports of stalls that pointed at the problem\nbeing somewhere in the VM. There are multiple roots to the problems which\nmeans dealing with any of the root problems in isolation is tricky to\njustify on their own and they would still need integration testing. This\npatch series puts together two different patch sets which in combination\nshould tackle some of the root causes of latency problems being reported.\n\nPatch 1 adds a tracepoint for shrink_inactive_list. For this series, the\nmost important results is being able to calculate the scanning/reclaim\nratio as a measure of the amount of work being done by page reclaim.\n\nPatch 2 accounts for time spent in congestion_wait.\n\nPatches 3-6 were originally developed by Kosaki Motohiro but reworked for\nthis series. It has been noted that lumpy reclaim is far too aggressive\nand trashes the system somewhat. As SLUB uses high-order allocations, a\nlarge cost incurred by lumpy reclaim will be noticeable. It was also\nreported during transparent hugepage support testing that lumpy reclaim\nwas trashing the system and these patches should mitigate that problem\nwithout disabling lumpy reclaim.\n\nPatch 7 adds wait_iff_congested() and replaces some callers of\ncongestion_wait(). wait_iff_congested() only sleeps if there is a BDI\nthat is currently congested. Patch 8 notes that any BDI being congested\nis not necessarily a problem because there could be multiple BDIs of\nvarying speeds and numberous zones. It attempts to track when a zone\nbeing reclaimed contains many pages backed by a congested BDI and if so,\nreclaimers wait on the congestion queue.\n\nI ran a number of tests with monitoring on X86, X86-64 and PPC64. Each\nmachine had 3G of RAM and the CPUs were\n\nX86: Intel P4 2-core\nX86-64: AMD Phenom 4-core\nPPC64: PPC970MP\n\nEach used a single disk and the onboard IO controller. Dirty ratio was\nleft at 20. I\u0027m just going to report for X86-64 and PPC64 in a vague\nattempt to keep this report short. Four kernels were tested each based on\nv2.6.36-rc4\n\ntraceonly-v2r2: Patches 1 and 2 to instrument vmscan reclaims and congestion_wait\nlowlumpy-v2r3: Patches 1-6 to test if lumpy reclaim is better\nwaitcongest-v2r3: Patches 1-7 to only wait on congestion\nwaitwriteback-v2r4: Patches 1-8 to detect when a zone is congested\n\nnocongest-v1r5: Patches 1-3 for testing wait_iff_congestion\nnodirect-v1r5: Patches 1-10 to disable filesystem writeback for better IO\n\nThe tests run were as follows\n\nkernbench\n\tcompile-based benchmark. Smoke test performance\n\nsysbench\n\tOLTP read-only benchmark. Will be re-run in the future as read-write\n\nmicro-mapped-file-stream\n\tThis is a micro-benchmark from Johannes Weiner that accesses a\n\tlarge sparse-file through mmap(). It was configured to run in only\n\tsingle-CPU mode but can be indicative of how well page reclaim\n\tidentifies suitable pages.\n\nstress-highalloc\n\tTries to allocate huge pages under heavy load.\n\nkernbench, iozone and sysbench did not report any performance regression\non any machine. sysbench did pressure the system lightly and there was\nreclaim activity but there were no difference of major interest between\nthe kernels.\n\nX86-64 micro-mapped-file-stream\n\n traceonly-v2r2 lowlumpy-v2r3 waitcongest-v2r3 waitwriteback-v2r4\npgalloc_dma 1639.00 ( 0.00%) 667.00 (-145.73%) 1167.00 ( -40.45%) 578.00 (-183.56%)\npgalloc_dma32 2842410.00 ( 0.00%) 2842626.00 ( 0.01%) 2843043.00 ( 0.02%) 2843014.00 ( 0.02%)\npgalloc_normal 0.00 ( 0.00%) 0.00 ( 0.00%) 0.00 ( 0.00%) 0.00 ( 0.00%)\npgsteal_dma 729.00 ( 0.00%) 85.00 (-757.65%) 609.00 ( -19.70%) 125.00 (-483.20%)\npgsteal_dma32 2338721.00 ( 0.00%) 2447354.00 ( 4.44%) 2429536.00 ( 3.74%) 2436772.00 ( 4.02%)\npgsteal_normal 0.00 ( 0.00%) 0.00 ( 0.00%) 0.00 ( 0.00%) 0.00 ( 0.00%)\npgscan_kswapd_dma 1469.00 ( 0.00%) 532.00 (-176.13%) 1078.00 ( -36.27%) 220.00 (-567.73%)\npgscan_kswapd_dma32 4597713.00 ( 0.00%) 4503597.00 ( -2.09%) 4295673.00 ( -7.03%) 3891686.00 ( -18.14%)\npgscan_kswapd_normal 0.00 ( 0.00%) 0.00 ( 0.00%) 0.00 ( 0.00%) 0.00 ( 0.00%)\npgscan_direct_dma 71.00 ( 0.00%) 134.00 ( 47.01%) 243.00 ( 70.78%) 352.00 ( 79.83%)\npgscan_direct_dma32 305820.00 ( 0.00%) 280204.00 ( -9.14%) 600518.00 ( 49.07%) 957485.00 ( 68.06%)\npgscan_direct_normal 0.00 ( 0.00%) 0.00 ( 0.00%) 0.00 ( 0.00%) 0.00 ( 0.00%)\npageoutrun 16296.00 ( 0.00%) 21254.00 ( 23.33%) 18447.00 ( 11.66%) 20067.00 ( 18.79%)\nallocstall 443.00 ( 0.00%) 273.00 ( -62.27%) 513.00 ( 13.65%) 1568.00 ( 71.75%)\n\nThese are based on the raw figures taken from /proc/vmstat. It\u0027s a rough\nmeasure of reclaim activity. Note that allocstall counts are higher\nbecause we are entering direct reclaim more often as a result of not\nsleeping in congestion. In itself, it\u0027s not necessarily a bad thing.\nIt\u0027s easier to get a view of what happened from the vmscan tracepoint\nreport.\n\nFTrace Reclaim Statistics: vmscan\n\n traceonly-v2r2 lowlumpy-v2r3 waitcongest-v2r3 waitwriteback-v2r4\nDirect reclaims 443 273 513 1568\nDirect reclaim pages scanned 305968 280402 600825 957933\nDirect reclaim pages reclaimed 43503 19005 30327 117191\nDirect reclaim write file async I/O 0 0 0 0\nDirect reclaim write anon async I/O 0 3 4 12\nDirect reclaim write file sync I/O 0 0 0 0\nDirect reclaim write anon sync I/O 0 0 0 0\nWake kswapd requests 187649 132338 191695 267701\nKswapd wakeups 3 1 4 1\nKswapd pages scanned 4599269 4454162 4296815 3891906\nKswapd pages reclaimed 2295947 2428434 2399818 2319706\nKswapd reclaim write file async I/O 1 0 1 1\nKswapd reclaim write anon async I/O 59 187 41 222\nKswapd reclaim write file sync I/O 0 0 0 0\nKswapd reclaim write anon sync I/O 0 0 0 0\nTime stalled direct reclaim (seconds) 4.34 2.52 6.63 2.96\nTime kswapd awake (seconds) 11.15 10.25 11.01 10.19\n\nTotal pages scanned 4905237 4734564 4897640 4849839\nTotal pages reclaimed 2339450 2447439 2430145 2436897\n%age total pages scanned/reclaimed 47.69% 51.69% 49.62% 50.25%\n%age total pages scanned/written 0.00% 0.00% 0.00% 0.00%\n%age file pages scanned/written 0.00% 0.00% 0.00% 0.00%\nPercentage Time Spent Direct Reclaim 29.23% 19.02% 38.48% 20.25%\nPercentage Time kswapd Awake 78.58% 78.85% 76.83% 79.86%\n\nWhat is interesting here for nocongest in particular is that while direct\nreclaim scans more pages, the overall number of pages scanned remains the\nsame and the ratio of pages scanned to pages reclaimed is more or less the\nsame. In other words, while we are sleeping less, reclaim is not doing\nmore work and as direct reclaim and kswapd is awake for less time, it\nwould appear to be doing less work.\n\nFTrace Reclaim Statistics: congestion_wait\nDirect number congest waited 87 196 64 0\nDirect time congest waited 4604ms 4732ms 5420ms 0ms\nDirect full congest waited 72 145 53 0\nDirect number conditional waited 0 0 324 1315\nDirect time conditional waited 0ms 0ms 0ms 0ms\nDirect full conditional waited 0 0 0 0\nKSwapd number congest waited 20 10 15 7\nKSwapd time congest waited 1264ms 536ms 884ms 284ms\nKSwapd full congest waited 10 4 6 2\nKSwapd number conditional waited 0 0 0 0\nKSwapd time conditional waited 0ms 0ms 0ms 0ms\nKSwapd full conditional waited 0 0 0 0\n\nThe vanilla kernel spent 8 seconds asleep in direct reclaim and no time at\nall asleep with the patches.\n\nMMTests Statistics: duration\nUser/Sys Time Running Test (seconds) 10.51 10.73 10.6 11.66\nTotal Elapsed Time (seconds) 14.19 13.00 14.33 12.76\n\nOverall, the tests completed faster. It is interesting to note that backing off further\nwhen a zone is congested and not just a BDI was more efficient overall.\n\nPPC64 micro-mapped-file-stream\npgalloc_dma 3024660.00 ( 0.00%) 3027185.00 ( 0.08%) 3025845.00 ( 0.04%) 3026281.00 ( 0.05%)\npgalloc_normal 0.00 ( 0.00%) 0.00 ( 0.00%) 0.00 ( 0.00%) 0.00 ( 0.00%)\npgsteal_dma 2508073.00 ( 0.00%) 2565351.00 ( 2.23%) 2463577.00 ( -1.81%) 2532263.00 ( 0.96%)\npgsteal_normal 0.00 ( 0.00%) 0.00 ( 0.00%) 0.00 ( 0.00%) 0.00 ( 0.00%)\npgscan_kswapd_dma 4601307.00 ( 0.00%) 4128076.00 ( -11.46%) 3912317.00 ( -17.61%) 3377165.00 ( -36.25%)\npgscan_kswapd_normal 0.00 ( 0.00%) 0.00 ( 0.00%) 0.00 ( 0.00%) 0.00 ( 0.00%)\npgscan_direct_dma 629825.00 ( 0.00%) 971622.00 ( 35.18%) 1063938.00 ( 40.80%) 1711935.00 ( 63.21%)\npgscan_direct_normal 0.00 ( 0.00%) 0.00 ( 0.00%) 0.00 ( 0.00%) 0.00 ( 0.00%)\npageoutrun 27776.00 ( 0.00%) 20458.00 ( -35.77%) 18763.00 ( -48.04%) 18157.00 ( -52.98%)\nallocstall 977.00 ( 0.00%) 2751.00 ( 64.49%) 2098.00 ( 53.43%) 5136.00 ( 80.98%)\n\nSimilar trends to x86-64. allocstalls are up but it\u0027s not necessarily bad.\n\nFTrace Reclaim Statistics: vmscan\nDirect reclaims 977 2709 2098 5136\nDirect reclaim pages scanned 629825 963814 1063938 1711935\nDirect reclaim pages reclaimed 75550 242538 150904 387647\nDirect reclaim write file async I/O 0 0 0 2\nDirect reclaim write anon async I/O 0 10 0 4\nDirect reclaim write file sync I/O 0 0 0 0\nDirect reclaim write anon sync I/O 0 0 0 0\nWake kswapd requests 392119 1201712 571935 571921\nKswapd wakeups 3 2 3 3\nKswapd pages scanned 4601307 4128076 3912317 3377165\nKswapd pages reclaimed 2432523 2318797 2312673 2144616\nKswapd reclaim write file async I/O 20 1 1 1\nKswapd reclaim write anon async I/O 57 132 11 121\nKswapd reclaim write file sync I/O 0 0 0 0\nKswapd reclaim write anon sync I/O 0 0 0 0\nTime stalled direct reclaim (seconds) 6.19 7.30 13.04 10.88\nTime kswapd awake (seconds) 21.73 26.51 25.55 23.90\n\nTotal pages scanned 5231132 5091890 4976255 5089100\nTotal pages reclaimed 2508073 2561335 2463577 2532263\n%age total pages scanned/reclaimed 47.95% 50.30% 49.51% 49.76%\n%age total pages scanned/written 0.00% 0.00% 0.00% 0.00%\n%age file pages scanned/written 0.00% 0.00% 0.00% 0.00%\nPercentage Time Spent Direct Reclaim 18.89% 20.65% 32.65% 27.65%\nPercentage Time kswapd Awake 72.39% 80.68% 78.21% 77.40%\n\nAgain, a similar trend that the congestion_wait changes mean that direct\nreclaim scans more pages but the overall number of pages scanned while\nslightly reduced, are very similar. The ratio of scanning/reclaimed\nremains roughly similar. The downside is that kswapd and direct reclaim\nwas awake longer and for a larger percentage of the overall workload.\nIt\u0027s possible there were big differences in the amount of time spent\nreclaiming slab pages between the different kernels which is plausible\nconsidering that the micro tests runs after fsmark and sysbench.\n\nTrace Reclaim Statistics: congestion_wait\nDirect number congest waited 845 1312 104 0\nDirect time congest waited 19416ms 26560ms 7544ms 0ms\nDirect full congest waited 745 1105 72 0\nDirect number conditional waited 0 0 1322 2935\nDirect time conditional waited 0ms 0ms 12ms 312ms\nDirect full conditional waited 0 0 0 3\nKSwapd number congest waited 39 102 75 63\nKSwapd time congest waited 2484ms 6760ms 5756ms 3716ms\nKSwapd full congest waited 20 48 46 25\nKSwapd number conditional waited 0 0 0 0\nKSwapd time conditional waited 0ms 0ms 0ms 0ms\nKSwapd full conditional waited 0 0 0 0\n\nThe vanilla kernel spent 20 seconds asleep in direct reclaim and only\n312ms asleep with the patches. The time kswapd spent congest waited was\nalso reduced by a large factor.\n\nMMTests Statistics: duration\nser/Sys Time Running Test (seconds) 26.58 28.05 26.9 28.47\nTotal Elapsed Time (seconds) 30.02 32.86 32.67 30.88\n\nWith all patches applies, the completion times are very similar.\n\nX86-64 STRESS-HIGHALLOC\n traceonly-v2r2 lowlumpy-v2r3 waitcongest-v2r3waitwriteback-v2r4\nPass 1 82.00 ( 0.00%) 84.00 ( 2.00%) 85.00 ( 3.00%) 85.00 ( 3.00%)\nPass 2 90.00 ( 0.00%) 87.00 (-3.00%) 88.00 (-2.00%) 89.00 (-1.00%)\nAt Rest 92.00 ( 0.00%) 90.00 (-2.00%) 90.00 (-2.00%) 91.00 (-1.00%)\n\nSuccess figures across the board are broadly similar.\n\n traceonly-v2r2 lowlumpy-v2r3 waitcongest-v2r3waitwriteback-v2r4\nDirect reclaims 1045 944 886 887\nDirect reclaim pages scanned 135091 119604 109382 101019\nDirect reclaim pages reclaimed 88599 47535 47863 46671\nDirect reclaim write file async I/O 494 283 465 280\nDirect reclaim write anon async I/O 29357 13710 16656 13462\nDirect reclaim write file sync I/O 154 2 2 3\nDirect reclaim write anon sync I/O 14594 571 509 561\nWake kswapd requests 7491 933 872 892\nKswapd wakeups 814 778 731 780\nKswapd pages scanned 7290822 15341158 11916436 13703442\nKswapd pages reclaimed 3587336 3142496 3094392 3187151\nKswapd reclaim write file async I/O 91975 32317 28022 29628\nKswapd reclaim write anon async I/O 1992022 789307 829745 849769\nKswapd reclaim write file sync I/O 0 0 0 0\nKswapd reclaim write anon sync I/O 0 0 0 0\nTime stalled direct reclaim (seconds) 4588.93 2467.16 2495.41 2547.07\nTime kswapd awake (seconds) 2497.66 1020.16 1098.06 1176.82\n\nTotal pages scanned 7425913 15460762 12025818 13804461\nTotal pages reclaimed 3675935 3190031 3142255 3233822\n%age total pages scanned/reclaimed 49.50% 20.63% 26.13% 23.43%\n%age total pages scanned/written 28.66% 5.41% 7.28% 6.47%\n%age file pages scanned/written 1.25% 0.21% 0.24% 0.22%\nPercentage Time Spent Direct Reclaim 57.33% 42.15% 42.41% 42.99%\nPercentage Time kswapd Awake 43.56% 27.87% 29.76% 31.25%\n\nScanned/reclaimed ratios again look good with big improvements in\nefficiency. The Scanned/written ratios also look much improved. With a\nbetter scanned/written ration, there is an expectation that IO would be\nmore efficient and indeed, the time spent in direct reclaim is much\nreduced by the full series and kswapd spends a little less time awake.\n\nOverall, indications here are that allocations were happening much faster\nand this can be seen with a graph of the latency figures as the\nallocations were taking place\nhttp://www.csn.ul.ie/~mel/postings/vmscanreduce-20101509/highalloc-interlatency-hydra-mean.ps\n\nFTrace Reclaim Statistics: congestion_wait\nDirect number congest waited 1333 204 169 4\nDirect time congest waited 78896ms 8288ms 7260ms 200ms\nDirect full congest waited 756 92 69 2\nDirect number conditional waited 0 0 26 186\nDirect time conditional waited 0ms 0ms 0ms 2504ms\nDirect full conditional waited 0 0 0 25\nKSwapd number congest waited 4 395 227 282\nKSwapd time congest waited 384ms 25136ms 10508ms 18380ms\nKSwapd full congest waited 3 232 98 176\nKSwapd number conditional waited 0 0 0 0\nKSwapd time conditional waited 0ms 0ms 0ms 0ms\nKSwapd full conditional waited 0 0 0 0\nKSwapd full conditional waited 318 0 312 9\n\nOverall, the time spent speeping is reduced. kswapd is still hitting\ncongestion_wait() but that is because there are callers remaining where it\nwasn\u0027t clear in advance if they should be changed to wait_iff_congested()\nor not. Overall the sleep imes are reduced though - from 79ish seconds to\nabout 19.\n\nMMTests Statistics: duration\nUser/Sys Time Running Test (seconds) 3415.43 3386.65 3388.39 3377.5\nTotal Elapsed Time (seconds) 5733.48 3660.33 3689.41 3765.39\n\nWith the full series, the time to complete the tests are reduced by 30%\n\nPPC64 STRESS-HIGHALLOC\n traceonly-v2r2 lowlumpy-v2r3 waitcongest-v2r3waitwriteback-v2r4\nPass 1 17.00 ( 0.00%) 34.00 (17.00%) 38.00 (21.00%) 43.00 (26.00%)\nPass 2 25.00 ( 0.00%) 37.00 (12.00%) 42.00 (17.00%) 46.00 (21.00%)\nAt Rest 49.00 ( 0.00%) 43.00 (-6.00%) 45.00 (-4.00%) 51.00 ( 2.00%)\n\nSuccess rates there are *way* up particularly considering that the 16MB\nhuge pages on PPC64 mean that it\u0027s always much harder to allocate them.\n\nFTrace Reclaim Statistics: vmscan\n stress-highalloc stress-highalloc stress-highalloc stress-highalloc\n traceonly-v2r2 lowlumpy-v2r3 waitcongest-v2r3waitwriteback-v2r4\nDirect reclaims 499 505 564 509\nDirect reclaim pages scanned 223478 41898 51818 45605\nDirect reclaim pages reclaimed 137730 21148 27161 23455\nDirect reclaim write file async I/O 399 136 162 136\nDirect reclaim write anon async I/O 46977 2865 4686 3998\nDirect reclaim write file sync I/O 29 0 1 3\nDirect reclaim write anon sync I/O 31023 159 237 239\nWake kswapd requests 420 351 360 326\nKswapd wakeups 185 294 249 277\nKswapd pages scanned 15703488 16392500 17821724 17598737\nKswapd pages reclaimed 5808466 2908858 3139386 3145435\nKswapd reclaim write file async I/O 159938 18400 18717 13473\nKswapd reclaim write anon async I/O 3467554 228957 322799 234278\nKswapd reclaim write file sync I/O 0 0 0 0\nKswapd reclaim write anon sync I/O 0 0 0 0\nTime stalled direct reclaim (seconds) 9665.35 1707.81 2374.32 1871.23\nTime kswapd awake (seconds) 9401.21 1367.86 1951.75 1328.88\n\nTotal pages scanned 15926966 16434398 17873542 17644342\nTotal pages reclaimed 5946196 2930006 3166547 3168890\n%age total pages scanned/reclaimed 37.33% 17.83% 17.72% 17.96%\n%age total pages scanned/written 23.27% 1.52% 1.94% 1.43%\n%age file pages scanned/written 1.01% 0.11% 0.11% 0.08%\nPercentage Time Spent Direct Reclaim 44.55% 35.10% 41.42% 36.91%\nPercentage Time kswapd Awake 86.71% 43.58% 52.67% 41.14%\n\nWhile the scanning rates are slightly up, the scanned/reclaimed and\nscanned/written figures are much improved. The time spent in direct\nreclaim and with kswapd are massively reduced, mostly by the lowlumpy\npatches.\n\nFTrace Reclaim Statistics: congestion_wait\nDirect number congest waited 725 303 126 3\nDirect time congest waited 45524ms 9180ms 5936ms 300ms\nDirect full congest waited 487 190 52 3\nDirect number conditional waited 0 0 200 301\nDirect time conditional waited 0ms 0ms 0ms 1904ms\nDirect full conditional waited 0 0 0 19\nKSwapd number congest waited 0 2 23 4\nKSwapd time congest waited 0ms 200ms 420ms 404ms\nKSwapd full congest waited 0 2 2 4\nKSwapd number conditional waited 0 0 0 0\nKSwapd time conditional waited 0ms 0ms 0ms 0ms\nKSwapd full conditional waited 0 0 0 0\n\nNot as dramatic a story here but the time spent asleep is reduced and we\ncan still see what wait_iff_congested is going to sleep when necessary.\n\nMMTests Statistics: duration\nUser/Sys Time Running Test (seconds) 12028.09 3157.17 3357.79 3199.16\nTotal Elapsed Time (seconds) 10842.07 3138.72 3705.54 3229.85\n\nThe time to complete this test goes way down. With the full series, we\nare allocating over twice the number of huge pages in 30% of the time and\nthere is a corresponding impact on the allocation latency graph available\nat.\n\nhttp://www.csn.ul.ie/~mel/postings/vmscanreduce-20101509/highalloc-interlatency-powyah-mean.ps\n\nThis patch:\n\nAdd a trace event for shrink_inactive_list() and updates the sample\npostprocessing script appropriately. It can be used to determine how many\npages were reclaimed and for non-lumpy reclaim where exactly the pages\nwere reclaimed from.\n\nSigned-off-by: Mel Gorman \u003cmel@csn.ul.ie\u003e\nCc: Johannes Weiner \u003channes@cmpxchg.org\u003e\nCc: Minchan Kim \u003cminchan.kim@gmail.com\u003e\nCc: Wu Fengguang \u003cfengguang.wu@intel.com\u003e\nCc: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nCc: KOSAKI Motohiro \u003ckosaki.motohiro@jp.fujitsu.com\u003e\nCc: Rik van Riel \u003criel@redhat.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "1b430beee5e388605dfb092b214ef0320f752cf6", "tree": "c1b1ece282aab771fd1386a3fe0c6e82cb5c5bfe", "parents": [ "d19d5476f4b9f91d2de92b91588bb118beba6c0d" ], "author": { "name": "Wu Fengguang", "email": "fengguang.wu@intel.com", "time": "Tue Oct 26 14:21:26 2010 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Oct 26 16:52:05 2010 -0700" }, "message": "writeback: remove nonblocking/encountered_congestion references\n\nThis removes more dead code that was somehow missed by commit 0d99519efef\n(writeback: remove unused nonblocking and congestion checks). There are\nno behavior change except for the removal of two entries from one of the\next4 tracing interface.\n\nThe nonblocking checks in -\u003ewritepages are no longer used because the\nflusher now prefer to block on get_request_wait() than to skip inodes on\nIO congestion. The latter will lead to more seeky IO.\n\nThe nonblocking checks in -\u003ewritepage are no longer used because it\u0027s\nredundant with the WB_SYNC_NONE check.\n\nWe no long set -\u003enonblocking in VM page out and page migration, because\na) it\u0027s effectively redundant with WB_SYNC_NONE in current code\nb) it\u0027s old semantic of \"Don\u0027t get stuck on request queues\" is mis-behavior:\n that would skip some dirty inodes on congestion and page out others, which\n is unfair in terms of LRU age.\n\nInspired by Christoph Hellwig. Thanks!\n\nSigned-off-by: Wu Fengguang \u003cfengguang.wu@intel.com\u003e\nCc: Theodore Ts\u0027o \u003ctytso@mit.edu\u003e\nCc: David Howells \u003cdhowells@redhat.com\u003e\nCc: Sage Weil \u003csage@newdream.net\u003e\nCc: Steve French \u003csfrench@samba.org\u003e\nCc: Chris Mason \u003cchris.mason@oracle.com\u003e\nCc: Jens Axboe \u003caxboe@kernel.dk\u003e\nCc: Christoph Hellwig \u003chch@infradead.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "b8ecad8b2f8757d51632b1ea6d602c1f7b9760a2", "tree": "5a03029dbf02df606fa48a82525eb321e59b5c33", "parents": [ "eea4a0b19a2719e3e23b5450dd9fbe97789d2a57", "8bfb5e7d6a14b29cffddd113f4b0be7d9aafc1e8" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Sat Oct 23 20:05:43 2010 +0200" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Sat Oct 23 20:05:43 2010 +0200" }, "message": "Merge branch \u0027perf/core\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux-2.6 into perf/urgent\n" }, { "commit": "91b745016c12d440386c40fb76ab69c8e08cbc06", "tree": "881a26a43b3ee924c0979a54b38c7a87d79d7f1a", "parents": [ "04cc69768e7d1f40d98b79d23d203674553b4da2", "daaae6b010ac0f60c9c35e481589966f9f1fcc22" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Fri Oct 22 17:13:10 2010 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Fri Oct 22 17:13:10 2010 -0700" }, "message": "Merge branch \u0027for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq\n\n* \u0027for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq:\n workqueue: remove in_workqueue_context()\n workqueue: Clarify that schedule_on_each_cpu is synchronous\n memory_hotplug: drop spurious calls to flush_scheduled_work()\n shpchp: update workqueue usage\n pciehp: update workqueue usage\n isdn/eicon: don\u0027t call flush_scheduled_work() from diva_os_remove_soft_isr()\n workqueue: add and use WQ_MEM_RECLAIM flag\n workqueue: fix HIGHPRI handling in keep_working()\n workqueue: add queue_work and activate_work trace points\n workqueue: prepare for more tracepoints\n workqueue: implement flush[_delayed]_work_sync()\n workqueue: factor out start_flush_work()\n workqueue: cleanup flush/cancel functions\n workqueue: implement alloc_ordered_workqueue()\n\nFix up trivial conflict in fs/gfs2/main.c as per Tejun\n" }, { "commit": "bc4016f48161454a9a8e5eb209b0693c6cde9f62", "tree": "f470f5d711e975b152eec90282f5dd30a1d5dba5", "parents": [ "5d70f79b5ef6ea2de4f72a37b2d96e2601e40a22", "b7dadc38797584f6203386da1947ed5edf516646" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Oct 21 12:55:43 2010 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Oct 21 12:55:43 2010 -0700" }, "message": "Merge branch \u0027sched-core-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip\n\n* \u0027sched-core-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (29 commits)\n sched: Export account_system_vtime()\n sched: Call tick_check_idle before __irq_enter\n sched: Remove irq time from available CPU power\n sched: Do not account irq time to current task\n x86: Add IRQ_TIME_ACCOUNTING\n sched: Add IRQ_TIME_ACCOUNTING, finer accounting of irq time\n sched: Add a PF flag for ksoftirqd identification\n sched: Consolidate account_system_vtime extern declaration\n sched: Fix softirq time accounting\n sched: Drop group_capacity to 1 only if local group has extra capacity\n sched: Force balancing on newidle balance if local group has capacity\n sched: Set group_imb only a task can be pulled from the busiest cpu\n sched: Do not consider SCHED_IDLE tasks to be cache hot\n sched: Drop all load weight manipulation for RT tasks\n sched: Create special class for stop/migrate work\n sched: Unindent labels\n sched: Comment updates: fix default latency and granularity numbers\n tracing/sched: Add sched_pi_setprio tracepoint\n sched: Give CPU bound RT tasks preference\n sched: Try not to migrate higher priority RT tasks\n ...\n" }, { "commit": "f4bc6bb2d562703eafc895c37e7be20906de139d", "tree": "e80d4ed1bc925a2236773eff7d68163c534efea3", "parents": [ "750ed158bf6c782d2813da1bca2c824365a0b777" ], "author": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Tue Oct 19 15:00:13 2010 +0200" }, "committer": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Thu Oct 21 16:50:29 2010 +0200" }, "message": "tracing: Cleanup the convoluted softirq tracepoints\n\nWith the addition of trace_softirq_raise() the softirq tracepoint got\neven more convoluted. Why the tracepoints take two pointers to assign\nan integer is beyond my comprehension.\n\nBut adding an extra case which treats the first pointer as an unsigned\nlong when the second pointer is NULL including the back and forth\ntype casting is just horrible.\n\nConvert the softirq tracepoints to take a single unsigned int argument\nfor the softirq vector number and fix the call sites.\n\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\nLKML-Reference: \u003calpine.LFD.2.00.1010191428560.6815@localhost6.localdomain6\u003e\nAcked-by: Peter Zijlstra \u003cpeterz@infradead.org\u003e\nAcked-by: mathieu.desnoyers@efficios.com\nCc: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\nCc: Steven Rostedt \u003crostedt@goodmis.org\u003e\n\n" }, { "commit": "cdadf0097cdca06c497ffaeb5982e028c6e4ed38", "tree": "e02400ea54981e9621a30d3a2ce013e14f657e2e", "parents": [ "97bd234701b2b39a0e749c1fe0e44f1d14c94292" ], "author": { "name": "Tejun Heo", "email": "tj@kernel.org", "time": "Tue Oct 05 10:49:55 2010 +0200" }, "committer": { "name": "Tejun Heo", "email": "tj@kernel.org", "time": "Tue Oct 05 10:49:55 2010 +0200" }, "message": "workqueue: add queue_work and activate_work trace points\n\nThese two tracepoints allow tracking when and how a work is queued and\nactivated. This patch is based on Frederic\u0027s patch to add queue_work\ntrace point.\n\nSigned-off-by: Tejun Heo \u003ctj@kernel.org\u003e\nCc: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\n" }, { "commit": "97bd234701b2b39a0e749c1fe0e44f1d14c94292", "tree": "fffbd48576c507f8a2e186ad0ebbf777aadf8bf0", "parents": [ "09383498c5d35262e643bfdbae84826177a3c624" ], "author": { "name": "Tejun Heo", "email": "tj@kernel.org", "time": "Tue Oct 05 10:41:14 2010 +0200" }, "committer": { "name": "Tejun Heo", "email": "tj@kernel.org", "time": "Tue Oct 05 10:41:14 2010 +0200" }, "message": "workqueue: prepare for more tracepoints\n\nDefine workqueue_work event class and use it for workqueue_execute_end\ntrace point. Also, move trace/events/workqueue.h include downwards\nsuch that all struct definitions are visible to it. This is to\nprepare for more tracepoints and doesn\u0027t cause any functional change.\n\nSigned-off-by: Tejun Heo \u003ctj@kernel.org\u003e\nCc: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\n" }, { "commit": "a8027073eb127cd207070891374b5c54c2ce3d23", "tree": "27f5dc8effe3b5636d4bab9c890a40aa20fa44e6", "parents": [ "b3bc211cfe7d5fe94b310480d78e00bea96fbf2a" ], "author": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Mon Sep 20 15:13:34 2010 -0400" }, "committer": { "name": "Steven Rostedt", "email": "rostedt@goodmis.org", "time": "Tue Sep 21 10:56:41 2010 -0400" }, "message": "tracing/sched: Add sched_pi_setprio tracepoint\n\nAdd a tracepoint that shows the priority of a task being boosted\nvia priority inheritance.\n\nCc: Gregory Haskins \u003cghaskins@novell.com\u003e\nAcked-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nSigned-off-by: Steven Rostedt \u003crostedt@goodmis.org\u003e\n" }, { "commit": "74704ac6ea402d50c9543cb28247e6d9f521f7ae", "tree": "8b3b9e175d48193b0c30db116164d5cc26f46cba", "parents": [ "635c17c2b2b4e5cd34f5dcba19d751b4e58533c2" ], "author": { "name": "Jean Pihet", "email": "jean.pihet@newoldbits.com", "time": "Tue Sep 07 09:21:32 2010 +0200" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Fri Sep 17 09:10:43 2010 +0200" }, "message": "tracing, perf: Add more power related events\n\nThis patch adds new generic events for dynamic power management\ntracing:\n\n - clock events class: used for clock enable/disable and for\n clock rate change,\n - power_domain events class: used for power domains transitions.\n\nThe OMAP architecture will be using the new events for PM debugging,\nhowever the new events are made generic enough to be used by all\nplatforms.\n\nSigned-off-by: Jean Pihet \u003cj-pihet@ti.com\u003e\nAcked-by: Thomas Renninger \u003ctrenn@suse.de\u003e\nCc: discuss@lesswatts.org\nCc: linux-pm@lists.linux-foundation.org\nCc: Thomas Renninger \u003ctrenn@suse.de\u003e\nCc: Arjan van de Ven \u003carjan@linux.intel.com\u003e\nCc: Peter Zijlstra \u003cpeterz@infradead.org\u003e\nCc: Len Brown \u003clen.brown@intel.com\u003e\nCc: Kevin Hilman \u003ckhilman@deeprootsystems.com\u003e\nLKML-Reference: \u003cAANLkTinUmbSUUuxUzc8++pcb9gd1CZFdyTQFrveTBXyV@mail.gmail.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "07dc22e7295f25526f110d704655ff0ea7687420", "tree": "026b83a634d949d80cff48a91ecc38419bba8821", "parents": [ "cf66ba58b5cb8b1526e9dd2fb96ff8db048d4d44" ], "author": { "name": "Koki Sanagi", "email": "sanagi.koki@jp.fujitsu.com", "time": "Mon Aug 23 18:46:12 2010 +0900" }, "committer": { "name": "Frederic Weisbecker", "email": "fweisbec@gmail.com", "time": "Tue Sep 07 17:51:53 2010 +0200" }, "message": "skb: Add tracepoints to freeing skb\n\nThis patch adds tracepoint to consume_skb and add trace_kfree_skb\nbefore __kfree_skb in skb_free_datagram_locked and net_tx_action.\nCombinating with tracepoint on dev_hard_start_xmit, we can check\nhow long it takes to free transmitted packets. And using it, we can\ncalculate how many packets driver had at that time. It is useful when\na drop of transmitted packet is a problem.\n\n sshd-6828 [000] 112689.258154: consume_skb: skbaddr\u003df2d99bb8\n\nSigned-off-by: Koki Sanagi \u003csanagi.koki@jp.fujitsu.com\u003e\nAcked-by: David S. Miller \u003cdavem@davemloft.net\u003e\nAcked-by: Neil Horman \u003cnhorman@tuxdriver.com\u003e\nCc: Mathieu Desnoyers \u003cmathieu.desnoyers@efficios.com\u003e\nCc: Kaneshige Kenji \u003ckaneshige.kenji@jp.fujitsu.com\u003e\nCc: Izumo Taku \u003cizumi.taku@jp.fujitsu.com\u003e\nCc: Kosaki Motohiro \u003ckosaki.motohiro@jp.fujitsu.com\u003e\nCc: Lai Jiangshan \u003claijs@cn.fujitsu.com\u003e\nCc: Scott Mcmillan \u003cscott.a.mcmillan@intel.com\u003e\nCc: Steven Rostedt \u003crostedt@goodmis.org\u003e\nCc: Eric Dumazet \u003ceric.dumazet@gmail.com\u003e\nLKML-Reference: \u003c4C724364.50903@jp.fujitsu.com\u003e\nSigned-off-by: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\n" }, { "commit": "cf66ba58b5cb8b1526e9dd2fb96ff8db048d4d44", "tree": "e9adada8f043f162dd1fea6ebb9091c66fee8eca", "parents": [ "3e4b10d7a4d2a78af64f8096dc7cdb3bebd65adb" ], "author": { "name": "Koki Sanagi", "email": "sanagi.koki@jp.fujitsu.com", "time": "Mon Aug 23 18:45:02 2010 +0900" }, "committer": { "name": "Frederic Weisbecker", "email": "fweisbec@gmail.com", "time": "Tue Sep 07 17:51:33 2010 +0200" }, "message": "netdev: Add tracepoints to netdev layer\n\nThis patch adds tracepoint to dev_queue_xmit, dev_hard_start_xmit,\nnetif_rx and netif_receive_skb. These tracepoints help you to monitor\nnetwork driver\u0027s input/output.\n\n \u003cidle\u003e-0 [001] 112447.902030: netif_rx: dev\u003deth1 skbaddr\u003df3ef0900 len\u003d84\n \u003cidle\u003e-0 [001] 112447.902039: netif_receive_skb: dev\u003deth1 skbaddr\u003df3ef0900 len\u003d84\n sshd-6828 [000] 112447.903257: net_dev_queue: dev\u003deth4 skbaddr\u003df3fca538 len\u003d226\n sshd-6828 [000] 112447.903260: net_dev_xmit: dev\u003deth4 skbaddr\u003df3fca538 len\u003d226 rc\u003d0\n\nSigned-off-by: Koki Sanagi \u003csanagi.koki@jp.fujitsu.com\u003e\nAcked-by: David S. Miller \u003cdavem@davemloft.net\u003e\nAcked-by: Neil Horman \u003cnhorman@tuxdriver.com\u003e\nCc: Mathieu Desnoyers \u003cmathieu.desnoyers@efficios.com\u003e\nCc: Kaneshige Kenji \u003ckaneshige.kenji@jp.fujitsu.com\u003e\nCc: Izumo Taku \u003cizumi.taku@jp.fujitsu.com\u003e\nCc: Kosaki Motohiro \u003ckosaki.motohiro@jp.fujitsu.com\u003e\nCc: Lai Jiangshan \u003claijs@cn.fujitsu.com\u003e\nCc: Scott Mcmillan \u003cscott.a.mcmillan@intel.com\u003e\nCc: Steven Rostedt \u003crostedt@goodmis.org\u003e\nCc: Eric Dumazet \u003ceric.dumazet@gmail.com\u003e\nLKML-Reference: \u003c4C72431E.3000901@jp.fujitsu.com\u003e\nSigned-off-by: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\n" }, { "commit": "3e4b10d7a4d2a78af64f8096dc7cdb3bebd65adb", "tree": "c2976770262d832d2855d63cd7df05b31705e40c", "parents": [ "2bf2160d8805de64308e2e7c3cd97813cb58ed2f" ], "author": { "name": "Neil Horman", "email": "nhorman@tuxdriver.com", "time": "Mon Aug 23 18:43:51 2010 +0900" }, "committer": { "name": "Frederic Weisbecker", "email": "fweisbec@gmail.com", "time": "Tue Sep 07 17:51:01 2010 +0200" }, "message": "napi: Convert trace_napi_poll to TRACE_EVENT\n\nThis patch converts trace_napi_poll from DECLARE_EVENT to TRACE_EVENT\nto improve the usability of napi_poll tracepoint.\n\n \u003cidle\u003e-0 [001] 241302.750777: napi_poll: napi poll on napi struct f6acc480 for device eth3\n \u003cidle\u003e-0 [000] 241302.852389: napi_poll: napi poll on napi struct f5d0d70c for device eth1\n\nThe original patch is below:\nhttp://marc.info/?l\u003dlinux-kernel\u0026m\u003d126021713809450\u0026w\u003d2\n\n[ sanagi.koki@jp.fujitsu.com: And add a fix by Steven Rostedt:\nhttp://marc.info/?l\u003dlinux-kernel\u0026m\u003d126150506519173\u0026w\u003d2 ]\n\nSigned-off-by: Neil Horman \u003cnhorman@tuxdriver.com\u003e\nAcked-by: David S. Miller \u003cdavem@davemloft.net\u003e\nAcked-by: Neil Horman \u003cnhorman@tuxdriver.com\u003e\nCc: Mathieu Desnoyers \u003cmathieu.desnoyers@efficios.com\u003e\nCc: Kaneshige Kenji \u003ckaneshige.kenji@jp.fujitsu.com\u003e\nCc: Izumo Taku \u003cizumi.taku@jp.fujitsu.com\u003e\nCc: Kosaki Motohiro \u003ckosaki.motohiro@jp.fujitsu.com\u003e\nCc: Lai Jiangshan \u003claijs@cn.fujitsu.com\u003e\nCc: Scott Mcmillan \u003cscott.a.mcmillan@intel.com\u003e\nCc: Steven Rostedt \u003crostedt@goodmis.org\u003e\nCc: Eric Dumazet \u003ceric.dumazet@gmail.com\u003e\nLKML-Reference: \u003c4C7242D7.4050009@jp.fujitsu.com\u003e\nSigned-off-by: Koki Sanagi \u003csanagi.koki@jp.fujitsu.com\u003e\nSigned-off-by: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\n" }, { "commit": "2bf2160d8805de64308e2e7c3cd97813cb58ed2f", "tree": "ae2b275516c7fb6f09f85eacb195c6cde42c68e3", "parents": [ "f6195aa09e618d712f52bf4fa33b5293820eb93d" ], "author": { "name": "Lai Jiangshan", "email": "laijs@cn.fujitsu.com", "time": "Mon Aug 23 18:42:48 2010 +0900" }, "committer": { "name": "Frederic Weisbecker", "email": "fweisbec@gmail.com", "time": "Tue Sep 07 17:49:34 2010 +0200" }, "message": "irq: Add tracepoint to softirq_raise\n\nAdd a tracepoint for tracing when softirq action is raised.\n\nThis and the existing tracepoints complete softirq\u0027s tracepoints:\nsoftirq_raise, softirq_entry and softirq_exit.\n\nAnd when this tracepoint is used in combination with\nthe softirq_entry tracepoint we can determine\nthe softirq raise latency.\n\nSigned-off-by: Lai Jiangshan \u003claijs@cn.fujitsu.com\u003e\nAcked-by: Mathieu Desnoyers \u003cmathieu.desnoyers@efficios.com\u003e\nAcked-by: Neil Horman \u003cnhorman@tuxdriver.com\u003e\nCc: David Miller \u003cdavem@davemloft.net\u003e\nCc: Kaneshige Kenji \u003ckaneshige.kenji@jp.fujitsu.com\u003e\nCc: Izumo Taku \u003cizumi.taku@jp.fujitsu.com\u003e\nCc: Kosaki Motohiro \u003ckosaki.motohiro@jp.fujitsu.com\u003e\nCc: Lai Jiangshan \u003claijs@cn.fujitsu.com\u003e\nCc: Scott Mcmillan \u003cscott.a.mcmillan@intel.com\u003e\nCc: Steven Rostedt \u003crostedt@goodmis.org\u003e\nCc: Eric Dumazet \u003ceric.dumazet@gmail.com\u003e\nLKML-Reference: \u003c4C724298.4050509@jp.fujitsu.com\u003e\n[ factorize softirq events with DECLARE_EVENT_CLASS ]\nSigned-off-by: Koki Sanagi \u003csanagi.koki@jp.fujitsu.com\u003e\nSigned-off-by: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\n" }, { "commit": "502adf5778f4151dcba3f64dd6ed322151f3712c", "tree": "ad14adb37dedaefabdaf93b08ab9d32bc140ed81", "parents": [ "3b6c5507a69861e80c26f21d04601c674cbeec3d", "c6db67cda735d8ace5f19c3831240e1408679790" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Aug 24 12:21:49 2010 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Aug 24 12:21:49 2010 -0700" }, "message": "Merge branch \u0027perf-fixes-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip\n\n* \u0027perf-fixes-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:\n watchdog: Don\u0027t throttle the watchdog\n tracing: Fix timer tracing\n" }, { "commit": "e36c886a0f9d624377977fa6cae309cfd7f362fa", "tree": "f75e7c3e50a48c671ed4dff33103f601a2204af9", "parents": [ "69b26c7ad00fd5b6129400725e2ffb95134a0e1b" ], "author": { "name": "Arjan van de Ven", "email": "arjan@linux.intel.com", "time": "Sat Aug 21 13:07:26 2010 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Sat Aug 21 13:19:37 2010 -0700" }, "message": "workqueue: Add basic tracepoints to track workqueue execution\n\nWith the introduction of the new unified work queue thread pools,\nwe lost one feature: It\u0027s no longer possible to know which worker\nis causing the CPU to wake out of idle. The result is that PowerTOP\nnow reports a lot of \"kworker/a:b\" instead of more readable results.\n\nThis patch adds a pair of tracepoints to the new workqueue code,\nsimilar in style to the timer/hrtimer tracepoints.\n\nWith this pair of tracepoints, the next PowerTOP can correctly\nreport which work item caused the wakeup (and how long it took):\n\nInterrupt (43) i915 time 3.51ms wakeups 141\nWork ieee80211_iface_work time 0.81ms wakeups 29\nWork do_dbs_timer time 0.55ms wakeups 24\nProcess Xorg time 21.36ms wakeups 4\nTimer sched_rt_period_timer time 0.01ms wakeups 1\n\nSigned-off-by: Arjan van de Ven \u003carjan@linux.intel.com\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "ede1b4290781ae82ccf0f2ecc6dada8d3dd35779", "tree": "8cc85b36b0450f3e1c2d808cb15ecbc7fa931ca3", "parents": [ "737480a0d525dae13306296da08029dff545bc72" ], "author": { "name": "Arjan van de Ven", "email": "arjan@linux.intel.com", "time": "Wed Aug 18 15:33:13 2010 -0700" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Thu Aug 19 13:00:41 2010 +0200" }, "message": "tracing: Fix timer tracing\n\nPowerTOP would like to be able to trace timers.\n\nUnfortunately, the current timer tracing is not very useful: the\nactual timer function is not recorded in the trace at the start\nof timer execution.\n\nAlthough this is recorded for timer \"start\" time (when it gets\narmed), this is not useful; most timers get started early, and a\ntracer like PowerTOP will never see this event, but will only\nsee the actual running of the timer.\n\nThis patch just adds the function to the timer tracing; I\u0027ve\nverified with PowerTOP that now it can get useful information\nabout timers.\n\nSigned-off-by: Arjan van de Ven \u003carjan@linux.intel.com\u003e\nCc: xiaoguangrong@cn.fujitsu.com\nCc: Steven Rostedt \u003crostedt@goodmis.org\u003e\nCc: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\nCc: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nCc: \u003cstable@kernel.org\u003e # .35.x, .34.x, .33.x\nLKML-Reference: \u003c4C6C5FA9.3000405@linux.intel.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "2f9e825d3e0e2b407ae8f082de5c00afcf7378fb", "tree": "f8b3ee40674ce4acd5508a0a0bf52a30904caf6c", "parents": [ "7ae0dea900b027cd90e8a3e14deca9a19e17638b", "de75d60d5ea235e6e09f4962ab22541ce0fe176a" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Aug 10 15:22:42 2010 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Aug 10 15:22:42 2010 -0700" }, "message": "Merge branch \u0027for-2.6.36\u0027 of git://git.kernel.dk/linux-2.6-block\n\n* \u0027for-2.6.36\u0027 of git://git.kernel.dk/linux-2.6-block: (149 commits)\n block: make sure that REQ_* types are seen even with CONFIG_BLOCK\u003dn\n xen-blkfront: fix missing out label\n blkdev: fix blkdev_issue_zeroout return value\n block: update request stacking methods to support discards\n block: fix missing export of blk_types.h\n writeback: fix bad _bh spinlock nesting\n drbd: revert \"delay probes\", feature is being re-implemented differently\n drbd: Initialize all members of sync_conf to their defaults [Bugz 315]\n drbd: Disable delay probes for the upcomming release\n writeback: cleanup bdi_register\n writeback: add new tracepoints\n writeback: remove unnecessary init_timer call\n writeback: optimize periodic bdi thread wakeups\n writeback: prevent unnecessary bdi threads wakeups\n writeback: move bdi threads exiting logic to the forker thread\n writeback: restructure bdi forker loop a little\n writeback: move last_active to bdi\n writeback: do not remove bdi from bdi_list\n writeback: simplify bdi code a little\n writeback: do not lose wake-ups in bdi threads\n ...\n\nFixed up pretty trivial conflicts in drivers/block/virtio_blk.c and\ndrivers/scsi/scsi_error.c as per Jens.\n" }, { "commit": "cc8e970c3ce4d98afa8eb02dbd2526ce57f7611a", "tree": "621ce988444b6df6eb67058b05ca5ddef23f6103", "parents": [ "e17613c39b8894c164df782d0508c27ca559c24b" ], "author": { "name": "KOSAKI Motohiro", "email": "kosaki.motohiro@jp.fujitsu.com", "time": "Mon Aug 09 17:19:57 2010 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Mon Aug 09 20:45:03 2010 -0700" }, "message": "memcg: add mm_vmscan_memcg_isolate tracepoint\n\nMemcg also need to trace page isolation information as global reclaim.\nThis patch does it.\n\nSigned-off-by: KOSAKI Motohiro \u003ckosaki.motohiro@jp.fujitsu.com\u003e\nReviewed-by: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nAcked-by: Mel Gorman \u003cmel@csn.ul.ie\u003e\nAcked-by: Balbir Singh \u003cbalbir@linux.vnet.ibm.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "e17613c39b8894c164df782d0508c27ca559c24b", "tree": "9d256ead495ad9ad1568fdb7763460865a24c7b6", "parents": [ "bdce6d9ebf52c1f6c23163d1a33320ce7c007f73" ], "author": { "name": "KOSAKI Motohiro", "email": "kosaki.motohiro@jp.fujitsu.com", "time": "Mon Aug 09 17:19:57 2010 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Mon Aug 09 20:45:03 2010 -0700" }, "message": "vmscan: convert mm_vmscan_lru_isolate to DEFINE_EVENT\n\nMel Gorman recently added some vmscan tracepoints. Unfortunately they are\ncovered only global reclaim. But we want to trace memcg reclaim too.\n\nThus, this patch convert them to DEFINE_TRACE macro. it help to reuse\ntracepoint definition for other similar usage (i.e. memcg). This patch\nhave no functionally change.\n\nSigned-off-by: KOSAKI Motohiro \u003ckosaki.motohiro@jp.fujitsu.com\u003e\nReviewed-by: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nAcked-by: Balbir Singh \u003cbalbir@linux.vnet.ibm.com\u003e\nAcked-by: Mel Gorman \u003cmel@csn.ul.ie\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "bdce6d9ebf52c1f6c23163d1a33320ce7c007f73", "tree": "6070de94cdece474e277d8878721421671e212eb", "parents": [ "cf4dcc3e9b374e1b61a7c22faf868707ce78d6a9" ], "author": { "name": "KOSAKI Motohiro", "email": "kosaki.motohiro@jp.fujitsu.com", "time": "Mon Aug 09 17:19:56 2010 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Mon Aug 09 20:45:03 2010 -0700" }, "message": "memcg, vmscan: add memcg reclaim tracepoint\n\nMemcg also need to trace reclaim progress as direct reclaim. This patch\nadd it.\n\nSigned-off-by: KOSAKI Motohiro \u003ckosaki.motohiro@jp.fujitsu.com\u003e\nReviewed-by: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nAcked-by: Mel Gorman \u003cmel@csn.ul.ie\u003e\nAcked-by: Balbir Singh \u003cbalbir@linux.vnet.ibm.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "cf4dcc3e9b374e1b61a7c22faf868707ce78d6a9", "tree": "eb46339e98467b74a089d596b63d79441408caec", "parents": [ "4dc4b3d971b23e12d483ba9f3b93b648c54b298a" ], "author": { "name": "KOSAKI Motohiro", "email": "kosaki.motohiro@jp.fujitsu.com", "time": "Mon Aug 09 17:19:55 2010 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Mon Aug 09 20:45:03 2010 -0700" }, "message": "vmscan: convert direct reclaim tracepoint to DEFINE_TRACE\n\nMel Gorman recently added some vmscan tracepoints. Unfortunately they are\ncovered only global reclaim. But we want to trace memcg reclaim too.\n\nThus, this patch convert them to DEFINE_TRACE macro. it help to reuse\ntracepoint definition for other similar usage (i.e. memcg). This patch\nhave no functionally change.\n\nSigned-off-by: KOSAKI Motohiro \u003ckosaki.motohiro@jp.fujitsu.com\u003e\nReviewed-by: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nAcked-by: Mel Gorman \u003cmel@csn.ul.ie\u003e\nAcked-by: Balbir Singh \u003cbalbir@linux.vnet.ibm.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "755f0225e8347b23a33ee6e3fb14a35310f95766", "tree": "23489e9f52f1435c7b8bc4da8e98d607460e4e23", "parents": [ "a8a94d151521b248727c1f88756174e15260815a" ], "author": { "name": "Mel Gorman", "email": "mel@csn.ul.ie", "time": "Mon Aug 09 17:19:18 2010 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Mon Aug 09 20:45:00 2010 -0700" }, "message": "vmscan: tracing: add trace event when a page is written\n\nAdd a trace event for when page reclaim queues a page for IO and records\nwhether it is synchronous or asynchronous. Excessive synchronous IO for a\nprocess can result in noticeable stalls during direct reclaim. Excessive\nIO from page reclaim may indicate that the system is seriously under\nprovisioned for the amount of dirty pages that exist.\n\nSigned-off-by: Mel Gorman \u003cmel@csn.ul.ie\u003e\nAcked-by: Rik van Riel \u003criel@redhat.com\u003e\nAcked-by: Larry Woodman \u003clwoodman@redhat.com\u003e\nCc: Dave Chinner \u003cdavid@fromorbit.com\u003e\nCc: Chris Mason \u003cchris.mason@oracle.com\u003e\nCc: Nick Piggin \u003cnpiggin@suse.de\u003e\nCc: Rik van Riel \u003criel@redhat.com\u003e\nCc: Johannes Weiner \u003channes@cmpxchg.org\u003e\nCc: Christoph Hellwig \u003chch@infradead.org\u003e\nCc: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nCc: KOSAKI Motohiro \u003ckosaki.motohiro@jp.fujitsu.com\u003e\nCc: Andrea Arcangeli \u003caarcange@redhat.com\u003e\nCc: Michael Rubin \u003cmrubin@google.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "a8a94d151521b248727c1f88756174e15260815a", "tree": "81ea18e9c52f6260f9b52b16e592cc89bfd9d260", "parents": [ "33906bc5c87b50028364405ec425de9638afc719" ], "author": { "name": "Mel Gorman", "email": "mel@csn.ul.ie", "time": "Mon Aug 09 17:19:17 2010 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Mon Aug 09 20:44:59 2010 -0700" }, "message": "vmscan: tracing: add trace events for LRU page isolation\n\nAdd an event for when pages are isolated en-masse from the LRU lists.\nThis event augments the information available on LRU traffic and can be\nused to evaluate lumpy reclaim.\n\n[akpm@linux-foundation.org: coding-style fixes]\nSigned-off-by: Mel Gorman \u003cmel@csn.ul.ie\u003e\nAcked-by: Rik van Riel \u003criel@redhat.com\u003e\nAcked-by: Larry Woodman \u003clwoodman@redhat.com\u003e\nCc: Dave Chinner \u003cdavid@fromorbit.com\u003e\nCc: Chris Mason \u003cchris.mason@oracle.com\u003e\nCc: Nick Piggin \u003cnpiggin@suse.de\u003e\nCc: Rik van Riel \u003criel@redhat.com\u003e\nCc: Johannes Weiner \u003channes@cmpxchg.org\u003e\nCc: Christoph Hellwig \u003chch@infradead.org\u003e\nCc: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nCc: KOSAKI Motohiro \u003ckosaki.motohiro@jp.fujitsu.com\u003e\nCc: Andrea Arcangeli \u003caarcange@redhat.com\u003e\nCc: Michael Rubin \u003cmrubin@google.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "33906bc5c87b50028364405ec425de9638afc719", "tree": "d5d6f431bd517a4a914972f3ce968dc99de73694", "parents": [ "c6a8a8c589b53f90854a07db3b5806ce111e826b" ], "author": { "name": "Mel Gorman", "email": "mel@csn.ul.ie", "time": "Mon Aug 09 17:19:16 2010 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Mon Aug 09 20:44:59 2010 -0700" }, "message": "vmscan: tracing: add trace events for kswapd wakeup, sleeping and direct reclaim\n\nAdd two trace events for kswapd waking up and going asleep for the\npurposes of tracking kswapd activity and two trace events for direct\nreclaim beginning and ending. The information can be used to work out how\nmuch time a process or the system is spending on the reclamation of pages\nand in the case of direct reclaim, how many pages were reclaimed for that\nprocess. High frequency triggering of these events could point to memory\npressure problems.\n\nSigned-off-by: Mel Gorman \u003cmel@csn.ul.ie\u003e\nAcked-by: Rik van Riel \u003criel@redhat.com\u003e\nAcked-by: Larry Woodman \u003clwoodman@redhat.com\u003e\nCc: Dave Chinner \u003cdavid@fromorbit.com\u003e\nCc: Chris Mason \u003cchris.mason@oracle.com\u003e\nCc: Nick Piggin \u003cnpiggin@suse.de\u003e\nCc: Rik van Riel \u003criel@redhat.com\u003e\nCc: Johannes Weiner \u003channes@cmpxchg.org\u003e\nCc: Christoph Hellwig \u003chch@infradead.org\u003e\nCc: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nCc: KOSAKI Motohiro \u003ckosaki.motohiro@jp.fujitsu.com\u003e\nCc: Andrea Arcangeli \u003caarcange@redhat.com\u003e\nCc: Michael Rubin \u003cmrubin@google.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "09dc942c2a767e2d298f1cc9294bc19c7d7208c5", "tree": "d310c118467c90c264e953bdc320ae08394c662a", "parents": [ "90e0c225968f0878e090c7ff3f88323973476cee", "6c7a120ac6c62316ab1fc78dfc0a7b13f3bfcbff" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Sat Aug 07 13:03:53 2010 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Sat Aug 07 13:03:53 2010 -0700" }, "message": "Merge branch \u0027next\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4\n\n* \u0027next\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4: (40 commits)\n ext4: Adding error check after calling ext4_mb_regular_allocator()\n ext4: Fix dirtying of journalled buffers in data\u003djournal mode\n ext4: re-inline ext4_rec_len_(to|from)_disk functions\n jbd2: Remove t_handle_lock from start_this_handle()\n jbd2: Change j_state_lock to be a rwlock_t\n jbd2: Use atomic variables to avoid taking t_handle_lock in jbd2_journal_stop\n ext4: Add mount options in superblock\n ext4: force block allocation on quota_off\n ext4: fix freeze deadlock under IO\n ext4: drop inode from orphan list if ext4_delete_inode() fails\n ext4: check to make make sure bd_dev is set before dereferencing it\n jbd2: Make barrier messages less scary\n ext4: don\u0027t print scary messages for allocation failures post-abort\n ext4: fix EFBIG edge case when writing to large non-extent file\n ext4: fix ext4_get_blocks references\n ext4: Always journal quota file modifications\n ext4: Fix potential memory leak in ext4_fill_super\n ext4: Don\u0027t error out the fs if the user tries to make a file too big\n ext4: allocate stripe-multiple IOs on stripe boundaries\n ext4: move aio completion after unwritten extent conversion\n ...\n\nFix up conflicts in fs/ext4/inode.c as per Ted.\n\nFix up xfs conflicts as per earlier xfs merge.\n" }, { "commit": "3b7433b8a8a83c87972065b1852b7dcae691e464", "tree": "93fa2c003f8baef5ab0733b53bac77961ed5240c", "parents": [ "4a386c3e177ca2fbc70c9283d0b46537844763a0", "6ee0578b4daaea01c96b172c6aacca43fd9807a6" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Sat Aug 07 12:42:58 2010 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Sat Aug 07 12:42:58 2010 -0700" }, "message": "Merge branch \u0027for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq\n\n* \u0027for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq: (55 commits)\n workqueue: mark init_workqueues() as early_initcall()\n workqueue: explain for_each_*cwq_cpu() iterators\n fscache: fix build on !CONFIG_SYSCTL\n slow-work: kill it\n gfs2: use workqueue instead of slow-work\n drm: use workqueue instead of slow-work\n cifs: use workqueue instead of slow-work\n fscache: drop references to slow-work\n fscache: convert operation to use workqueue instead of slow-work\n fscache: convert object to use workqueue instead of slow-work\n workqueue: fix how cpu number is stored in work-\u003edata\n workqueue: fix mayday_mask handling on UP\n workqueue: fix build problem on !CONFIG_SMP\n workqueue: fix locking in retry path of maybe_create_worker()\n async: use workqueue for worker pool\n workqueue: remove WQ_SINGLE_CPU and use WQ_UNBOUND instead\n workqueue: implement unbound workqueue\n workqueue: prepare for WQ_UNBOUND implementation\n libata: take advantage of cmwq and remove concurrency limitations\n workqueue: fix worker management invocation without pending works\n ...\n\nFixed up conflicts in fs/cifs/* as per Tejun. Other trivial conflicts in\ninclude/linux/workqueue.h, kernel/trace/Kconfig and kernel/workqueue.c\n" }, { "commit": "603320239fb436f175c8b6bfa43d5023c47a6dc2", "tree": "efe1e78de6c2b8029cdcdcad2e98e3ef6c017900", "parents": [ "b5048a6cb5455a16bdff26a4c5ae9534f070d94c" ], "author": { "name": "Artem Bityutskiy", "email": "Artem.Bityutskiy@nokia.com", "time": "Sun Jul 25 14:29:24 2010 +0300" }, "committer": { "name": "Jens Axboe", "email": "jaxboe@fusionio.com", "time": "Sat Aug 07 18:53:56 2010 +0200" }, "message": "writeback: add new tracepoints\n\nAdd 2 new trace points to the periodic write-back wake up case, just like we do\nin the \u0027bdi_queue_work()\u0027 function. Namely, introduce:\n\n1. trace_writeback_wake_thread(bdi)\n2. trace_writeback_wake_forker_thread(bdi)\n\nThe first event is triggered every time we wake up a bdi thread to start\nperiodic background write-out. The second event is triggered only when the bdi\nthread does not exist and should be created by the forker thread.\n\nThis patch was suggested by Dave Chinner and Christoph Hellwig.\n\nSigned-off-by: Artem Bityutskiy \u003cArtem.Bityutskiy@nokia.com\u003e\nSigned-off-by: Jens Axboe \u003cjaxboe@fusionio.com\u003e\n" }, { "commit": "96dccab1d63cb35d3f5e75d2ef275fdbff4d5f3b", "tree": "d4baab082b2760be1bee774762c595ef389146e9", "parents": [ "10d1f9e2ccfff40665a00ea0e0a0d11e54c9cbb1" ], "author": { "name": "Randy Dunlap", "email": "randy.dunlap@oracle.com", "time": "Mon Jul 19 16:49:17 2010 -0700" }, "committer": { "name": "Jens Axboe", "email": "jaxboe@fusionio.com", "time": "Sat Aug 07 18:26:35 2010 +0200" }, "message": "writeback.h: needs linux/device.h\n\ninclude/trace/events/writeback.h uses dev_name(), so it needs to\ninclude linux/device.h.\n\ninclude/trace/events/writeback.h:12: error: implicit declaration of function \u0027dev_name\u0027\n\nSigned-off-by: Randy Dunlap \u003crandy.dunlap@oracle.com\u003e\nSigned-off-by: Jens Axboe \u003cjaxboe@fusionio.com\u003e\n" }, { "commit": "9e094383b60066996fbc3b53891324e5d2ec858d", "tree": "a3f4af7e60781f62b52dcfddd2032c3bbf933644", "parents": [ "028c2dd184c097809986684f2f0627eea5529fea" ], "author": { "name": "Dave Chinner", "email": "dchinner@redhat.com", "time": "Wed Jul 07 13:24:08 2010 +1000" }, "committer": { "name": "Jens Axboe", "email": "jaxboe@fusionio.com", "time": "Sat Aug 07 18:24:26 2010 +0200" }, "message": "writeback: Add tracing to write_cache_pages\n\nAdd a trace event to the -\u003ewritepage loop in write_cache_pages to give\nvisibility into how the -\u003ewritepage call is changing variables within the\nwriteback control structure. Of most interest is how wbc-\u003enr_to_write changes\nfrom call to call, especially with filesystems that write multiple pages\nin -\u003ewritepage.\n\nSigned-off-by: Dave Chinner \u003cdchinner@redhat.com\u003e\nReviewed-by: Christoph Hellwig \u003chch@lst.de\u003e\nSigned-off-by: Jens Axboe \u003cjaxboe@fusionio.com\u003e\n" } ], "next": "028c2dd184c097809986684f2f0627eea5529fea" }