)]}' { "log": [ { "commit": "dc92b1f9ab1e1665dbbc56911782358e7f9a49f9", "tree": "965ccb4a0f2c24a8b24adce415f6506246d07a90", "parents": [ "5e090ed7af10729a396a25df43d69a236e789736", "ca16f580a5db7e60bfafe59a50bb133bd3347491" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Sun Oct 07 21:04:56 2012 +0900" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Sun Oct 07 21:04:56 2012 +0900" }, "message": "Merge branch \u0027virtio-next\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux\n\nPull virtio changes from Rusty Russell:\n \"New workflow: same git trees pulled by linux-next get sent straight to\n Linus. Git is awkward at shuffling patches compared with quilt or mq,\n but that doesn\u0027t happen often once things get into my -next branch.\"\n\n* \u0027virtio-next\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux: (24 commits)\n lguest: fix occasional crash in example launcher.\n virtio-blk: Disable callback in virtblk_done()\n virtio_mmio: Don\u0027t attempt to create empty virtqueues\n virtio_mmio: fix off by one error allocating queue\n drivers/virtio/virtio_pci.c: fix error return code\n virtio: don\u0027t crash when device is buggy\n virtio: remove CONFIG_VIRTIO_RING\n virtio: add help to CONFIG_VIRTIO option.\n virtio: support reserved vqs\n virtio: introduce an API to set affinity for a virtqueue\n virtio-ring: move queue_index to vring_virtqueue\n virtio_balloon: not EXPERIMENTAL any more.\n virtio-balloon: dependency fix\n virtio-blk: fix NULL checking in virtblk_alloc_req()\n virtio-blk: Add REQ_FLUSH and REQ_FUA support to bio path\n virtio-blk: Add bio-based IO path for virtio-blk\n virtio: console: fix error handling in init() function\n tools: Fix pthread flag for Makefile of trace-agent used by virtio-trace\n tools: Add guest trace agent as a user tool\n virtio/console: Allocate scatterlist according to the current pipe size\n ...\n" }, { "commit": "437589a74b6a590d175f86cf9f7b2efcee7765e7", "tree": "37bf8635b1356d80ef002b00e84f3faf3d555a63", "parents": [ "68d47a137c3bef754923bccf73fb639c9b0bbd5e", "72235465864d84cedb2d9f26f8e1de824ee20339" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Oct 02 11:11:09 2012 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Oct 02 11:11:09 2012 -0700" }, "message": "Merge branch \u0027for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace\n\nPull user namespace changes from Eric Biederman:\n \"This is a mostly modest set of changes to enable basic user namespace\n support. This allows the code to code to compile with user namespaces\n enabled and removes the assumption there is only the initial user\n namespace. Everything is converted except for the most complex of the\n filesystems: autofs4, 9p, afs, ceph, cifs, coda, fuse, gfs2, ncpfs,\n nfs, ocfs2 and xfs as those patches need a bit more review.\n\n The strategy is to push kuid_t and kgid_t values are far down into\n subsystems and filesystems as reasonable. Leaving the make_kuid and\n from_kuid operations to happen at the edge of userspace, as the values\n come off the disk, and as the values come in from the network.\n Letting compile type incompatible compile errors (present when user\n namespaces are enabled) guide me to find the issues.\n\n The most tricky areas have been the places where we had an implicit\n union of uid and gid values and were storing them in an unsigned int.\n Those places were converted into explicit unions. I made certain to\n handle those places with simple trivial patches.\n\n Out of that work I discovered we have generic interfaces for storing\n quota by projid. I had never heard of the project identifiers before.\n Adding full user namespace support for project identifiers accounts\n for most of the code size growth in my git tree.\n\n Ultimately there will be work to relax privlige checks from\n \"capable(FOO)\" to \"ns_capable(user_ns, FOO)\" where it is safe allowing\n root in a user names to do those things that today we only forbid to\n non-root users because it will confuse suid root applications.\n\n While I was pushing kuid_t and kgid_t changes deep into the audit code\n I made a few other cleanups. I capitalized on the fact we process\n netlink messages in the context of the message sender. I removed\n usage of NETLINK_CRED, and started directly using current-\u003etty.\n\n Some of these patches have also made it into maintainer trees, with no\n problems from identical code from different trees showing up in\n linux-next.\n\n After reading through all of this code I feel like I might be able to\n win a game of kernel trivial pursuit.\"\n\nFix up some fairly trivial conflicts in netfilter uid/git logging code.\n\n* \u0027for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace: (107 commits)\n userns: Convert the ufs filesystem to use kuid/kgid where appropriate\n userns: Convert the udf filesystem to use kuid/kgid where appropriate\n userns: Convert ubifs to use kuid/kgid\n userns: Convert squashfs to use kuid/kgid where appropriate\n userns: Convert reiserfs to use kuid and kgid where appropriate\n userns: Convert jfs to use kuid/kgid where appropriate\n userns: Convert jffs2 to use kuid and kgid where appropriate\n userns: Convert hpfs to use kuid and kgid where appropriate\n userns: Convert btrfs to use kuid/kgid where appropriate\n userns: Convert bfs to use kuid/kgid where appropriate\n userns: Convert affs to use kuid/kgid wherwe appropriate\n userns: On alpha modify linux_to_osf_stat to use convert from kuids and kgids\n userns: On ia64 deal with current_uid and current_gid being kuid and kgid\n userns: On ppc convert current_uid from a kuid before printing.\n userns: Convert s390 getting uid and gid system calls to use kuid and kgid\n userns: Convert s390 hypfs to use kuid and kgid where appropriate\n userns: Convert binder ipc to use kuids\n userns: Teach security_path_chown to take kuids and kgids\n userns: Add user namespace support to IMA\n userns: Convert EVM to deal with kuids and kgids in it\u0027s hmac computation\n ...\n" }, { "commit": "d55cb6cf143ae16eaa415baab520b8eaf4a1012f", "tree": "449f118e54bc77d753e319fb5a5294611b86c36d", "parents": [ "efe75d24a69fc39bb09d882ca2d5b90d4da02afe" ], "author": { "name": "Masami Hiramatsu", "email": "masami.hiramatsu.pt@hitachi.com", "time": "Thu Aug 09 21:31:10 2012 +0900" }, "committer": { "name": "Rusty Russell", "email": "rusty@rustcorp.com.au", "time": "Fri Sep 28 15:05:12 2012 +0930" }, "message": "ftrace: Allow stealing pages from pipe buffer\n\nUse generic steal operation on pipe buffer to allow stealing\nring buffer\u0027s read page from pipe buffer.\n\nNote that this could reduce the performance of splice on the\nsplice_write side operation without affinity setting.\nSince the ring buffer\u0027s read pages are allocated on the\ntracing-node, but the splice user does not always execute\nsplice write side operation on the same node. In this case,\nthe page will be accessed from the another node.\nThus, it is strongly recommended to assign the splicing\nthread to corresponding node.\n\nSigned-off-by: Masami Hiramatsu \u003cmasami.hiramatsu.pt@hitachi.com\u003e\nAcked-by: Steven Rostedt \u003crostedt@goodmis.org\u003e\nSigned-off-by: Rusty Russell \u003crusty@rustcorp.com.au\u003e\n" }, { "commit": "5224c3a31549f1c056039545b289e1b01ed02f12", "tree": "30750af387cad904c3935418b0c17384abce1de8", "parents": [ "50a011f6409e888d5f41343024d24885281f048c" ], "author": { "name": "Mandeep Singh Baines", "email": "mandeep.baines@gmail.com", "time": "Fri Sep 07 18:12:19 2012 -0700" }, "committer": { "name": "Steven Rostedt", "email": "rostedt@goodmis.org", "time": "Mon Sep 24 14:10:44 2012 -0400" }, "message": "tracing: Add an option for disabling markers\n\nIn our application, we have trace markers spread through user-space.\nWe have markers in GL, X, etc. These are super handy for Chrome\u0027s\nabout:tracing feature (Chrome + system + kernel trace view), but\ncan be very distracting when you\u0027re trying to debug a kernel issue.\n\nI normally, use \"grep -v tracing_mark_write\" but it would be nice\nif I could just temporarily disable markers all together.\n\nLink: http://lkml.kernel.org/r/1347066739-26285-1-git-send-email-msb@chromium.org\n\nCC: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\nSigned-off-by: Mandeep Singh Baines \u003cmsb@chromium.org\u003e\nSigned-off-by: Steven Rostedt \u003crostedt@goodmis.org\u003e\n" }, { "commit": "d20b92ab668cc44fc84bba0001839c5a8013a5cd", "tree": "6a9f99ed0aa7563fcc990f9ec36ae2704672a961", "parents": [ "f8f3d4de2d04e1a5b4293b67faee8ebabc64e9fa" ], "author": { "name": "Eric W. Biederman", "email": "ebiederm@xmission.com", "time": "Tue Mar 13 16:02:19 2012 -0700" }, "committer": { "name": "Eric W. Biederman", "email": "ebiederm@xmission.com", "time": "Tue Sep 18 01:01:34 2012 -0700" }, "message": "userns: Teach trace to use from_kuid\n\n- When tracing capture the kuid.\n- When displaying the data to user space convert the kuid into the\n user namespace of the process that opened the report file.\n\nCc: Steven Rostedt \u003crostedt@goodmis.org\u003e\nCc: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\nCc: Ingo Molnar \u003cmingo@redhat.com\u003e\nSigned-off-by: Eric W. Biederman \u003cebiederm@xmission.com\u003e\n" }, { "commit": "a0e0fac633bed47c15cab744663d8c67f8f3421d", "tree": "585f685aacda161cb00bb0c8599e4f60b3c262c6", "parents": [ "bcada3d4b8c96b8792c2306f363992ca5ab9da42", "87abb3b15c62033409f5bf2ffb5620c94f91cf2c" ], "author": { "name": "Ingo Molnar", "email": "mingo@kernel.org", "time": "Tue Aug 21 11:36:39 2012 +0200" }, "committer": { "name": "Ingo Molnar", "email": "mingo@kernel.org", "time": "Tue Aug 21 11:36:49 2012 +0200" }, "message": "Merge branch \u0027tip/perf/core-2\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace into perf/core\n\nPull ftrace fixlets from Steve Rostedt.\n\nSigned-off-by: Ingo Molnar \u003cmingo@kernel.org\u003e\n" }, { "commit": "87abb3b15c62033409f5bf2ffb5620c94f91cf2c", "tree": "d011c42abd5d4ff849e37951b63dafff905935b0", "parents": [ "92d8d4a8b0f4c6eba70f6e62b48e38bd005a56e6" ], "author": { "name": "Wang Tianhong", "email": "wangthbj@linux.vnet.ibm.com", "time": "Thu Aug 02 14:02:00 2012 +0800" }, "committer": { "name": "Steven Rostedt", "email": "rostedt@goodmis.org", "time": "Tue Aug 07 09:43:32 2012 -0400" }, "message": "tracing/trivial: Fix some typos in kernel/trace\n\nFix some typos in kernel/trace.\n\nLink: http://lkml.kernel.org/r/1343887320.2228.9.camel@louis-ThinkPad-T410\n\nSigned-off-by: Wang Tianhong \u003cwangthbj@linux.vnet.ibm.com\u003e\nSigned-off-by: Steven Rostedt \u003crostedt@goodmis.org\u003e\n" }, { "commit": "b13bc8dda81c54a66a1c84e66f60b8feba659f28", "tree": "100a26eada424fa5d9b0e5eaaf4e23b8fa036fc8", "parents": [ "9fc377799bc9bfd8d5cb35d0d1ea2e2458cbdbb3", "419e9266884fa853179ab726c27a63a9d3ae46e3" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Jul 26 11:14:49 2012 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Jul 26 11:14:49 2012 -0700" }, "message": "Merge tag \u0027staging-3.6-rc1\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging\n\nPull staging tree patches from Greg Kroah-Hartman:\n \"Here\u0027s the big staging tree merge for the 3.6-rc1 merge window.\n\n There are some patches in here outside of drivers/staging/, notibly\n the iio code (which is still stradeling the staging / not staging\n boundry), the pstore code, and the tracing code. All of these have\n gotten acks from the various subsystem maintainers to be included in\n this tree. The pstore and tracing patches are related, and are coming\n here as they replace one of the android staging drivers.\n\n Otherwise, the normal staging mess. Lots of cleanups and a few new\n drivers (some iio drivers, and the large csr wireless driver\n abomination.)\n\n Signed-off-by: Greg Kroah-Hartman \u003cgregkh@linuxfoundation.org\u003e\"\n\nFixed up trivial conflicts in drivers/staging/comedi/drivers/s626.h and\ndrivers/staging/gdm72xx/netlink_k.c\n\n* tag \u0027staging-3.6-rc1\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging: (1108 commits)\n staging: csr: delete a bunch of unused library functions\n staging: csr: remove csr_utf16.c\n staging: csr: remove csr_pmem.h\n staging: csr: remove CsrPmemAlloc\n staging: csr: remove CsrPmemFree()\n staging: csr: remove CsrMemAllocDma()\n staging: csr: remove CsrMemCalloc()\n staging: csr: remove CsrMemAlloc()\n staging: csr: remove CsrMemFree() and CsrMemFreeDma()\n staging: csr: remove csr_util.h\n staging: csr: remove CsrOffSetOf()\n stating: csr: remove unneeded #includes in csr_util.c\n staging: csr: make CsrUInt16ToHex static\n staging: csr: remove CsrMemCpy()\n staging: csr: remove CsrStrLen()\n staging: csr: remove CsrVsnprintf()\n staging: csr: remove CsrStrDup\n staging: csr: remove CsrStrChr()\n staging: csr: remove CsrStrNCmp\n staging: csr: remove CsrStrCmp\n ...\n" }, { "commit": "b2ad368bebc0f772613668e893fa176396e9094c", "tree": "f2c14b8eea287afdab9eb5eba59792e1048b212a", "parents": [ "c1743cbc8d20d208bb1d2b10598204f2d89b144c" ], "author": { "name": "Anton Vorontsov", "email": "anton.vorontsov@linaro.org", "time": "Mon Jul 09 17:10:39 2012 -0700" }, "committer": { "name": "Greg Kroah-Hartman", "email": "gregkh@linuxfoundation.org", "time": "Tue Jul 17 09:50:53 2012 -0700" }, "message": "tracing: Fix initialization failure path in tracing_set_tracer()\n\nIf tracer-\u003einit() fails, current code will leave current_tracer pointing\nto an unusable tracer, which at best makes \u0027current_tracer\u0027 report\ninaccurate value.\n\nFix the issue by pointing current_tracer to nop tracer, and only update\ncurrent_tracer with the new one after all the initialization succeeds.\n\nSigned-off-by: Anton Vorontsov \u003canton.vorontsov@linaro.org\u003e\nAcked-by: Steven Rostedt \u003crostedt@goodmis.org\u003e\nSigned-off-by: Greg Kroah-Hartman \u003cgregkh@linuxfoundation.org\u003e\n" }, { "commit": "93574fcc5b50cc7b8834698acb2ce947e5b6a5dc", "tree": "f40191d94dfc121737e1acb3463874f8dc702ba7", "parents": [ "c3b7cdf180090d2686239a75bb0ae408108ed749" ], "author": { "name": "Dan Carpenter", "email": "dan.carpenter@oracle.com", "time": "Wed Jul 11 09:35:08 2012 +0300" }, "committer": { "name": "Steven Rostedt", "email": "rostedt@goodmis.org", "time": "Wed Jul 11 19:56:26 2012 -0400" }, "message": "tracing: Check for allocation failure in __tracing_open()\n\nClean up and return -ENOMEM on if the kzalloc() fails.\n\nThis also prevents a potential crash, as the pointer that failed to\nallocate would be later used.\n\nLink: http://lkml.kernel.org/r/20120711063507.GF11812@elgon.mountain\n\nCc: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\nCc: Ingo Molnar \u003cmingo@redhat.com\u003e\nSigned-off-by: Dan Carpenter \u003cdan.carpenter@oracle.com\u003e\nSigned-off-by: Steven Rostedt \u003crostedt@goodmis.org\u003e\n" }, { "commit": "35c2f48c66d9c1b8d794c3936c3be22aa7c89adb", "tree": "de0233d45fec273920bce0bc8640465cbf439600", "parents": [ "47fbc518a4b5c9a949f7cab8b14a00d3549bf138", "a5fb833172eca69136e9ee1ada778e404086ab8a" ], "author": { "name": "Ingo Molnar", "email": "mingo@kernel.org", "time": "Fri Jul 06 11:12:17 2012 +0200" }, "committer": { "name": "Ingo Molnar", "email": "mingo@kernel.org", "time": "Fri Jul 06 11:12:17 2012 +0200" }, "message": "Merge branch \u0027tip/perf/core\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace into perf/core\n\nPull tracing updates from Steve Rostedt.\n\nSigned-off-by: Ingo Molnar \u003cmingo@kernel.org\u003e\n" }, { "commit": "a3da2c6913469ecb2224d891c45470b37b4d67f4", "tree": "cbedea8d0c8c101cfffccdbaf273e7adf92a4e46", "parents": [ "ff826b2b5b269ad440afa686ede879ccabfda387", "6d9359280753d2955f86d6411047516a9431eb51" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Jul 03 15:45:10 2012 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Jul 03 15:45:10 2012 -0700" }, "message": "Merge branch \u0027for-linus\u0027 of git://git.kernel.dk/linux-block\n\nPull block bits from Jens Axboe:\n \"As vacation is coming up, thought I\u0027d better get rid of my pending\n changes in my for-linus branch for this iteration. It contains:\n\n - Two patches for mtip32xx. Killing a non-compliant sysfs interface\n and moving it to debugfs, where it belongs.\n\n - A few patches from Asias. Two legit bug fixes, and one killing an\n interface that is no longer in use.\n\n - A patch from Jan, making the annoying partition ioctl warning a bit\n less annoying, by restricting it to !CAP_SYS_RAWIO only.\n\n - Three bug fixes for drbd from Lars Ellenberg.\n\n - A fix for an old regression for umem, it hasn\u0027t really worked since\n the plugging scheme was changed in 3.0.\n\n - A few fixes from Tejun.\n\n - A splice fix from Eric Dumazet, fixing an issue with pipe\n resizing.\"\n\n* \u0027for-linus\u0027 of git://git.kernel.dk/linux-block:\n scsi: Silence unnecessary warnings about ioctl to partition\n block: Drop dead function blk_abort_queue()\n block: Mitigate lock unbalance caused by lock switching\n block: Avoid missed wakeup in request waitqueue\n umem: fix up unplugging\n splice: fix racy pipe-\u003ebuffers uses\n drbd: fix null pointer dereference with on-congestion policy when diskless\n drbd: fix list corruption by failing but already aborted reads\n drbd: fix access of unallocated pages and kernel panic\n xen/blkfront: Add WARN to deal with misbehaving backends.\n blkcg: drop local variable @q from blkg_destroy()\n mtip32xx: Create debugfs entries for troubleshooting\n mtip32xx: Remove \u0027registers\u0027 and \u0027flags\u0027 from sysfs\n blkcg: fix blkg_alloc() failure path\n block: blkcg_policy_cfq shouldn\u0027t be used if !CONFIG_CFQ_GROUP_IOSCHED\n block: fix return value on cfq_init() failure\n mtip32xx: Remove version.h header file inclusion\n xen/blkback: Copy id field when doing BLKIF_DISCARD.\n" }, { "commit": "6d158a813efcd09661c23f16ddf7e2ff834cb20c", "tree": "c3937902e8ef5196638a9c31fd3b6280540a101d", "parents": [ "b102f1d0f1cd0bb5ec82e5aeb1e33502d6ad6710" ], "author": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Wed Jun 27 20:46:14 2012 -0400" }, "committer": { "name": "Steven Rostedt", "email": "rostedt@goodmis.org", "time": "Thu Jun 28 13:52:15 2012 -0400" }, "message": "tracing: Remove NR_CPUS array from trace_iterator\n\nReplace the NR_CPUS array of buffer_iter from the trace_iterator\nwith an allocated array. This will just create an array of\npossible CPUS instead of the max number specified.\n\nThe use of NR_CPUS in that array caused allocation failures for\nmachines that were tight on memory. This did not cause any failures\nto the system itself (no crashes), but caused unnecessary failures\nfor reading the trace files.\n\nAdded a helper function called \u0027trace_buffer_iter()\u0027 that returns\nthe buffer_iter item or NULL if it is not defined or the array was\nnot allocated. Some routines do not require the array\n(tracing_open_pipe() for one).\n\nReported-by: Dave Jones \u003cdavej@redhat.com\u003e\nSigned-off-by: Steven Rostedt \u003crostedt@goodmis.org\u003e\n" }, { "commit": "0be61ebc18b919dddbdbcd1c4f42513c310ecf59", "tree": "60a26df229aa1187f1c75871431ef9a92c255a75", "parents": [ "357398e96d8c883b010379a7669df43ed0e2e32b" ], "author": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Mon Jun 18 09:28:16 2012 -0400" }, "committer": { "name": "Steven Rostedt", "email": "rostedt@goodmis.org", "time": "Thu Jun 28 13:52:14 2012 -0400" }, "message": "tracing/selftest: Add a WARN_ON() if a tracer test fails\n\nAdd a WARN_ON() output on test failures so that they are easier to detect\nin automated tests. Although, the WARN_ON() will not print if the test\ncauses the system to crash, obviously.\n\nSigned-off-by: Steven Rostedt \u003crostedt@goodmis.org\u003e\n" }, { "commit": "047fe3605235888f3ebcda0c728cb31937eadfe6", "tree": "9c33ef4b076bd54f686afe924cee01e21c55f427", "parents": [ "27e1f9d1cc87be4e53c6eb7158cafc21c4b85a14" ], "author": { "name": "Eric Dumazet", "email": "edumazet@google.com", "time": "Tue Jun 12 15:24:40 2012 +0200" }, "committer": { "name": "Jens Axboe", "email": "axboe@kernel.dk", "time": "Wed Jun 13 21:16:42 2012 +0200" }, "message": "splice: fix racy pipe-\u003ebuffers uses\n\nDave Jones reported a kernel BUG at mm/slub.c:3474! triggered\nby splice_shrink_spd() called from vmsplice_to_pipe()\n\ncommit 35f3d14dbbc5 (pipe: add support for shrinking and growing pipes)\nadded capability to adjust pipe-\u003ebuffers.\n\nProblem is some paths don\u0027t hold pipe mutex and assume pipe-\u003ebuffers\ndoesn\u0027t change for their duration.\n\nFix this by adding nr_pages_max field in struct splice_pipe_desc, and\nuse it in place of pipe-\u003ebuffers where appropriate.\n\nsplice_shrink_spd() loses its struct pipe_inode_info argument.\n\nReported-by: Dave Jones \u003cdavej@redhat.com\u003e\nSigned-off-by: Eric Dumazet \u003cedumazet@google.com\u003e\nCc: Jens Axboe \u003caxboe@kernel.dk\u003e\nCc: Alexander Viro \u003cviro@zeniv.linux.org.uk\u003e\nCc: Tom Herbert \u003ctherbert@google.com\u003e\nCc: stable \u003cstable@vger.kernel.org\u003e # 2.6.35\nTested-by: Dave Jones \u003cdavej@redhat.com\u003e\nSigned-off-by: Jens Axboe \u003caxboe@kernel.dk\u003e\n" }, { "commit": "f2bf1f6f5f89d031245067512449fc889b2f4bb2", "tree": "3211ae100915962ccdc4ea7a4b521ddfe2697cad", "parents": [ "5041caa4d5e6dae418963de0c8f8a83f35e35dcf" ], "author": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Wed Jun 06 19:50:40 2012 -0400" }, "committer": { "name": "Steven Rostedt", "email": "rostedt@goodmis.org", "time": "Wed Jun 06 22:15:14 2012 -0400" }, "message": "tracing: Have tracing_off() actually turn tracing off\n\nA recent update to have tracing_on/off() only affect the ftrace ring\nbuffers instead of all ring buffers had a cut and paste error.\nThe tracing_off() did the exact same thing as tracing_on() and\nwould not actually turn off tracing. Unfortunately, tracing_off()\nis more important to be working than tracing_on() as this is a key\ndevelopment tool, as it lets the developer turn off tracing as soon\nas a problem is discovered. It is also used by panic and oops code.\n\nThis bug also breaks the \u0027echo func:traceoff \u003e set_ftrace_filter\u0027\n\nCc: \u003cstable@vger.kernel.org\u003e # 3.4\nSigned-off-by: Steven Rostedt \u003crostedt@goodmis.org\u003e\n" }, { "commit": "6f5e3577d47aeb4ef39683cbf9e201554bc7054d", "tree": "62450b0532cbf68a749d34bf45c2ad145fccbdb2", "parents": [ "bb27f55eb9405257a59c82550dbb0d684cc3a665", "895b67fd5830ce18a6f1375a7c062fcf84b4b874" ], "author": { "name": "Ingo Molnar", "email": "mingo@kernel.org", "time": "Mon May 21 09:44:36 2012 +0200" }, "committer": { "name": "Ingo Molnar", "email": "mingo@kernel.org", "time": "Mon May 21 09:44:36 2012 +0200" }, "message": "Merge branch \u0027tip/perf/core-2\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace into perf/core\n" }, { "commit": "bb27f55eb9405257a59c82550dbb0d684cc3a665", "tree": "bdab5866709e6ac7eeef7493d7d73bbd3d6231b6", "parents": [ "b732d439cb43336cd6d7e804ecb2c81193ef63b0", "5e1c81d98a5621007824b49dde556fead5ff9c6c" ], "author": { "name": "Ingo Molnar", "email": "mingo@kernel.org", "time": "Mon May 21 09:17:31 2012 +0200" }, "committer": { "name": "Ingo Molnar", "email": "mingo@kernel.org", "time": "Mon May 21 09:17:50 2012 +0200" }, "message": "Merge branch \u0027perf/core\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/core\n\nFixes for perf/core:\n\n - Rename some perf_target methods to avoid double negation, from Namhyung Kim.\n - Revert change to use per task events with inheritance, from Namhyung Kim.\n - Events should start disabled till children starts running, from David Ahern.\n\nSigned-off-by: Arnaldo Carvalho de Melo \u003cacme@redhat.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@kernel.org\u003e\n" }, { "commit": "895b67fd5830ce18a6f1375a7c062fcf84b4b874", "tree": "38f7d09da0f08b469c72ff3007d027212d400b9e", "parents": [ "a591c73f127505cdbd0aa399a92112a8ddff8730" ], "author": { "name": "Richard Weinberger", "email": "richard@nod.at", "time": "Mon Nov 07 09:23:22 2011 +0100" }, "committer": { "name": "Steven Rostedt", "email": "rostedt@goodmis.org", "time": "Sat May 19 08:28:51 2012 -0400" }, "message": "tracing: Remove kernel_lock annotations\n\nThe BKL is gone, these annotations are useless.\n\nLink: http://lkml.kernel.org/r/1320654202-4433-1-git-send-email-richard@nod.at\n\nSigned-off-by: Richard Weinberger \u003crichard@nod.at\u003e\nSigned-off-by: Steven Rostedt \u003crostedt@goodmis.org\u003e\n" }, { "commit": "a591c73f127505cdbd0aa399a92112a8ddff8730", "tree": "47eeb200977b79ddfbe3a6a26e8e38dc93bb5ff5", "parents": [ "05fdd70d2fe1e34d8b80ec56d6e3272d9293653e" ], "author": { "name": "Vaibhav Nagarnaik", "email": "vnagarnaik@google.com", "time": "Thu May 03 10:40:34 2012 -0700" }, "committer": { "name": "Steven Rostedt", "email": "rostedt@goodmis.org", "time": "Sat May 19 08:28:50 2012 -0400" }, "message": "tracing: Fix initial buffer_size_kb state\n\nMake sure that the state of buffer_size_kb is initialized correctly and\nreturns actual size of the ring buffer.\n\nLink: http://lkml.kernel.org/r/1336066834-1673-1-git-send-email-vnagarnaik@google.com\n\nCc: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\nCc: Ingo Molnar \u003cmingo@redhat.com\u003e\nCc: Laurent Chavey \u003cchavey@google.com\u003e\nCc: Justin Teravest \u003cteravest@google.com\u003e\nCc: David Sharp \u003cdhsharp@google.com\u003e\nSigned-off-by: Vaibhav Nagarnaik \u003cvnagarnaik@google.com\u003e\nSigned-off-by: Steven Rostedt \u003crostedt@goodmis.org\u003e\n" }, { "commit": "16ee6576e25b83806d26eb771138249fcfb5eddc", "tree": "7c717b80f28b5c59ba673dc00f2ca9bd0fc068d4", "parents": [ "16fa7e8200fb9066b77a3f27cbed8e4a9fc71998", "9b63776fa3ca96c4ecda76f6fa947b7b0add66ac" ], "author": { "name": "Arnaldo Carvalho de Melo", "email": "acme@redhat.com", "time": "Fri May 18 13:13:33 2012 -0300" }, "committer": { "name": "Arnaldo Carvalho de Melo", "email": "acme@redhat.com", "time": "Fri May 18 13:13:33 2012 -0300" }, "message": "Merge remote-tracking branch \u0027tip/perf/urgent\u0027 into perf/core\n\nMerge reason: We are going to queue up a dependent patch:\n\n\"perf tools: Move parse event automated tests to separated object\"\n\nThat depends on:\n\ncommit e7c72d8\nperf tools: Add \u0027G\u0027 and \u0027H\u0027 modifiers to event parsing\n\nConflicts:\n\ttools/perf/builtin-stat.c\n\nConflicted with the recent \u0027perf_target\u0027 patches when checking the\nresult of perf_evsel open routines to see if a retry is needed to cope\nwith older kernels where the exclude guest/host perf_event_attr bits\nwere not used.\n\nSigned-off-by: Arnaldo Carvalho de Melo \u003cacme@redhat.com\u003e\n" }, { "commit": "71babb2705e2203a64c27ede13ae3508a0d2c16c", "tree": "8274eb4b1b17872e38715e0f619669fcc2b06c8d", "parents": [ "0a3d7ce7e6caa8c39cb5184bd9047a01a40abc2a" ], "author": { "name": "Vaibhav Nagarnaik", "email": "vnagarnaik@google.com", "time": "Thu May 03 18:59:52 2012 -0700" }, "committer": { "name": "Steven Rostedt", "email": "rostedt@goodmis.org", "time": "Wed May 16 19:50:38 2012 -0400" }, "message": "tracing: change CPU ring buffer state from tracing_cpumask\n\nAccording to Documentation/trace/ftrace.txt:\n\ntracing_cpumask:\n\n This is a mask that lets the user only trace\n on specified CPUS. The format is a hex string\n representing the CPUS.\n\nThe tracing_cpumask currently doesn\u0027t affect the tracing state of\nper-CPU ring buffers.\n\nThis patch enables/disables CPU recording as its corresponding bit in\ntracing_cpumask is set/unset.\n\nLink: http://lkml.kernel.org/r/1336096792-25373-3-git-send-email-vnagarnaik@google.com\n\nCc: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\nCc: Ingo Molnar \u003cmingo@redhat.com\u003e\nCc: Laurent Chavey \u003cchavey@google.com\u003e\nCc: Justin Teravest \u003cteravest@google.com\u003e\nCc: David Sharp \u003cdhsharp@google.com\u003e\nSigned-off-by: Vaibhav Nagarnaik \u003cvnagarnaik@google.com\u003e\nSigned-off-by: Steven Rostedt \u003crostedt@goodmis.org\u003e\n" }, { "commit": "0a3d7ce7e6caa8c39cb5184bd9047a01a40abc2a", "tree": "c273c4024b2e1f9b8d4701108e05770e8d4515a9", "parents": [ "308f7eeb7882c27c1d7aa783499cb22f3b199718" ], "author": { "name": "Namhyung Kim", "email": "namhyung.kim@lge.com", "time": "Mon Apr 23 10:11:57 2012 +0900" }, "committer": { "name": "Steven Rostedt", "email": "rostedt@goodmis.org", "time": "Wed May 16 19:50:37 2012 -0400" }, "message": "tracing: Check return value of tracing_dentry_percpu()\n\nIf tracing_dentry_percpu() failed, tracing_init_debugfs_percpu()\nwill try to create each cpu directories on debugfs\u0027 root directory\nas d_percpu is NULL.\n\nLink: http://lkml.kernel.org/r/1335143517-2285-1-git-send-email-namhyung.kim@lge.com\n\nCc: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\nCc: Ingo Molnar \u003cmingo@redhat.com\u003e\nSigned-off-by: Namhyung Kim \u003cnamhyung.kim@lge.com\u003e\nSigned-off-by: Steven Rostedt \u003crostedt@goodmis.org\u003e\n" }, { "commit": "83f40318dab00e3298a1f6d0b12ac025e84e478d", "tree": "efa4aa0d79337ec7e56d667d513ae69f1b2e38f7", "parents": [ "6edb2a8a385f0cdef51dae37ff23e74d76d8a6ce" ], "author": { "name": "Vaibhav Nagarnaik", "email": "vnagarnaik@google.com", "time": "Thu May 03 18:59:50 2012 -0700" }, "committer": { "name": "Steven Rostedt", "email": "rostedt@goodmis.org", "time": "Wed May 16 16:18:57 2012 -0400" }, "message": "ring-buffer: Make removal of ring buffer pages atomic\n\nThis patch adds the capability to remove pages from a ring buffer\nwithout destroying any existing data in it.\n\nThis is done by removing the pages after the tail page. This makes sure\nthat first all the empty pages in the ring buffer are removed. If the\nhead page is one in the list of pages to be removed, then the page after\nthe removed ones is made the head page. This removes the oldest data\nfrom the ring buffer and keeps the latest data around to be read.\n\nTo do this in a non-racey manner, tracing is stopped for a very short\ntime while the pages to be removed are identified and unlinked from the\nring buffer. The pages are freed after the tracing is restarted to\nminimize the time needed to stop tracing.\n\nThe context in which the pages from the per-cpu ring buffer are removed\nruns on the respective CPU. This minimizes the events not traced to only\nNMI trace contexts.\n\nLink: http://lkml.kernel.org/r/1336096792-25373-1-git-send-email-vnagarnaik@google.com\n\nCc: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\nCc: Ingo Molnar \u003cmingo@redhat.com\u003e\nCc: Laurent Chavey \u003cchavey@google.com\u003e\nCc: Justin Teravest \u003cteravest@google.com\u003e\nCc: David Sharp \u003cdhsharp@google.com\u003e\nSigned-off-by: Vaibhav Nagarnaik \u003cvnagarnaik@google.com\u003e\nSigned-off-by: Steven Rostedt \u003crostedt@goodmis.org\u003e\n" }, { "commit": "6edb2a8a385f0cdef51dae37ff23e74d76d8a6ce", "tree": "80a8bf8b301984907bd8773ca31748e82e136638", "parents": [ "978da300c7a65494692b329a6a4cbf364afc37c5" ], "author": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Fri May 11 23:28:49 2012 -0400" }, "committer": { "name": "Steven Rostedt", "email": "rostedt@goodmis.org", "time": "Wed May 16 16:18:57 2012 -0400" }, "message": "tracing: Clean up tracing_mark_write()\n\nOn gcc 4.5 the function tracing_mark_write() would give a warning\nof page2 being uninitialized. This is due to a bug in gcc because\nthe logic prevents page2 from being used uninitialized, and\ngcc 4.6+ does not complain (correctly).\n\nInstead of adding a \"unitialized\" around page2, which could show\na bug later on, I combined page1 and page2 into an array map_pages[].\nThis binds the two and the two are modified according to nr_pages\n(what gcc 4.5 seems to ignore). This no longer gives a warning with\ngcc 4.5 nor with gcc 4.6.\n\nSigned-off-by: Steven Rostedt \u003crostedt@goodmis.org\u003e\n" }, { "commit": "68179686ac67cb08f08b1ef28b860d5ed899f242", "tree": "5358088eddef07e00a6daf309c0fe43f94a6cdc4", "parents": [ "50e18b94c695644d824381e7574b9c44acc25ffe" ], "author": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Tue May 08 20:57:53 2012 -0400" }, "committer": { "name": "Steven Rostedt", "email": "rostedt@goodmis.org", "time": "Tue May 08 21:06:26 2012 -0400" }, "message": "tracing: Remove ftrace_disable/enable_cpu()\n\nThe ftrace_disable_cpu() and ftrace_enable_cpu() functions were\nneeded back before the ring buffer was lockless. Now that the\nring buffer is lockless (and has been for some time), these functions\nserve no purpose, and unnecessarily slow down operations of the tracer.\n\nSigned-off-by: Steven Rostedt \u003crostedt@goodmis.org\u003e\n" }, { "commit": "50e18b94c695644d824381e7574b9c44acc25ffe", "tree": "8e323cd188dfdf4882e963812a6b9caf8905cac0", "parents": [ "b02ee9a33b65bcc4ad13c12a0b04afdaab3ddd8d" ], "author": { "name": "Jiri Olsa", "email": "jolsa@redhat.com", "time": "Wed Apr 25 10:23:39 2012 +0200" }, "committer": { "name": "Steven Rostedt", "email": "rostedt@goodmis.org", "time": "Tue May 08 21:04:12 2012 -0400" }, "message": "tracing: Use seq_*_private interface for some seq files\n\nIt\u0027s appropriate to use __seq_open_private interface to open\nsome of trace seq files, because it covers all steps we are\nduplicating in tracing code - zallocating the iterator and\nsetting it as seq_file\u0027s private.\n\nUsing this for following files:\n trace\n available_filter_functions\n enabled_functions\n\nLink: http://lkml.kernel.org/r/1335342219-2782-5-git-send-email-jolsa@redhat.com\n\nSigned-off-by: Jiri Olsa \u003cjolsa@redhat.com\u003e\n\n[\n Fixed warnings for:\n kernel/trace/trace.c: In function \u0027__tracing_open\u0027:\n kernel/trace/trace.c:2418:11: warning: unused variable \u0027ret\u0027 [-Wunused-variable]\n kernel/trace/trace.c:2417:19: warning: unused variable \u0027m\u0027 [-Wunused-variable]\n]\n\nSigned-off-by: Steven Rostedt \u003crostedt@goodmis.org\u003e\n" }, { "commit": "438ced1720b584000a9e8a4349d1f6bb7ee3ad6d", "tree": "2c769e58411c68b298ab816c577ecb2119c7067c", "parents": [ "5a26c8f0cf1e95106858bb4e23ca6dd14c9b842f" ], "author": { "name": "Vaibhav Nagarnaik", "email": "vnagarnaik@google.com", "time": "Thu Feb 02 12:00:41 2012 -0800" }, "committer": { "name": "Steven Rostedt", "email": "rostedt@goodmis.org", "time": "Mon Apr 23 21:17:51 2012 -0400" }, "message": "ring-buffer: Add per_cpu ring buffer control files\n\nAdd a debugfs entry under per_cpu/ folder for each cpu called\nbuffer_size_kb to control the ring buffer size for each CPU\nindependently.\n\nIf the global file buffer_size_kb is used to set size, the individual\nring buffers will be adjusted to the given size. The buffer_size_kb will\nreport the common size to maintain backward compatibility.\n\nIf the buffer_size_kb file under the per_cpu/ directory is used to\nchange buffer size for a specific CPU, only the size of the respective\nring buffer is updated. When tracing/buffer_size_kb is read, it reports\n\u0027X\u0027 to indicate that sizes of per_cpu ring buffers are not equivalent.\n\nLink: http://lkml.kernel.org/r/1328212844-11889-1-git-send-email-vnagarnaik@google.com\n\nCc: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\nCc: Michael Rubin \u003cmrubin@google.com\u003e\nCc: David Sharp \u003cdhsharp@google.com\u003e\nCc: Justin Teravest \u003cteravest@google.com\u003e\nSigned-off-by: Vaibhav Nagarnaik \u003cvnagarnaik@google.com\u003e\nSigned-off-by: Steven Rostedt \u003crostedt@goodmis.org\u003e\n" }, { "commit": "5a26c8f0cf1e95106858bb4e23ca6dd14c9b842f", "tree": "0e4d5a45f2ce667f3560a9171e11178437ca24a5", "parents": [ "07d777fe8c3985bc83428c2866713c2d1b3d4129" ], "author": { "name": "Dan Carpenter", "email": "dan.carpenter@oracle.com", "time": "Fri Apr 20 09:31:45 2012 +0300" }, "committer": { "name": "Steven Rostedt", "email": "rostedt@goodmis.org", "time": "Mon Apr 23 21:16:10 2012 -0400" }, "message": "tracing: Remove an unneeded check in trace_seq_buffer()\n\nmemcpy() returns a pointer to \"bug\". Hopefully, it\u0027s not NULL here or\nwe would already have Oopsed.\n\nLink: http://lkml.kernel.org/r/20120420063145.GA22649@elgon.mountain\n\nCc: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\nCc: Eduard - Gabriel Munteanu \u003ceduard.munteanu@linux360.ro\u003e\nSigned-off-by: Dan Carpenter \u003cdan.carpenter@oracle.com\u003e\nSigned-off-by: Steven Rostedt \u003crostedt@goodmis.org\u003e\n" }, { "commit": "07d777fe8c3985bc83428c2866713c2d1b3d4129", "tree": "f14c6aa59b9719761ad9feebebca22550ebdf0e3", "parents": [ "a385ec4f11bdcf81af094c03e2444ee9b7fad2e5" ], "author": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Thu Sep 22 14:01:55 2011 -0400" }, "committer": { "name": "Steven Rostedt", "email": "rostedt@goodmis.org", "time": "Mon Apr 23 21:15:55 2012 -0400" }, "message": "tracing: Add percpu buffers for trace_printk()\n\nCurrently, trace_printk() uses a single buffer to write into\nto calculate the size and format needed to save the trace. To\ndo this safely in an SMP environment, a spin_lock() is taken\nto only allow one writer at a time to the buffer. But this could\nalso affect what is being traced, and add synchronization that\nwould not be there otherwise.\n\nIdeally, using percpu buffers would be useful, but since trace_printk()\nis only used in development, having per cpu buffers for something\nnever used is a waste of space. Thus, the use of the trace_bprintk()\nformat section is changed to be used for static fmts as well as dynamic ones.\nThen at boot up, we can check if the section that holds the trace_printk\nformats is non-empty, and if it does contain something, then we\nknow a trace_printk() has been added to the kernel. At this time\nthe trace_printk per cpu buffers are allocated. A check is also\ndone at module load time in case a module is added that contains a\ntrace_printk().\n\nOnce the buffers are allocated, they are never freed. If you use\na trace_printk() then you should know what you are doing.\n\nA buffer is made for each type of context:\n\n normal\n softirq\n irq\n nmi\n\nThe context is checked and the appropriate buffer is used.\nThis allows for totally lockless usage of trace_printk(),\nand they no longer even disable interrupts.\n\nRequested-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nSigned-off-by: Steven Rostedt \u003crostedt@goodmis.org\u003e\n" }, { "commit": "348f0fc238efb441a28e7644c51f9fd3001b228a", "tree": "780fa93c72777045a986f0ce648efc2bf8e35999", "parents": [ "6e48b550d1f5f1919e6500547ae14a73fbf66c7b" ], "author": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Mon Apr 16 15:41:28 2012 -0400" }, "committer": { "name": "Steven Rostedt", "email": "rostedt@goodmis.org", "time": "Mon Apr 16 15:41:28 2012 -0400" }, "message": "tracing: Fix regression with tracing_on\n\nThe change to make tracing_on affect only the ftrace ring buffer, caused\na bug where it wont affect any ring buffer. The problem was that the buffer\nof the trace_array was passed to the write function and not the trace array\nitself.\n\nThe trace_array can change the buffer when running a latency tracer. If this\nhappens, then the buffer being disabled may not be the buffer currently used\nby ftrace. This will cause the tracing_on file to become useless.\n\nThe simple fix is to pass the trace_array to the write function instead of\nthe buffer. Then the actual buffer may be changed.\n\nSigned-off-by: Steven Rostedt \u003crostedt@goodmis.org\u003e\n" }, { "commit": "12b5da349a8b94c9dbc3430a6bc42eabd9eaf50b", "tree": "a785d2b0757cacc15cd02e9eb6da3210c79a8aea", "parents": [ "2c86bf172e550b4bf089ac7f0de3f6370e243842" ], "author": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Tue Mar 27 10:43:28 2012 -0400" }, "committer": { "name": "Steven Rostedt", "email": "rostedt@goodmis.org", "time": "Tue Mar 27 12:05:44 2012 -0400" }, "message": "tracing: Fix ent_size in trace output\n\nWhen reading the trace file, the records of each of the per_cpu buffers\nare examined to find the next event to print out. At the point of looking\nat the event, the size of the event is recorded. But if the first event is\nchosen, the other events in the other CPU buffers will reset the event size\nthat is stored in the iterator descriptor, causing the event size passed to\nthe output functions to be incorrect.\n\nIn most cases this is not a problem, but for the case of stack traces, it\nis. With the change to the stack tracing to record a dynamic number of\nback traces, the output depends on the size of the entry instead of the\nfixed 8 back traces. When the entry size is not correct, the back traces\nwould not be fully printed.\n\nNote, reading from the per-cpu trace files were not affected.\n\nReported-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\nTested-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\nCc: stable@vger.kernel.org\nSigned-off-by: Steven Rostedt \u003crostedt@goodmis.org\u003e\n" }, { "commit": "b892e5c89787716b95a8e55d77d25a1c0748df10", "tree": "ed77ec8ab4db28fb900653cee4b719cf02a3a911", "parents": [ "8c9cf542b8a66c231747a550573d910daf17f0e9" ], "author": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Thu Mar 01 22:06:48 2012 -0500" }, "committer": { "name": "Steven Rostedt", "email": "rostedt@goodmis.org", "time": "Thu Mar 01 22:06:48 2012 -0500" }, "message": "tracing: Keep NMI watchdog from triggering when dumping trace\n\nAs ftrace_dump() (called by ftrace_dump_on_oops) disables interrupts\nas it dumps its output to the console, it can keep interrupts disabled\nfor long periods of time. This is likely to trigger the NMI watchdog,\nand it can disrupt the output of critical data.\n\nAdd a touch_nmi_watchdog() to each event that is written to the screen\nto keep the NMI watchdog from affecting the output.\n\nSigned-off-by: Steven Rostedt \u003crostedt@goodmis.org\u003e\n" }, { "commit": "499e547057f5bba5cd6f87ebe59b05d0c59da905", "tree": "9bc64c1a76446153b72a66ad25fe892012d9d120", "parents": [ "5500fa51199aee770ce53718853732600543619e" ], "author": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Wed Feb 22 15:50:28 2012 -0500" }, "committer": { "name": "Steven Rostedt", "email": "rostedt@goodmis.org", "time": "Wed Feb 22 15:50:28 2012 -0500" }, "message": "tracing/ring-buffer: Only have tracing_on disable tracing buffers\n\nAs the ring-buffer code is being used by other facilities in the\nkernel, having tracing_on file disable *all* buffers is not a desired\naffect. It should only disable the ftrace buffers that are being used.\n\nMove the code into the trace.c file and use the buffer disabling\nfor tracing_on() and tracing_off(). This way only the ftrace buffers\nwill be affected by them and other kernel utilities will not be\nconfused to why their output suddenly stopped.\n\nSigned-off-by: Steven Rostedt \u003crostedt@goodmis.org\u003e\n" }, { "commit": "1e42e83fde5537266c1d1e7fd8c010b3028d50fc", "tree": "6ca9af6a41021c2b1fb423bf85b1b99aa79e2e81", "parents": [ "76027ea863fc02698da536b4970784eed3caa635" ], "author": { "name": "Geunsik Lim", "email": "geunsik.lim@samsung.com", "time": "Wed Feb 08 19:05:36 2012 +0900" }, "committer": { "name": "Steven Rostedt", "email": "rostedt@goodmis.org", "time": "Mon Feb 13 09:14:47 2012 -0500" }, "message": "ftrace: sched_switch plugin is deprecated\n\nActually, sched_switch function tracer is merged into wakeup/wakeup_rt\nUpdate \u0027mini-HOWTO\u0027 for ftrace(Kernel function tracer).\nIf we want to trace \"sched:sched_switch\" to trace sched_switch func,\nWe may utilize event option.(e.g: trace-cmd list -e | grep sched)\nThis patch is based on Linux-3.3.rc2-SMP-PREEMPT\n\nLink: http://lkml.kernel.org/r/1328695537-15081-1-git-send-email-geunsik.lim@gmail.com\n\nCc: Randy Dunlap \u003crdunlap@xenotime.net\u003e\nSigned-off-by: Geunsik Lim \u003cgeunsik.lim@samsung.com\u003e\nSigned-off-by: Steven Rostedt \u003crostedt@goodmis.org\u003e\n" }, { "commit": "972b2c719990f91eb3b2310d44ef8a2d38955a14", "tree": "b25a250ec5bec4b7b6355d214642d8b57c5cab32", "parents": [ "02550d61f49266930e674286379d3601006b2893", "c3aa077648e147783a7a53b409578234647db853" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Sun Jan 08 12:19:57 2012 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Sun Jan 08 12:19:57 2012 -0800" }, "message": "Merge branch \u0027for-linus2\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs\n\n* \u0027for-linus2\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: (165 commits)\n reiserfs: Properly display mount options in /proc/mounts\n vfs: prevent remount read-only if pending removes\n vfs: count unlinked inodes\n vfs: protect remounting superblock read-only\n vfs: keep list of mounts for each superblock\n vfs: switch -\u003eshow_options() to struct dentry *\n vfs: switch -\u003eshow_path() to struct dentry *\n vfs: switch -\u003eshow_devname() to struct dentry *\n vfs: switch -\u003eshow_stats to struct dentry *\n switch security_path_chmod() to struct path *\n vfs: prefer -\u003edentry-\u003ed_sb to -\u003emnt-\u003emnt_sb\n vfs: trim includes a bit\n switch mnt_namespace -\u003eroot to struct mount\n vfs: take /proc/*/mounts and friends to fs/proc_namespace.c\n vfs: opencode mntget() mnt_set_mountpoint()\n vfs: spread struct mount - remaining argument of next_mnt()\n vfs: move fsnotify junk to struct mount\n vfs: move mnt_devname\n vfs: move mnt_list to struct mount\n vfs: switch pnode.h macros to struct mount *\n ...\n" }, { "commit": "35b740e4662ef386f0c60e1b60aaf5b44db9914c", "tree": "502a8f9499bc1b4cb3300d666dab2d01a1921224", "parents": [ "423d091dfe58d3109d84c408810a7cfa82f6f184", "9e183426bfb52bb44bf3c443d6587e4d02478603" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Fri Jan 06 08:02:58 2012 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Fri Jan 06 08:02:58 2012 -0800" }, "message": "Merge branch \u0027perf-core-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip\n\n* \u0027perf-core-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (106 commits)\n perf kvm: Fix copy \u0026 paste error in description\n perf script: Kill script_spec__delete\n perf top: Fix a memory leak\n perf stat: Introduce get_ratio_color() helper\n perf session: Remove impossible condition check\n perf tools: Fix feature-bits rework fallout, remove unused variable\n perf script: Add generic perl handler to process events\n perf tools: Use for_each_set_bit() to iterate over feature flags\n perf tools: Unify handling of features when writing feature section\n perf report: Accept fifos as input file\n perf tools: Moving code in some files\n perf tools: Fix out-of-bound access to struct perf_session\n perf tools: Continue processing header on unknown features\n perf tools: Improve macros for struct feature_ops\n perf: builtin-record: Document and check that mmap_pages must be a power of two.\n perf: builtin-record: Provide advice if mmap\u0027ing fails with EPERM.\n perf tools: Fix truncated annotation\n perf script: look up thread using tid instead of pid\n perf tools: Look up thread names for system wide profiling\n perf tools: Fix comm for processes with named threads\n ...\n" }, { "commit": "f4ae40a6a50a98ac23d4b285f739455e926a473e", "tree": "c84d7393700bd85e5285a194f8c22d4d00e36b28", "parents": [ "48176a973d65572e61d0ce95495e5072887e6fb6" ], "author": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Sun Jul 24 04:33:43 2011 -0400" }, "committer": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Tue Jan 03 22:54:56 2012 -0500" }, "message": "switch debugfs to umode_t\n\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n" }, { "commit": "a8eecf2248a45bf69f0625b23c003ad2ccd765ee", "tree": "170e96d6a6cf26da8751ec98f59c81adc28717e6", "parents": [ "9b2e4f1880b789be1f24f9684f7a54b90310b5c0" ], "author": { "name": "Paul E. McKenney", "email": "paul.mckenney@linaro.org", "time": "Sun Oct 02 11:01:15 2011 -0700" }, "committer": { "name": "Paul E. McKenney", "email": "paulmck@linux.vnet.ibm.com", "time": "Sun Dec 11 10:31:25 2011 -0800" }, "message": "trace: Allow ftrace_dump() to be called from modules\n\nAdd an EXPORT_SYMBOL_GPL() so that rcutorture can dump the trace buffer\nupon detection of an RCU error.\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": "39eaf7ef884dcc44f7ff1bac803ca2a1dcf43544", "tree": "323e858496ef9c587a3e9861dab863af5303f82f", "parents": [ "77271ce4b2c0df0a76ad1cbb6a95b07e1f88c1ea" ], "author": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Thu Nov 17 10:35:16 2011 -0500" }, "committer": { "name": "Steven Rostedt", "email": "rostedt@goodmis.org", "time": "Thu Nov 17 11:10:43 2011 -0500" }, "message": "tracing: Add entries in buffer and total entries to default output header\n\nKnowing the number of event entries in the ring buffer compared\nto the total number that were written is useful information. The\nlatency format gives this information and there\u0027s no reason that the\ndefault format does not.\n\nThis information is now added to the default header, along with the\nnumber of online CPUs:\n\n # tracer: nop\n #\n # entries-in-buffer/entries-written: 159836/64690869 #P:4\n #\n # _-----\u003d\u003e irqs-off\n # / _----\u003d\u003e need-resched\n # | / _---\u003d\u003e hardirq/softirq\n # || / _--\u003d\u003e preempt-depth\n # ||| / delay\n # TASK-PID CPU# |||| TIMESTAMP FUNCTION\n # | | | |||| | |\n \u003cidle\u003e-0 [000] ...2 49.442971: local_touch_nmi \u003c-cpu_idle\n \u003cidle\u003e-0 [000] d..2 49.442973: enter_idle \u003c-cpu_idle\n \u003cidle\u003e-0 [000] d..2 49.442974: atomic_notifier_call_chain \u003c-enter_idle\n \u003cidle\u003e-0 [000] d..2 49.442976: __atomic_notifier_call_chain \u003c-atomic_notifier\n\nThe above shows that the trace contains 159836 entries, but\n64690869 were written. One could figure out that there were\n64531033 entries that were dropped.\n\nSigned-off-by: Steven Rostedt \u003crostedt@goodmis.org\u003e\n" }, { "commit": "77271ce4b2c0df0a76ad1cbb6a95b07e1f88c1ea", "tree": "fd46cc3c3128bd230ee9dcbd610bc0ca8719a63c", "parents": [ "5d81e5cfb37a174e8ddc0413e2e70cdf05807ace" ], "author": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Thu Nov 17 09:34:33 2011 -0500" }, "committer": { "name": "Steven Rostedt", "email": "rostedt@goodmis.org", "time": "Thu Nov 17 09:58:48 2011 -0500" }, "message": "tracing: Add irq, preempt-count and need resched info to default trace output\n\nPeople keep asking how to get the preempt count, irq, and need resched info\nand we keep telling them to enable the latency format. Some developers think\nthat traces without this info is completely useless, and for a lot of tasks\nit is useless.\n\nThe first option was to enable the latency trace as the default format, but\nthe header for the latency format is pretty useless for most tracers and\nit also does the timestamp in straight microseconds from the time the trace\nstarted. This is sometimes more difficult to read as the default trace is\nseconds from the start of boot up.\n\nLatency format:\n\n # tracer: nop\n #\n # nop latency trace v1.1.5 on 3.2.0-rc1-test+\n # --------------------------------------------------------------------\n # latency: 0 us, #159771/64234230, CPU#1 | (M:preempt VP:0, KP:0, SP:0 HP:0 #P:4)\n # -----------------\n # | task: -0 (uid:0 nice:0 policy:0 rt_prio:0)\n # -----------------\n #\n # _------\u003d\u003e CPU#\n # / _-----\u003d\u003e irqs-off\n # | / _----\u003d\u003e need-resched\n # || / _---\u003d\u003e hardirq/softirq\n # ||| / _--\u003d\u003e preempt-depth\n # |||| / delay\n # cmd pid ||||| time | caller\n # \\ / ||||| \\ | /\n migratio-6 0...2 41778231us+: rcu_note_context_switch \u003c-__schedule\n migratio-6 0...2 41778233us : trace_rcu_utilization \u003c-rcu_note_context_switch\n migratio-6 0...2 41778235us+: rcu_sched_qs \u003c-rcu_note_context_switch\n migratio-6 0d..2 41778236us+: rcu_preempt_qs \u003c-rcu_note_context_switch\n migratio-6 0...2 41778238us : trace_rcu_utilization \u003c-rcu_note_context_switch\n migratio-6 0...2 41778239us+: debug_lockdep_rcu_enabled \u003c-__schedule\n\ndefault format:\n\n # tracer: nop\n #\n # TASK-PID CPU# TIMESTAMP FUNCTION\n # | | | | |\n migration/0-6 [000] 50.025810: rcu_note_context_switch \u003c-__schedule\n migration/0-6 [000] 50.025812: trace_rcu_utilization \u003c-rcu_note_context_switch\n migration/0-6 [000] 50.025813: rcu_sched_qs \u003c-rcu_note_context_switch\n migration/0-6 [000] 50.025815: rcu_preempt_qs \u003c-rcu_note_context_switch\n migration/0-6 [000] 50.025817: trace_rcu_utilization \u003c-rcu_note_context_switch\n migration/0-6 [000] 50.025818: debug_lockdep_rcu_enabled \u003c-__schedule\n migration/0-6 [000] 50.025820: debug_lockdep_rcu_enabled \u003c-__schedule\n\nThe latency format header has latency information that is pretty meaningless\nfor most tracers. Although some of the header is useful, and we can add that\nlater to the default format as well.\n\nWhat is really useful with the latency format is the irqs-off, need-resched\nhard/softirq context and the preempt count.\n\nThis commit adds the option irq-info which is on by default that adds this\ninformation:\n\n # tracer: nop\n #\n # _-----\u003d\u003e irqs-off\n # / _----\u003d\u003e need-resched\n # | / _---\u003d\u003e hardirq/softirq\n # || / _--\u003d\u003e preempt-depth\n # ||| / delay\n # TASK-PID CPU# |||| TIMESTAMP FUNCTION\n # | | | |||| | |\n \u003cidle\u003e-0 [000] d..2 49.309305: cpuidle_get_driver \u003c-cpuidle_idle_call\n \u003cidle\u003e-0 [000] d..2 49.309307: mwait_idle \u003c-cpu_idle\n \u003cidle\u003e-0 [000] d..2 49.309309: need_resched \u003c-mwait_idle\n \u003cidle\u003e-0 [000] d..2 49.309310: test_ti_thread_flag \u003c-need_resched\n \u003cidle\u003e-0 [000] d..2 49.309312: trace_power_start.constprop.13 \u003c-mwait_idle\n \u003cidle\u003e-0 [000] d..2 49.309313: trace_cpu_idle \u003c-mwait_idle\n \u003cidle\u003e-0 [000] d..2 49.309315: need_resched \u003c-mwait_idle\n\nIf a user wants the old format, they can disable the \u0027irq-info\u0027 option:\n\n # tracer: nop\n #\n # TASK-PID CPU# TIMESTAMP FUNCTION\n # | | | | |\n \u003cidle\u003e-0 [000] 49.309305: cpuidle_get_driver \u003c-cpuidle_idle_call\n \u003cidle\u003e-0 [000] 49.309307: mwait_idle \u003c-cpu_idle\n \u003cidle\u003e-0 [000] 49.309309: need_resched \u003c-mwait_idle\n \u003cidle\u003e-0 [000] 49.309310: test_ti_thread_flag \u003c-need_resched\n \u003cidle\u003e-0 [000] 49.309312: trace_power_start.constprop.13 \u003c-mwait_idle\n \u003cidle\u003e-0 [000] 49.309313: trace_cpu_idle \u003c-mwait_idle\n \u003cidle\u003e-0 [000] 49.309315: need_resched \u003c-mwait_idle\n\nRequested-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\nSigned-off-by: Steven Rostedt \u003crostedt@goodmis.org\u003e\n" }, { "commit": "efc96737bd82b508794d2b28061a12af4a3f7766", "tree": "e9fe4982967b74c0d25a35a2d7f7c62d8be98a47", "parents": [ "1ec454baf1245df4fdb5dae728da3363630ce6de", "7e9a49ef542610609144d1afcd516dc3fafac4d6" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Fri Nov 11 08:19:37 2011 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Fri Nov 11 08:19:37 2011 +0100" }, "message": "Merge branch \u0027tip/perf/core\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace into perf/core\n" }, { "commit": "7e9a49ef542610609144d1afcd516dc3fafac4d6", "tree": "a8b3748cbbb2ab61998d4c8e2f8c055e0edda104", "parents": [ "d4d34b981a5327eec956c6cb4cce397ce6f57279" ], "author": { "name": "Jiri Olsa", "email": "jolsa@redhat.com", "time": "Mon Nov 07 16:08:49 2011 +0100" }, "committer": { "name": "Steven Rostedt", "email": "rostedt@goodmis.org", "time": "Mon Nov 07 13:48:35 2011 -0500" }, "message": "tracing/latency: Fix header output for latency tracers\n\nIn case the the graph tracer (CONFIG_FUNCTION_GRAPH_TRACER) or even the\nfunction tracer (CONFIG_FUNCTION_TRACER) are not set, the latency tracers\ndo not display proper latency header.\n\nThe involved/fixed latency tracers are:\n wakeup_rt\n wakeup\n preemptirqsoff\n preemptoff\n irqsoff\n\nThe patch adds proper handling of tracer configuration options for latency\ntracers, and displaying correct header info accordingly.\n\n* The current output (for wakeup tracer) with both graph and function\n tracers disabled is:\n\n # tracer: wakeup\n #\n \u003cidle\u003e-0 0d.h5 1us+: 0:120:R + [000] 7: 0:R watchdog/0\n \u003cidle\u003e-0 0d.h5 3us+: ttwu_do_activate.clone.1 \u003c-try_to_wake_up\n ...\n\n* The fixed output is:\n\n # tracer: wakeup\n #\n # wakeup latency trace v1.1.5 on 3.1.0-tip+\n # --------------------------------------------------------------------\n # latency: 55 us, #4/4, CPU#0 | (M:preempt VP:0, KP:0, SP:0 HP:0 #P:2)\n # -----------------\n # | task: migration/0-6 (uid:0 nice:0 policy:1 rt_prio:99)\n # -----------------\n #\n # _------\u003d\u003e CPU#\n # / _-----\u003d\u003e irqs-off\n # | / _----\u003d\u003e need-resched\n # || / _---\u003d\u003e hardirq/softirq\n # ||| / _--\u003d\u003e preempt-depth\n # |||| / delay\n # cmd pid ||||| time | caller\n # \\ / ||||| \\ | /\n cat-1129 0d..4 1us : 1129:120:R + [000] 6: 0:R migration/0\n cat-1129 0d..4 2us+: ttwu_do_activate.clone.1 \u003c-try_to_wake_up\n\n* The current output (for wakeup tracer) with only function\n tracer enabled is:\n\n # tracer: wakeup\n #\n cat-1140 0d..4 1us+: 1140:120:R + [000] 6: 0:R migration/0\n cat-1140 0d..4 2us : ttwu_do_activate.clone.1 \u003c-try_to_wake_up\n\n* The fixed output is:\n # tracer: wakeup\n #\n # wakeup latency trace v1.1.5 on 3.1.0-tip+\n # --------------------------------------------------------------------\n # latency: 207 us, #109/109, CPU#1 | (M:preempt VP:0, KP:0, SP:0 HP:0 #P:2)\n # -----------------\n # | task: watchdog/1-12 (uid:0 nice:0 policy:1 rt_prio:99)\n # -----------------\n #\n # _------\u003d\u003e CPU#\n # / _-----\u003d\u003e irqs-off\n # | / _----\u003d\u003e need-resched\n # || / _---\u003d\u003e hardirq/softirq\n # ||| / _--\u003d\u003e preempt-depth\n # |||| / delay\n # cmd pid ||||| time | caller\n # \\ / ||||| \\ | /\n \u003cidle\u003e-0 1d.h5 1us+: 0:120:R + [001] 12: 0:R watchdog/1\n \u003cidle\u003e-0 1d.h5 3us : ttwu_do_activate.clone.1 \u003c-try_to_wake_up\n\nLink: http://lkml.kernel.org/r/20111107150849.GE1807@m.brq.redhat.com\n\nCc: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\nCc: Ingo Molnar \u003cmingo@redhat.com\u003e\nSigned-off-by: Jiri Olsa \u003cjolsa@redhat.com\u003e\nSigned-off-by: Steven Rostedt \u003crostedt@goodmis.org\u003e\n" }, { "commit": "7115e3fcf45514db7525a05365b10454ff7f345e", "tree": "17450e6337d559cc35dae6a7a73abab01ac63f00", "parents": [ "1f6e05171bb5cc32a4d6437ab2269fc21d169ca7", "c752d04066a36ae30b29795f3fa3f536292c1f8c" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Wed Oct 26 17:03:38 2011 +0200" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Wed Oct 26 17:03:38 2011 +0200" }, "message": "Merge branch \u0027perf-core-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip\n\n* \u0027perf-core-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (121 commits)\n perf symbols: Increase symbol KSYM_NAME_LEN size\n perf hists browser: Refuse \u0027a\u0027 hotkey on non symbolic views\n perf ui browser: Use libslang to read keys\n perf tools: Fix tracing info recording\n perf hists browser: Elide DSO column when it is set to just one DSO, ditto for threads\n perf hists: Don\u0027t consider filtered entries when calculating column widths\n perf hists: Don\u0027t decay total_period for filtered entries\n perf hists browser: Honour symbol_conf.show_{nr_samples,total_period}\n perf hists browser: Do not exit on tab key with single event\n perf annotate browser: Don\u0027t change selection line when returning from callq\n perf tools: handle endianness of feature bitmap\n perf tools: Add prelink suggestion to dso update message\n perf script: Fix unknown feature comment\n perf hists browser: Apply the dso and thread filters when merging new batches\n perf hists: Move the dso and thread filters from hist_browser\n perf ui browser: Honour the xterm colors\n perf top tui: Give color hints just on the percentage, like on --stdio\n perf ui browser: Make the colors configurable and change the defaults\n perf tui: Remove unneeded call to newtCls on startup\n perf hists: Don\u0027t format the percentage on hist_entry__snprintf\n ...\n\nFix up conflicts in arch/x86/kernel/kprobes.c manually.\n\nIngo\u0027s tree did the insane \"add volatile to const array\", which just\ndoesn\u0027t make sense (\"volatile const\"?). But we could remove the const\n*and* make the array volatile to make doubly sure that gcc doesn\u0027t\noptimize it away..\n\nAlso fix up kernel/trace/ring_buffer.c non-data-conflicts manually: the\nreader_lock has been turned into a raw lock by the core locking merge,\nand there was a new user of it introduced in this perf core merge. Make\nsure that new use also uses the raw accessor functions.\n" }, { "commit": "436fc280261dcfce5af38f08b89287750dc91cd2", "tree": "5a57ba115f7f9d19c0185673fa1bfba9dfc292da", "parents": [ "9b5f8b31af57a8ce9e9f77864d9143b5e3304815" ], "author": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Fri Oct 14 10:44:25 2011 -0400" }, "committer": { "name": "Steven Rostedt", "email": "rostedt@goodmis.org", "time": "Fri Oct 14 10:44:25 2011 -0400" }, "message": "tracing: Fix returning of duplicate data after EOF in trace_pipe_raw\n\nThe trace_pipe_raw handler holds a cached page from the time the file\nis opened to the time it is closed. The cached page is used to handle\nthe case of the user space buffer being smaller than what was read from\nthe ring buffer. The left over buffer is held in the cache so that the\nnext read will continue where the data left off.\n\nAfter EOF is returned (no more data in the buffer), the index of\nthe cached page is set to zero. If a user app reads the page again\nafter EOF, the check in the buffer will see that the cached page\nis less than page size and will return the cached page again. This\nwill cause reading the trace_pipe_raw again after EOF to return\nduplicate data, making the output look like the time went backwards\nbut instead data is just repeated.\n\nThe fix is to not reset the index right after all data is read\nfrom the cache, but to reset it after all data is read and more\ndata exists in the ring buffer.\n\nCc: stable \u003cstable@kernel.org\u003e\nReported-by: Jeremy Eder \u003cjeder@redhat.com\u003e\nSigned-off-by: Steven Rostedt \u003crostedt@goodmis.org\u003e\n" }, { "commit": "9b5f8b31af57a8ce9e9f77864d9143b5e3304815", "tree": "fad2ac950e2b326cec325014016c2135403b3bf2", "parents": [ "910e94dd0cc5abacebf0bd5ffd859f61b9583857" ], "author": { "name": "Geunsik Lim", "email": "geunsik.lim@samsung.com", "time": "Fri Aug 12 14:30:22 2011 +0900" }, "committer": { "name": "Steven Rostedt", "email": "rostedt@goodmis.org", "time": "Fri Oct 14 10:41:33 2011 -0400" }, "message": "ftrace: Fix README to state tracing_on to start/stop tracing\n\ntracing_enabled option is deprecated.\nTo start/stop tracing, write to /sys/kernel/debug/tracing/tracing_on\nwithout tracing_enabled. This patch is based on Linux 3.1.0-rc1\n\nSigned-off-by: Geunsik Lim \u003cgeunsik.lim@samsung.com\u003e\nLink: http://lkml.kernel.org/r/1313127022-23830-1-git-send-email-leemgs1@gmail.com\nSigned-off-by: Steven Rostedt \u003crostedt@goodmis.org\u003e\n" }, { "commit": "d696b58ca2c3ca76e784ef89a7e0453d9b7ab187", "tree": "e5f02a13dc8fdec22e9223189122e5938e9ce77e", "parents": [ "e0a413f619ef8bc366dafc6f8221674993b8d85f" ], "author": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Thu Sep 22 11:50:27 2011 -0400" }, "committer": { "name": "Steven Rostedt", "email": "rostedt@goodmis.org", "time": "Tue Oct 11 09:13:53 2011 -0400" }, "message": "tracing: Do not allocate buffer for trace_marker\n\nWhen doing intense tracing, the kmalloc inside trace_marker can\nintroduce side effects to what is being traced.\n\nAs trace_marker() is used by userspace to inject data into the\nkernel ring buffer, it needs to do so with the least amount\nof intrusion to the operations of the kernel or the user space\napplication.\n\nAs the ring buffer is designed to write directly into the buffer\nwithout the need to make a temporary buffer, and userspace already\nwent through the hassle of knowing how big the write will be,\nwe can simply pin the userspace pages and write the data directly\ninto the buffer. This improves the impact of tracing via trace_marker\ntremendously!\n\nThanks to Peter Zijlstra and Thomas Gleixner for pointing out the\nuse of get_user_pages_fast() and kmap_atomic().\n\nSuggested-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\nSuggested-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nSigned-off-by: Steven Rostedt \u003crostedt@goodmis.org\u003e\n" }, { "commit": "e0a413f619ef8bc366dafc6f8221674993b8d85f", "tree": "a6696b0e7ef5422490bdbcc28d385c031d3e4eb8", "parents": [ "e36de1de4a5f95b7cb3e5c37d10e6bbb91833ef0" ], "author": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Thu Sep 29 21:26:16 2011 -0400" }, "committer": { "name": "Steven Rostedt", "email": "rostedt@goodmis.org", "time": "Tue Oct 11 09:13:25 2011 -0400" }, "message": "tracing: Warn on output if the function tracer was found corrupted\n\nAs the function tracer is very intrusive, lots of self checks are\nperformed on the tracer and if something is found to be strange\nit will shut itself down keeping it from corrupting the rest of the\nkernel. This shutdown may still allow functions to be traced, as the\ntracing only stops new modifications from happening. Trying to stop\nthe function tracer itself can cause more harm as it requires code\nmodification.\n\nAlthough a WARN_ON() is executed, a user may not notice it. To help\nthe user see that something isn\u0027t right with the tracing of the system\na big warning is added to the output of the tracer that lets the user\nknow that their data may be incomplete.\n\nReported-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\nSigned-off-by: Steven Rostedt \u003crostedt@goodmis.org\u003e\n" }, { "commit": "6249687f76b69cc0b2ad34636f4a18d693ef3262", "tree": "9c007b85738eb86f113a9a6de1e35129532e5f54", "parents": [ "c64e148a3be3cb786534ad38298c25c833116c26" ], "author": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Mon Sep 19 11:35:58 2011 -0400" }, "committer": { "name": "Steven Rostedt", "email": "rostedt@goodmis.org", "time": "Mon Sep 19 11:35:58 2011 -0400" }, "message": "tracing: Add a counter clock for those that do not trust clocks\n\nWhen debugging tight race conditions, it can be helpful to have a\nsynchronized tracing method. Although in most cases the global clock\nprovides this functionality, if timings is not the issue, it is more\ncomforting to know that the order of events really happened in a precise\norder.\n\nInstead of using a clock, add a \"counter\" that is simply an incrementing\natomic 64bit counter that orders the events as they are perceived to\nhappen.\n\nThe trace_clock_counter() is added from the attempt by Peter Zijlstra\ntrying to convert the trace_clock_global() to it. I took Peter\u0027s counter\ncode and made trace_clock_counter() instead, and added it to the choice\nof clocks. Just echo counter \u003e /debug/tracing/trace_clock to activate\nit.\n\nRequested-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\nRequested-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nReviewed-By: Valdis Kletnieks \u003cvaldis.kletnieks@vt.edu\u003e\nSigned-off-by: Steven Rostedt \u003crostedt@goodmis.org\u003e\n" }, { "commit": "5389f6fad27019f2ba78f1b332f719ec05f12a42", "tree": "01b9511a75c147808f48a7f4408bf2e35b12623d", "parents": [ "740969f91e950b64a18fdd0a25164cdee042abf0" ], "author": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Sat Jul 25 17:13:33 2009 +0200" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Tue Sep 13 11:11:52 2011 +0200" }, "message": "locking, tracing: Annotate tracing locks as raw\n\nThe tracing locks can be taken in atomic context and therefore\ncannot be preempted on -rt - annotate it.\n\nIn mainline this change documents the low level nature of\nthe lock - otherwise there\u0027s no functional difference. Lockdep\nand Sparse checking will work as usual.\n\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "c64e148a3be3cb786534ad38298c25c833116c26", "tree": "e75fb98c0699858a32f8c713ccb3c701e01523f8", "parents": [ "f81ab074c30234b07c8309c542cafd07bed721f7" ], "author": { "name": "Vaibhav Nagarnaik", "email": "vnagarnaik@google.com", "time": "Tue Aug 16 14:46:16 2011 -0700" }, "committer": { "name": "Steven Rostedt", "email": "rostedt@goodmis.org", "time": "Tue Aug 30 12:27:45 2011 -0400" }, "message": "trace: Add ring buffer stats to measure rate of events\n\nThe stats file under per_cpu folder provides the number of entries,\noverruns and other statistics about the CPU ring buffer. However, the\nnumbers do not provide any indication of how full the ring buffer is in\nbytes compared to the overall size in bytes. Also, it is helpful to know\nthe rate at which the cpu buffer is filling up.\n\nThis patch adds an entry \"bytes: \" in printed stats for per_cpu ring\nbuffer which provides the actual bytes consumed in the ring buffer. This\nfield includes the number of bytes used by recorded events and the\npadding bytes added when moving the tail pointer to next page.\n\nIt also adds the following time stamps:\n\"oldest event ts:\" - the oldest timestamp in the ring buffer\n\"now ts:\" - the timestamp at the time of reading\n\nThe field \"now ts\" provides a consistent time snapshot to the userspace\nwhen being read. This is read from the same trace clock used by tracing\nevent timestamps.\n\nTogether, these values provide the rate at which the buffer is filling\nup, from the formula:\nbytes / (now_ts - oldest_event_ts)\n\nSigned-off-by: Vaibhav Nagarnaik \u003cvnagarnaik@google.com\u003e\nCc: Michael Rubin \u003cmrubin@google.com\u003e\nCc: David Sharp \u003cdhsharp@google.com\u003e\nLink: http://lkml.kernel.org/r/1313531179-9323-3-git-send-email-vnagarnaik@google.com\nSigned-off-by: Steven Rostedt \u003crostedt@goodmis.org\u003e\n" }, { "commit": "f81ab074c30234b07c8309c542cafd07bed721f7", "tree": "58ec049e4f63d0f8a0b696195cf77da2b6d04b01", "parents": [ "86b6ef21b80ac6565d172cdab4384404de007eea" ], "author": { "name": "Vaibhav Nagarnaik", "email": "vnagarnaik@google.com", "time": "Tue Aug 16 14:46:15 2011 -0700" }, "committer": { "name": "Steven Rostedt", "email": "rostedt@goodmis.org", "time": "Tue Aug 30 12:27:44 2011 -0400" }, "message": "trace: Add a new readonly entry to report total buffer size\n\nThe current file \"buffer_size_kb\" reports the size of per-cpu buffer and\nnot the overall memory allocated which could be misleading. A new file\n\"buffer_total_size_kb\" adds up all the enabled CPU buffer sizes and\nreports it. This is only a readonly entry.\n\nSigned-off-by: Vaibhav Nagarnaik \u003cvnagarnaik@google.com\u003e\nCc: Michael Rubin \u003cmrubin@google.com\u003e\nCc: David Sharp \u003cdhsharp@google.com\u003e\nLink: http://lkml.kernel.org/r/1313531179-9323-2-git-send-email-vnagarnaik@google.com\nSigned-off-by: Steven Rostedt \u003crostedt@goodmis.org\u003e\n" }, { "commit": "4a9bd3f134decd6d16ead8d288342d57aad486be", "tree": "ca9eca5fcbe93dc8a433d839221505ad8fba5296", "parents": [ "259032bfe379281bf7cba512b7705bdb4ce41db5" ], "author": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Thu Jul 14 16:36:53 2011 -0400" }, "committer": { "name": "Steven Rostedt", "email": "rostedt@goodmis.org", "time": "Thu Jul 14 16:36:53 2011 -0400" }, "message": "tracing: Have dynamic size event stack traces\n\nCurrently the stack trace per event in ftace is only 8 frames.\nThis can be quite limiting and sometimes useless. Especially when\nthe \"ignore frames\" is wrong and we also use up stack frames for\nthe event processing itself.\n\nChange this to be dynamic by adding a percpu buffer that we can\nwrite a large stack frame into and then copy into the ring buffer.\n\nFor interrupts and NMIs that come in while another event is being\nprocess, will only get to use the 8 frame stack. That should be enough\nas the task that it interrupted will have the full stack frame anyway.\n\nRequested-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\nSigned-off-by: Steven Rostedt \u003crostedt@goodmis.org\u003e\n" }, { "commit": "1fd8df2c3970c9e7e4e262354154ee39e58bdd7c", "tree": "640fbc584af8870917ea6d1fab4da49d299038ad", "parents": [ "c624d33f61cd05241e85b906311f0b712fdb0f32" ], "author": { "name": "Masami Hiramatsu", "email": "masami.hiramatsu.pt@hitachi.com", "time": "Wed Jun 08 16:09:34 2011 +0900" }, "committer": { "name": "Steven Rostedt", "email": "rostedt@goodmis.org", "time": "Tue Jun 14 22:48:53 2011 -0400" }, "message": "tracing/kprobes: Fix kprobe-tracer to support stack trace\n\nFix to support kernel stack trace correctly on kprobe-tracer.\nSince the execution path of kprobe-based dynamic events is different\nfrom other tracepoint-based events, normal ftrace_trace_stack() doesn\u0027t\nwork correctly. To fix that, this introduces ftrace_trace_stack_regs()\nwhich traces stack via pt_regs instead of current stack register.\n\ne.g.\n\n # echo p schedule+4 \u003e /sys/kernel/debug/tracing/kprobe_events\n # echo 1 \u003e /sys/kernel/debug/tracing/options/stacktrace\n # echo 1 \u003e /sys/kernel/debug/tracing/events/kprobes/enable\n # head -n 20 /sys/kernel/debug/tracing/trace\n bash-2968 [000] 10297.050245: p_schedule_4: (schedule+0x4/0x4ca)\n bash-2968 [000] 10297.050247: \u003cstack trace\u003e\n \u003d\u003e schedule_timeout\n \u003d\u003e n_tty_read\n \u003d\u003e tty_read\n \u003d\u003e vfs_read\n \u003d\u003e sys_read\n \u003d\u003e system_call_fastpath\n kworker/0:1-2940 [000] 10297.050265: p_schedule_4: (schedule+0x4/0x4ca)\n kworker/0:1-2940 [000] 10297.050266: \u003cstack trace\u003e\n \u003d\u003e worker_thread\n \u003d\u003e kthread\n \u003d\u003e kernel_thread_helper\n sshd-1132 [000] 10297.050365: p_schedule_4: (schedule+0x4/0x4ca)\n sshd-1132 [000] 10297.050365: \u003cstack trace\u003e\n \u003d\u003e sysret_careful\n\nNote: Even with this fix, the first entry will be skipped\nif the probe is put on the function entry area before\nthe frame pointer is set up (usually, that is 4 bytes\n (push %bp; mov %sp %bp) on x86), because stack unwinder\ndepends on the frame pointer.\n\nSigned-off-by: Masami Hiramatsu \u003cmasami.hiramatsu.pt@hitachi.com\u003e\nCc: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\nCc: yrl.pp-manager.tt@hitachi.com\nCc: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nCc: Namhyung Kim \u003cnamhyung@gmail.com\u003e\nLink: http://lkml.kernel.org/r/20110608070934.17777.17116.stgit@fedora15\nSigned-off-by: Steven Rostedt \u003crostedt@goodmis.org\u003e\n" }, { "commit": "22fe9b54d859e53bfbbbdc1a0a77a82bc453927c", "tree": "4aec2d069decbe0786ad5474908f5bbe49732ad4", "parents": [ "749230b06a753a22f6ed96e5dd60815d6ab12865" ], "author": { "name": "Peter Huewe", "email": "peterhuewe@gmx.de", "time": "Tue Jun 07 21:58:27 2011 +0200" }, "committer": { "name": "Steven Rostedt", "email": "rostedt@goodmis.org", "time": "Tue Jun 14 22:48:50 2011 -0400" }, "message": "tracing: Convert to kstrtoul_from_user\n\nThis patch replaces the code for getting an unsigned long from a\nuserspace buffer by a simple call to kstroul_from_user.\nThis makes it easier to read and less error prone.\n\nSigned-off-by: Peter Huewe \u003cpeterhuewe@gmx.de\u003e\nLink: http://lkml.kernel.org/r/1307476707-14762-1-git-send-email-peterhuewe@gmx.de\nSigned-off-by: Steven Rostedt \u003crostedt@goodmis.org\u003e\n" }, { "commit": "f56e7f8efb4ec200364f690a9902713410e24d47", "tree": "f8708b5a7f82be989b987fbf190a55054dd41c7b", "parents": [ "ffeb80fc30acbf6bd51cb47a1815f621a9d017dc" ], "author": { "name": "Jiri Olsa", "email": "jolsa@redhat.com", "time": "Fri Jun 03 16:58:49 2011 +0200" }, "committer": { "name": "Steven Rostedt", "email": "rostedt@goodmis.org", "time": "Tue Jun 14 22:48:48 2011 -0400" }, "message": "tracing, function: Fix trace header to follow context-info option\n\nThe header display of function tracer does not follow\nthe context-info option, so field names are displayed even\nif this option is off.\n\nAdded check for TRACE_ITER_CONTEXT_INFO trace_flags.\n\nWith following commands:\n\t# echo function \u003e ./current_tracer\n\t# echo 0 \u003e options/context-info\n\t# cat trace\n\nThis is what it looked like before:\n# tracer: function\n#\n# TASK-PID CPU# TIMESTAMP FUNCTION\n# | | | | |\nadd_preempt_count \u003c-schedule\nrcu_note_context_switch \u003c-schedule\n...\n\nThis is what it looks like now:\n# tracer: function\n#\n_raw_spin_unlock_irqrestore \u003c-hrtimer_try_to_cancel\n...\n\nSigned-off-by: Jiri Olsa \u003cjolsa@redhat.com\u003e\nLink: http://lkml.kernel.org/r/1307113131-10045-4-git-send-email-jolsa@redhat.com\nSigned-off-by: Steven Rostedt \u003crostedt@goodmis.org\u003e\n" }, { "commit": "cf30cf67d6c7592c670ec946d89fc15ee0deb0eb", "tree": "f86ca612b255ee8570e2fd6198e066ea8cf33fe0", "parents": [ "4f271a2a60c748599b30bb4dafff30d770439b96" ], "author": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Tue Jun 14 22:44:07 2011 -0400" }, "committer": { "name": "Steven Rostedt", "email": "rostedt@goodmis.org", "time": "Tue Jun 14 22:48:45 2011 -0400" }, "message": "tracing: Add disable_on_free option\n\nAdd a trace option to disable tracing on free. When this option is\nset, a write into the free_buffer file will not only shrink the\nring buffer down to zero, but it will also disable tracing.\n\nCc: Vaibhav Nagarnaik \u003cvnagarnaik@google.com\u003e\nSigned-off-by: Steven Rostedt \u003crostedt@goodmis.org\u003e\n" }, { "commit": "4f271a2a60c748599b30bb4dafff30d770439b96", "tree": "4b6aa671e0fbe3e81a423a551ce5aa1032725e2b", "parents": [ "7ea5906405a1f3fc1c0033dfd7e02f2cfd1de5e5" ], "author": { "name": "Vaibhav Nagarnaik", "email": "vnagarnaik@google.com", "time": "Mon Jun 13 17:51:57 2011 -0700" }, "committer": { "name": "Steven Rostedt", "email": "rostedt@goodmis.org", "time": "Tue Jun 14 22:48:37 2011 -0400" }, "message": "tracing: Add a proc file to stop tracing and free buffer\n\nThe proc file entry buffer_size_kb is used to set the size of tracing\nbuffer. The memory to expand the buffer size is kernel memory. Consider\na use case where tracing is handled by a user space utility, which acts\nas a gate keeper for tracing requests. In an OOM condition, tracing is\nconsidered a low priority task and if the utility gets killed the ring\nbuffer memory cannot be released back to the kernel.\n\nThis patch adds a proc file called \"free_buffer\" whose purpose is to\nstop tracing and free up the ring buffer when it is closed.\n\nThe user space process can then set the desired size in buffer_size_kb\nfile and open the fd to the \"free_buffer\" file. Under OOM condition, if\nthe process gets killed, the kernel closes the file descriptor. The\nrelease handler stops the tracing and releases the kernel memory\nautomatically.\n\nCc: Ingo Molnar \u003cmingo@redhat.com\u003e\nCc: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\nCc: Michael Rubin \u003cmrubin@google.com\u003e\nCc: David Sharp \u003cdhsharp@google.com\u003e\nSigned-off-by: Vaibhav Nagarnaik \u003cvnagarnaik@google.com\u003e\nLink: http://lkml.kernel.org/r/1308012717-11148-1-git-send-email-vnagarnaik@google.com\nSigned-off-by: Steven Rostedt \u003crostedt@goodmis.org\u003e\n" }, { "commit": "7ea5906405a1f3fc1c0033dfd7e02f2cfd1de5e5", "tree": "f75e962db25ccd3efa81e1fc69ce3e60d228c7a6", "parents": [ "e7e2ee89a9dbf48d70a922d5625cd7320a27cbff" ], "author": { "name": "Vaibhav Nagarnaik", "email": "vnagarnaik@google.com", "time": "Tue May 03 17:56:42 2011 -0700" }, "committer": { "name": "Steven Rostedt", "email": "rostedt@goodmis.org", "time": "Tue Jun 14 22:04:39 2011 -0400" }, "message": "tracing: Use NUMA allocation for per-cpu ring buffer pages\n\nThe tracing ring buffer is a group of per-cpu ring buffers where\nallocation and logging is done on a per-cpu basis. The events that are\ngenerated on a particular CPU are logged in the corresponding buffer.\nThis is to provide wait-free writes between CPUs and good NUMA node\nlocality while accessing the ring buffer.\n\nHowever, the allocation routines consider NUMA locality only for buffer\npage metadata and not for the actual buffer page. This causes the pages\nto be allocated on the NUMA node local to the CPU where the allocation\nroutine is running at the time.\n\nThis patch fixes the problem by using a NUMA node specific allocation\nroutine so that the pages are allocated from a NUMA node local to the\nlogging CPU.\n\nI tested with the getuid_microbench from autotest. It is a simple binary\nthat calls getuid() in a loop and measures the average time for the\nsyscall to complete. The following command was used to test:\n$ getuid_microbench 1000000\n\nCompared the numbers found on kernel with and without this patch and\nfound that logging latency decreases by 30-50 ns/call.\ntracing with non-NUMA allocation - 569 ns/call\ntracing with NUMA allocation - 512 ns/call\n\nSigned-off-by: Vaibhav Nagarnaik \u003cvnagarnaik@google.com\u003e\nCc: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\nCc: Ingo Molnar \u003cmingo@redhat.com\u003e\nCc: Michael Rubin \u003cmrubin@google.com\u003e\nCc: David Sharp \u003cdhsharp@google.com\u003e\nLink: http://lkml.kernel.org/r/1304470602-20366-1-git-send-email-vnagarnaik@google.com\nSigned-off-by: Steven Rostedt \u003crostedt@goodmis.org\u003e\n" }, { "commit": "e7e2ee89a9dbf48d70a922d5625cd7320a27cbff", "tree": "58a5d3387c7b0bf9a4f434867234c0771c22addb", "parents": [ "b58f6b0dd3d677338b9065388cc2cc942b86338e" ], "author": { "name": "Vaibhav Nagarnaik", "email": "vnagarnaik@google.com", "time": "Tue May 10 13:27:21 2011 -0700" }, "committer": { "name": "Steven Rostedt", "email": "rostedt@goodmis.org", "time": "Tue Jun 14 21:59:41 2011 -0400" }, "message": "tracing: Schedule a delayed work to call wakeup()\n\nIn using syscall tracing by concurrent processes, the wakeup() that is\ncalled in the event commit function causes contention on the spin lock\nof the waitqueue. I enabled sys_enter_getuid and sys_exit_getuid\ntracepoints, and by running getuid_microbench from autotest in parallel\nI found that the contention causes exponential latency increase in the\ntracing path.\n\nThe autotest binary getuid_microbench calls getuid() in a tight loop for\nthe given number of iterations and measures the average time required to\ncomplete a single invocation of syscall.\n\nThe patch schedules a delayed work after 2 ms once an event commit calls\nto wake up the trace wait_queue. This removes the delay caused by\ncontention on spin lock in wakeup() and amortizes the wakeup() calls\nscheduled over the 2 ms period.\n\nIn the following example, the script enables the sys_enter_getuid and\nsys_exit_getuid tracepoints and runs the getuid_microbench in parallel\nwith the given number of processes. The output clearly shows the latency\nincrease caused by contentions.\n\n$ ~/getuid.sh 1\n1000000 calls in 0.720974253 s (720.974253 ns/call)\n\n$ ~/getuid.sh 2\n1000000 calls in 1.166457554 s (1166.457554 ns/call)\n1000000 calls in 1.168933765 s (1168.933765 ns/call)\n\n$ ~/getuid.sh 3\n1000000 calls in 1.783827516 s (1783.827516 ns/call)\n1000000 calls in 1.795553270 s (1795.553270 ns/call)\n1000000 calls in 1.796493376 s (1796.493376 ns/call)\n\n$ ~/getuid.sh 4\n1000000 calls in 4.483041796 s (4483.041796 ns/call)\n1000000 calls in 4.484165388 s (4484.165388 ns/call)\n1000000 calls in 4.484850762 s (4484.850762 ns/call)\n1000000 calls in 4.485643576 s (4485.643576 ns/call)\n\n$ ~/getuid.sh 5\n1000000 calls in 6.497521653 s (6497.521653 ns/call)\n1000000 calls in 6.502000236 s (6502.000236 ns/call)\n1000000 calls in 6.501709115 s (6501.709115 ns/call)\n1000000 calls in 6.502124100 s (6502.124100 ns/call)\n1000000 calls in 6.502936358 s (6502.936358 ns/call)\n\nAfter the patch, the latencies scale better.\n1000000 calls in 0.728720455 s (728.720455 ns/call)\n\n1000000 calls in 0.842782857 s (842.782857 ns/call)\n1000000 calls in 0.883803135 s (883.803135 ns/call)\n\n1000000 calls in 0.902077764 s (902.077764 ns/call)\n1000000 calls in 0.902838202 s (902.838202 ns/call)\n1000000 calls in 0.908896885 s (908.896885 ns/call)\n\n1000000 calls in 0.932523515 s (932.523515 ns/call)\n1000000 calls in 0.958009672 s (958.009672 ns/call)\n1000000 calls in 0.986188020 s (986.188020 ns/call)\n1000000 calls in 0.989771102 s (989.771102 ns/call)\n\n1000000 calls in 0.933518391 s (933.518391 ns/call)\n1000000 calls in 0.958897947 s (958.897947 ns/call)\n1000000 calls in 1.031038897 s (1031.038897 ns/call)\n1000000 calls in 1.089516025 s (1089.516025 ns/call)\n1000000 calls in 1.141998347 s (1141.998347 ns/call)\n\nSigned-off-by: Vaibhav Nagarnaik \u003cvnagarnaik@google.com\u003e\nCc: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\nCc: Ingo Molnar \u003cmingo@redhat.com\u003e\nCc: Michael Rubin \u003cmrubin@google.com\u003e\nCc: David Sharp \u003cdhsharp@google.com\u003e\nCc: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\nLink: http://lkml.kernel.org/r/1305059241-7629-1-git-send-email-vnagarnaik@google.com\nSigned-off-by: Steven Rostedt \u003crostedt@goodmis.org\u003e\n" }, { "commit": "932fed4e2e42c3d730c01bb63b1c4f812c533d5b", "tree": "11b1afac3a40d253cdb905c42901edfaae5e196e", "parents": [ "57d524154ffe99d27fb55e0e30ddbad9f4c35806", "693d92a1bbc9e42681c42ed190bd42b636ca876f" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Tue May 10 17:05:24 2011 +0200" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Tue May 10 17:05:45 2011 +0200" }, "message": "Merge commit \u0027v2.6.39-rc7\u0027 into perf/core\n\nMerge reason: pull in the latest fixes.\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "a3a4a5acd3bd2f6f1e102e1f1b9d2e2bb320a7fd", "tree": "8ed40e1c0bb654d824e39e6b42d1619a2807e75d", "parents": [ "e5e06985bec89414ce2b3f301c24d884f609b020" ], "author": { "name": "Arjan van de Ven", "email": "arjan@linux.intel.com", "time": "Thu May 05 23:55:18 2011 -0400" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Fri May 06 13:20:59 2011 -0700" }, "message": "Regression: partial revert \"tracing: Remove lock_depth from event entry\"\n\nThis partially reverts commit e6e1e2593592a8f6f6380496655d8c6f67431266.\n\nThat commit changed the structure layout of the trace structure, which\nin turn broke PowerTOP (1.9x generation) quite badly.\n\nI appreciate not wanting to expose the variable in question, and\nPowerTOP was not using it, so I\u0027ve replaced the variable with just a\npadding field - that way if in the future a new field is needed it can\njust use this padding field.\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": "32673822e440eb92eb334631eb0a199d0c532d13", "tree": "c1e55c1793fa17937d9b8e0a9a2946583f1948d5", "parents": [ "fa7b69475a6c192853949ba496dd9c37b497b548", "5373db886b791b2bc7811e2c115377916c409a5d" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Wed Apr 27 10:38:30 2011 +0200" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Wed Apr 27 10:40:21 2011 +0200" }, "message": "Merge branch \u0027tip/perf/core\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-2.6-trace into perf/core\n\nConflicts:\n\tinclude/linux/perf_event.h\n\nMerge reason: pick up the latest jump-label enhancements, they are cooked ready.\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "ee5e51f51be755830f57445e268ba50e88ccbdbb", "tree": "059d6c5843275a5ab94ae01408c1dc6dbe00b2ea", "parents": [ "1813dc3776c22ad4b0294a6df8434b9a02c98109" ], "author": { "name": "Jiri Olsa", "email": "jolsa@redhat.com", "time": "Fri Mar 25 12:05:18 2011 +0100" }, "committer": { "name": "Steven Rostedt", "email": "rostedt@goodmis.org", "time": "Mon Apr 04 12:18:24 2011 -0400" }, "message": "tracing: Avoid soft lockup in trace_pipe\n\nrunning following commands:\n\n # enable the binary option\n echo 1 \u003e ./options/bin\n # disable context info option\n echo 0 \u003e ./options/context-info\n # tracing only events\n echo 1 \u003e ./events/enable\n cat trace_pipe\n\nplus forcing system to generate many tracing events,\nis causing lockup (in NON preemptive kernels) inside\ntracing_read_pipe function.\n\nThe issue is also easily reproduced by running ltp stress test.\n(ftrace_stress_test.sh)\n\nThe reasons are:\n - bin/hex/raw output functions for events are set to\n trace_nop_print function, which prints nothing and\n returns TRACE_TYPE_HANDLED value\n - LOST EVENT trace do not handle trace_seq overflow\n\nThese reasons force the while loop in tracing_read_pipe\nfunction never to break.\n\nThe attached patch fixies handling of lost event trace, and\nchanges trace_nop_print to print minimal info, which is needed\nfor the correct tracing_read_pipe processing.\n\nv2 changes:\n - omit the cond_resched changes by trace_nop_print changes\n - WARN changed to WARN_ONCE and added info to be able\n to find out the culprit\n\nv3 changes:\n - make more accurate patch comment\n\nSigned-off-by: Jiri Olsa \u003cjolsa@redhat.com\u003e\nLKML-Reference: \u003c20110325110518.GC1922@jolsa.brq.redhat.com\u003e\nSigned-off-by: Steven Rostedt \u003crostedt@goodmis.org\u003e\n" }, { "commit": "25985edcedea6396277003854657b5f3cb31a628", "tree": "f026e810210a2ee7290caeb737c23cb6472b7c38", "parents": [ "6aba74f2791287ec407e0f92487a725a25908067" ], "author": { "name": "Lucas De Marchi", "email": "lucas.demarchi@profusion.mobi", "time": "Wed Mar 30 22:57:33 2011 -0300" }, "committer": { "name": "Lucas De Marchi", "email": "lucas.demarchi@profusion.mobi", "time": "Thu Mar 31 11:26:23 2011 -0300" }, "message": "Fix common misspellings\n\nFixes generated by \u0027codespell\u0027 and manually reviewed.\n\nSigned-off-by: Lucas De Marchi \u003clucas.demarchi@profusion.mobi\u003e\n" }, { "commit": "4a0b1665db09cf2da9ad7d0f12da386373c10bfa", "tree": "aecfb7f1d6df7920fc7134125bfe24647c98cdc4", "parents": [ "9a24470b2826e4665b1484836c7ae6aba1ddea32" ], "author": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Wed Mar 09 20:09:26 2011 -0500" }, "committer": { "name": "Steven Rostedt", "email": "rostedt@goodmis.org", "time": "Thu Mar 10 10:34:58 2011 -0500" }, "message": "tracing: Fix irqoff selftest expanding max buffer\n\nIf the kernel command line declares a tracer \"ftrace\u003dsometracer\" and\nthat tracer is either not defined or is enabled after irqsoff,\nthen the irqs off selftest will fail with the following error:\n\nTesting tracer irqsoff:\n------------[ cut here ]------------\nWARNING: at /home/rostedt/work/autotest/nobackup/linux-test.git/kernel/trace/tra\nce.c:713 update_max_tr_single+0xfa/0x11b()\nHardware name:\nModules linked in:\nPid: 1, comm: swapper Not tainted 2.6.38-rc8-test #1\nCall Trace:\n [\u003cc0441d9d\u003e] ? warn_slowpath_common+0x65/0x7a\n [\u003cc049adb2\u003e] ? update_max_tr_single+0xfa/0x11b\n [\u003cc0441dc1\u003e] ? warn_slowpath_null+0xf/0x13\n [\u003cc049adb2\u003e] ? update_max_tr_single+0xfa/0x11b\n [\u003cc049e454\u003e] ? stop_critical_timing+0x154/0x204\n [\u003cc049b54b\u003e] ? trace_selftest_startup_irqsoff+0x5b/0xc1\n [\u003cc049b54b\u003e] ? trace_selftest_startup_irqsoff+0x5b/0xc1\n [\u003cc049b54b\u003e] ? trace_selftest_startup_irqsoff+0x5b/0xc1\n [\u003cc049e529\u003e] ? time_hardirqs_on+0x25/0x28\n [\u003cc0468bca\u003e] ? trace_hardirqs_on_caller+0x18/0x12f\n [\u003cc0468cec\u003e] ? trace_hardirqs_on+0xb/0xd\n [\u003cc049b54b\u003e] ? trace_selftest_startup_irqsoff+0x5b/0xc1\n [\u003cc049b6b8\u003e] ? register_tracer+0xf8/0x1a3\n [\u003cc14e93fe\u003e] ? init_irqsoff_tracer+0xd/0x11\n [\u003cc040115e\u003e] ? do_one_initcall+0x71/0x121\n [\u003cc14e93f1\u003e] ? init_irqsoff_tracer+0x0/0x11\n [\u003cc14ce3a9\u003e] ? kernel_init+0x13a/0x1b6\n [\u003cc14ce26f\u003e] ? kernel_init+0x0/0x1b6\n [\u003cc0403842\u003e] ? kernel_thread_helper+0x6/0x10\n---[ end trace e93713a9d40cd06c ]---\n.. no entries found ..FAILED!\n\nWhat happens is the \"ftrace\u003d...\" will expand the ring buffer to its\ndefault size (from its minimum size) but it will not expand the\nmax ring buffer (the ring buffer to store maximum latencies).\nWhen the irqsoff test runs, it will call the ring buffer swap routine\nthat checks if the max ring buffer is the same size as the normal\nring buffer, and will fail if it is not. This causes the test to fail.\n\nThe solution is to expand the max ring buffer before running the self\ntest if the max ring buffer is used by that tracer and the normal ring\nbuffer is expanded. The max ring buffer should be shrunk again after\nthe test is done to save space.\n\nSigned-off-by: Steven Rostedt \u003crostedt@goodmis.org\u003e\n" }, { "commit": "e6e1e2593592a8f6f6380496655d8c6f67431266", "tree": "00ef843b23fac5ab6be92725ce5b01487f555997", "parents": [ "de29be5e712dc8b7eef2bef9417af3bb6a88e47a" ], "author": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Wed Mar 09 10:41:56 2011 -0500" }, "committer": { "name": "Steven Rostedt", "email": "rostedt@goodmis.org", "time": "Thu Mar 10 10:31:48 2011 -0500" }, "message": "tracing: Remove lock_depth from event entry\n\nThe lock_depth field in the event headers was added as a temporary\ndata point for help in removing the BKL. Now that the BKL is pretty\nmuch been removed, we can remove this field.\n\nThis in turn changes the header from 12 bytes to 8 bytes,\nremoving the 4 byte buffer that gcc would insert if the first field\nin the data load was 8 bytes in size.\n\nSigned-off-by: Steven Rostedt \u003crostedt@goodmis.org\u003e\n" }, { "commit": "750912fa366312e9c5bc83eab352898a26750401", "tree": "bb8e5cd1444a74ea283e3fa55607225e7fda4d70", "parents": [ "2a8247a2600c3e087a568fc68a6ec4eedac27ef1" ], "author": { "name": "David Sharp", "email": "dhsharp@google.com", "time": "Wed Dec 08 13:46:47 2010 -0800" }, "committer": { "name": "Steven Rostedt", "email": "rostedt@goodmis.org", "time": "Wed Mar 09 13:52:27 2011 -0500" }, "message": "tracing: Add an \u0027overwrite\u0027 trace_option.\n\nAdd an \"overwrite\" trace_option for ftrace to control whether the buffer should\nbe overwritten on overflow or not. The default remains to overwrite old events\nwhen the buffer is full. This patch adds the option to instead discard newest\nevents when the buffer is full. This is useful to get a snapshot of traces just\nafter enabling traces. Dropping the current event is also a simpler code path.\n\nSigned-off-by: David Sharp \u003cdhsharp@google.com\u003e\nLKML-Reference: \u003c1291844807-15481-1-git-send-email-dhsharp@google.com\u003e\nSigned-off-by: Steven Rostedt \u003crostedt@goodmis.org\u003e\n" }, { "commit": "6752ab4a9c30d5411b2dfdb251a3f1cb18aae487", "tree": "2f6e2bb5b562c43b3b3d7efe095e196a19995395", "parents": [ "87d80de2800d087ea833cb79bc13f85ff34ed49f" ], "author": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Tue Feb 08 13:54:06 2011 -0500" }, "committer": { "name": "Steven Rostedt", "email": "rostedt@goodmis.org", "time": "Tue Feb 08 17:14:58 2011 -0500" }, "message": "tracing: Deprecate tracing_enabled for tracing_on\n\ntracing_enabled should not be used, it is heavy weight and does not\ndo much in helping lower the overhead.\n\ntracing_on should be used instead. Warn users to use tracing_on\nwhen tracing_enabled is used as it will soon be removed from the\ntracing directory.\n\nSigned-off-by: Steven Rostedt \u003crostedt@goodmis.org\u003e\n" }, { "commit": "1dbd1951f39e13da579ffe879cce19586d0462de", "tree": "faf1ea3208d0e612968a2892917c036a32ff9bda", "parents": [ "bd1c8b22b7b81c6f6c4f5c19cb2387da3d02fb0f" ], "author": { "name": "Li Zefan", "email": "lizf@cn.fujitsu.com", "time": "Thu Dec 09 15:47:56 2010 +0800" }, "committer": { "name": "Steven Rostedt", "email": "rostedt@goodmis.org", "time": "Fri Jan 07 23:20:02 2011 -0500" }, "message": "tracing: Fix preempt count leak\n\nWhile running my ftrace stress test, this showed up:\n\nBUG: sleeping function called from invalid context at mm/mmap.c:233\n...\nnote: cat[3293] exited with preempt_count 1\n\nThe bug was introduced by commit 91e86e560d0b3ce4c5fc64fd2bbb99f856a30a4e\n(\"tracing: Fix recursive user stack trace\")\n\nCc: \u003cstable@kernel.org\u003e\nSigned-off-by: Li Zefan \u003clizf@cn.fujitsu.com\u003e\nLKML-Reference: \u003c4D0089AC.1020802@cn.fujitsu.com\u003e\nSigned-off-by: Steven Rostedt \u003crostedt@goodmis.org\u003e\n" }, { "commit": "d949750fed168b6553ca11ed19e4affd19d7a4d7", "tree": "a98953ef3448b7b4909f1d90be266e0cfbdff328", "parents": [ "ce677831a4abd0f9f957c90ac6f6a0d0472bafb4", "e63233f75a1a6bfa97ffb52a20cc6801a4c63fb2" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Thu Dec 16 11:21:24 2010 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Thu Dec 16 11:21:24 2010 +0100" }, "message": "Merge branch \u0027tip/perf/urgent\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-2.6-trace into perf/urgent\n" }, { "commit": "364829b1263b44aa60383824e4c1289d83d78ca7", "tree": "daaaf4cecd56ff9f3f9a2eadc69d0cc4f361c607", "parents": [ "60e677373be9c0bf7c9a22937601d5a40e51c042" ], "author": { "name": "Slava Pestov", "email": "slavapestov@google.com", "time": "Wed Nov 24 15:13:16 2010 -0800" }, "committer": { "name": "Steven Rostedt", "email": "rostedt@goodmis.org", "time": "Tue Nov 30 12:18:17 2010 -0500" }, "message": "tracing: Fix panic when lseek() called on \"trace\" opened for writing\n\nThe file_ops struct for the \"trace\" special file defined llseek as seq_lseek().\nHowever, if the file was opened for writing only, seq_open() was not called,\nand the seek would dereference a null pointer, file-\u003eprivate_data.\n\nThis patch introduces a new wrapper for seq_lseek() which checks if the file\ndescriptor is opened for reading first. If not, it does nothing.\n\nCc: \u003cstable@kernel.org\u003e\nSigned-off-by: Slava Pestov \u003cslavapestov@google.com\u003e\nLKML-Reference: \u003c1290640396-24179-1-git-send-email-slavapestov@google.com\u003e\nSigned-off-by: Steven Rostedt \u003crostedt@goodmis.org\u003e\n" }, { "commit": "d2f30c73aba19be828c759edcd21140390cd06e4", "tree": "b9bad75b11e21680f8f9443f0143d62be23cae78", "parents": [ "1b065fdff1c950d96e4c571abe873a9a8aaa6d51", "02a9d03772aa1ff33a26180a2da0bfb191240eda" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Sat Nov 27 07:28:17 2010 +0900" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Sat Nov 27 07:28:17 2010 +0900" }, "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 perf symbols: Remove incorrect open-coded container_of()\n perf record: Handle restrictive permissions in /proc/{kallsyms,modules}\n x86/kprobes: Prevent kprobes to probe on save_args()\n irq_work: Drop cmpxchg() result\n perf: Fix owner-list vs exit\n x86, hw_nmi: Move backtrace_mask declaration under ARCH_HAS_NMI_WATCHDOG\n tracing: Fix recursive user stack trace\n perf,hw_breakpoint: Initialize hardware api earlier\n x86: Ignore trap bits on single step exceptions\n tracing: Force arch_local_irq_* notrace for paravirt\n tracing: Fix module use of trace_bprintk()\n" }, { "commit": "451a3c24b0135bce54542009b5fde43846c7cf67", "tree": "f0fbbcc155aef2a1ffcb8aa593fe7a966d0e6900", "parents": [ "55f6561c6941713ab5ae9180525b026dd40b7d14" ], "author": { "name": "Arnd Bergmann", "email": "arnd@arndb.de", "time": "Wed Nov 17 16:26:55 2010 +0100" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Wed Nov 17 08:59:32 2010 -0800" }, "message": "BKL: remove extraneous #include \u003csmp_lock.h\u003e\n\nThe big kernel lock has been removed from all these files at some point,\nleaving only the #include.\n\nRemove this too as a cleanup.\n\nSigned-off-by: Arnd Bergmann \u003carnd@arndb.de\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "91e86e560d0b3ce4c5fc64fd2bbb99f856a30a4e", "tree": "26d7afb8373474a4d44d0eba4130499676c35bc7", "parents": [ "b5908548537ccd3ada258ca5348df7ffc93e5a06" ], "author": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Wed Nov 10 12:56:12 2010 +0100" }, "committer": { "name": "Steven Rostedt", "email": "rostedt@goodmis.org", "time": "Fri Nov 12 21:20:08 2010 -0500" }, "message": "tracing: Fix recursive user stack trace\n\nThe user stack trace can fault when examining the trace. Which\nwould call the do_page_fault handler, which would trace again,\nwhich would do the user stack trace, which would fault and call\ndo_page_fault again ...\n\nThus this is causing a recursive bug. We need to have a recursion\ndetector here.\n\n[ Resubmitted by Jiri Olsa ]\n\n[ Eric Dumazet recommended using __this_cpu_* instead of __get_cpu_* ]\n\nCc: Eric Dumazet \u003ceric.dumazet@gmail.com\u003e\nSigned-off-by: Jiri Olsa \u003cjolsa@redhat.com\u003e\nLKML-Reference: \u003c1289390172-9730-3-git-send-email-jolsa@redhat.com\u003e\nSigned-off-by: Steven Rostedt \u003crostedt@goodmis.org\u003e\n" }, { "commit": "dd49a38cf30944be27892c10b1c0e5b3fa73bcb2", "tree": "6f517e3e643923556c92a647918984fc2ea36bb8", "parents": [ "750ed158bf6c782d2813da1bca2c824365a0b777" ], "author": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Wed Oct 20 21:51:26 2010 -0400" }, "committer": { "name": "Steven Rostedt", "email": "rostedt@goodmis.org", "time": "Thu Oct 21 08:55:06 2010 -0400" }, "message": "tracing: Do not limit the size of the number of CPU buffers\n\nThe tracing per_cpu buffers were limited to 999 CPUs for a mear\nsavings in stack space of a char array. Up the array to 30 characters\nwhich is more than enough to hold a 64 bit number.\n\nReported-by: Robin Holt \u003cholt@sgi.com\u003e\nSuggested-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Steven Rostedt \u003crostedt@goodmis.org\u003e\n" }, { "commit": "907f27840985fe6a0c62e43cd4702c6e04b4bcc7", "tree": "1023e32295a25e0602aef4bab14f41b97975f6bd", "parents": [ "f92f6e6ee35d2779aa62e70f78ad8e1cd417eb52" ], "author": { "name": "matt mooney", "email": "mfm@muteddisk.com", "time": "Mon Sep 27 19:04:53 2010 -0700" }, "committer": { "name": "Steven Rostedt", "email": "rostedt@goodmis.org", "time": "Mon Oct 18 10:53:22 2010 -0400" }, "message": "tracing/trivial: Remove cast from void*\n\nUnnecessary cast from void* in assignment.\n\nSigned-off-by: matt mooney \u003cmfm@muteddisk.com\u003e\nSigned-off-by: Steven Rostedt \u003crostedt@goodmis.org\u003e\n" }, { "commit": "d244b6bd41e09ecbb09c738cc2c108be227398c8", "tree": "848c6a8a0d6f83929daf43d63e241dc8072066ac", "parents": [ "da5cabf80e2433131bf0ed8993abc0f7ea618c73", "1aa54bca6ee0d07ebcafb8ca8074b624d80724aa" ], "author": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Mon Aug 16 11:17:30 2010 -0400" }, "committer": { "name": "Steven Rostedt", "email": "rostedt@goodmis.org", "time": "Mon Aug 16 11:17:30 2010 -0400" }, "message": "Merge branch \u0027tip/perf/urgent-3\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-2.6-trace into trace/tip/perf/urgent-4\n\nConflicts:\n\tkernel/trace/trace_events.c\n\nSigned-off-by: Steven Rostedt \u003crostedt@goodmis.org\u003e\n" }, { "commit": "1aa54bca6ee0d07ebcafb8ca8074b624d80724aa", "tree": "815f3c1d184b61958ee48eb868ed28b1e5aab278", "parents": [ "2a37a3df57c44e947271758a1aa4bea7bff9feab" ], "author": { "name": "Marcin Slusarz", "email": "marcin.slusarz@gmail.com", "time": "Wed Jul 28 01:18:01 2010 +0200" }, "committer": { "name": "Steven Rostedt", "email": "rostedt@goodmis.org", "time": "Fri Aug 13 15:23:16 2010 -0400" }, "message": "tracing: Sanitize value returned from write(trace_marker, \"...\", len)\n\nWhen userspace code writes non-new-line-terminated string to trace_marker\nfile, write handler appends new-line and returns number of bytes written\nto trace buffer, so\nwrite(fd, \"abc\", 3) will return 4\n\nThat\u0027s unexpected and unfortunately it confuses glibc\u0027s fprintf function.\n\nExample:\nint main() {\n fprintf(stderr, \"abc\");\n return 0;\n}\n\n$ gcc test.c -o test\n$ echo mmiotrace \u003e /sys/kernel/debug/tracing/current_tracer\n$ ./test 2\u003e/sys/kernel/debug/tracing/trace_marker\n\nresults in infinite loop:\nwrite(fd, \"abc\", 3) \u003d 4\nwrite(fd, \"\", 1) \u003d 0\nwrite(fd, \"\", 1) \u003d 0\nwrite(fd, \"\", 1) \u003d 0\nwrite(fd, \"\", 1) \u003d 0\nwrite(fd, \"\", 1) \u003d 0\nwrite(fd, \"\", 1) \u003d 0\nwrite(fd, \"\", 1) \u003d 0\n(...)\n\n...and kernel trace buffer full of empty markers.\n\nFix it by sanitizing write return value.\n\nSigned-off-by: Marcin Slusarz \u003cmarcin.slusarz@gmail.com\u003e\nLKML-Reference: \u003c20100727231801.GB2826@joi.lan\u003e\nCc: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\nCc: Ingo Molnar \u003cmingo@redhat.com\u003e\nSigned-off-by: Steven Rostedt \u003crostedt@goodmis.org\u003e\n" }, { "commit": "78417334b5cb6e1f915b8fdcc4fce3f1a1b4420c", "tree": "8e3fce9f27fd058904c0a3247a5c5ebb8df9fbe8", "parents": [ "cd816a0d84377c4e87f55cbe934a23417f9f5743", "5f202bd5ca64132cdd7f186656bc0221f257733d" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Sat Aug 07 17:06:54 2010 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Sat Aug 07 17:06:54 2010 -0700" }, "message": "Merge branch \u0027bkl/core\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/frederic/random-tracing\n\n* \u0027bkl/core\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/frederic/random-tracing:\n do_coredump: Do not take BKL\n init: Remove the BKL from startup code\n" }, { "commit": "4aed2fd8e3181fea7c09ba79cf64e7e3f4413bf9", "tree": "1f69733e5daab4915a76a41de0e4d1dc61e12cfb", "parents": [ "3a3527b6461b1298cc53ce72f336346739297ac8", "fc9ea5a1e53ee54f681e226d735008e2a6f8f470" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Fri Aug 06 09:30:52 2010 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Fri Aug 06 09:30:52 2010 -0700" }, "message": "Merge branch \u0027perf-core-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip\n\n* \u0027perf-core-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (162 commits)\n tracing/kprobes: unregister_trace_probe needs to be called under mutex\n perf: expose event__process function\n perf events: Fix mmap offset determination\n perf, powerpc: fsl_emb: Restore setting perf_sample_data.period\n perf, powerpc: Convert the FSL driver to use local64_t\n perf tools: Don\u0027t keep unreferenced maps when unmaps are detected\n perf session: Invalidate last_match when removing threads from rb_tree\n perf session: Free the ref_reloc_sym memory at the right place\n x86,mmiotrace: Add support for tracing STOS instruction\n perf, sched migration: Librarize task states and event headers helpers\n perf, sched migration: Librarize the GUI class\n perf, sched migration: Make the GUI class client agnostic\n perf, sched migration: Make it vertically scrollable\n perf, sched migration: Parameterize cpu height and spacing\n perf, sched migration: Fix key bindings\n perf, sched migration: Ignore unhandled task states\n perf, sched migration: Handle ignored migrate out events\n perf: New migration tool overview\n tracing: Drop cpparg() macro\n perf: Use tracepoint_synchronize_unregister() to flush any pending tracepoint call\n ...\n\nFix up trivial conflicts in Makefile and drivers/cpufreq/cpufreq.c\n" }, { "commit": "955b61e597984745fb7d34c75708f6503b6aaeab", "tree": "c928ca54a8231b0432e729d8b675e473a5db9104", "parents": [ "3f0a55e3579a500ce9f5cdab70a5741f99769118" ], "author": { "name": "Jason Wessel", "email": "jason.wessel@windriver.com", "time": "Thu Aug 05 09:22:23 2010 -0500" }, "committer": { "name": "Jason Wessel", "email": "jason.wessel@windriver.com", "time": "Thu Aug 05 09:22:23 2010 -0500" }, "message": "ftrace,kdb: Extend kdb to be able to dump the ftrace buffer\n\nAdd in a helper function to allow the kdb shell to dump the ftrace\nbuffer.\n\nModify trace.c to expose the capability to iterate over the ftrace\nbuffer in a read only capacity.\n\nSigned-off-by: Jason Wessel \u003cjason.wessel@windriver.com\u003e\nAcked-by: Steven Rostedt \u003crostedt@goodmis.org\u003e\nCC: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\n" }, { "commit": "3a01736e70a7d629140695ba46a901266b4460cc", "tree": "49ff8ce1e7c6a267f0ce84b5daddbe6666bc4253", "parents": [ "4c21adf26f8fcf86a755b9b9f55c2e9fd241e1fb", "24a461d537f49f9da6533d83100999ea08c6c755" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Fri Jul 23 09:10:29 2010 +0200" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Fri Jul 23 09:10:29 2010 +0200" }, "message": "Merge branch \u0027tip/perf/core\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-2.6-trace into perf/core\n" }, { "commit": "24a461d537f49f9da6533d83100999ea08c6c755", "tree": "b7aa6258df988a64d802eff0b15e92c394742a2e", "parents": [ "a484e54fae891703cbe1c9ec1b536605f11f5482" ], "author": { "name": "Dan Carpenter", "email": "error27@gmail.com", "time": "Sat Jul 10 12:06:44 2010 +0200" }, "committer": { "name": "Steven Rostedt", "email": "rostedt@goodmis.org", "time": "Thu Jul 22 14:56:41 2010 -0400" }, "message": "trace: strlen() return doesn\u0027t account for the NULL\n\nWe need to add one to the strlen() return because of the NULL\ncharacter. The type-\u003ename here generally comes from the kernel and I\ndon\u0027t think any of them come close to being MAX_TRACER_SIZE (100)\ncharacters long so this is basically a cleanup.\n\nSigned-off-by: Dan Carpenter \u003cerror27@gmail.com\u003e\nLKML-Reference: \u003c20100710100644.GV19184@bicker\u003e\nSigned-off-by: Steven Rostedt \u003crostedt@goodmis.org\u003e\n" }, { "commit": "ef710e100c1068d3dd5774d2b34c5485219e06ce", "tree": "ed295053a31de472d4ed4338679c00ac8e8437c7", "parents": [ "bc289ae98b75d93228d24f521ef02a076e506e94" ], "author": { "name": "KOSAKI Motohiro", "email": "kosaki.motohiro@jp.fujitsu.com", "time": "Thu Jul 01 14:34:35 2010 +0900" }, "committer": { "name": "Steven Rostedt", "email": "rostedt@goodmis.org", "time": "Wed Jul 21 10:20:17 2010 -0400" }, "message": "tracing: Shrink max latency ringbuffer if unnecessary\n\nDocumentation/trace/ftrace.txt says\n\n buffer_size_kb:\n\n This sets or displays the number of kilobytes each CPU\n buffer can hold. The tracer buffers are the same size\n for each CPU. The displayed number is the size of the\n CPU buffer and not total size of all buffers. The\n trace buffers are allocated in pages (blocks of memory\n that the kernel uses for allocation, usually 4 KB in size).\n If the last page allocated has room for more bytes\n than requested, the rest of the page will be used,\n making the actual allocation bigger than requested.\n ( Note, the size may not be a multiple of the page size\n due to buffer management overhead. )\n\n This can only be updated when the current_tracer\n is set to \"nop\".\n\nBut it\u0027s incorrect. currently total memory consumption is\n\u0027buffer_size_kb x CPUs x 2\u0027.\n\nWhy two times difference is there? because ftrace implicitly allocate\nthe buffer for max latency too.\n\nThat makes sad result when admin want to use large buffer. (If admin\nwant full logging and makes detail analysis). example, If admin\nhave 24 CPUs machine and write 200MB to buffer_size_kb, the system\nconsume ~10GB memory (200MB x 24 x 2). umm.. 5GB memory waste is\nusually unacceptable.\n\nFortunatelly, almost all users don\u0027t use max latency feature.\nThe max latency buffer can be disabled easily.\n\nThis patch shrink buffer size of the max latency buffer if\nunnecessary.\n\nSigned-off-by: KOSAKI Motohiro \u003ckosaki.motohiro@jp.fujitsu.com\u003e\nLKML-Reference: \u003c20100701104554.DA2D.A69D9226@jp.fujitsu.com\u003e\nSigned-off-by: Steven Rostedt \u003crostedt@goodmis.org\u003e\n" }, { "commit": "e870e9a1240bcef1157ffaaf71dac63362e71904", "tree": "b8f57a68ff45b35dab8cdfa474e17622d275bdc6", "parents": [ "cc5edb0eb9ce892b530e34a5d110382483587942" ], "author": { "name": "Li Zefan", "email": "lizf@cn.fujitsu.com", "time": "Fri Jul 02 11:07:32 2010 +0800" }, "committer": { "name": "Steven Rostedt", "email": "rostedt@goodmis.org", "time": "Tue Jul 20 21:52:33 2010 -0400" }, "message": "tracing: Allow to disable cmdline recording\n\nWe found that even enabling a single trace event that will rarely be\ntriggered can add big overhead to context switch.\n\n(lmbench context switch test)\n -------------------------------------------------\n 2p/0K 2p/16K 2p/64K 8p/16K 8p/64K 16p/16K 16p/64K\n ctxsw ctxsw ctxsw ctxsw ctxsw ctxsw ctxsw\n------ ------ ------ ------ ------ ------- -------\n 2.19 2.3 2.21 2.56 2.13 2.54 2.07\n 2.39 2.51 2.35 2.75 2.27 2.81 2.24\n\nThe overhead is 6% ~ 11%.\n\nIt\u0027s because when a trace event is enabled 3 tracepoints (sched_switch,\nsched_wakeup, sched_wakeup_new) will be activated to map pid to cmdname.\n\nWe\u0027d like to avoid this overhead, so add a trace option \u0027(no)record-cmd\u0027\nto allow to disable cmdline recording.\n\nSigned-off-by: Li Zefan \u003clizf@cn.fujitsu.com\u003e\nLKML-Reference: \u003c4C2D57F4.2050204@cn.fujitsu.com\u003e\nSigned-off-by: Steven Rostedt \u003crostedt@goodmis.org\u003e\n" }, { "commit": "b444786f1a797a7f84e2561346a670649f9c7b3c", "tree": "42260d0930addbe623d952fff75e0fba7f63d6c6", "parents": [ "eb7beb5c09af75494234ea6acd09d0a647cf7338" ], "author": { "name": "Arnd Bergmann", "email": "arnd@arndb.de", "time": "Wed Jul 07 23:40:11 2010 +0200" }, "committer": { "name": "Frederic Weisbecker", "email": "fweisbec@gmail.com", "time": "Tue Jul 20 14:31:24 2010 +0200" }, "message": "tracing: Use generic_file_llseek for debugfs\n\nThe default for llseek will change to no_llseek,\nso the tracing debugfs files need to add explicit\n.llseek assignments. Since we\u0027re dealing with regular\nfiles from a VFS perspective, use generic_file_llseek.\n\nSigned-off-by: Arnd Bergmann \u003carnd@arndb.de\u003e\nCc: Steven Rostedt \u003crostedt@goodmis.org\u003e\nCc: Ingo Molnar \u003cmingo@elte.hu\u003e\nCc: John Kacur \u003cjkacur@redhat.com\u003e\nCc: Li Zefan \u003clizf@cn.fujitsu.com\u003e\nLKML-Reference: \u003c1278538820-1392-10-git-send-email-arnd@arndb.de\u003e\nSigned-off-by: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\n" }, { "commit": "eb7beb5c09af75494234ea6acd09d0a647cf7338", "tree": "ab76cb3a6c1f1ea9befbbc72d0f997c03423dd57", "parents": [ "f376bf5ffbad863d4bc3b2586b7e34cdf756ad17" ], "author": { "name": "Frederic Weisbecker", "email": "fweisbec@gmail.com", "time": "Fri Jul 16 00:50:03 2010 +0200" }, "committer": { "name": "Frederic Weisbecker", "email": "fweisbec@gmail.com", "time": "Tue Jul 20 14:31:07 2010 +0200" }, "message": "tracing: Remove special traces\n\nSpecial traces type was only used by sysprof. Lets remove it now\nthat sysprof ftrace plugin has been dropped.\n\nSigned-off-by: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\nAcked-by: Soeren Sandmann \u003csandmann@daimi.au.dk\u003e\nCc: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nCc: Ingo Molnar \u003cmingo@elte.hu\u003e\nCc: Steven Rostedt \u003crostedt@goodmis.org\u003e\nCc: Li Zefan \u003clizf@cn.fujitsu.com\u003e\n" }, { "commit": "f376bf5ffbad863d4bc3b2586b7e34cdf756ad17", "tree": "712a78b2b455995ceb4e12b5ae02df76dc07f01e", "parents": [ "cc5edb0eb9ce892b530e34a5d110382483587942" ], "author": { "name": "Frederic Weisbecker", "email": "fweisbec@gmail.com", "time": "Fri Jul 16 00:26:26 2010 +0200" }, "committer": { "name": "Frederic Weisbecker", "email": "fweisbec@gmail.com", "time": "Tue Jul 20 14:29:46 2010 +0200" }, "message": "tracing: Remove sysprof ftrace plugin\n\nThe sysprof ftrace plugin doesn\u0027t seem to be seriously used\nsomewhere. There is a branch in the sysprof tree that makes\nan interface to it, but the real sysprof tool uses either its\nown module or perf events.\n\nDrop the sysprof ftrace plugin then, as it\u0027s mostly useless.\n\nSigned-off-by: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\nAcked-by: Soeren Sandmann \u003csandmann@daimi.au.dk\u003e\nCc: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nCc: Ingo Molnar \u003cmingo@elte.hu\u003e\nCc: Steven Rostedt \u003crostedt@goodmis.org\u003e\nCc: Li Zefan \u003clizf@cn.fujitsu.com\u003e\n" }, { "commit": "5e3d20a68f63fc5a310687d81956c3b96e488b84", "tree": "576da563442772fe7a492589c1e08c422ff02b1c", "parents": [ "815c4163b6c8ebf8152f42b0a5fd015cfdcedc78" ], "author": { "name": "Arnd Bergmann", "email": "arnd@arndb.de", "time": "Sun Jul 04 00:02:26 2010 +0200" }, "committer": { "name": "Frederic Weisbecker", "email": "fweisbec@gmail.com", "time": "Fri Jul 09 15:40:32 2010 +0200" }, "message": "init: Remove the BKL from startup code\n\nI have shown by code review that no driver takes\nthe BKL at init time any more, so whatever the\ninit code was locking against is no longer there\nand it is now safe to remove the BKL there.\n\nSigned-off-by: Arnd Bergmann \u003carnd@arndb.de\u003e\nAcked-by: Steven Rostedt \u003crostedt@goodmis\u003e\nSigned-off-by: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\n" }, { "commit": "c726b61c6a5acc54c55ed7a0e7638cc4c5a100a8", "tree": "3f44aa013d31d34951e9610e79ff14c1148ad6ac", "parents": [ "7be7923633a142402266d642ccebf74f556a649b", "018378c55b03f88ff513aba4e0e93b8d4a9cf241" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Wed Jun 09 18:55:20 2010 +0200" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Wed Jun 09 18:55:57 2010 +0200" }, "message": "Merge branch \u0027perf/core\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/frederic/random-tracing into perf/core\n" }, { "commit": "30dbb20e68e6f7df974b77d2350ebad5eb6f6c9e", "tree": "b28f8232756e0de57ded858d6584724317b405ef", "parents": [ "b0f82b81fe6bbcf78d478071f33e44554726bc81" ], "author": { "name": "Américo Wang", "email": "xiyou.wangcong@gmail.com", "time": "Wed May 26 18:57:53 2010 +0800" }, "committer": { "name": "Frederic Weisbecker", "email": "fweisbec@gmail.com", "time": "Tue Jun 08 23:31:28 2010 +0200" }, "message": "tracing: Remove boot tracer\n\nThe boot tracer is useless. It simply logs the initcalls\nbut in fact these initcalls are also logged through printk\nwhile using the initcall_debug kernel parameter.\n\nNobody seem to be using it so far. Then just remove it.\n\nSigned-off-by: WANG Cong \u003cxiyou.wangcong@gmail.com\u003e\nCc: Chase Douglas \u003cchase.douglas@canonical.com\u003e\nCc: Steven Rostedt \u003crostedt@goodmis.org\u003e\nCc: Ingo Molnar \u003cmingo@elte.hu\u003e\nCc: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nCc: Li Zefan \u003clizf@cn.fujitsu.com\u003e\nLKML-Reference: \u003c20100526105753.GA5677@cr0.nay.redhat.com\u003e\n[ remove the hooks in main.c, and the headers ]\nSigned-off-by: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\n" }, { "commit": "6113e45f831616de98c54a005260223b21bcb6b9", "tree": "0d56dbfae392f89b33c2ae6a36a5cc1ea1c1c988", "parents": [ "84bb671dc46d77d665d2b5e74539e81b2129bb3e", "5168ae50a66e3ff7184c2b16d661bd6d70367e50" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Tue Jun 08 19:34:40 2010 +0200" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Tue Jun 08 19:34:40 2010 +0200" }, "message": "Merge branch \u0027tip/perf/core-3\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-2.6-trace into perf/core\n" }, { "commit": "5168ae50a66e3ff7184c2b16d661bd6d70367e50", "tree": "2fb21fc3bd346e4f589605d940dfb1bacac30bf5", "parents": [ "d1f74e20b5b064a130cd0743a256c2d3cfe84010" ], "author": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Thu Jun 03 09:36:50 2010 -0400" }, "committer": { "name": "Steven Rostedt", "email": "rostedt@goodmis.org", "time": "Thu Jun 03 19:32:38 2010 -0400" }, "message": "tracing: Remove ftrace_preempt_disable/enable\n\nThe ftrace_preempt_disable/enable functions were to address a\nrecursive race caused by the function tracer. The function tracer\ntraces all functions which makes it easily susceptible to recursion.\nOne area was preempt_enable(). This would call the scheduler and\nthe schedulre would call the function tracer and loop.\n(So was it thought).\n\nThe ftrace_preempt_disable/enable was made to protect against recursion\ninside the scheduler by storing the NEED_RESCHED flag. If it was\nset before the ftrace_preempt_disable() it would not call schedule\non ftrace_preempt_enable(), thinking that if it was set before then\nit would have already scheduled unless it was already in the scheduler.\n\nThis worked fine except in the case of SMP, where another task would set\nthe NEED_RESCHED flag for a task on another CPU, and then kick off an\nIPI to trigger it. This could cause the NEED_RESCHED to be saved at\nftrace_preempt_disable() but the IPI to arrive in the the preempt\ndisabled section. The ftrace_preempt_enable() would not call the scheduler\nbecause the flag was already set before entring the section.\n\nThis bug would cause a missed preemption check and cause lower latencies.\n\nInvestigating further, I found that the recusion caused by the function\ntracer was not due to schedule(), but due to preempt_schedule(). Now\nthat preempt_schedule is completely annotated with notrace, the recusion\nno longer is an issue.\n\nReported-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\nSigned-off-by: Steven Rostedt \u003crostedt@goodmis.org\u003e\n" }, { "commit": "bc7d352c5e76c74c628a39b99777a1bdddde5e81", "tree": "3cc0a80defb54d284e2a9a1e69b1224064921775", "parents": [ "b3f2f6cd1ff935ecac9a5346904b899d7af689fe", "92af1abde4f2d74c9e5f7b670a1971779ed0b051" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Sun May 30 12:35:01 2010 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Sun May 30 12:35:01 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 perf tui: Fix last use_browser problem related to .perfconfig\n perf symbols: Add the build id cache to the vmlinux path\n perf tui: Reset use_browser if stdout is not a tty\n ring-buffer: Move zeroing out excess in page to ring buffer code\n ring-buffer: Reset \"real_end\" when page is filled\n" }, { "commit": "c5617b200ac52e35f7e8cf05a17b0a2d50f6b3e9", "tree": "40d5e99660c77c5791392d349a93113c044dbf14", "parents": [ "cad719d86e9dbd06634eaba6401e022c8101d6b2", "49c177461bfbedeccbab22bf3905db2f9da7f1c3" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu May 27 15:23:47 2010 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu May 27 15:23:47 2010 -0700" }, "message": "Merge branch \u0027perf-core-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip\n\n* \u0027perf-core-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (61 commits)\n tracing: Add __used annotation to event variable\n perf, trace: Fix !x86 build bug\n perf report: Support multiple events on the TUI\n perf annotate: Fix up usage of the build id cache\n x86/mmiotrace: Remove redundant instruction prefix checks\n perf annotate: Add TUI interface\n perf tui: Remove annotate from popup menu after failure\n perf report: Don\u0027t start the TUI if -D is used\n perf: Fix getline undeclared\n perf: Optimize perf_tp_event_match()\n perf: Remove more code from the fastpath\n perf: Optimize the !vmalloc backed buffer\n perf: Optimize perf_output_copy()\n perf: Fix wakeup storm for RO mmap()s\n perf-record: Share per-cpu buffers\n perf-record: Remove -M\n perf: Ensure that IOC_OUTPUT isn\u0027t used to create multi-writer buffers\n perf, trace: Optimize tracepoints by using per-tracepoint-per-cpu hlist to track events\n perf, trace: Optimize tracepoints by removing IRQ-disable from perf/tracepoint interaction\n perf tui: Allow disabling the TUI on a per command basis in ~/.perfconfig\n ...\n" }, { "commit": "2711ca237a084286ea1c2dcf82ab2aadab23a00d", "tree": "a795fa0e31e8557befd803153a33827b1d0c8764", "parents": [ "b3230c8b44da5838cf396942d5c1ab19f8e8f720" ], "author": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Fri May 21 13:32:26 2010 -0400" }, "committer": { "name": "Steven Rostedt", "email": "rostedt@goodmis.org", "time": "Tue May 25 11:57:26 2010 -0400" }, "message": "ring-buffer: Move zeroing out excess in page to ring buffer code\n\nCurrently the trace splice code zeros out the excess bytes in the page before\nsending it off to userspace.\n\nThis is to make sure userspace is not getting anything it should not be\nwhen reading the pages, because the excess data was never initialized\nto zero before writing (for perfomance reasons).\n\nBut the splice code has no business in doing this work, it should be\ndone by the ring buffer. With the latest changes for recording lost\nevents, the splice code gets it wrong anyway.\n\nMove the zeroing out of excess bytes into the ring buffer code.\n\nSigned-off-by: Steven Rostedt \u003crostedt@goodmis.org\u003e\n" }, { "commit": "ee9a3607fb03e804ddf624544105f4e34260c380", "tree": "ce41b6e0fa10982a306f6c142a92dbf3c9961284", "parents": [ "b492e95be0ae672922f4734acf3f5d35c30be948", "d515e86e639890b33a09390d062b0831664f04a2" ], "author": { "name": "Jens Axboe", "email": "jens.axboe@oracle.com", "time": "Fri May 21 21:27:26 2010 +0200" }, "committer": { "name": "Jens Axboe", "email": "jens.axboe@oracle.com", "time": "Fri May 21 21:27:26 2010 +0200" }, "message": "Merge branch \u0027master\u0027 into for-2.6.35\n\nConflicts:\n\tfs/ext3/fsync.c\n\nSigned-off-by: Jens Axboe \u003cjens.axboe@oracle.com\u003e\n" }, { "commit": "35f3d14dbbc58447c61e38a162ea10add6b31dc7", "tree": "3e03cd540b7dcdac82195c4e76862c0ce6daaaf0", "parents": [ "3d42b3612891baecf709d93f28655a6882a65d41" ], "author": { "name": "Jens Axboe", "email": "jens.axboe@oracle.com", "time": "Thu May 20 10:43:18 2010 +0200" }, "committer": { "name": "Jens Axboe", "email": "jens.axboe@oracle.com", "time": "Fri May 21 21:12:40 2010 +0200" }, "message": "pipe: add support for shrinking and growing pipes\n\nThis patch adds F_GETPIPE_SZ and F_SETPIPE_SZ fcntl() actions for\ngrowing and shrinking the size of a pipe and adjusts pipe.c and splice.c\n(and relay and network splice) usage to work with these larger (or smaller)\npipes.\n\nSigned-off-by: Jens Axboe \u003cjens.axboe@oracle.com\u003e\n" }, { "commit": "a9a5776380208a3e48a92d0c763ee1a3b486fb73", "tree": "5ecd41c3b373e2156f5bf748ae777e022296a30c", "parents": [ "0405ab80aa94afb13bf9ac4a6fc9f2923d4b9114" ], "author": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Thu Apr 22 18:46:14 2010 -0400" }, "committer": { "name": "Steven Rostedt", "email": "rostedt@goodmis.org", "time": "Fri May 14 14:20:32 2010 -0400" }, "message": "tracing: Allow events to share their print functions\n\nMultiple events may use the same method to print their data.\nInstead of having all events have a pointer to their print funtions,\nthe trace_event structure now points to a trace_event_functions structure\nthat will hold the way to print ouf the event.\n\nThe event itself is now passed to the print function to let the print\nfunction know what kind of event it should print.\n\nThis opens the door to consolidating the way several events print\ntheir output.\n\n text\t data\t bss\t dec\t hex\tfilename\n4913961\t1088356\t 861512\t6863829\t 68bbd5\tvmlinux.orig\n4900382\t1048964\t 861512\t6810858\t 67ecea\tvmlinux.init\n4900446\t1049028\t 861512\t6810986\t 67ed6a\tvmlinux.preprint\n\nThis change slightly increases the size but is needed for the next change.\n\nv3: Fix the branch tracer events to handle this change.\n\nv2: Fix the new function graph tracer event calls to handle this change.\n\nAcked-by: Mathieu Desnoyers \u003cmathieu.desnoyers@efficios.com\u003e\nAcked-by: Masami Hiramatsu \u003cmhiramat@redhat.com\u003e\nAcked-by: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\nSigned-off-by: Steven Rostedt \u003crostedt@goodmis.org\u003e\n" } ], "next": "72c9ddfd4c5bf54ef03cfdf57026416cb678eeba" }