)]}' { "log": [ { "commit": "246750ffa1b26335df4e485b4e4d28d83756ac43", "tree": "8c28306f1b66bd89713c9dfe8738097d56056d06", "parents": [ "4660d3d240ac6c92cd3ad33657ca302026bdc24b", "570b8fb505896e007fd3bb07573ba6640e51851d" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Mar 30 07:26:30 2010 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Mar 30 07:26:30 2010 -0700" }, "message": "Merge branch \u0027for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/security-testing-2.6\n\n* \u0027for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/security-testing-2.6:\n CRED: Fix memory leak in error handling\n" }, { "commit": "be3fd3cc7c2142c46d5dcfec05e6031990d1f2ca", "tree": "606074b5c60ef823ad86174e408904c563eab38d", "parents": [ "9623e5a23724d09283c238960946ec6f65733afe", "eed63519e3e74d515d2007ecd895338d0ba2a85c" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Mar 30 07:22:38 2010 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Mar 30 07:22:38 2010 -0700" }, "message": "Merge branch \u0027x86-fixes-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip\n\n* \u0027x86-fixes-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:\n x86: Do not free zero sized per cpu areas\n x86: Make sure free_init_pages() frees pages on page boundary\n x86: Make smp_locks end with page alignment\n" }, { "commit": "570b8fb505896e007fd3bb07573ba6640e51851d", "tree": "fd36f685aa2028628605733708bbf7d1af62f3ec", "parents": [ "9623e5a23724d09283c238960946ec6f65733afe" ], "author": { "name": "Mathieu Desnoyers", "email": "mathieu.desnoyers@efficios.com", "time": "Tue Mar 30 00:04:00 2010 +0100" }, "committer": { "name": "James Morris", "email": "jmorris@namei.org", "time": "Tue Mar 30 17:15:38 2010 +1100" }, "message": "CRED: Fix memory leak in error handling\n\nFix a memory leak on an OOM condition in prepare_usermodehelper_creds().\n\nSigned-off-by: Mathieu Desnoyers \u003cmathieu.desnoyers@efficios.com\u003e\nSigned-off-by: David Howells \u003cdhowells@redhat.com\u003e\nSigned-off-by: James Morris \u003cjmorris@namei.org\u003e\n" }, { "commit": "eed63519e3e74d515d2007ecd895338d0ba2a85c", "tree": "4b33f284ab39080293b287316d18745c770058e2", "parents": [ "c967da6a0ba837f762042e931d4afcf72045547c" ], "author": { "name": "Ian Campbell", "email": "ian.campbell@citrix.com", "time": "Sun Mar 28 19:42:56 2010 -0700" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon Mar 29 18:55:40 2010 +0200" }, "message": "x86: Do not free zero sized per cpu areas\n\nThis avoids an infinite loop in free_early_partial().\n\nAdd a warning to free_early_partial() to catch future problems.\n\n-v5: put back start \u003e end back into WARN_ONCE()\n-v6: use one line for warning, suggested by Linus\n-v7: more tests\n-v8: remove the function name as suggested by Johannes\n WARN_ONCE() will print out that function name.\n\nSigned-off-by: Ian Campbell \u003cian.campbell@citrix.com\u003e\nSigned-off-by: Yinghai Lu \u003cyinghai@kernel.org\u003e\nTested-by: Konrad Rzeszutek Wilk \u003ckonrad.wilk@oracle.com\u003e\nTested-by: Joel Becker \u003cjoel.becker@oracle.com\u003e\nTested-by: Stanislaw Gruszka \u003csgruszka@redhat.com\u003e\nAcked-by: Johannes Weiner \u003channes@cmpxchg.org\u003e\nCc: Peter Zijlstra \u003cpeterz@infradead.org\u003e\nCc: David Miller \u003cdavem@davemloft.net\u003e\nCc: Benjamin Herrenschmidt \u003cbenh@kernel.crashing.org\u003e\nCc: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\nLKML-Reference: \u003c1269830604-26214-4-git-send-email-yinghai@kernel.org\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "a53f4f9efaeb1d87cfae066346979d4d70e1abe9", "tree": "d774e3c010b96bc71226d5aedd1df04462629db5", "parents": [ "88be12c440cfa2fa3f5be83507360aac9ea1c54e" ], "author": { "name": "David Howells", "email": "dhowells@redhat.com", "time": "Mon Mar 29 13:08:52 2010 +0100" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Mon Mar 29 09:14:47 2010 -0700" }, "message": "SLOW_WORK: CONFIG_SLOW_WORK_PROC should be CONFIG_SLOW_WORK_DEBUG\n\nCONFIG_SLOW_WORK_PROC was changed to CONFIG_SLOW_WORK_DEBUG, but not in all\ninstances. Change the remaining instances. This makes the debugfs file\ndisplay the time mark and the owner\u0027s description again.\n\nSigned-off-by: David Howells \u003cdhowells@redhat.com\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "88be12c440cfa2fa3f5be83507360aac9ea1c54e", "tree": "ec8593b4f626debde062eda917355afc35573684", "parents": [ "376a21ff42ba71167afe7a47aeb1ca19470cf580" ], "author": { "name": "Dave Airlie", "email": "airlied@redhat.com", "time": "Mon Mar 29 12:01:50 2010 +0100" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Mon Mar 29 09:13:30 2010 -0700" }, "message": "slow-work: use get_ref wrapper instead of directly calling get_ref\n\nOtherwise we can get an oops if the user has no get_ref/put_ref\nrequirement.\n\nSigned-off-by: Dave Airlie \u003cairlied@redhat.com\u003e\nSigned-off-by: David Howells \u003cdhowells@redhat.com\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "b72c40949b0f04728f2993a1434598d3bad094ea", "tree": "612b99ceac1f713d15cb288d370578e138537e49", "parents": [ "e4d50423d773fb8d5b714430ba5358e8a1b87c14", "d558b483d5a73f5718705b270cb2090f66ea48c8" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Fri Mar 26 16:34:29 2010 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Fri Mar 26 16:34:29 2010 -0700" }, "message": "Merge branch \u0027for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6\n\n* \u0027for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6:\n x86/PCI: truncate _CRS windows with _LEN \u003e _MAX - _MIN + 1\n x86/PCI: for host bridge address space collisions, show conflicting resource\n frv/PCI: remove redundant warnings\n x86/PCI: remove redundant warnings\n PCI: don\u0027t say we claimed a resource if we failed\n PCI quirk: Disable MSI on VIA K8T890 systems\n PCI quirk: RS780/RS880: work around missing MSI initialization\n PCI quirk: only apply CX700 PCI bus parking quirk if external VT6212L is present\n PCI: complain about devices that seem to be broken\n PCI: print resources consistently with %pR\n PCI: make disabled window printk style match the enabled ones\n PCI: break out primary/secondary/subordinate for readability\n PCI: for address space collisions, show conflicting resource\n resources: add interfaces that return conflict information\n PCI: cleanup error return for pcix get and set mmrbc functions\n PCI: fix access of PCI_X_CMD by pcix get and set mmrbc functions\n PCI: kill off pci_register_set_vga_state() symbol export.\n PCI: fix return value from pcix_get_max_mmrbc()\n" }, { "commit": "054319b5e255c0671012a5a89b344a7d55cda80c", "tree": "5f815e837eacb11504f19c00e155befcecdf0903", "parents": [ "833961d81f0ece46b7884f988cc65509e2c49646", "830ec0458c390f29c6c99e1ff7feab9e36368d12" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Fri Mar 26 15:10:38 2010 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Fri Mar 26 15:10:38 2010 -0700" }, "message": "Merge branch \u0027timers-fixes-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip\n\n* \u0027timers-fixes-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:\n time: Fix accumulation bug triggered by long delay.\n posix-cpu-timers: Reset expire cache when no timer is running\n timer stats: Fix del_timer_sync() and try_to_del_timer_sync()\n clockevents: Sanitize min_delta_ns adjustment and prevent overflows\n" }, { "commit": "833961d81f0ece46b7884f988cc65509e2c49646", "tree": "4c4bef2e8ec7d8510de827d83010b0fe76c4924f", "parents": [ "3cacf42462c8c97e045a07a5fc92aa357489c8b5", "2271048d1b3b0aabf83d25b29c20646dcabedc05" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Fri Mar 26 15:10:13 2010 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Fri Mar 26 15:10:13 2010 -0700" }, "message": "Merge branch \u0027tracing-fixes-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip\n\n* \u0027tracing-fixes-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:\n ring-buffer: Do 8 byte alignment for 64 bit that can not handle 4 byte align\n" }, { "commit": "3cacf42462c8c97e045a07a5fc92aa357489c8b5", "tree": "32ed28929899a93c2a3cf9ba5d051d01ed798a7d", "parents": [ "6fa41366c1c5e8b9640baba22d2b90ec9035a889", "8bc037fb89bb3104b9ae290d18c877624cd7d9cc" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Fri Mar 26 15:09:59 2010 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Fri Mar 26 15:09:59 2010 -0700" }, "message": "Merge branch \u0027sched-fixes-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip\n\n* \u0027sched-fixes-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:\n sched: Use proper type in sched_getaffinity()\n kernel/sched.c: Suppress unused var warning\n sched: sched_getaffinity(): Allow less than NR_CPUS length\n" }, { "commit": "309d1dcb5b73ab1f8212aff3037a7bcb46afe819", "tree": "af8ccaeb98051504db8f44a32f56945382f67271", "parents": [ "8128f55a0bc60cf3779135a1f837c4323e77c582", "860652bfb890bd861c999ec39fcffabe5b712f85" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Fri Mar 26 15:09:06 2010 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Fri Mar 26 15:09:06 2010 -0700" }, "message": "Merge branch \u0027irq-fixes-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip\n\n* \u0027irq-fixes-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:\n genirq: Move two IRQ functions from .init.text to .text\n genirq: Protect access to irq_desc-\u003eaction in can_request_irq()\n genirq: Prevent oneshot irq thread race\n" }, { "commit": "8128f55a0bc60cf3779135a1f837c4323e77c582", "tree": "a6f23d18496049651617f5c5cbe21648fa521f4e", "parents": [ "50da56706b989b99edb20f9c03172df193240c78", "c26f91a3df1999ec1b3298372d73f90cbab81106" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Fri Mar 26 15:08:31 2010 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Fri Mar 26 15:08:31 2010 -0700" }, "message": "Merge branch \u0027core-fixes-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip\n\n* \u0027core-fixes-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:\n x86: Remove excessive early_res debug output\n softlockup: Stop spurious softlockup messages due to overflow\n rcu: Fix local_irq_disable() CONFIG_PROVE_RCU\u003dy false positives\n rcu: Fix tracepoints \u0026 lockdep false positive\n rcu: Make rcu_read_lock_bh_held() allow for disabled BH\n" }, { "commit": "53feb29767c29c877f9d47dcfe14211b5b0f7ebd", "tree": "0416744ece6b7fd667bef355434ed9157fe67b2a", "parents": [ "5ab116c9349ef52d6fbd2e2917a53f13194b048e" ], "author": { "name": "Miao Xie", "email": "miaox@cn.fujitsu.com", "time": "Tue Mar 23 13:35:35 2010 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Wed Mar 24 16:31:21 2010 -0700" }, "message": "cpuset: alloc nodemask_t on the heap rather than the stack\n\nSigned-off-by: Miao Xie \u003cmiaox@cn.fujitsu.com\u003e\nAcked-by: David Rientjes \u003crientjes@google.com\u003e\nCc: Nick Piggin \u003cnpiggin@suse.de\u003e\nCc: Paul Menage \u003cmenage@google.com\u003e\nCc: Li Zefan \u003clizf@cn.fujitsu.com\u003e\nCc: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "5ab116c9349ef52d6fbd2e2917a53f13194b048e", "tree": "636a6cf02d5ca47c6da5d4935b07ddf08666a09c", "parents": [ "5574169613b40b85d6f4c67208fa4846b897a0a1" ], "author": { "name": "Miao Xie", "email": "miaox@cn.fujitsu.com", "time": "Tue Mar 23 13:35:34 2010 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Wed Mar 24 16:31:21 2010 -0700" }, "message": "cpuset: fix the problem that cpuset_mem_spread_node() returns an offline node\n\ncpuset_mem_spread_node() returns an offline node, and causes an oops.\n\nThis patch fixes it by initializing task-\u003emems_allowed to\nnode_states[N_HIGH_MEMORY], and updating task-\u003emems_allowed when doing\nmemory hotplug.\n\nSigned-off-by: Miao Xie \u003cmiaox@cn.fujitsu.com\u003e\nAcked-by: David Rientjes \u003crientjes@google.com\u003e\nReported-by: Nick Piggin \u003cnpiggin@suse.de\u003e\nTested-by: Nick Piggin \u003cnpiggin@suse.de\u003e\nCc: Paul Menage \u003cmenage@google.com\u003e\nCc: Li Zefan \u003clizf@cn.fujitsu.com\u003e\nCc: Ingo Molnar \u003cmingo@elte.hu\u003e\nCc: \u003cstable@kernel.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "9d34706f42f9b8c15185423d9af98d37ba21d011", "tree": "beee69581a5deec172854fcc9517dfa42602e73b", "parents": [ "5cfb80a73b5a52fb19d8b0611203e4dd58e8e9a2" ], "author": { "name": "Li Zefan", "email": "lizf@cn.fujitsu.com", "time": "Tue Mar 23 13:35:12 2010 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Wed Mar 24 16:31:19 2010 -0700" }, "message": "cgroups: remove duplicate include\n\ncommit e6a1105b (\"cgroups: subsystem module loading interface\") and commit\nc50cc752 (\"sched, cgroups: Fix module export\") result in duplicate\nincluding of module.h\n\nSigned-off-by: Li Zefan \u003clizf@cn.fujitsu.com\u003e\nAcked-by: Paul Menage \u003cmenage@google.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "860652bfb890bd861c999ec39fcffabe5b712f85", "tree": "9a266245973217e00533039d7aa707bf09b09e55", "parents": [ "cc8c3b78433222e5dbc1fdfcfdde29e1743f181a" ], "author": { "name": "Henrik Kretzschmar", "email": "henne@nachtwindheim.de", "time": "Wed Mar 24 12:59:20 2010 +0100" }, "committer": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Wed Mar 24 14:38:23 2010 +0100" }, "message": "genirq: Move two IRQ functions from .init.text to .text\n\nBoth functions should not be marked as __init, since they be called\nfrom modules after the init section is freed.\n\nSigned-off-by: Henrik Kretzschmar \u003chenne@nachtwindheim.de\u003e\nCc: Yinghai Lu \u003cyinghai@kernel.org\u003e\nCc: Peter Zijlstra \u003cpeterz@infradead.org\u003e\nCc: Jiri Kosina \u003cjkosina@suse.cz\u003e\nLKML-Reference: \u003c1269431961-5731-1-git-send-email-henne@nachtwindheim.de\u003e\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\n" }, { "commit": "cc8c3b78433222e5dbc1fdfcfdde29e1743f181a", "tree": "7efe13d87d7d92b1ff409455e65c85129bc30121", "parents": [ "0b1adaa031a55e44f5dd942f234bf09d28e8a0d6" ], "author": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Tue Mar 23 22:40:53 2010 +0100" }, "committer": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Wed Mar 24 14:38:23 2010 +0100" }, "message": "genirq: Protect access to irq_desc-\u003eaction in can_request_irq()\n\ncan_request_irq() accesses and dereferences irq_desc-\u003eaction w/o\nholding irq_desc-\u003elock. So action can be freed on another CPU before\nit\u0027s dereferenced. Unlikely, but ...\n\nProtect it with desc-\u003elock.\n\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\n" }, { "commit": "66f1207bce10fd80ee8ce99b67d617644612f05e", "tree": "3031bb74dce8c54af69dcd4aa7e566f40a5511ce", "parents": [ "7c9e2b1c4784c6e574f69dbd904b2822f2e04d6e" ], "author": { "name": "Bjorn Helgaas", "email": "bjorn.helgaas@hp.com", "time": "Thu Mar 11 17:01:09 2010 -0700" }, "committer": { "name": "Jesse Barnes", "email": "jbarnes@virtuousgeek.org", "time": "Tue Mar 23 13:33:50 2010 -0700" }, "message": "resources: add interfaces that return conflict information\n\nrequest_resource() and insert_resource() only return success or failure,\nwhich no information about what existing resource conflicted with the\nproposed new reservation. This patch adds request_resource_conflict()\nand insert_resource_conflict(), which return the conflicting resource.\n\nCallers may use this for better error messages or to adjust the new\nresource and retry the request.\n\nSigned-off-by: Bjorn Helgaas \u003cbjorn.helgaas@hp.com\u003e\nSigned-off-by: Jesse Barnes \u003cjbarnes@virtuousgeek.org\u003e\n" }, { "commit": "830ec0458c390f29c6c99e1ff7feab9e36368d12", "tree": "81a344892bd7696a42d87b76189b59f4e1af71ef", "parents": [ "15365c108ea27598e265f8c13e7051d99ca5b0b9" ], "author": { "name": "John Stultz", "email": "johnstul@us.ibm.com", "time": "Thu Mar 18 14:47:30 2010 -0700" }, "committer": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Tue Mar 23 16:41:01 2010 +0100" }, "message": "time: Fix accumulation bug triggered by long delay.\n\nThe logarithmic accumulation done in the timekeeping has some overflow\nprotection that limits the max shift value. That means it will take\nmore then shift loops to accumulate all of the cycles. This causes\nthe shift decrement to underflow, which causes the loop to never exit.\n\nThe simplest fix would be simply to do a:\n\tif (shift)\n\t\tshift--;\n\nHowever that is not optimal, as we know the cycle offset is larger\nthen the interval \u003c\u003c shift, the above would make shift drop to zero,\nthen we would be spinning for quite awhile accumulating at interval\nchunks at a time.\n\nInstead, this patch only decreases shift if the offset is smaller\nthen cycle_interval \u003c\u003c shift. This makes sure we accumulate using\nthe largest chunks possible without overflowing tick_length, and limits\nthe number of iterations through the loop.\n\nThis issue was found and reported by Sonic Zhang, who also tested the fix.\nMany thanks your explanation and testing!\n\nReported-by: Sonic Zhang \u003csonic.adi@gmail.com\u003e\nSigned-off-by: John Stultz \u003cjohnstul@us.ibm.com\u003e\nTested-by: Sonic Zhang \u003csonic.adi@gmail.com\u003e\nLKML-Reference: \u003c1268948850-5225-1-git-send-email-johnstul@us.ibm.com\u003e\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\n" }, { "commit": "8c2eb4805d422bdbf60ba00ff233c794d23c3c00", "tree": "add5be0a86cb9453d7d8c6d08847013137a98806", "parents": [ "0cff810f54b3b52075c27f7a7021d5b195264b6c" ], "author": { "name": "Colin Ian King", "email": "colin.king@canonical.com", "time": "Fri Mar 19 10:28:02 2010 +0000" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Sun Mar 21 19:30:13 2010 +0100" }, "message": "softlockup: Stop spurious softlockup messages due to overflow\n\nEnsure additions on touch_ts do not overflow. This can occur\nwhen the top 32 bits of the TSC reach 0xffffffff causing\nadditions to touch_ts to overflow and this in turn generates\nspurious softlockup warnings.\n\nSigned-off-by: Colin Ian King \u003ccolin.king@canonical.com\u003e\nCc: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nCc: Eric Dumazet \u003ceric.dumazet@gmail.com\u003e\nCc: \u003cstable@kernel.org\u003e\nLKML-Reference: \u003c1268994482.1798.6.camel@lenovo\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "2271048d1b3b0aabf83d25b29c20646dcabedc05", "tree": "4d20fa61a1d6fc2542b283b45c2a7a374fb2c3f5", "parents": [ "a3d3203e4bb40f253b1541e310dc0f9305be7c84" ], "author": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Thu Mar 18 17:54:19 2010 -0400" }, "committer": { "name": "Steven Rostedt", "email": "rostedt@goodmis.org", "time": "Thu Mar 18 23:11:35 2010 -0400" }, "message": "ring-buffer: Do 8 byte alignment for 64 bit that can not handle 4 byte align\n\nThe ring buffer uses 4 byte alignment while recording events into the\nbuffer, even on 64bit machines. This saves space when there are lots\nof events being recorded at 4 byte boundaries.\n\nThe ring buffer has a zero copy method to write into the buffer, with\nthe reserving of space and then committing it. This may cause problems\nwhen writing an 8 byte word into a 4 byte alignment (not 8). For x86 and\nPPC this is not an issue, but on some architectures this would cause an\nout-of-alignment exception.\n\nThis patch uses CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS to determine\nif it is OK to use 4 byte alignments on 64 bit machines. If it is not,\nit forces the ring buffer event header to be 8 bytes and not 4,\nand will align the length of the data to be 8 byte aligned.\nThis keeps the data payload at 8 byte alignments and will allow these\nmachines to run without issue.\n\nThe trick to this is that the header can be either 4 bytes or 8 bytes\ndepending on the length of the data payload. The 4 byte header\nhas a length field that supports up to 112 bytes. If the length of\nthe data is more than 112, the length field is set to zero, and the actual\nlength is stored in the next 4 bytes after the header.\n\nWhen CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS is not set, the code forces\nzero in the 4 byte header forcing the length to be stored in the 4 byte\narray, even with a small data load. It also forces the length of the\ndata load to be 8 byte aligned. The combination of these two guarantee\nthat the data is always at 8 byte alignment.\n\nTested-by: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\n (on sparc64)\nReported-by: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\nAcked-by: David S. Miller \u003cdavem@davemloft.net\u003e\nSigned-off-by: Steven Rostedt \u003crostedt@goodmis.org\u003e\n" }, { "commit": "f82c37e7bb4c4d9b6a476c642d5c2d2efbd6f240", "tree": "09fc553c2fb6f527962048d139159dc139e04afc", "parents": [ "c6b9e73f2fee8bb86058f296de808b326473456b", "dcd5c1662db59a6b82942f47fb6ac9dd63f6d3dd" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Mar 18 16:52:46 2010 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Mar 18 16:52:46 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: (35 commits)\n perf: Fix unexported generic perf_arch_fetch_caller_regs\n perf record: Don\u0027t try to find buildids in a zero sized file\n perf: export perf_trace_regs and perf_arch_fetch_caller_regs\n perf, x86: Fix hw_perf_enable() event assignment\n perf, ppc: Fix compile error due to new cpu notifiers\n perf: Make the install relative to DESTDIR if specified\n kprobes: Calculate the index correctly when freeing the out-of-line execution slot\n perf tools: Fix sparse CPU numbering related bugs\n perf_event: Fix oops triggered by cpu offline/online\n perf: Drop the obsolete profile naming for trace events\n perf: Take a hot regs snapshot for trace events\n perf: Introduce new perf_fetch_caller_regs() for hot regs snapshot\n perf/x86-64: Use frame pointer to walk on irq and process stacks\n lockdep: Move lock events under lockdep recursion protection\n perf report: Print the map table just after samples for which no map was found\n perf report: Add multiple event support\n perf session: Change perf_session post processing functions to take histogram tree\n perf session: Add storage for seperating event types in report\n perf session: Change add_hist_entry to take the tree root instead of session\n perf record: Add ID and to recorded event data when recording multiple events\n ...\n" }, { "commit": "dcd5c1662db59a6b82942f47fb6ac9dd63f6d3dd", "tree": "432f0d89d45fc62d666d46e591ffe109f111cb1e", "parents": [ "9f591fd76afdc0e5192e9ed00a36f8efc0b4dfe6" ], "author": { "name": "Frederic Weisbecker", "email": "fweisbec@gmail.com", "time": "Tue Mar 16 01:05:02 2010 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Wed Mar 17 12:26:49 2010 +0100" }, "message": "perf: Fix unexported generic perf_arch_fetch_caller_regs\n\nperf_arch_fetch_caller_regs() is exported for the overriden x86\nversion, but not for the generic weak version.\n\nAs a general rule, weak functions should not have their symbol\nexported in the same file they are defined.\n\nSo let\u0027s export it on trace_event_perf.c as it is used by trace\nevents only.\n\nThis fixes:\n\n\tERROR: \".perf_arch_fetch_caller_regs\" [fs/xfs/xfs.ko] undefined!\n\tERROR: \".perf_arch_fetch_caller_regs\" [arch/powerpc/platforms/cell/spufs/spufs.ko] undefined!\n\n-v2: And also only build it if trace events are enabled.\n-v3: Fix changelog mistake\n\nReported-by: Stephen Rothwell \u003csfr@canb.auug.org.au\u003e\nSigned-off-by: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\nCc: Peter Zijlstra \u003cpeterz@infradead.org\u003e\nCc: Xiao Guangrong \u003cxiaoguangrong@cn.fujitsu.com\u003e\nCc: Paul Mackerras \u003cpaulus@samba.org\u003e\nLKML-Reference: \u003c1268697902-9518-1-git-send-regression-fweisbec@gmail.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "8bc037fb89bb3104b9ae290d18c877624cd7d9cc", "tree": "33a95e7bf529ea6bdb28d1dda86f49450f9dc883", "parents": [ "c890692bf37671b5b78a1870d55d6d87e1c8a509" ], "author": { "name": "KOSAKI Motohiro", "email": "kosaki.motohiro@jp.fujitsu.com", "time": "Wed Mar 17 09:36:58 2010 +0900" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Wed Mar 17 10:48:49 2010 +0100" }, "message": "sched: Use proper type in sched_getaffinity()\n\nUsing the proper type fixes the following compiler warning:\n\n kernel/sched.c:4850: warning: comparison of distinct pointer types lacks a cast\n\nSigned-off-by: KOSAKI Motohiro \u003ckosaki.motohiro@jp.fujitsu.com\u003e\nCc: torvalds@linux-foundation.org\nCc: travis@sgi.com\nCc: peterz@infradead.org\nCc: drepper@redhat.com\nCc: rja@sgi.com\nCc: sharyath@in.ibm.com\nCc: steiner@sgi.com\nLKML-Reference: \u003c20100317090046.4C79.A69D9226@jp.fujitsu.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "c890692bf37671b5b78a1870d55d6d87e1c8a509", "tree": "70ffb80cf62eabaeabf334d08ae88aa63eccb5be", "parents": [ "cd3d8031eb4311e516329aee03c79a08333141f1" ], "author": { "name": "Andrew Morton", "email": "akpm@linux-foundation.org", "time": "Thu Mar 11 14:08:43 2010 -0800" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Tue Mar 16 11:13:42 2010 +0100" }, "message": "kernel/sched.c: Suppress unused var warning\n\nOn UP:\n\n kernel/sched.c: In function \u0027wake_up_new_task\u0027:\n kernel/sched.c:2631: warning: unused variable \u0027cpu\u0027\n\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nCc: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "e3818b8dce2a934cd1521dbc4827e5238d8f45d8", "tree": "871d73c67a9bfd84b7ed7c49e9d4027eac7e577f", "parents": [ "a3d3203e4bb40f253b1541e310dc0f9305be7c84" ], "author": { "name": "Paul E. McKenney", "email": "paulmck@linux.vnet.ibm.com", "time": "Mon Mar 15 17:03:43 2010 -0700" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Tue Mar 16 09:57:49 2010 +0100" }, "message": "rcu: Make rcu_read_lock_bh_held() allow for disabled BH\n\nDisabling BH can stand in for rcu_read_lock_bh(), and this patch\nupdates rcu_read_lock_bh_held() to allow for this. In order to\navoid include-file hell, this function is moved out of line to\nkernel/rcupdate.c.\n\nThis fixes a false positive RCU warning.\n\nReported-by: Arnd Bergmann \u003carnd@arndb.de\u003e\nReported-by: Eric Dumazet \u003ceric.dumazet@gmail.com\u003e\nSigned-off-by: Paul E. McKenney \u003cpaulmck@linux.vnet.ibm.com\u003e\nAcked-by: Lai Jiangshan \u003claijs@cn.fujitsu.com\u003e\nCc: dipankar@in.ibm.com\nCc: mathieu.desnoyers@polymtl.ca\nCc: josh@joshtriplett.org\nCc: dvhltc@us.ibm.com\nCc: niv@us.ibm.com\nCc: peterz@infradead.org\nCc: rostedt@goodmis.org\nCc: Valdis.Kletnieks@vt.edu\nCc: dhowells@redhat.com\nLKML-Reference: \u003c20100316000343.GA25857@linux.vnet.ibm.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "cd3d8031eb4311e516329aee03c79a08333141f1", "tree": "b01d378aa94300acdbeef84c01f81ef405505bb1", "parents": [ "a3d3203e4bb40f253b1541e310dc0f9305be7c84" ], "author": { "name": "KOSAKI Motohiro", "email": "kosaki.motohiro@jp.fujitsu.com", "time": "Fri Mar 12 16:15:36 2010 +0900" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon Mar 15 08:28:44 2010 +0100" }, "message": "sched: sched_getaffinity(): Allow less than NR_CPUS length\n\n[ Note, this commit changes the syscall ABI for \u003e 1024 CPUs systems. ]\n\nRecently, some distro decided to use NR_CPUS\u003d4096 for mysterious reasons.\nUnfortunately, glibc sched interface has the following definition:\n\n\t# define __CPU_SETSIZE 1024\n\t# define __NCPUBITS (8 * sizeof (__cpu_mask))\n\ttypedef unsigned long int __cpu_mask;\n\ttypedef struct\n\t{\n\t __cpu_mask __bits[__CPU_SETSIZE / __NCPUBITS];\n\t} cpu_set_t;\n\nIt mean, if NR_CPUS is bigger than 1024, cpu_set_t makes an\nABI issue ...\n\nMore recently, Sharyathi Nagesh reported following test program makes\nmisterious syscall failure:\n\n -----------------------------------------------------------------------\n #define _GNU_SOURCE\n #include\u003cstdio.h\u003e\n #include\u003cerrno.h\u003e\n #include\u003csched.h\u003e\n\n int main()\n {\n cpu_set_t set;\n if (sched_getaffinity(0, sizeof(cpu_set_t), \u0026set) \u003c 0)\n printf(\"\\n Call is failing with:%d\", errno);\n }\n -----------------------------------------------------------------------\n\nBecause the kernel assumes len argument of sched_getaffinity() is bigger\nthan NR_CPUS. But now it is not correct.\n\nNow we are faced with the following annoying dilemma, due to\nthe limitations of the glibc interface built in years ago:\n\n (1) if we change glibc\u0027s __CPU_SETSIZE definition, we lost\n binary compatibility of _all_ application.\n\n (2) if we don\u0027t change it, we also lost binary compatibility of\n Sharyathi\u0027s use case.\n\nThen, I would propse to change the rule of the len argument of\nsched_getaffinity().\n\nOld:\n\tlen should be bigger than NR_CPUS\nNew:\n\tlen should be bigger than maximum possible cpu id\n\nThis creates the following behavior:\n\n (A) In the real 4096 cpus machine, the above test program still\n return -EINVAL.\n\n (B) NR_CPUS\u003d4096 but the machine have less than 1024 cpus (almost\n all machines in the world), the above can run successfully.\n\nFortunatelly, BIG SGI machine is mainly used for HPC use case. It means\nthey can rebuild their programs.\n\nIOW we hope they are not annoyed by this issue ...\n\nReported-by: Sharyathi Nagesh \u003csharyath@in.ibm.com\u003e\nSigned-off-by: KOSAKI Motohiro \u003ckosaki.motohiro@jp.fujitsu.com\u003e\nAcked-by: Ulrich Drepper \u003cdrepper@redhat.com\u003e\nAcked-by: Peter Zijlstra \u003cpeterz@infradead.org\u003e\nCc: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\nCc: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nCc: Jack Steiner \u003csteiner@sgi.com\u003e\nCc: Russ Anderson \u003crja@sgi.com\u003e\nCc: Mike Travis \u003ctravis@sgi.com\u003e\nLKML-Reference: \u003c20100312161316.9520.A69D9226@jp.fujitsu.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "80a186074e72e2cd61f6716d90cf32ce54981a56", "tree": "c5f75a83498df0ea2109067b797ec7986479dda0", "parents": [ "15c989d4d14b82f43cae7efc6a7794cdd556f274", "3d07467b7aa91623b31d7b5888a123a2c8c8e9cc" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Sat Mar 13 14:46:18 2010 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Sat Mar 13 14:46:18 2010 -0800" }, "message": "Merge branch \u0027sched-fixes-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip\n\n* \u0027sched-fixes-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:\n sched: Fix pick_next_highest_task_rt() for cgroups\n sched: Cleanup: remove unused variable in try_to_wake_up()\n x86: Fix sched_clock_cpu for systems with unsynchronized TSC\n" }, { "commit": "4e3eaddd142e2142c048c5052a0a9d2604fccfc6", "tree": "5bc45a286502e54e790c54948f22364c5afd9d89", "parents": [ "8655e7e3ddec60603c4f6c14cdf642e2ba198df8", "b97c4bc16734a2e597dac7f91ee9eb78f4aeef9a" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Sat Mar 13 14:43:01 2010 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Sat Mar 13 14:43:01 2010 -0800" }, "message": "Merge branch \u0027core-fixes-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip\n\n* \u0027core-fixes-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:\n locking: Make sparse work with inline spinlocks and rwlocks\n x86/mce: Fix RCU lockdep splats\n rcu: Increase RCU CPU stall timeouts if PROVE_RCU\n ftrace: Replace read_barrier_depends() with rcu_dereference_raw()\n rcu: Suppress RCU lockdep warnings during early boot\n rcu, ftrace: Fix RCU lockdep splat in ftrace_perf_buf_prepare()\n rcu: Suppress __mpol_dup() false positive from RCU lockdep\n rcu: Make rcu_read_lock_sched_held() handle !PREEMPT\n rcu: Add control variables to lockdep_rcu_dereference() diagnostics\n rcu, cgroup: Relax the check in task_subsys_state() as early boot is now handled by lockdep-RCU\n rcu: Use wrapper function instead of exporting tasklist_lock\n sched, rcu: Fix rcu_dereference() for RCU-lockdep\n rcu: Make task_subsys_state() RCU-lockdep checks handle boot-time use\n rcu: Fix holdoff for accelerated GPs for last non-dynticked CPU\n x86/gart: Unexport gart_iommu_aperture\n\nFix trivial conflicts in kernel/trace/ftrace.c\n" }, { "commit": "8655e7e3ddec60603c4f6c14cdf642e2ba198df8", "tree": "711b6da2a665e26940c59b9db493c59d879f6cc6", "parents": [ "461d208cfbd1f0af26027b2c35ded515e54b1ee6", "b6345879ccbd9b92864fbd7eb8ac48acdb4d6b15" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Sat Mar 13 14:40:50 2010 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Sat Mar 13 14:40:50 2010 -0800" }, "message": "Merge branch \u0027tracing-fixes-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip\n\n* \u0027tracing-fixes-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:\n tracing: Do not record user stack trace from NMI context\n tracing: Disable buffer switching when starting or stopping trace\n tracing: Use same local variable when resetting the ring buffer\n function-graph: Init curr_ret_stack with ret_stack\n ring-buffer: Move disabled check into preempt disable section\n function-graph: Add tracing_thresh support to function_graph tracer\n tracing: Update the comm field in the right variable in update_max_tr\n function-graph: Use comment notation for func names of dangling \u0027}\u0027\n function-graph: Fix unused reference to ftrace_set_func()\n tracing: Fix warning in s_next of trace file ops\n tracing: Include irqflags headers from trace clock\n" }, { "commit": "9fdfbc2bff587f454dd95e2caa6d147c9abe39e4", "tree": "2feaee47cbcfb57dd0d5cf23509e22011541e717", "parents": [ "8cea4eb642890a1de58980e7e1617d1765ef8f7c", "dc1d628a67a8f042e711ea5accc0beedc3ef0092" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Sat Mar 13 14:39:42 2010 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Sat Mar 13 14:39:42 2010 -0800" }, "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: Provide generic perf_sample_data initialization\n MAINTAINERS: Add Arnaldo as tools/perf/ co-maintainer\n perf trace: Don\u0027t use pager if scripting\n perf trace/scripting: Remove extraneous header read\n perf, ARM: Modify kuser rmb() call to compile for Thumb-2\n x86/stacktrace: Don\u0027t dereference bad frame pointers\n perf archive: Don\u0027t try to collect files without a build-id\n perf_events, x86: Fixup fixed counter constraints\n perf, x86: Restrict the ANY flag\n perf, x86: rename macro in ARCH_PERFMON_EVENTSEL_ENABLE\n perf, x86: add some IBS macros to perf_event.h\n perf, x86: make IBS macros available in perf_event.h\n hw-breakpoints: Remove stub unthrottle callback\n x86/hw-breakpoints: Remove the name field\n perf: Remove pointless breakpoint union\n perf lock: Drop the buffers multiplexing dependency\n perf lock: Fix and add misc documentally things\n percpu: Add __percpu sparse annotations to hw_breakpoint\n" }, { "commit": "b6345879ccbd9b92864fbd7eb8ac48acdb4d6b15", "tree": "5f7d831ab4de8f8c3577230ba8b15e0681eef52f", "parents": [ "a2f8071428ed9a0f06865f417c962421c9a6b488" ], "author": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Fri Mar 12 20:03:30 2010 -0500" }, "committer": { "name": "Steven Rostedt", "email": "rostedt@goodmis.org", "time": "Fri Mar 12 20:31:49 2010 -0500" }, "message": "tracing: Do not record user stack trace from NMI context\n\nA bug was found with Li Zefan\u0027s ftrace_stress_test that caused applications\nto segfault during the test.\n\nPlacing a tracing_off() in the segfault code, and examining several\ntraces, I found that the following was always the case. The lock tracer\nwas enabled (lockdep being required) and userstack was enabled. Testing\nthis out, I just enabled the two, but that was not good enough. I needed\nto run something else that could trigger it. Running a load like hackbench\ndid not work, but executing a new program would. The following would\ntrigger the segfault within seconds:\n\n # echo 1 \u003e /debug/tracing/options/userstacktrace\n # echo 1 \u003e /debug/tracing/events/lock/enable\n # while :; do ls \u003e /dev/null ; done\n\nEnabling the function graph tracer and looking at what was happening\nI finally noticed that all cashes happened just after an NMI.\n\n 1) | copy_user_handle_tail() {\n 1) | bad_area_nosemaphore() {\n 1) | __bad_area_nosemaphore() {\n 1) | no_context() {\n 1) | fixup_exception() {\n 1) 0.319 us | search_exception_tables();\n 1) 0.873 us | }\n[...]\n 1) 0.314 us | __rcu_read_unlock();\n 1) 0.325 us | native_apic_mem_write();\n 1) 0.943 us | }\n 1) 0.304 us | rcu_nmi_exit();\n[...]\n 1) 0.479 us | find_vma();\n 1) | bad_area() {\n 1) | __bad_area() {\n\nAfter capturing several traces of failures, all of them happened\nafter an NMI. Curious about this, I added a trace_printk() to the NMI\nhandler to read the regs-\u003eip to see where the NMI happened. In which I\nfound out it was here:\n\nffffffff8135b660 \u003cpage_fault\u003e:\nffffffff8135b660: 48 83 ec 78 sub $0x78,%rsp\nffffffff8135b664: e8 97 01 00 00 callq ffffffff8135b800 \u003cerror_entry\u003e\n\nWhat was happening is that the NMI would happen at the place that a page\nfault occurred. It would call rcu_read_lock() which was traced by\nthe lock events, and the user_stack_trace would run. This would trigger\na page fault inside the NMI. I do not see where the CR2 register is\nsaved or restored in NMI handling. This means that it would corrupt\nthe page fault handling that the NMI interrupted.\n\nThe reason the while loop of ls helped trigger the bug, was that\neach execution of ls would cause lots of pages to be faulted in, and\nincrease the chances of the race happening.\n\nThe simple solution is to not allow user stack traces in NMI context.\nAfter this patch, I ran the above \"ls\" test for a couple of hours\nwithout any issues. Without this patch, the bug would trigger in less\nthan a minute.\n\nCc: stable@kernel.org\nReported-by: Li Zefan \u003clizf@cn.fujitsu.com\u003e\nSigned-off-by: Steven Rostedt \u003crostedt@goodmis.org\u003e\n" }, { "commit": "a2f8071428ed9a0f06865f417c962421c9a6b488", "tree": "731d1e4f684fa5e5e27b56f1ed5f74d5945b20bd", "parents": [ "283740c619d211e34572cc93c8cdba92ccbdb9cc" ], "author": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Fri Mar 12 19:56:00 2010 -0500" }, "committer": { "name": "Steven Rostedt", "email": "rostedt@goodmis.org", "time": "Fri Mar 12 20:30:21 2010 -0500" }, "message": "tracing: Disable buffer switching when starting or stopping trace\n\nWhen the trace iterator is read, tracing_start() and tracing_stop()\nis called to stop tracing while the iterator is processing the trace\noutput.\n\nThese functions disable both the standard buffer and the max latency\nbuffer. But if the wakeup tracer is running, it can switch these\nbuffers between the two disables:\n\n buffer \u003d global_trace.buffer;\n if (buffer)\n ring_buffer_record_disable(buffer);\n\n \u003c\u003c\u003c--------- swap happens here\n\n buffer \u003d max_tr.buffer;\n if (buffer)\n ring_buffer_record_disable(buffer);\n\nWhat happens is that we disabled the same buffer twice. On tracing_start()\nwe can enable the same buffer twice. All ring_buffer_record_disable()\nmust be matched with a ring_buffer_record_enable() or the buffer\ncan be disable permanently, or enable prematurely, and cause a bug\nwhere a reset happens while a trace is commiting.\n\nThis patch protects these two by taking the ftrace_max_lock to prevent\na switch from occurring.\n\nFound with Li Zefan\u0027s ftrace_stress_test.\n\nCc: stable@kernel.org\nReported-by: Lai Jiangshan \u003claijs@cn.fujitsu.com\u003e\nSigned-off-by: Steven Rostedt \u003crostedt@goodmis.org\u003e\n" }, { "commit": "283740c619d211e34572cc93c8cdba92ccbdb9cc", "tree": "3bdce475017ff9a5fe82c6d214d27b27e555320c", "parents": [ "ea14eb714041d40fcc5180b5a586034503650149" ], "author": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Fri Mar 12 19:48:41 2010 -0500" }, "committer": { "name": "Steven Rostedt", "email": "rostedt@goodmis.org", "time": "Fri Mar 12 20:29:20 2010 -0500" }, "message": "tracing: Use same local variable when resetting the ring buffer\n\nIn the ftrace code that resets the ring buffer it references the\nbuffer with a local variable, but then uses the tr-\u003ebuffer as the\nparameter to reset. If the wakeup tracer is running, which can\nswitch the tr-\u003ebuffer with the max saved buffer, this can break\nthe requirement of disabling the buffer before the reset.\n\n buffer \u003d tr-\u003ebuffer;\n ring_buffer_record_disable(buffer);\n synchronize_sched();\n __tracing_reset(tr-\u003ebuffer, cpu);\n\nIf the tr-\u003ebuffer is swapped, then the reset is not happening to the\nbuffer that was disabled. This will cause the ring buffer to fail.\n\nFound with Li Zefan\u0027s ftrace_stress_test.\n\nCc: stable@kernel.org\nReported-by: Lai Jiangshan \u003claijs@cn.fujitsu.com\u003e\nSigned-off-by: Steven Rostedt \u003crostedt@goodmis.org\u003e\n" }, { "commit": "ea14eb714041d40fcc5180b5a586034503650149", "tree": "a7cb72753c85cf79ac6fa31863d65d2f081e0823", "parents": [ "52fbe9cde7fdb5c6fac196d7ebd2d92d05ef3cd4" ], "author": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Fri Mar 12 19:41:23 2010 -0500" }, "committer": { "name": "Steven Rostedt", "email": "rostedt@goodmis.org", "time": "Fri Mar 12 20:28:02 2010 -0500" }, "message": "function-graph: Init curr_ret_stack with ret_stack\n\nIf the graph tracer is active, and a task is forked but the allocating of\nthe processes graph stack fails, it can cause crash later on.\n\nThis is due to the temporary stack being NULL, but the curr_ret_stack\nvariable is copied from the parent. If it is not -1, then in\nftrace_graph_probe_sched_switch() the following:\n\n\tfor (index \u003d next-\u003ecurr_ret_stack; index \u003e\u003d 0; index--)\n\t\tnext-\u003eret_stack[index].calltime +\u003d timestamp;\n\nWill cause a kernel OOPS.\n\nFound with Li Zefan\u0027s ftrace_stress_test.\n\nCc: stable@kernel.org\nSigned-off-by: Steven Rostedt \u003crostedt@goodmis.org\u003e\n" }, { "commit": "52fbe9cde7fdb5c6fac196d7ebd2d92d05ef3cd4", "tree": "77ec9beecf7a58ed06f59c589f122caf87ec4f0b", "parents": [ "915a0b575fdb2376135ed9334b3ccb1eb51db622" ], "author": { "name": "Lai Jiangshan", "email": "laijs@cn.fujitsu.com", "time": "Mon Mar 08 14:50:43 2010 +0800" }, "committer": { "name": "Steven Rostedt", "email": "rostedt@goodmis.org", "time": "Fri Mar 12 20:26:56 2010 -0500" }, "message": "ring-buffer: Move disabled check into preempt disable section\n\nThe ring buffer resizing and resetting relies on a schedule RCU\naction. The buffers are disabled, a synchronize_sched() is called\nand then the resize or reset takes place.\n\nBut this only works if the disabling of the buffers are within the\npreempt disabled section, otherwise a window exists that the buffers\ncan be written to while a reset or resize takes place.\n\nCc: stable@kernel.org\nReported-by: Li Zefan \u003clizf@cn.fujitsu.com\u003e\nSigned-off-by: Lai Jiangshan \u003claijs@cn.fujitsu.com\u003e\nLKML-Reference: \u003c4B949E43.2010906@cn.fujitsu.com\u003e\nSigned-off-by: Steven Rostedt \u003crostedt@goodmis.org\u003e\n" }, { "commit": "64d5aea30062ce9f3ce7c62be8ae65e776cbfee2", "tree": "7020f4b8533d7fcf5eb24494453515ee672dd172", "parents": [ "3836a03d978e68b0ae00d3589089343c998cd4ff", "ad6759fbf35d104dbf573cd6f4c6784ad6823f7e" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Fri Mar 12 16:27:08 2010 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Fri Mar 12 16:27:08 2010 -0800" }, "message": "Merge branch \u0027timers-fixes-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip\n\n* \u0027timers-fixes-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:\n timekeeping: Prevent oops when GENERIC_TIME\u003dn\n" }, { "commit": "c32da02342b7521df25fefc2ef20aee0e61cf887", "tree": "7e38f664fa3e13602c357d37f77d8adcf82fccc2", "parents": [ "dca1d9f6d7ae428c193f32bd3e9a4ca13176648b", "318ae2edc3b29216abd8a2510f3f80b764f06858" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Fri Mar 12 16:04:50 2010 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Fri Mar 12 16:04:50 2010 -0800" }, "message": "Merge branch \u0027for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial\n\n* \u0027for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial: (56 commits)\n doc: fix typo in comment explaining rb_tree usage\n Remove fs/ntfs/ChangeLog\n doc: fix console doc typo\n doc: cpuset: Update the cpuset flag file\n Fix of spelling in arch/sparc/kernel/leon_kernel.c no longer needed\n Remove drivers/parport/ChangeLog\n Remove drivers/char/ChangeLog\n doc: typo - Table 1-2 should refer to \"status\", not \"statm\"\n tree-wide: fix typos \"ass?o[sc]iac?te\" -\u003e \"associate\" in comments\n No need to patch AMD-provided drivers/gpu/drm/radeon/atombios.h\n devres/irq: Fix devm_irq_match comment\n Remove reference to kthread_create_on_cpu\n tree-wide: Assorted spelling fixes\n tree-wide: fix \u0027lenght\u0027 typo in comments and code\n drm/kms: fix spelling in error message\n doc: capitalization and other minor fixes in pnp doc\n devres: typo fix s/dev/devm/\n Remove redundant trailing semicolons from macros\n fix typo \"definetly\" -\u003e \"definitely\" in comment\n tree-wide: s/widht/width/g typo in comments\n ...\n\nFix trivial conflict in Documentation/laptops/00-INDEX\n" }, { "commit": "2edf5e49800846a2b2b6461d99cdae18067c440f", "tree": "a03fc295676a23c30ae467ba96a1efaf5762dd90", "parents": [ "4f0e056fdebc15d3f4724ebc7bbf323158add1d7" ], "author": { "name": "Dave Young", "email": "hidave.darkstar@gmail.com", "time": "Wed Mar 10 15:24:10 2010 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Fri Mar 12 15:53:10 2010 -0800" }, "message": "sysctl extern cleanup: lockdep\n\nExtern declarations in sysctl.c should be moved to their own header file,\nand then include them in relavant .c files.\n\nMove lockdep extern declarations to linux/lockdep.h\n\nSigned-off-by: Dave Young \u003chidave.darkstar@gmail.com\u003e\nCc: Ingo Molnar \u003cmingo@elte.hu\u003e\nCc: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nCc: Thomas Gleixner \u003ctglx@linutronix.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "4f0e056fdebc15d3f4724ebc7bbf323158add1d7", "tree": "79823a3e71a696fa9d4148a2ad0709c5deb07805", "parents": [ "c55b7c3e82d0ad58f35a0785faaaf2f70b9b6cd3" ], "author": { "name": "Dave Young", "email": "hidave.darkstar@gmail.com", "time": "Wed Mar 10 15:24:09 2010 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Fri Mar 12 15:53:10 2010 -0800" }, "message": "sysctl extern cleanup: rtmutex\n\nExtern declarations in sysctl.c should be moved to their own header file,\nand then include them in relavant .c files.\n\nMove max_lock_depth extern declaration to linux/rtmutex.h\n\nSigned-off-by: Dave Young \u003chidave.darkstar@gmail.com\u003e\nCc: Ingo Molnar \u003cmingo@elte.hu\u003e\nCc: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nCc: Thomas Gleixner \u003ctglx@linutronix.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "c55b7c3e82d0ad58f35a0785faaaf2f70b9b6cd3", "tree": "5672da5b62c6c8e0c806a6b235de5131f7b974c8", "parents": [ "15485a4682d1d3bfee2aa78b4b1a5d36f5746b64" ], "author": { "name": "Dave Young", "email": "hidave.darkstar@gmail.com", "time": "Wed Mar 10 15:24:08 2010 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Fri Mar 12 15:53:10 2010 -0800" }, "message": "sysctl extern cleanup: acct\n\nExtern declarations in sysctl.c should be moved to their own header file,\nand then include them in relavant .c files.\n\nMove acct_parm extern declaration to linux/acct.h\n\nSigned-off-by: Dave Young \u003chidave.darkstar@gmail.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "15485a4682d1d3bfee2aa78b4b1a5d36f5746b64", "tree": "538857520760de1cf3575c8b5e4f73bab70557ff", "parents": [ "5ed109103d73b0bafc92e860cead56725231384d" ], "author": { "name": "Dave Young", "email": "hidave.darkstar@gmail.com", "time": "Wed Mar 10 15:24:07 2010 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Fri Mar 12 15:53:10 2010 -0800" }, "message": "sysctl extern cleanup: sg\n\nExtern declarations in sysctl.c should be moved to their own header file,\nand then include them in relavant .c files.\n\nMove sg_big_buff extern declaration to scsi/sg.h\n\nSigned-off-by: Dave Young \u003chidave.darkstar@gmail.com\u003e\nAcked-by: Doug Gilbert \u003cdgilbert@interlog.com\u003e\nCc: James Bottomley \u003cJames.Bottomley@HansenPartnership.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "5ed109103d73b0bafc92e860cead56725231384d", "tree": "4744e2d3c0e11095865e22ff285f71b7fb542f3d", "parents": [ "e5ab67726f33b50f40db0ccf271ceb3c658554d5" ], "author": { "name": "Dave Young", "email": "hidave.darkstar@gmail.com", "time": "Wed Mar 10 15:24:06 2010 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Fri Mar 12 15:53:10 2010 -0800" }, "message": "sysctl extern cleanup: module\n\nExtern declarations in sysctl.c should be moved to their own header file,\nand then include them in relavant .c files.\n\nMove modprobe_path extern declaration to linux/kmod.h\nMove modules_disabled extern declaration to linux/module.h\n\nSigned-off-by: Dave Young \u003chidave.darkstar@gmail.com\u003e\nCc: Rusty Russell \u003crusty@rustcorp.com.au\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "e5ab67726f33b50f40db0ccf271ceb3c658554d5", "tree": "b4616f1f7e077f4dd4cc2586f0e8db8acd8a322b", "parents": [ "d33ed52d57e794eba55cea3f5eab3c8f80b6cb5a" ], "author": { "name": "Dave Young", "email": "hidave.darkstar@gmail.com", "time": "Wed Mar 10 15:24:05 2010 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Fri Mar 12 15:53:08 2010 -0800" }, "message": "sysctl extern cleanup: rcu\n\nExtern declarations in sysctl.c should be moved to their own header file,\nand then include them in relavant .c files.\n\nMove rcutorture_runnable extern declaration to linux/rcupdate.h\n\nSigned-off-by: Dave Young \u003chidave.darkstar@gmail.com\u003e\nAcked-by: Josh Triplett \u003cjosh@joshtriplett.org\u003e\nReviewed-by: \"Paul E. McKenney\" \u003cpaulmck@linux.vnet.ibm.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "d33ed52d57e794eba55cea3f5eab3c8f80b6cb5a", "tree": "b501f3364f5771dd538eceb3a98d0cb0a1dd5dea", "parents": [ "eb5572fed55f4c2b7dbc42582bc82dcb47632380" ], "author": { "name": "Dave Young", "email": "hidave.darkstar@gmail.com", "time": "Wed Mar 10 15:23:59 2010 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Fri Mar 12 15:52:44 2010 -0800" }, "message": "sysctl extern cleanup: signal\n\nExtern declarations in sysctl.c should be moved to their own header file,\nand then include them in relavant .c files.\n\nMove print_fatal_signals extern declaration to linux/signal.h\n\nSigned-off-by: Dave Young \u003chidave.darkstar@gmail.com\u003e\nCc: Oleg Nesterov \u003coleg@redhat.com\u003e\nCc: Roland McGrath \u003croland@redhat.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "eb5572fed55f4c2b7dbc42582bc82dcb47632380", "tree": "57a6e2d44831f6509d9fadcaa4a47d549cb974d9", "parents": [ "d759c3745e62c36fd7efee7a2ce2a327f22e9056" ], "author": { "name": "Dave Young", "email": "hidave.darkstar@gmail.com", "time": "Wed Mar 10 15:23:59 2010 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Fri Mar 12 15:52:44 2010 -0800" }, "message": "sysctl extern cleanup: C_A_D\n\nExtern declarations in sysctl.c should be moved to their own header file,\nand then include them in relavant .c files.\n\nMove C_A_D extern variable declaration to linux/reboot.h\n\nSigned-off-by: Dave Young \u003chidave.darkstar@gmail.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "8467005da3ef6104b89a4cc5e9c9d9445b75565f", "tree": "e21eb9f439a9e17e66d90c691f400db3a5b0c54d", "parents": [ "13aa9a6b0f2371d2ce0de57c2ede62ab7a787157" ], "author": { "name": "Alexey Dobriyan", "email": "adobriyan@gmail.com", "time": "Wed Mar 10 15:23:10 2010 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Fri Mar 12 15:52:40 2010 -0800" }, "message": "nsproxy: remove INIT_NSPROXY()\n\nRemove INIT_NSPROXY(), use C99 initializer.\nRemove INIT_IPC_NS(), INIT_NET_NS() while I\u0027m at it.\n\nNote: headers trim will be done later, now it\u0027s quite pointless because\nresults will be invalidated by merge window.\n\nSigned-off-by: Alexey Dobriyan \u003cadobriyan@gmail.com\u003e\nAcked-by: Serge Hallyn \u003cserue@us.ibm.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "13aa9a6b0f2371d2ce0de57c2ede62ab7a787157", "tree": "cf6e3d79a3defc5a291575aa26a5405d9815a5a5", "parents": [ "6edb6764409392836b44a61b06d94954efd6200f" ], "author": { "name": "Oleg Nesterov", "email": "oleg@redhat.com", "time": "Wed Mar 10 15:23:09 2010 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Fri Mar 12 15:52:40 2010 -0800" }, "message": "pid_ns: zap_pid_ns_processes: use SEND_SIG_NOINFO instead of force_sig()\n\nzap_pid_ns_processes() uses force_sig(SIGKILL) to ensure SIGKILL will be\ndelivered to sub-namespace inits as well. This is correct, but we are\ngoing to change force_sig_info() semantics. See\nhttp://bugzilla.kernel.org/show_bug.cgi?id\u003d15395#c31\n\nWe can use send_sig_info(SEND_SIG_NOINFO) instead, since\n614c517d7c00af1b26ded20646b329397d6f51a1 (\"signals: SEND_SIG_NOINFO should\nbe considered as SI_FROMUSER()\") SEND_SIG_NOINFO means \"from user\" and\ntherefore send_signal() will get the correct from_ancestor_ns \u003d T flag.\n\nSigned-off-by: Oleg Nesterov \u003coleg@redhat.com\u003e\nAcked-by: Serge Hallyn \u003cserue@us.ibm.com\u003e\nAcked-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\nAcked-by: Roland McGrath \u003croland@redhat.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "93c59907c6f247d09239135caecf294a106a2ae0", "tree": "f115d3763f7479ebbb9516c96bce68237edef860", "parents": [ "4dd66e69d472f0ba5355a2529364d0db9a18a02b" ], "author": { "name": "Veaceslav Falico", "email": "vfalico@redhat.com", "time": "Wed Mar 10 15:23:03 2010 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Fri Mar 12 15:52:39 2010 -0800" }, "message": "copy_signal() cleanup: clean thread_group_cputime_init()\n\nRemove unneeded initializations in thread_group_cputime_init() and in\nposix_cpu_timers_init_group(). They are useless after kmem_cache_zalloc()\nwas used in copy_signal().\n\nSigned-off-by: Veaceslav Falico \u003cvfalico@redhat.com\u003e\nAcked-by: Oleg Nesterov \u003coleg@redhat.com\u003e\nCc: Roland McGrath \u003croland@redhat.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "4dd66e69d472f0ba5355a2529364d0db9a18a02b", "tree": "b0ea53215bbe61d678090385018de64821eb6831", "parents": [ "a56704ef6b0c5796c9ff38cc78aa232dfb9644d7" ], "author": { "name": "Veaceslav Falico", "email": "vfalico@redhat.com", "time": "Wed Mar 10 15:23:02 2010 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Fri Mar 12 15:52:39 2010 -0800" }, "message": "copy_signal() cleanup: kill taskstats_tgid_init() and acct_init_pacct()\n\nKill unused functions taskstats_tgid_init() and acct_init_pacct() because\nwe don\u0027t use them anywhere after using kmem_cache_zalloc() in\ncopy_signal().\n\nSigned-off-by: Veaceslav Falico \u003cvfalico@redhat.com\u003e\nCc: Roland McGrath \u003croland@redhat.com\u003e\nCc: Oleg Nesterov \u003coleg@redhat.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "a56704ef6b0c5796c9ff38cc78aa232dfb9644d7", "tree": "7f304a916fbcd22388ed1a66c63c5571f9572bd7", "parents": [ "e34112e3966fc466ced2698e6c196bb50b1ee20e" ], "author": { "name": "Veaceslav Falico", "email": "vfalico@redhat.com", "time": "Wed Mar 10 15:23:01 2010 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Fri Mar 12 15:52:39 2010 -0800" }, "message": "copy_signal() cleanup: use zalloc and remove initializations\n\nUse kmem_cache_zalloc() on signal creation and remove unneeded\ninitialization lines in copy_signal().\n\nSigned-off-by: Veaceslav Falico \u003cvfalico@redhat.com\u003e\nAcked-by: Oleg Nesterov \u003coleg@redhat.com\u003e\nCc: Roland McGrath \u003croland@redhat.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "a0a4db548edcce067c1201ef25cf2bc29f32dca4", "tree": "6f8139a582179666cd248d978332ed0e32ad9f0f", "parents": [ "4ab78683c17d739c2a2077141dcf81a02b7fb57e" ], "author": { "name": "Kirill A. Shutemov", "email": "kirill@shutemov.name", "time": "Wed Mar 10 15:22:34 2010 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Fri Mar 12 15:52:37 2010 -0800" }, "message": "cgroups: remove events before destroying subsystem state objects\n\nEvents should be removed after rmdir of cgroup directory, but before\ndestroying subsystem state objects. Let\u0027s take reference to cgroup\ndirectory dentry to do that.\n\nSigned-off-by: Kirill A. Shutemov \u003ckirill@shutemov.name\u003e\nAcked-by: KAMEZAWA Hiroyuki \u003ckamezawa.hioryu@jp.fujitsu.com\u003e\nCc: Paul Menage \u003cmenage@google.com\u003e\nAcked-by: Li Zefan \u003clizf@cn.fujitsu.com\u003e\nCc: Balbir Singh \u003cbalbir@linux.vnet.ibm.com\u003e\nCc: Pavel Emelyanov \u003cxemul@openvz.org\u003e\nCc: Dan Malek \u003cdan@embeddedalley.com\u003e\nCc: Daisuke Nishimura \u003cnishimura@mxp.nes.nec.co.jp\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "4ab78683c17d739c2a2077141dcf81a02b7fb57e", "tree": "5884c1b7e20d1975d668d07dbf43202d737ec7bf", "parents": [ "daaf1e68874c078a15ae6ae827751839c4d81739" ], "author": { "name": "Kirill A. Shutemov", "email": "kirill@shutemov.name", "time": "Wed Mar 10 15:22:34 2010 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Fri Mar 12 15:52:37 2010 -0800" }, "message": "cgroups: fix race between userspace and kernelspace\n\nNotify userspace about cgroup removing only after rmdir of cgroup\ndirectory to avoid race between userspace and kernelspace.\n\neventfd are used to notify about two types of event:\n - control file-specific, like crossing memory threshold;\n - cgroup removing.\n\nTo understand what really happen, userspace can check if the cgroup still\nexists. To avoid race beetween userspace and kernelspace we have to\nnotify userspace about cgroup removing only after rmdir of cgroup\ndirectory.\n\nSigned-off-by: Kirill A. Shutemov \u003ckirill@shutemov.name\u003e\nReviewed-by: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nCc: Paul Menage \u003cmenage@google.com\u003e\nAcked-by: Li Zefan \u003clizf@cn.fujitsu.com\u003e\nCc: Balbir Singh \u003cbalbir@linux.vnet.ibm.com\u003e\nCc: Pavel Emelyanov \u003cxemul@openvz.org\u003e\nCc: Dan Malek \u003cdan@embeddedalley.com\u003e\nCc: Daisuke Nishimura \u003cnishimura@mxp.nes.nec.co.jp\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "0dea116876eefc9c7ca9c5d74fe665481e499fa3", "tree": "446ef64c99a234cf076b6d43efe42c8b48a928c7", "parents": [ "483c30b514bd3037fa3f19fa42327c94c10f51c8" ], "author": { "name": "Kirill A. Shutemov", "email": "kirill@shutemov.name", "time": "Wed Mar 10 15:22:20 2010 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Fri Mar 12 15:52:37 2010 -0800" }, "message": "cgroup: implement eventfd-based generic API for notifications\n\nThis patchset introduces eventfd-based API for notifications in cgroups\nand implements memory notifications on top of it.\n\nIt uses statistics in memory controler to track memory usage.\n\nOutput of time(1) on building kernel on tmpfs:\n\nRoot cgroup before changes:\n\tmake -j2 506.37 user 60.93s system 193% cpu 4:52.77 total\nNon-root cgroup before changes:\n\tmake -j2 507.14 user 62.66s system 193% cpu 4:54.74 total\nRoot cgroup after changes (0 thresholds):\n\tmake -j2 507.13 user 62.20s system 193% cpu 4:53.55 total\nNon-root cgroup after changes (0 thresholds):\n\tmake -j2 507.70 user 64.20s system 193% cpu 4:55.70 total\nRoot cgroup after changes (1 thresholds, never crossed):\n\tmake -j2 506.97 user 62.20s system 193% cpu 4:53.90 total\nNon-root cgroup after changes (1 thresholds, never crossed):\n\tmake -j2 507.55 user 64.08s system 193% cpu 4:55.63 total\n\nThis patch:\n\nIntroduce the write-only file \"cgroup.event_control\" in every cgroup.\n\nTo register new notification handler you need:\n- create an eventfd;\n- open a control file to be monitored. Callbacks register_event() and\n unregister_event() must be defined for the control file;\n- write \"\u003cevent_fd\u003e \u003ccontrol_fd\u003e \u003cargs\u003e\" to cgroup.event_control.\n Interpretation of args is defined by control file implementation;\n\neventfd will be woken up by control file implementation or when the\ncgroup is removed.\n\nTo unregister notification handler just close eventfd.\n\nIf you need notification functionality for a control file you have to\nimplement callbacks register_event() and unregister_event() in the\nstruct cftype.\n\n[kamezawa.hiroyu@jp.fujitsu.com: Kconfig fix]\nSigned-off-by: Kirill A. Shutemov \u003ckirill@shutemov.name\u003e\nReviewed-by: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nPaul Menage \u003cmenage@google.com\u003e\nCc: Li Zefan \u003clizf@cn.fujitsu.com\u003e\nCc: Balbir Singh \u003cbalbir@linux.vnet.ibm.com\u003e\nCc: Pavel Emelyanov \u003cxemul@openvz.org\u003e\nCc: Dan Malek \u003cdan@embeddedalley.com\u003e\nCc: Vladislav Buzov \u003cvbuzov@embeddedalley.com\u003e\nCc: Daisuke Nishimura \u003cnishimura@mxp.nes.nec.co.jp\u003e\nCc: Alexander Shishkin \u003cvirtuoso@slind.org\u003e\nCc: Davide Libenzi \u003cdavidel@xmailserver.org\u003e\nSigned-off-by: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "b70cc5fdb445a6929a01e9c406593265b136c99d", "tree": "7ca8ec384bd93de2ba516f045d9c8c5c77f5b84a", "parents": [ "67523c48aa74d5637848edeccf285af1c60bf14a" ], "author": { "name": "Li Zefan", "email": "lizf@cn.fujitsu.com", "time": "Wed Mar 10 15:22:12 2010 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Fri Mar 12 15:52:36 2010 -0800" }, "message": "cgroups: clean up cgroup_pidlist_find() a bit\n\nDon\u0027t call get_pid_ns() before we locate/alloc the ns.\n\nSigned-off-by: Li Zefan \u003clizf@cn.fujitsu.com\u003e\nCc: Serge Hallyn \u003cserue@us.ibm.com\u003e\nAcked-by: Paul Menage \u003cmenage@google.com\u003e\nCc: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "67523c48aa74d5637848edeccf285af1c60bf14a", "tree": "ebd14992e210c8dfb503ae5fdffc1f5392ad52df", "parents": [ "8ca712ea84728531d36841ca8f98f9e8680bcf4e" ], "author": { "name": "Ben Blum", "email": "bblum@andrew.cmu.edu", "time": "Wed Mar 10 15:22:11 2010 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Fri Mar 12 15:52:36 2010 -0800" }, "message": "cgroups: blkio subsystem as module\n\nModify the Block I/O cgroup subsystem to be able to be built as a module.\nAs the CFQ disk scheduler optionally depends on blk-cgroup, config options\nin block/Kconfig, block/Kconfig.iosched, and block/blk-cgroup.h are\nenhanced to support the new module dependency.\n\nSigned-off-by: Ben Blum \u003cbblum@andrew.cmu.edu\u003e\nCc: Li Zefan \u003clizf@cn.fujitsu.com\u003e\nCc: Paul Menage \u003cmenage@google.com\u003e\nCc: \"David S. Miller\" \u003cdavem@davemloft.net\u003e\nCc: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nCc: Lai Jiangshan \u003claijs@cn.fujitsu.com\u003e\nCc: Vivek Goyal \u003cvgoyal@redhat.com\u003e\nCc: Jens Axboe \u003cjens.axboe@oracle.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "cf5d5941fda647fe3d2f2d00cf9e0245236a5f08", "tree": "deee6501f2f08089a2cd62732c3848a59a6f6a93", "parents": [ "e6a1105ba08b265023dd71a4174fb4a29ebc7083" ], "author": { "name": "Ben Blum", "email": "bblum@andrew.cmu.edu", "time": "Wed Mar 10 15:22:09 2010 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Fri Mar 12 15:52:36 2010 -0800" }, "message": "cgroups: subsystem module unloading\n\nProvides support for unloading modular subsystems.\n\nThis patch adds a new function cgroup_unload_subsys which is to be used\nfor removing a loaded subsystem during module deletion. Reference\ncounting of the subsystems\u0027 modules is moved from once (at load time) to\nonce per attached hierarchy (in parse_cgroupfs_options and\nrebind_subsystems) (i.e., 0 or 1).\n\nSigned-off-by: Ben Blum \u003cbblum@andrew.cmu.edu\u003e\nAcked-by: Li Zefan \u003clizf@cn.fujitsu.com\u003e\nCc: Paul Menage \u003cmenage@google.com\u003e\nCc: \"David S. Miller\" \u003cdavem@davemloft.net\u003e\nCc: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nCc: Lai Jiangshan \u003claijs@cn.fujitsu.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "e6a1105ba08b265023dd71a4174fb4a29ebc7083", "tree": "c171a012df4364b0feac5d6f1bf8c354164ab0f9", "parents": [ "aae8aab40367036931608fdaf9e2dc568b516f19" ], "author": { "name": "Ben Blum", "email": "bblum@andrew.cmu.edu", "time": "Wed Mar 10 15:22:09 2010 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Fri Mar 12 15:52:36 2010 -0800" }, "message": "cgroups: subsystem module loading interface\n\nAdd interface between cgroups subsystem management and module loading\n\nThis patch implements rudimentary module-loading support for cgroups -\nnamely, a cgroup_load_subsys (similar to cgroup_init_subsys) for use as a\nmodule initcall, and a struct module pointer in struct cgroup_subsys.\n\nSeveral functions that might be wanted by modules have had EXPORT_SYMBOL\nadded to them, but it\u0027s unclear exactly which functions want it and which\nwon\u0027t.\n\nSigned-off-by: Ben Blum \u003cbblum@andrew.cmu.edu\u003e\nAcked-by: Li Zefan \u003clizf@cn.fujitsu.com\u003e\nCc: Paul Menage \u003cmenage@google.com\u003e\nCc: \"David S. Miller\" \u003cdavem@davemloft.net\u003e\nCc: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nCc: Lai Jiangshan \u003claijs@cn.fujitsu.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "aae8aab40367036931608fdaf9e2dc568b516f19", "tree": "b2a06ee21042eb3972ecd9e4153d61a8f6ed53cb", "parents": [ "d7b9fff711d5e8db8c844161c684017e556c38a0" ], "author": { "name": "Ben Blum", "email": "bblum@andrew.cmu.edu", "time": "Wed Mar 10 15:22:07 2010 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Fri Mar 12 15:52:36 2010 -0800" }, "message": "cgroups: revamp subsys array\n\nThis patch series provides the ability for cgroup subsystems to be\ncompiled as modules both within and outside the kernel tree. This is\nmainly useful for classifiers and subsystems that hook into components\nthat are already modules. cls_cgroup and blkio-cgroup serve as the\nexample use cases for this feature.\n\nIt provides an interface cgroup_load_subsys() and cgroup_unload_subsys()\nwhich modular subsystems can use to register and depart during runtime.\nThe net_cls classifier subsystem serves as the example for a subsystem\nwhich can be converted into a module using these changes.\n\nPatch #1 sets up the subsys[] array so its contents can be dynamic as\nmodules appear and (eventually) disappear. Iterations over the array are\nmodified to handle when subsystems are absent, and the dynamic section of\nthe array is protected by cgroup_mutex.\n\nPatch #2 implements an interface for modules to load subsystems, called\ncgroup_load_subsys, similar to cgroup_init_subsys, and adds a module\npointer in struct cgroup_subsys.\n\nPatch #3 adds a mechanism for unloading modular subsystems, which includes\na more advanced rework of the rudimentary reference counting introduced in\npatch 2.\n\nPatch #4 modifies the net_cls subsystem, which already had some module\ndeclarations, to be configurable as a module, which also serves as a\nsimple proof-of-concept.\n\nPart of implementing patches 2 and 4 involved updating css pointers in\neach css_set when the module appears or leaves. In doing this, it was\ndiscovered that css_sets always remain linked to the dummy cgroup,\nregardless of whether or not any subsystems are actually bound to it\n(i.e., not mounted on an actual hierarchy). The subsystem loading and\nunloading code therefore should keep in mind the special cases where the\nadded subsystem is the only one in the dummy cgroup (and therefore all\ncss_sets need to be linked back into it) and where the removed subsys was\nthe only one in the dummy cgroup (and therefore all css_sets should be\nunlinked from it) - however, as all css_sets always stay attached to the\ndummy cgroup anyway, these cases are ignored. Any fix that addresses this\nissue should also make sure these cases are addressed in the subsystem\nloading and unloading code.\n\nThis patch:\n\nMake subsys[] able to be dynamically populated to support modular\nsubsystems\n\nThis patch reworks the way the subsys[] array is used so that subsystems\ncan register themselves after boot time, and enables the internals of\ncgroups to be able to handle when subsystems are not present or may\nappear/disappear.\n\nSigned-off-by: Ben Blum \u003cbblum@andrew.cmu.edu\u003e\nAcked-by: Li Zefan \u003clizf@cn.fujitsu.com\u003e\nCc: Paul Menage \u003cmenage@google.com\u003e\nCc: \"David S. Miller\" \u003cdavem@davemloft.net\u003e\nCc: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nCc: Lai Jiangshan \u003claijs@cn.fujitsu.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "d7b9fff711d5e8db8c844161c684017e556c38a0", "tree": "fea09ff79fe543edc2d8c0e85d35de1b2c783f2d", "parents": [ "2468c7234b366eeb799ee0648cb58f9cba394a54" ], "author": { "name": "Daisuke Nishimura", "email": "nishimura@mxp.nes.nec.co.jp", "time": "Wed Mar 10 15:22:05 2010 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Fri Mar 12 15:52:36 2010 -0800" }, "message": "cgroup: introduce coalesce css_get() and css_put()\n\nCurrent css_get() and css_put() increment/decrement css-\u003erefcnt one by\none.\n\nThis patch add a new function __css_get(), which takes \"count\" as a arg\nand increment the css-\u003erefcnt by \"count\". And this patch also add a new\narg(\"count\") to __css_put() and change the function to decrement the\ncss-\u003erefcnt by \"count\".\n\nThese coalesce version of __css_get()/__css_put() will be used to improve\nperformance of memcg\u0027s moving charge feature later, where instead of\ncalling css_get()/css_put() repeatedly, these new functions will be used.\n\nNo change is needed for current users of css_get()/css_put().\n\nSigned-off-by: Daisuke Nishimura \u003cnishimura@mxp.nes.nec.co.jp\u003e\nAcked-by: Paul Menage \u003cmenage@google.com\u003e\nCc: Balbir Singh \u003cbalbir@linux.vnet.ibm.com\u003e\nAcked-by: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nCc: Li Zefan \u003clizf@cn.fujitsu.com\u003e\nCc: Daisuke Nishimura \u003cnishimura@mxp.nes.nec.co.jp\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "2468c7234b366eeb799ee0648cb58f9cba394a54", "tree": "050d7ea224b975eb71b05bf472f14f4c7bb13670", "parents": [ "5ce9f07bf1bed9a1f9886373ad0b149294f84c25" ], "author": { "name": "Daisuke Nishimura", "email": "nishimura@mxp.nes.nec.co.jp", "time": "Wed Mar 10 15:22:03 2010 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Fri Mar 12 15:52:35 2010 -0800" }, "message": "cgroup: introduce cancel_attach()\n\nAdd cancel_attach() operation to struct cgroup_subsys. cancel_attach()\ncan be used when can_attach() operation prepares something for the subsys,\nbut we should rollback what can_attach() operation has prepared if attach\ntask fails after we\u0027ve succeeded in can_attach().\n\nSigned-off-by: Daisuke Nishimura \u003cnishimura@mxp.nes.nec.co.jp\u003e\nAcked-by: Li Zefan \u003clizf@cn.fujitsu.com\u003e\nReviewed-by: Paul Menage \u003cmenage@google.com\u003e\nCc: Balbir Singh \u003cbalbir@linux.vnet.ibm.com\u003e\nAcked-by: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nCc: Daisuke Nishimura \u003cnishimura@mxp.nes.nec.co.jp\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "5cacdb4add1b1e50fe75edc50ebbb7bddd9cf5e7", "tree": "bd6595bb8c5c7e20ad01ed7ef766d873e5d26db3", "parents": [ "e28cbf22933d0c0ccaf3c4c27a1a263b41f73859" ], "author": { "name": "Christoph Hellwig", "email": "hch@lst.de", "time": "Wed Mar 10 15:21:21 2010 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Fri Mar 12 15:52:32 2010 -0800" }, "message": "Add generic sys_olduname()\n\nAdd generic implementations of the old and really old uname system calls.\nNote that sh only implements sys_olduname but not sys_oldolduname, but I\u0027m\nnot going to bother with another ifdef for that special case.\n\nm32r implemented an old uname but never wired it up, so kill it, too.\n\nSigned-off-by: Christoph Hellwig \u003chch@lst.de\u003e\nCc: Ralf Baechle \u003cralf@linux-mips.org\u003e\nCc: Benjamin Herrenschmidt \u003cbenh@kernel.crashing.org\u003e\nCc: Paul Mundt \u003clethal@linux-sh.org\u003e\nCc: Jeff Dike \u003cjdike@addtoit.com\u003e\nCc: Hirokazu Takata \u003ctakata@linux-m32r.org\u003e\nCc: Thomas Gleixner \u003ctglx@linutronix.de\u003e\nCc: Ingo Molnar \u003cmingo@elte.hu\u003e\nCc: H. Peter Anvin \u003chpa@zytor.com\u003e\nCc: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\nCc: Arnd Bergmann \u003carnd@arndb.de\u003e\nCc: Heiko Carstens \u003cheiko.carstens@de.ibm.com\u003e\nCc: Martin Schwidefsky \u003cschwidefsky@de.ibm.com\u003e\nCc: \"Luck, Tony\" \u003ctony.luck@intel.com\u003e\nCc: James Morris \u003cjmorris@namei.org\u003e\nCc: Andreas Schwab \u003cschwab@linux-m68k.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "e28cbf22933d0c0ccaf3c4c27a1a263b41f73859", "tree": "a93ff48cfd97766a23b2c4f3ea86fccfc9c51d3f", "parents": [ "baed7fc9b580bd3fb8252ff1d9b36eaf1f86b670" ], "author": { "name": "Christoph Hellwig", "email": "hch@lst.de", "time": "Wed Mar 10 15:21:19 2010 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Fri Mar 12 15:52:32 2010 -0800" }, "message": "improve sys_newuname() for compat architectures\n\nOn an architecture that supports 32-bit compat we need to override the\nreported machine in uname with the 32-bit value. Instead of doing this\nseparately in every architecture introduce a COMPAT_UTS_MACHINE define in\n\u003casm/compat.h\u003e and apply it directly in sys_newuname().\n\nSigned-off-by: Christoph Hellwig \u003chch@lst.de\u003e\nCc: Ralf Baechle \u003cralf@linux-mips.org\u003e\nCc: Benjamin Herrenschmidt \u003cbenh@kernel.crashing.org\u003e\nCc: Paul Mundt \u003clethal@linux-sh.org\u003e\nCc: Jeff Dike \u003cjdike@addtoit.com\u003e\nCc: Hirokazu Takata \u003ctakata@linux-m32r.org\u003e\nCc: Thomas Gleixner \u003ctglx@linutronix.de\u003e\nCc: Ingo Molnar \u003cmingo@elte.hu\u003e\nCc: H. Peter Anvin \u003chpa@zytor.com\u003e\nCc: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\nCc: Arnd Bergmann \u003carnd@arndb.de\u003e\nCc: Heiko Carstens \u003cheiko.carstens@de.ibm.com\u003e\nCc: Martin Schwidefsky \u003cschwidefsky@de.ibm.com\u003e\nCc: \"Luck, Tony\" \u003ctony.luck@intel.com\u003e\nCc: James Morris \u003cjmorris@namei.org\u003e\nCc: Andreas Schwab \u003cschwab@linux-m68k.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "baed7fc9b580bd3fb8252ff1d9b36eaf1f86b670", "tree": "38f23cd9888b92de3f73ed1f4ce48cd83e940e0e", "parents": [ "a4679373cf4ee0e7792dc56205365732b725c2c1" ], "author": { "name": "Christoph Hellwig", "email": "hch@lst.de", "time": "Wed Mar 10 15:21:18 2010 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Fri Mar 12 15:52:32 2010 -0800" }, "message": "Add generic sys_ipc wrapper\n\nAdd a generic implementation of the ipc demultiplexer syscall. Except for\ns390 and sparc64 all implementations of the sys_ipc are nearly identical.\n\nThere are slight differences in the types of the parameters, where mips\nand powerpc as the only 64-bit architectures with sys_ipc use unsigned\nlong for the \"third\" argument as it gets casted to a pointer later, while\nit traditionally is an \"int\" like most other paramters. frv goes even\nfurther and uses unsigned long for all parameters execept for \"ptr\" which\nis a pointer type everywhere. The change from int to unsigned long for\n\"third\" and back to \"int\" for the others on frv should be fine due to the\nin-register calling conventions for syscalls (we already had a similar\nissue with the generic sys_ptrace), but I\u0027d prefer to have the arch\nmaintainers looks over this in details.\n\nExcept for that h8300, m68k and m68knommu lack an impplementation of the\nsemtimedop sub call which this patch adds, and various architectures have\ngets used - at least on i386 it seems superflous as the compat code on\nx86-64 and ia64 doesn\u0027t even bother to implement it.\n\n[akpm@linux-foundation.org: add sys_ipc to sys_ni.c]\nSigned-off-by: Christoph Hellwig \u003chch@lst.de\u003e\nCc: Ralf Baechle \u003cralf@linux-mips.org\u003e\nCc: Benjamin Herrenschmidt \u003cbenh@kernel.crashing.org\u003e\nCc: Paul Mundt \u003clethal@linux-sh.org\u003e\nCc: Jeff Dike \u003cjdike@addtoit.com\u003e\nCc: Hirokazu Takata \u003ctakata@linux-m32r.org\u003e\nCc: Thomas Gleixner \u003ctglx@linutronix.de\u003e\nCc: Ingo Molnar \u003cmingo@elte.hu\u003e\nReviewed-by: H. Peter Anvin \u003chpa@zytor.com\u003e\nCc: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\nCc: Arnd Bergmann \u003carnd@arndb.de\u003e\nCc: Heiko Carstens \u003cheiko.carstens@de.ibm.com\u003e\nCc: Martin Schwidefsky \u003cschwidefsky@de.ibm.com\u003e\nCc: \"Luck, Tony\" \u003ctony.luck@intel.com\u003e\nCc: James Morris \u003cjmorris@namei.org\u003e\nCc: Andreas Schwab \u003cschwab@linux-m68k.org\u003e\nAcked-by: Jesper Nilsson \u003cjesper.nilsson@axis.com\u003e\nAcked-by: Russell King \u003crmk+kernel@arm.linux.org.uk\u003e\nAcked-by: David Howells \u003cdhowells@redhat.com\u003e\nAcked-by: Kyle McMartin \u003ckyle@mcmartin.ca\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "15365c108ea27598e265f8c13e7051d99ca5b0b9", "tree": "487cc70e96a3d6696f8f62fb7b6dbaacbc84ace5", "parents": [ "829b6c1ef488856c6a46a2f705f5068062d5f34c" ], "author": { "name": "Stanislaw Gruszka", "email": "sgruszka@redhat.com", "time": "Thu Mar 11 14:04:31 2010 -0800" }, "committer": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Fri Mar 12 19:12:18 2010 +0100" }, "message": "posix-cpu-timers: Reset expire cache when no timer is running\n\nWhen a process deletes cpu timer or a timer expires we do not clear\nthe expiration cache sig-\u003ecputimer_expires.\n\nAs a result the fastpath_timer_check() which prevents us to loop over\nall threads in case no timer is active is not working and we run the\nslow path needlessly on every tick.\n\nZero sig-\u003ecputimer_expires in stop_process_timers().\n\nSigned-off-by: Stanislaw Gruszka \u003csgruszka@redhat.com\u003e\nCc: Ingo Molnar \u003cmingo@elte.hu\u003e\nCc: Oleg Nesterov \u003coleg@redhat.com\u003e\nCc: Peter Zijlstra \u003cpeterz@infradead.org\u003e\nCc: Hidetoshi Seto \u003cseto.hidetoshi@jp.fujitsu.com\u003e\nCc: Spencer Candland \u003cspencer@bluehost.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\n" }, { "commit": "829b6c1ef488856c6a46a2f705f5068062d5f34c", "tree": "9433440d8afc11b023231e185ff05db9c9e12ea4", "parents": [ "80a05b9ffa7dc13f6693902dd8999a2b61a3a0d7" ], "author": { "name": "Andrew Morton", "email": "akpm@linux-foundation.org", "time": "Thu Mar 11 14:04:30 2010 -0800" }, "committer": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Fri Mar 12 19:11:29 2010 +0100" }, "message": "timer stats: Fix del_timer_sync() and try_to_del_timer_sync()\n\nThese functions forgot to run timer_stats_timer_clear_start_info(). It\u0027s\nunobvious what effect this has and whether it matters much - we won\u0027t be\nprinting it out anyway if the timer\u0027s detached.\n\nUntested, just an Ingo trollpatch.\n\n[ Nevertheless correct - tglx ]\n\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nCc: Ingo Molnar \u003cmingo@elte.hu\u003e\nCc: johnstul@us.ibm.com\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\n" }, { "commit": "80a05b9ffa7dc13f6693902dd8999a2b61a3a0d7", "tree": "5612eeb26804b135de66779d1a00eaf35a4ceca1", "parents": [ "ad6759fbf35d104dbf573cd6f4c6784ad6823f7e" ], "author": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Fri Mar 12 17:34:14 2010 +0100" }, "committer": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Fri Mar 12 19:10:29 2010 +0100" }, "message": "clockevents: Sanitize min_delta_ns adjustment and prevent overflows\n\nThe current logic which handles clock events programming failures can\nincrease min_delta_ns unlimited and even can cause overflows.\n\nSanitize it by:\n - prevent zero increase when min_delta_ns \u003d\u003d 1\n - limiting min_delta_ns to a jiffie\n - bail out if the jiffie limit is hit\n - add retries stats for /proc/timer_list so we can gather data\n\nReported-by: Uwe Kleine-Koenig \u003cu.kleine-koenig@pengutronix.de\u003e\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\n" }, { "commit": "3d07467b7aa91623b31d7b5888a123a2c8c8e9cc", "tree": "f7acd28870838db783146b3c87f1d56bd1c42ef2", "parents": [ "ab3b3aa5dd01b3aaa6b15caee113b21b1b6520c4" ], "author": { "name": "Peter Zijlstra", "email": "a.p.zijlstra@chello.nl", "time": "Wed Mar 10 17:07:24 2010 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Thu Mar 11 15:21:50 2010 +0100" }, "message": "sched: Fix pick_next_highest_task_rt() for cgroups\n\nSince pick_next_highest_task_rt() already iterates all the cgroups and\nis really only interested in tasks, skip over the !task entries.\n\nReported-by: Dhaval Giani \u003cdhaval.giani@gmail.com\u003e\nSigned-off-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nTested-by: Dhaval Giani \u003cdhaval.giani@gmail.com\u003e\nLKML-Reference: \u003cnew-submission\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "639fe4b12f92b54c9c3b38c82cdafaa38cfd3e63", "tree": "145b856d6945bf8575e0b1636a91be6474f87562", "parents": [ "45e16a6834b6af098702e5ea6c9a40de42ff77d8" ], "author": { "name": "Xiao Guangrong", "email": "xiaoguangrong@cn.fujitsu.com", "time": "Thu Mar 11 15:30:35 2010 +0800" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Thu Mar 11 15:21:29 2010 +0100" }, "message": "perf: export perf_trace_regs and perf_arch_fetch_caller_regs\n\nExport perf_trace_regs and perf_arch_fetch_caller_regs since module will\nuse these.\n\nSigned-off-by: Xiao Guangrong \u003cxiaoguangrong@cn.fujitsu.com\u003e\n[ use EXPORT_PER_CPU_SYMBOL_GPL() ]\nSigned-off-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nLKML-Reference: \u003c4B989C1B.2090407@cn.fujitsu.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "83ff56f46a8532488ee364bb93a9cb2a59490d33", "tree": "eacccd619d004b2578bc14e6049eb7c03aac8bb0", "parents": [ "a12b51c478899fe0b7e874a559b05ba35f1128ee" ], "author": { "name": "Masami Hiramatsu", "email": "mhiramat@redhat.com", "time": "Tue Mar 09 10:22:19 2010 -0500" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Thu Mar 11 14:06:16 2010 +0100" }, "message": "kprobes: Calculate the index correctly when freeing the out-of-line execution slot\n\nFrom : Ananth N Mavinakayanahalli \u003cananth@in.ibm.com\u003e\n\nWhen freeing the instruction slot, the arithmetic to calculate\nthe index of the slot in the page needs to account for the total\nsize of the instruction on the various architectures.\n\nCalculate the index correctly when freeing the out-of-line\nexecution slot.\n\nReported-by: Sachin Sant \u003csachinp@in.ibm.com\u003e\nReported-by: Heiko Carstens \u003cheiko.carstens@de.ibm.com\u003e\nSigned-off-by: Ananth N Mavinakayanahalli \u003cananth@in.ibm.com\u003e\nSigned-off-by: Masami Hiramatsu \u003cmhiramat@redhat.com\u003e\nLKML-Reference: \u003c4B9667AB.9050507@redhat.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "ab3b3aa5dd01b3aaa6b15caee113b21b1b6520c4", "tree": "22801ccd492e5b6927e77aacf24aa61010b3363c", "parents": [ "14be1f7454ea96ee614467a49cf018a1a383b189" ], "author": { "name": "Dan Carpenter", "email": "error27@gmail.com", "time": "Sat Mar 06 14:17:52 2010 +0300" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Thu Mar 11 13:59:59 2010 +0100" }, "message": "sched: Cleanup: remove unused variable in try_to_wake_up()\n\nWe haven\u0027t used the \"orig_rq\" variable since\n055a00865d \"Fix/add missing update_rq_clock() calls\"\n\nSigned-off-by: Dan Carpenter \u003cerror27@gmail.com\u003e\nCc: Peter Zijlstra \u003cpeterz@infradead.org\u003e\nCc: Andreas Herrmann \u003candreas.herrmann3@amd.com\u003e\nCc: Gautham R Shenoy \u003cego@in.ibm.com\u003e\nCc: efault@gmx.de\nLKML-Reference: \u003c20100306111752.GL4958@bicker\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "915a0b575fdb2376135ed9334b3ccb1eb51db622", "tree": "12070fc07897e0cd9170aeb351a96923d44d7813", "parents": [ "e02c4fd3142dfb9412531bbfabd510a2a7c6ea46", "0e95017355dcf43031da6d0e360a748717e56df1" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Thu Mar 11 13:39:33 2010 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Thu Mar 11 13:39:33 2010 +0100" }, "message": "Merge branch \u0027tip/tracing/core\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-2.6-trace into tracing/urgent\n" }, { "commit": "007b09243b099811124f69d492adeebe9e439f96", "tree": "fc80fcd1f6c5dfcb37144f4d17507d22cbbc0c11", "parents": [ "3f379b03fbfddd20536389a85c6456f8233d1f8d" ], "author": { "name": "Paul E. McKenney", "email": "paulmck@linux.vnet.ibm.com", "time": "Fri Mar 05 15:03:26 2010 -0800" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Thu Mar 11 13:38:01 2010 +0100" }, "message": "rcu: Increase RCU CPU stall timeouts if PROVE_RCU\n\nCONFIG_PROVE_RCU imposes additional overhead on the kernel, so\nincrease the RCU CPU stall timeouts in an attempt to allow for\nthis effect.\n\nSigned-off-by: Paul E. McKenney \u003cpaulmck@linux.vnet.ibm.com\u003e\nCc: laijs@cn.fujitsu.com\nCc: dipankar@in.ibm.com\nCc: mathieu.desnoyers@polymtl.ca\nCc: josh@joshtriplett.org\nCc: dvhltc@us.ibm.com\nCc: niv@us.ibm.com\nCc: peterz@infradead.org\nCc: rostedt@goodmis.org\nCc: Valdis.Kletnieks@vt.edu\nCc: dhowells@redhat.com\nLKML-Reference: \u003c1267830207-9474-2-git-send-email-paulmck@linux.vnet.ibm.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "3f379b03fbfddd20536389a85c6456f8233d1f8d", "tree": "2847590a23aa0d72e799bd6d65a8a794abb565ac", "parents": [ "54dbf96c921513bf98484a20ef366d51944a4c4d" ], "author": { "name": "Paul E. McKenney", "email": "paulmck@linux.vnet.ibm.com", "time": "Fri Mar 05 15:03:25 2010 -0800" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Thu Mar 11 13:38:01 2010 +0100" }, "message": "ftrace: Replace read_barrier_depends() with rcu_dereference_raw()\n\nReplace the calls to read_barrier_depends() in\nftrace_list_func() with rcu_dereference_raw() to improve\nreadability. The reason that we use rcu_dereference_raw() here\nis that removed entries are never freed, instead they are simply\nleaked. This is one of a very few cases where use of\nrcu_dereference_raw() is the long-term right answer. And I\ndon\u0027t yet know of any others. ;-)\n\nSigned-off-by: Paul E. McKenney \u003cpaulmck@linux.vnet.ibm.com\u003e\nAcked-by: Steven Rostedt \u003crostedt@goodmis.org\u003e\nCc: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\nCc: laijs@cn.fujitsu.com\nCc: dipankar@in.ibm.com\nCc: mathieu.desnoyers@polymtl.ca\nCc: josh@joshtriplett.org\nCc: dvhltc@us.ibm.com\nCc: niv@us.ibm.com\nCc: peterz@infradead.org\nCc: Valdis.Kletnieks@vt.edu\nCc: dhowells@redhat.com\nLKML-Reference: \u003c1267830207-9474-1-git-send-email-paulmck@linux.vnet.ibm.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "220b140b52ab6cc133f674a7ffec8fa792054f25", "tree": "df8d370f604f84145b1ba5d056d4622b6c85b488", "parents": [ "97d5a22005f38057b4bc0d95f81cd26510268794" ], "author": { "name": "Paul Mackerras", "email": "paulus@samba.org", "time": "Wed Mar 10 20:45:52 2010 +1100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Thu Mar 11 12:43:51 2010 +0100" }, "message": "perf_event: Fix oops triggered by cpu offline/online\n\nAnton Blanchard found that he could reliably make the kernel hit a\nBUG_ON in the slab allocator by taking a cpu offline and then online\nwhile a system-wide perf record session was running.\n\nThe reason is that when the cpu comes up, we completely reinitialize\nthe ctx field of the struct perf_cpu_context for the cpu. If there is\na system-wide perf record session running, then there will be a struct\nperf_event that has a reference to the context, so its refcount will\nbe 2. (The perf_event has been removed from the context\u0027s group_entry\nand event_entry lists by perf_event_exit_cpu(), but that doesn\u0027t\nremove the perf_event\u0027s reference to the context and doesn\u0027t decrement\nthe context\u0027s refcount.)\n\nWhen the cpu comes up, perf_event_init_cpu() gets called, and it calls\n__perf_event_init_context() on the cpu\u0027s context. That resets the\nrefcount to 1. Then when the perf record session finishes and the\nperf_event is closed, the refcount gets decremented to 0 and the\ncontext gets kfreed after an RCU grace period. Since the context\nwasn\u0027t kmalloced -- it\u0027s part of a per-cpu variable -- bad things\nhappen.\n\nIn fact we don\u0027t need to completely reinitialize the context when the\ncpu comes up. It\u0027s sufficient to initialize the context once at boot,\nbut we need to do it for all possible cpus.\n\nThis moves the context initialization to happen at boot time. With\nthis, we don\u0027t trash the refcount and the context never gets kfreed,\nand we don\u0027t hit the BUG_ON.\n\nReported-by: Anton Blanchard \u003canton@samba.org\u003e\nSigned-off-by: Paul Mackerras \u003cpaulus@samba.org\u003e\nTested-by: Anton Blanchard \u003canton@samba.org\u003e\nAcked-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nCc: \u003cstable@kernel.org\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "0b1adaa031a55e44f5dd942f234bf09d28e8a0d6", "tree": "354aa6cbfbcd856226c543b9f263f87864245065", "parents": [ "522dba7134d6b2e5821d3457f7941ec34f668e6d" ], "author": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Tue Mar 09 19:45:54 2010 +0100" }, "committer": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Wed Mar 10 17:45:14 2010 +0100" }, "message": "genirq: Prevent oneshot irq thread race\n\nLars-Peter pointed out that the oneshot threaded interrupt handler\ncode has the following race:\n\n CPU0 CPU1\n hande_level_irq(irq X)\n mask_ack_irq(irq X)\n handle_IRQ_event(irq X)\n wake_up(thread_handler)\n thread handler(irq X) runs\n finalize_oneshot(irq X)\n\t\t\t\t does not unmask due to \n\t\t\t\t !(desc-\u003estatus \u0026 IRQ_MASKED)\n\n return from irq\n does not unmask due to\n (desc-\u003estatus \u0026 IRQ_ONESHOT)\n \t\t\t\t \nThis leaves the interrupt line masked forever. \n\nThe reason for this is the inconsistent handling of the IRQ_MASKED\nflag. Instead of setting it in the mask function the oneshot support\nsets the flag after waking up the irq thread.\n\nThe solution for this is to set/clear the IRQ_MASKED status whenever\nwe mask/unmask an interrupt line. That\u0027s the easy part, but that\ncleanup opens another race:\n\n CPU0 CPU1\n hande_level_irq(irq)\n mask_ack_irq(irq)\n handle_IRQ_event(irq)\n wake_up(thread_handler)\n thread handler(irq) runs\n finalize_oneshot_irq(irq)\n\t\t\t\t unmask(irq)\n irq triggers again\n handle_level_irq(irq)\n mask_ack_irq(irq)\n return from irq due to IRQ_INPROGRESS\t\t\t\t \n\n return from irq\n does not unmask due to\n (desc-\u003estatus \u0026 IRQ_ONESHOT)\n\nThis requires that we synchronize finalize_oneshot_irq() with the\nprimary handler. If IRQ_INPROGESS is set we wait until the primary\nhandler on the other CPU has returned before unmasking the interrupt\nline again.\n\nWe probably have never seen that problem because it does not happen on\nUP and on SMP the irqbalancer protects us by pinning the primary\nhandler and the thread to the same CPU.\n\nReported-by: Lars-Peter Clausen \u003clars@metafoo.de\u003e\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\nCc: stable@kernel.org\n" }, { "commit": "97d5a22005f38057b4bc0d95f81cd26510268794", "tree": "b981789b1cec8ac36527e52204e407b32efa0ea6", "parents": [ "c530665c31c0140b74ca7689e7f836177796e5bd" ], "author": { "name": "Frederic Weisbecker", "email": "fweisbec@gmail.com", "time": "Fri Mar 05 05:35:37 2010 +0100" }, "committer": { "name": "Frederic Weisbecker", "email": "fweisbec@gmail.com", "time": "Wed Mar 10 14:47:18 2010 +0100" }, "message": "perf: Drop the obsolete profile naming for trace events\n\nDrop the obsolete \"profile\" naming used by perf for trace events.\nPerf can now do more than simple events counting, so generalize\nthe API naming.\n\nSigned-off-by: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\nCc: Ingo Molnar \u003cmingo@elte.hu\u003e\nCc: Peter Zijlstra \u003cpeterz@infradead.org\u003e\nCc: Paul Mackerras \u003cpaulus@samba.org\u003e\nCc: Steven Rostedt \u003crostedt@goodmis.org\u003e\nCc: Masami Hiramatsu \u003cmhiramat@redhat.com\u003e\nCc: Jason Baron \u003cjbaron@redhat.com\u003e\n" }, { "commit": "c530665c31c0140b74ca7689e7f836177796e5bd", "tree": "ac9ebb98aca58fdf84cc18958a94393a9a7bbdf3", "parents": [ "5331d7b84613b8325362dde53dc2bff2fb87d351" ], "author": { "name": "Frederic Weisbecker", "email": "fweisbec@gmail.com", "time": "Wed Mar 03 07:16:16 2010 +0100" }, "committer": { "name": "Frederic Weisbecker", "email": "fweisbec@gmail.com", "time": "Wed Mar 10 14:40:38 2010 +0100" }, "message": "perf: Take a hot regs snapshot for trace events\n\nWe are taking a wrong regs snapshot when a trace event triggers.\nEither we use get_irq_regs(), which gives us the interrupted\nregisters if we are in an interrupt, or we use task_pt_regs()\nwhich gives us the state before we entered the kernel, assuming\nwe are lucky enough to be no kernel thread, in which case\ntask_pt_regs() returns the initial set of regs when the kernel\nthread was started.\n\nWhat we want is different. We need a hot snapshot of the regs,\nso that we can get the instruction pointer to record in the\nsample, the frame pointer for the callchain, and some other\nthings.\n\nLet\u0027s use the new perf_fetch_caller_regs() for that.\n\nComparison with perf record -e lock: -R -a -f -g\nBefore:\n\n perf [kernel] [k] __do_softirq\n |\n --- __do_softirq\n |\n |--55.16%-- __open\n |\n --44.84%-- __write_nocancel\n\nAfter:\n\n perf [kernel] [k] perf_tp_event\n |\n --- perf_tp_event\n |\n |--41.07%-- lock_acquire\n | |\n | |--39.36%-- _raw_spin_lock\n | | |\n | | |--7.81%-- hrtimer_interrupt\n | | | smp_apic_timer_interrupt\n | | | apic_timer_interrupt\n\nThe old case was producing unreliable callchains. Now having\nright frame and instruction pointers, we have the trace we\nwant.\n\nAlso syscalls and kprobe events already have the right regs,\nlet\u0027s use them instead of wasting a retrieval.\n\nv2: Follow the rename perf_save_regs() -\u003e perf_fetch_caller_regs()\n\nSigned-off-by: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\nCc: Ingo Molnar \u003cmingo@elte.hu\u003e\nCc: Thomas Gleixner \u003ctglx@linutronix.de\u003e\nCc: H. Peter Anvin \u003chpa@zytor.com\u003e\nCc: Peter Zijlstra \u003cpeterz@infradead.org\u003e\nCc: Paul Mackerras \u003cpaulus@samba.org\u003e\nCc: Steven Rostedt \u003crostedt@goodmis.org\u003e\nCc: Arnaldo Carvalho de Melo \u003cacme@redhat.com\u003e\nCc: Masami Hiramatsu \u003cmhiramat@redhat.com\u003e\nCc: Jason Baron \u003cjbaron@redhat.com\u003e\nCc: Archs \u003clinux-arch@vger.kernel.org\u003e\n" }, { "commit": "5331d7b84613b8325362dde53dc2bff2fb87d351", "tree": "60f4bf4fdaf31b612eefc291bf6b558dc4c8d947", "parents": [ "61e67fb9d3ed13e6a7f58652ae4979b9c872fa57" ], "author": { "name": "Frederic Weisbecker", "email": "fweisbec@gmail.com", "time": "Thu Mar 04 21:15:56 2010 +0100" }, "committer": { "name": "Frederic Weisbecker", "email": "fweisbec@gmail.com", "time": "Wed Mar 10 14:39:35 2010 +0100" }, "message": "perf: Introduce new perf_fetch_caller_regs() for hot regs snapshot\n\nEvents that trigger overflows by interrupting a context can\nuse get_irq_regs() or task_pt_regs() to retrieve the state\nwhen the event triggered. But this is not the case for some\nother class of events like trace events as tracepoints are\nexecuted in the same context than the code that triggered\nthe event.\n\nIt means we need a different api to capture the regs there,\nnamely we need a hot snapshot to get the most important\ninformations for perf: the instruction pointer to get the\nevent origin, the frame pointer for the callchain, the code\nsegment for user_mode() tests (we always use __KERNEL_CS as\ntrace events always occur from the kernel) and the eflags\nfor further purposes.\n\nv2: rename perf_save_regs to perf_fetch_caller_regs as per\nMasami\u0027s suggestion.\n\nSigned-off-by: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\nCc: Ingo Molnar \u003cmingo@elte.hu\u003e\nCc: Thomas Gleixner \u003ctglx@linutronix.de\u003e\nCc: H. Peter Anvin \u003chpa@zytor.com\u003e\nCc: Peter Zijlstra \u003cpeterz@infradead.org\u003e\nCc: Paul Mackerras \u003cpaulus@samba.org\u003e\nCc: Steven Rostedt \u003crostedt@goodmis.org\u003e\nCc: Arnaldo Carvalho de Melo \u003cacme@redhat.com\u003e\nCc: Masami Hiramatsu \u003cmhiramat@redhat.com\u003e\nCc: Jason Baron \u003cjbaron@redhat.com\u003e\nCc: Archs \u003clinux-arch@vger.kernel.org\u003e\n" }, { "commit": "db2c4c7791cd04512093d05afc693c3511a65fd7", "tree": "11ad51f5ec2010e32edde2dea5696f90822435f4", "parents": [ "65f2ed2b2fa6034ef9890b60c8fd39fbe76b9d37" ], "author": { "name": "Frederic Weisbecker", "email": "fweisbec@gmail.com", "time": "Tue Feb 02 23:34:40 2010 +0100" }, "committer": { "name": "Frederic Weisbecker", "email": "fweisbec@gmail.com", "time": "Wed Mar 10 14:26:07 2010 +0100" }, "message": "lockdep: Move lock events under lockdep recursion protection\n\nThere are rcu locked read side areas in the path where we submit\na trace event. And these rcu_read_(un)lock() trigger lock events,\nwhich create recursive events.\n\nOne pair in do_perf_sw_event:\n\n__lock_acquire\n |\n |--96.11%-- lock_acquire\n | |\n | |--27.21%-- do_perf_sw_event\n | | perf_tp_event\n | | |\n | | |--49.62%-- ftrace_profile_lock_release\n | | | lock_release\n | | | |\n | | | |--33.85%-- _raw_spin_unlock\n\nAnother pair in perf_output_begin/end:\n\n__lock_acquire\n |--23.40%-- perf_output_begin\n | | __perf_event_overflow\n | | perf_swevent_overflow\n | | perf_swevent_add\n | | perf_swevent_ctx_event\n | | do_perf_sw_event\n | | perf_tp_event\n | | |\n | | |--55.37%-- ftrace_profile_lock_acquire\n | | | lock_acquire\n | | | |\n | | | |--37.31%-- _raw_spin_lock\n\nThe problem is not that much the trace recursion itself, as we have a\nrecursion protection already (though it\u0027s always wasteful to recurse).\nBut the trace events are outside the lockdep recursion protection, then\neach lockdep event triggers a lock trace, which will trigger two\nother lockdep events. Here the recursive lock trace event won\u0027t\nbe taken because of the trace recursion, so the recursion stops there\nbut lockdep will still analyse these new events:\n\nTo sum up, for each lockdep events we have:\n\n\tlock_*()\n\t |\n trace lock_acquire\n |\n ----- rcu_read_lock()\n | |\n | lock_acquire()\n | |\n | trace_lock_acquire() (stopped)\n | |\n\t\t | lockdep analyze\n |\n ----- rcu_read_unlock()\n |\n lock_release\n |\n trace_lock_release() (stopped)\n |\n lockdep analyze\n\nAnd you can repeat the above two times as we have two rcu read side\nsections when we submit an event.\n\nThis is fixed in this patch by moving the lock trace event under\nthe lockdep recursion protection.\n\nSigned-off-by: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\nCc: Peter Zijlstra \u003cpeterz@infradead.org\u003e\nCc: Arnaldo Carvalho de Melo \u003cacme@redhat.com\u003e\nCc: Steven Rostedt \u003crostedt@goodmis.org\u003e\nCc: Paul Mackerras \u003cpaulus@samba.org\u003e\nCc: Hitoshi Mitake \u003cmitake@dcl.info.waseda.ac.jp\u003e\nCc: Li Zefan \u003clizf@cn.fujitsu.com\u003e\nCc: Lai Jiangshan \u003claijs@cn.fujitsu.com\u003e\nCc: Masami Hiramatsu \u003cmhiramat@redhat.com\u003e\nCc: Jens Axboe \u003cjens.axboe@oracle.com\u003e\n" }, { "commit": "d4944a06666054707d23e11888e480af239e5abf", "tree": "58d8e847f198c29a2a2ddee60fe862f8973794d1", "parents": [ "f3d46b2e6fa57547f9884330798792afc83f4b04" ], "author": { "name": "Peter Zijlstra", "email": "a.p.zijlstra@chello.nl", "time": "Mon Mar 08 13:51:20 2010 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Wed Mar 10 13:22:36 2010 +0100" }, "message": "perf: Provide better condition for event rotation\n\nTry to avoid useless rotation and PMU disables.\n\n[ Could be improved by keeping a nr_runnable count to better account\n for the \u003c PERF_STAT_INACTIVE counters ]\n\nSigned-off-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nCc: Arnaldo Carvalho de Melo \u003cacme@infradead.org\u003e\nCc: paulus@samba.org\nCc: eranian@google.com\nCc: robert.richter@amd.com\nCc: fweisbec@gmail.com\nLKML-Reference: \u003cnew-submission\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "32975a4f114be52286f9a5bf6c230dbb8c0e1903", "tree": "a5259dd7fb4cab05c837bace8a735a439bafc904", "parents": [ "3f6da3905398826d85731247e7fbcf53400c18bd" ], "author": { "name": "Peter Zijlstra", "email": "a.p.zijlstra@chello.nl", "time": "Sat Mar 06 19:49:19 2010 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Wed Mar 10 13:22:25 2010 +0100" }, "message": "perf: Optimize perf_disable\n\nCurrently we always call hw_perf_disable(), even if its already disabled,\nthis seems superflous, esp. since it cannot be made NMI safe (see further\npatches).\n\nSigned-off-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nCc: paulus@samba.org\nCc: eranian@google.com\nCc: robert.richter@amd.com\nCc: fweisbec@gmail.com\nCc: Arnaldo Carvalho de Melo \u003cacme@infradead.org\u003e\nLKML-Reference: \u003cnew-submission\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "3f6da3905398826d85731247e7fbcf53400c18bd", "tree": "3e01248974385999fb8e7f8d5daa53b46228f649", "parents": [ "dc1d628a67a8f042e711ea5accc0beedc3ef0092" ], "author": { "name": "Peter Zijlstra", "email": "a.p.zijlstra@chello.nl", "time": "Fri Mar 05 13:01:18 2010 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Wed Mar 10 13:22:24 2010 +0100" }, "message": "perf: Rework and fix the arch CPU-hotplug hooks\n\nRemove the hw_perf_event_*() hotplug hooks in favour of per PMU hotplug\nnotifiers. This has the advantage of reducing the static weak interface\nas well as exposing all hotplug actions to the PMU.\n\nUse this to fix x86 hotplug usage where we did things in ONLINE which\nshould have been done in UP_PREPARE or STARTING.\n\nSigned-off-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nCc: Paul Mundt \u003clethal@linux-sh.org\u003e\nCc: paulus@samba.org\nCc: eranian@google.com\nCc: robert.richter@amd.com\nCc: fweisbec@gmail.com\nCc: Arnaldo Carvalho de Melo \u003cacme@infradead.org\u003e\nLKML-Reference: \u003c20100305154128.736225361@chello.nl\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "dc1d628a67a8f042e711ea5accc0beedc3ef0092", "tree": "728f72a5f9a8368b225890a95ea947c1c8cda301", "parents": [ "548b84166917d6f5e2296123b85ad24aecd3801d" ], "author": { "name": "Peter Zijlstra", "email": "a.p.zijlstra@chello.nl", "time": "Wed Mar 03 15:55:04 2010 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Wed Mar 10 13:22:23 2010 +0100" }, "message": "perf: Provide generic perf_sample_data initialization\n\nThis makes it easier to extend perf_sample_data and fixes a bug on arm\nand sparc, which failed to set -\u003eraw to NULL, which can cause crashes\nwhen combined with PERF_SAMPLE_RAW.\n\nIt also optimizes PowerPC and tracepoint, because the struct\ninitialization is forced to zero out the whole structure.\n\nSigned-off-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nAcked-by: Jean Pihet \u003cjpihet@mvista.com\u003e\nReviewed-by: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\nAcked-by: David S. Miller \u003cdavem@davemloft.net\u003e\nCc: Jamie Iles \u003cjamie.iles@picochip.com\u003e\nCc: Paul Mackerras \u003cpaulus@samba.org\u003e\nCc: Stephane Eranian \u003ceranian@google.com\u003e\nCc: stable@kernel.org\nLKML-Reference: \u003c20100304140100.315416040@chello.nl\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "548b84166917d6f5e2296123b85ad24aecd3801d", "tree": "0ab0300e23a02df0fe3c0579627e4998bb122c00", "parents": [ "cfb581bcd4f8c158c6f2b48bf5e232bb9e6855c0", "57d54889cd00db2752994b389ba714138652e60c" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Tue Mar 09 17:11:53 2010 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Tue Mar 09 17:11:53 2010 +0100" }, "message": "Merge commit \u0027v2.6.34-rc1\u0027 into perf/urgent\n\nConflicts:\n\ttools/perf/util/probe-event.c\n\nMerge reason: Pick up -rc1 and resolve the conflict as well.\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "318ae2edc3b29216abd8a2510f3f80b764f06858", "tree": "ce595adde342f57f379d277b25e4dd206988a052", "parents": [ "25cf84cf377c0aae5dbcf937ea89bc7893db5176", "3e58974027b04e84f68b964ef368a6cd758e2f84" ], "author": { "name": "Jiri Kosina", "email": "jkosina@suse.cz", "time": "Mon Mar 08 16:55:37 2010 +0100" }, "committer": { "name": "Jiri Kosina", "email": "jkosina@suse.cz", "time": "Mon Mar 08 16:55:37 2010 +0100" }, "message": "Merge branch \u0027for-next\u0027 into for-linus\n\nConflicts:\n\tDocumentation/filesystems/proc.txt\n\tarch/arm/mach-u300/include/mach/debug-macro.S\n\tdrivers/net/qlge/qlge_ethtool.c\n\tdrivers/net/qlge/qlge_main.c\n\tdrivers/net/typhoon.c\n" }, { "commit": "361795b1eb7c08e9e65a2ebb4a4e536294d378a2", "tree": "332cd308be3b0bfb6421c0af6a0ad6e1331b0880", "parents": [ "35960258ed388cdcebdb71df35fd5126978ca325" ], "author": { "name": "Eric W. Biederman", "email": "ebiederm@xmission.com", "time": "Fri Feb 12 13:41:56 2010 -0800" }, "committer": { "name": "Greg Kroah-Hartman", "email": "gregkh@suse.de", "time": "Sun Mar 07 17:04:51 2010 -0800" }, "message": "sysfs: Use sysfs_attr_init and sysfs_bin_attr_init on module dynamic attributes\n\nA little more whack-a-mole annotating the dynamic sysfs attributes. I\nhad everything built into my earlier test kernel, and so I missed\nthese.\n\nSigned-off-by: Eric W. Biederman \u003cebiederm@xmission.com\u003e\nSigned-off-by: Greg Kroah-Hartman \u003cgregkh@suse.de\u003e\n\n" }, { "commit": "a07e4156a2ee6359d31a44946d7ee7f85dbf6bca", "tree": "1ab5ef1c8a0e9549b8e72af889ae0b5f5f660400", "parents": [ "6992f5334995af474c2b58d010d08bc597f0f2fe" ], "author": { "name": "Eric W. Biederman", "email": "ebiederm@xmission.com", "time": "Thu Feb 11 15:23:05 2010 -0800" }, "committer": { "name": "Greg Kroah-Hartman", "email": "gregkh@suse.de", "time": "Sun Mar 07 17:04:51 2010 -0800" }, "message": "sysfs: Use sysfs_attr_init and sysfs_bin_attr_init on dynamic attributes\n\nThese are the non-static sysfs attributes that exist on\nmy test machine. Fix them to use sysfs_attr_init or\nsysfs_bin_attr_init as appropriate. It simply requires\nmaking a sysfs attribute present to see this. So this\nis a little bit tedious but otherwise not too bad.\n\nSigned-off-by: Eric W. Biederman \u003cebiederm@xmission.com\u003e\nAcked-by: WANG Cong \u003cxiyou.wangcong@gmail.com\u003e\nCc: Tejun Heo \u003ctj@kernel.org\u003e\nSigned-off-by: Greg Kroah-Hartman \u003cgregkh@suse.de\u003e\n\n" }, { "commit": "52cf25d0ab7f78eeecc59ac652ed5090f69b619e", "tree": "031d1ffb3890bd69c0260c864c512e0be62ac05c", "parents": [ "6c1733aca0b48db4d0e660d54976a1cca25b5eaf" ], "author": { "name": "Emese Revfy", "email": "re.emese@gmail.com", "time": "Tue Jan 19 02:58:23 2010 +0100" }, "committer": { "name": "Greg Kroah-Hartman", "email": "gregkh@suse.de", "time": "Sun Mar 07 17:04:49 2010 -0800" }, "message": "Driver core: Constify struct sysfs_ops in struct kobj_type\n\nConstify struct sysfs_ops.\n\nThis is part of the ops structure constification\neffort started by Arjan van de Ven et al.\n\nBenefits of this constification:\n\n * prevents modification of data that is shared\n (referenced) by many other structure instances\n at runtime\n\n * detects/prevents accidental (but not intentional)\n modification attempts on archs that enforce\n read-only kernel data at runtime\n\n * potentially better optimized code as the compiler\n can assume that the const data cannot be changed\n\n * the compiler/linker move const data into .rodata\n and therefore exclude them from false sharing\n\nSigned-off-by: Emese Revfy \u003cre.emese@gmail.com\u003e\nAcked-by: David Teigland \u003cteigland@redhat.com\u003e\nAcked-by: Matt Domsch \u003cMatt_Domsch@dell.com\u003e\nAcked-by: Maciej Sosnowski \u003cmaciej.sosnowski@intel.com\u003e\nAcked-by: Hans J. Koch \u003chjk@linutronix.de\u003e\nAcked-by: Pekka Enberg \u003cpenberg@cs.helsinki.fi\u003e\nAcked-by: Jens Axboe \u003cjens.axboe@oracle.com\u003e\nAcked-by: Stephen Hemminger \u003cshemminger@vyatta.com\u003e\nSigned-off-by: Greg Kroah-Hartman \u003cgregkh@suse.de\u003e\n\n" }, { "commit": "9cd43611ccfb46632bfa7d19f688924ea93f1613", "tree": "e11ecee403235ba9d8855892fa7ad55d9b63e221", "parents": [ "985fc176a6c03836454629be2f2a611ccc7c7002" ], "author": { "name": "Emese Revfy", "email": "re.emese@gmail.com", "time": "Thu Dec 31 14:52:51 2009 +0100" }, "committer": { "name": "Greg Kroah-Hartman", "email": "gregkh@suse.de", "time": "Sun Mar 07 17:04:49 2010 -0800" }, "message": "kobject: Constify struct kset_uevent_ops\n\nConstify struct kset_uevent_ops.\n\nThis is part of the ops structure constification\neffort started by Arjan van de Ven et al.\n\nBenefits of this constification:\n\n * prevents modification of data that is shared\n (referenced) by many other structure instances\n at runtime\n\n * detects/prevents accidental (but not intentional)\n modification attempts on archs that enforce\n read-only kernel data at runtime\n\n * potentially better optimized code as the compiler\n can assume that the const data cannot be changed\n\n * the compiler/linker move const data into .rodata\n and therefore exclude them from false sharing\n\nSigned-off-by: Emese Revfy \u003cre.emese@gmail.com\u003e\nSigned-off-by: Greg Kroah-Hartman \u003cgregkh@suse.de\u003e\n\n" }, { "commit": "c9be0a36f9bf392a7984473124a67a12964df11f", "tree": "23fcf49f277d9a093b2b29831811219410ad7b05", "parents": [ "3d03ba4d1dd2246adff5a9ff1194a539b3bc05a7" ], "author": { "name": "Andi Kleen", "email": "andi@firstfloor.org", "time": "Tue Jan 05 12:47:58 2010 +0100" }, "committer": { "name": "Greg Kroah-Hartman", "email": "gregkh@suse.de", "time": "Sun Mar 07 17:04:47 2010 -0800" }, "message": "sysdev: Pass attribute in sysdev_class attributes show/store\n\nPassing the attribute to the low level IO functions allows all kinds\nof cleanups, by sharing low level IO code without requiring\nan own function for every piece of data.\n\nAlso drivers can extend the attributes with own data fields\nand use that in the low level function.\n\nSimilar to sysdev_attributes and normal attributes.\n\nThis is a tree-wide sweep, converting everything in one go.\n\nNo functional changes in this patch other than passing the new\nargument everywhere.\n\nTested on x86, the non x86 parts are uncompiled.\n\nSigned-off-by: Andi Kleen \u003cak@linux.intel.com\u003e\nSigned-off-by: Greg Kroah-Hartman \u003cgregkh@suse.de\u003e\n\n\n" }, { "commit": "8d9032bbe4671dc481261ccd4e161cd96e54b118", "tree": "a31d22f488f7d6789259da68c53cb2727a925fa8", "parents": [ "93eb211e6c9ff6054fcf9c5b9e344d8d9ad29175" ], "author": { "name": "Daisuke HATAYAMA", "email": "d.hatayama@jp.fujitsu.com", "time": "Fri Mar 05 13:44:10 2010 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Sat Mar 06 11:26:46 2010 -0800" }, "message": "elf coredump: add extended numbering support\n\nThe current ELF dumper implementation can produce broken corefiles if\nprogram headers exceed 65535. This number is determined by the number of\nvmas which the process have. In particular, some extreme programs may use\nmore than 65535 vmas. (If you google max_map_count, you can find some\nusers facing this problem.) This kind of program never be able to generate\ncorrect coredumps.\n\nThis patch implements ``extended numbering\u0027\u0027 that uses sh_info field of\nthe first section header instead of e_phnum field in order to represent\nupto 4294967295 vmas.\n\nThis is supported by\nAMD64-ABI(http://www.x86-64.org/documentation.html) and\nSolaris(http://docs.sun.com/app/docs/doc/817-1984/).\nOf course, we are preparing patches for gdb and binutils.\n\nSigned-off-by: Daisuke HATAYAMA \u003cd.hatayama@jp.fujitsu.com\u003e\nCc: \"Luck, Tony\" \u003ctony.luck@intel.com\u003e\nCc: Jeff Dike \u003cjdike@addtoit.com\u003e\nCc: David Howells \u003cdhowells@redhat.com\u003e\nCc: Greg Ungerer \u003cgerg@snapgear.com\u003e\nCc: Roland McGrath \u003croland@redhat.com\u003e\nCc: Oleg Nesterov \u003coleg@redhat.com\u003e\nCc: Ingo Molnar \u003cmingo@elte.hu\u003e\nCc: Alexander Viro \u003cviro@zeniv.linux.org.uk\u003e\nCc: Andi Kleen \u003candi@firstfloor.org\u003e\nCc: Alan Cox \u003calan@lxorguk.ukuu.org.uk\u003e\nCc: \u003clinux-arch@vger.kernel.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "1fcccbac89f5bbc5e41aa72086960059fce372da", "tree": "9e42ee69f0216e612e5bd4338d6203dbad2d002f", "parents": [ "088e7af73a962fcc8883b7a6392544d8342553d6" ], "author": { "name": "Daisuke HATAYAMA", "email": "d.hatayama@jp.fujitsu.com", "time": "Fri Mar 05 13:44:07 2010 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Sat Mar 06 11:26:45 2010 -0800" }, "message": "elf coredump: replace ELF_CORE_EXTRA_* macros by functions\n\nelf_core_dump() and elf_fdpic_core_dump() use #ifdef and the corresponding\nmacro for hiding _multiline_ logics in functions. This patch removes\n#ifdef and replaces ELF_CORE_EXTRA_* by corresponding functions. For\narchitectures not implemeonting ELF_CORE_EXTRA_*, we use weak functions in\norder to reduce a range of modification.\n\nThis cleanup is for my next patches, but I think this cleanup itself is\nworth doing regardless of my firnal purpose.\n\nSigned-off-by: Daisuke HATAYAMA \u003cd.hatayama@jp.fujitsu.com\u003e\nCc: \"Luck, Tony\" \u003ctony.luck@intel.com\u003e\nCc: Jeff Dike \u003cjdike@addtoit.com\u003e\nCc: David Howells \u003cdhowells@redhat.com\u003e\nCc: Greg Ungerer \u003cgerg@snapgear.com\u003e\nCc: Roland McGrath \u003croland@redhat.com\u003e\nCc: Oleg Nesterov \u003coleg@redhat.com\u003e\nCc: Ingo Molnar \u003cmingo@elte.hu\u003e\nCc: Alexander Viro \u003cviro@zeniv.linux.org.uk\u003e\nCc: Andi Kleen \u003candi@firstfloor.org\u003e\nCc: Alan Cox \u003calan@lxorguk.ukuu.org.uk\u003e\nCc: \u003clinux-arch@vger.kernel.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "cea83886dde49fd7524e9f4a246dd5dff4ad236a", "tree": "972db619ba8ae866a858744708a454f088182e75", "parents": [ "5ef097dd7ba4eab8b4f0026d85fcef9fe23b821f" ], "author": { "name": "Gustavo F. Padovan", "email": "padovan@profusion.mobi", "time": "Fri Mar 05 13:42:58 2010 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Sat Mar 06 11:26:33 2010 -0800" }, "message": "printk: avoid warning when CONFIG_PRINTK is disabled\n\nkernel/printk.c:72: warning: `saved_console_loglevel\u0027 defined but not used\n\nSigned-off-by: Gustavo F. Padovan \u003cpadovan@profusion.mobi\u003e\nCc: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "9728e5d6e6c432ee8487c63ce6e479e2474d9945", "tree": "2cd7e9a9102649a36d52cbac918f045dcfaa08f2", "parents": [ "8aeee85a29e27e043db582bf2ae8e5f42767934f" ], "author": { "name": "Tetsuo Handa", "email": "penguin-kernel@I-love.SAKURA.ne.jp", "time": "Fri Mar 05 13:42:56 2010 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Sat Mar 06 11:26:33 2010 -0800" }, "message": "kernel/pid.c: update comment on find_task_by_pid_ns\n\ntasklist_lock does protect the task and its pid, it can\u0027t go away. The\nproblem is that find_pid_ns() itself is unsafe without rcu lock, it can\nrace with copy_process()-\u003efree_pid(any_pid).\n\nProtecting copy_process()-\u003efree_pid(any_pid) with tasklist_lock would make\nit possible to call find_task_by_pid_ns() under tasklist safely, but we\ndon\u0027t do so because we are trying to get rid of the read_lock sites of\ntasklist_lock.\n\nSigned-off-by: Tetsuo Handa \u003cpenguin-kernel@I-love.SAKURA.ne.jp\u003e\nCc: Oleg Nesterov \u003coleg@redhat.com\u003e\nCc: \"Paul E. McKenney\" \u003cpaulmck@us.ibm.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "8aeee85a29e27e043db582bf2ae8e5f42767934f", "tree": "fac5fc9b79dc272517918722e944b86f36a7e608", "parents": [ "78d7d407b62a021e6d2e8dc24c0b90e390ab58a1" ], "author": { "name": "Anton Blanchard", "email": "anton@samba.org", "time": "Fri Mar 05 13:42:55 2010 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Sat Mar 06 11:26:33 2010 -0800" }, "message": "panic: fix panic_timeout accuracy when running on a hypervisor\n\nI\u0027ve had some complaints about panic_timeout being wildly innacurate on\nshared processor PowerPC partitions (a 3 minute panic_timeout taking 30\nminutes).\n\nThe problem is we loop on mdelay(1) and with a 1ms in 10ms hypervisor\ntimeslice each of these will take 10ms (ie 10x) longer. I expect other\nplatforms with shared processor hypervisors will see the same issue.\n\nThis patch keeps the old behaviour if we have a panic_blink (only keyboard\nLEDs right now) and does 1 second mdelays if we don\u0027t.\n\nSigned-off-by: Anton Blanchard \u003canton@samba.org\u003e\nCc: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "78d7d407b62a021e6d2e8dc24c0b90e390ab58a1", "tree": "8c1074b84db4b977bad6802a3701e0113c0a7739", "parents": [ "d4bb527438b4181cd3c564ae04dd344c381283a1" ], "author": { "name": "Jiri Slaby", "email": "jslaby@suse.cz", "time": "Fri Mar 05 13:42:54 2010 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Sat Mar 06 11:26:33 2010 -0800" }, "message": "kernel core: use helpers for rlimits\n\nMake sure compiler won\u0027t do weird things with limits. E.g. fetching them\ntwice may return 2 different values after writable limits are implemented.\n\nI.e. either use rlimit helpers added in commit 3e10e716abf3 (\"resource:\nadd helpers for fetching rlimits\") or ACCESS_ONCE if not applicable.\n\nSigned-off-by: Jiri Slaby \u003cjslaby@suse.cz\u003e\nCc: Ingo Molnar \u003cmingo@elte.hu\u003e\nCc: Peter Zijlstra \u003cpeterz@infradead.org\u003e\nCc: Thomas Gleixner \u003ctglx@linutronix.de\u003e\nCc: john stultz \u003cjohnstul@us.ibm.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "d4bb527438b4181cd3c564ae04dd344c381283a1", "tree": "0e7afeb6b759f72b136d707db4e5725a92b0d777", "parents": [ "f3abd4f9531becb71626bd206955d47d5ea54f06" ], "author": { "name": "Jiri Slaby", "email": "jslaby@suse.cz", "time": "Fri Mar 05 13:42:53 2010 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Sat Mar 06 11:26:32 2010 -0800" }, "message": "posix-cpu-timers: cleanup rlimits usage\n\nFetch rlimit (both hard and soft) values only once and work on them. It\nremoves many accesses through sig structure and makes the code cleaner.\n\nMostly a preparation for writable resource limits support.\n\nSigned-off-by: Jiri Slaby \u003cjslaby@suse.cz\u003e\nCc: Ingo Molnar \u003cmingo@elte.hu\u003e\nCc: Peter Zijlstra \u003cpeterz@infradead.org\u003e\nCc: Thomas Gleixner \u003ctglx@linutronix.de\u003e\nCc: john stultz \u003cjohnstul@us.ibm.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "f3abd4f9531becb71626bd206955d47d5ea54f06", "tree": "512d5d72d02f6dae87af66c7e044d597eb7e067c", "parents": [ "9c03c383563f147907f1a90cf16f1e190e2f4aae" ], "author": { "name": "Thiago Farina", "email": "tfransosi@gmail.com", "time": "Fri Mar 05 13:42:52 2010 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Sat Mar 06 11:26:32 2010 -0800" }, "message": "kernel/exit.c: fix shadows sparse warning\n\nkernel/exit.c:1183:26: warning: symbol \u0027status\u0027 shadows an earlier one\nkernel/exit.c:1173:21: originally declared here\n\nSigned-off-by: Thiago Farina \u003ctfransosi@gmail.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "9c03c383563f147907f1a90cf16f1e190e2f4aae", "tree": "5aeff12a5a38ab6af49acaf909963d876df1ca61", "parents": [ "5f1664f92b2247111b7d37e454a050b76ac61b7f" ], "author": { "name": "Jaswinder Singh Rajput", "email": "jaswinder@kernel.org", "time": "Fri Mar 05 13:42:52 2010 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Sat Mar 06 11:26:32 2010 -0800" }, "message": "includecheck fix for kernel/params.c\n\nFix the following \u0027make includecheck\u0027 warning:\n kernel/params.c: linux/string.h is included more than once.\n\nSigned-off-by: Jaswinder Singh Rajput \u003cjaswinderrajput@gmail.com\u003e\nCc: André Goddard Rosa \u003candre.goddard@gmail.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" } ], "next": "5f1664f92b2247111b7d37e454a050b76ac61b7f" }