)]}' { "log": [ { "commit": "51b1bd2ace1595b72956224deda349efa880b693", "tree": "82732bb33d26379c05494dcdba8ea390ae0621db", "parents": [ "a63d83f427fbce97a6cea0db2e64b0eb8435cd10" ], "author": { "name": "David Rientjes", "email": "rientjes@google.com", "time": "Mon Aug 09 17:19:47 2010 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Mon Aug 09 20:45:02 2010 -0700" }, "message": "oom: deprecate oom_adj tunable\n\n/proc/pid/oom_adj is now deprecated so that that it may eventually be\nremoved. The target date for removal is August 2012.\n\nA warning will be printed to the kernel log if a task attempts to use this\ninterface. Future warning will be suppressed until the kernel is rebooted\nto prevent spamming the kernel log.\n\nSigned-off-by: David Rientjes \u003crientjes@google.com\u003e\nCc: Nick Piggin \u003cnpiggin@suse.de\u003e\nCc: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nCc: KOSAKI Motohiro \u003ckosaki.motohiro@jp.fujitsu.com\u003e\nCc: Oleg Nesterov \u003coleg@redhat.com\u003e\nCc: Balbir Singh \u003cbalbir@in.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": "a63d83f427fbce97a6cea0db2e64b0eb8435cd10", "tree": "8ac229cdf6e2289d97e82e35774057106fe7f4a2", "parents": [ "74bcbf40546bb7500f2a7ba4ff3cc056a6bd004a" ], "author": { "name": "David Rientjes", "email": "rientjes@google.com", "time": "Mon Aug 09 17:19:46 2010 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Mon Aug 09 20:45:02 2010 -0700" }, "message": "oom: badness heuristic rewrite\n\nThis a complete rewrite of the oom killer\u0027s badness() heuristic which is\nused to determine which task to kill in oom conditions. The goal is to\nmake it as simple and predictable as possible so the results are better\nunderstood and we end up killing the task which will lead to the most\nmemory freeing while still respecting the fine-tuning from userspace.\n\nInstead of basing the heuristic on mm-\u003etotal_vm for each task, the task\u0027s\nrss and swap space is used instead. This is a better indication of the\namount of memory that will be freeable if the oom killed task is chosen\nand subsequently exits. This helps specifically in cases where KDE or\nGNOME is chosen for oom kill on desktop systems instead of a memory\nhogging task.\n\nThe baseline for the heuristic is a proportion of memory that each task is\ncurrently using in memory plus swap compared to the amount of \"allowable\"\nmemory. \"Allowable,\" in this sense, means the system-wide resources for\nunconstrained oom conditions, the set of mempolicy nodes, the mems\nattached to current\u0027s cpuset, or a memory controller\u0027s limit. The\nproportion is given on a scale of 0 (never kill) to 1000 (always kill),\nroughly meaning that if a task has a badness() score of 500 that the task\nconsumes approximately 50% of allowable memory resident in RAM or in swap\nspace.\n\nThe proportion is always relative to the amount of \"allowable\" memory and\nnot the total amount of RAM systemwide so that mempolicies and cpusets may\noperate in isolation; they shall not need to know the true size of the\nmachine on which they are running if they are bound to a specific set of\nnodes or mems, respectively.\n\nRoot tasks are given 3% extra memory just like __vm_enough_memory()\nprovides in LSMs. In the event of two tasks consuming similar amounts of\nmemory, it is generally better to save root\u0027s task.\n\nBecause of the change in the badness() heuristic\u0027s baseline, it is also\nnecessary to introduce a new user interface to tune it. It\u0027s not possible\nto redefine the meaning of /proc/pid/oom_adj with a new scale since the\nABI cannot be changed for backward compatability. Instead, a new tunable,\n/proc/pid/oom_score_adj, is added that ranges from -1000 to +1000. It may\nbe used to polarize the heuristic such that certain tasks are never\nconsidered for oom kill while others may always be considered. The value\nis added directly into the badness() score so a value of -500, for\nexample, means to discount 50% of its memory consumption in comparison to\nother tasks either on the system, bound to the mempolicy, in the cpuset,\nor sharing the same memory controller.\n\n/proc/pid/oom_adj is changed so that its meaning is rescaled into the\nunits used by /proc/pid/oom_score_adj, and vice versa. Changing one of\nthese per-task tunables will rescale the value of the other to an\nequivalent meaning. Although /proc/pid/oom_adj was originally defined as\na bitshift on the badness score, it now shares the same linear growth as\n/proc/pid/oom_score_adj but with different granularity. This is required\nso the ABI is not broken with userspace applications and allows oom_adj to\nbe deprecated for future removal.\n\nSigned-off-by: David Rientjes \u003crientjes@google.com\u003e\nCc: Nick Piggin \u003cnpiggin@suse.de\u003e\nCc: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nCc: KOSAKI Motohiro \u003ckosaki.motohiro@jp.fujitsu.com\u003e\nCc: Oleg Nesterov \u003coleg@redhat.com\u003e\nCc: Balbir Singh \u003cbalbir@in.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": "0ea6e61122196509af82cc4f36cbdaacbefb8227", "tree": "1e6e65d3b73c9c620497966b1786f163a1782228", "parents": [ "d790d4d583aeaed9fc6f8a9f4d9f8ce6b1c15c7f" ], "author": { "name": "Justin P. Mattock", "email": "justinmattock@gmail.com", "time": "Fri Jul 23 20:51:24 2010 -0700" }, "committer": { "name": "Jiri Kosina", "email": "jkosina@suse.cz", "time": "Wed Aug 04 15:21:40 2010 +0200" }, "message": "Documentation: update broken web addresses.\n\nBelow you will find an updated version from the original series bunching all patches into one big patch\nupdating broken web addresses that are located in Documentation/*\nSome of the addresses date as far far back as 1995 etc... so searching became a bit difficult,\nthe best way to deal with these is to use web.archive.org to locate these addresses that are outdated.\nNow there are also some addresses pointing to .spec files some are located, but some(after searching\non the companies site)where still no where to be found. In this case I just changed the address\nto the company site this way the users can contact the company and they can locate them for the users.\n\nSigned-off-by: Justin P. Mattock \u003cjustinmattock@gmail.com\u003e\nSigned-off-by: Thomas Weber \u003cweber@corscience.de\u003e\nSigned-off-by: Mike Frysinger \u003cvapier.adi@gmail.com\u003e\nCc: Paulo Marques \u003cpmarques@grupopie.com\u003e\nCc: Randy Dunlap \u003crdunlap@xenotime.net\u003e\nCc: Michael Neuling \u003cmikey@neuling.org\u003e\nSigned-off-by: Jiri Kosina \u003cjkosina@suse.cz\u003e\n" }, { "commit": "f39d01be4c59a61a08d0cb53f615e7016b85d339", "tree": "6777590e3ff2ddf4df1d38444ba7d692cd463b7b", "parents": [ "54291263519ac2c9bdda68b23b02fef3808deed4", "7db82437cfcac4bdfe79a6323eb554fdfa271623" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu May 20 09:20:59 2010 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu May 20 09:20:59 2010 -0700" }, "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: (44 commits)\n vlynq: make whole Kconfig-menu dependant on architecture\n add descriptive comment for TIF_MEMDIE task flag declaration.\n EEPROM: max6875: Header file cleanup\n EEPROM: 93cx6: Header file cleanup\n EEPROM: Header file cleanup\n agp: use NULL instead of 0 when pointer is needed\n rtc-v3020: make bitfield unsigned\n PCI: make bitfield unsigned\n jbd2: use NULL instead of 0 when pointer is needed\n cciss: fix shadows sparse warning\n doc: inode uses a mutex instead of a semaphore.\n uml: i386: Avoid redefinition of NR_syscalls\n fix \"seperate\" typos in comments\n cocbalt_lcdfb: correct sections\n doc: Change urls for sparse\n Powerpc: wii: Fix typo in comment\n i2o: cleanup some exit paths\n Documentation/: it\u0027s -\u003e its where appropriate\n UML: Fix compiler warning due to missing task_struct declaration\n UML: add kernel.h include to signal.c\n ...\n" }, { "commit": "6e0b7b2c39b91b467270dd0bc383914f99e1fb28", "tree": "bdd28cb3ab5653404220d2bd9089203168ef869f", "parents": [ "e4e47eb15b7884963efe7f98231009c5770a2c3d", "4308ad801193f14ff42cb746da37cf07e35f0d08" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Wed May 19 17:09:40 2010 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Wed May 19 17:09:40 2010 -0700" }, "message": "Merge branch \u0027irq-core-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip\n\n* \u0027irq-core-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:\n genirq: Clear CPU mask in affinity_hint when none is provided\n genirq: Add CPU mask affinity hint\n genirq: Remove IRQF_DISABLED from core code\n genirq: Run irq handlers with interrupts disabled\n genirq: Introduce request_any_context_irq()\n genirq: Expose irq_desc-\u003enode in proc/irq\n\nFixed up trivial conflicts in Documentation/feature-removal-schedule.txt\n" }, { "commit": "34441427aab4bdb3069a4ffcda69a99357abcb2e", "tree": "3beebde910f25b0945e9105017fd743c9e5241a5", "parents": [ "3c904afd7358e9ef515eb5df36b6f25c2b7fc2da" ], "author": { "name": "Robin Holt", "email": "holt@sgi.com", "time": "Tue May 11 14:06:46 2010 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue May 11 17:33:41 2010 -0700" }, "message": "revert \"procfs: provide stack information for threads\" and its fixup commits\n\nOriginally, commit d899bf7b (\"procfs: provide stack information for\nthreads\") attempted to introduce a new feature for showing where the\nthreadstack was located and how many pages are being utilized by the\nstack.\n\nCommit c44972f1 (\"procfs: disable per-task stack usage on NOMMU\") was\napplied to fix the NO_MMU case.\n\nCommit 89240ba0 (\"x86, fs: Fix x86 procfs stack information for threads on\n64-bit\") was applied to fix a bug in ia32 executables being loaded.\n\nCommit 9ebd4eba7 (\"procfs: fix /proc/\u003cpid\u003e/stat stack pointer for kernel\nthreads\") was applied to fix a bug which had kernel threads printing a\nuserland stack address.\n\nCommit 1306d603f (\u0027proc: partially revert \"procfs: provide stack\ninformation for threads\"\u0027) was then applied to revert the stack pages\nbeing used to solve a significant performance regression.\n\nThis patch nearly undoes the effect of all these patches.\n\nThe reason for reverting these is it provides an unusable value in\nfield 28. For x86_64, a fork will result in the task-\u003estack_start\nvalue being updated to the current user top of stack and not the stack\nstart address. This unpredictability of the stack_start value makes\nit worthless. That includes the intended use of showing how much stack\nspace a thread has.\n\nOther architectures will get different values. As an example, ia64\ngets 0. The do_fork() and copy_process() functions appear to treat the\nstack_start and stack_size parameters as architecture specific.\n\nI only partially reverted c44972f1 (\"procfs: disable per-task stack usage\non NOMMU\") . If I had completely reverted it, I would have had to change\nmm/Makefile only build pagewalk.o when CONFIG_PROC_PAGE_MONITOR is\nconfigured. Since I could not test the builds without significant effort,\nI decided to not change mm/Makefile.\n\nI only partially reverted 89240ba0 (\"x86, fs: Fix x86 procfs stack\ninformation for threads on 64-bit\") . I left the KSTK_ESP() change in\nplace as that seemed worthwhile.\n\nSigned-off-by: Robin Holt \u003cholt@sgi.com\u003e\nCc: Stefani Seibold \u003cstefani@seibold.net\u003e\nCc: KOSAKI Motohiro \u003ckosaki.motohiro@jp.fujitsu.com\u003e\nCc: Michal Simek \u003cmonstr@monstr.eu\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": "a33f32244d8550da8b4a26e277ce07d5c6d158b5", "tree": "2b24b891e48ae791446fef6d1b9e520190c03c62", "parents": [ "6c9468e9eb1252eaefd94ce7f06e1be9b0b641b1" ], "author": { "name": "Francis Galiegue", "email": "fgaliegue@gmail.com", "time": "Fri Apr 23 00:08:02 2010 +0200" }, "committer": { "name": "Jiri Kosina", "email": "jkosina@suse.cz", "time": "Fri Apr 23 02:09:52 2010 +0200" }, "message": "Documentation/: it\u0027s -\u003e its where appropriate\n\nFix obvious cases of \"it\u0027s\" being used when \"its\" was meant.\n\nSigned-off-by: Francis Galiegue \u003cfgaliegue@gmail.com\u003e\nAcked-by: Randy Dunlap \u003crdunlap@xenotime.net\u003e\nSigned-off-by: Jiri Kosina \u003cjkosina@suse.cz\u003e\n" }, { "commit": "92d6b71ab906be706f3679353b30a8d2c3831144", "tree": "2b82cc7f065f947f4a6430e0de3bc63a4870907d", "parents": [ "220bf991b0366cc50a94feede3d7341fa5710ee4" ], "author": { "name": "Dimitri Sivanich", "email": "sivanich@sgi.com", "time": "Thu Mar 11 14:08:56 2010 -0800" }, "committer": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Wed Mar 24 14:10:03 2010 +0100" }, "message": "genirq: Expose irq_desc-\u003enode in proc/irq\n\nExpose irq_desc-\u003enode as /proc/irq/*/node.\n\nThis file provides device hardware locality information for apps\ndesiring to include hardware locality in irq mapping decisions.\n\nSigned-off-by: Dimitri Sivanich \u003csivanich@sgi.com\u003e\nCc: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\n" }, { "commit": "32e688b8c1afafa389223a4813b97e8c128a1636", "tree": "d93f4d6009e03fb00ad94ef49090ce95b34f5426", "parents": [ "31a2d31dbd01a7d530a748e6f708ba047c37fb90" ], "author": { "name": "Rob Landley", "email": "rob@landley.net", "time": "Mon Mar 15 15:21:31 2010 +0100" }, "committer": { "name": "Jiri Kosina", "email": "jkosina@suse.cz", "time": "Mon Mar 15 15:21:31 2010 +0100" }, "message": "Documentation/filesystems/proc.txt typo fix.\n\nTypo fix for a filename in procfs documentation.\n\nSigned-off-by: Rob Landley \u003crob@landley.net\u003e\nSigned-off-by: Jiri Kosina \u003cjkosina@suse.cz\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": "a1b57ac061b0e348c9a878f8fa3a93a67fe6af42", "tree": "8e904d9f3c3aae08f0bc8128eef81078653f611d", "parents": [ "72f0ba0252e7177965255ed2c663be126b6b5f91" ], "author": { "name": "Mel Gorman", "email": "mel@csn.ul.ie", "time": "Fri Mar 05 13:42:15 2010 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Sat Mar 06 11:26:26 2010 -0800" }, "message": "mm: document /proc/pagetypeinfo\n\nAdd documentation for /proc/pagetypeinfo.\n\nSigned-off-by: Mel Gorman \u003cmel@csn.ul.ie\u003e\nReviewed-by: Christoph Lameter \u003ccl@linux-foundation.org\u003e\nReviewed-by: KOSAKI Motohiro \u003ckosaki.motohiro@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": "b084d4353ff99d824d3bc5a5c2c22c70b1fba722", "tree": "8178db2b337fc8a36e6ca2e1fc2e7d7473957e27", "parents": [ "34e55232e59f7b19050267a05ff1226e5cd122a5" ], "author": { "name": "KAMEZAWA Hiroyuki", "email": "kamezawa.hiroyu@jp.fujitsu.com", "time": "Fri Mar 05 13:41:42 2010 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Sat Mar 06 11:26:24 2010 -0800" }, "message": "mm: count swap usage\n\nA frequent questions from users about memory management is what numbers of\nswap ents are user for processes. And this information will give some\nhints to oom-killer.\n\nBesides we can count the number of swapents per a process by scanning\n/proc/\u003cpid\u003e/smaps, this is very slow and not good for usual process\ninformation handler which works like \u0027ps\u0027 or \u0027top\u0027. (ps or top is now\nenough slow..)\n\nThis patch adds a counter of swapents to mm_counter and update is at each\nswap events. Information is exported via /proc/\u003cpid\u003e/status file as\n\n[kamezawa@bluextal memory]$ cat /proc/self/status\nName: cat\nState: R (running)\nTgid: 2910\nPid: 2910\nPPid: 2823\nTracerPid: 0\nUid: 500 500 500 500\nGid: 500 500 500 500\nFDSize: 256\nGroups: 500\nVmPeak: 82696 kB\nVmSize: 82696 kB\nVmLck: 0 kB\nVmHWM: 432 kB\nVmRSS: 432 kB\nVmData: 172 kB\nVmStk: 84 kB\nVmExe: 48 kB\nVmLib: 1568 kB\nVmPTE: 40 kB\nVmSwap: 0 kB \u003c\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d this.\n\n[akpm@linux-foundation.org: coding-style fixes]\nSigned-off-by: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nReviewed-by: Minchan Kim \u003cminchan.kim@gmail.com\u003e\nReviewed-by: Christoph Lameter \u003ccl@linux-foundation.org\u003e\nCc: Lee Schermerhorn \u003clee.schermerhorn@hp.com\u003e\nCc: David Rientjes \u003crientjes@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": "34e55232e59f7b19050267a05ff1226e5cd122a5", "tree": "6b94e776e87d2a2fe1ceca7c5606901575323900", "parents": [ "d559db086ff5be9bcc259e5aa50bf3d881eaf1d1" ], "author": { "name": "KAMEZAWA Hiroyuki", "email": "kamezawa.hiroyu@jp.fujitsu.com", "time": "Fri Mar 05 13:41:40 2010 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Sat Mar 06 11:26:24 2010 -0800" }, "message": "mm: avoid false sharing of mm_counter\n\nConsidering the nature of per mm stats, it\u0027s the shared object among\nthreads and can be a cache-miss point in the page fault path.\n\nThis patch adds per-thread cache for mm_counter. RSS value will be\ncounted into a struct in task_struct and synchronized with mm\u0027s one at\nevents.\n\nNow, in this patch, the event is the number of calls to handle_mm_fault.\nPer-thread value is added to mm at each 64 calls.\n\n rough estimation with small benchmark on parallel thread (2threads) shows\n [before]\n 4.5 cache-miss/faults\n [after]\n 4.0 cache-miss/faults\n Anyway, the most contended object is mmap_sem if the number of threads grows.\n\n[akpm@linux-foundation.org: coding-style fixes]\nSigned-off-by: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nCc: Minchan Kim \u003cminchan.kim@gmail.com\u003e\nCc: Christoph Lameter \u003ccl@linux-foundation.org\u003e\nCc: Lee Schermerhorn \u003clee.schermerhorn@hp.com\u003e\nCc: David Rientjes \u003crientjes@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": "cb2992a60b7e73fbabe9ffe54056eed0022f2ed2", "tree": "05796ba32714bf81868e376576aa1f7731b6ef30", "parents": [ "dfff0615d28bdb3e8d213e5537dd069265912667" ], "author": { "name": "Mulyadi Santosa", "email": "mulyadi.santosa@gmail.com", "time": "Thu Feb 18 01:22:40 2010 +0700" }, "committer": { "name": "Jiri Kosina", "email": "jkosina@suse.cz", "time": "Thu Feb 18 00:43:50 2010 +0100" }, "message": "doc: typo - Table 1-2 should refer to \"status\", not \"statm\"\n\nFixes a typo in proc.txt documentation. Table 1-2 should refer to\n\"status\", not \"statm\"\n\nSigned-off-by: Mulyadi Santosa \u003cmulyadi.santosa@gmail.com\u003e\nSigned-off-by: Jiri Kosina \u003cjkosina@suse.cz\u003e\n" }, { "commit": "1306d603fcf1f6682f8575d1ff23631a24184b21", "tree": "8e2278cfabf874cb16bf03bd182ae75b87055741", "parents": [ "f146aabfe921006b98dfa4a78506763aedfd3206" ], "author": { "name": "KOSAKI Motohiro", "email": "kosaki.motohiro@jp.fujitsu.com", "time": "Fri Jan 08 14:42:56 2010 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Mon Jan 11 09:34:06 2010 -0800" }, "message": "proc: partially revert \"procfs: provide stack information for threads\"\n\nCommit d899bf7b (procfs: provide stack information for threads) introduced\nto show stack information in /proc/{pid}/status. But it cause large\nperformance regression. Unfortunately /proc/{pid}/status is used ps\ncommand too and ps is one of most important component. Because both to\ntake mmap_sem and page table walk are heavily operation.\n\nIf many process run, the ps performance is,\n\n[before d899bf7b]\n\n% perf stat ps \u003e/dev/null\n\n Performance counter stats for \u0027ps\u0027:\n\n 4090.435806 task-clock-msecs # 0.032 CPUs\n 229 context-switches # 0.000 M/sec\n 0 CPU-migrations # 0.000 M/sec\n 234 page-faults # 0.000 M/sec\n 8587565207 cycles # 2099.425 M/sec\n 9866662403 instructions # 1.149 IPC\n 3789415411 cache-references # 926.409 M/sec\n 30419509 cache-misses # 7.437 M/sec\n\n 128.859521955 seconds time elapsed\n\n[after d899bf7b]\n\n% perf stat ps \u003e /dev/null\n\n Performance counter stats for \u0027ps\u0027:\n\n 4305.081146 task-clock-msecs # 0.028 CPUs\n 480 context-switches # 0.000 M/sec\n 2 CPU-migrations # 0.000 M/sec\n 237 page-faults # 0.000 M/sec\n 9021211334 cycles # 2095.480 M/sec\n 10605887536 instructions # 1.176 IPC\n 3612650999 cache-references # 839.160 M/sec\n 23917502 cache-misses # 5.556 M/sec\n\n 152.277819582 seconds time elapsed\n\nThus, this patch revert it. Fortunately /proc/{pid}/task/{tid}/smaps\nprovide almost same information. we can use it.\n\nCommit d899bf7b introduced two features:\n\n 1) Add the annotattion of [thread stack: xxxx] mark to\n /proc/{pid}/task/{tid}/maps.\n 2) Add StackUsage field to /proc/{pid}/status.\n\nI only revert (2), because I haven\u0027t seen (1) cause regression.\n\nSigned-off-by: KOSAKI Motohiro \u003ckosaki.motohiro@jp.fujitsu.com\u003e\nCc: Stefani Seibold \u003cstefani@seibold.net\u003e\nCc: Ingo Molnar \u003cmingo@elte.hu\u003e\nCc: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nCc: Alexey Dobriyan \u003cadobriyan@gmail.com\u003e\nCc: \"Eric W. Biederman\" \u003cebiederm@xmission.com\u003e\nCc: Randy Dunlap \u003crandy.dunlap@oracle.com\u003e\nCc: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nCc: Andi Kleen \u003candi@firstfloor.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "4614a696bd1c3a9af3a08f0e5874830a85b889d4", "tree": "0b363d89ce612ab8557d49ab8b0f49b8520ffa66", "parents": [ "7e1e0ef22c9ba9f797d7c4448feee722584bba5c" ], "author": { "name": "john stultz", "email": "johnstul@us.ibm.com", "time": "Mon Dec 14 18:00:05 2009 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Dec 15 08:53:24 2009 -0800" }, "message": "procfs: allow threads to rename siblings via /proc/pid/tasks/tid/comm\n\nSetting a thread\u0027s comm to be something unique is a very useful ability\nand is helpful for debugging complicated threaded applications. However\ncurrently the only way to set a thread name is for the thread to name\nitself via the PR_SET_NAME prctl.\n\nHowever, there may be situations where it would be advantageous for a\nthread dispatcher to be naming the threads its managing, rather then\nhaving the threads self-describe themselves. This sort of behavior is\navailable on other systems via the pthread_setname_np() interface.\n\nThis patch exports a task\u0027s comm via proc/pid/comm and\nproc/pid/task/tid/comm interfaces, and allows thread siblings to write to\nthese values.\n\n[akpm@linux-foundation.org: cleanups]\nSigned-off-by: John Stultz \u003cjohnstul@us.ibm.com\u003e\nCc: Andi Kleen \u003candi@firstfloor.org\u003e\nCc: Arjan van de Ven \u003carjan@infradead.org\u003e\nCc: Mike Fulton \u003cfultonm@ca.ibm.com\u003e\nCc: Sean Foley \u003cSean_Foley@ca.ibm.com\u003e\nCc: Darren Hart \u003cdvhltc@us.ibm.com\u003e\nCc: KOSAKI Motohiro \u003ckosaki.motohiro@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": "e3cc2226e99cfadbf300dde892c4a16d742a0856", "tree": "88eb2361112f7147d11ccc04e3a511edd7a51078", "parents": [ "bfc9dcabd513334c1d888ab66f7b7d84a3159571" ], "author": { "name": "Luis Garces-Erice", "email": "lge@ieee.org", "time": "Sun Dec 06 18:30:44 2009 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Wed Dec 09 18:59:52 2009 -0800" }, "message": "Doc: better explanation of procs_running\n\nthe description in Documentation/filesystems/proc.txt of the\nprocs_running entry in /proc/stat is confusing (according to that\ndescription, it looks as if procs_running could only be a number\nbetween 0 and the number of CPUs).\n\nChanged it to a more accurate description in the patch attached.\n\nSigned-off-by: Randy Dunlap \u003crandy.dunlap@oracle.com\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "ce0e7b28fb75cb003cfc8d0238613aaf1c55e797", "tree": "e70bec2040045b68876d85036756bc046b5d2742", "parents": [ "0b9e31e9264f1bad89856afb96da1688292f13b4" ], "author": { "name": "Ryota Ozaki", "email": "ozaki.ryota@gmail.com", "time": "Sat Oct 24 01:20:10 2009 +0900" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Sun Oct 25 17:31:30 2009 +0100" }, "message": "sched, cpuacct: Fix niced guest time accounting\n\nCPU time of a guest is always accounted in \u0027user\u0027 time\nwithout concern for the nice value of its counterpart\nprocess although the guest is scheduled under the nice\nvalue.\n\nThis patch fixes the defect and accounts cpu time of\na niced guest in \u0027nice\u0027 time as same as a niced process.\n\nAnd also the patch adds \u0027guest_nice\u0027 to cpuacct. The\nvalue provides niced guest cpu time which is like \u0027nice\u0027\nto \u0027user\u0027.\n\nThe original discussions can be found here:\n\n http://www.mail-archive.com/kvm@vger.kernel.org/msg23982.html\n http://www.mail-archive.com/kvm@vger.kernel.org/msg23860.html\n\nSigned-off-by: Ryota Ozaki \u003cozaki.ryota@gmail.com\u003e\nAcked-by: Avi Kivity \u003cavi@redhat.com\u003e\nCc: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nLKML-Reference: \u003c1256314810-7897-1-git-send-email-ozaki.ryota@gmail.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "296c355cd6443d89fa251885a8d78778fe111dc4", "tree": "5cf7c8b115617dc3829a16a5969894d37b73173c", "parents": [ "90576c0b9a0b5323fc4bd7f23f49be0d234f36d1" ], "author": { "name": "Theodore Ts\u0027o", "email": "tytso@mit.edu", "time": "Wed Sep 30 00:32:42 2009 -0400" }, "committer": { "name": "Theodore Ts\u0027o", "email": "tytso@mit.edu", "time": "Wed Sep 30 00:32:42 2009 -0400" }, "message": "ext4: Use tracepoints for mb_history trace file\n\nThe /proc/fs/ext4/\u003cdev\u003e/mb_history was maintained manually, and had a\nnumber of problems: it required a largish amount of memory to be\nallocated for each ext4 filesystem, and the s_mb_history_lock\nintroduced a CPU contention problem. \n\nBy ripping out the mb_history code and replacing it with ftrace\ntracepoints, and we get more functionality: timestamps, event\nfiltering, the ability to correlate mballoc history with other ext4\ntracepoints, etc.\n\nSigned-off-by: \"Theodore Ts\u0027o\" \u003ctytso@mit.edu\u003e\n" }, { "commit": "d899bf7b55f503ba7d3d07ed27c3a37e270fa7db", "tree": "32a5ee7816b2f0cb3261dcca8102b9cafe9251bd", "parents": [ "cba8aafe1e07dfc8bae5ba78be8e02883bd34d31" ], "author": { "name": "Stefani Seibold", "email": "stefani@seibold.net", "time": "Tue Sep 22 16:45:40 2009 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Wed Sep 23 07:39:41 2009 -0700" }, "message": "procfs: provide stack information for threads\n\nA patch to give a better overview of the userland application stack usage,\nespecially for embedded linux.\n\nCurrently you are only able to dump the main process/thread stack usage\nwhich is showed in /proc/pid/status by the \"VmStk\" Value. But you get no\ninformation about the consumed stack memory of the the threads.\n\nThere is an enhancement in the /proc/\u003cpid\u003e/{task/*,}/*maps and which marks\nthe vm mapping where the thread stack pointer reside with \"[thread stack\nxxxxxxxx]\". xxxxxxxx is the maximum size of stack. This is a value\ninformation, because libpthread doesn\u0027t set the start of the stack to the\ntop of the mapped area, depending of the pthread usage.\n\nA sample output of /proc/\u003cpid\u003e/task/\u003ctid\u003e/maps looks like:\n\n08048000-08049000 r-xp 00000000 03:00 8312 /opt/z\n08049000-0804a000 rw-p 00001000 03:00 8312 /opt/z\n0804a000-0806b000 rw-p 00000000 00:00 0 [heap]\na7d12000-a7d13000 ---p 00000000 00:00 0\na7d13000-a7f13000 rw-p 00000000 00:00 0 [thread stack: 001ff4b4]\na7f13000-a7f14000 ---p 00000000 00:00 0\na7f14000-a7f36000 rw-p 00000000 00:00 0\na7f36000-a8069000 r-xp 00000000 03:00 4222 /lib/libc.so.6\na8069000-a806b000 r--p 00133000 03:00 4222 /lib/libc.so.6\na806b000-a806c000 rw-p 00135000 03:00 4222 /lib/libc.so.6\na806c000-a806f000 rw-p 00000000 00:00 0\na806f000-a8083000 r-xp 00000000 03:00 14462 /lib/libpthread.so.0\na8083000-a8084000 r--p 00013000 03:00 14462 /lib/libpthread.so.0\na8084000-a8085000 rw-p 00014000 03:00 14462 /lib/libpthread.so.0\na8085000-a8088000 rw-p 00000000 00:00 0\na8088000-a80a4000 r-xp 00000000 03:00 8317 /lib/ld-linux.so.2\na80a4000-a80a5000 r--p 0001b000 03:00 8317 /lib/ld-linux.so.2\na80a5000-a80a6000 rw-p 0001c000 03:00 8317 /lib/ld-linux.so.2\nafaf5000-afb0a000 rw-p 00000000 00:00 0 [stack]\nffffe000-fffff000 r-xp 00000000 00:00 0 [vdso]\n\nAlso there is a new entry \"stack usage\" in /proc/\u003cpid\u003e/{task/*,}/status\nwhich will you give the current stack usage in kb.\n\nA sample output of /proc/self/status looks like:\n\nName:\tcat\nState:\tR (running)\nTgid:\t507\nPid:\t507\n.\n.\n.\nCapBnd:\tfffffffffffffeff\nvoluntary_ctxt_switches:\t0\nnonvoluntary_ctxt_switches:\t0\nStack usage:\t12 kB\n\nI also fixed stack base address in /proc/\u003cpid\u003e/{task/*,}/stat to the base\naddress of the associated thread stack and not the one of the main\nprocess. This makes more sense.\n\n[akpm@linux-foundation.org: fs/proc/array.c now needs walk_page_range()]\nSigned-off-by: Stefani Seibold \u003cstefani@seibold.net\u003e\nCc: Ingo Molnar \u003cmingo@elte.hu\u003e\nCc: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nCc: Alexey Dobriyan \u003cadobriyan@gmail.com\u003e\nCc: \"Eric W. Biederman\" \u003cebiederm@xmission.com\u003e\nCc: Randy Dunlap \u003crandy.dunlap@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": "495789a51a91cb8c015d8d77fecbac1caf20b186", "tree": "ac2a71ed40ed84f5673326aa6bf7f278b54d989a", "parents": [ "28b83c5193e7ab951e402252278f2cc79dc4d298" ], "author": { "name": "KOSAKI Motohiro", "email": "kosaki.motohiro@jp.fujitsu.com", "time": "Mon Sep 21 17:03:14 2009 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Sep 22 07:17:39 2009 -0700" }, "message": "oom: make oom_score to per-process value\n\noom-killer kills a process, not task. Then oom_score should be calculated\nas per-process too. it makes consistency more and makes speed up\nselect_bad_process().\n\nSigned-off-by: KOSAKI Motohiro \u003ckosaki.motohiro@jp.fujitsu.com\u003e\nCc: Paul Menage \u003cmenage@google.com\u003e\nCc: David Rientjes \u003crientjes@google.com\u003e\nCc: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.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": "398499d5f3613c47f2143b8c54a04efb5d7a6da9", "tree": "0b337ca1d0e20caa2295c159d5c0deadf362e4a0", "parents": [ "7103ad323b1ae32bedc3267402117e2f8b45e48d" ], "author": { "name": "Moussa A. Ba", "email": "moussa.a.ba@gmail.com", "time": "Mon Sep 21 17:02:29 2009 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Sep 22 07:17:33 2009 -0700" }, "message": "pagemap clear_refs: modify to specify anon or mapped vma clearing\n\nThe patch makes the clear_refs more versatile in adding the option to\nselect anonymous pages or file backed pages for clearing. This addition\nhas a measurable impact on user space application performance as it\ndecreases the number of pagewalks in scenarios where one is only\ninterested in a specific type of page (anonymous or file mapped).\n\nThe patch adds anonymous and file backed filters to the clear_refs interface.\n\necho 1 \u003e /proc/PID/clear_refs resets the bits on all pages\necho 2 \u003e /proc/PID/clear_refs resets the bits on anonymous pages only\necho 3 \u003e /proc/PID/clear_refs resets the bits on file backed pages only\n\nAny other value is ignored\n\nSigned-off-by: Moussa A. Ba \u003cmoussa.a.ba@gmail.com\u003e\nSigned-off-by: Jared E. Hulbert \u003cjaredeh@gmail.com\u003e\nAcked-by: David Rientjes \u003crientjes@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": "c574358e8b48adf646f9d5ef70dc76c5d4ad9387", "tree": "1c83f7fe3831c59ba0ceca9b384ec990fcf60e5a", "parents": [ "580be0837a7a59b207c3d5c661d044d8dd0a6a30" ], "author": { "name": "Eric Dumazet", "email": "eric.dumazet@gmail.com", "time": "Mon Sep 21 17:01:06 2009 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Sep 22 07:17:24 2009 -0700" }, "message": "proc: document `guest\u0027 column in /proc/stat\n\nWe added a new column in cpuX lines of /proc/stat, to show the amount of\ntime spent by a cpu servicing a guest, without updating\nDocumentation/filesystems/proc.txt\n\nSigned-off-by: Eric Dumazet \u003ceric.dumazet@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": "0753ba01e126020bf0f8150934903b48935b697d", "tree": "fbfd7e2d0abbe724a8c5e0e17fb9af522ed2e097", "parents": [ "89a4eb4b66e8f4d395e14a14d262dac4d6ca52f0" ], "author": { "name": "KOSAKI Motohiro", "email": "kosaki.motohiro@jp.fujitsu.com", "time": "Tue Aug 18 14:11:10 2009 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Aug 18 16:31:13 2009 -0700" }, "message": "mm: revert \"oom: move oom_adj value\"\n\nThe commit 2ff05b2b (oom: move oom_adj value) moveed the oom_adj value to\nthe mm_struct. It was a very good first step for sanitize OOM.\n\nHowever Paul Menage reported the commit makes regression to his job\nscheduler. Current OOM logic can kill OOM_DISABLED process.\n\nWhy? His program has the code of similar to the following.\n\n\t...\n\tset_oom_adj(OOM_DISABLE); /* The job scheduler never killed by oom */\n\t...\n\tif (vfork() \u003d\u003d 0) {\n\t\tset_oom_adj(0); /* Invoked child can be killed */\n\t\texecve(\"foo-bar-cmd\");\n\t}\n\t....\n\nvfork() parent and child are shared the same mm_struct. then above\nset_oom_adj(0) doesn\u0027t only change oom_adj for vfork() child, it\u0027s also\nchange oom_adj for vfork() parent. Then, vfork() parent (job scheduler)\nlost OOM immune and it was killed.\n\nActually, fork-setting-exec idiom is very frequently used in userland program.\nWe must not break this assumption.\n\nThen, this patch revert commit 2ff05b2b and related commit.\n\nReverted commit list\n---------------------\n- commit 2ff05b2b4e (oom: move oom_adj value from task_struct to mm_struct)\n- commit 4d8b9135c3 (oom: avoid unnecessary mm locking and scanning for OOM_DISABLE)\n- commit 8123681022 (oom: only oom kill exiting tasks with attached memory)\n- commit 933b787b57 (mm: copy over oom_adj value at fork time)\n\nSigned-off-by: KOSAKI Motohiro \u003ckosaki.motohiro@jp.fujitsu.com\u003e\nCc: Paul Menage \u003cmenage@google.com\u003e\nCc: David Rientjes \u003crientjes@google.com\u003e\nCc: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nCc: Rik van Riel \u003criel@redhat.com\u003e\nCc: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\nCc: Oleg Nesterov \u003coleg@redhat.com\u003e\nCc: Nick Piggin \u003cnpiggin@suse.de\u003e\nCc: Mel Gorman \u003cmel@csn.ul.ie\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "349888ee7b2c1ffb44c806adf6f4289ca4a6fd42", "tree": "841552b3ed0c3140be1904c82ffc0149f32491b1", "parents": [ "2f6d311080c36e30a5fa87adca550dc6b51dbfdc" ], "author": { "name": "Stefani Seibold", "email": "stefani@seibold.net", "time": "Wed Jun 17 16:26:01 2009 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Jun 18 13:03:41 2009 -0700" }, "message": "proc.txt: update kernel filesystem/proc.txt documentation\n\nAn update for the \"Process-Specific Subdirectories\" section to reflect the\nchanges till kernel 2.6.30.\n\nSigned-off-by: Stefani Seibold \u003cstefani@seibold.net\u003e\nCc: Randy Dunlap \u003crandy.dunlap@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": "d3d64df21d3d0de675a0d3ffa7c10514f3644b30", "tree": "7ea3c79d8adb2c0282327f9ce63208978857eb07", "parents": [ "9d9b8fb0e5ebf4b0398e579f6061d4451fea3242" ], "author": { "name": "Keika Kobayashi", "email": "kobayashi.kk@ncos.nec.co.jp", "time": "Wed Jun 17 16:25:55 2009 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Jun 18 13:03:41 2009 -0700" }, "message": "proc: export statistics for softirq to /proc\n\nExport statistics for softirq in /proc/softirqs and /proc/stat.\n\n1. /proc/softirqs\nImplement /proc/softirqs which shows the number of softirq\nfor each CPU like /proc/interrupts.\n\n2. /proc/stat\nAdd the \"softirq\" line to /proc/stat.\nThis line shows the number of softirq for all cpu.\nThe first column is the total of all softirqs and\neach subsequent column is the total for particular softirq.\n\n[kosaki.motohiro@jp.fujitsu.com: remove redundant for_each_possible_cpu() loop]\nSigned-off-by: Keika Kobayashi \u003ckobayashi.kk@ncos.nec.co.jp\u003e\nReviewed-by: Hiroshi Shimamoto \u003ch-shimamoto@ct.jp.nec.com\u003e\nCc: KOSAKI Motohiro \u003ckosaki.motohiro@jp.fujitsu.com\u003e\nCc: Ingo Molnar \u003cmingo@elte.hu\u003e\nCc: Eric Dumazet \u003cdada1@cosmosbay.com\u003e\nCc: Alexey Dobriyan \u003cadobriyan@gmail.com\u003e\nSigned-off-by: KOSAKI Motohiro \u003ckosaki.motohiro@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": "2ff05b2b4eac2e63d345fc731ea151a060247f53", "tree": "1840bc2d3b381eca5d39869499339b0fcc6eabbf", "parents": [ "c9e444103b5e7a5a3519f9913f59767f92e33baf" ], "author": { "name": "David Rientjes", "email": "rientjes@google.com", "time": "Tue Jun 16 15:32:56 2009 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Jun 16 19:47:43 2009 -0700" }, "message": "oom: move oom_adj value from task_struct to mm_struct\n\nThe per-task oom_adj value is a characteristic of its mm more than the\ntask itself since it\u0027s not possible to oom kill any thread that shares the\nmm. If a task were to be killed while attached to an mm that could not be\nfreed because another thread were set to OOM_DISABLE, it would have\nneedlessly been terminated since there is no potential for future memory\nfreeing.\n\nThis patch moves oomkilladj (now more appropriately named oom_adj) from\nstruct task_struct to struct mm_struct. This requires task_lock() on a\ntask to check its oom_adj value to protect against exec, but it\u0027s already\nnecessary to take the lock when dereferencing the mm to find the total VM\nsize for the badness heuristic.\n\nThis fixes a livelock if the oom killer chooses a task and another thread\nsharing the same memory has an oom_adj value of OOM_DISABLE. This occurs\nbecause oom_kill_task() repeatedly returns 1 and refuses to kill the\nchosen task while select_bad_process() will repeatedly choose the same\ntask during the next retry.\n\nTaking task_lock() in select_bad_process() to check for OOM_DISABLE and in\noom_kill_task() to check for threads sharing the same memory will be\nremoved in the next patch in this series where it will no longer be\nnecessary.\n\nWriting to /proc/pid/oom_adj for a kthread will now return -EINVAL since\nthese threads are immune from oom killing already. They simply report an\noom_adj value of OOM_DISABLE.\n\nCc: Nick Piggin \u003cnpiggin@suse.de\u003e\nCc: Rik van Riel \u003criel@redhat.com\u003e\nCc: Mel Gorman \u003cmel@csn.ul.ie\u003e\nSigned-off-by: David Rientjes \u003crientjes@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": "19f594600110377ec4037fdf7fb93a25ec516212", "tree": "bf88707b65f0138b754d896300976e474098a50d", "parents": [ "19af5cdb7c79ff5ec96a99893ffb7f894f4a3dc1" ], "author": { "name": "Matt LaPlante", "email": "kernel1@cyberdogtech.com", "time": "Mon Apr 27 15:06:31 2009 +0200" }, "committer": { "name": "Jiri Kosina", "email": "jkosina@suse.cz", "time": "Fri Jun 12 18:01:47 2009 +0200" }, "message": "trivial: Miscellaneous documentation typo fixes\n\nFix various typos in documentation txts.\n\nSigned-off-by: Matt LaPlante \u003ckernel1@cyberdogtech.com\u003e\nSigned-off-by: Jiri Kosina \u003cjkosina@suse.cz\u003e\n" }, { "commit": "760df93ecdd59fc1c213a491b5adee79f53606da", "tree": "305a4e0fae43549eb24a3ebcf9bcc15a16ef2138", "parents": [ "70eed8d06601ca3810a0e56035eae6496d57856b" ], "author": { "name": "Shen Feng", "email": "shen@cn.fujitsu.com", "time": "Thu Apr 02 16:57:20 2009 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Apr 02 19:04:53 2009 -0700" }, "message": "documentation: update Documentation/filesystem/proc.txt and Documentation/sysctls\n\nNow /proc/sys is described in many places and much information is\nredundant. This patch updates the proc.txt and move the /proc/sys\ndesciption out to the files in Documentation/sysctls.\n\nDetails are:\n\nmerge\n- 2.1 /proc/sys/fs - File system data\n- 2.11 /proc/sys/fs/mqueue - POSIX message queues filesystem\n- 2.17 /proc/sys/fs/epoll - Configuration options for the epoll interface\nwith Documentation/sysctls/fs.txt.\n\nremove\n- 2.2 /proc/sys/fs/binfmt_misc - Miscellaneous binary formats\nsince it\u0027s not better then the Documentation/binfmt_misc.txt.\n\nmerge\n- 2.3 /proc/sys/kernel - general kernel parameters\nwith Documentation/sysctls/kernel.txt\n\nremove\n- 2.5 /proc/sys/dev - Device specific parameters\nsince it\u0027s obsolete the sysfs is used now.\n\nremove\n- 2.6 /proc/sys/sunrpc - Remote procedure calls\nsince it\u0027s not better then the Documentation/sysctls/sunrpc.txt\n\nmove\n- 2.7 /proc/sys/net - Networking stuff\n- 2.9 Appletalk\n- 2.10 IPX\nto newly created Documentation/sysctls/net.txt.\n\nremove\n- 2.8 /proc/sys/net/ipv4 - IPV4 settings\nsince it\u0027s not better then the Documentation/networking/ip-sysctl.txt.\n\nadd\n- Chapter 3 Per-Process Parameters\nto descibe /proc/\u003cpid\u003e/xxx parameters.\n\nSigned-off-by: Shen Feng \u003cshen@cn.fujitsu.com\u003e\nCc: Randy Dunlap \u003crandy.dunlap@oracle.com\u003e\nCc: \"David S. Miller\" \u003cdavem@davemloft.net\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "b713a5ec55bf73c833f9883cdd761b20ee61a1ab", "tree": "77bbc689f442cad3ce8ca21d7b2c7cea2738d519", "parents": [ "3197ebdb130473a92760100cbfe0d7e671838f48" ], "author": { "name": "Theodore Ts\u0027o", "email": "tytso@mit.edu", "time": "Tue Mar 31 09:11:14 2009 -0400" }, "committer": { "name": "Theodore Ts\u0027o", "email": "tytso@mit.edu", "time": "Tue Mar 31 09:11:14 2009 -0400" }, "message": "ext4: remove /proc tuning knobs\n\nRemove tuning knobs in /proc/fs/ext4/\u003cdev/* since they have been\nreplaced by knobs in sysfs at /sys/fs/ext4/\u003cdev\u003e/*.\n\nSigned-off-by: \"Theodore Ts\u0027o\" \u003ctytso@mit.edu\u003e\n" }, { "commit": "e9c6a586f5335938b11be0a2554af58a2860e4ef", "tree": "056515e9973c0b312983edbb63cfaadd64a129b9", "parents": [ "69145635d4db0a0382885b14634aa5b721f3aa1a" ], "author": { "name": "Stanislaw Gruszka", "email": "sgruszka@redhat.com", "time": "Wed Mar 18 18:51:06 2009 -0700" }, "committer": { "name": "David S. Miller", "email": "davem@davemloft.net", "time": "Wed Mar 18 18:51:06 2009 -0700" }, "message": "net: Document /proc/sys/net/core/netdev_budget\n\nThe NAPI poll parameter netdev_budget is not documented in\nkernel-docs. Since it may have a substantial effect on at least some\nnetwork loads, it should be.\n\nSigned-off-by: Stanislaw Gruszka \u003csgruszka@redhat.com\u003e \nSigned-off-by: David S. Miller \u003cdavem@davemloft.net\u003e\n" }, { "commit": "9e9e3cbc62da43c66e894d5a61fa08b427e25202", "tree": "5dafdeb919c99a014e694745c2dfe4c46ca6f69e", "parents": [ "dc19835df6c47ff676ad6c98722d5e529db5d74c" ], "author": { "name": "Evgeniy Polyakov", "email": "zbr@ioremap.net", "time": "Thu Jan 29 14:25:09 2009 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Jan 29 18:04:43 2009 -0800" }, "message": "mm: OOM documentation update\n\nSigned-off-by: Evgeniy Polyakov \u003czbr@ioremap.net\u003e\nAcked-by: David Rientjes \u003crientjes@google.com\u003e\nCc: Randy Dunlap \u003crandy.dunlap@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": "db0fb1848a645b0b1b033765f3a5244e7afd2e3c", "tree": "cf6b63e52fad2fa626e2a08251815f07626682dd", "parents": [ "b5db0e38653bfada34a92f360b4111566ede3842" ], "author": { "name": "Peter W Morreale", "email": "pmorreale@novell.com", "time": "Thu Jan 15 13:50:42 2009 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Jan 15 16:39:35 2009 -0800" }, "message": "Update of Documentation: vm.txt and proc.txt\n\nUpdate Documentation/sysctl/vm.txt and Documentation/filesystems/proc.txt.\n More specifically, the section on /proc/sys/vm in\nDocumentation/filesystems/proc.txt was removed and a link to\nDocumentation/sysctl/vm.txt added.\n\nMost of the verbiage from proc.txt was simply moved in vm.txt, with new\naddtional text for \"swappiness\" and \"stat_interval\".\n\nSigned-off-by: Peter W Morreale \u003cpmorreale@novell.com\u003e\nAcked-by: Randy Dunlap \u003crandy.dunlap@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": "a0c9f240a992c4c2b6ac40324ece27475cf3b71a", "tree": "e42e5231d0e551b1b1f726c06c2ca27c510efb7a", "parents": [ "5bb47b9ff3d16d40f8d45380b373497a545fa280", "230e40fbda242544389a5428a2efac568178ddfe" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Wed Jan 07 12:01:06 2009 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Wed Jan 07 12:01:06 2009 -0800" }, "message": "Merge branch \u0027proc-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/adobriyan/proc\n\n* \u0027proc-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/adobriyan/proc:\n proc: remove write-only variable in proc_pident_lookup()\n proc: fix sparse warning\n proc: add /proc/*/stack\n proc: remove \u0027##\u0027 usage\n proc: remove useless WARN_ONs\n proc: stop using BKL\n" }, { "commit": "2da02997e08d3efe8174c7a47696e6f7cbe69ba9", "tree": "2e52d9346c52dda83dc8cc9626cbe302e026ad9a", "parents": [ "364aeb2849789b51bf4b9af2ddd02fee7285c54e" ], "author": { "name": "David Rientjes", "email": "rientjes@google.com", "time": "Tue Jan 06 14:39:31 2009 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Jan 06 15:59:03 2009 -0800" }, "message": "mm: add dirty_background_bytes and dirty_bytes sysctls\n\nThis change introduces two new sysctls to /proc/sys/vm:\ndirty_background_bytes and dirty_bytes.\n\ndirty_background_bytes is the counterpart to dirty_background_ratio and\ndirty_bytes is the counterpart to dirty_ratio.\n\nWith growing memory capacities of individual machines, it\u0027s no longer\nsufficient to specify dirty thresholds as a percentage of the amount of\ndirtyable memory over the entire system.\n\ndirty_background_bytes and dirty_bytes specify quantities of memory, in\nbytes, that represent the dirty limits for the entire system. If either\nof these values is set, its value represents the amount of dirty memory\nthat is needed to commence either background or direct writeback.\n\nWhen a `bytes\u0027 or `ratio\u0027 file is written, its counterpart becomes a\nfunction of the written value. For example, if dirty_bytes is written to\nbe 8096, 8K of memory is required to commence direct writeback.\ndirty_ratio is then functionally equivalent to 8K / the amount of\ndirtyable memory:\n\n\tdirtyable_memory \u003d free pages + mapped pages + file cache\n\n\tdirty_background_bytes \u003d dirty_background_ratio * dirtyable_memory\n\t\t-or-\n\tdirty_background_ratio \u003d dirty_background_bytes / dirtyable_memory\n\n\t\tAND\n\n\tdirty_bytes \u003d dirty_ratio * dirtyable_memory\n\t\t-or-\n\tdirty_ratio \u003d dirty_bytes / dirtyable_memory\n\nOnly one of dirty_background_bytes and dirty_background_ratio may be\nspecified at a time, and only one of dirty_bytes and dirty_ratio may be\nspecified. When one sysctl is written, the other appears as 0 when read.\n\nThe `bytes\u0027 files operate on a page size granularity since dirty limits\nare compared with ZVC values, which are in page units.\n\nPrior to this change, the minimum dirty_ratio was 5 as implemented by\nget_dirty_limits() although /proc/sys/vm/dirty_ratio would show any user\nwritten value between 0 and 100. This restriction is maintained, but\ndirty_bytes has a lower limit of only one page.\n\nAlso prior to this change, the dirty_background_ratio could not equal or\nexceed dirty_ratio. This restriction is maintained in addition to\nrestricting dirty_background_bytes. If either background threshold equals\nor exceeds that of the dirty threshold, it is implicitly set to half the\ndirty threshold.\n\nAcked-by: Peter Zijlstra \u003cpeterz@infradead.org\u003e\nCc: Dave Chinner \u003cdavid@fromorbit.com\u003e\nCc: Christoph Lameter \u003ccl@linux-foundation.org\u003e\nSigned-off-by: David Rientjes \u003crientjes@google.com\u003e\nCc: Andrea Righi \u003crighi.andrea@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": "2ec220e27f5040aec1e88901c1b6ea3d135787ad", "tree": "06ed111c8e331d47927d9b46386f4063b74ec419", "parents": [ "631f9c1868b970197747c80fc5168ad7d9fd5d53" ], "author": { "name": "Ken Chen", "email": "kenchen@google.com", "time": "Mon Nov 10 11:26:08 2008 +0300" }, "committer": { "name": "Alexey Dobriyan", "email": "adobriyan@gmail.com", "time": "Mon Jan 05 12:27:44 2009 +0300" }, "message": "proc: add /proc/*/stack\n\n/proc/*/stack adds the ability to query a task\u0027s stack trace. It is more\nuseful than /proc/*/wchan as it provides full stack trace instead of single\ndepth. Example output:\n\n\t$ cat /proc/self/stack\n\t[\u003cc010a271\u003e] save_stack_trace_tsk+0x17/0x35\n\t[\u003cc01827b4\u003e] proc_pid_stack+0x4a/0x76\n\t[\u003cc018312d\u003e] proc_single_show+0x4a/0x5e\n\t[\u003cc016bdec\u003e] seq_read+0xf3/0x29f\n\t[\u003cc015a004\u003e] vfs_read+0x6d/0x91\n\t[\u003cc015a0c1\u003e] sys_read+0x3b/0x60\n\t[\u003cc0102eda\u003e] syscall_call+0x7/0xb\n\t[\u003cffffffff\u003e] 0xffffffff\n\n[add save_stack_trace_tsk() on mips, ACK Ralf --adobriyan]\nSigned-off-by: Ken Chen \u003ckenchen@google.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Alexey Dobriyan \u003cadobriyan@gmail.com\u003e\n" }, { "commit": "fa623d1b0222adbe8f822e53c08003b9679a410c", "tree": "261a320f3fbf88fab8a3203419ca4d71bdf49152", "parents": [ "3d44cc3e01ee1b40317f79ed54324e25c4f848df", "1ccedb7cdba6886939dd8b4c8f965a826f696e56", "34945ede31071ac7d72270cc6c1893323f392b3f", "d4377974062122d6d9be0bbd8a910a0954714194", "c415b3dce30dfb41234e118662e8720f47343a4f", "beeb4195cbc80b7489631361b7ed38b7518af433", "f269b07e862c395d6981ab2c05d6bc34b0249e90", "4e42ebd57b2e727b28bf5f6068e95cd19b0e807b", "e1286f2c686f5976e0424bb6195ece25e7a17607", "878719e831d9e076961aa15d4049a57a6668c67a", "fd28a5b58dddf5cb5df162ae5c8797a63171c31d", "adf77bac052bb5bf0722b2ce2af9fefc5b2d2a71", "8f2466f45f75e3cbe3aa2b69d33fd9d6e343b9cc", "93093d099e5dd0c258fd530c12668e828c20df41", "bb5574608a8375026510b4f983ffbb06ece33fe2", "f34a10bd9f8cc95ebdc69a079db195636b2e22e0", "b6fd6f26733e864fba2ea3eb1d716e23d2e66f3a", "30604bb410b53efa9c93ee8f03d7aa7494094faa", "5b9a0e14eb4bf40a7cb780af4723560e06753f2d", "67bac792cd0c05b4b6e0393c32605b028b8dd533", "7a9787e1eba95a166265e6a260cf30af04ef0a99", "f4166c54bfe04f64603974058e44fbd7cfef0ccc", "69b88afa8d114a43a3c0431722b79e31d9920692", "8daa19051e1c7369c89ace7b18e74fe1f55dfa29", "3e1e9002aa8b32bd4c95ac6c8fad376b7a8127fb", "8403295e0fa460f6240e2d781e25dc29189f33c7", "4db646b1af8fdcf01d690d29eeae44cd937edb0d", "205516c12dbba003c26b42cfb41e598631300106", "c8182f0016fb65a721c4fbe487909a2d56178135", "ecbf29cdb3990c83d90d0c4187c89fb2ce423367" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Tue Dec 23 16:27:23 2008 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Tue Dec 23 16:27:23 2008 +0100" }, "message": "Merge branches \u0027x86/apic\u0027, \u0027x86/cleanups\u0027, \u0027x86/cpufeature\u0027, \u0027x86/crashdump\u0027, \u0027x86/debug\u0027, \u0027x86/defconfig\u0027, \u0027x86/detect-hyper\u0027, \u0027x86/doc\u0027, \u0027x86/dumpstack\u0027, \u0027x86/early-printk\u0027, \u0027x86/fpu\u0027, \u0027x86/idle\u0027, \u0027x86/io\u0027, \u0027x86/memory-corruption-check\u0027, \u0027x86/microcode\u0027, \u0027x86/mm\u0027, \u0027x86/mtrr\u0027, \u0027x86/nmi-watchdog\u0027, \u0027x86/pat2\u0027, \u0027x86/pci-ioapic-boot-irq-quirks\u0027, \u0027x86/ptrace\u0027, \u0027x86/quirks\u0027, \u0027x86/reboot\u0027, \u0027x86/setup-memory\u0027, \u0027x86/signal\u0027, \u0027x86/sparse-fixes\u0027, \u0027x86/time\u0027, \u0027x86/uv\u0027 and \u0027x86/xen\u0027 into x86/core\n" }, { "commit": "7ef9964e6d1b911b78709f144000aacadd0ebc21", "tree": "30667d0a2f8e53973ff48d2c02df48bbc6fe74aa", "parents": [ "b7d271df873c5121a4ca1c70dea126b5920ec2f1" ], "author": { "name": "Davide Libenzi", "email": "davidel@xmailserver.org", "time": "Mon Dec 01 13:13:55 2008 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Mon Dec 01 19:55:24 2008 -0800" }, "message": "epoll: introduce resource usage limits\n\nIt has been thought that the per-user file descriptors limit would also\nlimit the resources that a normal user can request via the epoll\ninterface. Vegard Nossum reported a very simple program (a modified\nversion attached) that can make a normal user to request a pretty large\namount of kernel memory, well within the its maximum number of fds. To\nsolve such problem, default limits are now imposed, and /proc based\nconfiguration has been introduced. A new directory has been created,\nnamed /proc/sys/fs/epoll/ and inside there, there are two configuration\npoints:\n\n max_user_instances \u003d Maximum number of devices - per user\n\n max_user_watches \u003d Maximum number of \"watched\" fds - per user\n\nThe current default for \"max_user_watches\" limits the memory used by epoll\nto store \"watches\", to 1/32 of the amount of the low RAM. As example, a\n256MB 32bit machine, will have \"max_user_watches\" set to roughly 90000.\nThat should be enough to not break existing heavy epoll users. The\ndefault value for \"max_user_instances\" is set to 128, that should be\nenough too.\n\nThis also changes the userspace, because a new error code can now come out\nfrom EPOLL_CTL_ADD (-ENOSPC). The EMFILE from epoll_create() was already\nlisted, so that should be ok.\n\n[akpm@linux-foundation.org: use get_current_user()]\nSigned-off-by: Davide Libenzi \u003cdavidel@xmailserver.org\u003e\nCc: Michael Kerrisk \u003cmtk.manpages@gmail.com\u003e\nCc: \u003cstable@kernel.org\u003e\nCc: Cyrill Gorcunov \u003cgorcunov@gmail.com\u003e\nReported-by: Vegard Nossum \u003cvegardno@ifi.uio.no\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "8a1c8eb75be492e20003966652c9cd5ff57a559d", "tree": "9cd97cc9f80fa538017a2ed741de7393876aba08", "parents": [ "b062f841b569791d3054e975cd85f48562161565" ], "author": { "name": "Aristeu Rozanski", "email": "aris@redhat.com", "time": "Thu Oct 30 13:08:50 2008 -0400" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Thu Oct 30 19:07:04 2008 +0100" }, "message": "x86, nmi-watchdog: update procfs nmi_watchdog file documentation v2\n\nImpact: improve documentation\n\nThis patch updates the /proc/sys/kernel/nmi_watchdog documentation.\nUpdated: included Randy Dunlap\u0027s corrections.\n\nSigned-off-by: Aristeu Rozanski \u003caris@redhat.com\u003e\nAcked-by: Randy Dunlap \u003crandy.dunlap@oracle.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "7a6560e02556b6f0a798c247f3a557c523d9701b", "tree": "7c1ded3e016e8604deb0cfb3b2d85389a8ae106e", "parents": [ "9f1b16a51ea7180eca8a0d76a6bd587385a30757" ], "author": { "name": "Andrea Righi", "email": "righi.andrea@gmail.com", "time": "Sat Oct 18 20:27:13 2008 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Mon Oct 20 08:52:32 2008 -0700" }, "message": "documentation: clarify dirty_ratio and dirty_background_ratio description\n\nThe current documentation of dirty_ratio and dirty_background_ratio is a\nbit misleading.\n\nIn the documentation we say that they are \"a percentage of total system\nmemory\", but the current page writeback policy, intead, is to apply the\npercentages to the dirtyable memory, that means free pages + reclaimable\npages.\n\nBetter to be more explicit to clarify this concept.\n\nSigned-off-by: Andrea Righi \u003crighi.andrea@gmail.com\u003e\nSigned-off-by: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nCc: KOSAKI Motohiro \u003ckosaki.motohiro@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": "e575f111dc0f27044e170580e7de50985ab3e011", "tree": "96021950c36cd6c537a8fc00811f4846767813b8", "parents": [ "d903ef9f38813e7eb268744a7e579e92f411c83a" ], "author": { "name": "KOSAKI Motohiro", "email": "kosaki.motohiro@jp.fujitsu.com", "time": "Sat Oct 18 20:27:08 2008 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Mon Oct 20 08:52:32 2008 -0700" }, "message": "coredump_filter: add hugepage dumping\n\nPresently hugepage\u0027s vma has a VM_RESERVED flag in order not to be\nswapped. But a VM_RESERVED vma isn\u0027t core dumped because this flag is\noften used for some kernel vmas (e.g. vmalloc, sound related).\n\nThus hugepages are never dumped and it can\u0027t be debugged easily. Many\ndevelopers want hugepages to be included into core-dump.\n\nHowever, We can\u0027t read generic VM_RESERVED area because this area is often\nIO mapping area. then these area reading may change device state. it is\ndefinitly undesiable side-effect.\n\nSo adding a hugepage specific bit to the coredump filter is better. It\nwill be able to hugepage core dumping and doesn\u0027t cause any side-effect to\nany i/o devices.\n\nIn additional, libhugetlb use hugetlb private mapping pages as anonymous\npage. Then, hugepage private mapping pages should be core dumped by\ndefault.\n\nThen, /proc/[pid]/core_dump_filter has two new bits.\n\n - bit 5 mean hugetlb private mapping pages are dumped or not. (default: yes)\n - bit 6 mean hugetlb shared mapping pages are dumped or not. (default: no)\n\nI tested by following method.\n\n% ulimit -c unlimited\n% ./crash_hugepage 50\n% ./crash_hugepage 50 -p\n% ls -lh\n% gdb ./crash_hugepage core\n%\n% echo 0x43 \u003e /proc/self/coredump_filter\n% ./crash_hugepage 50\n% ./crash_hugepage 50 -p\n% ls -lh\n% gdb ./crash_hugepage core\n\n#include \u003cstdlib.h\u003e\n#include \u003cstdio.h\u003e\n#include \u003cunistd.h\u003e\n#include \u003csys/mman.h\u003e\n#include \u003cstring.h\u003e\n\n#include \"hugetlbfs.h\"\n\nint main(int argc, char** argv){\n\tchar* p;\n\tint ch;\n\tint mmap_flags \u003d MAP_SHARED;\n\tint fd;\n\tint nr_pages;\n\n\twhile((ch \u003d getopt(argc, argv, \"p\")) !\u003d -1) {\n\t\tswitch (ch) {\n\t\tcase \u0027p\u0027:\n\t\t\tmmap_flags \u0026\u003d ~MAP_SHARED;\n\t\t\tmmap_flags |\u003d MAP_PRIVATE;\n\t\t\tbreak;\n\t\tdefault:\n\t\t\t/* nothing*/\n\t\t\tbreak;\n\t\t}\n\t}\n\targc -\u003d optind;\n\targv +\u003d optind;\n\n\tif (argc \u003d\u003d 0){\n\t\tprintf(\"need # of pages\\n\");\n\t\texit(1);\n\t}\n\n\tnr_pages \u003d atoi(argv[0]);\n\tif (nr_pages \u003c 2) {\n\t\tprintf(\"nr_pages must \u003e2\\n\");\n\t\texit(1);\n\t}\n\n\tfd \u003d hugetlbfs_unlinked_fd();\n\tp \u003d mmap(NULL, nr_pages * gethugepagesize(),\n\t\t PROT_READ|PROT_WRITE, mmap_flags, fd, 0);\n\n\tsleep(2);\n\n\t*(p + gethugepagesize()) \u003d 1; /* COW */\n\tsleep(2);\n\n\t/* crash! */\n\t*(int*)0 \u003d 1;\n\n\treturn 0;\n}\n\nSigned-off-by: KOSAKI Motohiro \u003ckosaki.motohiro@jp.fujitsu.com\u003e\nReviewed-by: Kawai Hidehiro \u003chidehiro.kawai.ez@hitachi.com\u003e\nCc: Hugh Dickins \u003chugh@veritas.com\u003e\nCc: William Irwin \u003cwli@holomorphy.com\u003e\nCc: Adam Litke \u003cagl@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": "22b8ab66deb2600f93d24d30df17b9d9e5273d05", "tree": "3b0202b79549e6dff0369b295af22b577b2d6a9c", "parents": [ "6d5cd6effed5f8c958a6c0df56da336f5a4fdb8a" ], "author": { "name": "Bernhard Walle", "email": "bwalle@suse.de", "time": "Wed Oct 15 22:02:01 2008 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Oct 16 11:21:32 2008 -0700" }, "message": "Document panic_on_unrecovered_nmi sysctl\n\nThis adds \"panic_on_unrecovered_nmi\" sysctl to\nDocumentation/filesystems/proc.txt. The text is mainly taken from\nhttp://readlist.com/lists/vger.kernel.org/linux-kernel/43/217998.html.\n\nSigned-off-by: Bernhard Walle \u003cbwalle@suse.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "20272c8994cf1e1f8ed745a2ea161dd9ad3889f2", "tree": "96b1bf44be94e7e85bb2bf5b2b87a4dbd452ecde", "parents": [ "8d71ff0bef9cf4e70108a9a2762f2361e607abde", "3bbfe0596746e1590888a6e1e6a07583265238b7" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Mon Oct 13 10:04:04 2008 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Mon Oct 13 10:04:04 2008 -0700" }, "message": "Merge branch \u0027proc\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/adobriyan/proc\n\n* \u0027proc\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/adobriyan/proc:\n proc: remove kernel.maps_protect\n proc: remove now unneeded ADDBUF macro\n [PATCH] proc: show personality via /proc/pid/personality\n [PATCH] signal, procfs: some lock_task_sighand() users do not need rcu_read_lock()\n proc: move PROC_PAGE_MONITOR to fs/proc/Kconfig\n proc: make grab_header() static\n proc: remove unused get_dma_list()\n proc: remove dummy vmcore_open()\n proc: proc_sys_root tweak\n proc: fix return value of proc_reg_open() in \"too late\" case\n\nFixed up trivial conflict in removed file arch/sparc/include/asm/dma_32.h\n" }, { "commit": "3bbfe0596746e1590888a6e1e6a07583265238b7", "tree": "057d3d2aa8cb68eff8c944378e86ba120eff9cf4", "parents": [ "45acb8db06bad529f0feaf89465ce33152640089" ], "author": { "name": "Alexey Dobriyan", "email": "adobriyan@gmail.com", "time": "Fri Oct 10 03:27:16 2008 +0400" }, "committer": { "name": "Alexey Dobriyan", "email": "adobriyan@gmail.com", "time": "Fri Oct 10 04:24:51 2008 +0400" }, "message": "proc: remove kernel.maps_protect\n\nAfter commit 831830b5a2b5d413407adf380ef62fe17d6fcbf2 aka\n\"restrict reading from /proc/\u003cpid\u003e/maps to those who share -\u003emm or can ptrace\"\nsysctl stopped being relevant because commit moved security checks from -\u003eshow\ntime to -\u003estart time (mm_for_maps()).\n\nSigned-off-by: Alexey Dobriyan \u003cadobriyan@gmail.com\u003e\nAcked-by: Kees Cook \u003ckees.cook@canonical.com\u003e\n" }, { "commit": "240799cdf22bd789ea6852653c3b879d35ad0a6c", "tree": "e696b60cc103f23838b5c14d8d397f692abffbc3", "parents": [ "37515facd001942221d68171c81c1f46d54ffdd0" ], "author": { "name": "Theodore Ts\u0027o", "email": "tytso@mit.edu", "time": "Thu Oct 09 23:53:47 2008 -0400" }, "committer": { "name": "Theodore Ts\u0027o", "email": "tytso@mit.edu", "time": "Thu Oct 09 23:53:47 2008 -0400" }, "message": "ext4: Use readahead when reading an inode from the inode table\n\nWith modern hard drives, reading 64k takes roughly the same time as\nreading a 4k block. So request readahead for adjacent inode table\nblocks to reduce the time it takes when iterating over directories\n(especially when doing this in htree sort order) in a cold cache case.\nWith this patch, the time it takes to run \"git status\" on a kernel\ntree after flushing the caches via \"echo 3 \u003e /proc/sys/vm/drop_caches\"\nis reduced by 21%.\n\nSigned-off-by: \"Theodore Ts\u0027o\" \u003ctytso@mit.edu\u003e\n" }, { "commit": "37515facd001942221d68171c81c1f46d54ffdd0", "tree": "bd06bcb139a81167ddd3e0d28843dea3441c264e", "parents": [ "5e8814f2f74f53d58aa5679bf32b38a7940033fe" ], "author": { "name": "Theodore Ts\u0027o", "email": "tytso@mit.edu", "time": "Thu Oct 09 23:21:54 2008 -0400" }, "committer": { "name": "Theodore Ts\u0027o", "email": "tytso@mit.edu", "time": "Thu Oct 09 23:21:54 2008 -0400" }, "message": "ext4: Improve the documentation for ext4\u0027s /proc tunables\n\nSigned-off-by: \"Theodore Ts\u0027o\" \u003ctytso@mit.edu\u003e\nCc: Alex Tomas \u003cbzzz@sun.com\u003e\nCc: Andreas Dilger \u003cadilger@sun.com\u003e\n" }, { "commit": "b261dfea48e81636516f4fa653667097638a8a62", "tree": "d689401cf840df7e2e48aa9597a3226e0609c500", "parents": [ "024994310e10cd7632f43b6873558820308c1af1" ], "author": { "name": "Hidehiro Kawai", "email": "hidehiro.kawai.ez@hitachi.com", "time": "Sat Sep 13 02:33:10 2008 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Sat Sep 13 14:41:51 2008 -0700" }, "message": "coredump_filter: add description of bit 4\n\nThere is no description of bit 4 of coredump_filter in the\ndocumentation. This patch adds it.\n\nSigned-off-by: Hidehiro Kawai \u003chidehiro.kawai.ez@hitachi.com\u003e\nCc: Roland McGrath \u003croland@redhat.com\u003e\nCc: Mel Gorman \u003cmel@csn.ul.ie\u003e\nAcked-by: KOSAKI Motohiro \u003ckosaki.motohiro@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": "61e55d0576d0e7eb4fecaeb25b3618e035de5be1", "tree": "67e5d5b779e9c229d4a3af919e821b619ee314b1", "parents": [ "b954185214c3b562c3fcc651e9ec69d421d76bfa" ], "author": { "name": "Nadia Derbey", "email": "Nadia.Derbey@bull.net", "time": "Tue Sep 02 14:35:59 2008 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Sep 02 19:21:39 2008 -0700" }, "message": "ipc: document the new auto_msgmni proc file\n\nUpdate Documentation/filesystems/proc.txt: it describes the file\nauto_msgmni intoduced to enable/disable msgmni automatic recomputing upon\nmemory add/remove (see thread http://lkml.org/lkml/2008/7/4/27). Also\nadded a description for msgmni (this filex is only listed in\nDocumentation/sysctl/kernel.txt).\n\nSigned-off-by: Nadia Derbey \u003cNadia.Derbey@bull.net\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "d91958815d214ea365b98cbff6215383897edcb6", "tree": "a50416a04c9ae84c4242dbec62d8f211d97ea4d2", "parents": [ "19fd6231279be3c3bdd02ed99f9b0eb195978064" ], "author": { "name": "Matt LaPlante", "email": "kernel1@cyberdogtech.com", "time": "Fri Jul 25 19:45:33 2008 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Sat Jul 26 12:00:06 2008 -0700" }, "message": "Documentation cleanup: trivial misspelling, punctuation, and grammar corrections.\n\nCc: Randy Dunlap \u003crandy.dunlap@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": "a47a126ad5ea072aca3e611ed8f8dc6adad24bab", "tree": "be47608111f762eba4fc6e80c7c2fcd82ffd6fd6", "parents": [ "cce770815869e9209171d819dfde89bcc738ab62" ], "author": { "name": "Eric Dumazet", "email": "dada1@cosmosbay.com", "time": "Wed Jul 23 21:27:38 2008 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Jul 24 10:47:17 2008 -0700" }, "message": "vmallocinfo: add NUMA information\n\nChristoph recently added /proc/vmallocinfo file to get information about\nvmalloc allocations.\n\nThis patch adds NUMA specific information, giving number of pages\nallocated on each memory node.\n\nThis should help to check that vmalloc() is able to respect NUMA policies.\n\nExample of output on a four nodes machine (one cpu per node)\n\n1) network hash tables are evenly spreaded on four nodes (OK) (Same\n point for inodes and dentries hash tables)\n\n2) iptables tables (x_tables) are correctly allocated on each cpu node\n (OK).\n\n3) sys_swapon() allocates its memory from one node only.\n\n4) each loaded module is using memory on one node.\n\nSysadmins could tune their setup to change points 3) and 4) if necessary.\n\ngrep \"pages\u003d\" /proc/vmallocinfo\n0xffffc20000000000-0xffffc20000201000 2101248 alloc_large_system_hash+0x204/0x2c0 pages\u003d512 vmalloc N0\u003d128 N1\u003d128 N2\u003d128 N3\u003d128\n0xffffc20000201000-0xffffc20000302000 1052672 alloc_large_system_hash+0x204/0x2c0 pages\u003d256 vmalloc N0\u003d64 N1\u003d64 N2\u003d64 N3\u003d64\n0xffffc2000031a000-0xffffc2000031d000 12288 alloc_large_system_hash+0x204/0x2c0 pages\u003d2 vmalloc N1\u003d1 N2\u003d1\n0xffffc2000031f000-0xffffc2000032b000 49152 cramfs_uncompress_init+0x2e/0x80 pages\u003d11 vmalloc N0\u003d3 N1\u003d3 N2\u003d2 N3\u003d3\n0xffffc2000033e000-0xffffc20000341000 12288 sys_swapon+0x640/0xac0 pages\u003d2 vmalloc N0\u003d2\n0xffffc20000341000-0xffffc20000344000 12288 xt_alloc_table_info+0xfe/0x130 [x_tables] pages\u003d2 vmalloc N0\u003d2\n0xffffc20000344000-0xffffc20000347000 12288 xt_alloc_table_info+0xfe/0x130 [x_tables] pages\u003d2 vmalloc N1\u003d2\n0xffffc20000347000-0xffffc2000034a000 12288 xt_alloc_table_info+0xfe/0x130 [x_tables] pages\u003d2 vmalloc N2\u003d2\n0xffffc2000034a000-0xffffc2000034d000 12288 xt_alloc_table_info+0xfe/0x130 [x_tables] pages\u003d2 vmalloc N3\u003d2\n0xffffc20004381000-0xffffc20004402000 528384 alloc_large_system_hash+0x204/0x2c0 pages\u003d128 vmalloc N0\u003d32 N1\u003d32 N2\u003d32 N3\u003d32\n0xffffc20004402000-0xffffc20004803000 4198400 alloc_large_system_hash+0x204/0x2c0 pages\u003d1024 vmalloc vpages N0\u003d256 N1\u003d256 N2\u003d256 N3\u003d256\n0xffffc20004803000-0xffffc20004904000 1052672 alloc_large_system_hash+0x204/0x2c0 pages\u003d256 vmalloc N0\u003d64 N1\u003d64 N2\u003d64 N3\u003d64\n0xffffc20004904000-0xffffc20004bec000 3047424 sys_swapon+0x640/0xac0 pages\u003d743 vmalloc vpages N0\u003d743\n0xffffffffa0000000-0xffffffffa000f000 61440 sys_init_module+0xc27/0x1d00 pages\u003d14 vmalloc N1\u003d14\n0xffffffffa000f000-0xffffffffa0014000 20480 sys_init_module+0xc27/0x1d00 pages\u003d4 vmalloc N0\u003d4\n0xffffffffa0014000-0xffffffffa0017000 12288 sys_init_module+0xc27/0x1d00 pages\u003d2 vmalloc N0\u003d2\n0xffffffffa0017000-0xffffffffa0022000 45056 sys_init_module+0xc27/0x1d00 pages\u003d10 vmalloc N1\u003d10\n0xffffffffa0022000-0xffffffffa0028000 24576 sys_init_module+0xc27/0x1d00 pages\u003d5 vmalloc N3\u003d5\n0xffffffffa0028000-0xffffffffa0050000 163840 sys_init_module+0xc27/0x1d00 pages\u003d39 vmalloc N1\u003d39\n0xffffffffa0050000-0xffffffffa0052000 8192 sys_init_module+0xc27/0x1d00 pages\u003d1 vmalloc N1\u003d1\n0xffffffffa0052000-0xffffffffa0056000 16384 sys_init_module+0xc27/0x1d00 pages\u003d3 vmalloc N1\u003d3\n0xffffffffa0056000-0xffffffffa0081000 176128 sys_init_module+0xc27/0x1d00 pages\u003d42 vmalloc N3\u003d42\n0xffffffffa0081000-0xffffffffa00ae000 184320 sys_init_module+0xc27/0x1d00 pages\u003d44 vmalloc N3\u003d44\n0xffffffffa00ae000-0xffffffffa00b1000 12288 sys_init_module+0xc27/0x1d00 pages\u003d2 vmalloc N3\u003d2\n0xffffffffa00b1000-0xffffffffa00b9000 32768 sys_init_module+0xc27/0x1d00 pages\u003d7 vmalloc N0\u003d7\n0xffffffffa00b9000-0xffffffffa00c4000 45056 sys_init_module+0xc27/0x1d00 pages\u003d10 vmalloc N3\u003d10\n0xffffffffa00c6000-0xffffffffa00e0000 106496 sys_init_module+0xc27/0x1d00 pages\u003d25 vmalloc N2\u003d25\n0xffffffffa00e0000-0xffffffffa00f1000 69632 sys_init_module+0xc27/0x1d00 pages\u003d16 vmalloc N2\u003d16\n0xffffffffa00f1000-0xffffffffa00f4000 12288 sys_init_module+0xc27/0x1d00 pages\u003d2 vmalloc N3\u003d2\n0xffffffffa00f4000-0xffffffffa00f7000 12288 sys_init_module+0xc27/0x1d00 pages\u003d2 vmalloc N3\u003d2\n\n[akpm@linux-foundation.org: fix comment]\nSigned-off-by: Eric Dumazet \u003cdada1@cosmosbay.com\u003e\nCc: Christoph Lameter \u003ccl@linux-foundation.org\u003e\nCc: Randy Dunlap \u003crandy.dunlap@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": "18404756765c713a0be4eb1082920c04822ce588", "tree": "ed426f8fe90bff1ffd854074a2e4b370dd6821f8", "parents": [ "c3b25b32e8bef526cca748e1ba023c6bdd705a99" ], "author": { "name": "Max Krasnyansky", "email": "maxk@qualcomm.com", "time": "Thu May 29 11:02:52 2008 -0700" }, "committer": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Thu Jun 05 15:18:30 2008 +0200" }, "message": "genirq: Expose default irq affinity mask (take 3)\n\nCurrent IRQ affinity interface does not provide a way to set affinity\nfor the IRQs that will be allocated/activated in the future.\nThis patch creates /proc/irq/default_smp_affinity that lets users set\ndefault affinity mask for the newly allocated IRQs. Changing the default\ndoes not affect affinity masks for the currently active IRQs, they\nhave to be changed explicitly.\n\nUpdated based on Paul J\u0027s comments and added some more documentation.\n\nSigned-off-by: Max Krasnyansky \u003cmaxk@qualcomm.com\u003e\nCc: pj@sgi.com\nCc: a.p.zijlstra@chello.nl\nCc: tglx@linutronix.de\nCc: rdunlap@xenotime.net\nCc: mingo@elte.hu\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\n" }, { "commit": "b88473f73e6d7b6af9cfc4ecc349d82c75d9a6af", "tree": "82c6e9b13ad03ee85184fa20c40d8cb33efde4e3", "parents": [ "fc3ba692a4d19019387c5acaea63131f9eab05dd" ], "author": { "name": "Miklos Szeredi", "email": "mszeredi@suse.cz", "time": "Wed Apr 30 00:54:39 2008 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Wed Apr 30 08:29:50 2008 -0700" }, "message": "mm: document missing fields for /proc/meminfo\n\nA few fields in /proc/meminfo were not documented. Fix.\n\nSigned-off-by: Miklos Szeredi \u003cmszeredi@suse.cz\u003e\nCc: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "97e7e0f71d6d948c25f11f0a33878d9356d9579e", "tree": "2db3bcf3b4f47995308187eec7f3a61d67446dfa", "parents": [ "2d4d4864ac08caff5c204a752bd004eed4f08760" ], "author": { "name": "Miklos Szeredi", "email": "mszeredi@suse.cz", "time": "Thu Mar 27 13:06:26 2008 +0100" }, "committer": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Wed Apr 23 00:05:09 2008 -0400" }, "message": "[patch 7/7] vfs: mountinfo: show dominating group id\n\nShow peer group ID of nearest dominating group that has intersection\nwith the mount\u0027s namespace.\n\nSigned-off-by: Miklos Szeredi \u003cmszeredi@suse.cz\u003e\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n" }, { "commit": "2d4d4864ac08caff5c204a752bd004eed4f08760", "tree": "a8907c33afae589146fdcd06eacd740aff48c6a1", "parents": [ "a1a2c409b666befc58c2db9c7fbddf200f153470" ], "author": { "name": "Ram Pai", "email": "linuxram@us.ibm.com", "time": "Thu Mar 27 13:06:25 2008 +0100" }, "committer": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Wed Apr 23 00:05:03 2008 -0400" }, "message": "[patch 6/7] vfs: mountinfo: add /proc/\u003cpid\u003e/mountinfo\n\n[mszeredi@suse.cz] rewrite and split big patch into managable chunks\n\n/proc/mounts in its current form lacks important information:\n\n - propagation state\n - root of mount for bind mounts\n - the st_dev value used within the filesystem\n - identifier for each mount and it\u0027s parent\n\nIt also suffers from the following problems:\n\n - not easily extendable\n - ambiguity of mountpoints within a chrooted environment\n - doesn\u0027t distinguish between filesystem dependent and independent options\n - doesn\u0027t distinguish between per mount and per super block options\n\nThis patch introduces /proc/\u003cpid\u003e/mountinfo which attempts to address\nall these deficiencies.\n\nCode shared between /proc/\u003cpid\u003e/mounts and /proc/\u003cpid\u003e/mountinfo is\nextracted into separate functions.\n\nThanks to Al Viro for the help in getting the design right.\n\nSigned-off-by: Ram Pai \u003clinuxram@us.ibm.com\u003e\nSigned-off-by: Miklos Szeredi \u003cmszeredi@suse.cz\u003e\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n" }, { "commit": "a09a20b526fde0611b49b76521e3c546a47216a5", "tree": "44bcdd0474af14d84a081c571f7c7e624dbc211b", "parents": [ "baadac8b10c5ac15ce3d26b68fa266c8889b163f" ], "author": { "name": "Randy Dunlap", "email": "randy.dunlap@oracle.com", "time": "Tue Mar 04 13:41:26 2008 -0800" }, "committer": { "name": "Len Brown", "email": "len.brown@intel.com", "time": "Wed Mar 12 02:37:21 2008 -0400" }, "message": "laptops: move laptop-mode.txt to Documentation/laptops/\n\nMove laptop-mode.txt into the laptops/ sub-directory to consolidate\nlaptop doc files there.\n\nUpdate references to the file\u0027s location.\n\nSigned-off-by: Randy Dunlap \u003crandy.dunlap@oracle.com\u003e\nSigned-off-by: Len Brown \u003clen.brown@intel.com\u003e\n" }, { "commit": "9cfe015aa424b3c003baba3841a60dd9b5ad319b", "tree": "5575e06efcf91018f860f2db43979e8e91aba1c3", "parents": [ "774ed22c21ab95d582dfff38560f11cf290baeb4" ], "author": { "name": "Eric Dumazet", "email": "dada1@cosmosbay.com", "time": "Wed Feb 06 01:37:16 2008 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Wed Feb 06 10:41:06 2008 -0800" }, "message": "get rid of NR_OPEN and introduce a sysctl_nr_open\n\nNR_OPEN (historically set to 1024*1024) actually forbids processes to open\nmore than 1024*1024 handles.\n\nUnfortunatly some production servers hit the not so \u0027ridiculously high\nvalue\u0027 of 1024*1024 file descriptors per process.\n\nChanging NR_OPEN is not considered safe because of vmalloc space potential\nexhaust.\n\nThis patch introduces a new sysctl (/proc/sys/fs/nr_open) wich defaults to\n1024*1024, so that admins can decide to change this limit if their workload\nneeds it.\n\n[akpm@linux-foundation.org: export it for sparc64]\nSigned-off-by: Eric Dumazet \u003cdada1@cosmosbay.com\u003e\nCc: Alan Cox \u003calan@lxorguk.ukuu.org.uk\u003e\nCc: Richard Henderson \u003crth@twiddle.net\u003e\nCc: Ivan Kokshaysky \u003cink@jurassic.park.msu.ru\u003e\nCc: \"David S. Miller\" \u003cdavem@davemloft.net\u003e\nCc: Ralf Baechle \u003cralf@linux-mips.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "7786fa9ac5366214fb942a9e62c6e46b4272c22c", "tree": "dafa4440d5607d3481d512b17f2b764a4fefa29d", "parents": [ "b5beb1caff4ce063e6e2dc13f23b80eeef4e9782" ], "author": { "name": "Yasunori Goto", "email": "y-goto@jp.fujitsu.com", "time": "Mon Feb 04 22:29:32 2008 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Feb 05 09:44:19 2008 -0800" }, "message": "Document lowmem_reserve_ratio\n\nThough the lower_zone_protection was changed to lowmem_reserve_ratio, the\ndocument has been not changed. The lowmem_reserve_ratio seems quite hard\nto estimate, but there is no guidance. This patch is to change document\nfor it.\n\nSigned-off-by: Yasunori Goto \u003cy-goto@jp.fujitsu.com\u003e\nCc: Andrea Arcangeli \u003candrea@cpushare.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "195cf453d2c3d789cbe80e3735755f860c2fb222", "tree": "fad48a8167744b6c091c8ca499bc78b859af8957", "parents": [ "3dfa5721f12c3d5a441448086bee156887daa961" ], "author": { "name": "Bron Gondwana", "email": "brong@fastmail.fm", "time": "Mon Feb 04 22:29:20 2008 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Feb 05 09:44:18 2008 -0800" }, "message": "mm/page-writeback: highmem_is_dirtyable option\n\nAdd vm.highmem_is_dirtyable toggle\n\nA 32 bit machine with HIGHMEM64 enabled running DCC has an MMAPed file of\napproximately 2Gb size which contains a hash format that is written\nrandomly by the dbclean process. On 2.6.16 this process took a few\nminutes. With lowmem only accounting of dirty ratios, this takes about 12\nhours of 100% disk IO, all random writes.\n\nInclude a toggle in /proc/sys/vm/highmem_is_dirtyable which can be set to 1 to\nadd the highmem back to the total available memory count.\n\n[akpm@linux-foundation.org: Fix the CONFIG_DETECT_SOFTLOCKUP\u003dy build]\nSigned-off-by: Bron Gondwana \u003cbrong@fastmail.fm\u003e\nCc: Ethan Solomita \u003csolo@google.com\u003e\nCc: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nCc: WU Fengguang \u003cwfg@mail.ustc.edu.cn\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "2e01e00e768ef42fb5b8804cd1b9b47b26d59ec5", "tree": "25e451ce3fc6d2742d5f7d4a1d5651c8c9e812e9", "parents": [ "eb8dc5e7b58bfe56aa91bcc501b62f214bb401e8" ], "author": { "name": "Leonardo Chiquitto", "email": "leonardo@iken.com.br", "time": "Sun Feb 03 16:17:16 2008 +0200" }, "committer": { "name": "Adrian Bunk", "email": "bunk@kernel.org", "time": "Sun Feb 03 16:17:16 2008 +0200" }, "message": "Documentation: missing proc/$PID/stat field\n\nThere\u0027s a missing field in the /proc/$PID/stat output documented in\nDocumentation/filesystems/proc.txt.\n\nSigned-off-by: Adrian Bunk \u003cbunk@kernel.org\u003e\n" }, { "commit": "de6bbd1d30e5912620d25dd15e3f180ac7f9fcef", "tree": "3807b13f8e2e490c258c5bb37915c95fc1bcfe20", "parents": [ "e445deb593d67c8ed13bd357c780a93d78bc84cf" ], "author": { "name": "Eric Paris", "email": "eparis@redhat.com", "time": "Mon Jan 07 14:31:58 2008 -0500" }, "committer": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Fri Feb 01 14:23:55 2008 -0500" }, "message": "[AUDIT] break large execve argument logging into smaller messages\n\nexecve arguments can be quite large. There is no limit on the number of\narguments and a 4G limit on the size of an argument.\n\nthis patch prints those aruguments in bite sized pieces. a userspace size\nlimitation of 8k was discovered so this keeps messages around 7.5k\n\nsingle arguments larger than 7.5k in length are split into multiple records\nand can be identified as aX[Y]\u003d\n\nSigned-off-by: Eric Paris \u003ceparis@redhat.com\u003e\n" }, { "commit": "29e75252da20f3ab9e132c68c9aed156b87beae6", "tree": "affd152c959eede937b50f6054a303a388a88545", "parents": [ "174ce0483198b9dffd712fdd7d53635954fddffe" ], "author": { "name": "Eric Dumazet", "email": "dada1@cosmosbay.com", "time": "Thu Jan 31 17:05:09 2008 -0800" }, "committer": { "name": "David S. Miller", "email": "davem@davemloft.net", "time": "Thu Jan 31 19:28:27 2008 -0800" }, "message": "[IPV4] route cache: Introduce rt_genid for smooth cache invalidation\n\nCurrent ip route cache implementation is not suited to large caches.\n\nWe can consume a lot of CPU when cache must be invalidated, since we\ncurrently need to evict all cache entries, and this eviction is\nsometimes asynchronous. min_delay \u0026 max_delay can somewhat control this\nasynchronism behavior, but whole thing is a kludge, regularly triggering\ninfamous soft lockup messages. When entries are still in use, this also\nconsumes a lot of ram, filling dst_garbage.list.\n\nA better scheme is to use a generation identifier on each entry,\nso that cache invalidation can be performed by changing the table\nidentifier, without having to scan all entries.\nNo more delayed flushing, no more stalling when secret_interval expires.\n\nInvalidated entries will then be freed at GC time (controled by\nip_rt_gc_timeout or stress), or when an invalidated entry is found\nin a chain when an insert is done.\nThus we keep a normal equilibrium.\n\nThis patch :\n- renames rt_hash_rnd to rt_genid (and makes it an atomic_t)\n- Adds a new rt_genid field to \u0027struct rtable\u0027 (filling a hole on 64bit)\n- Checks entry-\u003ert_genid at appropriate places :\n" }, { "commit": "c9de560ded61faa5b754137b7753da252391c55a", "tree": "2c4311377c4aa72450e27f531e198fe3e1c67db0", "parents": [ "1988b51e476bd097d910c9245b53f2e38aedaf0d" ], "author": { "name": "Alex Tomas", "email": "alex@clusterfs.com", "time": "Tue Jan 29 00:19:52 2008 -0500" }, "committer": { "name": "Theodore Ts\u0027o", "email": "tytso@mit.edu", "time": "Tue Jan 29 00:19:52 2008 -0500" }, "message": "ext4: Add multi block allocator for ext4\n\nSigned-off-by: Alex Tomas \u003calex@clusterfs.com\u003e\nSigned-off-by: Andreas Dilger \u003cadilger@clusterfs.com\u003e\nSigned-off-by: Aneesh Kumar K.V \u003caneesh.kumar@linux.vnet.ibm.com\u003e\nSigned-off-by: Eric Sandeen \u003csandeen@redhat.com\u003e\nSigned-off-by: \"Theodore Ts\u0027o\" \u003ctytso@mit.edu\u003e\n" }, { "commit": "b68f2c3a984edb2beb9013bc773d51ac5c56c407", "tree": "702de4045e1e7802f7e2c172831a348a782ee867", "parents": [ "ad3d0a3827a3ce45ee4141de81be7375157b42de" ], "author": { "name": "Leonardo Chiquitto", "email": "leonardo@iken.com.br", "time": "Sat Oct 20 03:03:38 2007 +0200" }, "committer": { "name": "Adrian Bunk", "email": "bunk@kernel.org", "time": "Sat Oct 20 03:03:38 2007 +0200" }, "message": "proc.txt: Add /proc/stat field\n\nThis patch updates the \"cat /proc/stat\" output found\nin Documentation/filesystems/proc.txt.\n\nSigned-off-by: Adrian Bunk \u003cbunk@kernel.org\u003e\n" }, { "commit": "38e760a1335ffaca5a08624a9aed6fe2055c2c98", "tree": "c313888b750a56db7c9c09c8af5be830bb75b81e", "parents": [ "9aa8d7195acb18fc436847f6c66a97f8359ad54d" ], "author": { "name": "Joe Korty", "email": "joe.korty@ccur.com", "time": "Wed Oct 17 18:04:40 2007 +0200" }, "committer": { "name": "Thomas Gleixner", "email": "tglx@inhelltoy.tec.linutronix.de", "time": "Wed Oct 17 20:16:53 2007 +0200" }, "message": "x86: expand /proc/interrupts to include missing vectors, v2\n\nAdd missing IRQs and IRQ descriptions to /proc/interrupts.\n\n/proc/interrupts is most useful when it displays every IRQ vector in use by\nthe system, not just those somebody thought would be interesting.\n\nThis patch inserts the following vector displays to the i386 and x86_64\nplatforms, as appropriate:\n\n\trescheduling interrupts\n\tTLB flush interrupts\n\tfunction call interrupts\n\tthermal event interrupts\n\tthreshold interrupts\n\tspurious interrupts\n\nA threshold interrupt occurs when ECC memory correction is occuring at too\nhigh a frequency. Thresholds are used by the ECC hardware as occasional\nECC failures are part of normal operation, but long sequences of ECC\nfailures usually indicate a memory chip that is about to fail.\n\nThermal event interrupts occur when a temperature threshold has been\nexceeded for some CPU chip. IIRC, a thermal interrupt is also generated\nwhen the temperature drops back to a normal level.\n\nA spurious interrupt is an interrupt that was raised then lowered by the\ndevice before it could be fully processed by the APIC. Hence the apic sees\nthe interrupt but does not know what device it came from. For this case\nthe APIC hardware will assume a vector of 0xff.\n\nRescheduling, call, and TLB flush interrupts are sent from one CPU to\nanother per the needs of the OS. Typically, their statistics would be used\nto discover if an interrupt flood of the given type has been occuring.\n\nAK: merged v2 and v4 which had some more tweaks\nAK: replace Local interrupts with Local timer interrupts\nAK: Fixed description of interrupt types.\n\n[ tglx: arch/x86 adaptation ]\n[ mingo: small cleanup ]\n\nSigned-off-by: Joe Korty \u003cjoe.korty@ccur.com\u003e\nSigned-off-by: Andi Kleen \u003cak@suse.de\u003e\nCc: Tim Hockin \u003cthockin@hockin.org\u003e\nCc: Andi Kleen \u003cak@suse.de\u003e\nCc: Ingo Molnar \u003cmingo@elte.hu\u003e\nCc: \"H. Peter Anvin\" \u003chpa@zytor.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\n" }, { "commit": "bb90110dcb9e93bf79e3c988abc6cbcabd46d57f", "tree": "0c082570bea12431636bd44fe470ebc0c9a6d8ab", "parents": [ "ee78b0a61f0514ffc3d59257fbe6863b43477829" ], "author": { "name": "Kawai, Hidehiro", "email": "hidehiro.kawai.ez@hitachi.com", "time": "Thu Jul 19 01:48:31 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Thu Jul 19 10:04:47 2007 -0700" }, "message": "coredump masking: documentation for /proc/pid/coredump_filter\n\nThis patch adds the documentation for /proc/\u003cpid\u003e/coredump_filter.\n\nSigned-off-by: Hidehiro Kawai \u003chidehiro.kawai.ez@hitachi.com\u003e\nCc: Alan Cox \u003calan@lxorguk.ukuu.org.uk\u003e\nCc: David Howells \u003cdhowells@redhat.com\u003e\nCc: Hugh Dickins \u003chugh@veritas.com\u003e\nCc: Nick Piggin \u003cnickpiggin@yahoo.com.au\u003e\nCc: \"Randy.Dunlap\" \u003crdunlap@xenotime.net\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "bdf4c48af20a3b0f01671799ace345e3d49576da", "tree": "7c3b903d2de1cba6e212ad6f347bc8742b08035a", "parents": [ "b111757c50ee30dad162192df6168e270a90c252" ], "author": { "name": "Peter Zijlstra", "email": "a.p.zijlstra@chello.nl", "time": "Thu Jul 19 01:48:15 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Thu Jul 19 10:04:45 2007 -0700" }, "message": "audit: rework execve audit\n\nThe purpose of audit_bprm() is to log the argv array to a userspace daemon at\nthe end of the execve system call. Since user-space hasn\u0027t had time to run,\nthis array is still in pristine state on the process\u0027 stack; so no need to\ncopy it, we can just grab it from there.\n\nIn order to minimize the damage to audit_log_*() copy each string into a\ntemporary kernel buffer first.\n\nCurrently the audit code requires that the full argument vector fits in a\nsingle packet. So currently it does clip the argv size to a (sysctl) limit,\nbut only when execve auditing is enabled.\n\nIf the audit protocol gets extended to allow for multiple packets this check\ncan be removed.\n\nSigned-off-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nSigned-off-by: Ollie Wild \u003caaw@google.com\u003e\nCc: \u003clinux-audit@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": "ed7ed365172e27b0efe9d43cc962723c7193e34e", "tree": "6c22daf6908f92c64aae2b425e6383fe0ed404ac", "parents": [ "396faf0303d273219db5d7eb4a2879ad977ed185" ], "author": { "name": "Mel Gorman", "email": "mel@csn.ul.ie", "time": "Tue Jul 17 04:03:14 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Jul 17 10:22:59 2007 -0700" }, "message": "handle kernelcore\u003d: generic\n\nThis patch adds the kernelcore\u003d parameter for x86.\n\nOnce all patches are applied, a new command-line parameter exist and a new\nsysctl. This patch adds the necessary documentation.\n\nFrom: Yasunori Goto \u003cy-goto@jp.fujitsu.com\u003e\n\n When \"kernelcore\" boot option is specified, kernel can\u0027t boot up on ia64\n because of an infinite loop. In addition, the parsing code can be handled\n in an architecture-independent manner.\n\n This patch uses common code to handle the kernelcore\u003d parameter. It is\n only available to architectures that support arch-independent zone-sizing\n (i.e. define CONFIG_ARCH_POPULATES_NODE_MAP). Other architectures will\n ignore the boot parameter.\n\n[bunk@stusta.de: make cmdline_parse_kernelcore() static]\nSigned-off-by: Mel Gorman \u003cmel@csn.ul.ie\u003e\nSigned-off-by: Yasunori Goto \u003cy-goto@jp.fujitsu.com\u003e\nAcked-by: Andy Whitcroft \u003capw@shadowen.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "18d96779d92902d2113b6f39bd2d42e805fa05e7", "tree": "83b7fafe628c4d793dbe682b1a2a91d0148e3f82", "parents": [ "9e6077bd84a7bffa73b59d9704682aeab5781fa0" ], "author": { "name": "Kees Cook", "email": "kees@outflux.net", "time": "Sun Jul 15 23:40:38 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Mon Jul 16 09:05:45 2007 -0700" }, "message": "Documentation: /proc/$pid/stat files\n\nDocumentation for the /proc/$pid/stat file.\n\nSigned-off-by: Kees Cook \u003ckees@outflux.net\u003e\nCc: Rob Landley \u003crob@landley.net\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "8b60756a628a73bc8bf8b59d8716cb3f09b7e7eb", "tree": "97ae34be8647f28bf12b0150fd94d90c2b35ad49", "parents": [ "1591275cb57bc5df7ff59774b85c8af84bc45e87" ], "author": { "name": "Randy Dunlap", "email": "randy.dunlap@oracle.com", "time": "Wed May 09 07:19:14 2007 +0200" }, "committer": { "name": "Adrian Bunk", "email": "bunk@stusta.de", "time": "Wed May 09 07:19:14 2007 +0200" }, "message": "Fix more \"deprecated\" spellos.\n\nSigned-off-by: Randy Dunlap \u003crandy.dunlap@oracle.com\u003e\nSigned-off-by: Adrian Bunk \u003cbunk@stusta.de\u003e\n" }, { "commit": "5096add84b9e96e2e0a9c72675c442fe5433388a", "tree": "f0444013cb7db32596d2b6febafc1ee4c2a4ea1f", "parents": [ "4a1ccb5b1eff949a90ab830869cb23d6609c3d5f" ], "author": { "name": "Kees Cook", "email": "kees@outflux.net", "time": "Tue May 08 00:26:04 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue May 08 11:15:02 2007 -0700" }, "message": "proc: maps protection\n\nThe /proc/pid/ \"maps\", \"smaps\", and \"numa_maps\" files contain sensitive\ninformation about the memory location and usage of processes. Issues:\n\n- maps should not be world-readable, especially if programs expect any\n kind of ASLR protection from local attackers.\n- maps cannot just be 0400 because \"-D_FORTIFY_SOURCE\u003d2 -O2\" makes glibc\n check the maps when %n is in a *printf call, and a setuid(getuid())\n process wouldn\u0027t be able to read its own maps file. (For reference\n see http://lkml.org/lkml/2006/1/22/150)\n- a system-wide toggle is needed to allow prior behavior in the case of\n non-root applications that depend on access to the maps contents.\n\nThis change implements a check using \"ptrace_may_attach\" before allowing\naccess to read the maps contents. To control this protection, the new knob\n/proc/sys/kernel/maps_protect has been added, with corresponding updates to\nthe procfs documentation.\n\n[akpm@linux-foundation.org: build fixes]\n[akpm@linux-foundation.org: New sysctl numbers are old hat]\nSigned-off-by: Kees Cook \u003ckees@outflux.net\u003e\nCc: Arjan van de Ven \u003carjan@infradead.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "b813e931b4c8235bb42e301096ea97dbdee3e8fe", "tree": "f8182687bffe8e3b95bac69b2cc7fdfe674ddc53", "parents": [ "f79f177c25016647cc92ffac8afa7cb96ce47011" ], "author": { "name": "David Rientjes", "email": "rientjes@google.com", "time": "Sun May 06 14:49:24 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Mon May 07 12:12:52 2007 -0700" }, "message": "smaps: add clear_refs file to clear reference\n\nAdds /proc/pid/clear_refs. When any non-zero number is written to this file,\npte_mkold() and ClearPageReferenced() is called for each pte and its\ncorresponding page, respectively, in that task\u0027s VMAs. This file is only\nwritable by the user who owns the task.\n\nIt is now possible to measure _approximately_ how much memory a task is using\nby clearing the reference bits with\n\n\techo 1 \u003e /proc/pid/clear_refs\n\nand checking the reference count for each VMA from the /proc/pid/smaps output\nat a measured time interval. For example, to observe the approximate change\nin memory footprint for a task, write a script that clears the references\n(echo 1 \u003e /proc/pid/clear_refs), sleeps, and then greps for Pgs_Referenced and\nextracts the size in kB. Add the sizes for each VMA together for the total\nreferenced footprint. Moments later, repeat the process and observe the\ndifference.\n\nFor example, using an efficient Mozilla:\n\n\taccumulated time\t\treferenced memory\n\t----------------\t\t-----------------\n\t\t 0 s\t\t\t\t 408 kB\n\t\t 1 s\t\t\t\t 408 kB\n\t\t 2 s\t\t\t\t 556 kB\n\t\t 3 s\t\t\t\t1028 kB\n\t\t 4 s\t\t\t\t 872 kB\n\t\t 5 s\t\t\t\t1956 kB\n\t\t 6 s\t\t\t\t 416 kB\n\t\t 7 s\t\t\t\t1560 kB\n\t\t 8 s\t\t\t\t2336 kB\n\t\t 9 s\t\t\t\t1044 kB\n\t\t10 s\t\t\t\t 416 kB\n\nThis is a valuable tool to get an approximate measurement of the memory\nfootprint for a task.\n\nCc: Hugh Dickins \u003chugh@veritas.com\u003e\nCc: Paul Mundt \u003clethal@linux-sh.org\u003e\nCc: Christoph Lameter \u003cclameter@sgi.com\u003e\nSigned-off-by: David Rientjes \u003crientjes@google.com\u003e\n[akpm@linux-foundation.org: build fixes]\n[mpm@selenic.com: rename for_each_pmd]\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "a2a316fd068c455c609ecc155dcfaa7e208d29fe", "tree": "9839e2c7e05e9d25241fa7c7b27fd06214120292", "parents": [ "ae40eb1ef30ab4120bd3c8b7e3da99ee53d27a23" ], "author": { "name": "Stephen Hemminger", "email": "shemminger@linux-foundation.org", "time": "Thu Mar 08 20:41:08 2007 -0800" }, "committer": { "name": "David S. Miller", "email": "davem@sunset.davemloft.net", "time": "Wed Apr 25 22:24:05 2007 -0700" }, "message": "[NET]: Replace CONFIG_NET_DEBUG with sysctl.\n\nCovert network warning messages from a compile time to runtime choice.\nRemoves kernel config option and replaces it with new /proc/sys/net/core/warnings.\n\nSigned-off-by: Stephen Hemminger \u003cshemminger@linux-foundation.org\u003e\nSigned-off-by: David S. Miller \u003cdavem@davemloft.net\u003e\n" }, { "commit": "f9c99463b0cd05603d125c915e2886d55a686b82", "tree": "1ad8dbe05e053bf47fed277ea269993e4c8cec40", "parents": [ "721c04c65f5905ef64732394f6ae147be0aebf69" ], "author": { "name": "Roland Kletzing", "email": "devzero@web.de", "time": "Mon Mar 05 00:30:54 2007 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Mon Mar 05 07:57:54 2007 -0800" }, "message": "[PATCH] Documentation for io-accounting / reporting via procfs\n\nAdd some documentation for the new and very useful io-accounting feature.\nIt\u0027s being added to Documentation/filesystems/proc.txt\n\nSigned-off-by: Roland Kletzing \u003cdevzero@web.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "4ae0edc21b152c126e4a8c94ad5391f8ea051b31", "tree": "4b2800a40527316f36a329cf20782293d081e80e", "parents": [ "fa00e7e152690adc17fdc318e64909d4aff1763e" ], "author": { "name": "Matt LaPlante", "email": "kernel1@cyberdogtech.com", "time": "Thu Nov 30 04:58:40 2006 +0100" }, "committer": { "name": "Adrian Bunk", "email": "bunk@stusta.de", "time": "Thu Nov 30 04:58:40 2006 +0100" }, "message": "Fix typos in /Documentation : \u0027U-Z\u0027\n\nThis patch fixes typos in various Documentation txts. The patch addresses some\n+words starting with the letters \u0027U-Z\u0027.\n\nLooks like I made it through the alphabet...just in time to start over again\n+too! Maybe I can fit more profound fixes into the next round...? Time will\n+tell. :)\n\nSigned-off-by: Matt LaPlante \u003ckernel1@cyberdogtech.com\u003e\nAcked-by: Randy Dunlap \u003crdunlap@xenotime.net\u003e\nSigned-off-by: Adrian Bunk \u003cbunk@stusta.de\u003e\n" }, { "commit": "fa00e7e152690adc17fdc318e64909d4aff1763e", "tree": "8d22553cc2ff2505a8973b3b7a37c718cac8926b", "parents": [ "98c4f0c336afe4318c12397bc74910d86ee036a2" ], "author": { "name": "Matt LaPlante", "email": "kernel1@cyberdogtech.com", "time": "Thu Nov 30 04:55:36 2006 +0100" }, "committer": { "name": "Adrian Bunk", "email": "bunk@stusta.de", "time": "Thu Nov 30 04:55:36 2006 +0100" }, "message": "Fix typos in /Documentation : \u0027T\u0027\u0027\n\nThis patch fixes typos in various Documentation txts. The patch addresses some\n+words starting with the letter \u0027T\u0027.\n\nSigned-off-by: Matt LaPlante \u003ckernel1@cyberdogtech.com\u003e\nAcked-by: Randy Dunlap \u003crdunlap@xenotime.net\u003e\nSigned-off-by: Adrian Bunk \u003cbunk@stusta.de\u003e\n" }, { "commit": "53cb47268e6b38180d9f253527135e1c69c5d310", "tree": "b264d89e3d21f0365fc4df0f32f5070bb4c6e91a", "parents": [ "d6bc8ac9e13e466e844313b590fbc49f7f1abdea" ], "author": { "name": "Matt LaPlante", "email": "kernel1@cyberdogtech.com", "time": "Tue Oct 03 22:55:17 2006 +0200" }, "committer": { "name": "Adrian Bunk", "email": "bunk@stusta.de", "time": "Tue Oct 03 22:55:17 2006 +0200" }, "message": "Fix typos in Documentation/: \u0027S\u0027\n\nThis patch fixes typos in various Documentation txts. The patch addresses\nsome words starting with the letter \u0027S\u0027.\n\nSigned-off-by: Matt LaPlante \u003ckernel1@cyberdogtech.com\u003e\nAcked-by: Alan Cox \u003calan@redhat.com\u003e\nAcked-by: Randy Dunlap \u003crdunlap@xenotime.net\u003e\nSigned-off-by: Adrian Bunk \u003cbunk@stusta.de\u003e\n" }, { "commit": "84eb8d0608af1576175307ed8fb3c8fde329e579", "tree": "13f3223e6907ebe309328d460fe51ce7ac346ae1", "parents": [ "992caacf1141b31e94540eb31e0540e3da3a5e25" ], "author": { "name": "Matt LaPlante", "email": "kernel1@cyberdogtech.com", "time": "Tue Oct 03 22:53:09 2006 +0200" }, "committer": { "name": "Adrian Bunk", "email": "bunk@stusta.de", "time": "Tue Oct 03 22:53:09 2006 +0200" }, "message": "Fix \"can not\" in Documentation and Kconfig\n\nRandy brought it to my attention that in proper english \"can not\" should always\nbe written \"cannot\". I donot see any reason to argue, even if I mightnot\nunderstand why this rule exists. This patch fixes \"can not\" in several\nDocumentation files as well as three Kconfigs.\n\nSigned-off-by: Matt LaPlante \u003ckernel1@cyberdogtech.com\u003e\nAcked-by: Randy Dunlap \u003crdunlap@xenotime.net\u003e\nSigned-off-by: Adrian Bunk \u003cbunk@stusta.de\u003e\n" }, { "commit": "2fe0ae78c6975d6fa2fc0c84f2b8944543054105", "tree": "005a185c1043f5b99f4cd851ad071d6e95025064", "parents": [ "a2ffd2751683f4275d4d1aa5ce37e5a6a1ae21df" ], "author": { "name": "Matt LaPlante", "email": "kernel1@cyberdogtech.com", "time": "Tue Oct 03 22:50:39 2006 +0200" }, "committer": { "name": "Adrian Bunk", "email": "bunk@stusta.de", "time": "Tue Oct 03 22:50:39 2006 +0200" }, "message": "Fix typos in Documentation/: \u0027H\u0027-\u0027M\u0027\n\nThis patch fixes typos in various Documentation txts. The patch addresses\nsome words starting with the letters \u0027H\u0027-\u0027M\u0027.\n\nSigned-off-by: Matt LaPlante \u003ckernel1@cyberdogtech.com\u003e\nAcked-by: Randy Dunlap \u003crdunlap@xenotime.net\u003e\nSigned-off-by: Adrian Bunk \u003cbunk@stusta.de\u003e\n" }, { "commit": "3f6dee9b2a22cc66050682287a77d5fccadb9733", "tree": "2670d9a0e9f445cc60e52b85f33ebcfef101ec86", "parents": [ "cab00891c5489cb6d0cde0a55d39bd5f2871fa70" ], "author": { "name": "Matt LaPlante", "email": "kernel1@cyberdogtech.com", "time": "Tue Oct 03 22:45:33 2006 +0200" }, "committer": { "name": "Adrian Bunk", "email": "bunk@stusta.de", "time": "Tue Oct 03 22:45:33 2006 +0200" }, "message": "Fix some typos in Documentation/: \u0027A\u0027\n\nThis patch fixes typos in various Documentation txts.\nThis patch addresses some words starting with the letter \u0027A\u0027.\n\nSigned-off-by: Matt LaPlante \u003ckernel1@cyberdogtech.com\u003e\nAcked-by: Randy Dunlap \u003crdunlap@xenotime.net\u003e\nAcked-by: Alan Cox \u003calan@redhat.com\u003e\nSigned-off-by: Adrian Bunk \u003cbunk@stusta.de\u003e\n" }, { "commit": "d7ff0dbf45ee8a7c4802ff46844e6e8167b7f360", "tree": "42a5f6bd33a5decb8c3a0bb6ad8fcce3120b7e56", "parents": [ "db630637b2f192bea2ba1c000e9cbe4e542a03ea" ], "author": { "name": "Jan-Frode Myklebust", "email": "mykleb@no.ibm.com", "time": "Fri Sep 29 01:59:45 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Fri Sep 29 09:18:10 2006 -0700" }, "message": "[PATCH] oom_adj/oom_score documentation\n\nI was looking for the a way around an OOM-problem, and found a couple of\nundocumented new features for tuning the OOM-score of individual processes.\n Here\u0027s a small documentation patch for /proc/\u003cpid\u003e/oom_adj and\n/proc/\u003cpid\u003e/oom_score.\n\nSigned-off-by: Jan-Frode Myklebust \u003cmykleb@no.ibm.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "e33e89ab1a8d295de0500b697f4f31c3ceee9aa2", "tree": "51a7955a1a67f65169278a97d3d54305cb18e8ae", "parents": [ "407984f1af259b31957c7c05075a454a751bb801" ], "author": { "name": "Don Zickus", "email": "dzickus@redhat.com", "time": "Tue Sep 26 10:52:27 2006 +0200" }, "committer": { "name": "Andi Kleen", "email": "andi@basil.nowhere.org", "time": "Tue Sep 26 10:52:27 2006 +0200" }, "message": "[PATCH] x86: Add abilty to enable/disable nmi watchdog from procfs (update)\n\nAdds a new /proc/sys/kernel/nmi_watchdog call that will enable/disable the\nnmi watchdog.\n\nBy entering a non-zero value here, a user can enable the nmi watchdog to\nmonitor the online cpus in the system. By entering a zero value here, a\nuser can disable the nmi watchdog and free up a performance counter which\ncould then be utilized by the oprofile subsystem, otherwise oprofile may be\nshort a counter when in use.\n\nSigned-off-by: Don Zickus \u003cdzickus@redhat.com\u003e\nSigned-off-by: Andi Kleen \u003cak@suse.de\u003e\nCc: Andi Kleen \u003cak@muc.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\n" }, { "commit": "c30fe7f73194650148b58ee80908c1bc38246397", "tree": "0433d79fb7c737f838aa2b787b5d9682bc60c66c", "parents": [ "c690a72253b962b7274559f2cdf4844553076c03" ], "author": { "name": "Uwe Zeisberger", "email": "zeisberg@informatik.uni-freiburg.de", "time": "Fri Mar 24 18:23:14 2006 +0100" }, "committer": { "name": "Adrian Bunk", "email": "bunk@stusta.de", "time": "Fri Mar 24 18:23:14 2006 +0100" }, "message": "fix typos \"wich\" -\u003e \"which\"\n\nSigned-off-by: Uwe Zeisberger \u003czeisberg@informatik.uni-freiburg.de\u003e\nSigned-off-by: Adrian Bunk \u003cbunk@stusta.de\u003e\n" }, { "commit": "e82443c092fc37a907c117d36f44b6fe143567ae", "tree": "f54f9011ad0fcedf3540d14e2e6623395969e3f5", "parents": [ "c28ab5d23a9c8dd99f12602e6ae7feba6f0b43ea" ], "author": { "name": "Adrian Bunk", "email": "bunk@stusta.de", "time": "Tue Jan 10 00:20:30 2006 +0100" }, "committer": { "name": "Adrian Bunk", "email": "bunk@r063144.stusta.swh.mhn.de", "time": "Tue Jan 10 00:20:30 2006 +0100" }, "message": "Documentation/filesystems/proc.txt: indentation fix\n\nSigned-off-by: Adrian Bunk \u003cbunk@stusta.de\u003e\n" }, { "commit": "9d0243bca345d5ce25d3f4b74b7facb3a6df1232", "tree": "a3a0a763bf83a483282dc1c3caab587941a98fc2", "parents": [ "bec6b0c89b234090681a4516e20ac5debe3e7c59" ], "author": { "name": "Andrew Morton", "email": "akpm@osdl.org", "time": "Sun Jan 08 01:00:39 2006 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Sun Jan 08 20:12:40 2006 -0800" }, "message": "[PATCH] drop-pagecache\n\nAdd /proc/sys/vm/drop_caches. When written to, this will cause the kernel to\ndiscard as much pagecache and/or reclaimable slab objects as it can. THis\noperation requires root permissions.\n\nIt won\u0027t drop dirty data, so the user should run `sync\u0027 first.\n\nCaveats:\n\na) Holds inode_lock for exorbitant amounts of time.\n\nb) Needs to be taught about NUMA nodes: propagate these all the way through\n so the discarding can be controlled on a per-node basis.\n\nThis is a debugging feature: useful for getting consistent results between\nfilesystem benchmarks. We could possibly put it under a config option, but\nit\u0027s less than 300 bytes.\n\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "af97c7220a0376beed827e72e3bb27731af7109d", "tree": "dae9462270cf9345184b23c95fedbe0fb414514b", "parents": [ "ddb99f3d35b178f0715aab2f9d9ab25f61814347" ], "author": { "name": "Chuck Ebbert", "email": "76306.1226@compuserve.com", "time": "Fri Sep 09 13:10:15 2005 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Fri Sep 09 14:03:43 2005 -0700" }, "message": "[PATCH] docs: fix misinformation about overcommit_memory\n\nSomeone complained about the docs for vm_overcommit_memory being wrong.\nThis patch copies the text from the vm documentation into procfs.\n\nSigned-off-by: Chuck Ebbert \u003c76306.1226@compuserve.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "e070ad49f31155d872d8e96cab2142840993e3c0", "tree": "16d5bfd3d7627d6616c6b1008fac80e4cf77379e", "parents": [ "00e145b6d59a16dd7740197a18f7abdb3af004a9" ], "author": { "name": "Mauricio Lin", "email": "mauriciolin@gmail.com", "time": "Sat Sep 03 15:55:10 2005 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@evo.osdl.org", "time": "Mon Sep 05 00:05:49 2005 -0700" }, "message": "[PATCH] add /proc/pid/smaps\n\nAdd a \"smaps\" entry to /proc/pid: show howmuch memory is resident in each\nmapping.\n\nPeople that want to perform a memory consumption analysing can use it\nmainly if someone needs to figure out which libraries can be reduced for\nembedded systems. So the new features are the physical size of shared and\nclean [or dirty]; private and clean [or dirty].\n\nTake a look the example below:\n\n# cat /proc/4576/smaps\n\n08048000-080dc000 r-xp /bin/bash\nSize: 592 KB\nRss: 500 KB\nShared_Clean: 500 KB\nShared_Dirty: 0 KB\nPrivate_Clean: 0 KB\nPrivate_Dirty: 0 KB\n080dc000-080e2000 rw-p /bin/bash\nSize: 24 KB\nRss: 24 KB\nShared_Clean: 0 KB\nShared_Dirty: 0 KB\nPrivate_Clean: 0 KB\nPrivate_Dirty: 24 KB\n080e2000-08116000 rw-p\nSize: 208 KB\nRss: 208 KB\nShared_Clean: 0 KB\nShared_Dirty: 0 KB\nPrivate_Clean: 0 KB\nPrivate_Dirty: 208 KB\nb7e2b000-b7e34000 r-xp /lib/tls/libnss_files-2.3.2.so\nSize: 36 KB\nRss: 12 KB\nShared_Clean: 12 KB\nShared_Dirty: 0 KB\nPrivate_Clean: 0 KB\nPrivate_Dirty: 0 KB\n...\n\n(Includes a cleanup from \"Richard Purdie\" \u003crpurdie@rpsys.net\u003e)\n\nFrom: Torsten Foertsch \u003ctorsten.foertsch@gmx.net\u003e\n\nshow_smap calls first show_map and then prints its additional information to\nthe seq_file. show_map checks if all it has to print fits into the buffer and\nif yes marks the current vma as written. While that is correct for show_map\nit is not for show_smap. Here the vma should be marked as written only after\nthe additional information is also written.\n\nThe attached patch cures the problem. It moves the functionality of the\nshow_map function to a new function show_map_internal that is called with an\nadditional struct mem_size_stats* argument. Then show_map calls\nshow_map_internal with NULL as struct mem_size_stats* whereas show_smap calls\nit with a real pointer. Now the final\n\n\tif (m-\u003ecount \u003c m-\u003esize) /* vma is copied successfully */\n\t\tm-\u003eversion \u003d (vma !\u003d get_gate_vma(task))? vma-\u003evm_start: 0;\n\nis done only if the whole entry fits into the buffer.\n\nSigned-off-by: Hugh Dickins \u003chugh@veritas.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "c31403a1f5a761599df38bcc2d6ba94f24320c33", "tree": "b753650fba949d8b56c65d024b7e82363b894871", "parents": [ "fd4a3244941ed74fffc24b64857977270e6f64e2" ], "author": { "name": "Cosmin Nicolaescu", "email": "can29@bandersnatch.cs.drexel.edu", "time": "Sun May 01 08:59:28 2005 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@ppc970.osdl.org", "time": "Sun May 01 08:59:28 2005 -0700" }, "message": "[PATCH] Documentation: remove super-{nr, max} to reflect fs/super.c\n\nThe patch updates the documentation for /proc. super-nr and super-max have\nbeen dropped from the kernel since 2.4.9 due to minor numbering issues.\nThis change was not documented in the documentation.\n\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "tree": "0bba044c4ce775e45a88a51686b5d9f90697ea9d", "parents": [], "author": { "name": "Linus Torvalds", "email": "torvalds@ppc970.osdl.org", "time": "Sat Apr 16 15:20:36 2005 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@ppc970.osdl.org", "time": "Sat Apr 16 15:20:36 2005 -0700" }, "message": "Linux-2.6.12-rc2\n\nInitial git repository build. I\u0027m not bothering with the full history,\neven though we have it. We can create a separate \"historical\" git\narchive of that later if we want to, and in the meantime it\u0027s about\n3.2GB when imported into git - space that would just make the early\ngit days unnecessarily complicated, when we don\u0027t have a lot of good\ninfrastructure for it.\n\nLet it rip!\n" } ] }