)]}' { "log": [ { "commit": "e9910846fdb19f7c5810cbe4c95e4ca6dab6a00f", "tree": "dbfea7352c38b615d92c9c207980e9640a8a5e84", "parents": [ "c91e23c63f77a7643d857a082248cf2cdb71b67c" ], "author": { "name": "akpm@linux-foundation.org", "email": "akpm@linux-foundation.org", "time": "Thu May 10 03:16:01 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Thu May 10 09:26:53 2007 -0700" }, "message": "timer: revert parenthesis fix in tbase_get_deferrable() etc\n\nOn 09-05-2007 21:10, Pallipadi, Venkatesh wrote:\n...\n\u003e On a 64 bit system, converting pointer to int causes unnecessary\n\u003e compiler warning, and intermediate long conversion was to avoid that.\n\u003e I will have to rephrase my comment to remove 32 bit value and use int,\n\u003e as that is what the function returns.\n\nSo, this patch reverts all changes done by my previous patch.\n\nI apologize for my wrong comment about \"logical error\" here.\n\nCc: \"Pallipadi, Venkatesh\" \u003cvenkatesh.pallipadi@intel.com\u003e\nCc: Satyam Sharma \u003csatyam.sharma@gmail.com\u003e\nCc: Oleg Nesterov \u003coleg@tv-sign.ru\u003e\nSigned-off-by: Jarek Poplawski \u003cjarkao2@o2.pl\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "aabded9c3aab5160ae2ca3dd1fa0fa37f3d510e4", "tree": "8544d546735bcb975b8dec296eb9b6dc6531fb2a", "parents": [ "9a9136e270af14da506f66bcafcc506b86a86498", "f1a1eb299a8422c3e8d41753095bec44b2493398" ], "author": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Wed May 09 12:56:01 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Wed May 09 12:56:01 2007 -0700" }, "message": "Merge branch \u0027master\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc\n\n* \u0027master\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc:\n [POWERPC] Further fixes for the removal of 4level-fixup hack from ppc32\n [POWERPC] EEH: log all PCI-X and PCI-E AER registers\n [POWERPC] EEH: capture and log pci state on error\n [POWERPC] EEH: Split up long error msg\n [POWERPC] EEH: log error only after driver notification.\n [POWERPC] fsl_soc: Make mac_addr const in fs_enet_of_init().\n [POWERPC] Don\u0027t use SLAB/SLUB for PTE pages\n [POWERPC] Spufs support for 64K LS mappings on 4K kernels\n [POWERPC] Add ability to 4K kernel to hash in 64K pages\n [POWERPC] Introduce address space \"slices\"\n [POWERPC] Small fixes \u0026 cleanups in segment page size demotion\n [POWERPC] iSeries: Make HVC_ISERIES the default\n [POWERPC] iSeries: suppress build warning in lparmap.c\n [POWERPC] Mark pages that don\u0027t exist as nosave\n [POWERPC] swsusp: Introduce register_nosave_region_late\n" }, { "commit": "9a9136e270af14da506f66bcafcc506b86a86498", "tree": "b4d0a6877d92635134b7a944d0032fbc43227fd2", "parents": [ "3960208f9ca0cf6bdb31c21c59ac0526303f8b34", "7bb2acb76e8168ca5d0bde5a5a56585a11b3525a" ], "author": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Wed May 09 12:54:17 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Wed May 09 12:54:17 2007 -0700" }, "message": "Merge git://git.kernel.org/pub/scm/linux/kernel/git/bunk/trivial\n\n* git://git.kernel.org/pub/scm/linux/kernel/git/bunk/trivial: (25 commits)\n sound: convert \"sound\" subdirectory to UTF-8\n MAINTAINERS: Add cxacru website/mailing list\n include files: convert \"include\" subdirectory to UTF-8\n general: convert \"kernel\" subdirectory to UTF-8\n documentation: convert the Documentation directory to UTF-8\n Convert the toplevel files CREDITS and MAINTAINERS to UTF-8.\n remove broken URLs from net drivers\u0027 output\n Magic number prefix consistency change to Documentation/magic-number.txt\n trivial: s/i_sem /i_mutex/\n fix file specification in comments\n drivers/base/platform.c: fix small typo in doc\n misc doc and kconfig typos\n Remove obsolete fat_cvf help text\n Fix occurrences of \"the the \"\n Fix minor typoes in kernel/module.c\n Kconfig: Remove reference to external mqueue library\n Kconfig: A couple of grammatical fixes in arch/i386/Kconfig\n Correct comments in genrtc.c to refer to correct /proc file.\n Fix more \"deprecated\" spellos.\n Fix \"deprecated\" typoes.\n ...\n\nFix trivial comment conflict in kernel/relay.c.\n" }, { "commit": "f7e4217b007d1f73e7e3cf10ba4fea4a608c603f", "tree": "9c3932bb871d4b6727dc588e4d6c9987637aaee5", "parents": [ "c9f4f06d3191bd91c1a081b54a6c8e913e7b8a83" ], "author": { "name": "Roman Zippel", "email": "zippel@linux-m68k.org", "time": "Wed May 09 02:35:17 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Wed May 09 12:30:56 2007 -0700" }, "message": "rename thread_info to stack\n\nThis finally renames the thread_info field in task structure to stack, so that\nthe assumptions about this field are gone and archs have more freedom about\nplacing the thread_info structure.\n\nNonbroken archs which have a proper thread pointer can do the access to both\ncurrent thread and task structure via a single pointer.\n\nIt\u0027ll allow for a few more cleanups of the fork code, from which e.g. ia64\ncould benefit.\n\nSigned-off-by: Roman Zippel \u003czippel@linux-m68k.org\u003e\n[akpm@linux-foundation.org: build fix]\nCc: Richard Henderson \u003crth@twiddle.net\u003e\nCc: Ivan Kokshaysky \u003cink@jurassic.park.msu.ru\u003e\nCc: Russell King \u003crmk@arm.linux.org.uk\u003e\nCc: Ian Molton \u003cspyro@f2s.com\u003e\nCc: Haavard Skinnemoen \u003chskinnemoen@atmel.com\u003e\nCc: Mikael Starvik \u003cstarvik@axis.com\u003e\nCc: David Howells \u003cdhowells@redhat.com\u003e\nCc: Yoshinori Sato \u003cysato@users.sourceforge.jp\u003e\nCc: \"Luck, Tony\" \u003ctony.luck@intel.com\u003e\nCc: Hirokazu Takata \u003ctakata@linux-m32r.org\u003e\nCc: Geert Uytterhoeven \u003cgeert@linux-m68k.org\u003e\nCc: Roman Zippel \u003czippel@linux-m68k.org\u003e\nCc: Greg Ungerer \u003cgerg@uclinux.org\u003e\nCc: Ralf Baechle \u003cralf@linux-mips.org\u003e\nCc: Ralf Baechle \u003cralf@linux-mips.org\u003e\nCc: Paul Mackerras \u003cpaulus@samba.org\u003e\nCc: Benjamin Herrenschmidt \u003cbenh@kernel.crashing.org\u003e\nCc: Heiko Carstens \u003cheiko.carstens@de.ibm.com\u003e\nCc: Martin Schwidefsky \u003cschwidefsky@de.ibm.com\u003e\nCc: Paul Mundt \u003clethal@linux-sh.org\u003e\nCc: Kazumoto Kojima \u003ckkojima@rr.iij4u.or.jp\u003e\nCc: Richard Curnow \u003crc@rc0.org.uk\u003e\nCc: William Lee Irwin III \u003cwli@holomorphy.com\u003e\nCc: \"David S. Miller\" \u003cdavem@davemloft.net\u003e\nCc: Jeff Dike \u003cjdike@addtoit.com\u003e\nCc: Paolo \u0027Blaisorblade\u0027 Giarrusso \u003cblaisorblade@yahoo.it\u003e\nCc: Miles Bader \u003cuclinux-v850@lsi.nec.co.jp\u003e\nCc: Andi Kleen \u003cak@muc.de\u003e\nCc: Chris Zankel \u003cchris@zankel.net\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "c9f4f06d3191bd91c1a081b54a6c8e913e7b8a83", "tree": "fe6bb926f612e67b1e57c6a448c7e5d41dd69dad", "parents": [ "e61a1c1c4f240cec61300c8f27518c3e47570fd4" ], "author": { "name": "Roman Zippel", "email": "zippel@linux-m68k.org", "time": "Wed May 09 02:35:16 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Wed May 09 12:30:56 2007 -0700" }, "message": "wrap access to thread_info\n\nRecently a few direct accesses to the thread_info in the task structure snuck\nback, so this wraps them with the appropriate wrapper.\n\nSigned-off-by: Roman Zippel \u003czippel@linux-m68k.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "b52f52a093bb1e841e014c2087b5bee7162da413", "tree": "7b7135897195fc9d14473d3ab824d59a4b65e5ad", "parents": [ "4037d452202e34214e8a939fa5621b2b3bbb45b7" ], "author": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Wed May 09 02:35:15 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Wed May 09 12:30:56 2007 -0700" }, "message": "clocksource: fix resume logic\n\nWe need to make sure that the clocksources are resumed, when timekeeping is\nresumed. The current resume logic does not guarantee this.\n\nAdd a resume function pointer to the clocksource struct, so clocksource\ndrivers which need to reinitialize the clocksource can provide a resume\nfunction.\n\nAdd a resume function, which calls the maybe available clocksource resume\nfunctions and resets the watchdog function, so a stable TSC can be used\naccross suspend/resume.\n\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\nCc: john stultz \u003cjohnstul@us.ibm.com\u003e\nCc: Andi Kleen \u003cak@suse.de\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": "77461ab33229d48614402decfb1b2eaa6d446861", "tree": "d2675ff079e887645ed25ae5f793aa907d53c66a", "parents": [ "d1187ed21026fd512b87851d0ca26d9ae16f9059" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Wed May 09 02:35:13 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Wed May 09 12:30:56 2007 -0700" }, "message": "Make vm statistics update interval configurable\n\nMake it configurable. Code in mm makes the vm statistics intervals\nindependent from the cache reaper use that opportunity to make it\nconfigurable.\n\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "455c017ae3934797653549704c286e7bcc3a9397", "tree": "7b5b67916b064e3ce7868082e0915f37b437aeb8", "parents": [ "8bb7844286fb8c9fce6f65d8288aeb09d03a5e0d" ], "author": { "name": "Rafael J. Wysocki", "email": "rjw@sisk.pl", "time": "Wed May 09 02:35:11 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Wed May 09 12:30:56 2007 -0700" }, "message": "microcode: use suspend-related CPU hotplug notifications\n\nMake the microcode driver use the suspend-related CPU hotplug notifications\nto handle the CPU hotplug events occuring during system-wide suspend and\nresume transitions. Remove the global variable suspend_cpu_hotplug\npreviously used for this purpose.\n\nSigned-off-by: Rafael J. Wysocki \u003crjw@sisk.pl\u003e\nCc: Gautham R Shenoy \u003cego@in.ibm.com\u003e\nCc: Pavel Machek \u003cpavel@ucw.cz\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "8bb7844286fb8c9fce6f65d8288aeb09d03a5e0d", "tree": "f4e305edaedbde05774bb1e4acd89a9475661d2e", "parents": [ "f37bc2712b54ec641e0c0c8634f1a4b61d9956c0" ], "author": { "name": "Rafael J. Wysocki", "email": "rjw@sisk.pl", "time": "Wed May 09 02:35:10 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Wed May 09 12:30:56 2007 -0700" }, "message": "Add suspend-related notifications for CPU hotplug\n\nSince nonboot CPUs are now disabled after tasks and devices have been\nfrozen and the CPU hotplug infrastructure is used for this purpose, we need\nspecial CPU hotplug notifications that will help the CPU-hotplug-aware\nsubsystems distinguish normal CPU hotplug events from CPU hotplug events\nrelated to a system-wide suspend or resume operation in progress. This\npatch introduces such notifications and causes them to be used during\nsuspend and resume transitions. It also changes all of the\nCPU-hotplug-aware subsystems to take these notifications into consideration\n(for now they are handled in the same way as the corresponding \"normal\"\nones).\n\n[oleg@tv-sign.ru: cleanups]\nSigned-off-by: Rafael J. Wysocki \u003crjw@sisk.pl\u003e\nCc: Gautham R Shenoy \u003cego@in.ibm.com\u003e\nCc: Pavel Machek \u003cpavel@ucw.cz\u003e\nSigned-off-by: Oleg Nesterov \u003coleg@tv-sign.ru\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "38a23e311b6cd389b9d8af2ea6c28c8cffbe581c", "tree": "742b2d0e5e6f7015afe92dfa87ed22964082b8cb", "parents": [ "34f01cc1f512fa783302982776895c73714ebbc2" ], "author": { "name": "Jarek Poplawski", "email": "jarkao2@o2.pl", "time": "Wed May 09 02:35:05 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Wed May 09 12:30:55 2007 -0700" }, "message": "timer: parenthesis fix in tbase_get_deferrable() etc\n\nSigned-off-by: Jarek Poplawski \u003cjarkao2@o2.pl\u003e\nCc: Thomas Gleixner \u003ctglx@linutronix.de\u003e\nCc: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "34f01cc1f512fa783302982776895c73714ebbc2", "tree": "776b50ee9592803853b3b4c1845f8ba527b868b9", "parents": [ "d0aa7a70bf03b9de9e995ab272293be1f7937822" ], "author": { "name": "Eric Dumazet", "email": "dada1@cosmosbay.com", "time": "Wed May 09 02:35:04 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Wed May 09 12:30:55 2007 -0700" }, "message": "FUTEX: new PRIVATE futexes\n\n Analysis of current linux futex code :\n --------------------------------------\n\nA central hash table futex_queues[] holds all contexts (futex_q) of waiting\nthreads.\n\nEach futex_wait()/futex_wait() has to obtain a spinlock on a hash slot to\nperform lookups or insert/deletion of a futex_q.\n\nWhen a futex_wait() is done, calling thread has to :\n\n1) - Obtain a read lock on mmap_sem to be able to validate the user pointer\n (calling find_vma()). This validation tells us if the futex uses\n an inode based store (mapped file), or mm based store (anonymous mem)\n\n2) - compute a hash key\n\n3) - Atomic increment of reference counter on an inode or a mm_struct\n\n4) - lock part of futex_queues[] hash table\n\n5) - perform the test on value of futex.\n\t(rollback is value !\u003d expected_value, returns EWOULDBLOCK)\n\t(various loops if test triggers mm faults)\n\n6) queue the context into hash table, release the lock got in 4)\n\n7) - release the read_lock on mmap_sem\n\n \u003cblock\u003e\n\n8) Eventually unqueue the context (but rarely, as this part  may be done\n by the futex_wake())\n\nFutexes were designed to improve scalability but current implementation has\nvarious problems :\n\n- Central hashtable :\n\n This means scalability problems if many processes/threads want to use\n futexes at the same time.\n This means NUMA unbalance because this hashtable is located on one node.\n\n- Using mmap_sem on every futex() syscall :\n\n Even if mmap_sem is a rw_semaphore, up_read()/down_read() are doing atomic\n ops on mmap_sem, dirtying cache line :\n - lot of cache line ping pongs on SMP configurations.\n\n mmap_sem is also extensively used by mm code (page faults, mmap()/munmap())\n Highly threaded processes might suffer from mmap_sem contention.\n\n mmap_sem is also used by oprofile code. Enabling oprofile hurts threaded\n programs because of contention on the mmap_sem cache line.\n\n- Using an atomic_inc()/atomic_dec() on inode ref counter or mm ref counter:\n It\u0027s also a cache line ping pong on SMP. It also increases mmap_sem hold time\n because of cache misses.\n\nMost of these scalability problems come from the fact that futexes are in\none global namespace. As we use a central hash table, we must make sure\nthey are all using the same reference (given by the mm subsystem). We\nchose to force all futexes be \u0027shared\u0027. This has a cost.\n\nBut fact is POSIX defined PRIVATE and SHARED, allowing clear separation,\nand optimal performance if carefuly implemented. Time has come for linux\nto have better threading performance.\n\nThe goal is to permit new futex commands to avoid :\n - Taking the mmap_sem semaphore, conflicting with other subsystems.\n - Modifying a ref_count on mm or an inode, still conflicting with mm or fs.\n\nThis is possible because, for one process using PTHREAD_PROCESS_PRIVATE\nfutexes, we only need to distinguish futexes by their virtual address, no\nmatter the underlying mm storage is.\n\nIf glibc wants to exploit this new infrastructure, it should use new\n_PRIVATE futex subcommands for PTHREAD_PROCESS_PRIVATE futexes. And be\nprepared to fallback on old subcommands for old kernels. Using one global\nvariable with the FUTEX_PRIVATE_FLAG or 0 value should be OK.\n\nPTHREAD_PROCESS_SHARED futexes should still use the old subcommands.\n\nCompatibility with old applications is preserved, they still hit the\nscalability problems, but new applications can fly :)\n\nNote : the same SHARED futex (mapped on a file) can be used by old binaries\n*and* new binaries, because both binaries will use the old subcommands.\n\nNote : Vast majority of futexes should be using PROCESS_PRIVATE semantic,\nas this is the default semantic. Almost all applications should benefit\nof this changes (new kernel and updated libc)\n\nSome bench results on a Pentium M 1.6 GHz (SMP kernel on a UP machine)\n\n/* calling futex_wait(addr, value) with value !\u003d *addr */\n433 cycles per futex(FUTEX_WAIT) call (mixing 2 futexes)\n424 cycles per futex(FUTEX_WAIT) call (using one futex)\n334 cycles per futex(FUTEX_WAIT_PRIVATE) call (mixing 2 futexes)\n334 cycles per futex(FUTEX_WAIT_PRIVATE) call (using one futex)\nFor reference :\n187 cycles per getppid() call\n188 cycles per umask() call\n181 cycles per ni_syscall() call\n\nSigned-off-by: Eric Dumazet \u003cdada1@cosmosbay.com\u003e\nPierre Peiffer \u003cpierre.peiffer@bull.net\u003e\nCc: \"Ulrich Drepper\" \u003cdrepper@gmail.com\u003e\nCc: \"Nick Piggin\" \u003cnickpiggin@yahoo.com.au\u003e\nCc: \"Ingo Molnar\" \u003cmingo@elte.hu\u003e\nCc: Rusty Russell \u003crusty@rustcorp.com.au\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "d0aa7a70bf03b9de9e995ab272293be1f7937822", "tree": "194b30b7b8374b946f166996cb99fb95eb3b7819", "parents": [ "c19384b5b296905d4988c7c684ff540a0f9d65be" ], "author": { "name": "Pierre Peiffer", "email": "pierre.peiffer@bull.net", "time": "Wed May 09 02:35:02 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Wed May 09 12:30:55 2007 -0700" }, "message": "futex_requeue_pi optimization\n\nThis patch provides the futex_requeue_pi functionality, which allows some\nthreads waiting on a normal futex to be requeued on the wait-queue of a\nPI-futex.\n\nThis provides an optimization, already used for (normal) futexes, to be used\nwith the PI-futexes.\n\nThis optimization is currently used by the glibc in pthread_broadcast, when\nusing \"normal\" mutexes. With futex_requeue_pi, it can be used with\nPRIO_INHERIT mutexes too.\n\nSigned-off-by: Pierre Peiffer \u003cpierre.peiffer@bull.net\u003e\nCc: Ingo Molnar \u003cmingo@elte.hu\u003e\nCc: Ulrich Drepper \u003cdrepper@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": "c19384b5b296905d4988c7c684ff540a0f9d65be", "tree": "071cfe0855d409d63de80ec1b9b663738efb09de", "parents": [ "ec92d08292d3e9b0823eba138a4564d2d39f25c7" ], "author": { "name": "Pierre Peiffer", "email": "pierre.peiffer@bull.net", "time": "Wed May 09 02:35:02 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Wed May 09 12:30:55 2007 -0700" }, "message": "Make futex_wait() use an hrtimer for timeout\n\nThis patch modifies futex_wait() to use an hrtimer + schedule() in place of\nschedule_timeout().\n\nschedule_timeout() is tick based, therefore the timeout granularity is the\ntick (1 ms, 4 ms or 10 ms depending on HZ). By using a high resolution timer\nfor timeout wakeup, we can attain a much finer timeout granularity (in the\nmicrosecond range). This parallels what is already done for futex_lock_pi().\n\nThe timeout passed to the syscall is no longer converted to jiffies and is\ntherefore passed to do_futex() and futex_wait() as an absolute ktime_t\ntherefore keeping nanosecond resolution.\n\nAlso this removes the need to pass the nanoseconds timeout part to\nfutex_lock_pi() in val2.\n\nIn futex_wait(), if there is no timeout then a regular schedule() is\nperformed. Otherwise, an hrtimer is fired before schedule() is called.\n\n[akpm@linux-foundation.org: fix `make headers_check\u0027]\nSigned-off-by: Sebastien Dugue \u003csebastien.dugue@bull.net\u003e\nSigned-off-by: Pierre Peiffer \u003cpierre.peiffer@bull.net\u003e\nCc: Ingo Molnar \u003cmingo@elte.hu\u003e\nCc: Ulrich Drepper \u003cdrepper@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": "ec92d08292d3e9b0823eba138a4564d2d39f25c7", "tree": "4dc94792e83d51b036d52e92e8d4f137a2efce97", "parents": [ "f34c506b0385b43abd25c490335036ecbb173aed" ], "author": { "name": "Pierre Peiffer", "email": "pierre.peiffer@bull.net", "time": "Wed May 09 02:35:00 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Wed May 09 12:30:55 2007 -0700" }, "message": "futex priority based wakeup\n\nToday, all threads waiting for a given futex are woken in FIFO order (first\nwaiter woken first) instead of priority order.\n\nThis patch makes use of plist (pirotity ordered lists) instead of simple list\nin futex_hash_bucket.\n\nAll non-RT threads are stored with priority MAX_RT_PRIO, causing them to be\nwoken last, in FIFO order (RT-threads are woken first, in priority order).\n\nSigned-off-by: Sebastien Dugue \u003csebastien.dugue@bull.net\u003e\nSigned-off-by: Pierre Peiffer \u003cpierre.peiffer@bull.net\u003e\nCc: Ingo Molnar \u003cmingo@elte.hu\u003e\nCc: Ulrich Drepper \u003cdrepper@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": "6e84d644b5929789398914b0ccf447355dec6fb0", "tree": "0de4bd0c8d3bf4cd764275f02d56d8576f376ae5", "parents": [ "7b0834c26fd796c79dfcc3939ed2b9122b75246f" ], "author": { "name": "Oleg Nesterov", "email": "oleg@tv-sign.ru", "time": "Wed May 09 02:34:46 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Wed May 09 12:30:53 2007 -0700" }, "message": "make cancel_rearming_delayed_work() reliable\n\nThanks to Jarek Poplawski for the ideas and for spotting the bug in the\ninitial draft patch.\n\ncancel_rearming_delayed_work() currently has many limitations, because it\nrequires that dwork always re-arms itself via queue_delayed_work(). So it\nhangs forever if dwork doesn\u0027t do this, or cancel_rearming_delayed_work/\ncancel_delayed_work was already called. It uses flush_workqueue() in a\nloop, so it can\u0027t be used if workqueue was freezed, and it is potentially\nlive- lockable on busy system if delay is small.\n\nWith this patch cancel_rearming_delayed_work() doesn\u0027t make any assumptions\nabout dwork, it can re-arm itself via queue_delayed_work(), or\nqueue_work(), or do nothing.\n\nAs a \"side effect\", cancel_work_sync() was changed to handle re-arming works\nas well.\n\nDisadvantages:\n\n\t- this patch adds wmb() to insert_work().\n\n\t- slowdowns the fast path (when del_timer() succeeds on entry) of\n\t cancel_rearming_delayed_work(), because wait_on_work() is called\n\t unconditionally. In that case, compared to the old version, we are\n\t doing \"unneeded\" lock/unlock for each online CPU.\n\n\t On the other hand, this means we don\u0027t need to use cancel_work_sync()\n\t after cancel_rearming_delayed_work().\n\n\t- complicates the code (.text grows by 130 bytes).\n\n[akpm@linux-foundation.org: fix speling]\nSigned-off-by: Oleg Nesterov \u003coleg@tv-sign.ru\u003e\nCc: David Chinner \u003cdgc@sgi.com\u003e\nCc: David Howells \u003cdhowells@redhat.com\u003e\nCc: Gautham Shenoy \u003cego@in.ibm.com\u003e\nAcked-by: Jarek Poplawski \u003cjarkao2@o2.pl\u003e\nCc: Srivatsa Vaddagiri \u003cvatsa@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": "7b0834c26fd796c79dfcc3939ed2b9122b75246f", "tree": "870eb42cd02b9012fd0ab06d7efb5e7596376bad", "parents": [ "10ab825bdef8df510f99c703a5a2d9b13a4e31a5" ], "author": { "name": "Gautham R Shenoy", "email": "ego@in.ibm.com", "time": "Wed May 09 02:34:41 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Wed May 09 12:30:53 2007 -0700" }, "message": "Remove kthread_bind() call from _cpu_down()\n\nWe are anyway kthread_stop()ping other per-cpu kernel threads after\nmove_task_off_dead_cpu(), so we can do it with the stop_machine_run thread\nas well.\n\nI just checked with Vatsa if there was any subtle reason why they\nhad put in the kthread_bind() in cpu.c. Vatsa cannot seem to recollect\nany and I can\u0027t see any. So let us just remove the kthread_bind.\n\nSigned-off-by: Gautham R Shenoy \u003cego@in.ibm.com\u003e\nCc: Oleg Nesterov \u003coleg@tv-sign.ru\u003e\nCc: \"Eric W. Biederman\" \u003cebiederm@xmission.com\u003e\nCc: \"Rafael J. Wysocki\" \u003crjw@sisk.pl\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "10ab825bdef8df510f99c703a5a2d9b13a4e31a5", "tree": "e4db81f26c03ba5a5bff43ed44646a4ed4509d67", "parents": [ "5de18d169739293e27e0cf9acfc75a2d2f4aa572" ], "author": { "name": "Oleg Nesterov", "email": "oleg@tv-sign.ru", "time": "Wed May 09 02:34:37 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Wed May 09 12:30:53 2007 -0700" }, "message": "change kernel threads to ignore signals instead of blocking them\n\nCurrently kernel threads use sigprocmask(SIG_BLOCK) to protect against\nsignals. This doesn\u0027t prevent the signal delivery, this only blocks\nsignal_wake_up(). Every \"killall -33 kthreadd\" means a \"struct siginfo\"\nleak.\n\nChange kthreadd_setup() to set all handlers to SIG_IGN instead of blocking\nthem (make a new helper ignore_signals() for that). If the kernel thread\nneeds some signal, it should use allow_signal() anyway, and in that case it\nshould not use CLONE_SIGHAND.\n\nNote that we can\u0027t change daemonize() (should die!) in the same way,\nbecause it can be used along with CLONE_SIGHAND. This means that\nallow_signal() still should unblock the signal to work correctly with\ndaemonize()ed threads.\n\nHowever, disallow_signal() doesn\u0027t block the signal any longer but ignores\nit.\n\nNOTE: with or without this patch the kernel threads are not protected from\nhandle_stop_signal(), this seems harmless, but not good.\n\nSigned-off-by: Oleg Nesterov \u003coleg@tv-sign.ru\u003e\nAcked-by: \"Eric W. Biederman\" \u003cebiederm@xmission.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "5de18d169739293e27e0cf9acfc75a2d2f4aa572", "tree": "3360a4235a92d787fb7e48fccfc945fa0ee15758", "parents": [ "90cce03d9bfcb28600a56efef6b0a5a4fbf6c2b1" ], "author": { "name": "Oleg Nesterov", "email": "oleg@tv-sign.ru", "time": "Wed May 09 02:34:36 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Wed May 09 12:30:53 2007 -0700" }, "message": "worker_thread: don\u0027t play with SIGCHLD and numa policy\n\nworker_thread() inherits ignored SIGCHLD and numa_default_policy() from its\nparent, kthreadd. No need to setup this again.\n\nSigned-off-by: Oleg Nesterov \u003coleg@tv-sign.ru\u003e\nAcked-by: \"Eric W. Biederman\" \u003cebiederm@xmission.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "90cce03d9bfcb28600a56efef6b0a5a4fbf6c2b1", "tree": "f0b1909311fe5662eeac7923bd7830a9811ac2aa", "parents": [ "b8a124da9261873e3e3541898d5c46d273afee34" ], "author": { "name": "Oleg Nesterov", "email": "oleg@tv-sign.ru", "time": "Wed May 09 02:34:36 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Wed May 09 12:30:53 2007 -0700" }, "message": "wait_for_helper: remove unneeded do_sigaction()\n\nallow_signal(SIGCHLD) does all necessary job, no need to call do_sigaction()\nprior to.\n\nSigned-off-by: Oleg Nesterov \u003coleg@tv-sign.ru\u003e\nCc: Rusty Russell \u003crusty@rustcorp.com.au\u003e\nCc: \"Eric W. Biederman\" \u003cebiederm@xmission.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "49d769d52e16efabd3ad47b7995522fff771371d", "tree": "cf6ec2c39ae671c3f4cae34daf9d0558ca4fcf49", "parents": [ "73c279927f89561ecb45b2dfdf9314bafcfd9f67" ], "author": { "name": "Eric W. Biederman", "email": "ebiederm@xmission.com", "time": "Wed May 09 02:34:33 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Wed May 09 12:30:53 2007 -0700" }, "message": "Change reparent_to_init to reparent_to_kthreadd\n\nWhen a kernel thread calls daemonize, instead of reparenting the thread to\ninit reparent the thread to kthreadd next to the threads created by\nkthread_create.\n\nThis is really just a stop gap until daemonize goes away, but it does\nensure no kernel threads are under init and they are all in one place that\nis easy to find.\n\nSigned-off-by: Eric W. Biederman \u003cebiederm@xmission.com\u003e\nCc: Oleg Nesterov \u003coleg@tv-sign.ru\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "73c279927f89561ecb45b2dfdf9314bafcfd9f67", "tree": "2186e28c92c6f8229ea20eb9856714186bf77a4c", "parents": [ "c93465181fed0f8f5942a41108943dadea0aa345" ], "author": { "name": "Eric W. Biederman", "email": "ebiederm@xmission.com", "time": "Wed May 09 02:34:32 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Wed May 09 12:30:53 2007 -0700" }, "message": "kthread: don\u0027t depend on work queues\n\nCurrently there is a circular reference between work queue initialization\nand kthread initialization. This prevents the kthread infrastructure from\ninitializing until after work queues have been initialized.\n\nWe want the properties of tasks created with kthread_create to be as close\nas possible to the init_task and to not be contaminated by user processes.\nThe later we start our kthreadd that creates these tasks the harder it is\nto avoid contamination from user processes and the more of a mess we have\nto clean up because the defaults have changed on us.\n\nSo this patch modifies the kthread support to not use work queues but to\ninstead use a simple list of structures, and to have kthreadd start from\ninit_task immediately after our kernel thread that execs /sbin/init.\n\nBy being a true child of init_task we only have to change those process\nsettings that we want to have different from init_task, such as our process\nname, the cpus that are allowed, blocking all signals and setting SIGCHLD\nto SIG_IGN so that all of our children are reaped automatically.\n\nBy being a true child of init_task we also naturally get our ppid set to 0\nand do not wind up as a child of PID \u003d\u003d 1. Ensuring that tasks generated\nby kthread_create will not slow down the functioning of the wait family of\nfunctions.\n\n[akpm@linux-foundation.org: use interruptible sleeps]\nSigned-off-by: Eric W. Biederman \u003cebiederm@xmission.com\u003e\nCc: Oleg Nesterov \u003coleg@tv-sign.ru\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "c93465181fed0f8f5942a41108943dadea0aa345", "tree": "a2c1a8fe514b97c31bd3832136894933c3f28fee", "parents": [ "28e53bddf814485699a4142bc056fd37d4e11dd4" ], "author": { "name": "Oleg Nesterov", "email": "oleg@tv-sign.ru", "time": "Wed May 09 02:34:23 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Wed May 09 12:30:53 2007 -0700" }, "message": "____call_usermodehelper: don\u0027t flush_signals()\n\n____call_usermodehelper() has no reason for flush_signals(). It is a fresh\nforked process which is going to exec a user-space application or exit on\nfailure.\n\nSigned-off-by: Oleg Nesterov \u003coleg@tv-sign.ru\u003e\nCc: Rusty Russell \u003crusty@rustcorp.com.au\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "28e53bddf814485699a4142bc056fd37d4e11dd4", "tree": "5182090c4cc2186eedbda3cb90ed82a2836f6ff6", "parents": [ "5830c5902138f80b0a097b797200c739466beedd" ], "author": { "name": "Oleg Nesterov", "email": "oleg@tv-sign.ru", "time": "Wed May 09 02:34:22 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Wed May 09 12:30:53 2007 -0700" }, "message": "unify flush_work/flush_work_keventd and rename it to cancel_work_sync\n\nflush_work(wq, work) doesn\u0027t need the first parameter, we can use cwq-\u003ewq\n(this was possible from the very beginnig, I missed this). So we can unify\nflush_work_keventd and flush_work.\n\nAlso, rename flush_work() to cancel_work_sync() and fix all callers.\nPerhaps this is not the best name, but \"flush_work\" is really bad.\n\n(akpm: this is why the earlier patches bypassed maintainers)\n\nSigned-off-by: Oleg Nesterov \u003coleg@tv-sign.ru\u003e\nCc: Jeff Garzik \u003cjeff@garzik.org\u003e\nCc: \"David S. Miller\" \u003cdavem@davemloft.net\u003e\nCc: Jens Axboe \u003cjens.axboe@oracle.com\u003e\nCc: Tejun Heo \u003chtejun@gmail.com\u003e\nCc: Auke Kok \u003cauke-jan.h.kok@intel.com\u003e,\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "a4798833d26b293fd18b7bf102991426aa0b56fd", "tree": "a564a45ee791e8418692c4171ed018dc90734238", "parents": [ "85f4186af944c1240c84934a9ab578743df2d69b" ], "author": { "name": "Oleg Nesterov", "email": "oleg@tv-sign.ru", "time": "Wed May 09 02:34:21 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Wed May 09 12:30:53 2007 -0700" }, "message": "zap_other_threads: remove unneeded -\u003eexit_signal change\n\nWe already depend on fact that all sub-threads have -\u003eexit_signal \u003d\u003d -1, no\nneed to set it in zap_other_threads().\n\nSigned-off-by: Oleg Nesterov \u003coleg@tv-sign.ru\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "85f4186af944c1240c84934a9ab578743df2d69b", "tree": "743d6a619538cda98495aaaac67a86246d3007e4", "parents": [ "b9aac8e0d32499217417ff0b494731811f185b18" ], "author": { "name": "Oleg Nesterov", "email": "oleg@tv-sign.ru", "time": "Wed May 09 02:34:20 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Wed May 09 12:30:53 2007 -0700" }, "message": "worker_thread: fix racy try_to_freeze() usage\n\nworker_thread() can miss freeze_process()-\u003esignal_wake_up() if it happens\nbetween try_to_freeze() and prepare_to_wait(). We should check freezing()\nbefore entering schedule().\n\nThis race was introduced by me in\n\n\t[PATCH 1/1] workqueue: don\u0027t migrate pending works from the dead CPU\n\nLooks like mm/vmscan.c:kswapd() has the same race.\n\nSigned-off-by: Oleg Nesterov \u003coleg@tv-sign.ru\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "b9aac8e0d32499217417ff0b494731811f185b18", "tree": "1cd79adb88431d3ebe6b9dd253b8ed1bbd4f9e07", "parents": [ "23b2e5991afde5af91a1a661d7f47ee56120759e" ], "author": { "name": "Oleg Nesterov", "email": "oleg@tv-sign.ru", "time": "Wed May 09 02:34:20 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Wed May 09 12:30:53 2007 -0700" }, "message": "worker_thread: don\u0027t play with signals\n\nworker_thread() doesn\u0027t need to \"Block and flush all signals\", this was\nalready done by its caller, kthread().\n\nSigned-off-by: Oleg Nesterov \u003coleg@tv-sign.ru\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "23b2e5991afde5af91a1a661d7f47ee56120759e", "tree": "d4b8e5bc1a311abd6b6de469f862a8b53c5f9f36", "parents": [ "c214b2cc5f9be7c236f9b91acf524688ff0e3e72" ], "author": { "name": "Oleg Nesterov", "email": "oleg@tv-sign.ru", "time": "Wed May 09 02:34:19 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Wed May 09 12:30:52 2007 -0700" }, "message": "workqueue: kill NOAUTOREL works\n\nWe don\u0027t have any users, and it is not so trivial to use NOAUTOREL works\ncorrectly. It is better to simplify API.\n\nDelete NOAUTOREL support and rename work_release to work_clear_pending to\navoid a confusion.\n\nSigned-off-by: Oleg Nesterov \u003coleg@tv-sign.ru\u003e\nAcked-by: David Howells \u003cdhowells@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": "1634c48f8b85dcb05101f1eb2eab9af40b5976da", "tree": "143aa0fbf21e712a5258806b37f2024ba432b522", "parents": [ "a848e3b67c07ed79374bd0f9b82f9ce45a419643" ], "author": { "name": "Oleg Nesterov", "email": "oleg@tv-sign.ru", "time": "Wed May 09 02:34:18 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Wed May 09 12:30:52 2007 -0700" }, "message": "make cancel_rearming_delayed_work() work on any workqueue, not just keventd_wq\n\ncancel_rearming_delayed_workqueue(wq, dwork) doesn\u0027t need the first\nparameter. We don\u0027t hang on un-queued dwork any longer, and work-\u003edata\ndoesn\u0027t change its type. This means we can always figure out \"wq\" from\ndwork when it is needed.\n\nRemove this parameter, and rename the function to\ncancel_rearming_delayed_work(). Re-create an inline \"obsolete\"\ncancel_rearming_delayed_workqueue(wq) which just calls\ncancel_rearming_delayed_work().\n\nSigned-off-by: Oleg Nesterov \u003coleg@tv-sign.ru\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "a848e3b67c07ed79374bd0f9b82f9ce45a419643", "tree": "72f4385e12310bf8e1b959d4d90d32f05c10cd61", "parents": [ "63bc0362521cbaae3ed17b8de7b094f9492453f0" ], "author": { "name": "Oleg Nesterov", "email": "oleg@tv-sign.ru", "time": "Wed May 09 02:34:17 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Wed May 09 12:30:52 2007 -0700" }, "message": "workqueue: introduce wq_per_cpu() helper\n\nCleanup. A number of per_cpu_ptr(wq-\u003ecpu_wq, cpu) users have to check that\ncpu is valid for this wq. Make a simple helper.\n\nSigned-off-by: Oleg Nesterov \u003coleg@tv-sign.ru\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "63bc0362521cbaae3ed17b8de7b094f9492453f0", "tree": "2a1bee6651fe00b76828cf75742bbff221188990", "parents": [ "ed7c0feede39d70092d048ec30f59bb1df69eec6" ], "author": { "name": "Oleg Nesterov", "email": "oleg@tv-sign.ru", "time": "Wed May 09 02:34:16 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Wed May 09 12:30:52 2007 -0700" }, "message": "unify queue_delayed_work() and queue_delayed_work_on()\n\nChange queue_delayed_work() to use queue_delayed_work_on() to avoid the code\nduplication (saves 133 bytes).\n\nQ: queue_delayed_work() enqueues \u0026dwork-\u003ework directly when delay \u003d\u003d 0, why?\n\n[jirislaby@gmail.com: oops fix]\nSigned-off-by: Oleg Nesterov \u003coleg@tv-sign.ru\u003e\nSigned-off-by: Jiri Slaby \u003cjirislaby@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": "ed7c0feede39d70092d048ec30f59bb1df69eec6", "tree": "67ff89df1a5db2037da34ddf17002b4c7ff218df", "parents": [ "06ba38a9a0f6ceffe70343f684c5a690e3710ef4" ], "author": { "name": "Oleg Nesterov", "email": "oleg@tv-sign.ru", "time": "Wed May 09 02:34:16 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Wed May 09 12:30:52 2007 -0700" }, "message": "make queue_delayed_work() friendly to flush_fork()\n\nCurrently typeof(delayed_work-\u003ework.data) is\n\n\t\"struct workqueue_struct\" when the timer is pending\n\n\t\"struct cpu_workqueue_struct\" whe the work is queued\n\nThis makes impossible to use flush_fork(delayed_work-\u003ework) in addition\nto cancel_delayed_work/cancel_rearming_delayed_work, not good.\n\nChange queue_delayed_work/delayed_work_timer_fn to use cwq, not wq. This\ncomplicates (and uglifies) these functions a little bit, but alows us to\nuse flush_fork(dwork) and imho makes the whole code more consistent.\n\nAlso, document the fact that cancel_rearming_delayed_work() doesn\u0027t garantee\nthe completion of work-\u003efunc() upon return.\n\nSigned-off-by: Oleg Nesterov \u003coleg@tv-sign.ru\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "06ba38a9a0f6ceffe70343f684c5a690e3710ef4", "tree": "500f4d8a3be212ececa80ead44d9658c8b7a4ce1", "parents": [ "c12920d19078eb8fd99560ec232a6e05c6ff1aa8" ], "author": { "name": "Oleg Nesterov", "email": "oleg@tv-sign.ru", "time": "Wed May 09 02:34:15 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Wed May 09 12:30:52 2007 -0700" }, "message": "workqueues: shift kthread_bind() from CPU_UP_PREPARE to CPU_ONLINE\n\nCPU_UP_PREPARE binds cwq-\u003ethread to the new CPU. So CPU_UP_CANCELED tries to\nwake up the task which is bound to the failed CPU.\n\nWith this patch we don\u0027t bind cwq-\u003ethread until CPU becomes online. The first\nwake_up() after kthread_create() is a bit special, make a simple helper for\nthat.\n\nSigned-off-by: Oleg Nesterov \u003coleg@tv-sign.ru\u003e\nCc: Gautham R Shenoy \u003cego@in.ibm.com\u003e\nCc: \"Rafael J. Wysocki\" \u003crjw@sisk.pl\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "c12920d19078eb8fd99560ec232a6e05c6ff1aa8", "tree": "614d7acbb8393bc3ae16d41c5a7f69a0abb4c9c1", "parents": [ "cce1a1656c9a3fdc6c6c1029b576e4ab6ecaac37" ], "author": { "name": "Oleg Nesterov", "email": "oleg@tv-sign.ru", "time": "Wed May 09 02:34:14 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Wed May 09 12:30:52 2007 -0700" }, "message": "workqueue: make init_workqueues() __init\n\nThe only caller of init_workqueues() is do_basic_setup().\n\nSigned-off-by: Oleg Nesterov \u003coleg@tv-sign.ru\u003e\nCc: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "cce1a1656c9a3fdc6c6c1029b576e4ab6ecaac37", "tree": "016a79e653156e32766f17bd801ffd0e4dd3a79f", "parents": [ "b1f4ec172f75bc2f5cc4f4be69b5587660a955d2" ], "author": { "name": "Oleg Nesterov", "email": "oleg@tv-sign.ru", "time": "Wed May 09 02:34:13 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Wed May 09 12:30:52 2007 -0700" }, "message": "workqueue: introduce workqueue_struct-\u003esinglethread\n\nAdd explicit workqueue_struct-\u003esinglethread flag. This lessens .text a\nlittle, but most importantly this allows us to manipulate wq-\u003elist without\nchangine the meaning of is_single_threaded().\n\nSigned-off-by: Oleg Nesterov \u003coleg@tv-sign.ru\u003e\nCc: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "b1f4ec172f75bc2f5cc4f4be69b5587660a955d2", "tree": "41a96f3996246d1f8667b9b84705a800f03d7c49", "parents": [ "dfb4b82e1c631b1a6057e77212996a890aa515b7" ], "author": { "name": "Oleg Nesterov", "email": "oleg@tv-sign.ru", "time": "Wed May 09 02:34:12 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Wed May 09 12:30:52 2007 -0700" }, "message": "workqueue: introduce cpu_singlethread_map\n\nThe code like\n\n\tif (is_single_threaded(wq))\n\t\tdo_something(singlethread_cpu);\n\telse {\n\t\tfor_each_cpu_mask(cpu, cpu_populated_map)\n\t\t\tdo_something(cpu);\n\t}\n\nlooks very annoying. We can add \"static cpumask_t cpu_singlethread_map\" and\nsimplify the code. Lessens .text a bit, and imho makes the code more readable.\n\nSigned-off-by: Oleg Nesterov \u003coleg@tv-sign.ru\u003e\nCc: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "dfb4b82e1c631b1a6057e77212996a890aa515b7", "tree": "9e2fcd9ff6bd990740b3f0a48fc4194f2e64d89f", "parents": [ "f293ea92007419e4f9c52db0cf57af17f45b9f94" ], "author": { "name": "Oleg Nesterov", "email": "oleg@tv-sign.ru", "time": "Wed May 09 02:34:11 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Wed May 09 12:30:52 2007 -0700" }, "message": "workqueue: make cancel_rearming_delayed_workqueue() work on idle dwork\n\ncancel_rearming_delayed_workqueue(dwork) will hang forever if dwork was not\nscheduled, because in that case cancel_delayed_work()-\u003edel_timer_sync() never\nreturns true.\n\nI don\u0027t know if there are any callers which may have problems, but this is not\nso convenient, and the fix is very simple.\n\nQ: looks like we don\u0027t need \"struct workqueue_struct *wq\" parameter. If the\ntimer was aborted successfully, get_wq_data() \u003d\u003d wq. Is it worth to add the\nnew function?\n\nSigned-off-by: Oleg Nesterov \u003coleg@tv-sign.ru\u003e\nCc: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "f293ea92007419e4f9c52db0cf57af17f45b9f94", "tree": "829d06499c1d9004ca530e5f23de43df27d3baa4", "parents": [ "7097a87afe937a5879528d52880c2d95f089e96c" ], "author": { "name": "Oleg Nesterov", "email": "oleg@tv-sign.ru", "time": "Wed May 09 02:34:10 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Wed May 09 12:30:52 2007 -0700" }, "message": "workqueue: don\u0027t save interrupts in run_workqueue()\n\nwork-\u003efunc() may sleep, it\u0027s a bug to call run_workqueue() with irqs disabled.\n\nSigned-off-by: Oleg Nesterov \u003coleg@tv-sign.ru\u003e\nCc: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "7097a87afe937a5879528d52880c2d95f089e96c", "tree": "f06090c0f6ed327ee2894deb8ac7c588ab55bf4e", "parents": [ "3af24433efac62f451bfdb1cf1edb7181fb73645" ], "author": { "name": "Oleg Nesterov", "email": "oleg@tv-sign.ru", "time": "Wed May 09 02:34:10 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Wed May 09 12:30:52 2007 -0700" }, "message": "workqueue: kill run_scheduled_work()\n\nBecause it has no callers.\n\nActually, I think the whole idea of run_scheduled_work() was not right, not\ngood to mix \"unqueue this work and execute its -\u003efunc()\" in one function.\n\nSigned-off-by: Oleg Nesterov \u003coleg@tv-sign.ru\u003e\nCc: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "3af24433efac62f451bfdb1cf1edb7181fb73645", "tree": "330353b50a88615ef6e99440e8412667ae0a855e", "parents": [ "36aa9dfc39bf473780439f5629c30f59d677e793" ], "author": { "name": "Oleg Nesterov", "email": "oleg@tv-sign.ru", "time": "Wed May 09 02:34:09 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Wed May 09 12:30:52 2007 -0700" }, "message": "workqueue: don\u0027t migrate pending works from the dead CPU\n\nCurrently CPU_DEAD uses kthread_stop() to stop cwq-\u003ethread and then\ntransfers cwq-\u003eworklist to another CPU. However, it is very unlikely that\nworker_thread() will notice kthread_should_stop() before flushing\ncwq-\u003eworklist. It is only possible if worker_thread() was preempted after\nrun_workqueue(cwq), a new work_struct was added, and CPU_DEAD happened\nbefore cwq-\u003ethread has a chance to run.\n\nThis means that take_over_work() mostly adds unneeded complications. Note\nalso that kthread_stop() is not good per se, wake_up_process() may confuse\nwork-\u003efunc() if it sleeps waiting for some event.\n\nRemove take_over_work() and migrate_sequence complications. CPU_DEAD sets\nthe cwq-\u003eshould_stop flag (introduced by this patch) and waits for\ncwq-\u003ethread to flush cwq-\u003eworklist and exit. Because the dead CPU is not\non cpu_online_map, no more works can be added to that cwq.\n\ncpu_populated_map was introduced to optimize for_each_possible_cpu(), it is\nnot strictly needed, and it is more a documentation in fact.\n\nSaves 418 bytes.\n\nSigned-off-by: Oleg Nesterov \u003coleg@tv-sign.ru\u003e\nCc: Srivatsa Vaddagiri \u003cvatsa@in.ibm.com\u003e\nCc: \"Pallipadi, Venkatesh\" \u003cvenkatesh.pallipadi@intel.com\u003e\nCc: Gautham shenoy \u003cego@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": "36aa9dfc39bf473780439f5629c30f59d677e793", "tree": "301d615747210733a271c376fc036a7480594207", "parents": [ "d721304dce0ced0b3b0366996cc02929669708a8" ], "author": { "name": "Oleg Nesterov", "email": "oleg@tv-sign.ru", "time": "Wed May 09 02:34:08 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Wed May 09 12:30:52 2007 -0700" }, "message": "workqueue: don\u0027t clear cwq-\u003ethread until it exits\n\nPointed out by Srivatsa Vaddagiri.\n\ncleanup_workqueue_thread() sets cwq-\u003ethread \u003d NULL and does kthread_stop().\nThis breaks the \"if (cwq-\u003ethread \u003d\u003d current)\" logic in flush_cpu_workqueue()\nand leads to deadlock.\n\nKill the thead first, then clear cwq-\u003ethread. workqueue_mutex protects us\nfrom create_workqueue_thread() so we don\u0027t need cwq-\u003elock.\n\nSigned-off-by: Oleg Nesterov \u003coleg@tv-sign.ru\u003e\nCc: Srivatsa Vaddagiri \u003cvatsa@in.ibm.com\u003e\nCc: \"Pallipadi, Venkatesh\" \u003cvenkatesh.pallipadi@intel.com\u003e\nCc: Gautham shenoy \u003cego@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": "d721304dce0ced0b3b0366996cc02929669708a8", "tree": "a7c41390d082e4d2c70b185e508368293cf68b92", "parents": [ "319c2a986eb45989690c955d9667b814ef0ed56f" ], "author": { "name": "Oleg Nesterov", "email": "oleg@tv-sign.ru", "time": "Wed May 09 02:34:07 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Wed May 09 12:30:52 2007 -0700" }, "message": "workqueue: fix flush_workqueue() vs CPU_DEAD race\n\nMany thanks to Srivatsa Vaddagiri for the helpful discussion and for spotting\nthe bug in my previous attempt.\n\nwork-\u003efunc() (and thus flush_workqueue()) must not use workqueue_mutex,\nthis leads to deadlock when CPU_DEAD does kthread_stop(). However without\nthis mutex held we can\u0027t detect CPU_DEAD in progress, which can move pending\nworks to another CPU while the dead one is not on cpu_online_map.\n\nChange flush_workqueue() to use for_each_possible_cpu(). This means that\nflush_cpu_workqueue() may hit CPU which is already dead. However in that\ncase\n\n\t!list_empty(\u0026cwq-\u003eworklist) || cwq-\u003ecurrent_work !\u003d NULL\n\nmeans that CPU_DEAD in progress, it will do kthread_stop() + take_over_work()\nso we can proceed and insert a barrier. We hold cwq-\u003elock, so we are safe.\n\nAlso, add migrate_sequence incremented by take_over_work() under cwq-\u003elock.\nIf take_over_work() happened before we checked this CPU, we should see the\nnew value after spin_unlock().\n\nFurther possible changes:\n\n\tremove CPU_DEAD handling (along with take_over_work, migrate_sequence)\n\tfrom workqueue.c. CPU_DEAD just sets cwq-\u003eplease_exit_after_flush flag.\n\n\tCPU_UP_PREPARE-\u003ecreate_workqueue_thread() clears this flag, and creates\n\tthe new thread if cwq-\u003ethread \u003d\u003d NULL.\n\nThis way the workqueue/cpu-hotplug interaction is almost zero, workqueue_mutex\njust protects \"workqueues\" list, CPU_LOCK_ACQUIRE/CPU_LOCK_RELEASE go away.\n\nSigned-off-by: Oleg Nesterov \u003coleg@tv-sign.ru\u003e\nCc: Srivatsa Vaddagiri \u003cvatsa@in.ibm.com\u003e\nCc: \"Pallipadi, Venkatesh\" \u003cvenkatesh.pallipadi@intel.com\u003e\nCc: Gautham shenoy \u003cego@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": "319c2a986eb45989690c955d9667b814ef0ed56f", "tree": "1408756a141247f703b2866886d9707006ab33a9", "parents": [ "38c3bd96a0a7d375e12f173c34fbebf9f153cb56" ], "author": { "name": "Oleg Nesterov", "email": "oleg@tv-sign.ru", "time": "Wed May 09 02:34:06 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Wed May 09 12:30:51 2007 -0700" }, "message": "workqueue: fix freezeable workqueues implementation\n\nCurrently -\u003efreezeable is per-cpu, this is wrong. CPU_UP_PREPARE creates\ncwq-\u003ethread which is not freezeable. Move -\u003efreezeable to workqueue_struct.\n\nSigned-off-by: Oleg Nesterov \u003coleg@tv-sign.ru\u003e\nCc: Srivatsa Vaddagiri \u003cvatsa@in.ibm.com\u003e\nCc: \"Pallipadi, Venkatesh\" \u003cvenkatesh.pallipadi@intel.com\u003e\nCc: Gautham shenoy \u003cego@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": "e7407dcc69e077ac34a527842db916abfbc458df", "tree": "138b24bceee828dc256bb81f2b592926be9f1515", "parents": [ "5be9361cdff17fc76fa0c3e262ead94158555f16" ], "author": { "name": "Heiko Carstens", "email": "heiko.carstens@de.ibm.com", "time": "Wed May 09 02:34:04 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Wed May 09 12:30:51 2007 -0700" }, "message": "call cpu_chain with CPU_DOWN_FAILED if CPU_DOWN_PREPARE failed\n\nThis makes cpu hotplug symmetrical: if CPU_UP_PREPARE fails we get\nCPU_UP_CANCELED, so we can undo what ever happened on PREPARE. The same\nshould happen for CPU_DOWN_PREPARE.\n\n[akpm@linux-foundation.org: fix for reduce-size-of-task_struct-on-64-bit-machines]\nCc: Srivatsa Vaddagiri \u003cvatsa@in.ibm.com\u003e\nCc: Gautham Shenoy \u003cego@in.ibm.com\u003e\nSigned-off-by: Heiko Carstens \u003cheiko.carstens@de.ibm.com\u003e\nCc: Oleg Nesterov \u003coleg@tv-sign.ru\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "5be9361cdff17fc76fa0c3e262ead94158555f16", "tree": "c0fd48bc0a39a2ba8a71677467f3d4e164b40f65", "parents": [ "baaca49f415b25fdbe2a8f3c22b39929e450fbfd" ], "author": { "name": "Gautham R Shenoy", "email": "ego@in.ibm.com", "time": "Wed May 09 02:34:04 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Wed May 09 12:30:51 2007 -0700" }, "message": "Eliminate lock_cpu_hotplug in kernel/schedc\n\nEliminate lock_cpu_hotplug from kernel/sched.c and use sched_hotcpu_mutex\ninstead to postpone a hotplug event.\n\nIn the migration_call hotcpu callback function, take sched_hotcpu_mutex\nwhile handling the event CPU_LOCK_ACQUIRE and release it while handling\nCPU_LOCK_RELEASE event.\n\n[akpm@linux-foundation.org: fix deadlock]\nSigned-off-by: Gautham R Shenoy \u003cego@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": "baaca49f415b25fdbe2a8f3c22b39929e450fbfd", "tree": "b152b4235fc07fe56619bd3a2e975e5ca90b8c5b", "parents": [ "6f7cc11aa6c7d5002e16096c7590944daece70ed" ], "author": { "name": "Gautham R Shenoy", "email": "ego@in.ibm.com", "time": "Wed May 09 02:34:03 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Wed May 09 12:30:51 2007 -0700" }, "message": "Define and use new events,CPU_LOCK_ACQUIRE and CPU_LOCK_RELEASE\n\nThis is an attempt to provide an alternate mechanism for postponing\na hotplug event instead of using a global mechanism like lock_cpu_hotplug.\n\nThe proposal is to add two new events namely CPU_LOCK_ACQUIRE and\nCPU_LOCK_RELEASE. The notification for these two events would be sent\nout before and after a cpu_hotplug event respectively.\n\nDuring the CPU_LOCK_ACQUIRE event, a cpu-hotplug-aware subsystem is\nsupposed to acquire any per-subsystem hotcpu mutex ( Eg. workqueue_mutex\nin kernel/workqueue.c ).\n\nDuring the CPU_LOCK_RELEASE release event the cpu-hotplug-aware subsystem\nis supposed to release the per-subsystem hotcpu mutex.\n\nThe reasons for defining new events as opposed to reusing the existing events\nlike CPU_UP_PREPARE/CPU_UP_FAILED/CPU_ONLINE for locking/unlocking of\nper-subsystem hotcpu mutexes are as follow:\n\n\t- CPU_LOCK_ACQUIRE: All hotcpu mutexes are taken before subsystems\n\tstart handling pre-hotplug events like CPU_UP_PREPARE/CPU_DOWN_PREPARE\n\tetc, thus ensuring a clean handling of these events.\n\n\t- CPU_LOCK_RELEASE: The hotcpu mutexes will be released only after\n\tall subsystems have handled post-hotplug events like CPU_DOWN_FAILED,\n\tCPU_DEAD,CPU_ONLINE etc thereby ensuring that there are no subsequent\n\tclashes amongst the interdependent subsystems after a cpu hotplugs.\n\nThis patch also uses __raw_notifier_call chain in _cpu_up to take care\nof the dependency between the two consequetive calls to\nraw_notifier_call_chain.\n\n[akpm@linux-foundation.org: fix a bug]\nSigned-off-by: Gautham R Shenoy \u003cego@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": "6f7cc11aa6c7d5002e16096c7590944daece70ed", "tree": "68a11e4b67189c44ac0f3ab579e52e134d479cf5", "parents": [ "7c9cb38302e78d24e37f7d8a2ea7eed4ae5f2fa7" ], "author": { "name": "Gautham R Shenoy", "email": "ego@in.ibm.com", "time": "Wed May 09 02:34:02 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Wed May 09 12:30:51 2007 -0700" }, "message": "Extend notifier_call_chain to count nr_calls made\n\nSince 2.6.18-something, the community has been bugged by the problem to\nprovide a clean and a stable mechanism to postpone a cpu-hotplug event as\nlock_cpu_hotplug was badly broken.\n\nThis is another proposal towards solving that problem. This one is along the\nlines of the solution provided in kernel/workqueue.c\n\nInstead of having a global mechanism like lock_cpu_hotplug, we allow the\nsubsytems to define their own per-subsystem hot cpu mutexes. These would be\ntaken(released) where ever we are currently calling\nlock_cpu_hotplug(unlock_cpu_hotplug).\n\nAlso, in the per-subsystem hotcpu callback function,we take this mutex before\nwe handle any pre-cpu-hotplug events and release it once we finish handling\nthe post-cpu-hotplug events. A standard means for doing this has been\nprovided in [PATCH 2/4] and demonstrated in [PATCH 3/4].\n\nThe ordering of these per-subsystem mutexes might still prove to be a\nproblem, but hopefully lockdep should help us get out of that muddle.\n\nThe patch set to be applied against linux-2.6.19-rc5 is as follows:\n\n[PATCH 1/4] :\tExtend notifier_call_chain with an option to specify the\n\t\tnumber of notifications to be sent and also count the\n\t\tnumber of notifications actually sent.\n\n[PATCH 2/4] :\tDefine events CPU_LOCK_ACQUIRE and CPU_LOCK_RELEASE\n\t\tand send out notifications for these in _cpu_up and\n\t\t_cpu_down. This would help us standardise the acquire and\n\t\trelease of the subsystem locks in the hotcpu\n\t\tcallback functions of these subsystems.\n\n[PATCH 3/4] :\tEliminate lock_cpu_hotplug from kernel/sched.c.\n\n[PATCH 4/4] :\tIn workqueue_cpu_callback function, acquire(release) the\n\t\tworkqueue_mutex while handling\n\t\tCPU_LOCK_ACQUIRE(CPU_LOCK_RELEASE).\n\nIf the per-subsystem-locking approach survives the test of time, we can expect\na slow phasing out of lock_cpu_hotplug, which has not yet been eliminated in\nthese patches :)\n\nThis patch:\n\nProvide notifier_call_chain with an option to call only a specified number of\nnotifiers and also record the number of call to notifiers made.\n\nThe need for this enhancement was identified in the post entitled\n\"Slab - Eliminate lock_cpu_hotplug from slab\"\n(http://lkml.org/lkml/2006/10/28/92) by Ravikiran G Thirumalai and\nAndrew Morton.\n\nThis patch adds two additional parameters to notifier_call_chain API namely\n - int nr_to_calls : Number of notifier_functions to be called.\n \t\t The don\u0027t care value is -1.\n\n - unsigned int *nr_calls : Records the total number of notifier_funtions\n\t\t\t called by notifier_call_chain. The don\u0027t care\n\t\t\t value is NULL.\n\n[michal.k.k.piotrowski@gmail.com: build fix]\nCredit: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Gautham R Shenoy \u003cego@in.ibm.com\u003e\nSigned-off-by: Michal Piotrowski \u003cmichal.k.k.piotrowski@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": "7c9cb38302e78d24e37f7d8a2ea7eed4ae5f2fa7", "tree": "b65be3c42762e85f3611fe5298d203f7f901da02", "parents": [ "d0758bc334780d70266c1d1b974ed26f740a0819" ], "author": { "name": "Tom Zanussi", "email": "zanussi@comcast.net", "time": "Wed May 09 02:34:01 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Wed May 09 12:30:51 2007 -0700" }, "message": "relay: use plain timer instead of delayed work\n\nrelay doesn\u0027t need to use schedule_delayed_work() for waking readers\nwhen a simple timer will do.\n\nSigned-off-by: Tom Zanussi \u003czanussi@comcast.net\u003e\nCc: Satyam Sharma \u003csatyam.sharma@gmail.com\u003e\nCc: Oleg Nesterov \u003coleg@tv-sign.ru\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "83c22520c51bf67529367e8237f95c03fe44e2da", "tree": "d9798e4f60551bdad0f7d8f1f1d5c69d7c4214c1", "parents": [ "edab2516a6c1752e8e5e3d55727cabf12346e5df" ], "author": { "name": "Oleg Nesterov", "email": "oleg@tv-sign.ru", "time": "Wed May 09 02:33:54 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Wed May 09 12:30:51 2007 -0700" }, "message": "flush_cpu_workqueue: don\u0027t flush an empty -\u003eworklist\n\nNow when we have -\u003ecurrent_work we can avoid adding a barrier and waiting\nfor its completition when cwq\u0027s queue is empty.\n\nNote: this change is also useful if we change flush_workqueue() to also\ncheck the dead CPUs.\n\nSigned-off-by: Oleg Nesterov \u003coleg@tv-sign.ru\u003e\nCc: Srivatsa Vaddagiri \u003cvatsa@in.ibm.com\u003e\nCc: Gautham Shenoy \u003cego@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": "edab2516a6c1752e8e5e3d55727cabf12346e5df", "tree": "235f0e8dd26341a650cc3329e4fc54b3b857aa07", "parents": [ "b89deed32ccc96098bd6bc953c64bba6b847774f" ], "author": { "name": "Andrew Morton", "email": "akpm@osdl.org", "time": "Wed May 09 02:33:53 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Wed May 09 12:30:51 2007 -0700" }, "message": "flush_workqueue(): use preempt_disable to hold off cpu hotplug\n\nCc: Oleg Nesterov \u003coleg@tv-sign.ru\u003e\nCc: Srivatsa Vaddagiri \u003cvatsa@in.ibm.com\u003e\nCc: Gautham Shenoy \u003cego@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": "b89deed32ccc96098bd6bc953c64bba6b847774f", "tree": "7a5963bbc5203cfdb39bf2fb1204764df39c71db", "parents": [ "fc2e4d70410546307344821eed6fd23803a45286" ], "author": { "name": "Oleg Nesterov", "email": "oleg@tv-sign.ru", "time": "Wed May 09 02:33:52 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Wed May 09 12:30:50 2007 -0700" }, "message": "implement flush_work()\n\nA basic problem with flush_scheduled_work() is that it blocks behind _all_\npresently-queued works, rather than just the work whcih the caller wants to\nflush. If the caller holds some lock, and if one of the queued work happens\nto want that lock as well then accidental deadlocks can occur.\n\nOne example of this is the phy layer: it wants to flush work while holding\nrtnl_lock(). But if a linkwatch event happens to be queued, the phy code will\ndeadlock because the linkwatch callback function takes rtnl_lock.\n\nSo we implement a new function which will flush a *single* work - just the one\nwhich the caller wants to free up. Thus we avoid the accidental deadlocks\nwhich can arise from unrelated subsystems\u0027 callbacks taking shared locks.\n\nflush_work() non-blockingly dequeues the work_struct which we want to kill,\nthen it waits for its handler to complete on all CPUs.\n\nAdd -\u003ecurrent_work to the \"struct cpu_workqueue_struct\", it points to\ncurrently running \"struct work_struct\". When flush_work(work) detects\n-\u003ecurrent_work \u003d\u003d work, it inserts a barrier at the _head_ of -\u003eworklist\n(and thus right _after_ that work) and waits for completition. This means\nthat the next work fired on that CPU will be this barrier, or another\nbarrier queued by concurrent flush_work(), so the caller of flush_work()\nwill be woken before any \"regular\" work has a chance to run.\n\nWhen wait_on_work() unlocks workqueue_mutex (or whatever we choose to protect\nagainst CPU hotplug), CPU may go away. But in that case take_over_work() will\nmove a barrier we queued to another CPU, it will be fired sometime, and\nwait_on_work() will be woken.\n\nActually, we are doing cleanup_workqueue_thread()-\u003ekthread_stop() before\ntake_over_work(), so cwq-\u003ethread should complete its -\u003eworklist (and thus\nthe barrier), because currently we don\u0027t check kthread_should_stop() in\nrun_workqueue(). But even if we did, everything should be ok.\n\n[akpm@osdl.org: cleanup]\n[akpm@osdl.org: add flush_work_keventd() wrapper]\nSigned-off-by: Oleg Nesterov \u003coleg@tv-sign.ru\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "fc2e4d70410546307344821eed6fd23803a45286", "tree": "b8253b7e42245c9b21b959a77c8070ddcbc9359e", "parents": [ "e18f3ffb9c3ddfc1b4ad8f38f5f2acae8c16f0c9" ], "author": { "name": "Oleg Nesterov", "email": "oleg@tv-sign.ru", "time": "Wed May 09 02:33:51 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Wed May 09 12:30:50 2007 -0700" }, "message": "reimplement flush_workqueue()\n\nRemove -\u003eremove_sequence, -\u003einsert_sequence, and -\u003ework_done from struct\ncpu_workqueue_struct. To implement flush_workqueue() we can queue a\nbarrier work on each CPU and wait for its completition.\n\nThe barrier is queued under workqueue_mutex to ensure that per cpu\nwq-\u003ecpu_wq is alive, we drop this mutex before going to sleep. If CPU goes\ndown while we are waiting for completition, take_over_work() will move the\nbarrier on another CPU, and the handler will wake up us eventually.\n\nSigned-off-by: Oleg Nesterov \u003coleg@tv-sign.ru\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "e18f3ffb9c3ddfc1b4ad8f38f5f2acae8c16f0c9", "tree": "6a1ccc7a10ccc25dd9b7e09fefa3db96e211e1ee", "parents": [ "a1e3cf418fc1e6b13bdc472ffb60bd02735e41a6" ], "author": { "name": "Andrew Morton", "email": "akpm@osdl.org", "time": "Wed May 09 02:33:50 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Wed May 09 12:30:50 2007 -0700" }, "message": "schedule_on_each_cpu(): use preempt_disable()\n\nWe take workqueue_mutex in there to keep CPU hotplug away. But\npreempt_disable() will suffice for that.\n\nCc: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "9b04bd27564cfd7224e0135ba37df778f1d490bf", "tree": "fd62f8c1fe7f17a9e92796412c1657b83ebe3965", "parents": [ "0366299bd2de283091f4394c0f446e58b5f94815" ], "author": { "name": "David Miller", "email": "davem@davemloft.net", "time": "Wed May 09 02:33:43 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Wed May 09 12:30:50 2007 -0700" }, "message": "Fix printk format warnings in timer_list.c\n\nu64 and s64 are not necessarily \u0027long long\u0027 on some 64-bit\nplatforms, so explicit the type to kill the compiler warnings.\n\nAlso consistently use \u0027%Lu\u0027 which is unsigned.\n\nSigned-off-by: David S. Miller \u003cdavem@davemloft.net\u003e\nCc: Thomas Gleixner \u003ctglx@linutronix.de\u003e\nCc: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "35c35d1afa8f9afe01d922ff9668a14c5d879b02", "tree": "5134d8447f5d25e8c8c32c7ed6f4cb0cd97c9da8", "parents": [ "18d8362d517cb2bd97761294924fe6c2a6ee5e3c" ], "author": { "name": "Daniel Walker", "email": "dwalker@mvista.com", "time": "Wed May 09 02:33:40 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Wed May 09 12:30:49 2007 -0700" }, "message": "clocksource: spelling error in watchdog code\n\nThere\u0027s more that need fixing, and fix my own subject spelling error too.\n\nSigned-off-by: Daniel Walker \u003cdwalker@mvista.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "55c0d1f83e481dd6c77f52f7dcfeb043b8b740fa", "tree": "5d3240d565c158712345094362d40c3973483a7f", "parents": [ "84963048ca8093e0aa71ac90c2a5fe7af5f617c3" ], "author": { "name": "Roland McGrath", "email": "roland@redhat.com", "time": "Wed May 09 02:33:37 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Wed May 09 12:30:49 2007 -0700" }, "message": "Move sig_kernel_* et al macros to linux/signal.h\n\nThis patch moves the sig_kernel_* and related macros from kernel/signal.c\nto linux/signal.h, and cleans them up slightly. I need the sig_kernel_*\nmacros for default signal behavior in the utrace code, and want to avoid\nduplication or overhead to share the knowledge.\n\nSigned-off-by: Roland McGrath \u003croland@redhat.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "85badbdf5120d246ce2bb3f1a7689a805f9c9006", "tree": "0c406f24c1533dc8dcaf322751b05e7b8bcd5d23", "parents": [ "92f4c701aad794de9e4cf7341d0a486aed027c46" ], "author": { "name": "Akinobu Mita", "email": "akinobu.mita@gmail.com", "time": "Wed May 09 02:33:33 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Wed May 09 12:30:49 2007 -0700" }, "message": "use simple_read_from_buffer in kernel/\n\nCleanup using simple_read_from_buffer() for /dev/cpuset/tasks and\n/proc/config.gz.\n\nCc: Paul Jackson \u003cpj@sgi.com\u003e\nCc: Randy Dunlap \u003crdunlap@xenotime.net\u003e\nSigned-off-by: Akinobu Mita \u003cakinobu.mita@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": "cb0c78cc94a63871cad051674516b38e4a8aef95", "tree": "2f90ad36bcfebf29caa3bc38cc5775e53ac58a54", "parents": [ "231f7e9d029a710c14352bff3b8d3753cb9bfde8" ], "author": { "name": "Jeff Dike", "email": "jdike@addtoit.com", "time": "Wed May 09 02:33:22 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Wed May 09 12:30:48 2007 -0700" }, "message": "Fix Linuxdoc comment\n\nA linuxdoc comment had fallen out of date - it refers to an argument which no\nlonger exists.\n\nSigned-off-by: Jeff Dike \u003cjdike@linux.intel.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "a3d25c275d383975504dc53c25b691df59bd3c48", "tree": "161a2ae12a20a630c2f639e144872db2b92eb098", "parents": [ "d60846c4d16f9518b098b905af2b87cb6bf6dc42" ], "author": { "name": "Rafael J. Wysocki", "email": "rjw@sisk.pl", "time": "Wed May 09 02:33:18 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Wed May 09 12:30:48 2007 -0700" }, "message": "PM: Separate hibernation code from suspend code\n\n[ With Johannes Berg \u003cjohannes@sipsolutions.net\u003e ]\n\nSeparate the hibernation (aka suspend to disk code) from the other suspend\ncode. In particular:\n\n * Remove the definitions related to hibernation from include/linux/pm.h\n * Introduce struct hibernation_ops and a new hibernate() function to hibernate\n the system, defined in include/linux/suspend.h\n * Separate suspend code in kernel/power/main.c from hibernation-related code\n in kernel/power/disk.c and kernel/power/user.c (with the help of\n hibernation_ops)\n * Switch ACPI (the only user of pm_ops.pm_disk_mode) to hibernation_ops\n\nSigned-off-by: Rafael J. Wysocki \u003crjw@sisk.pl\u003e\nCc: Greg KH \u003cgreg@kroah.com\u003e\nCc: Pavel Machek \u003cpavel@ucw.cz\u003e\nCc: Nigel Cunningham \u003cnigel@nigel.suspend2.net\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "d60846c4d16f9518b098b905af2b87cb6bf6dc42", "tree": "c8531fd981874f8a4e388079ca9edaf8ff27d63f", "parents": [ "ace4bd29c248b51db3f8a97e9b59740dc6caa074" ], "author": { "name": "Andrew Morton", "email": "akpm@linux-foundation.org", "time": "Wed May 09 02:33:17 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Wed May 09 12:30:48 2007 -0700" }, "message": "swsusp: clean up printk\n\nRemove an inexplicable /\n\nCc: \"Rafael J. Wysocki\" \u003crjw@sisk.pl\u003e\nCc: Pavel Machek \u003cpavel@ucw.cz\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "f42df9e658be10ca10d0d9b19a0e9d484694f04f", "tree": "a18ac720960721083c813d1f94e85d2ef1e7e612", "parents": [ "be2a608bd08ec00e19e14b322e07f443d2711084" ], "author": { "name": "John Anthony Kazos Jr", "email": "jakj@j-a-k-j.com", "time": "Wed May 09 08:23:08 2007 +0200" }, "committer": { "name": "Adrian Bunk", "email": "bunk@stusta.de", "time": "Wed May 09 08:58:20 2007 +0200" }, "message": "general: convert \"kernel\" subdirectory to UTF-8\n\nConvert the \"kernel\" subdirectory of the tree to UTF-8. The only file\nmodified is \u003ckernel/sys.c\u003e.\n\nSigned-off-by: John Anthony Kazos Jr. \u003cjakj@j-a-k-j.com\u003e\nSigned-off-by: Adrian Bunk \u003cbunk@stusta.de\u003e\n" }, { "commit": "59c51591a0ac7568824f541f57de967e88adaa07", "tree": "243d20eb0a26b76d5d312f39ec5a1ff60e036711", "parents": [ "02a3e59a088749c08b0293ee1535f5bf48f5926c" ], "author": { "name": "Michael Opdenacker", "email": "michael@free-electrons.com", "time": "Wed May 09 08:57:56 2007 +0200" }, "committer": { "name": "Adrian Bunk", "email": "bunk@stusta.de", "time": "Wed May 09 08:57:56 2007 +0200" }, "message": "Fix occurrences of \"the the \"\n\nSigned-off-by: Michael Opdenacker \u003cmichael@free-electrons.com\u003e\nSigned-off-by: Adrian Bunk \u003cbunk@stusta.de\u003e\n" }, { "commit": "940d67f6b95166475ff6e600ef7658e1cd441278", "tree": "390f7e30228ae2f22d0009831f80fb909df1e177", "parents": [ "de372ecd80a42c4fb485c7232475301a18d05184" ], "author": { "name": "Johannes Berg", "email": "johannes@sipsolutions.net", "time": "Tue May 08 19:23:49 2007 +1000" }, "committer": { "name": "Paul Mackerras", "email": "paulus@samba.org", "time": "Wed May 09 16:34:56 2007 +1000" }, "message": "[POWERPC] swsusp: Introduce register_nosave_region_late\n\nThis patch introduces a new register_nosave_region_late function that\ncan be called from initcalls when register_nosave_region can no longer\nbe used because it uses bootmem.\n\nSigned-off-by: Johannes Berg \u003cjohannes@sipsolutions.net\u003e\nAcked-by: Rafael J. Wysocki \u003crjw@sisk.pl\u003e\nSigned-off-by: Paul Mackerras \u003cpaulus@samba.org\u003e\n" }, { "commit": "02a3e59a088749c08b0293ee1535f5bf48f5926c", "tree": "9475c395c1c704f4da9d506b9a52ff8e4299463e", "parents": [ "b0e37650404b2302416ad3dbe649fdecba8d35d4" ], "author": { "name": "Robert P. J. Day", "email": "rpjday@mindspring.com", "time": "Wed May 09 07:26:28 2007 +0200" }, "committer": { "name": "Adrian Bunk", "email": "bunk@stusta.de", "time": "Wed May 09 07:26:28 2007 +0200" }, "message": "Fix minor typoes in kernel/module.c\n\nFix minor (comment) typoes in kernel/module.c.\n\nSigned-off-by: Robert P. J. Day \u003crpjday@mindspring.com\u003e\nSigned-off-by: Adrian Bunk \u003cbunk@stusta.de\u003e\n" }, { "commit": "3dde6ad8fc3939d345a3768464ecff43c91d511a", "tree": "bf36419973a724f854ba69de793daaf3d916f9a0", "parents": [ "ccf6780dc3d228f380e17b6858b93fc48e40afd4" ], "author": { "name": "David Sterba", "email": "dave@jikos.cz", "time": "Wed May 09 07:12:20 2007 +0200" }, "committer": { "name": "Adrian Bunk", "email": "bunk@stusta.de", "time": "Wed May 09 07:12:20 2007 +0200" }, "message": "Fix trivial typos in Kconfig* files\n\nFix several typos in help text in Kconfig* files.\n\nSigned-off-by: David Sterba \u003cdave@jikos.cz\u003e\nSigned-off-by: Adrian Bunk \u003cbunk@stusta.de\u003e\n" }, { "commit": "d5f9f942c601fdebe57f7805e4b4fbad9c28ada8", "tree": "6a212ceabd844fbaf517a13a9f885be5ab1c59b5", "parents": [ "da4e8ca376a1b3dca470eba14dcec321a6a27b8b" ], "author": { "name": "Andrew Morton", "email": "akpm@linux-foundation.org", "time": "Tue May 08 20:27:06 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue May 08 20:41:15 2007 -0700" }, "message": "revert \u0027sched: redundant reschedule when set_user_nice() boosts a prio of a task from the \"expired\" array\u0027\n\nRevert commit bd53f96ca54a21c07e7a0ae1886fa623d370b85f.\n\nCon says:\n\nThis is no good, sorry. The one I saw originally was with the staircase\ndeadline cpu scheduler in situ and was different.\n\n #define TASK_PREEMPTS_CURR(p, rq) \\\n ((p)-\u003eprio \u003c (rq)-\u003ecurr-\u003eprio)\n (((p)-\u003eprio \u003c (rq)-\u003ecurr-\u003eprio) \u0026\u0026 ((p)-\u003earray \u003d\u003d (rq)-\u003eactive))\n\nThis will fail to wake up a runqueue for a task that has been migrated to the\nexpired array of a runqueue which is otherwise idle which can happen with smp\nbalancing,\n\nCc: Dmitry Adamushko \u003cdmitry.adamushko@gmail.com\u003e\nCc: Con Kolivas \u003ckernel@kolivas.org\u003e\nCc: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "df6d3916f3b7b7e2067567a256dd4f0c1ea854a2", "tree": "0fdeab1ab5d566605fc99aeb5ea3f621f11e7608", "parents": [ "74add80cbd7fe246c893b93ee75ac59acdd01dd4", "197686dfe0038fd190326d118b743ff65ad20c0e" ], "author": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue May 08 11:50:19 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue May 08 11:50:19 2007 -0700" }, "message": "Merge branch \u0027master\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc\n\n* \u0027master\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc: (77 commits)\n [POWERPC] Abolish powerpc_flash_init()\n [POWERPC] Early serial debug support for PPC44x\n [POWERPC] Support for the Ebony 440GP reference board in arch/powerpc\n [POWERPC] Add device tree for Ebony\n [POWERPC] Add powerpc/platforms/44x, disable platforms/4xx for now\n [POWERPC] MPIC U3/U4 MSI backend\n [POWERPC] MPIC MSI allocator\n [POWERPC] Enable MSI mappings for MPIC\n [POWERPC] Tell Phyp we support MSI\n [POWERPC] RTAS MSI implementation\n [POWERPC] PowerPC MSI infrastructure\n [POWERPC] Rip out the existing powerpc msi stubs\n [POWERPC] Remove use of 4level-fixup.h for ppc32\n [POWERPC] Add powerpc PCI-E reset API implementation\n [POWERPC] Holly bootwrapper\n [POWERPC] Holly DTS\n [POWERPC] Holly defconfig\n [POWERPC] Add support for 750CL Holly board\n [POWERPC] Generalize tsi108 PCI setup\n [POWERPC] Generalize tsi108 PHY types\n ...\n\nFixed conflict in include/asm-powerpc/kdebug.h manually\n\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "d85a60d85ea5b7c597508c1510c88e657773d378", "tree": "2b5d1a5311074de8c12811e7ddf26e3cda4a41a0", "parents": [ "951744fea0aea9adbd7c8cacb3605f2d69a66f96" ], "author": { "name": "Bernhard Walle", "email": "bwalle@suse.de", "time": "Tue May 08 00:35:24 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue May 08 11:15:22 2007 -0700" }, "message": "Add IRQF_IRQPOLL flag (common code)\n\nirqpoll is broken on some architectures that don\u0027t use the IRQ 0 for the timer\ninterrupt like IA64. This patch adds a IRQF_IRQPOLL flag.\n\nEach architecture is handled in a separate pach. As I left the irq \u003d\u003d 0 as\ncondition, this should not break existing architectures that use timer_irq \u003d\u003d\n0 and that I did\u0027t address with that patch (because I don\u0027t know).\n\nThis patch:\n\nThis patch adds a IRQF_IRQPOLL flag that the interrupt registration code could\nuse for the interrupt it wants to use for IRQ polling.\n\nBecause this must not be the timer interrupt, an additional flag was added\ninstead of re-using the IRQF_TIMER constant. Until all architectures will\nhave an IRQF_IRQPOLL interrupt, irq \u003d\u003d 0 will stay as alternative as it should\nnot break anything.\n\nAlso, note_interrupt() is called on CPU-specific interrupts to be used as\ninterrupt source for IRQ polling.\n\nSigned-off-by: Bernhard Walle \u003cbwalle@suse.de\u003e\nCc: Russell King \u003crmk@arm.linux.org.uk\u003e\nCc: Kyle McMartin \u003ckyle@mcmartin.ca\u003e\nCc: Matthew Wilcox \u003cwilly@debian.org\u003e\nCc: Grant Grundler \u003cgrundler@google.com\u003e\nCc: Paul Mundt \u003clethal@linux-sh.org\u003e\nCc: \"Luck, Tony\" \u003ctony.luck@intel.com\u003e\nCc: Ingo Molnar \u003cmingo@elte.hu\u003e\nCc: Thomas Gleixner \u003ctglx@linutronix.de\u003e\nCc: Alan Cox \u003calan@lxorguk.ukuu.org.uk\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "bf8f6e5b3e51ee0c64c2d1350c70198ddc8ad3f7", "tree": "c48ebb92f836cfac58465eacc9658fbc2bac4783", "parents": [ "4c4308cb93450989846ac49faeb6dab943e7657e" ], "author": { "name": "Ananth N Mavinakayanahalli", "email": "ananth@in.ibm.com", "time": "Tue May 08 00:34:16 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue May 08 11:15:19 2007 -0700" }, "message": "Kprobes: The ON/OFF knob thru debugfs\n\nThis patch provides a debugfs knob to turn kprobes on/off\n\no A new file /debug/kprobes/enabled indicates if kprobes is enabled or\n not (default enabled)\no Echoing 0 to this file will disarm all installed probes\no Any new probe registration when disabled will register the probe but\n not arm it. A message will be printed out in such a case.\no When a value 1 is echoed to the file, all probes (including ones\n registered in the intervening period) will be enabled\no Unregistration will happen irrespective of whether probes are globally\n enabled or not.\no Update Documentation/kprobes.txt to reflect these changes. While there\n also update the doc to make it current.\n\nWe are also looking at providing sysrq key support to tie to the disabling\nfeature provided by this patch.\n\n[akpm@linux-foundation.org: Use bool like a bool!]\n[akpm@linux-foundation.org: add printk facility levels]\n[cornelia.huck@de.ibm.com: Add the missing arch_trampoline_kprobe() for s390]\nSigned-off-by: Ananth N Mavinakayanahalli \u003cananth@in.ibm.com\u003e\nSigned-off-by: Srinivasa DS \u003csrinivasa@in.ibm.com\u003e\nSigned-off-by: Cornelia Huck \u003ccornelia.huck@de.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": "4c4308cb93450989846ac49faeb6dab943e7657e", "tree": "c06092cae6f95a243cdd758d07491cf5fa24a1dd", "parents": [ "6f716acd5fa20ae6a35ab29ae37fa9189e839ed5" ], "author": { "name": "Christoph Hellwig", "email": "hch@lst.de", "time": "Tue May 08 00:34:14 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue May 08 11:15:19 2007 -0700" }, "message": "kprobes: kretprobes simplifications\n\n - consolidate duplicate code in all arch_prepare_kretprobe instances\n into common code\n - replace various odd helpers that use hlist_for_each_entry to get\n the first elemenet of a list with either a hlist_for_each_entry_save\n or an opencoded access to the first element in the caller\n - inline add_rp_inst into it\u0027s only remaining caller\n - use kretprobe_inst_table_head instead of opencoding it\n\nSigned-off-by: Christoph Hellwig \u003chch@lst.de\u003e\nCc: Prasanna S Panchamukhi \u003cprasanna@in.ibm.com\u003e\nAcked-by: Ananth N Mavinakayanahalli \u003cananth@in.ibm.com\u003e\nCc: Anil S Keshavamurthy \u003canil.s.keshavamurthy@intel.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "6f716acd5fa20ae6a35ab29ae37fa9189e839ed5", "tree": "abefdcd4a24de1879d1bafcf4c827d10db561bc8", "parents": [ "b0bb501651b467096723dcfcf4565d910a2aadf8" ], "author": { "name": "Christoph Hellwig", "email": "hch@lst.de", "time": "Tue May 08 00:34:13 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue May 08 11:15:19 2007 -0700" }, "message": "kprobes: codingstyle cleanups\n\nRemove superflous braces and fix indentation aswell as comments.\n\nSigned-off-by: Christoph Hellwig \u003chch@lst.de\u003e\nCc: Prasanna S Panchamukhi \u003cprasanna@in.ibm.com\u003e\nCc: Ananth N Mavinakayanahalli \u003cananth@in.ibm.com\u003e\nCc: Anil S Keshavamurthy \u003canil.s.keshavamurthy@intel.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "b0bb501651b467096723dcfcf4565d910a2aadf8", "tree": "ed7a6fef07dc5a942f04d403dbe0466301688306", "parents": [ "41ac8df9d5b731a4dd8f1f4e5a9de6ef8768383d" ], "author": { "name": "Christoph Hellwig", "email": "hch@lst.de", "time": "Tue May 08 00:34:11 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue May 08 11:15:19 2007 -0700" }, "message": "kprobes: use hlist_for_each_entry\n\nSigned-off-by: Christoph Hellwig \u003chch@lst.de\u003e\nCc: Prasanna S Panchamukhi \u003cprasanna@in.ibm.com\u003e\nCc: Ananth N Mavinakayanahalli \u003cananth@in.ibm.com\u003e\nCc: Anil S Keshavamurthy \u003canil.s.keshavamurthy@intel.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "ade5fb818fb1861fd5f84619c761920ade762b5d", "tree": "e82613433ced07fea20f974586919b11864e2bbc", "parents": [ "c8e5b163101c5d716f08e90b686da620baa022f1" ], "author": { "name": "Josh Triplett", "email": "josh@kernel.org", "time": "Tue May 08 00:33:22 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue May 08 11:15:17 2007 -0700" }, "message": "rcutorture: Remove redundant assignment to cur_ops in for loop\n\nThe for loop in rcutorture_init uses the condition\ncur_ops \u003d torture_ops[i], cur_ops\nbut then makes the same assignment to cur_ops inside the loop. Remove the\nredundant assignment inside the loop, and remove now-unnecessary braces.\n\nSigned-off-by: Josh Triplett \u003cjosh@kernel.org\u003e\nCc: \"Paul E. McKenney\" \u003cpaulmck@us.ibm.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "c8e5b163101c5d716f08e90b686da620baa022f1", "tree": "a159b2452edd86187663fc603139ceb9b9f58d61", "parents": [ "788e770eb2d17212eafaeedde0be56e3444c6b9a" ], "author": { "name": "Josh Triplett", "email": "josh@kernel.org", "time": "Tue May 08 00:33:20 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue May 08 11:15:17 2007 -0700" }, "message": "rcutorture: style cleanup: avoid !\u003d NULL in boolean tests\n\nSigned-off-by: Josh Triplett \u003cjosh@kernel.org\u003e\nCc: \"Paul E. McKenney\" \u003cpaulmck@us.ibm.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "788e770eb2d17212eafaeedde0be56e3444c6b9a", "tree": "0833022390feec63302918b454a8ac97c9786e45", "parents": [ "c3396620cace20639bdf380f893f4dccad090d91" ], "author": { "name": "Ahmed S. Darwish", "email": "darwish.07@gmail.com", "time": "Tue May 08 00:33:14 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue May 08 11:15:17 2007 -0700" }, "message": "rcutorture: Use ARRAY_SIZE macro when appropriate\n\nUse ARRAY_SIZE macro already defined in kernel.h\n\nSigned-off-by: Ahmed S. Darwish \u003cdarwish.07@gmail.com\u003e\nCc: \"Paul E. McKenney\" \u003cpaulmck@us.ibm.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "c3396620cace20639bdf380f893f4dccad090d91", "tree": "90e4a76b014809e4773eb4393f64d92791ecaba5", "parents": [ "bd53f96ca54a21c07e7a0ae1886fa623d370b85f" ], "author": { "name": "Siddha, Suresh B", "email": "suresh.b.siddha@intel.com", "time": "Tue May 08 00:33:09 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue May 08 11:15:17 2007 -0700" }, "message": "sched: align rq to cacheline boundary\n\nAlign the per cpu runqueue to the cacheline boundary. This will minimize\nthe number of cachelines touched during remote wakeup.\n\nSigned-off-by: Suresh Siddha \u003csuresh.b.siddha@intel.com\u003e\nAcked-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nCc: Ravikiran G Thirumalai \u003ckiran@scalex86.org\u003e\nCc: Nick Piggin \u003cnickpiggin@yahoo.com.au\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "bd53f96ca54a21c07e7a0ae1886fa623d370b85f", "tree": "c908772406a055fcaa8a8742a36f61014a99b20a", "parents": [ "4953198b6ce07b008b0f1c2edd41c9d027a118b4" ], "author": { "name": "Dmitry Adamushko", "email": "dmitry.adamushko@gmail.com", "time": "Tue May 08 00:33:06 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue May 08 11:15:17 2007 -0700" }, "message": "sched: redundant reschedule when set_user_nice() boosts a prio of a task from the \"expired\" array\n\n- Make TASK_PREEMPTS_CURR(task, rq) return \"true\" only if the task\u0027s prio\n is higher than the current\u0027s one and the task is in the \"active\" array.\n This ensures we don\u0027t make redundant resched_task() calls when the task\n is in the \"expired\" array (as may happen now in set_user_prio(),\n rt_mutex_setprio() and pull_task() ) ;\n\n- generalise conditions for a call to resched_task() in set_user_nice(),\n rt_mutex_setprio() and sched_setscheduler()\n\nSigned-off-by: Dmitry Adamushko \u003cdmitry.adamushko@gmail.com\u003e\nCc: Con Kolivas \u003ckernel@kolivas.org\u003e\nAcked-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "4953198b6ce07b008b0f1c2edd41c9d027a118b4", "tree": "dc0f500aae58c84ee7d422ac11990956ecbf9673", "parents": [ "5517d86bea237c1d7078840182d9ebc0fe4c1afc" ], "author": { "name": "Siddha, Suresh B", "email": "suresh.b.siddha@intel.com", "time": "Tue May 08 00:33:01 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue May 08 11:15:17 2007 -0700" }, "message": "sched: optimize siblings status check logic in wake_idle()\n\nWhen a logical cpu \u0027x\u0027 already has more than one process running, then most\nlikely the siblings of that cpu \u0027x\u0027 must be busy. Otherwise the idle\nsiblings would have likely(in most of the scenarios) picked up the extra\nload making the load on \u0027x\u0027 atmost one.\n\nUse this logic to eliminate the siblings status check and minimize the cache\nmisses encountered on a heavily loaded system.\n\nSigned-off-by: Suresh Siddha \u003csuresh.b.siddha@intel.com\u003e\nCc: Nick Piggin \u003cnickpiggin@yahoo.com.au\u003e\nAcked-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "5517d86bea237c1d7078840182d9ebc0fe4c1afc", "tree": "67f1999895313878bfa904c66dffb7066f3c8d91", "parents": [ "46cb4b7c88fa5517f64b5bee42939ea3614cddcb" ], "author": { "name": "Eric Dumazet", "email": "dada1@cosmosbay.com", "time": "Tue May 08 00:32:57 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue May 08 11:15:17 2007 -0700" }, "message": "Speed up divides by cpu_power in scheduler\n\nI noticed expensive divides done in try_to_wakeup() and\nfind_busiest_group() on a bi dual core Opteron machine (total of 4 cores),\nmoderatly loaded (15.000 context switch per second)\n\noprofile numbers :\n\nCPU: AMD64 processors, speed 2600.05 MHz (estimated)\nCounted CPU_CLK_UNHALTED events (Cycles outside of halt state) with a unit\nmask of 0x00 (No unit mask) count 50000\nsamples % symbol name\n...\n613914 1.0498 try_to_wake_up\n 834 0.0013 :ffffffff80227ae1: div %rcx\n77513 0.1191 :ffffffff80227ae4: mov %rax,%r11\n\n608893 1.0413 find_busiest_group\n 1841 0.0031 :ffffffff802260bf: div %rdi\n140109 0.2394 :ffffffff802260c2: test %sil,%sil\n\nSome of these divides can use the reciprocal divides we introduced some\ntime ago (currently used in slab AFAIK)\n\nWe can assume a load will fit in a 32bits number, because with a\nSCHED_LOAD_SCALE\u003d128 value, its still a theorical limit of 33554432\n\nWhen/if we reach this limit one day, probably cpus will have a fast\nhardware divide and we can zap the reciprocal divide trick.\n\nIngo suggested to rename cpu_power to __cpu_power to make clear it should\nnot be modified without changing its reciprocal value too.\n\nI did not convert the divide in cpu_avg_load_per_task(), because tracking\nnr_running changes may be not worth it ? We could use a static table of 32\nreciprocal values but it would add a conditional branch and table lookup.\n\n[akpm@linux-foundation.org: !SMP build fix]\nSigned-off-by: Eric Dumazet \u003cdada1@cosmosbay.com\u003e\nAcked-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "46cb4b7c88fa5517f64b5bee42939ea3614cddcb", "tree": "429b8092394974ae787bf0cfaefe5c7b6a1da782", "parents": [ "bdecea3a9282d529b54954f3f1e59877629baba1" ], "author": { "name": "Siddha, Suresh B", "email": "suresh.b.siddha@intel.com", "time": "Tue May 08 00:32:51 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue May 08 11:15:17 2007 -0700" }, "message": "sched: dynticks idle load balancing\n\nFix the process idle load balancing in the presence of dynticks. cpus for\nwhich ticks are stopped will sleep till the next event wakes it up.\nPotentially these sleeps can be for large durations and during which today,\nthere is no periodic idle load balancing being done.\n\nThis patch nominates an owner among the idle cpus, which does the idle load\nbalancing on behalf of the other idle cpus. And once all the cpus are\ncompletely idle, then we can stop this idle load balancing too. Checks added\nin fast path are minimized. Whenever there are busy cpus in the system, there\nwill be an owner(idle cpu) doing the system wide idle load balancing.\n\nOpen items:\n1. Intelligent owner selection (like an idle core in a busy package).\n2. Merge with rcu\u0027s nohz_cpu_mask?\n\nSigned-off-by: Suresh Siddha \u003csuresh.b.siddha@intel.com\u003e\nAcked-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nCc: Thomas Gleixner \u003ctglx@linutronix.de\u003e\nCc: Nick Piggin \u003cnickpiggin@yahoo.com.au\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "bdecea3a9282d529b54954f3f1e59877629baba1", "tree": "c7330b1cec4b4a9bf18657bc99100276343efc38", "parents": [ "2bd7e20e0d24325b0799544bc8105cc57cc8e2aa" ], "author": { "name": "Siddha, Suresh B", "email": "suresh.b.siddha@intel.com", "time": "Tue May 08 00:32:48 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue May 08 11:15:17 2007 -0700" }, "message": "sched: fix idle load balancing in softirqd context\n\nPeriodic load balancing in recent kernels happen in the softirq. In\ncertain -rt configurations, these softirqs are handled in softirqd context.\n And hence the check for idle processor was always returning busy (as\nnr_running \u003e 1).\n\nThis patch captures the idle information at the tick and passes this info\nto softirq context through an element \u0027idle_at_tick\u0027 in rq.\n\n[kernel@kolivas.org: Fix reverse idle at tick logic]\nSigned-off-by: Suresh Siddha \u003csuresh.b.siddha@intel.com\u003e\nAcked-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nCc: Thomas Gleixner \u003ctglx@linutronix.de\u003e\nCc: Nick Piggin \u003cnickpiggin@yahoo.com.au\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "6bdb6b620e335d38ced8d5981e8f44778225c1d8", "tree": "ef0b4ae38124f2d727bcefb3d60388f4c1e03437", "parents": [ "b140f25108a8b11aa4903014814988549838b324" ], "author": { "name": "Stas Sergeev", "email": "stsp@aknet.ru", "time": "Tue May 08 00:31:58 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue May 08 11:15:15 2007 -0700" }, "message": "export hrtimer_forward\n\nOther symbols of the hrtimers API are already exported.\n\nSigned-off-by: Stas Sergeev \u003cstsp@aknet.ru\u003e\nAcked-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\nCc: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "6f7f02e78a75a09195d963e0392b195bc2d55c5c", "tree": "a0ead177a4faaafdfa400ff9de3c992603e42f4d", "parents": [ "0c28f287aa57e065116731c1e44bedcbc14fd53f" ], "author": { "name": "David Rientjes", "email": "rientjes@google.com", "time": "Tue May 08 00:31:43 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue May 08 11:15:14 2007 -0700" }, "message": "cpusets: allow empty {cpus,mems}_allowed to be set for unpopulated cpuset\n\nYou currently cannot remove all cpus or mems from cpus_allowed or\nmems_allowed of a cpuset. We now allow both if there are no attached\ntasks.\n\nAcked-by: Paul Jackson \u003cpj@sgi.com\u003e\nCc: Christoph Lameter \u003cclameter@engr.sgi.com\u003e\nSigned-off-by: Paul Menage \u003cmenage@google.com\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": "4ff773bbde87f7f7dddc0f579ad53e077a6587b9", "tree": "701116c151d6a78764034462d9fcfb45ba311a7a", "parents": [ "0bb5e19d63cc1b09aed8aef3a20926ac435bb8e7" ], "author": { "name": "Jarek Poplawski", "email": "jarkao2@o2.pl", "time": "Tue May 08 00:31:00 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue May 08 11:15:13 2007 -0700" }, "message": "lockdep: removed unused ip argument in mark_lock \u0026 mark_held_locks\n\nIt looks like a remainder from designing...\n\nSigned-off-by: Jarek Poplawski \u003cjarkao@o2.pl\u003e\nCc: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "35bab756b49bd148760a3bbd3c907cd74754dbb4", "tree": "8572b353c595a026931fe04e4bc20d1e50516e3f", "parents": [ "b3561ea9462b33a0bf824b4ca19a1ae84db81210" ], "author": { "name": "Adrian Bunk", "email": "bunk@stusta.de", "time": "Tue May 08 00:30:49 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue May 08 11:15:13 2007 -0700" }, "message": "The scheduled -EINVAL for invalid timevals in setitimer\n\nAs scheduled, do_setitimer() now returns -EINVAL for invalid timeval.\n\nSigned-off-by: Adrian Bunk \u003cbunk@stusta.de\u003e\nAcked-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\nCc: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "9926e4c74300c4b31dee007298c6475d33369df0", "tree": "c2251d7f6a19874de8388b4271d6b2b9836cae38", "parents": [ "a4bb27d99ca2986e30180a0eb143865051b909db" ], "author": { "name": "Tom Alsberg", "email": "alsbergt@cs.huji.ac.il", "time": "Tue May 08 00:30:31 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue May 08 11:15:12 2007 -0700" }, "message": "CPU time limit patch / setrlimit(RLIMIT_CPU, 0) cheat fix\n\nAs discovered here today, the change in Kernel 2.6.17 intended to inhibit\nusers from setting RLIMIT_CPU to 0 (as that is equivalent to unlimited) by\n\"cheating\" and setting it to 1 in such a case, does not make a difference,\nas the check is done in the wrong place (too late), and only applies to the\nprofiling code.\n\nOn all systems I checked running kernels above 2.6.17, no matter what the\nhard and soft CPU time limits were before, a user could escape them by\nissuing in the shell (sh/bash/zsh) \"ulimit -t 0\", and then the user\u0027s\nprocess was not ever killed.\n\nAttached is a trivial patch to fix that. Simply moving the check to a\nslightly earlier location (specifically, before the line that actually\nassigns the limit - *old_rlim \u003d new_rlim), does the trick.\n\nDo note that at least the zsh (but not ash, dash, or bash) shell has the\nproblem of \"caching\" the limits set by the ulimit command, so when running\nzsh the fix will not immediately be evident - after entering \"ulimit -t 0\",\n\"ulimit -a\" will show \"-t: cpu time (seconds) 0\", even though the actual\nlimit as returned by getrlimit(...) will be 1. It can be verified by\nopening a subshell (which will not have the values of the parent shell in\ncache) and checking in it, or just by running a CPU intensive command like\n\"echo \u002765536^1048576\u0027 | bc\" and verifying that it dumps core after one\nsecond.\n\nRegardless of whether that is a misfeature in the shell, perhaps it would\nbe better to return -EINVAL from setrlimit in such a case instead of\ncheating and setting to 1, as that does not really reflect the actual state\nof the process anymore. I do not however know what the ground for that\ndecision was in the original 2.6.17 change, and whether there would be any\n\"backward\" compatibility issues, so I preferred not to touch that right\nnow.\n\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "b5e618181a927210f8be1d3d2249d31904ba358d", "tree": "731f1ae4ff1ba56d402bb329182b7d935bb439a1", "parents": [ "db9c02fa8bd50eb104781a9f78cae923d8da1e74" ], "author": { "name": "Pavel Emelianov", "email": "xemul@sw.ru", "time": "Tue May 08 00:30:19 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue May 08 11:15:11 2007 -0700" }, "message": "Introduce a handy list_first_entry macro\n\nThere are many places in the kernel where the construction like\n\n foo \u003d list_entry(head-\u003enext, struct foo_struct, list);\n\nare used.\nThe code might look more descriptive and neat if using the macro\n\n list_first_entry(head, type, member) \\\n list_entry((head)-\u003enext, type, member)\n\nHere is the macro itself and the examples of its usage in the generic code.\n If it will turn out to be useful, I can prepare the set of patches to\ninject in into arch-specific code, drivers, networking, etc.\n\nSigned-off-by: Pavel Emelianov \u003cxemul@openvz.org\u003e\nSigned-off-by: Kirill Korotaev \u003cdev@openvz.org\u003e\nCc: Randy Dunlap \u003crandy.dunlap@oracle.com\u003e\nCc: Andi Kleen \u003candi@firstfloor.org\u003e\nCc: Zach Brown \u003czach.brown@oracle.com\u003e\nCc: Davide Libenzi \u003cdavidel@xmailserver.org\u003e\nCc: John McCutchan \u003cttb@tentacle.dhs.org\u003e\nCc: Thomas Gleixner \u003ctglx@linutronix.de\u003e\nCc: Ingo Molnar \u003cmingo@elte.hu\u003e\nCc: john stultz \u003cjohnstul@us.ibm.com\u003e\nCc: Ram Pai \u003clinuxram@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": "9e860d000a90cfc9ca270ddb6e99b177e6aa91cd", "tree": "9a7ab3e8c007f01cf9603a71a3842d68e4cbf41d", "parents": [ "076fa0fa2d53046d32f5157022d683b8027f05ed" ], "author": { "name": "Jarek Poplawski", "email": "jarkao2@o2.pl", "time": "Tue May 08 00:30:12 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue May 08 11:15:11 2007 -0700" }, "message": "lockdep: lookup_chain_cache comment errata\n\nSigned-off-by: Jarek Poplawski \u003cjarkao2@o2.pl\u003e\nAcked-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "d3ed782458f315c30ea679b919a2cc59f2b82565", "tree": "b87fffc87acf5632566a6384f5c8be8f5c2e03b2", "parents": [ "d5d3b736e3264934ec832a657a9a434b65f3d51f" ], "author": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Tue May 08 00:30:03 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue May 08 11:15:10 2007 -0700" }, "message": "highres/dyntick: prevent xtime lock contention\n\nWhile the !highres/!dyntick code assigns the duty of the do_timer() call to\none specific CPU, this was dropped in the highres/dyntick part during\ndevelopment.\n\nSteven Rostedt discovered the xtime lock contention on highres/dyntick due\nto several CPUs trying to update jiffies.\n\nAdd the single CPU assignement back. In the dyntick case this needs to be\nhandled carefully, as the CPU which has the do_timer() duty must drop the\nassignement and let it be grabbed by another CPU, which is active.\nOtherwise the do_timer() calls would not happen during the long sleep.\n\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\nAcked-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nCc: Steven Rostedt \u003crostedt@goodmis.org\u003e\nAcked-by: Mark Lord \u003cmlord@pobox.com\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": "5a0c6a0d1ae97473291f479ef64573d6b2c0e2d5", "tree": "39f3d1716c2136da8c53c220b0ea21d93695693a", "parents": [ "6272e2667965dfb5b59199f462cd0f001fb304a6" ], "author": { "name": "Martin Peschke", "email": "mp3@de.ibm.com", "time": "Tue May 08 00:29:25 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue May 08 11:15:09 2007 -0700" }, "message": "kallsyms: cleanup: use seq_release_private() where appropriate\n\nWe can save some lines of code by using seq_release_private().\n\nSigned-off-by: Martin Peschke \u003cmp3@de.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": "039b6b3ed84e45a6f8316358dd2bfdc83d59fc45", "tree": "7d64edaeb2a67808742988dea3cccacecc1b17b8", "parents": [ "b2bbe383ef7e792e92a5f53be955e71bd253ab32" ], "author": { "name": "Robert P. J. Day", "email": "rpjday@mindspring.com", "time": "Tue May 08 00:29:20 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue May 08 11:15:09 2007 -0700" }, "message": "audit: add spaces on either side of case \"...\" operator.\n\nFollowing the programming advice laid down in the gcc manual, make\nsure the case \"...\" operator has spaces on either side.\n\nAccording to:\n\nhttp://gcc.gnu.org/onlinedocs/gcc-4.1.2/gcc/Case-Ranges.html#Case-Ranges:\n\n \"Be careful: Write spaces around the ..., for otherwise it may be\nparsed wrong when you use it with integer values.\"\n\nSigned-off-by: Robert P. J. Day \u003crpjday@mindspring.com\u003e\nCc: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "e729aa16b168fb202d1a20f936028cb7c2a0278d", "tree": "d0267225ebfadbaa4f55f55c3025597d86ff1c5f", "parents": [ "428e6ce023c5890cfecc8ad10335da3f28dbf893" ], "author": { "name": "Ravikiran G Thirumalai", "email": "kiran@scalex86.org", "time": "Tue May 08 00:29:13 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue May 08 11:15:09 2007 -0700" }, "message": "Pad irq_desc to internode cacheline size\n\nWe noticed a drop in n/w performance due to the irq_desc being cacheline\naligned rather than internode aligned. We see 50% of expected performance\nwhen two e1000 nics local to two different nodes have consecutive irq\ndescriptors allocated, due to false sharing.\n\nNote that this patch does away with cacheline padding for the UP case, as\nit does not seem useful for UP configurations.\n\nSigned-off-by: Ravikiran Thirumalai \u003ckiran@scalex86.org\u003e\nSigned-off-by: Shai Fultheim \u003cshai@scalex86.org\u003e\nCc: \"Siddha, Suresh B\" \u003csuresh.b.siddha@intel.com\u003e\nCc: Ingo Molnar \u003cmingo@elte.hu\u003e\nCc: Thomas Gleixner \u003ctglx@linutronix.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "428e6ce023c5890cfecc8ad10335da3f28dbf893", "tree": "17c746035cf727bc5494b9116ae6034724aaede3", "parents": [ "644fd4f5de9ca147daeb6dc5f844b44ec3d58b47" ], "author": { "name": "Pavel Emelianov", "email": "xemul@sw.ru", "time": "Tue May 08 00:29:10 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue May 08 11:15:09 2007 -0700" }, "message": "Lockdep treats down_write_trylock like regular down_write\n\nThis causes constructions like\n\ndown_write(\u0026mm1-\u003emmap_sem);\nif (down_write_trylock(\u0026mm2-\u003emmap_sem)) {\n ...\n up_write(\u0026mm2-\u003emmap_sem);\n}\nup_write(\u0026mm1-\u003emmap_sem);\n\ngenerate a lockdep warning about circular locking dependence.\n\nCall rwsem_acquire() with trylock set to 1.\n\nCc: Ingo Molnar \u003cmingo@elte.hu\u003e\nCc: Arjan van de Ven \u003carjan@infradead.org\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": "9730b5b06fee7ffd1f0150855f03cf319c0e004f", "tree": "a27dcf664e467b5b1fbc6a4139091fb8f04a45dc", "parents": [ "a5c43dae7ae38c2a6b3e9a819bcf45f010bf6a4a" ], "author": { "name": "Bert Wesarg", "email": "wesarg@informatik.uni-halle.de", "time": "Tue May 08 00:28:50 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue May 08 11:15:08 2007 -0700" }, "message": "kernel/params.c: fix lying comment for param_array()\n\nThis fixes the comment for the function param_array. Which lies that it\nonly *temporarily* mangle the input string @val.\n\nSigned-off-by: Bert Wesarg \u003cwesarg@informatik.uni-halle.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "a5c43dae7ae38c2a6b3e9a819bcf45f010bf6a4a", "tree": "b30da7a4541e803e35a6a74ad33e836442c3f6c8", "parents": [ "9d65cb4a1718a072898c7a57a3bc61b2dc4bcd4d" ], "author": { "name": "Alexey Dobriyan", "email": "adobriyan@sw.ru", "time": "Tue May 08 00:28:47 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue May 08 11:15:08 2007 -0700" }, "message": "Fix race between cat /proc/slab_allocators and rmmod\n\nSame story as with cat /proc/*/wchan race vs rmmod race, only\n/proc/slab_allocators want more info than just symbol name.\n\nSigned-off-by: Alexey Dobriyan \u003cadobriyan@sw.ru\u003e\nAcked-by: Rusty Russell \u003crusty@rustcorp.com.au\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "9d65cb4a1718a072898c7a57a3bc61b2dc4bcd4d", "tree": "9e3fd1c9e61e8ed16959d115a9a3f6f7eb0bbf21", "parents": [ "ffb45122766db220d0bf3d01848d575fbbcb6430" ], "author": { "name": "Alexey Dobriyan", "email": "adobriyan@sw.ru", "time": "Tue May 08 00:28:43 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue May 08 11:15:08 2007 -0700" }, "message": "Fix race between cat /proc/*/wchan and rmmod et al\n\nkallsyms_lookup() can go iterating over modules list unprotected which is OK\nfor emergency situations (oops), but not OK for regular stuff like\n/proc/*/wchan.\n\nIntroduce lookup_symbol_name()/lookup_module_symbol_name() which copy symbol\nname into caller-supplied buffer or return -ERANGE. All copying is done with\nmodule_mutex held, so...\n\nSigned-off-by: Alexey Dobriyan \u003cadobriyan@sw.ru\u003e\nCc: Rusty Russell \u003crusty@rustcorp.com.au\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "ffb45122766db220d0bf3d01848d575fbbcb6430", "tree": "a8fedf0518407ad12578a7c03aa2c3344f11ff3c", "parents": [ "ea07890a680273b25127129fb555aac0d9324bea" ], "author": { "name": "Alexey Dobriyan", "email": "adobriyan@sw.ru", "time": "Tue May 08 00:28:41 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue May 08 11:15:08 2007 -0700" }, "message": "Simplify kallsyms_lookup()\n\nSeveral kallsyms_lookup() pass dummy arguments but only need, say, module\u0027s\nname. Make kallsyms_lookup() accept NULLs where possible.\n\nAlso, makes picture clearer about what interfaces are needed for all symbol\nresolving business.\n\nSigned-off-by: Alexey Dobriyan \u003cadobriyan@sw.ru\u003e\nCc: Rusty Russell \u003crusty@rustcorp.com.au\u003e\nAcked-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "ea07890a680273b25127129fb555aac0d9324bea", "tree": "b0742aa5dd90792dc10be3563c1181582d0f5d9e", "parents": [ "ae84e324709d6320ed8c1fd7b1736fcbaf26df95" ], "author": { "name": "Alexey Dobriyan", "email": "adobriyan@sw.ru", "time": "Tue May 08 00:28:39 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue May 08 11:15:08 2007 -0700" }, "message": "Fix race between rmmod and cat /proc/kallsyms\n\nmodule_get_kallsym() leaks \"struct module *\" outside of module_mutex which is\nno-no, because module can dissapear right after mutex unlock.\n\nCopy all needed information from inside module_mutex into caller-supplied\nspace.\n\n[bunk@stusta.de: is_exported() can now become static]\nSigned-off-by: Alexey Dobriyan \u003cadobriyan@sw.ru\u003e\nCc: Rusty Russell \u003crusty@rustcorp.com.au\u003e\nSigned-off-by: Adrian Bunk \u003cbunk@stusta.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "ae84e324709d6320ed8c1fd7b1736fcbaf26df95", "tree": "bb3b623f2fd491771c716957622a72e86e9582dd", "parents": [ "55955aad7c09e4d93029d0cf2d360b41891f2fe4" ], "author": { "name": "Alexey Dobriyan", "email": "adobriyan@sw.ru", "time": "Tue May 08 00:28:38 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue May 08 11:15:08 2007 -0700" }, "message": "Simplify module_get_kallsym() by dropping length arg\n\nmodule_get_kallsym() could in theory truncate module symbol name to fit in\nbuffer, but nobody does this. Always use KSYM_NAME_LEN + 1 bytes for name.\n\nSuggested by lg^WRusty.\n\nSigned-off-by: Alexey Dobriyan \u003cadobriyan@sw.ru\u003e\nAcked-by: Rusty Russell \u003crusty@rustcorp.com.au\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "b73a7e76c1eeaa770a41554698917c3c45686a07", "tree": "70c9016ca24bc06d1781ace007ce557bbe3d3cf8", "parents": [ "6672f76a5a1878d42264c1deba8f1ab52b4618d9" ], "author": { "name": "Jan Engelhardt", "email": "jengelh@linux01.gwdg.de", "time": "Tue May 08 00:28:24 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue May 08 11:15:07 2007 -0700" }, "message": "Fix kevent\u0027s childs priority greediness\n\nFix kevent\u0027s childs priority greediness. Such tasks were always scheduled\nat nice level -5 and, at that time, udev stole us the CPU time with -5.\n\nAlready posted at http://lkml.org/lkml/2005/1/10/85\n\n[akpm@linux-foundation.org: add comment]\nSigned-off-by: Jan Engelhardt \u003cjengelh@gmx.de\u003e\nCc: Chris Wright \u003cchrisw@sous-sol.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "6672f76a5a1878d42264c1deba8f1ab52b4618d9", "tree": "77396eefed3548183c1f0c3d1dc38f034d8fc429", "parents": [ "73285082745045bcd64333c1fbaa88f8490f2626" ], "author": { "name": "Simon Horman", "email": "horms@verge.net.au", "time": "Tue May 08 00:28:22 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue May 08 11:15:07 2007 -0700" }, "message": "kdump/kexec: calculate note size at compile time\n\nCurrently the size of the per-cpu region reserved to save crash notes is\nset by the per-architecture value MAX_NOTE_BYTES. Which in turn is\ncurrently set to 1024 on all supported architectures.\n\nWhile testing ia64 I recently discovered that this value is in fact too\nsmall. The particular setup I was using actually needs 1172 bytes. This\nlead to very tedious failure mode where the tail of one elf note would\noverwrite the head of another if they ended up being alocated sequentially\nby kmalloc, which was often the case.\n\nIt seems to me that a far better approach is to caclculate the size that\nthe area needs to be. This patch does just that.\n\nIf a simpler stop-gap patch for ia64 to be squeezed into 2.6.21(.X) is\nneeded then this should be as easy as making MAX_NOTE_BYTES larger in\narch/asm-ia64/kexec.h. Perhaps 2048 would be a good choice. However, I\nthink that the approach in this patch is a much more robust idea.\n\nAcked-by: Vivek Goyal \u003cvgoyal@in.ibm.com\u003e\nSigned-off-by: Simon Horman \u003chorms@verge.net.au\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" } ], "next": "e63340ae6b6205fef26b40a75673d1c9c0c8bb90" }