)]}' { "log": [ { "commit": "231367fd9bccbb36309ab5bf5012e11a84231031", "tree": "31c9282fd2c4f17ec8f7d22bb975ba84e081a22a", "parents": [ "6e86841d05f371b5b9b86ce76c02aaee83352298" ], "author": { "name": "Adrian Bunk", "email": "bunk@kernel.org", "time": "Tue Jul 22 20:21:16 2008 +0300" }, "committer": { "name": "Pekka Enberg", "email": "penberg@cs.helsinki.fi", "time": "Tue Jul 29 23:44:26 2008 +0300" }, "message": "mm: unexport ksize\n\nThis patch removes the obsolete and no longer used exports of ksize.\n\nSigned-off-by: Adrian Bunk \u003cbunk@kernel.org\u003e\nSigned-off-by: Pekka Enberg \u003cpenberg@cs.helsinki.fi\u003e\n" }, { "commit": "51cc50685a4275c6a02653670af9f108a64e01cf", "tree": "819d47bd2b0c8a9d1835d863853804b0a0242b97", "parents": [ "d91958815d214ea365b98cbff6215383897edcb6" ], "author": { "name": "Alexey Dobriyan", "email": "adobriyan@gmail.com", "time": "Fri Jul 25 19:45:34 2008 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Sat Jul 26 12:00:07 2008 -0700" }, "message": "SL*B: drop kmem cache argument from constructor\n\nKmem cache passed to constructor is only needed for constructors that are\nthemselves multiplexeres. Nobody uses this \"feature\", nor does anybody uses\npassed kmem cache in non-trivial way, so pass only pointer to object.\n\nNon-trivial places are:\n\tarch/powerpc/mm/init_64.c\n\tarch/powerpc/mm/hugetlbpage.c\n\nThis is flag day, yes.\n\nSigned-off-by: Alexey Dobriyan \u003cadobriyan@gmail.com\u003e\nAcked-by: Pekka Enberg \u003cpenberg@cs.helsinki.fi\u003e\nAcked-by: Christoph Lameter \u003ccl@linux-foundation.org\u003e\nCc: Jon Tollefson \u003ckniht@linux.vnet.ibm.com\u003e\nCc: Nick Piggin \u003cnickpiggin@yahoo.com.au\u003e\nCc: Matt Mackall \u003cmpm@selenic.com\u003e\n[akpm@linux-foundation.org: fix arch/powerpc/mm/hugetlbpage.c]\n[akpm@linux-foundation.org: fix mm/slab.c]\n[akpm@linux-foundation.org: fix ubifs]\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "1a781a777b2f6ac46523fe92396215762ced624d", "tree": "4f34bb4aade85c0eb364b53d664ec7f6ab959006", "parents": [ "b9d2252c1e44fa83a4e65fdc9eb93db6297c55af", "42a2f217a5e324ed5f2373ab1b7a0a15187c4d6c" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Tue Jul 15 21:55:59 2008 +0200" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Tue Jul 15 21:55:59 2008 +0200" }, "message": "Merge branch \u0027generic-ipi\u0027 into generic-ipi-for-linus\n\nConflicts:\n\n\tarch/powerpc/Kconfig\n\tarch/s390/kernel/time.c\n\tarch/x86/kernel/apic_32.c\n\tarch/x86/kernel/cpu/perfctr-watchdog.c\n\tarch/x86/kernel/i8259_64.c\n\tarch/x86/kernel/ldt.c\n\tarch/x86/kernel/nmi_64.c\n\tarch/x86/kernel/smpboot.c\n\tarch/x86/xen/smp.c\n\tinclude/asm-x86/hw_irq_32.h\n\tinclude/asm-x86/hw_irq_64.h\n\tinclude/asm-x86/mach-default/irq_vectors.h\n\tinclude/asm-x86/mach-voyager/irq_vectors.h\n\tinclude/asm-x86/smp.h\n\tkernel/Makefile\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "e79aec291da55aa322ddb5d8f3bb04cdf69470d5", "tree": "aa49571cf5cb7a085dd8bdb9c88ad13e5a1250f7", "parents": [ "88e4ccf294ca62c2da998012a83533ce150c8dce" ], "author": { "name": "Rabin Vincent", "email": "rabin@rab.in", "time": "Fri Jul 04 00:40:32 2008 +0530" }, "committer": { "name": "Pekka Enberg", "email": "penberg@cs.helsinki.fi", "time": "Tue Jul 15 20:36:02 2008 +0300" }, "message": "slab: rename slab_destroy_objs\n\nWith the removal of destructors, slab_destroy_objs no longer actually\ndestroys any objects, making the kernel doc incorrect and the function\nname misleading.\n\nIn keeping with the other debug functions, rename it to\nslab_destroy_debugcheck and drop the kernel doc.\n\nSigned-off-by: Rabin Vincent \u003crabin@rab.in\u003e\nSigned-off-by: Pekka Enberg \u003cpenberg@cs.helsinki.fi\u003e\n" }, { "commit": "15c8b6c1aaaf1c4edd67e2f02e4d8e1bd1a51c0d", "tree": "3658f893c2f89ea0be4c6cc08aa11fa54476d0f4", "parents": [ "8691e5a8f691cc2a4fda0651e8d307aaba0e7d68" ], "author": { "name": "Jens Axboe", "email": "jens.axboe@oracle.com", "time": "Fri May 09 09:39:44 2008 +0200" }, "committer": { "name": "Jens Axboe", "email": "jens.axboe@oracle.com", "time": "Thu Jun 26 11:24:38 2008 +0200" }, "message": "on_each_cpu(): kill unused \u0027retry\u0027 parameter\n\nIt\u0027s not even passed on to smp_call_function() anymore, since that\nwas removed. So kill it.\n\nAcked-by: Jeremy Fitzhardinge \u003cjeremy.fitzhardinge@citrix.com\u003e\nReviewed-by: Paul E. McKenney \u003cpaulmck@linux.vnet.ibm.com\u003e\nSigned-off-by: Jens Axboe \u003cjens.axboe@oracle.com\u003e\n" }, { "commit": "481c5346d0981940ee63037eb53e4e37b0735c10", "tree": "3fcae626ec4e1d4e698008671cfd62d794992ac5", "parents": [ "62a8efe632be1815b544845db643f1fcd9afcfb0" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Sat Jun 21 16:46:35 2008 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Sat Jun 21 16:51:02 2008 -0700" }, "message": "Slab: Fix memory leak in fallback_alloc()\n\nThe zonelist patches caused the loop that checks for available\nobjects in permitted zones to not terminate immediately. One object\nper zone per allocation may be allocated and then abandoned.\n\nBreak the loop when we have successfully allocated one object.\n\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "d40cee245ff6ad05d3448401d7320be82c1c5af1", "tree": "5467cada898e80d5e43592393b21252312c908fa", "parents": [ "d7853d1f8932c847a8d7b3b38e6baedf77148cfb" ], "author": { "name": "Harvey Harrison", "email": "harvey.harrison@gmail.com", "time": "Wed Apr 30 00:55:07 2008 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Wed Apr 30 08:29:53 2008 -0700" }, "message": "mm: remove remaining __FUNCTION__ occurrences\n\n__FUNCTION__ is gcc-specific, use __func__\n\nSigned-off-by: Harvey Harrison \u003charvey.harrison@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": "3ac7fe5a4aab409bd5674d0b070bce97f9d20872", "tree": "5e12e8864bb8737695e4eb9c63970602d5f69e73", "parents": [ "30327acf7846c5eb97c8e31c78317a2918d3e515" ], "author": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Wed Apr 30 00:55:01 2008 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Wed Apr 30 08:29:53 2008 -0700" }, "message": "infrastructure to debug (dynamic) objects\n\nWe can see an ever repeating problem pattern with objects of any kind in the\nkernel:\n\n1) freeing of active objects\n2) reinitialization of active objects\n\nBoth problems can be hard to debug because the crash happens at a point where\nwe have no chance to decode the root cause anymore. One problem spot are\nkernel timers, where the detection of the problem often happens in interrupt\ncontext and usually causes the machine to panic.\n\nWhile working on a timer related bug report I had to hack specialized code\ninto the timer subsystem to get a reasonable hint for the root cause. This\ndebug hack was fine for temporary use, but far from a mergeable solution due\nto the intrusiveness into the timer code.\n\nThe code further lacked the ability to detect and report the root cause\ninstantly and keep the system operational.\n\nKeeping the system operational is important to get hold of the debug\ninformation without special debugging aids like serial consoles and special\nknowledge of the bug reporter.\n\nThe problems described above are not restricted to timers, but timers tend to\nexpose it usually in a full system crash. Other objects are less explosive,\nbut the symptoms caused by such mistakes can be even harder to debug.\n\nInstead of creating specialized debugging code for the timer subsystem a\ngeneric infrastructure is created which allows developers to verify their code\nand provides an easy to enable debug facility for users in case of trouble.\n\nThe debugobjects core code keeps track of operations on static and dynamic\nobjects by inserting them into a hashed list and sanity checking them on\nobject operations and provides additional checks whenever kernel memory is\nfreed.\n\nThe tracked object operations are:\n- initializing an object\n- adding an object to a subsystem list\n- deleting an object from a subsystem list\n\nEach operation is sanity checked before the operation is executed and the\nsubsystem specific code can provide a fixup function which allows to prevent\nthe damage of the operation. When the sanity check triggers a warning message\nand a stack trace is printed.\n\nThe list of operations can be extended if the need arises. For now it\u0027s\nlimited to the requirements of the first user (timers).\n\nThe core code enqueues the objects into hash buckets. The hash index is\ngenerated from the address of the object to simplify the lookup for the check\non kfree/vfree. Each bucket has it\u0027s own spinlock to avoid contention on a\nglobal lock.\n\nThe debug code can be compiled in without being active. The runtime overhead\nis minimal and could be optimized by asm alternatives. A kernel command line\noption enables the debugging code.\n\nThanks to Ingo Molnar for review, suggestions and cleanup patches.\n\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nCc: Greg KH \u003cgreg@kroah.com\u003e\nCc: Randy Dunlap \u003crandy.dunlap@oracle.com\u003e\nCc: Kay Sievers \u003ckay.sievers@vrfy.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "1b27d05b6e21249d2338be26dfcbe8f8d8ff8a5b", "tree": "c5413d5f64efed1aa84bfa0ab718f1e2a2f6f9cb", "parents": [ "19fc3f0acde32636529969570055c7e2a744787c" ], "author": { "name": "Pekka Enberg", "email": "penberg@cs.helsinki.fi", "time": "Mon Apr 28 02:12:22 2008 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Mon Apr 28 08:58:19 2008 -0700" }, "message": "mm: move cache_line_size() to \u003clinux/cache.h\u003e\n\nNot all architectures define cache_line_size() so as suggested by Andrew move\nthe private implementations in mm/slab.c and mm/slob.c to \u003clinux/cache.h\u003e.\n\nCc: Thomas Gleixner \u003ctglx@linutronix.de\u003e\nCc: Ingo Molnar \u003cmingo@redhat.com\u003e\nCc: H. Peter Anvin \u003chpa@zytor.com\u003e\nReviewed-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nSigned-off-by: Pekka Enberg \u003cpenberg@cs.helsinki.fi\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "dd1a239f6f2d4d3eedd318583ec319aa145b324c", "tree": "aff4224c96b5e2e67588c3946858a724863eeaf9", "parents": [ "54a6eb5c4765aa573a030ceeba2c14e3d2ea5706" ], "author": { "name": "Mel Gorman", "email": "mel@csn.ul.ie", "time": "Mon Apr 28 02:12:17 2008 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Mon Apr 28 08:58:18 2008 -0700" }, "message": "mm: have zonelist contains structs with both a zone pointer and zone_idx\n\nFiltering zonelists requires very frequent use of zone_idx(). This is costly\nas it involves a lookup of another structure and a substraction operation. As\nthe zone_idx is often required, it should be quickly accessible. The node idx\ncould also be stored here if it was found that accessing zone-\u003enode is\nsignificant which may be the case on workloads where nodemasks are heavily\nused.\n\nThis patch introduces a struct zoneref to store a zone pointer and a zone\nindex. The zonelist then consists of an array of these struct zonerefs which\nare looked up as necessary. Helpers are given for accessing the zone index as\nwell as the node index.\n\n[kamezawa.hiroyu@jp.fujitsu.com: Suggested struct zoneref instead of embedding information in pointers]\n[hugh@veritas.com: mm-have-zonelist: fix memcg ooms]\n[hugh@veritas.com: just return do_try_to_free_pages]\n[hugh@veritas.com: do_try_to_free_pages gfp_mask redundant]\nSigned-off-by: Mel Gorman \u003cmel@csn.ul.ie\u003e\nAcked-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nAcked-by: David Rientjes \u003crientjes@google.com\u003e\nSigned-off-by: Lee Schermerhorn \u003clee.schermerhorn@hp.com\u003e\nCc: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nCc: Mel Gorman \u003cmel@csn.ul.ie\u003e\nCc: Christoph Lameter \u003cclameter@sgi.com\u003e\nCc: Nick Piggin \u003cnickpiggin@yahoo.com.au\u003e\nSigned-off-by: Hugh Dickins \u003chugh@veritas.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "54a6eb5c4765aa573a030ceeba2c14e3d2ea5706", "tree": "547176a090beb787722a153cf2b8b942dc0e68db", "parents": [ "18ea7e710d2452fa726814a406779188028cf1bf" ], "author": { "name": "Mel Gorman", "email": "mel@csn.ul.ie", "time": "Mon Apr 28 02:12:16 2008 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Mon Apr 28 08:58:18 2008 -0700" }, "message": "mm: use two zonelist that are filtered by GFP mask\n\nCurrently a node has two sets of zonelists, one for each zone type in the\nsystem and a second set for GFP_THISNODE allocations. Based on the zones\nallowed by a gfp mask, one of these zonelists is selected. All of these\nzonelists consume memory and occupy cache lines.\n\nThis patch replaces the multiple zonelists per-node with two zonelists. The\nfirst contains all populated zones in the system, ordered by distance, for\nfallback allocations when the target/preferred node has no free pages. The\nsecond contains all populated zones in the node suitable for GFP_THISNODE\nallocations.\n\nAn iterator macro is introduced called for_each_zone_zonelist() that interates\nthrough each zone allowed by the GFP flags in the selected zonelist.\n\nSigned-off-by: Mel Gorman \u003cmel@csn.ul.ie\u003e\nAcked-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nSigned-off-by: Lee Schermerhorn \u003clee.schermerhorn@hp.com\u003e\nCc: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nCc: Mel Gorman \u003cmel@csn.ul.ie\u003e\nCc: Christoph Lameter \u003cclameter@sgi.com\u003e\nCc: Hugh Dickins \u003chugh@veritas.com\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": "0e88460da6ab7bb6a7ef83675412ed5b6315d741", "tree": "1feb4de2362e4998a0deeab66af1efb9c7b8bb34", "parents": [ "dac1d27bc8d5ca636d3014ecfdf94407031d1970" ], "author": { "name": "Mel Gorman", "email": "mel@csn.ul.ie", "time": "Mon Apr 28 02:12:14 2008 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Mon Apr 28 08:58:18 2008 -0700" }, "message": "mm: introduce node_zonelist() for accessing the zonelist for a GFP mask\n\nIntroduce a node_zonelist() helper function. It is used to lookup the\nappropriate zonelist given a node and a GFP mask. The patch on its own is a\ncleanup but it helps clarify parts of the two-zonelist-per-node patchset. If\nnecessary, it can be merged with the next patch in this set without problems.\n\nReviewed-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nSigned-off-by: Mel Gorman \u003cmel@csn.ul.ie\u003e\nSigned-off-by: Lee Schermerhorn \u003clee.schermerhorn@hp.com\u003e\nCc: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nCc: Mel Gorman \u003cmel@csn.ul.ie\u003e\nCc: Christoph Lameter \u003cclameter@sgi.com\u003e\nCc: Hugh Dickins \u003chugh@veritas.com\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": "c5f59f0833df945eef7ff35f3dc6ba61c5f293dd", "tree": "32c1a94847d0154051c79011212d401462723d55", "parents": [ "b53e921ba1cff8453dc9a87a84052fa12d5b30bd" ], "author": { "name": "Mike Travis", "email": "travis@sgi.com", "time": "Fri Apr 04 18:11:10 2008 -0700" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Sat Apr 19 19:44:59 2008 +0200" }, "message": "nodemask: use new node_to_cpumask_ptr function\n\n * Use new node_to_cpumask_ptr. This creates a pointer to the\n cpumask for a given node. This definition is in mm patch:\n\n\tasm-generic-add-node_to_cpumask_ptr-macro.patch\n\n * Use new set_cpus_allowed_ptr function.\n\nDepends on:\n\t[mm-patch]: asm-generic-add-node_to_cpumask_ptr-macro.patch\n\t[sched-devel]: sched: add new set_cpus_allowed_ptr function\n\t[x86/latest]: x86: add cpus_scnprintf function\n\nCc: Greg Kroah-Hartman \u003cgregkh@suse.de\u003e\nCc: Greg Banks \u003cgnb@melbourne.sgi.com\u003e\nCc: H. Peter Anvin \u003chpa@zytor.com\u003e\nSigned-off-by: Mike Travis \u003ctravis@sgi.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "ec1f5eeeb5a79a0d48036de649a3498da42db565", "tree": "29b34d9aae8b61633e8ad549864d97cc474ec6b2", "parents": [ "53625b4204753b904addd40ca96d9ba802e6977d" ], "author": { "name": "Daniel Yeisley", "email": "dan.yeisley@unisys.com", "time": "Tue Mar 25 23:59:08 2008 +0200" }, "committer": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Wed Mar 26 10:44:17 2008 -0700" }, "message": "slab: fix cache_cache bootstrap in kmem_cache_init()\n\nCommit 556a169dab38b5100df6f4a45b655dddd3db94c1 (\"slab: fix bootstrap on\nmemoryless node\") introduced bootstrap-time cache_cache list3s for all nodes\nbut forgot that initkmem_list3 needs to be accessed by [somevalue + node]. This\npatch fixes list_add() corruption in mm/slab.c seen on the ES7000.\n\nCc: Mel Gorman \u003cmel@csn.ul.ie\u003e\nCc: Olaf Hering \u003colaf@aepfle.de\u003e\nCc: Christoph Lameter \u003cclameter@sgi.com\u003e\nSigned-off-by: Dan Yeisley \u003cdan.yeisley@unisys.com\u003e\nSigned-off-by: Pekka Enberg \u003cpenberg@cs.helsinki.fi\u003e\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\n" }, { "commit": "7682486b3ee06f800d5b11033371c7c5e92e3057", "tree": "d0c2eda3204b085fc63200c787b2cf04f0298729", "parents": [ "6cb2a21049b8990df4576c5fce4d48d0206c22d5" ], "author": { "name": "Randy Dunlap", "email": "randy.dunlap@oracle.com", "time": "Wed Mar 19 17:00:40 2008 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Wed Mar 19 18:53:35 2008 -0700" }, "message": "mm: fix various kernel-doc comments\n\nFix various kernel-doc notation in mm/:\n\nfilemap.c: add function short description; convert 2 to kernel-doc\nfremap.c: change parameter \u0027prot\u0027 to @prot\npagewalk.c: change \"-\" in function parameters to \":\"\nslab.c: fix short description of kmem_ptr_validate()\nswap.c: fix description \u0026 parameters of put_pages_list()\nswap_state.c: fix function parameters\nvmalloc.c: change \"@returns\" to \"Returns:\" since that is not a parameter\n\nSigned-off-by: Randy Dunlap \u003crandy.dunlap@oracle.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "6d2144d355d2a532e5cc3fc12a6ba2a8d4ef15e4", "tree": "1c27eecfce86a166ca827bfbd2fe7a46888a7bc0", "parents": [ "b6210386787728b84db25adc4f1eba70440a4c73" ], "author": { "name": "Joe Korty", "email": "joe.korty@ccur.com", "time": "Wed Mar 05 15:04:59 2008 -0800" }, "committer": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Thu Mar 06 16:21:50 2008 -0800" }, "message": "slab: NUMA slab allocator migration bugfix\n\nNUMA slab allocator cpu migration bugfix\n\nThe NUMA slab allocator (specifically, cache_alloc_refill)\nis not refreshing its local copies of what cpu and what\nnuma node it is on, when it drops and reacquires the irq\nblock that it inherited from its caller. As a result\nthose values become invalid if an attempt to migrate the\nprocess to another numa node occured while the irq block\nhad been dropped.\n\nThe solution is to make cache_alloc_refill reload these\nvariables whenever it drops and reacquires the irq block.\n\nThe error is very difficult to hit. When it does occur,\none gets the following oops + stack traceback bits in\ncheck_spinlock_acquired:\n\n\tkernel BUG at mm/slab.c:2417\n\tcache_alloc_refill+0xe6\n\tkmem_cache_alloc+0xd0\n\t...\n\nThis patch was developed against 2.6.23, ported to and\ncompiled-tested only against 2.6.25-rc4.\n\nSigned-off-by: Joe Korty \u003cjoe.korty@ccur.com\u003e\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\n" }, { "commit": "1c61fc40fc264059ff41a614ed2d899127288281", "tree": "53dc93a57a21d07f02fb2fc58a6439c2186710e7", "parents": [ "9ac33b2b749e9539e84bbb1a41f97b066c4bd757" ], "author": { "name": "Joe Perches", "email": "joe@perches.com", "time": "Wed Mar 05 13:58:17 2008 -0800" }, "committer": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Thu Mar 06 16:21:49 2008 -0800" }, "message": "slab - use angle brackets for include of kmalloc_sizes.h\n\nMake them all use angle brackets and the directory name.\n\nAcked-by: Pekka Enberg \u003cpenberg@cs.helsinki.fi\u003e\nSigned-off-by: Joe Perches \u003cjoe@perches.com\u003e\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\n" }, { "commit": "9ac33b2b749e9539e84bbb1a41f97b066c4bd757", "tree": "3d00a7ad98e27a813e6d855fbeaf5cef5e783b96", "parents": [ "b773ad73690b5f34eee0c76f4273ac6fcbd88f82" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Tue Mar 04 12:24:22 2008 -0800" }, "committer": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Thu Mar 06 16:21:49 2008 -0800" }, "message": "slab numa fallback logic: Do not pass unfiltered flags to page allocator\n\nThe NUMA fallback logic should be passing local_flags to kmem_get_pages() and not simply the\nflags passed in.\n\nReviewed-by: Pekka Enberg \u003cpenberg@cs.helsinki.fi\u003e\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\n" }, { "commit": "e51bfd0ad10600a9fe4c8ede5ac2272e80075008", "tree": "a204156fbb0036fb76e89ceffa15a30e90bc3f75", "parents": [ "e760e716d47b48caf98da348368fd41b4a9b9e7e" ], "author": { "name": "Marcin Slusarz", "email": "marcin.slusarz@gmail.com", "time": "Sun Feb 10 11:21:54 2008 +0100" }, "committer": { "name": "Christoph Lameter", "email": "christoph@stapp.engr.sgi.com", "time": "Thu Feb 14 15:30:01 2008 -0800" }, "message": "slab: avoid double initialization \u0026 do initialization in 1 place\n\n- alloc_slabmgmt: initialize all slab fields in 1 place\n- slab-\u003enodeid was initialized twice: in alloc_slabmgmt\n and immediately after it in cache_grow\n\nSigned-off-by: Marcin Slusarz \u003cmarcin.slusarz@gmail.com\u003e\nCC: Christoph Lameter \u003cclameter@sgi.com\u003e\nReviewed-by: Pekka Enberg \u003cpenberg@cs.helsinki.fi\u003e\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\n" }, { "commit": "95402b3829010fe1e208f44e4a158ccade88969a", "tree": "3b9895b47623b4673e3c11121980e5171af76bbe", "parents": [ "86ef5c9a8edd78e6bf92879f32329d89b2d55b5a" ], "author": { "name": "Gautham R Shenoy", "email": "ego@in.ibm.com", "time": "Fri Jan 25 21:08:02 2008 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Fri Jan 25 21:08:02 2008 +0100" }, "message": "cpu-hotplug: replace per-subsystem mutexes with get_online_cpus()\n\nThis patch converts the known per-subsystem mutexes to get_online_cpus\nput_online_cpus. It also eliminates the CPU_LOCK_ACQUIRE and\nCPU_LOCK_RELEASE hotplug notification events.\n\nSigned-off-by: Gautham R Shenoy \u003cego@in.ibm.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "556a169dab38b5100df6f4a45b655dddd3db94c1", "tree": "c7788980db8dfb401dd4cf28f4445e1ab98f51d2", "parents": [ "eb36f4fc019835cecf0788907f6cab774508087b" ], "author": { "name": "Pekka Enberg", "email": "penberg@cs.helsinki.fi", "time": "Fri Jan 25 08:20:51 2008 +0200" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Fri Jan 25 08:30:36 2008 -0800" }, "message": "slab: fix bootstrap on memoryless node\n\nIf the node we\u0027re booting on doesn\u0027t have memory, bootstrapping kmalloc()\ncaches resorts to fallback_alloc() which requires -\u003enodelists set for all\nnodes. Fix that by calling set_up_list3s() for CACHE_CACHE in\nkmem_cache_init().\n\nAs kmem_getpages() is called with GFP_THISNODE set, this used to work before\nbecause of breakage in 2.6.22 and before with GFP_THISNODE returning pages from\nthe wrong node if a node had no memory. So it may have worked accidentally and\nin an unsafe manner because the pages would have been associated with the wrong\nnode which could trigger bug ons and locking troubles.\n\nTested-by: Mel Gorman \u003cmel@csn.ul.ie\u003e\nTested-by: Olaf Hering \u003colaf@aepfle.de\u003e\nReviewed-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nSigned-off-by: Pekka Enberg \u003cpenberg@cs.helsinki.fi\u003e\n[ With additional one-liner by Olaf Hering - Linus ]\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "9c09a95cf431fcf5720f2e408befa24b32b8cf4d", "tree": "c188d29023856625e91dea6c2e54d6e4c7969e87", "parents": [ "c5c99429fa57dcf6e05203ebe3676db1ec646793" ], "author": { "name": "Mel Gorman", "email": "mel@csn.ul.ie", "time": "Thu Jan 24 05:49:54 2008 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Thu Jan 24 08:07:27 2008 -0800" }, "message": "slab: partially revert list3 changes\n\nPartial revert the changes made by 04231b3002ac53f8a64a7bd142fde3fa4b6808c6\nto the kmem_list3 management. On a machine with a memoryless node, this\nBUG_ON was triggering\n\n\tstatic void *____cache_alloc_node(struct kmem_cache *cachep, gfp_t flags, int nodeid)\n\t{\n\t\tstruct list_head *entry;\n\t\tstruct slab *slabp;\n\t\tstruct kmem_list3 *l3;\n\t\tvoid *obj;\n\t\tint x;\n\n\t\tl3 \u003d cachep-\u003enodelists[nodeid];\n\t\tBUG_ON(!l3);\n\nSigned-off-by: Mel Gorman \u003cmel@csn.ul.ie\u003e\nCc: Pekka Enberg \u003cpenberg@cs.helsinki.fi\u003e\nAcked-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nCc: \"Aneesh Kumar K.V\" \u003caneesh.kumar@linux.vnet.ibm.com\u003e\nCc: Nishanth Aravamudan \u003cnacc@us.ibm.com\u003e\nCc: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nCc: Paul Mackerras \u003cpaulus@samba.org\u003e\nCc: Benjamin Herrenschmidt \u003cbenh@kernel.crashing.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "158a962422e4a54dc256b6a9b9562f3d30d34d9c", "tree": "21a71d7d671d12388f4b085e31b0258d1047f125", "parents": [ "6b6adc22a01941165d5af9a3e69e28e948b28f47" ], "author": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Wed Jan 02 13:04:48 2008 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Wed Jan 02 13:04:48 2008 -0800" }, "message": "Unify /proc/slabinfo configuration\n\nBoth SLUB and SLAB really did almost exactly the same thing for\n/proc/slabinfo setup, using duplicate code and per-allocator #ifdef\u0027s.\n\nThis just creates a common CONFIG_SLABINFO that is enabled by both SLUB\nand SLAB, and shares all the setup code. Maybe SLOB will want this some\nday too.\n\nReviewed-by: Pekka Enberg \u003cpenberg@cs.helsinki.fi\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "f8fcc93319faa09272185af100fb24e71b02ab03", "tree": "5696f15acbe0d8ad6895d7eef7566e72bacf8abc", "parents": [ "4b01a0b1613beeb01e12c78feb69e98f0da0a69a" ], "author": { "name": "Tetsuo Handa", "email": "penguin-kernel@I-love.SAKURA.ne.jp", "time": "Tue Dec 04 23:45:08 2007 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Wed Dec 05 09:21:18 2007 -0800" }, "message": "Add EXPORT_SYMBOL(ksize);\n\nmm/slub.c exports ksize(), but mm/slob.c and mm/slab.c don\u0027t.\n\nIt\u0027s used by binfmt_flat, which can be built as a module.\n\nSigned-off-by: Tetsuo Handa \u003cpenguin-kernel@I-love.SAKURA.ne.jp\u003e\nCc: Christoph Lameter \u003cclameter@sgi.com\u003e\nCc: Matt Mackall \u003cmpm@selenic.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "80cbd911ca25535f6bb66bbcbb98950ec328eb40", "tree": "5856978e32c675393bc2cb97e3647fc91e27f3bb", "parents": [ "e1cca7e8d484390169777b423a7fe46c7021fec1" ], "author": { "name": "Matthew Wilcox", "email": "matthew@wil.cx", "time": "Thu Nov 29 12:05:13 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Fri Nov 30 08:08:05 2007 -0800" }, "message": "Fix kmem_cache_free performance regression in slab\n\nThe database performance group have found that half the cycles spent\nin kmem_cache_free are spent in this one call to BUG_ON. Moving it\ninto the CONFIG_SLAB_DEBUG-only function cache_free_debugcheck() is a\nperformance win of almost 0.5% on their particular benchmark.\n\nThe call was added as part of commit ddc2e812d592457747c4367fb73edcaa8e1e49ff\nwith the comment that \"overhead should be minimal\". It may have been\nminimal at the time, but it isn\u0027t now.\n\n[ Quoth Pekka Enberg: \"I don\u0027t think the BUG_ON per se caused the\n performance regression but rather the virt_to_head_page() changes to\n virt_to_cache() that were added later.\" ]\n\nSigned-off-by: Matthew Wilcox \u003cwilly@linux.intel.com\u003e\nAcked-by: Pekka J Enberg \u003cpenberg@cs.helsinki.fi\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "cc550defe9790b495c96fafabc5a6528dc586f24", "tree": "e88689d55d9897c96287a6e92d0123ac8d59c29b", "parents": [ "e9b5a495dc23f58ecaa9517f1ff4dd9ac724935f" ], "author": { "name": "Akinobu Mita", "email": "akinobu.mita@gmail.com", "time": "Wed Nov 14 16:58:35 2007 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Wed Nov 14 18:45:36 2007 -0800" }, "message": "slab: fix typo in allocation failure handling\n\nThis patch fixes wrong array index in allocation failure handling.\n\nCc: Pekka Enberg \u003cpenberg@cs.helsinki.fi\u003e\nAcked-by: Christoph Lameter \u003cclameter@sgi.com\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": "183ff22bb6bd8188c904ebfb479656ae52230b72", "tree": "425207fc9cdca03df64ee8241ba764c75db4d8d1", "parents": [ "676b1855de0a18100b3c340084eb8ef72bde4fb1" ], "author": { "name": "Simon Arlott", "email": "simon@fire.lp0.eux", "time": "Sat Oct 20 01:27:18 2007 +0200" }, "committer": { "name": "Adrian Bunk", "email": "bunk@kernel.org", "time": "Sat Oct 20 01:27:18 2007 +0200" }, "message": "spelling fixes: mm/\n\nSpelling fixes in mm/.\n\nSigned-off-by: Simon Arlott \u003csimon@fire.lp0.eu\u003e\nSigned-off-by: Adrian Bunk \u003cbunk@kernel.org\u003e\n" }, { "commit": "12d00f6a121877235a5cacc56386936dd9bb81af", "tree": "dc8aafc8ae729f299b43cffa73c15406e76f76a7", "parents": [ "fbf1e473bd0ecc080a4c37bb89848b16c59ac18b" ], "author": { "name": "Akinobu Mita", "email": "akinobu.mita@gmail.com", "time": "Thu Oct 18 03:05:11 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Thu Oct 18 14:37:21 2007 -0700" }, "message": "cpu hotplug: slab: fix memory leak in cpu hotplug error path\n\nThis patch fixes memory leak in error path.\n\nIn reality, we don\u0027t need to call cpuup_canceled(cpu) for now. But upcoming\ncpu hotplug error handling change needs this.\n\nCc: Christoph Lameter \u003cclameter@sgi.com\u003e\nCc: Gautham R Shenoy \u003cego@in.ibm.com\u003e\nAcked-by: Pekka Enberg \u003cpenberg@cs.helsinki.fi\u003e\nSigned-off-by: Akinobu Mita \u003cakinobu.mita@gmail.com\u003e\nCc: Gautham R Shenoy \u003cego@in.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": "fbf1e473bd0ecc080a4c37bb89848b16c59ac18b", "tree": "179a7844c0c7722c3fa61d0787845db3c225df4d", "parents": [ "6c72ffaab9851e3ee380c77169c0cfcba6b58d4c" ], "author": { "name": "Akinobu Mita", "email": "akinobu.mita@gmail.com", "time": "Thu Oct 18 03:05:09 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Thu Oct 18 14:37:21 2007 -0700" }, "message": "cpu hotplug: slab: cleanup cpuup_callback()\n\ncpuup_callback() is too long. This patch factors out CPU_UP_CANCELLED and\nCPU_UP_PREPARE handlings from cpuup_callback().\n\nCc: Christoph Lameter \u003cclameter@sgi.com\u003e\nCc: Pekka Enberg \u003cpenberg@cs.helsinki.fi\u003e\nSigned-off-by: Akinobu Mita \u003cakinobu.mita@gmail.com\u003e\nCc: Gautham R Shenoy \u003cego@in.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": "bda5b655fe663c86ae16436ab983a656d73b6e62", "tree": "5c0a580aab8dba20fdd9770597706a567b6fe50c", "parents": [ "fb46f341d9868fe993626536c7449c2a1aec62a3" ], "author": { "name": "Robert P. J. Day", "email": "rpjday@mindspring.com", "time": "Tue Oct 16 23:30:05 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Wed Oct 17 08:42:58 2007 -0700" }, "message": "Delete gcc-2.95 compatible structure definition.\n\nSince nothing earlier than gcc-3.2 is supported for kernel\ncompilation, that 2.95 hack can be removed.\n\nSigned-off-by: Robert P. J. Day \u003crpjday@mindspring.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "4ba9b9d0ba0a49d91fa6417c7510ee36f48cf957", "tree": "191b4f45f926e44b882b1e87a9a85dc12230b892", "parents": [ "b811c202a0edadaac7242ab834fe7ba409978ae7" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Tue Oct 16 23:25:51 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Wed Oct 17 08:42:45 2007 -0700" }, "message": "Slab API: remove useless ctor parameter and reorder parameters\n\nSlab constructors currently have a flags parameter that is never used. And\nthe order of the arguments is opposite to other slab functions. The object\npointer is placed before the kmem_cache pointer.\n\nConvert\n\n ctor(void *object, struct kmem_cache *s, unsigned long flags)\n\nto\n\n ctor(struct kmem_cache *s, void *object)\n\nthroughout the kernel\n\n[akpm@linux-foundation.org: coupla fixes]\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": "e12ba74d8ff3e2f73a583500d7095e406df4d093", "tree": "a0d3385b65f0b3e1e00b0bbf11b75e7538a93edb", "parents": [ "c361be55b3128474aa66d31092db330b07539103" ], "author": { "name": "Mel Gorman", "email": "mel@csn.ul.ie", "time": "Tue Oct 16 01:25:52 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Oct 16 09:43:00 2007 -0700" }, "message": "Group short-lived and reclaimable kernel allocations\n\nThis patch marks a number of allocations that are either short-lived such as\nnetwork buffers or are reclaimable such as inode allocations. When something\nlike updatedb is called, long-lived and unmovable kernel allocations tend to\nbe spread throughout the address space which increases fragmentation.\n\nThis patch groups these allocations together as much as possible by adding a\nnew MIGRATE_TYPE. The MIGRATE_RECLAIMABLE type is for allocations that can be\nreclaimed on demand, but not moved. i.e. they can be migrated by deleting\nthem and re-reading the information from elsewhere.\n\nSigned-off-by: Mel Gorman \u003cmel@csn.ul.ie\u003e\nCc: Andy Whitcroft \u003capw@shadowen.org\u003e\nCc: 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": "6cb062296f73e74768cca2f3eaf90deac54de02d", "tree": "1572139653a6fc97cdffd06f2c1bfa650da2ce03", "parents": [ "58c0a4a7864b2dad6da4090813322fcd29a11c92" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Tue Oct 16 01:25:41 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Oct 16 09:42:59 2007 -0700" }, "message": "Categorize GFP flags\n\nThe function of GFP_LEVEL_MASK seems to be unclear. In order to clear up\nthe mystery we get rid of it and replace GFP_LEVEL_MASK with 3 sets of GFP\nflags:\n\nGFP_RECLAIM_MASK\tFlags used to control page allocator reclaim behavior.\n\nGFP_CONSTRAINT_MASK\tFlags used to limit where allocations can occur.\n\nGFP_SLAB_BUG_MASK\tFlags that the slab allocator BUG()s on.\n\nThese replace the uses of GFP_LEVEL mask in the slab allocators and in\nvmalloc.c.\n\nThe use of the flags not included in these sets may occur as a result of a\nslab allocation standing in for a page allocation when constructing scatter\ngather lists. Extraneous flags are cleared and not passed through to the\npage allocator. __GFP_MOVABLE/RECLAIMABLE, __GFP_COLD and __GFP_COMP will\nnow be ignored if passed to a slab allocator.\n\nChange the allocation of allocator meta data in SLAB and vmalloc to not\npass through flags listed in GFP_CONSTRAINT_MASK. SLAB already removes the\n__GFP_THISNODE flag for such allocations. Generalize that to also cover\nvmalloc. The use of GFP_CONSTRAINT_MASK also includes __GFP_HARDWALL.\n\nThe impact of allocator metadata placement on access latency to the\ncachelines of the object itself is minimal since metadata is only\nreferenced on alloc and free. The attempt is still made to place the meta\ndata optimally but we consistently allow fallback both in SLAB and vmalloc\n(SLUB does not need to allocate metadata like that).\n\nAllocator metadata may serve multiple in kernel users and thus should not\nbe subject to the limitations arising from a single allocation context.\n\n[akpm@linux-foundation.org: fix fallback_alloc()]\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": "04231b3002ac53f8a64a7bd142fde3fa4b6808c6", "tree": "7c55f86dbe697621943176cfa2a341dc0e6760ef", "parents": [ "9422ffba4adc82b4b67a3ca6ef51516aa61f8248" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Tue Oct 16 01:25:32 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Oct 16 09:42:58 2007 -0700" }, "message": "Memoryless nodes: Slab support\n\nSlab should not allocate control structures for nodes without memory. This\nmay seem to work right now but its unreliable since not all allocations can\nfall back due to the use of GFP_THISNODE.\n\nSwitching a few for_each_online_node\u0027s to N_NORMAL_MEMORY will allow us to\nonly allocate for nodes that have regular memory.\n\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nAcked-by: Nishanth Aravamudan \u003cnacc@us.ibm.com\u003e\nAcked-by: Lee Schermerhorn \u003clee.schermerhorn@hp.com\u003e\nAcked-by: Bob Picco \u003cbob.picco@hp.com\u003e\nCc: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nCc: Mel Gorman \u003cmel@skynet.ie\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "ef8b4520bd9f8294ffce9abd6158085bde5dc902", "tree": "c099a16691ac06208f4d3d65b71e7adaf7361fcd", "parents": [ "0da7e01f5f37f441cccd7c8c0586e06db0981907" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Tue Oct 16 01:24:46 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Oct 16 09:42:53 2007 -0700" }, "message": "Slab allocators: fail if ksize is called with a NULL parameter\n\nA NULL pointer means that the object was not allocated. One cannot\ndetermine the size of an object that has not been allocated. Currently we\nreturn 0 but we really should BUG() on attempts to determine the size of\nsomething nonexistent.\n\nkrealloc() interprets NULL to mean a zero sized object. Handle that\nseparately in krealloc().\n\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nAcked-by: Pekka Enberg \u003cpenberg@cs.helsinki.fi\u003e\nCc: Matt Mackall \u003cmpm@selenic.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "1807a1aaf5f2a35ea6d4b527b28bc8889d255a2f", "tree": "8b07b08bedebc9bc09648fa3443041a03121733f", "parents": [ "32d219854d31daba3407389ada1d454a4cd86fda" ], "author": { "name": "Siddha, Suresh B", "email": "suresh.b.siddha@intel.com", "time": "Wed Aug 22 14:01:49 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Wed Aug 22 19:52:46 2007 -0700" }, "message": "slab: skip calling cache_free_alien() when the platform is not numa capable\n\nSkip calling cache_free_alien() when the platform is not numa capable.\nThis will avoid cache misses that happen while accessing slabp (which is\nper page memory reference) to get nodeid. Instead use a global variable to\nskip the call, which is mostly likely to be present in the cache.\n\nThis gives a 0.8% performance boost with the database oltp workload on a\nquad-core SMP platform and by any means the number is not small :)\n\nSigned-off-by: Suresh Siddha \u003csuresh.b.siddha@intel.com\u003e\nAcked-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": "b8c1c5da1520977cb55a358f20fc09567d40cad9", "tree": "c762e6ad77297beed0978337ce2f5b0c50add739", "parents": [ "01e457cfcd5b6b6f18d0bb8cec0c5d43df56557e" ], "author": { "name": "Andrew Morton", "email": "akpm@linux-foundation.org", "time": "Tue Jul 24 12:02:40 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Jul 24 12:24:59 2007 -0700" }, "message": "slab: correctly handle __GFP_ZERO\n\nUse the correct local variable when calling into the page allocator. Local\n`flags\u0027 can have __GFP_ZERO set, which causes us to pass __GFP_ZERO into the\npage allocator, possibly from illegal contexts. The page allocator will later\ndo prep_zero_page()-\u003ekmap_atomic(..., KM_USER0) from irq contexts and will\nthen go BUG.\n\nCc: Mike Galbraith \u003cefault@gmx.de\u003e\nAcked-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": "20c2df83d25c6a95affe6157a4c9cac4cf5ffaac", "tree": "415c4453d2b17a50abe7a3e515177e1fa337bd67", "parents": [ "64fb98fc40738ae1a98bcea9ca3145b89fb71524" ], "author": { "name": "Paul Mundt", "email": "lethal@linux-sh.org", "time": "Fri Jul 20 10:11:58 2007 +0900" }, "committer": { "name": "Paul Mundt", "email": "lethal@linux-sh.org", "time": "Fri Jul 20 10:11:58 2007 +0900" }, "message": "mm: Remove slab destructors from kmem_cache_create().\n\nSlab destructors were no longer supported after Christoph\u0027s\nc59def9f222d44bb7e2f0a559f2906191a0862d7 change. They\u0027ve been\nBUGs for both slab and slub, and slob never supported them\neither.\n\nThis rips out support for the dtor pointer from kmem_cache_create()\ncompletely and fixes up every single callsite in the kernel (there were\nabout 224, not including the slab allocator definitions themselves,\nor the documentation references).\n\nSigned-off-by: Paul Mundt \u003clethal@linux-sh.org\u003e\n" }, { "commit": "a5c96d8a1c67f31ef48935a78da2d2076513842b", "tree": "d164c6b33a1de9ea157b99bb353f84e41774164e", "parents": [ "ce8c2293be47999584908069e78bf6d94beadc53" ], "author": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Thu Jul 19 13:17:15 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Thu Jul 19 13:17:15 2007 -0700" }, "message": "Fix up non-NUMA SLAB configuration for zero-sized allocations\n\nI suspect Christoph tested his code only in the NUMA configuration, for\nthe combination of SLAB+non-NUMA the zero-sized kmalloc\u0027s would not work.\n\nOf course, this would only trigger in configurations where those zero-\nsized allocations happen (not very common), so that may explain why it\nwasn\u0027t more widely noticed.\n\nSeen by by Andi Kleen under qemu, and there seems to be a report by\nMichael Tsirkin on it too.\n\nCc: Andi Kleen \u003cak@suse.de\u003e\nCc: Roland Dreier \u003crdreier@cisco.com\u003e\nCc: Michael S. Tsirkin \u003cmst@dev.mellanox.co.il\u003e\nCc: Pekka Enberg \u003cpenberg@cs.helsinki.fi\u003e\nCc: Christoph Lameter \u003cclameter@sgi.com\u003e\nCc: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "ea02e3dde3509ffa7fda7f8de9c8a366e03f7bbd", "tree": "0c48aa948de8549a2b183c2ed3e5b338fa9730b7", "parents": [ "3abf7afd406866a84276d3ed04f4edf6070c9cb5" ], "author": { "name": "David Howells", "email": "dhowells@redhat.com", "time": "Thu Jul 19 01:49:09 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Thu Jul 19 10:04:50 2007 -0700" }, "message": "FRV: work around a possible compiler bug\n\nWork around a possible bug in the FRV compiler.\n\nWhat appears to be happening is that gcc resolves the\n__builtin_constant_p() in kmalloc() to true, but then fails to reduce the\ntherefore constant conditions in the if-statements it guards to constant\nresults.\n\nWhen compiling with -O2 or -Os, one single spurious error crops up in\ncpuup_callback() in mm/slab.c. This can be avoided by making the memsize\nvariable const.\n\nSigned-off-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": "9281acea6a3687ff0f262e0be31eac34895b95d7", "tree": "f060d6e4f6a5da1c82bc789104683d39377a2e9a", "parents": [ "b45d52797432bd6b5d9786dbda940eb8d0b9ed06" ], "author": { "name": "Tejun Heo", "email": "htejun@gmail.com", "time": "Tue Jul 17 04:03:51 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Jul 17 10:23:03 2007 -0700" }, "message": "kallsyms: make KSYM_NAME_LEN include space for trailing \u0027\\0\u0027\n\nKSYM_NAME_LEN is peculiar in that it does not include the space for the\ntrailing \u0027\\0\u0027, forcing all users to use KSYM_NAME_LEN + 1 when allocating\nbuffer. This is nonsense and error-prone. Moreover, when the caller\nforgets that it\u0027s very likely to subtly bite back by corrupting the stack\nbecause the last position of the buffer is always cleared to zero.\n\nThis patch increments KSYM_NAME_LEN by one and updates code accordingly.\n\n* off-by-one bug in asm-powerpc/kprobes.h::kprobe_lookup_name() macro\n is fixed.\n\n* Where MODULE_NAME_LEN and KSYM_NAME_LEN were used together,\n MODULE_NAME_LEN was treated as if it didn\u0027t include space for the\n trailing \u0027\\0\u0027. Fix it.\n\nSigned-off-by: Tejun Heo \u003chtejun@gmail.com\u003e\nAcked-by: Paulo Marques \u003cpmarques@grupopie.com\u003e\nCc: Benjamin Herrenschmidt \u003cbenh@kernel.crashing.org\u003e\nCc: Paul Mackerras \u003cpaulus@samba.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "81cda6626178cd55297831296ba8ecedbfd8b52d", "tree": "fa35a6a04db63080bbeb42f33f4b4a891b7fc96c", "parents": [ "ce15fea8274acca06daa1674322d37a7d3f0036b" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Tue Jul 17 04:03:29 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Jul 17 10:23:01 2007 -0700" }, "message": "Slab allocators: Cleanup zeroing allocations\n\nIt becomes now easy to support the zeroing allocs with generic inline\nfunctions in slab.h. Provide inline definitions to allow the continued use of\nkzalloc, kmem_cache_zalloc etc but remove other definitions of zeroing\nfunctions from the slab allocators and util.c.\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": "d07dbea46405b37d59495eb4de9d1056dcfb7c6d", "tree": "221376c8c5509a88f8942246180685d5c01baf46", "parents": [ "6cb8f91320d3e720351c21741da795fed580b21b" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Tue Jul 17 04:03:23 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Jul 17 10:23:01 2007 -0700" }, "message": "Slab allocators: support __GFP_ZERO in all allocators\n\nA kernel convention for many allocators is that if __GFP_ZERO is passed to an\nallocator then the allocated memory should be zeroed.\n\nThis is currently not supported by the slab allocators. The inconsistency\nmakes it difficult to implement in derived allocators such as in the uncached\nallocator and the pool allocators.\n\nIn addition the support zeroed allocations in the slab allocators does not\nhave a consistent API. There are no zeroing allocator functions for NUMA node\nplacement (kmalloc_node, kmem_cache_alloc_node). The zeroing allocations are\nonly provided for default allocs (kzalloc, kmem_cache_zalloc_node).\n__GFP_ZERO will make zeroing universally available and does not require any\naddititional functions.\n\nSo add the necessary logic to all slab allocators to support __GFP_ZERO.\n\nThe code is added to the hot path. The gfp flags are on the stack and so the\ncacheline is readily available for checking if we want a zeroed object.\n\nZeroing while allocating is now a frequent operation and we seem to be\ngradually approaching a 1-1 parity between zeroing and not zeroing allocs.\nThe current tree has 3476 uses of kmalloc vs 2731 uses of kzalloc.\n\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nAcked-by: Pekka Enberg \u003cpenberg@cs.helsinki.fi\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "6cb8f91320d3e720351c21741da795fed580b21b", "tree": "c9f73c8b82cd0f6c534939b8b9f36e8615b0ab2d", "parents": [ "ef2ad80c7d255ed0449eda947c2d700635b7e0f5" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Tue Jul 17 04:03:22 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Jul 17 10:23:01 2007 -0700" }, "message": "Slab allocators: consistent ZERO_SIZE_PTR support and NULL result semantics\n\nDefine ZERO_OR_NULL_PTR macro to be able to remove the checks from the\nallocators. Move ZERO_SIZE_PTR related stuff into slab.h.\n\nMake ZERO_SIZE_PTR work for all slab allocators and get rid of the\nWARN_ON_ONCE(size \u003d\u003d 0) that is still remaining in SLAB.\n\nMake slub return NULL like the other allocators if a too large memory segment\nis requested via __kmalloc.\n\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nAcked-by: Pekka Enberg \u003cpenberg@cs.helsinki.fi\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "ef2ad80c7d255ed0449eda947c2d700635b7e0f5", "tree": "bc44916bdb25de29c8211566a4b5a1c041fa8ab6", "parents": [ "d45f39cb06610ea456e1d689149b9becacda8b40" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Tue Jul 17 04:03:21 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Jul 17 10:23:01 2007 -0700" }, "message": "Slab allocators: consolidate code for krealloc in mm/util.c\n\nThe size of a kmalloc object is readily available via ksize(). ksize is\nprovided by all allocators and thus we can implement krealloc in a generic\nway.\n\nImplement krealloc in mm/util.c and drop slab specific implementations of\nkrealloc.\n\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nAcked-by: Pekka Enberg \u003cpenberg@cs.helsinki.fi\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "897e679b17460b52752a038af29db356fe1bd759", "tree": "9b921ff267dabfbc662e4d245e6bc86a52a6f5ce", "parents": [ "6ea6e6887dad1fd44e6d5020a0fd355af4f2b6b3" ], "author": { "name": "Adrian Bunk", "email": "bunk@stusta.de", "time": "Sun Jul 15 23:38:20 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Mon Jul 16 09:05:36 2007 -0700" }, "message": "mm/slab.c: start_cpu_timer() should be __cpuinit\n\nstart_cpu_timer() should be __cpuinit (which also matches what it\u0027s\ncallers are).\n\n__devinit didn\u0027t cause problems, it simply wasted a few bytes of memory\nfor the common CONFIG_HOTPLUG_CPU\u003dn case.\n\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": "b92151bab91ef906378d3e0e7128d55dd641e966", "tree": "81f96a5976bcc749c42a9ae293e16667ea2d9afe", "parents": [ "68e116a3b57d09b220fe38712bebd956b6dbbbc6" ], "author": { "name": "Pavel Emelianov", "email": "xemul@sw.ru", "time": "Sun Jul 15 23:38:04 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Mon Jul 16 09:05:35 2007 -0700" }, "message": "Make /proc/slabinfo use seq_list_xxx helpers\n\nThis entry prints a header in .start callback. This is OK, but the more\nelegant solution would be to move this into the .show callback and use\nseq_list_start_head() in .start one.\n\nI have left it as is in order to make the patch just switch to new API and\nnoting more.\n\n[adobriyan@sw.ru: Wrong pointer was used as kmem_cache pointer]\nSigned-off-by: Pavel Emelianov \u003cxemul@openvz.org\u003e\nCc: Christoph Lameter \u003cclameter@sgi.com\u003e\nCc: Pekka Enberg \u003cpenberg@cs.helsinki.fi\u003e\nSigned-off-by: Alexey Dobriyan \u003cadobriyan@sw.ru\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "87a927c715789853cc8331d76039a2fd657a832a", "tree": "c185e20386fd3ec8679d3d52bae822d9963df5da", "parents": [ "2bcb1b7de9eeea969a25d5f2b4511195cca9f2a2" ], "author": { "name": "David Woodhouse", "email": "dwmw2@infradead.org", "time": "Wed Jul 04 21:26:44 2007 -0400" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Thu Jul 05 15:54:13 2007 -0700" }, "message": "Fix slab redzone alignment\n\nCommit b46b8f19c9cd435ecac4d9d12b39d78c137ecd66 fixed a couple of bugs\nby switching the redzone to 64 bits. Unfortunately, it neglected to\nensure that the _second_ redzone, after the slab object, is aligned\ncorrectly. This caused illegal instruction faults on sparc32, which for\nsome reason not entirely clear to me are not trapped and fixed up.\n\nTwo things need to be done to fix this:\n - increase the object size, rounding up to alignof(long long) so\n that the second redzone can be aligned correctly.\n - If SLAB_STORE_USER is set but alignof(long long)\u003d\u003d8, allow a\n full 64 bits of space for the user word at the end of the buffer,\n even though we may not _use_ the whole 64 bits.\n\nThis patch should be a no-op on any 64-bit architecture or any 32-bit\narchitecture where alignof(long long) \u003d\u003d 4. Of the others, it\u0027s tested\non ppc32 by myself and a very similar patch was tested on sparc32 by\nMark Fortescue, who reported the new problem.\n\nAlso, fix the conditions for FORCED_DEBUG, which hadn\u0027t been adjusted to\nthe new sizes. Again noticed by Mark.\n\nSigned-off-by: David Woodhouse \u003cdwmw2@infradead.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "17022220dd70378b2f17fa9b0248f15067d88c58", "tree": "52a290cde0e3c6719df83d20ca02af4dbabfbbd6", "parents": [ "0f4915b9c5d7a35da11bfcff80ae6466cb7b9fc4" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Sun Jul 01 12:06:35 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Sun Jul 01 12:29:43 2007 -0700" }, "message": "SLAB: remove WARN_ON_ONCE for zero sized objects for 2.6.22 release\n\nWe agreed to remove the WARN_ON_ONCE before 2.6.22 is released.\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": "3cdc0ed0cea50ea08dd146c1bbc82b1bcc2e1b80", "tree": "4eac1f33e52f3efeaf4cbd181877ebd25f354ee1", "parents": [ "a210906c1b791af1434323f69427286039c9c8b9" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Fri Jun 08 13:46:46 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Fri Jun 08 17:23:32 2007 -0700" }, "message": "slab: fix alien cache handling\n\ncache_free_alien must be called regardless if we use alien caches or not.\ncache_free_alien() will do the right thing if there are no alien caches\navailable.\n\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nCc: Paul Mundt \u003clethal@linux-sh.org\u003e\nAcked-by: Pekka J Enberg \u003cpenberg@cs.helsinki.fi\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "38bdc32af442b6ab09ed61b8b669072098c95dd2", "tree": "8c6a6c3234383b94d7c68183b9e3bb071764d7f0", "parents": [ "577a32f620271416d05f852477151fb51c790bc6" ], "author": { "name": "Sam Ravnborg", "email": "sam@ravnborg.org", "time": "Thu May 17 23:48:19 2007 +0200" }, "committer": { "name": "Sam Ravnborg", "email": "sam@ravnborg.org", "time": "Sat May 19 09:11:58 2007 +0200" }, "message": "mm/slab: fix section mismatch warning\n\nUse the new __init_refok marker to avoid the\nsection mismatch warning from slab.c\n\nSigned-off-by: Sam Ravnborg \u003csam@ravnborg.org\u003e\n" }, { "commit": "0aa817f078b655d0ae36669169d73a5c8a388016", "tree": "140acc4d0dc992b4d20394f6a6412a7c1bb3a306", "parents": [ "3ec0974210fe1b7c0618ad6e39a882a4237d7de2" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Wed May 16 22:11:01 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Thu May 17 05:23:04 2007 -0700" }, "message": "Slab allocators: define common size limitations\n\nCurrently we have a maze of configuration variables that determine the\nmaximum slab size. Worst of all it seems to vary between SLAB and SLUB.\n\nSo define a common maximum size for kmalloc. For conveniences sake we use\nthe maximum size ever supported which is 32 MB. We limit the maximum size\nto a lower limit if MAX_ORDER does not allow such large allocations.\n\nFor many architectures this patch will have the effect of adding large\nkmalloc sizes. x86_64 adds 5 new kmalloc sizes. So a small amount of\nmemory will be needed for these caches (contemporary SLAB has dynamically\nsizeable node and cpu structure so the waste is less than in the past)\n\nMost architectures will then be able to allocate object with sizes up to\nMAX_ORDER. We have had repeated breakage (in fact whenever we doubled the\nnumber of supported processors) on IA64 because one or the other struct\ngrew beyond what the slab allocators supported. This will avoid future\nissues and f.e. avoid fixes for 2k and 4k cpu support.\n\nCONFIG_LARGE_ALLOCS is no longer necessary so drop it.\n\nIt fixes sparc64 with SLAB.\n\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nSigned-off-by: \"David S. Miller\" \u003cdavem@davemloft.net\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "a35afb830f8d71ec211531aeb9a621b09a2efb39", "tree": "198280081e1f8b2f6c450742a5075cc7904a3d58", "parents": [ "5577bd8a85c8b7643a241789b14fafa9c8a6c7db" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Wed May 16 22:10:57 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Thu May 17 05:23:04 2007 -0700" }, "message": "Remove SLAB_CTOR_CONSTRUCTOR\n\nSLAB_CTOR_CONSTRUCTOR is always specified. No point in checking it.\n\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nCc: David Howells \u003cdhowells@redhat.com\u003e\nCc: Jens Axboe \u003cjens.axboe@oracle.com\u003e\nCc: Steven French \u003csfrench@us.ibm.com\u003e\nCc: Michael Halcrow \u003cmhalcrow@us.ibm.com\u003e\nCc: OGAWA Hirofumi \u003chirofumi@mail.parknet.co.jp\u003e\nCc: Miklos Szeredi \u003cmiklos@szeredi.hu\u003e\nCc: Steven Whitehouse \u003cswhiteho@redhat.com\u003e\nCc: Roman Zippel \u003czippel@linux-m68k.org\u003e\nCc: David Woodhouse \u003cdwmw2@infradead.org\u003e\nCc: Dave Kleikamp \u003cshaggy@austin.ibm.com\u003e\nCc: Trond Myklebust \u003ctrond.myklebust@fys.uio.no\u003e\nCc: \"J. Bruce Fields\" \u003cbfields@fieldses.org\u003e\nCc: Anton Altaparmakov \u003caia21@cantab.net\u003e\nCc: Mark Fasheh \u003cmark.fasheh@oracle.com\u003e\nCc: Paul Mackerras \u003cpaulus@samba.org\u003e\nCc: Christoph Hellwig \u003chch@lst.de\u003e\nCc: Jan Kara \u003cjack@ucw.cz\u003e\nCc: David Chinner \u003cdgc@sgi.com\u003e\nCc: \"David S. Miller\" \u003cdavem@davemloft.net\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "0b44f7a5b5078d737b3f5914978aabb761254840", "tree": "7d726723f427a3add9a22ac4d34ca236b6f8376a", "parents": [ "4b6f0750457db1f573eb6226960a432da3be8fe2" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Wed May 16 22:10:53 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Thu May 17 05:23:03 2007 -0700" }, "message": "slab: warn on zero-length allocations\n\nslub warns on this, and we\u0027re working on making kmalloc(0) return NULL.\nLet\u0027s make slab warn as well so our testers detect such callers more\nrapidly.\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": "c59def9f222d44bb7e2f0a559f2906191a0862d7", "tree": "51bc0c12906b13887c6e53d1e06b48b411443129", "parents": [ "afc0cedbe9138e3e8b38bfa1e4dfd01a2c537d62" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Wed May 16 22:10:50 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Thu May 17 05:23:03 2007 -0700" }, "message": "Slab allocators: Drop support for destructors\n\nThere is no user of destructors left. There is no reason why we should keep\nchecking for destructors calls in the slab allocators.\n\nThe RFC for this patch was discussed at\nhttp://marc.info/?l\u003dlinux-kernel\u0026m\u003d117882364330705\u0026w\u003d2\n\nDestructors were mainly used for list management which required them to take a\nspinlock. Taking a spinlock in a destructor is a bit risky since the slab\nallocators may run the destructors anytime they decide a slab is no longer\nneeded.\n\nPatch drops destructor support. Any attempt to use a destructor will BUG().\n\nAcked-by: Pekka Enberg \u003cpenberg@cs.helsinki.fi\u003e\nAcked-by: Paul Mundt \u003clethal@linux-sh.org\u003e\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": "4037d452202e34214e8a939fa5621b2b3bbb45b7", "tree": "31b59c0ca94fba4d53b6738b0bad3d1e9fde3063", "parents": [ "77461ab33229d48614402decfb1b2eaa6d446861" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Wed May 09 02:35:14 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Wed May 09 12:30:56 2007 -0700" }, "message": "Move remote node draining out of slab allocators\n\nCurrently the slab allocators contain callbacks into the page allocator to\nperform the draining of pagesets on remote nodes. This requires SLUB to have\na whole subsystem in order to be compatible with SLAB. Moving node draining\nout of the slab allocators avoids a section of code in SLUB.\n\nMove the node draining so that is is done when the vm statistics are updated.\nAt that point we are already touching all the cachelines with the pagesets of\na processor.\n\nAdd a expire counter there. If we have to update per zone or global vm\nstatistics then assume that the pageset will require subsequent draining.\n\nThe expire counter will be decremented on each vm stats update pass until it\nreaches zero. Then we will drain one batch from the pageset. The draining\nwill cause vm counter updates which will then cause another expiration until\nthe pcp is empty. So we will drain a batch every 3 seconds.\n\nNote that remote node draining is a somewhat esoteric feature that is required\non large NUMA systems because otherwise significant portions of system memory\ncan become trapped in pcp queues. The number of pcp is determined by the\nnumber of processors and nodes in a system. A system with 4 processors and 2\nnodes has 8 pcps which is okay. But a system with 1024 processors and 512\nnodes has 512k pcps with a high potential for large amount of memory being\ncaught in them.\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": "d1187ed21026fd512b87851d0ca26d9ae16f9059", "tree": "35d77758f134f3b69d3e00ca042a5d5ca6a59373", "parents": [ "455c017ae3934797653549704c286e7bcc3a9397" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Wed May 09 02:35:12 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Wed May 09 12:30:56 2007 -0700" }, "message": "vmstat: use our own timer events\n\nvmstat is currently using the cache reaper to periodically bring the\nstatistics up to date. The cache reaper does only exists in SLUB as a way to\nprovide compatibility with SLAB. This patch removes the vmstat calls from the\nslab allocators and provides its own handling.\n\nThe advantage is also that we can use a different frequency for the updates.\nRefreshing vm stats is a pretty fast job so we can run this every second and\nstagger this by only one tick. This will lead to some overlap in large\nsystems. F.e a system running at 250 HZ with 1024 processors will have 4 vm\nupdates occurring at once.\n\nHowever, the vm stats update only accesses per node information. It is only\nnecessary to stagger the vm statistics updates per processor in each node. Vm\ncounter updates occurring on distant nodes will not cause cacheline\ncontention.\n\nWe could implement an alternate approach that runs the first processor on each\nnode at the second and then each of the other processor on a node on a\nsubsequent tick. That may be useful to keep a large amount of the second free\nof timer activity. Maybe the timer folks will have some feedback on this one?\n\n[jirislaby@gmail.com: add missing break]\nCc: Arjan van de Ven \u003carjan@linux.intel.com\u003e\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nSigned-off-by: Jiri Slaby \u003cjirislaby@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": "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": "5830c5902138f80b0a097b797200c739466beedd", "tree": "f325f18365db79f9d17793b8d551e81094f48e15", "parents": [ "a4798833d26b293fd18b7bf102991426aa0b56fd" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "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": "slab: shut down cache_reaper when cpu goes down\n\nShutdown the cache_reaper if the cpu is brought down and set the\ncache_reap.func to NULL. Otherwise hotplug shuts down the reaper for good.\n\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.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": "38c3bd96a0a7d375e12f173c34fbebf9f153cb56", "tree": "4c96cfe17f7578eb182471c8ad17653837abc219", "parents": [ "e7407dcc69e077ac34a527842db916abfbc458df" ], "author": { "name": "Heiko Carstens", "email": "heiko.carstens@de.ibm.com", "time": "Wed May 09 02:34:05 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Wed May 09 12:30:51 2007 -0700" }, "message": "slab: use CPU_LOCK_[ACQUIRE|RELEASE]\n\nLooks like this was forgotten when CPU_LOCK_[ACQUIRE|RELEASE] was\nintroduced.\n\nCc: Pekka Enberg \u003cpenberg@cs.helsinki.fi\u003e\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": "7ae439ce0c01d7db0c70d1542985969e95ef750d", "tree": "7da3778be3e1c80cd834bf72dc33c3c82ff43017", "parents": [ "5e6d444ea1f72b8148354a9baf0ea8fa3dd0425b" ], "author": { "name": "Pekka J Enberg", "email": "penberg@cs.helsinki.fi", "time": "Wed May 09 02:32:46 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Wed May 09 12:30:46 2007 -0700" }, "message": "krealloc: fix kerneldoc comments\n\nNo \"blank\" (or \"*\") line is allowed between the function name and lines for\nit parameter(s).\n\nCc: Randy Dunlap \u003crandy.dunlap@oracle.com\u003e\nSigned-off-by: Pekka Enberg \u003cpenberg@cs.helsinki.fi\u003e\nCc: 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": "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": "b46b8f19c9cd435ecac4d9d12b39d78c137ecd66", "tree": "4b1e393eeb42f70867d30a7d0116ff948941095b", "parents": [ "5b94f675f57e4ff16c8fda09088d7480a84dcd91" ], "author": { "name": "David Woodhouse", "email": "dwmw2@infradead.org", "time": "Tue May 08 00:22:59 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue May 08 11:14:57 2007 -0700" }, "message": "Increase slab redzone to 64bits\n\nThere are two problems with the existing redzone implementation.\n\nFirstly, it\u0027s causing misalignment of structures which contain a 64-bit\ninteger, such as netfilter\u0027s \u0027struct ipt_entry\u0027 -- causing netfilter\nmodules to fail to load because of the misalignment. (In particular, the\nfirst check in\nnet/ipv4/netfilter/ip_tables.c::check_entry_size_and_hooks())\n\nOn ppc32 and sparc32, amongst others, __alignof__(uint64_t) \u003d\u003d 8.\n\nWith slab debugging, we use 32-bit redzones. And allocated slab objects\naren\u0027t sufficiently aligned to hold a structure containing a uint64_t.\n\nBy _just_ setting ARCH_KMALLOC_MINALIGN to __alignof__(u64) we\u0027d disable\nredzone checks on those architectures. By using 64-bit redzones we avoid that\nloss of debugging, and also fix the other problem while we\u0027re at it.\n\nWhen investigating this, I noticed that on 64-bit platforms we\u0027re using a\n32-bit value of RED_ACTIVE/RED_INACTIVE in the 64-bit memory location set\naside for the redzone. Which means that the four bytes immediately before\nor after the allocated object at 0x00,0x00,0x00,0x00 for LE and BE\nmachines, respectively. Which is probably not the most useful choice of\npoison value.\n\nOne way to fix both of those at once is just to switch to 64-bit\nredzones in all cases.\n\nSigned-off-by: David Woodhouse \u003cdwmw2@infradead.org\u003e\nAcked-by: Pekka Enberg \u003cpenberg@cs.helsinki.fi\u003e\nCc: Christoph Lameter \u003cclameter@engr.sgi.com\u003e\nAcked-by: David S. Miller \u003cdavem@davemloft.net\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "cfce66047f1893cb7d3abb0d53e65cbbd8d605f0", "tree": "b6e533a6b3deee686c42abf6c9117154548c0aaf", "parents": [ "4f104934591ed98534b3a4c3d17d972b790e9c42" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Sun May 06 14:50:17 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Mon May 07 12:12:57 2007 -0700" }, "message": "Slab allocators: remove useless __GFP_NO_GROW flag\n\nThere is no user remaining and I have never seen any use of that flag.\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": "4f104934591ed98534b3a4c3d17d972b790e9c42", "tree": "149d7ba5ab6b9b7f8a82eb3ce41cb36f28bccaf9", "parents": [ "50953fe9e00ebbeffa032a565ab2f08312d51a87" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Sun May 06 14:50:17 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Mon May 07 12:12:57 2007 -0700" }, "message": "slab allocators: Remove SLAB_CTOR_ATOMIC\n\nSLAB_CTOR atomic is never used which is no surprise since I cannot imagine\nthat one would want to do something serious in a constructor or destructor.\n In particular given that the slab allocators run with interrupts disabled.\n Actions in constructors and destructors are by their nature very limited\nand usually do not go beyond initializing variables and list operations.\n\n(The i386 pgd ctor and dtors do take a spinlock in constructor and\ndestructor..... I think that is the furthest we go at this point.)\n\nThere is no flag passed to the destructor so removing SLAB_CTOR_ATOMIC also\nestablishes a certain symmetry.\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": "50953fe9e00ebbeffa032a565ab2f08312d51a87", "tree": "9f95f56f0b51600959a76cd88ce17f6e9c7a98a3", "parents": [ "4b1d89290b62bb2db476c94c82cf7442aab440c8" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Sun May 06 14:50:16 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Mon May 07 12:12:57 2007 -0700" }, "message": "slab allocators: Remove SLAB_DEBUG_INITIAL flag\n\nI have never seen a use of SLAB_DEBUG_INITIAL. It is only supported by\nSLAB.\n\nI think its purpose was to have a callback after an object has been freed\nto verify that the state is the constructor state again? The callback is\nperformed before each freeing of an object.\n\nI would think that it is much easier to check the object state manually\nbefore the free. That also places the check near the code object\nmanipulation of the object.\n\nAlso the SLAB_DEBUG_INITIAL callback is only performed if the kernel was\ncompiled with SLAB debugging on. If there would be code in a constructor\nhandling SLAB_DEBUG_INITIAL then it would have to be conditional on\nSLAB_DEBUG otherwise it would just be dead code. But there is no such code\nin the kernel. I think SLUB_DEBUG_INITIAL is too problematic to make real\nuse of, difficult to understand and there are easier ways to accomplish the\nsame effect (i.e. add debug code before kfree).\n\nThere is a related flag SLAB_CTOR_VERIFY that is frequently checked to be\nclear in fs inode caches. Remove the pointless checks (they would even be\npointless without removeal of SLAB_DEBUG_INITIAL) from the fs constructors.\n\nThis is the last slab flag that SLUB did not support. Remove the check for\nunimplemented flags from SLUB.\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": "824ebef122153a03925ae0ed211b4e8568d1c8db", "tree": "2a9ce9acc187b6a6985064c773cbf850ad405a07", "parents": [ "f0f3980b21508bd573eff1746d469436f50a903d" ], "author": { "name": "Akinobu Mita", "email": "akinobu.mita@gmail.com", "time": "Sun May 06 14:49:58 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Mon May 07 12:12:55 2007 -0700" }, "message": "fault injection: fix failslab with CONFIG_NUMA\n\nCurrently failslab injects failures into ____cache_alloc(). But with enabling\nCONFIG_NUMA it\u0027s not enough to let actual slab allocator functions (kmalloc,\nkmem_cache_alloc, ...) return NULL.\n\nThis patch moves fault injection hook inside of __cache_alloc() and\n__cache_alloc_node(). These are lower call path than ____cache_alloc() and\nenable to inject faulures to slab allocators with CONFIG_NUMA.\n\nAcked-by: Pekka Enberg \u003cpenberg@cs.helsinki.fi\u003e\nSigned-off-by: Akinobu Mita \u003cakinobu.mita@gmail.com\u003e\nCc: 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": "5af60839909b8e3b28ca7cd7912fa0b23475617f", "tree": "774b068673ad7bb6fc67d29339c9a07bf12a7789", "parents": [ "96018fdacbfcaf6a0694d066b525f67c24025688" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Sun May 06 14:49:56 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Mon May 07 12:12:55 2007 -0700" }, "message": "slab allocators: Remove obsolete SLAB_MUST_HWCACHE_ALIGN\n\nThis patch was recently posted to lkml and acked by Pekka.\n\nThe flag SLAB_MUST_HWCACHE_ALIGN is\n\n1. Never checked by SLAB at all.\n\n2. A duplicate of SLAB_HWCACHE_ALIGN for SLUB\n\n3. Fulfills the role of SLAB_HWCACHE_ALIGN for SLOB.\n\nThe only remaining use is in sparc64 and ppc64 and their use there\nreflects some earlier role that the slab flag once may have had. If\nits specified then SLAB_HWCACHE_ALIGN is also specified.\n\nThe flag is confusing, inconsistent and has no purpose.\n\nRemove it.\n\nAcked-by: Pekka Enberg \u003cpenberg@cs.helsinki.fi\u003e\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": "b4169525bc2336ea6581c6ff2aa88b2671e3b9f9", "tree": "1d436ed4ccfca64e00e5bf5b9d5c373fd7d956d6", "parents": [ "bc0055aee40ba40627361d8ffd8530d315920f18" ], "author": { "name": "matze", "email": "matze@riseup.net", "time": "Sun May 06 14:49:52 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Mon May 07 12:12:54 2007 -0700" }, "message": "include KERN_* constant in printk() calls in mm/slab.c\n\nSigned-off-by: Matthias Kaehlcke \u003cmatthias.kaehlcke@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": "b49af68ff9fc5d6e0d96704a1843968b91cc73c6", "tree": "eb5e6d9425a9069cdfc45b09a1d0f61f1419d2c2", "parents": [ "6d7779538f765963ced45a3fa4bed7ba8d2c277d" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Sun May 06 14:49:41 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Mon May 07 12:12:54 2007 -0700" }, "message": "Add virt_to_head_page and consolidate code in slab and slub\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": "d85f33855c303acfa87fa457157cef755b6087df", "tree": "f1184a1a24b432727b0399594ede37c7539db888", "parents": [ "30520864839dc796fd314812e7036e754880b47d" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Sun May 06 14:49:39 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Mon May 07 12:12:53 2007 -0700" }, "message": "Make page-\u003eprivate usable in compound pages\n\nIf we add a new flag so that we can distinguish between the first page and the\ntail pages then we can avoid to use page-\u003eprivate in the first page.\npage-\u003eprivate \u003d\u003d page for the first page, so there is no real information in\nthere.\n\nFreeing up page-\u003eprivate makes the use of compound pages more transparent.\nThey become more usable like real pages. Right now we have to be careful f.e.\n if we are going beyond PAGE_SIZE allocations in the slab on i386 because we\ncan then no longer use the private field. This is one of the issues that\ncause us not to support debugging for page size slabs in SLAB.\n\nHaving page-\u003eprivate available for SLUB would allow more meta information in\nthe page struct. I can probably avoid the 16 bit ints that I have in there\nright now.\n\nAlso if page-\u003eprivate is available then a compound page may be equipped with\nbuffer heads. This may free up the way for filesystems to support larger\nblocks than page size.\n\nWe add PageTail as an alias of PageReclaim. Compound pages cannot currently\nbe reclaimed. Because of the alias one needs to check PageCompound first.\n\nThe RFC for the this approach was discussed at\nhttp://marc.info/?t\u003d117574302800001\u0026r\u003d1\u0026w\u003d2\n\n[nacc@us.ibm.com: fix hugetlbfs]\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nSigned-off-by: Nishanth Aravamudan \u003cnacc@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": "a3a02be79114b854acc555e8ed686eb84f44ae2e", "tree": "5d75b3766467558909213bc9d14bc90cf9dc8d62", "parents": [ "3b1d92c56514987010bb0201b5c71aeb633fc4f8" ], "author": { "name": "Andrew Morton", "email": "akpm@linux-foundation.org", "time": "Sun May 06 14:49:31 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Mon May 07 12:12:53 2007 -0700" }, "message": "slab: mark set_up_list3s() __init\n\nIt is only ever used prior to free_initmem().\n\n(It will cause a warning when we run the section checking, but that\u0027s a\nfalse-positive and it simply changes the source of an existing warning, which\nis also a false-positive)\n\nCc: Christoph Lameter \u003cclameter@engr.sgi.com\u003e\nCc: Pekka Enberg \u003cpenberg@cs.helsinki.fi\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "8da3430d8a7f885c2bf65121181d76c9d290a86e", "tree": "7c5b181f1aaafba569f8c8b7de9cded5dfa9164c", "parents": [ "6310984694c8204ad16a2414cd58808fae68e02b" ], "author": { "name": "Eric Dumazet", "email": "dada1@cosmosbay.com", "time": "Sun May 06 14:49:29 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Mon May 07 12:12:53 2007 -0700" }, "message": "slab: NUMA kmem_cache diet\n\nSome NUMA machines have a big MAX_NUMNODES (possibly 1024), but fewer\npossible nodes. This patch dynamically sizes the \u0027struct kmem_cache\u0027 to\nallocate only needed space.\n\nI moved nodelists[] field at the end of struct kmem_cache, and use the\nfollowing computation in kmem_cache_init()\n\ncache_cache.buffer_size \u003d offsetof(struct kmem_cache, nodelists) +\n nr_node_ids * sizeof(struct kmem_list3 *);\n\nOn my two nodes x86_64 machine, kmem_cache.obj_size is now 192 instead of 704\n(This is because on x86_64, MAX_NUMNODES is 64)\n\nOn bigger NUMA setups, this might reduce the gfporder of \"cache_cache\"\n\nSigned-off-by: Eric Dumazet \u003cdada1@cosmosbay.com\u003e\nCc: Pekka Enberg \u003cpenberg@cs.helsinki.fi\u003e\nCc: Andy Whitcroft \u003capw@shadowen.org\u003e\nCc: Christoph Lameter \u003cclameter@engr.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": "6310984694c8204ad16a2414cd58808fae68e02b", "tree": "9579700c6b8b99e873462018cf536c00ab76dfb6", "parents": [ "364fbb29a0105863d76a1f7bbc01783a4af30a75" ], "author": { "name": "Eric Dumazet", "email": "dada1@cosmosbay.com", "time": "Sun May 06 14:49:28 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Mon May 07 12:12:53 2007 -0700" }, "message": "SLAB: don\u0027t allocate empty shared caches\n\nWe can avoid allocating empty shared caches and avoid unecessary check of\ncache-\u003elimit. We save some memory. We avoid bringing into CPU cache\nunecessary cache lines.\n\nAll accesses to l3-\u003eshared are already checking NULL pointers so this patch is\nsafe.\n\nSigned-off-by: Eric Dumazet \u003cdada1@cosmosbay.com\u003e\nAcked-by: Pekka Enberg \u003cpenberg@cs.helsinki.fi\u003e\nCc: Christoph Lameter \u003cclameter@engr.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": "364fbb29a0105863d76a1f7bbc01783a4af30a75", "tree": "065828ff023a95daa3b60abbb166e71f10336a64", "parents": [ "6ce745ed39d35f9d547d00d406db2be7c6c175b3" ], "author": { "name": "Eric Dumazet", "email": "dada1@cosmosbay.com", "time": "Sun May 06 14:49:27 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Mon May 07 12:12:52 2007 -0700" }, "message": "SLAB: use num_possible_cpus() in enable_cpucache()\n\nThe existing comment in mm/slab.c is *perfect*, so I reproduce it :\n\n /*\n * CPU bound tasks (e.g. network routing) can exhibit cpu bound\n * allocation behaviour: Most allocs on one cpu, most free operations\n * on another cpu. For these cases, an efficient object passing between\n * cpus is necessary. This is provided by a shared array. The array\n * replaces Bonwick\u0027s magazine layer.\n * On uniprocessor, it\u0027s functionally equivalent (but less efficient)\n * to a larger limit. Thus disabled by default.\n */\n\nAs most shiped linux kernels are now compiled with CONFIG_SMP, there is no way\na preprocessor #if can detect if the machine is UP or SMP. Better to use\nnum_possible_cpus().\n\nThis means on UP we allocate a \u0027size\u003d0 shared array\u0027, to be more efficient.\n\nAnother patch can later avoid the allocations of \u0027empty shared arrays\u0027, to\nsave some memory.\n\nSigned-off-by: Eric Dumazet \u003cdada1@cosmosbay.com\u003e\nAcked-by: Pekka Enberg \u003cpenberg@cs.helsinki.fi\u003e\nAcked-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": "714b8171af9c930a59a0da8f6fe50518e70ab035", "tree": "b63f21c4efd165637c938267d7e542df18d93c99", "parents": [ "5f22df00a009e3f86301366c0ecddb63ebd22af9" ], "author": { "name": "Pekka Enberg", "email": "penberg@cs.helsinki.fi", "time": "Sun May 06 14:49:03 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Mon May 07 12:12:51 2007 -0700" }, "message": "slab: ensure cache_alloc_refill terminates\n\nIf slab-\u003einuse is corrupted, cache_alloc_refill can enter an infinite\nloop as detailed by Michael Richardson in the following post:\n\u003chttp://lkml.org/lkml/2007/2/16/292\u003e. This adds a BUG_ON to catch\nthose cases.\n\nCc: Michael Richardson \u003cmcr@sandelman.ca\u003e\nAcked-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nSigned-off-by: Pekka Enberg \u003cpenberg@cs.helsinki.fi\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "fd76bab2fa6d8f3ef6b326a4c6ae442fa21d30a4", "tree": "66f310ab9d7cdadfb79486700f1e01df7923ec14", "parents": [ "e3ebadd95cb621e2c7436f3d3646447ac9d5c16d" ], "author": { "name": "Pekka Enberg", "email": "penberg@cs.helsinki.fi", "time": "Sun May 06 14:48:40 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Mon May 07 12:12:50 2007 -0700" }, "message": "slab: introduce krealloc\n\nThis introduce krealloc() that reallocates memory while keeping the contents\nunchanged. The allocator avoids reallocation if the new size fits the\ncurrently used cache. I also added a simple non-optimized version for\nmm/slob.c for compatibility.\n\n[akpm@linux-foundation.org: fix warnings]\nAcked-by: Josef Sipek \u003cjsipek@fsl.cs.sunysb.edu\u003e\nAcked-by: Matt Mackall \u003cmpm@selenic.com\u003e\nAcked-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nSigned-off-by: Pekka Enberg \u003cpenberg@cs.helsinki.fi\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "62918a036148230ba1ad175dc8a0952e3752ac57", "tree": "bc58159f2498c1b29e7a46a3e8f1bb1751a0ab59", "parents": [ "57a4f91ae5571edd7c0428285d8df16bb8bf5f40" ], "author": { "name": "Siddha, Suresh B", "email": "suresh.b.siddha@intel.com", "time": "Wed May 02 19:27:18 2007 +0200" }, "committer": { "name": "Andi Kleen", "email": "andi@basil.nowhere.org", "time": "Wed May 02 19:27:18 2007 +0200" }, "message": "[PATCH] x86-64: skip cache_free_alien() on non NUMA\n\nSet use_alien_caches to 0 on non NUMA platforms. And avoid calling the\ncache_free_alien() when use_alien_caches is not set. This will avoid the\ncache miss that happens while dereferencing slabp to get nodeid.\n\nSigned-off-by: Suresh Siddha \u003csuresh.b.siddha@intel.com\u003e\nSigned-off-by: Andi Kleen \u003cak@suse.de\u003e\nCc: Andi Kleen \u003candi@firstfloor.org\u003e\nCc: Eric Dumazet \u003cdada1@cosmosbay.com\u003e\nCc: David Rientjes \u003crientjes@google.com\u003e\nCc: Christoph Lameter \u003cclameter@engr.sgi.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\n" }, { "commit": "e94a40c508dbdce872c79a13b35830c050d71e23", "tree": "41803c452557e905667a8da87901ce1cc843e95c", "parents": [ "bb4899dbef2650288d20251a736243472f050d8b" ], "author": { "name": "David Howells", "email": "dhowells@redhat.com", "time": "Mon Apr 02 23:46:28 2007 +0100" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Wed Apr 04 08:51:52 2007 -0700" }, "message": "[PATCH] SLAB: Mention slab name when listing corrupt objects\n\nMention the slab name when listing corrupt objects. Although the function\nthat released the memory is mentioned, that is frequently ambiguous as such\nfunctions often release several pieces of memory.\n\nSigned-off-by: David Howells \u003cdhowells@redhat.com\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "05fb6bf0b29552b64dc86f405a484de2514e0ac2", "tree": "cd3306512f98f73f7e846fc55b6e56aed4bfea61", "parents": [ "328d24403d6a6b856722facd39d7b6ccb429353b" ], "author": { "name": "Randy Dunlap", "email": "randy.dunlap@oracle.com", "time": "Wed Feb 28 20:12:13 2007 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Thu Mar 01 14:53:37 2007 -0800" }, "message": "[PATCH] kernel-doc fixes for 2.6.20-git15 (non-drivers)\n\nFix kernel-doc warnings in 2.6.20-git15 (lib/, mm/, kernel/, include/).\n\nSigned-off-by: Randy Dunlap \u003crandy.dunlap@oracle.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "8ef8286689c6b5bc76212437b85bdd2ba749ee44", "tree": "9ef088691bd06699adc6c7875bc1b2e6e96ce066", "parents": [ "53b8a315b76a3f3c70a5644976c0095460eb13d8" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Tue Feb 20 13:57:52 2007 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Feb 20 17:10:13 2007 -0800" }, "message": "[PATCH] slab: reduce size of alien cache to cover only possible nodes\n\nThe alien cache is a per cpu per node array allocated for every slab on the\nsystem. Currently we size this array for all nodes that the kernel does\nsupport. For IA64 this is 1024 nodes. So we allocate an array with 1024\nobjects even if we only boot a system with 4 nodes.\n\nThis patch uses \"nr_node_ids\" to determine the number of possible nodes\nsupported by a hardware configuration and only allocates an alien cache\nsized for possible nodes.\n\nThe initialization of nr_node_ids occurred too late relative to the bootstrap\nof the slab allocator and so I moved the setup_nr_node_ids() into\nfree_area_init_nodes().\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": "72fd4a35a824331d7a0f4168d7576502d95d34b3", "tree": "be27880bc36b7f62e8044a88b8744a35c5317714", "parents": [ "262086cf5b5343c2b81c97b1c606058e921859df" ], "author": { "name": "Robert P. J. Day", "email": "rpjday@mindspring.com", "time": "Sat Feb 10 01:45:59 2007 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Sun Feb 11 10:51:32 2007 -0800" }, "message": "[PATCH] Numerous fixes to kernel-doc info in source files.\n\nA variety of (mostly) innocuous fixes to the embedded kernel-doc content in\nsource files, including:\n\n * make multi-line initial descriptions single line\n * denote some function names, constants and structs as such\n * change erroneous opening \u0027/*\u0027 to \u0027/**\u0027 in a few places\n * reword some text for clarity\n\nSigned-off-by: Robert P. J. Day \u003crpjday@mindspring.com\u003e\nCc: \"Randy.Dunlap\" \u003crdunlap@xenotime.net\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "898552c9d807fe59f3ecaf9c300c109358375c12", "tree": "74b49d1c49a18518f298bc25fc0bb686bd2b2a64", "parents": [ "0c12b51712ced2c0d89a8ec3d546ed810f86d33e" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Sat Feb 10 01:44:57 2007 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Sun Feb 11 10:51:26 2007 -0800" }, "message": "[PATCH] lockdep: also check for freed locks in kmem_cache_free()\n\nkmem_cache_free() was missing the check for freeing held locks.\n\nSigned-off-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": "4b51d66989218aad731a721b5b28c79bf5388c09", "tree": "8ff7acbd219f699c20c2f1fd201ffb3db5a64062", "parents": [ "66701b1499a3ff11882c8c4aef36e8eac86e17b1" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Sat Feb 10 01:43:10 2007 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Sun Feb 11 10:51:18 2007 -0800" }, "message": "[PATCH] optional ZONE_DMA: optional ZONE_DMA in the VM\n\nMake ZONE_DMA optional in core code.\n\n- ifdef all code for ZONE_DMA and related definitions following the example\n for ZONE_DMA32 and ZONE_HIGHMEM.\n\n- Without ZONE_DMA, ZONE_HIGHMEM and ZONE_DMA32 we get to a ZONES_SHIFT of\n 0.\n\n- Modify the VM statistics to work correctly without a DMA zone.\n\n- Modify slab to not create DMA slabs if there is no ZONE_DMA.\n\n[akpm@osdl.org: cleanup]\n[jdike@addtoit.com: build fix]\n[apw@shadowen.org: Simplify calculation of the number of bits we need for ZONES_SHIFT]\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nCc: Andi Kleen \u003cak@suse.de\u003e\nCc: \"Luck, Tony\" \u003ctony.luck@intel.com\u003e\nCc: Kyle McMartin \u003ckyle@mcmartin.ca\u003e\nCc: Matthew Wilcox \u003cwilly@debian.org\u003e\nCc: James Bottomley \u003cJames.Bottomley@steeleye.com\u003e\nCc: Paul Mundt \u003clethal@linux-sh.org\u003e\nSigned-off-by: Andy Whitcroft \u003capw@shadowen.org\u003e\nSigned-off-by: Jeff Dike \u003cjdike@addtoit.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "7c5cae368a6c44eac0e817ae130301b65ff446dc", "tree": "dccede940e8ef4b341af03a8a0ac9da951e74616", "parents": [ "8c8cc2c10c21943dd3499a2df7aac835093b37f3" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Sat Feb 10 01:42:55 2007 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Sun Feb 11 10:51:17 2007 -0800" }, "message": "[PATCH] slab: use parameter passed to cache_reap to determine pointer to work structure\n\nUse the pointer passed to cache_reap to determine the work pointer and\nconsolidate exit paths.\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": "8c8cc2c10c21943dd3499a2df7aac835093b37f3", "tree": "70ca672d5066c87e5f85e68e4e2589473ba1aa51", "parents": [ "6e40e73097a5e4ad1b9f92fa21757343fdd6a682" ], "author": { "name": "Pekka Enberg", "email": "penberg@cs.helsinki.fi", "time": "Sat Feb 10 01:42:53 2007 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Sun Feb 11 10:51:16 2007 -0800" }, "message": "[PATCH] slab: cache alloc cleanups\n\nClean up __cache_alloc and __cache_alloc_node functions a bit. We no\nlonger need to do NUMA_BUILD tricks and the UMA allocation path is much\nsimpler. No functional changes in this patch.\n\nNote: saves few kernel text bytes on x86 NUMA build due to using gotos in\n__cache_alloc_node() and moving __GFP_THISNODE check in to\nfallback_alloc().\n\nCc: Andy Whitcroft \u003capw@shadowen.org\u003e\nCc: Christoph Hellwig \u003chch@lst.de\u003e\nCc: Manfred Spraul \u003cmanfred@colorfullife.com\u003e\nAcked-by: Christoph Lameter \u003cchristoph@lameter.com\u003e\nCc: Paul Jackson \u003cpj@sgi.com\u003e\nSigned-off-by: Pekka Enberg \u003cpenberg@cs.helsinki.fi\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "6e40e73097a5e4ad1b9f92fa21757343fdd6a682", "tree": "63212795f46640de68a75cf10cfc96d5e9e0d365", "parents": [ "66efc5a7e3061c3597ac43a8bb1026488d57e66b" ], "author": { "name": "Pekka Enberg", "email": "penberg@cs.helsinki.fi", "time": "Sat Feb 10 01:42:52 2007 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Sun Feb 11 10:51:16 2007 -0800" }, "message": "[PATCH] slab: remove broken PageSlab check from kfree_debugcheck\n\nThe PageSlab debug check in kfree_debugcheck() is broken for compound\npages. It is also redundant as we already do BUG_ON for non-slab pages in\npage_get_cache() and page_get_slab() which are always called before we free\nany actual objects.\n\nSigned-off-by: Pekka Enberg \u003cpenberg@cs.helsinki.fi\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "b6a60451813bad6a9f57cb159004c3b3e12a1cd3", "tree": "643ae50ba5a1745950eac093e86072473a3d10ca", "parents": [ "be6aab0e9fa6d3c6d75aa1e38ac972d8b4ee82b8" ], "author": { "name": "Hugh Dickins", "email": "hugh@veritas.com", "time": "Fri Jan 05 16:36:36 2007 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.osdl.org", "time": "Fri Jan 05 23:55:23 2007 -0800" }, "message": "[PATCH] fix BUG_ON(!PageSlab) from fallback_alloc\n\npdflush hit the BUG_ON(!PageSlab(page)) in kmem_freepages called from\nfallback_alloc: cache_grow already freed those pages when alloc_slabmgmt\nfailed. But it wouldn\u0027t have freed them if __GFP_NO_GROW, so make sure\nfallback_alloc doesn\u0027t waste its time on that case.\n\nSigned-off-by: Hugh Dickins \u003chugh@veritas.com\u003e\nAcked-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nAcked-by: Pekka J Enberg \u003cpenberg@cs.helsinki.fi\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "af9997e426f9ddfe7a84cb4cd3c7ff938fabd41a", "tree": "8bbb991c584b1a555b35950900455517f5e55ee9", "parents": [ "b7f869a2847dfe6f9b0835ca1b24e73bed926d7d" ], "author": { "name": "Randy Dunlap", "email": "randy.dunlap@oracle.com", "time": "Fri Dec 22 01:06:52 2006 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.osdl.org", "time": "Fri Dec 22 08:55:47 2006 -0800" }, "message": "[PATCH] fix kernel-doc warnings in 2.6.20-rc1\n\nFix kernel-doc warnings in 2.6.20-rc1.\n\nSigned-off-by: Randy Dunlap \u003crandy.dunlap@oracle.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "b7f869a2847dfe6f9b0835ca1b24e73bed926d7d", "tree": "1bbbc406453ca08385e0199515ad6933c6e30f74", "parents": [ "533ffc289db9f44c0633d3a7b87243b5740b02b2" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Fri Dec 22 01:06:44 2006 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.osdl.org", "time": "Fri Dec 22 08:55:47 2006 -0800" }, "message": "[PATCH] slab: fix kmem_ptr_validate definition\n\nThe declaration of kmem_ptr_validate in slab.h does not match the\none in slab.c. Remove the fastcall attribute (this is the only use in\nslab.c).\n\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "6a2d7a955d8de6cb19ed9cd194b3c83008a22c32", "tree": "dc440341412a45a7c1f363dcaa1505fe711eadec", "parents": [ "02a0e53d8227aff5e62e0433f82c12c1c2805fd6" ], "author": { "name": "Eric Dumazet", "email": "dada1@cosmosbay.com", "time": "Wed Dec 13 00:34:27 2006 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.osdl.org", "time": "Wed Dec 13 09:05:49 2006 -0800" }, "message": "[PATCH] SLAB: use a multiply instead of a divide in obj_to_index()\n\nWhen some objects are allocated by one CPU but freed by another CPU we can\nconsume lot of cycles doing divides in obj_to_index().\n\n(Typical load on a dual processor machine where network interrupts are\nhandled by one particular CPU (allocating skbufs), and the other CPU is\nrunning the application (consuming and freeing skbufs))\n\nHere on one production server (dual-core AMD Opteron 285), I noticed this\ndivide took 1.20 % of CPU_CLK_UNHALTED events in kernel. But Opteron are\nquite modern cpus and the divide is much more expensive on oldest\narchitectures :\n\nOn a 200 MHz sparcv9 machine, the division takes 64 cycles instead of 1\ncycle for a multiply.\n\nDoing some math, we can use a reciprocal multiplication instead of a divide.\n\nIf we want to compute V \u003d (A / B) (A and B being u32 quantities)\nwe can instead use :\n\nV \u003d ((u64)A * RECIPROCAL(B)) \u003e\u003e 32 ;\n\nwhere RECIPROCAL(B) is precalculated to ((1LL \u003c\u003c 32) + (B - 1)) / B\n\nNote :\n\nI wrote pure C code for clarity. gcc output for i386 is not optimal but\nacceptable :\n\nmull 0x14(%ebx)\nmov %edx,%eax // part of the \u003e\u003e 32\nxor %edx,%edx // useless\nmov %eax,(%esp) // could be avoided\nmov %edx,0x4(%esp) // useless\nmov (%esp),%ebx\n\n[akpm@osdl.org: small cleanups]\nSigned-off-by: Eric Dumazet \u003cdada1@cosmosbay.com\u003e\nCc: Christoph Lameter \u003cclameter@sgi.com\u003e\nCc: David Miller \u003cdavem@davemloft.net\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "02a0e53d8227aff5e62e0433f82c12c1c2805fd6", "tree": "fe32435308e5f1afe8bd12357bd8c5ff3b4133c7", "parents": [ "55935a34a428a1497e3b37982e2782c09c6f914d" ], "author": { "name": "Paul Jackson", "email": "pj@sgi.com", "time": "Wed Dec 13 00:34:25 2006 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.osdl.org", "time": "Wed Dec 13 09:05:49 2006 -0800" }, "message": "[PATCH] cpuset: rework cpuset_zone_allowed api\n\nElaborate the API for calling cpuset_zone_allowed(), so that users have to\nexplicitly choose between the two variants:\n\n cpuset_zone_allowed_hardwall()\n cpuset_zone_allowed_softwall()\n\nUntil now, whether or not you got the hardwall flavor depended solely on\nwhether or not you or\u0027d in the __GFP_HARDWALL gfp flag to the gfp_mask\nargument.\n\nIf you didn\u0027t specify __GFP_HARDWALL, you implicitly got the softwall\nversion.\n\nUnfortunately, this meant that users would end up with the softwall version\nwithout thinking about it. Since only the softwall version might sleep,\nthis led to bugs with possible sleeping in interrupt context on more than\none occassion.\n\nThe hardwall version requires that the current tasks mems_allowed allows\nthe node of the specified zone (or that you\u0027re in interrupt or that\n__GFP_THISNODE is set or that you\u0027re on a one cpuset system.)\n\nThe softwall version, depending on the gfp_mask, might allow a node if it\nwas allowed in the nearest enclusing cpuset marked mem_exclusive (which\nrequires taking the cpuset lock \u0027callback_mutex\u0027 to evaluate.)\n\nThis patch removes the cpuset_zone_allowed() call, and forces the caller to\nexplicitly choose between the hardwall and the softwall case.\n\nIf the caller wants the gfp_mask to determine this choice, they should (1)\nbe sure they can sleep or that __GFP_HARDWALL is set, and (2) invoke the\ncpuset_zone_allowed_softwall() routine.\n\nThis adds another 100 or 200 bytes to the kernel text space, due to the few\nlines of nearly duplicate code at the top of both cpuset_zone_allowed_*\nroutines. It should save a few instructions executed for the calls that\nturned into calls of cpuset_zone_allowed_hardwall, thanks to not having to\nset (before the call) then check (within the call) the __GFP_HARDWALL flag.\n\nFor the most critical call, from get_page_from_freelist(), the same\ninstructions are executed as before -- the old cpuset_zone_allowed()\nroutine it used to call is the same code as the\ncpuset_zone_allowed_softwall() routine that it calls now.\n\nNot a perfect win, but seems worth it, to reduce this chance of hitting a\nsleeping with irq off complaint again.\n\nSigned-off-by: Paul Jackson \u003cpj@sgi.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "55935a34a428a1497e3b37982e2782c09c6f914d", "tree": "270e68db0a0c8819986fd5150d942812a02d8f42", "parents": [ "2e892f43ccb602e8ffad73396a1000f2040c9e0b" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Wed Dec 13 00:34:24 2006 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.osdl.org", "time": "Wed Dec 13 09:05:49 2006 -0800" }, "message": "[PATCH] More slab.h cleanups\n\nMore cleanups for slab.h\n\n1. Remove tabs from weird locations as suggested by Pekka\n\n2. Drop the check for NUMA and SLAB_DEBUG from the fallback section\n as suggested by Pekka.\n\n3. Uses static inline for the fallback defs as also suggested by Pekka.\n\n4. Make kmem_ptr_valid take a const * argument.\n\n5. Separate the NUMA fallback definitions from the kmalloc_track fallback\n definitions.\n\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nCc: Pekka Enberg \u003cpenberg@cs.helsinki.fi\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "dd47ea755693228bf842c779e8afdfa47efb20a3", "tree": "3dbaea0064765ff7dbc82e5bf0af73aba15dd6b2", "parents": [ "6a8ba9d12150461acc91bd3c9124eac19e853218" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Wed Dec 13 00:34:11 2006 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.osdl.org", "time": "Wed Dec 13 09:05:48 2006 -0800" }, "message": "[PATCH] slab: fix sleeping in atomic bug\n\nFallback_alloc() does not do the check for GFP_WAIT as done in\ncache_grow(). Thus interrupts are disabled when we call kmem_getpages()\nwhich results in the failure.\n\nDuplicate the handling of GFP_WAIT in cache_grow().\n\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nCc: Jay Cliburn \u003cjacliburn@bellsouth.net\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "2b2842146cb4105877c2be51d3857ec61ebd4ff9", "tree": "526e19452cecf8a3669713bc35afcfa4e23bb296", "parents": [ "44d306e1508fef6fa7a6eb15a1aba86ef68389a6" ], "author": { "name": "Arjan van de Ven", "email": "arjan@linux.intel.com", "time": "Sun Dec 10 02:21:28 2006 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.osdl.org", "time": "Sun Dec 10 09:57:22 2006 -0800" }, "message": "[PATCH] user of the jiffies rounding patch: Slab\n\nThis patch introduces users of the round_jiffies() function in the slab code.\n\nThe slab code has a few \"run every second\" timers for background work; these\nare obviously not timing critical as long as they happen roughly at the right\nfrequency.\n\nSigned-off-by: Arjan van de Ven \u003carjan@linux.intel.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "6b1b60f41eef3ba7b188fd72f1d6de478aafd93c", "tree": "96be18f573ef01f65547e8d74f0b4d7ce52f2c11", "parents": [ "f1729c28a37e4f11ea5d9f468ab26adadb1aadab" ], "author": { "name": "Don Mullis", "email": "dwm@meer.net", "time": "Fri Dec 08 02:39:53 2006 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.osdl.org", "time": "Fri Dec 08 08:29:03 2006 -0800" }, "message": "[PATCH] fault-injection: defaults likely to please a new user\n\nAssign defaults most likely to please a new user:\n 1) generate some logging output\n (verbose\u003d2)\n 2) avoid injecting failures likely to lock up UI\n (ignore_gfp_wait\u003d1, ignore_gfp_highmem\u003d1)\n\nSigned-off-by: Don Mullis \u003cdwm@meer.net\u003e\nCc: Akinobu Mita \u003cakinobu.mita@gmail.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "8a8b6502fb669c3a0638a08955442814cedc86b1", "tree": "2e49652f904eb821f2fa7ae8cab0dd9b756772d9", "parents": [ "6ff1cb355e628f8fc55fa2d01e269e5e1bbc2fe9" ], "author": { "name": "Akinobu Mita", "email": "akinobu.mita@gmail.com", "time": "Fri Dec 08 02:39:44 2006 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.osdl.org", "time": "Fri Dec 08 08:29:02 2006 -0800" }, "message": "[PATCH] fault-injection capability for kmalloc\n\nThis patch provides fault-injection capability for kmalloc.\n\nBoot option:\n\nfailslab\u003d\u003cinterval\u003e,\u003cprobability\u003e,\u003cspace\u003e,\u003ctimes\u003e\n\n\t\u003cinterval\u003e -- specifies the interval of failures.\n\n\t\u003cprobability\u003e -- specifies how often it should fail in percent.\n\n\t\u003cspace\u003e -- specifies the size of free space where memory can be\n\t\t allocated safely in bytes.\n\n\t\u003ctimes\u003e -- specifies how many times failures may happen at most.\n\nDebugfs:\n\n/debug/failslab/interval\n/debug/failslab/probability\n/debug/failslab/specifies\n/debug/failslab/times\n/debug/failslab/ignore-gfp-highmem\n/debug/failslab/ignore-gfp-wait\n\nExample:\n\n\tfailslab\u003d10,100,0,-1\n\nslab allocation (kmalloc(), kmem_cache_alloc(),..) fails once per 10 times.\n\nCc: Pekka Enberg \u003cpenberg@cs.helsinki.fi\u003e\nSigned-off-by: Akinobu Mita \u003cakinobu.mita@gmail.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "b8b50b6519afa9891b753c4fffa89d89e04df66a", "tree": "02aff736f77241445d588817c0ea629e69a0b69a", "parents": [ "01a732eb22dab153732b94962467eaabb1fd3797" ], "author": { "name": "Paul Jackson", "email": "pj@sgi.com", "time": "Fri Dec 08 02:35:53 2006 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.osdl.org", "time": "Fri Dec 08 08:28:37 2006 -0800" }, "message": "[PATCH] mm: fallback_alloc cpuset_zone_allowed irq fix\n\nfallback_alloc() could end up calling cpuset_zone_allowed() with interrupts\ndisabled (by code in kmem_cache_alloc_node()), but without __GFP_HARDWALL\nset, leading to a possible call of a sleeping function with interrupts\ndisabled.\n\nThis results in the BUG report:\n\n BUG: sleeping function called from invalid context at kernel/cpuset.c:1520\nin_atomic():0, irqs_disabled():1\n\nThanks to Paul Menage for catching this one.\n\nSigned-off-by: Paul Jackson \u003cpj@sgi.com\u003e\nCc: Paul Menage \u003cmenage@google.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "15ad7cdcfd76450d4beebc789ec646664238184d", "tree": "279d05a76ae0906c23ee2de8c5684d95d9886ad3", "parents": [ "4a08a9f68168e547c2baf100020e9b96cae5fbd1" ], "author": { "name": "Helge Deller", "email": "deller@gmx.de", "time": "Wed Dec 06 20:40:36 2006 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.osdl.org", "time": "Thu Dec 07 08:39:46 2006 -0800" }, "message": "[PATCH] struct seq_operations and struct file_operations constification\n\n - move some file_operations structs into the .rodata section\n\n - move static strings from policy_types[] array into the .rodata section\n\n - fix generic seq_operations usages, so that those structs may be defined\n as \"const\" as well\n\n[akpm@osdl.org: couple of fixes]\nSigned-off-by: Helge Deller \u003cdeller@gmx.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "138ae6631a3d6f86851dd53686fa88295d1398bd", "tree": "72edbfcfdc0c5af53a9bc9ef5134ae8d90f13e88", "parents": [ "20aa7b21b1cbd1aa3fbf5fc14da5f7484a61a824" ], "author": { "name": "Andrew Morton", "email": "akpm@osdl.org", "time": "Wed Dec 06 20:36:41 2006 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.osdl.org", "time": "Thu Dec 07 08:39:34 2006 -0800" }, "message": "[PATCH] slab: use probe_kernel_address()\n\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" } ], "next": "3c517a6132098ca37e122a2980fc64a9e798b0d7" }