)]}' { "log": [ { "commit": "6fd6b17c6d9713f56b5f20903ec3e00fa6cc435e", "tree": "f5dd7477e48fc5a1184d3472548291397be9c2b5", "parents": [ "f56df2f4db6e4af87fb8e941cff69f4501a111df" ], "author": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Wed Jan 31 16:43:36 2007 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Wed Jan 31 16:46:40 2007 -0800" }, "message": "Revert \"[PATCH] mm: micro optimise zone_watermark_ok\"\n\nThis reverts commit e80ee884ae0e3794ef2b65a18a767d502ad712ee.\n\nPawel Sikora had a boot-time oops due to it - because the sign change\ninvalidates the following comparisons, since \u0027free_pages\u0027 can be\nnegative.\n\nThe micro-optimization just isn\u0027t worth it.\n\nBisected-by: Pawel Sikora \u003cpluto@agmk.net\u003e\nAcked-by: Andrew Morton \u003cakpm@osdl.org\u003e\nCc: Nick Piggin \u003cnickpiggin@yahoo.com.au\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "a2f3aa02576632cdb60bd3de1f4bf55e9ac65604", "tree": "2b9b73675de73866fbd219fab5bf2d804e6817b1", "parents": [ "47a4d5be7c50b2e9b905abbe2b97dc87051c5a44" ], "author": { "name": "Dave Hansen", "email": "haveblue@us.ibm.com", "time": "Wed Jan 10 23:15:30 2007 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.osdl.org", "time": "Thu Jan 11 18:18:20 2007 -0800" }, "message": "[PATCH] Fix sparsemem on Cell\n\nFix an oops experienced on the Cell architecture when init-time functions,\nearly_*(), are called at runtime. It alters the call paths to make sure\nthat the callers explicitly say whether the call is being made on behalf of\na hotplug even, or happening at boot-time.\n\nIt has been compile tested on ppc64, ia64, s390, i386 and x86_64.\n\nAcked-by: Arnd Bergmann \u003carndb@de.ibm.com\u003e\nSigned-off-by: Dave Hansen \u003chaveblue@us.ibm.com\u003e\nCc: Yasunori Goto \u003cy-goto@jp.fujitsu.com\u003e\nAcked-by: Andy Whitcroft \u003capw@shadowen.org\u003e\nCc: Christoph Lameter \u003cclameter@engr.sgi.com\u003e\nCc: Martin Schwidefsky \u003cschwidefsky@de.ibm.com\u003e\nAcked-by: Heiko Carstens \u003cheiko.carstens@de.ibm.com\u003e\nCc: Benjamin Herrenschmidt \u003cbenh@kernel.crashing.org\u003e\nCc: Paul Mackerras \u003cpaulus@samba.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "f2e12bb272f2544d1504f982270e90ae3dcc4ff2", "tree": "68e8d10521fdcf1d7f4df411d87809cd1110b929", "parents": [ "6929da4427b4335365dd51ab0b7dd2a0393656f0" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Fri Jan 05 16:37:02 2007 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.osdl.org", "time": "Fri Jan 05 23:55:29 2007 -0800" }, "message": "[PATCH] Check for populated zone in __drain_pages\n\nBoth process_zones() and drain_node_pages() check for populated zones\nbefore touching pagesets. However, __drain_pages does not do so,\n\nThis may result in a NULL pointer dereference for pagesets in unpopulated\nzones if a NUMA setup is combined with cpu hotplug.\n\nInitially the unpopulated zone has the pcp pointers pointing to the boot\npagesets. Since the zone is not populated the boot pageset pointers will\nnot be changed during page allocator and slab bootstrap.\n\nIf a cpu is later brought down (first call to __drain_pages()) then the pcp\npointers for cpus in unpopulated zones are set to NULL since __drain_pages\ndoes not first check for an unpopulated zone.\n\nIf the cpu is then brought up again then we call process_zones() which will\nignore the unpopulated zone. So the pageset pointers will still be NULL.\n\nIf the cpu is then again brought down then __drain_pages will attempt to\ndrain pages by following the NULL pageset pointer for unpopulated zones.\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": "9ab37b8f21b4dfe256d736c13738d20c88a1f3ad", "tree": "11b7b33b1e88ce19175492f25cfc71add2b3dcd6", "parents": [ "dd0ec16fa6cf2498b831663a543e1b67fce6e155" ], "author": { "name": "Paul Mundt", "email": "lethal@linux-sh.org", "time": "Fri Jan 05 16:36:30 2007 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.osdl.org", "time": "Fri Jan 05 23:55:23 2007 -0800" }, "message": "[PATCH] Sanely size hash tables when using large base pages\n\nAt the moment the inode/dentry cache hash tables (common by way of\nalloc_large_system_hash()) are incorrectly sized by their respective\ndetection logic when we attempt to use large base pages on systems with\nlittle memory.\n\nThis results in odd behaviour when using a 64kB PAGE_SIZE, such as:\n\nDentry cache hash table entries: 8192 (order: -1, 32768 bytes)\nInode-cache hash table entries: 4096 (order: -2, 16384 bytes)\n\nThe mount cache hash table is seemingly the only one that gets this right\nby directly taking PAGE_SIZE in to account.\n\nThe following patch attempts to catch the bogus values and round it up to\nat least 0-order.\n\nSigned-off-by: Paul Mundt \u003clethal@linux-sh.org\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": "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": "933e312e73f8fc39652bd4d216a5393cc3a014b9", "tree": "a2aacc2a098c3c95fe5a94fef1a2cc9751bee79b", "parents": [ "8a8b6502fb669c3a0638a08955442814cedc86b1" ], "author": { "name": "Akinobu Mita", "email": "akinobu.mita@gmail.com", "time": "Fri Dec 08 02:39:45 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 alloc_pages()\n\nThis patch provides fault-injection capability for alloc_pages()\n\nBoot option:\n\nfail_page_alloc\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 pages.\n\n\t\u003ctimes\u003e -- specifies how many times failures may happen at most.\n\nDebugfs:\n\n/debug/fail_page_alloc/interval\n/debug/fail_page_alloc/probability\n/debug/fail_page_alloc/specifies\n/debug/fail_page_alloc/times\n/debug/fail_page_alloc/ignore-gfp-highmem\n/debug/fail_page_alloc/ignore-gfp-wait\n\nExample:\n\n\tfail_page_alloc\u003d10,100,0,-1\n\nThe page allocation (alloc_pages(), ...) fails once per 10 times.\n\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": "f0d1b0b30d250a07627ad8b9fbbb5c7cc08422e8", "tree": "0aa5379150574374351fb92af7881a48dbfcf2ce", "parents": [ "b3d7ae5f47a58a9f7b152deeaf7daa1fc558a8f1" ], "author": { "name": "David Howells", "email": "dhowells@redhat.com", "time": "Fri Dec 08 02:37:49 2006 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.osdl.org", "time": "Fri Dec 08 08:28:51 2006 -0800" }, "message": "[PATCH] LOG2: Implement a general integer log2 facility in the kernel\n\nThis facility provides three entry points:\n\n\tilog2()\t\tLog base 2 of unsigned long\n\tilog2_u32()\tLog base 2 of u32\n\tilog2_u64()\tLog base 2 of u64\n\nThese facilities can either be used inside functions on dynamic data:\n\n\tint do_something(long q)\n\t{\n\t\t...;\n\t\ty \u003d ilog2(x)\n\t\t...;\n\t}\n\nOr can be used to statically initialise global variables with constant values:\n\n\tunsigned n \u003d ilog2(27);\n\nWhen performing static initialisation, the compiler will report \"error:\ninitializer element is not constant\" if asked to take a log of zero or of\nsomething not reducible to a constant. They treat negative numbers as\nunsigned.\n\nWhen not dealing with a constant, they fall back to using fls() which permits\nthem to use arch-specific log calculation instructions - such as BSR on\nx86/x86_64 or SCAN on FRV - if available.\n\n[akpm@osdl.org: MMC fix]\nSigned-off-by: David Howells \u003cdhowells@redhat.com\u003e\nCc: Benjamin Herrenschmidt \u003cbenh@kernel.crashing.org\u003e\nCc: Paul Mackerras \u003cpaulus@samba.org\u003e\nCc: Herbert Xu \u003cherbert@gondor.apana.org.au\u003e\nCc: David Howells \u003cdhowells@redhat.com\u003e\nCc: Wojtek Kaniewski \u003cwojtekka@toxygen.net\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": "02316067852187b8bec781bec07410e91af79627", "tree": "856e3f4610c91a6548bf3bf5c70ecbc0b28a4145", "parents": [ "a38a44c1a93078fc5fadc4ac2df8dea4697069e2" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Wed Dec 06 20:38:17 2006 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.osdl.org", "time": "Thu Dec 07 08:39:39 2006 -0800" }, "message": "[PATCH] hotplug CPU: clean up hotcpu_notifier() use\n\nThere was lots of #ifdef noise in the kernel due to hotcpu_notifier(fn,\nprio) not correctly marking \u0027fn\u0027 as used in the !HOTPLUG_CPU case, and thus\ngenerating compiler warnings of unused symbols, hence forcing people to add\n#ifdefs.\n\nthe compiler can skip truly unused functions just fine:\n\n text data bss dec hex filename\n 1624412 728710 3674856 6027978 5bfaca vmlinux.before\n 1624412 728710 3674856 6027978 5bfaca vmlinux.after\n\n[akpm@osdl.org: topology.c fix]\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "04903664325acb3f199dd8a4b8f1aa437e9fd6b2", "tree": "6da8e4716c1477d578b9d89cd23be703aac8bedc", "parents": [ "93f210dd9e614ddab7ecef0b4c9ba6ad3720d860" ], "author": { "name": "Andrew Morton", "email": "akpm@osdl.org", "time": "Wed Dec 06 20:37:33 2006 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.osdl.org", "time": "Thu Dec 07 08:39:37 2006 -0800" }, "message": "[PATCH] remove HASH_HIGHMEM\n\nIt has no users and it\u0027s doubtful that we\u0027ll need it again.\n\nCc: \"David S. 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": "33f2ef89f8e181486b63fdbdc97c6afa6ca9f34b", "tree": "b90eac24ff367bc628c44eaa51a9f0ea1b69d1a4", "parents": [ "3c517a6132098ca37e122a2980fc64a9e798b0d7" ], "author": { "name": "Andy Whitcroft", "email": "apw@shadowen.org", "time": "Wed Dec 06 20:33:32 2006 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.osdl.org", "time": "Thu Dec 07 08:39:25 2006 -0800" }, "message": "[PATCH] mm: make compound page destructor handling explicit\n\nCurrently we we use the lru head link of the second page of a compound page\nto hold its destructor. This was ok when it was purely an internal\nimplmentation detail. However, hugetlbfs overrides this destructor\nviolating the layering. Abstract this out as explicit calls, also\nintroduce a type for the callback function allowing them to be type\nchecked. For each callback we pre-declare the function, causing a type\nerror on definition rather than on use elsewhere.\n\n[akpm@osdl.org: cleanups]\nSigned-off-by: Andy Whitcroft \u003capw@shadowen.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "952f3b51beb592f3f1de15adcdef802fc086ea91", "tree": "45d9b240230494d3d985400f81f963b67db1e788", "parents": [ "5bcd234d881d83ac0259c6d42d98f134e31c60a8" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Wed Dec 06 20:33:26 2006 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.osdl.org", "time": "Thu Dec 07 08:39:25 2006 -0800" }, "message": "[PATCH] GFP_THISNODE must not trigger global reclaim\n\nThe intent of GFP_THISNODE is to make sure that an allocation occurs on a\nparticular node. If this is not possible then NULL needs to be returned so\nthat the caller can choose what to do next on its own (the slab allocator\ndepends on that).\n\nHowever, GFP_THISNODE currently triggers reclaim before returning a failure\n(GFP_THISNODE means GFP_NORETRY is set). If we have over allocated a node\nthen we will currently do some reclaim before returning NULL. The caller\nmay want memory from other nodes before reclaim should be triggered. (If\nthe caller wants reclaim then he can directly use __GFP_THISNODE instead).\n\nThere is no flag to avoid reclaim in the page allocator and adding yet\nanother GFP_xx flag would be difficult given that we are out of available\nflags.\n\nSo just compare and see if all bits for GFP_THISNODE (__GFP_THISNODE,\n__GFP_NORETRY and __GFP_NOWARN) are set. If so then we return NULL before\nwaking up kswapd.\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": "ce421c799b5bde77aa60776d6fb61036ae0aea11", "tree": "98e0a52cdafdfa28c986991f57854209e68b8226", "parents": [ "5d1854e15ee979f8e27330f0d3ce5e2703afa1dc" ], "author": { "name": "Andy Whitcroft", "email": "apw@shadowen.org", "time": "Wed Dec 06 20:33:08 2006 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.osdl.org", "time": "Thu Dec 07 08:39:23 2006 -0800" }, "message": "[PATCH] mm: cleanup indentation on switch for CPU operations\n\nThese patches introduced new switch statements which are indented contrary\nto the concensus in mm/*.c. Fix them up to match that concensus.\n\n [PATCH] node local per-cpu-pages\n [PATCH] ZVC: Scale thresholds depending on the size of the system\n commit e7c8d5c9955a4d2e88e36b640563f5d6d5aba48a\n commit df9ecaba3f152d1ea79f2a5e0b87505e03f47590\n\nSigned-off-by: Andy Whitcroft \u003capw@shadowen.org\u003e\nCc: Christoph Lameter \u003cclameter@engr.sgi.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "25ba77c141dbcd2602dd0171824d0d72aa023a01", "tree": "153eb9bc567f63d739dcaf8a3caf11c8f48b8379", "parents": [ "bc4ba393c007248f76c05945abb7b7b892cdd1cc" ], "author": { "name": "Andy Whitcroft", "email": "apw@shadowen.org", "time": "Wed Dec 06 20:33:03 2006 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.osdl.org", "time": "Thu Dec 07 08:39:23 2006 -0800" }, "message": "[PATCH] numa node ids are int, page_to_nid and zone_to_nid should return int\n\nNUMA node ids are passed as either int or unsigned int almost exclusivly\npage_to_nid and zone_to_nid both return unsigned long. This is a throw\nback to when page_to_nid was a #define and was thus exposing the real type\nof the page flags field.\n\nIn addition to fixing up the definitions of page_to_nid and zone_to_nid I\naudited the users of these functions identifying the following incorrect\nuses:\n\n1) mm/page_alloc.c show_node() -- printk dumping the node id,\n2) include/asm-ia64/pgalloc.h pgtable_quicklist_free() -- comparison\n against numa_node_id() which returns an int from cpu_to_node(), and\n3) mm/mpolicy.c check_pte_range -- used as an index in node_isset which\n uses bit_set which in generic code takes an int.\n\nSigned-off-by: Andy Whitcroft \u003capw@shadowen.org\u003e\nCc: Christoph Lameter \u003cclameter@engr.sgi.com\u003e\nCc: \"Luck, Tony\" \u003ctony.luck@intel.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "bc4ba393c007248f76c05945abb7b7b892cdd1cc", "tree": "3c2cf7e13ecf991c58ffc00617757fcdeb3d863f", "parents": [ "ebe29738f3934ad6a93c8bd76e30aa5d797a269d" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Wed Dec 06 20:33:02 2006 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.osdl.org", "time": "Thu Dec 07 08:39:23 2006 -0800" }, "message": "[PATCH] drain_node_page(): Drain pages in batch units\n\ndrain_node_pages() currently drains the complete pageset of all pages. If\nthere are a large number of pages in the queues then we may hold off\ninterrupts for too long.\n\nDuplicate the method used in free_hot_cold_page. Only drain pcp-\u003ebatch\npages at one time.\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": "b43a57bb4dae72e8f7232e7c821a8799eda30022", "tree": "4293286b44c8b11bac6a03c4ddfe75aea40aa089", "parents": [ "a3eea484f7a1aadb70ed6665338026a09ad6ce85" ], "author": { "name": "Kirill Korotaev", "email": "dev@openvz.org", "time": "Wed Dec 06 20:32:27 2006 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.osdl.org", "time": "Thu Dec 07 08:39:22 2006 -0800" }, "message": "[PATCH] OOM can panic due to processes stuck in __alloc_pages()\n\nOOM can panic due to the processes stuck in __alloc_pages() doing infinite\nrebalance loop while no memory can be reclaimed. OOM killer tries to kill\nsome processes, but unfortunetaly, rebalance label was moved by someone\nbelow the TIF_MEMDIE check, so buddy allocator doesn\u0027t see that process is\nOOM-killed and it can simply fail the allocation :/\n\nObserved in reality on RHEL4(2.6.9)+OpenVZ kernel when a user doing some\nmemory allocation tricks triggered OOM panic.\n\nSigned-off-by: Denis Lunev \u003cden@sw.ru\u003e\nSigned-off-by: Kirill Korotaev \u003cdev@openvz.org\u003e\nCc: Nick Piggin \u003cnickpiggin@yahoo.com.au\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "cc102509074bba0316f2b5deebd7ef4447da295e", "tree": "44ac5fc0c0dd7a24e8925e680a03361f4722a5a6", "parents": [ "7602bdf2fd14a40dd9b104e516fdc05e1bd17952" ], "author": { "name": "Nick Piggin", "email": "npiggin@suse.de", "time": "Wed Dec 06 20:32:00 2006 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.osdl.org", "time": "Thu Dec 07 08:39:21 2006 -0800" }, "message": "[PATCH] mm: add arch_alloc_page\n\nAdd an arch_alloc_page to match arch_free_page.\n\nSigned-off-by: Nick Piggin \u003cnpiggin@suse.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "9276b1bc96a132f4068fdee00983c532f43d3a26", "tree": "04d64444cf6558632cfc7514b5437578b5e616af", "parents": [ "89689ae7f95995723fbcd5c116c47933a3bb8b13" ], "author": { "name": "Paul Jackson", "email": "pj@sgi.com", "time": "Wed Dec 06 20:31:48 2006 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.osdl.org", "time": "Thu Dec 07 08:39:20 2006 -0800" }, "message": "[PATCH] memory page_alloc zonelist caching speedup\n\nOptimize the critical zonelist scanning for free pages in the kernel memory\nallocator by caching the zones that were found to be full recently, and\nskipping them.\n\nRemembers the zones in a zonelist that were short of free memory in the\nlast second. And it stashes a zone-to-node table in the zonelist struct,\nto optimize that conversion (minimize its cache footprint.)\n\nRecent changes:\n\n This differs in a significant way from a similar patch that I\n posted a week ago. Now, instead of having a nodemask_t of\n recently full nodes, I have a bitmask of recently full zones.\n This solves a problem that last weeks patch had, which on\n systems with multiple zones per node (such as DMA zone) would\n take seeing any of these zones full as meaning that all zones\n on that node were full.\n\n Also I changed names - from \"zonelist faster\" to \"zonelist cache\",\n as that seemed to better convey what we\u0027re doing here - caching\n some of the key zonelist state (for faster access.)\n\n See below for some performance benchmark results. After all that\n discussion with David on why I didn\u0027t need them, I went and got\n some ;). I wanted to verify that I had not hurt the normal case\n of memory allocation noticeably. At least for my one little\n microbenchmark, I found (1) the normal case wasn\u0027t affected, and\n (2) workloads that forced scanning across multiple nodes for\n memory improved up to 10% fewer System CPU cycles and lower\n elapsed clock time (\u0027sys\u0027 and \u0027real\u0027). Good. See details, below.\n\n I didn\u0027t have the logic in get_page_from_freelist() for various\n full nodes and zone reclaim failures correct. That should be\n fixed up now - notice the new goto labels zonelist_scan,\n this_zone_full, and try_next_zone, in get_page_from_freelist().\n\nThere are two reasons I persued this alternative, over some earlier\nproposals that would have focused on optimizing the fake numa\nemulation case by caching the last useful zone:\n\n 1) Contrary to what I said before, we (SGI, on large ia64 sn2 systems)\n have seen real customer loads where the cost to scan the zonelist\n was a problem, due to many nodes being full of memory before\n we got to a node we could use. Or at least, I think we have.\n This was related to me by another engineer, based on experiences\n from some time past. So this is not guaranteed. Most likely, though.\n\n The following approach should help such real numa systems just as\n much as it helps fake numa systems, or any combination thereof.\n\n 2) The effort to distinguish fake from real numa, using node_distance,\n so that we could cache a fake numa node and optimize choosing\n it over equivalent distance fake nodes, while continuing to\n properly scan all real nodes in distance order, was going to\n require a nasty blob of zonelist and node distance munging.\n\n The following approach has no new dependency on node distances or\n zone sorting.\n\nSee comment in the patch below for a description of what it actually does.\n\nTechnical details of note (or controversy):\n\n - See the use of \"zlc_active\" and \"did_zlc_setup\" below, to delay\n adding any work for this new mechanism until we\u0027ve looked at the\n first zone in zonelist. I figured the odds of the first zone\n having the memory we needed were high enough that we should just\n look there, first, then get fancy only if we need to keep looking.\n\n - Some odd hackery was needed to add items to struct zonelist, while\n not tripping up the custom zonelists built by the mm/mempolicy.c\n code for MPOL_BIND. My usual wordy comments below explain this.\n Search for \"MPOL_BIND\".\n\n - Some per-node data in the struct zonelist is now modified frequently,\n with no locking. Multiple CPU cores on a node could hit and mangle\n this data. The theory is that this is just performance hint data,\n and the memory allocator will work just fine despite any such mangling.\n The fields at risk are the struct \u0027zonelist_cache\u0027 fields \u0027fullzones\u0027\n (a bitmask) and \u0027last_full_zap\u0027 (unsigned long jiffies). It should\n all be self correcting after at most a one second delay.\n\n - This still does a linear scan of the same lengths as before. All\n I\u0027ve optimized is making the scan faster, not algorithmically\n shorter. It is now able to scan a compact array of \u0027unsigned\n short\u0027 in the case of many full nodes, so one cache line should\n cover quite a few nodes, rather than each node hitting another\n one or two new and distinct cache lines.\n\n - If both Andi and Nick don\u0027t find this too complicated, I will be\n (pleasantly) flabbergasted.\n\n - I removed the comment claiming we only use one cachline\u0027s worth of\n zonelist. We seem, at least in the fake numa case, to have put the\n lie to that claim.\n\n - I pay no attention to the various watermarks and such in this performance\n hint. A node could be marked full for one watermark, and then skipped\n over when searching for a page using a different watermark. I think\n that\u0027s actually quite ok, as it will tend to slightly increase the\n spreading of memory over other nodes, away from a memory stressed node.\n\n\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\n\nPerformance - some benchmark results and analysis:\n\nThis benchmark runs a memory hog program that uses multiple\nthreads to touch alot of memory as quickly as it can.\n\nMultiple runs were made, touching 12, 38, 64 or 90 GBytes out of\nthe total 96 GBytes on the system, and using 1, 19, 37, or 55\nthreads (on a 56 CPU system.) System, user and real (elapsed)\ntimings were recorded for each run, shown in units of seconds,\nin the table below.\n\nTwo kernels were tested - 2.6.18-mm3 and the same kernel with\nthis zonelist caching patch added. The table also shows the\npercentage improvement the zonelist caching sys time is over\n(lower than) the stock *-mm kernel.\n\n number 2.6.18-mm3\t zonelist-cache delta (\u003c 0 good)\tpercent\n GBs N \t------------\t -------------- ----------------\tsystime\n mem threads sys user real\t sys user real sys user real\t better\n 12\t 1 153 24 177\t 151\t 24 176 -2 0 -1\t 1%\n 12\t19\t99 22 8\t 99\t 22\t8\t0 0 0\t 0%\n 12\t37 111 25 6\t 112\t 25\t6\t1 0 0\t -0%\n 12\t55 115 25 5\t 110\t 23\t5 -5 -2 0\t 4%\n 38\t 1 502 74 576\t 497\t 73 570 -5 -1 -6\t 0%\n 38\t19 426 78 48\t 373\t 76 39 -53 -2 -9\t 12%\n 38\t37 544 83 36\t 547\t 82 36\t3 -1 0\t -0%\n 38\t55 501 77 23\t 511\t 80 24 10 3 1\t -1%\n 64\t 1 917 125 1042\t 890\t124 1014 -27 -1 -28\t 2%\n 64\t19 1118 138 119\t 965\t141 103 -153 3 -16\t 13%\n 64\t37 1202 151 94\t 1136\t150 81 -66 -1 -13\t 5%\n 64\t55 1118 141 61\t 1072\t140 58 -46 -1 -3\t 4%\n 90\t 1 1342 177 1519\t 1275\t174 1450 -67 -3 -69\t 4%\n 90\t19 2392 199 192\t 2116\t189 176 -276 -10 -16\t 11%\n 90\t37 3313 238 175\t 2972\t225 145 -341 -13 -30\t 10%\n 90\t55 1948 210 104\t 1843\t213 100 -105 3 -4\t 5%\n\nNotes:\n 1) This test ran a memory hog program that started a specified number N of\n threads, and had each thread allocate and touch 1/N\u0027th of\n the total memory to be used in the test run in a single loop,\n writing a constant word to memory, one store every 4096 bytes.\n Watching this test during some earlier trial runs, I would see\n each of these threads sit down on one CPU and stay there, for\n the remainder of the pass, a different CPU for each thread.\n\n 2) The \u0027real\u0027 column is not comparable to the \u0027sys\u0027 or \u0027user\u0027 columns.\n The \u0027real\u0027 column is seconds wall clock time elapsed, from beginning\n to end of that test pass. The \u0027sys\u0027 and \u0027user\u0027 columns are total\n CPU seconds spent on that test pass. For a 19 thread test run,\n for example, the sum of \u0027sys\u0027 and \u0027user\u0027 could be up to 19 times the\n number of \u0027real\u0027 elapsed wall clock seconds.\n\n 3) Tests were run on a fresh, single-user boot, to minimize the amount\n of memory already in use at the start of the test, and to minimize\n the amount of background activity that might interfere.\n\n 4) Tests were done on a 56 CPU, 28 Node system with 96 GBytes of RAM.\n\n 5) Notice that the \u0027real\u0027 time gets large for the single thread runs, even\n though the measured \u0027sys\u0027 and \u0027user\u0027 times are modest. I\u0027m not sure what\n that means - probably something to do with it being slow for one thread to\n be accessing memory along ways away. Perhaps the fake numa system, running\n ostensibly the same workload, would not show this substantial degradation\n of \u0027real\u0027 time for one thread on many nodes -- lets hope not.\n\n 6) The high thread count passes (one thread per CPU - on 55 of 56 CPUs)\n ran quite efficiently, as one might expect. Each pair of threads needed\n to allocate and touch the memory on the node the two threads shared, a\n pleasantly parallizable workload.\n\n 7) The intermediate thread count passes, when asking for alot of memory forcing\n them to go to a few neighboring nodes, improved the most with this zonelist\n caching patch.\n\nConclusions:\n * This zonelist cache patch probably makes little difference one way or the\n other for most workloads on real numa hardware, if those workloads avoid\n heavy off node allocations.\n * For memory intensive workloads requiring substantial off-node allocations\n on real numa hardware, this patch improves both kernel and elapsed timings\n up to ten per-cent.\n * For fake numa systems, I\u0027m optimistic, but will have to leave that up to\n Rohit Seth to actually test (once I get him a 2.6.18 backport.)\n\nSigned-off-by: Paul Jackson \u003cpj@sgi.com\u003e\nCc: Rohit Seth \u003crohitseth@google.com\u003e\nCc: Christoph Lameter \u003cclameter@engr.sgi.com\u003e\nCc: David Rientjes \u003crientjes@cs.washington.edu\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": "89689ae7f95995723fbcd5c116c47933a3bb8b13", "tree": "4d73ff59b557fa1a84c6064406ff101c76ff8adc", "parents": [ "c0a499c2c42992cff097b38be29d2ba60d2fd99a" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Wed Dec 06 20:31:45 2006 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.osdl.org", "time": "Thu Dec 07 08:39:20 2006 -0800" }, "message": "[PATCH] Get rid of zone_table[]\n\nThe zone table is mostly not needed. If we have a node in the page flags\nthen we can get to the zone via NODE_DATA() which is much more likely to be\nalready in the cpu cache.\n\nIn case of SMP and UP NODE_DATA() is a constant pointer which allows us to\naccess an exact replica of zonetable in the node_zones field. In all of\nthe above cases there will be no need at all for the zone table.\n\nThe only remaining case is if in a NUMA system the node numbers do not fit\ninto the page flags. In that case we make sparse generate a table that\nmaps sections to nodes and use that table to to figure out the node number.\n This table is sized to fit in a single cache line for the known 32 bit\nNUMA platform which makes it very likely that the information can be\nobtained without a cache miss.\n\nFor sparsemem the zone table seems to be have been fairly large based on\nthe maximum possible number of sections and the number of zones per node.\nThere is some memory saving by removing zone_table. The main benefit is to\nreduce the cache foootprint of the VM from the frequent lookups of zones.\nPlus it simplifies the page allocator.\n\n[akpm@osdl.org: build fix]\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nCc: Dave Hansen \u003chaveblue@us.ibm.com\u003e\nCc: Andy Whitcroft \u003capw@shadowen.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "0798e5193cd70f6c867ec176d7730589f944c627", "tree": "abe3ada0b04080729418a0c301d8b55b4363b56e", "parents": [ "a2ce774096110ccc5c02cbdc05897d005fcd3db8" ], "author": { "name": "Paul Jackson", "email": "pj@sgi.com", "time": "Wed Dec 06 20:31:38 2006 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.osdl.org", "time": "Thu Dec 07 08:39:20 2006 -0800" }, "message": "[PATCH] memory page alloc minor cleanups\n\n- s/freeliest/freelist/ spelling fix\n\n- Check for NULL *z zone seems useless - even if it could happen, so\n what? Perhaps we should have a check later on if we are faced with an\n allocation request that is not allowed to fail - shouldn\u0027t that be a\n serious kernel error, passing an empty zonelist with a mandate to not\n fail?\n\n- Initializing \u0027z\u0027 to zonelist-\u003ezones can wait until after the first\n get_page_from_freelist() fails; we only use \u0027z\u0027 in the wakeup_kswapd()\n loop, so let\u0027s initialize \u0027z\u0027 there, in a \u0027for\u0027 loop. Seems clearer.\n\n- Remove superfluous braces around a break\n\n- Fix a couple errant spaces\n\n- Adjust indentation on the cpuset_zone_allowed() check, to match the\n lines just before it -- seems easier to read in this case.\n\n- Add another set of braces to the zone_watermark_ok logic\n\nFrom: Paul Jackson \u003cpj@sgi.com\u003e\n\n Backout one item from a previous \"memory page_alloc minor cleanups\" patch.\n Until and unless we are certain that no one can ever pass an empty zonelist\n to __alloc_pages(), this check for an empty zonelist (or some BUG\n equivalent) is essential. The code in get_page_from_freelist() blow ups if\n passed an empty zonelist.\n\nSigned-off-by: Paul Jackson \u003cpj@sgi.com\u003e\nAcked-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nCc: Nick Piggin \u003cnickpiggin@yahoo.com.au\u003e\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": "1abbfb412b1610ec3a7ec0164108cee01191d9f5", "tree": "ab63b4e9b901455385a55ffa4a30b23343d363eb", "parents": [ "0b1082efb92eedb28e982cfae526267ebdcf5622" ], "author": { "name": "Mel Gorman", "email": "mel@skynet.ie", "time": "Thu Nov 23 12:01:41 2006 +0000" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.osdl.org", "time": "Thu Nov 23 09:30:38 2006 -0800" }, "message": "[PATCH] x86_64: fix bad page state in process \u0027swapper\u0027\n\nfind_min_pfn_for_node() and find_min_pfn_with_active_regions() both\ndepend on a sorted early_node_map[]. However, sort_node_map() is being\ncalled after fin_min_pfn_with_active_regions() in\nfree_area_init_nodes().\n\nIn most cases, this is ok, but on at least one x86_64, the SRAT table\ncaused the E820 ranges to be registered out of order. This gave the\nwrong values for the min PFN range resulting in some pages not being\ninitialised.\n\nThis patch sorts the early_node_map in find_min_pfn_for_node(). It has\nbeen boot tested on x86, x86_64, ppc64 and ia64.\n\nSigned-off-by: Mel Gorman \u003cmel@csn.ul.ie\u003e\nAcked-by: Andre Noll \u003cmaan@systemlinux.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "941c7105dc4f4961727acc518e18e00b9a03cbf3", "tree": "a57c90d295b48492d2e6f1151cdcdff31475aa70", "parents": [ "c7e12b838989b0e432c7a1cdf1e6c6fd936007f6" ], "author": { "name": "nkalmala", "email": "nkalmala@gmail.com", "time": "Thu Nov 02 22:07:04 2006 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Fri Nov 03 12:27:56 2006 -0800" }, "message": "[PATCH] mm: un-needed add-store operation wastes a few bytes\n\nUn-needed add-store operation wastes a few bytes.\n8 bytes wasted with -O2, on a ppc.\n\nSigned-off-by: nkalmala \u003cnkalmala@gmail.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "0c6cb974636dd29681b03f8eb0ae227decab01fb", "tree": "dfcf831a0c067eec8e1afbd4c22be3e1e736155e", "parents": [ "057647fc47b3a5fbcfa997041db3f483d506603c" ], "author": { "name": "Mel Gorman", "email": "mel@skynet.ie", "time": "Sat Oct 28 10:38:59 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Sat Oct 28 11:30:55 2006 -0700" }, "message": "[PATCH] Calculation fix for memory holes beyong the end of physical memory\n\nabsent_pages_in_range() made the assumption that users of the\narch-independent zone-sizing API would not care about holes beyound the end\nof physical memory. This was not the case and was \"fixed\" in a patch\ncalled \"Account for holes that are outside the range of physical memory\".\nHowever, when given a range that started before a hole in \"real\" memory and\nended beyond the end of memory, it would get the result wrong. The bug is\nin mainline but a patch is below.\n\nIt has been tested successfully on a number of machines and architectures.\nAdditional credit to Keith Mannthey for discovering the problem, helping\nidentify the correct fix and confirming it Worked For Him.\n\nSigned-off-by: Mel Gorman \u003cmel@csn.ul.ie\u003e\nCc: keith mannthey \u003ckmannth@us.ibm.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "3bb1a852ab6c9cdf211a2f4a2f502340c8c38eca", "tree": "d08aa652e8eb40c47d5bc37fa1a240b4fb7db029", "parents": [ "2ae88149a27cadf2840e0ab8155bef13be285c03" ], "author": { "name": "Martin Bligh", "email": "mbligh@mbligh.org", "time": "Sat Oct 28 10:38:24 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Sat Oct 28 11:30:50 2006 -0700" }, "message": "[PATCH] vmscan: Fix temp_priority race\n\nThe temp_priority field in zone is racy, as we can walk through a reclaim\npath, and just before we copy it into prev_priority, it can be overwritten\n(say with DEF_PRIORITY) by another reclaimer.\n\nThe same bug is contained in both try_to_free_pages and balance_pgdat, but\nit is fixed slightly differently. In balance_pgdat, we keep a separate\npriority record per zone in a local array. In try_to_free_pages there is\nno need to do this, as the priority level is the same for all zones that we\nreclaim from.\n\nImpact of this bug is that temp_priority is copied into prev_priority, and\nsetting this artificially high causes reclaimers to set distress\nartificially low. They then fail to reclaim mapped pages, when they are,\nin fact, under severe memory pressure (their priority may be as low as 0).\nThis causes the OOM killer to fire incorrectly.\n\nFrom: Andrew Morton \u003cakpm@osdl.org\u003e\n\n__zone_reclaim() isn\u0027t modifying zone-\u003eprev_priority. But zone-\u003eprev_priority\nis used in the decision whether or not to bring mapped pages onto the inactive\nlist. Hence there\u0027s a risk here that __zone_reclaim() will fail because\nzone-\u003eprev_priority ir large (ie: low urgency) and lots of mapped pages end up\nstuck on the active list.\n\nFix that up by decreasing (ie making more urgent) zone-\u003eprev_priority as\n__zone_reclaim() scans the zone\u0027s pages.\n\nThis bug perhaps explains why ZONE_RECLAIM_PRIORITY was created. It should be\npossible to remove that now, and to just start out at DEF_PRIORITY?\n\nCc: Nick Piggin \u003cnickpiggin@yahoo.com.au\u003e\nCc: Christoph Lameter \u003cclameter@engr.sgi.com\u003e\nCc: \u003cstable@kernel.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "7516795739bd53175629b90fab0ad488d7a6a9f7", "tree": "1f6b4b7a4f08a25155605b10d5963b7c6ca72e7b", "parents": [ "047a66d4bb24aaf19f41d620f8f0534c2153cd0b" ], "author": { "name": "Andy Whitcroft", "email": "apw@shadowen.org", "time": "Sat Oct 21 10:24:14 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Sat Oct 21 13:35:06 2006 -0700" }, "message": "[PATCH] Reintroduce NODES_SPAN_OTHER_NODES for powerpc\n\nReintroduce NODES_SPAN_OTHER_NODES for powerpc\n\nRevert \"[PATCH] Remove SPAN_OTHER_NODES config definition\"\n This reverts commit f62859bb6871c5e4a8e591c60befc8caaf54db8c.\nRevert \"[PATCH] mm: remove arch independent NODES_SPAN_OTHER_NODES\"\n This reverts commit a94b3ab7eab4edcc9b2cb474b188f774c331adf7.\n\nAlso update the comments to indicate that this is still required\nand where its used.\n\nSigned-off-by: Andy Whitcroft \u003capw@shadowen.org\u003e\nCc: Paul Mackerras \u003cpaulus@samba.org\u003e\nCc: Mike Kravetz \u003ckravetz@us.ibm.com\u003e\nCc: Benjamin Herrenschmidt \u003cbenh@kernel.crashing.org\u003e\nAcked-by: Mel Gorman \u003cmel@csn.ul.ie\u003e\nAcked-by: Will Schmidt \u003cwill_schmidt@vnet.ibm.com\u003e\nCc: Christoph Lameter \u003cclameter@sgi.com\u003e\nCc: \u003cstable@kernel.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "6220ec7844fda2686496013a66b5b9169976b991", "tree": "7274cbe70f0ef3da085e1f74e3605fa8d1cfc777", "parents": [ "e51959faa61278c762389802faf8ba1a40676628" ], "author": { "name": "Andrew Morton", "email": "akpm@osdl.org", "time": "Thu Oct 19 23:29:05 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Fri Oct 20 10:26:43 2006 -0700" }, "message": "[PATCH] highest_possible_node_id() linkage fix\n\nQooting Adrian:\n\n- net/sunrpc/svc.c uses highest_possible_node_id()\n\n- include/linux/nodemask.h says highest_possible_node_id() is\n out-of-line #if MAX_NUMNODES \u003e 1\n\n- the out-of-line highest_possible_node_id() is in lib/cpumask.c\n\n- lib/Makefile: lib-$(CONFIG_SMP) +\u003d cpumask.o\n CONFIG_ARCH_DISCONTIGMEM_ENABLE\u003dy, CONFIG_SMP\u003dn, CONFIG_SUNRPC\u003dy\n\n-\u003e highest_possible_node_id() is used in net/sunrpc/svc.c\n CONFIG_NODES_SHIFT defined and \u003e 0\n\n-\u003e include/linux/numa.h: MAX_NUMNODES \u003e 1\n\n-\u003e compile error\n\nThe bug is not present on architectures where ARCH_DISCONTIGMEM_ENABLE\ndepends on NUMA (but m32r isn\u0027t the only affected architecture).\n\nSo move the function into page_alloc.c\n\nCc: Adrian Bunk \u003cbunk@stusta.de\u003e\nCc: 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": "3fcfab16c5b86eaa3db3a9a31adba550c5b67141", "tree": "bd348fa081b8fbec2c79fbf8f173a306d70b2b2c", "parents": [ "79e2de4bc53d7ca2a8eedee49e4a92479b4b530e" ], "author": { "name": "Andrew Morton", "email": "akpm@osdl.org", "time": "Thu Oct 19 23:28:16 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Fri Oct 20 10:26:35 2006 -0700" }, "message": "[PATCH] separate bdi congestion functions from queue congestion functions\n\nSeparate out the concept of \"queue congestion\" from \"backing-dev congestion\".\nCongestion is a backing-dev concept, not a queue concept.\n\nThe blk_* congestion functions are retained, as wrappers around the core\nbacking-dev congestion functions.\n\nThis proper layering is needed so that NFS can cleanly use the congestion\nfunctions, and so that CONFIG_BLOCK\u003dn actually links.\n\nCc: \"Thomas Maier\" \u003cbalagi@justmail.de\u003e\nCc: \"Jens Axboe\" \u003cjens.axboe@oracle.com\u003e\nCc: Trond Myklebust \u003ctrond.myklebust@fys.uio.no\u003e\nCc: David Howells \u003cdhowells@redhat.com\u003e\nCc: Peter Osterlund \u003cpetero2@telia.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "9858db504caedb2424b9a32744c23f9a81ec1731", "tree": "516b4735df82feb9b14bea4984769e7ac013373d", "parents": [ "dafb13673c463bc2aade4a4819704dde0f5fa37f" ], "author": { "name": "Nick Piggin", "email": "npiggin@suse.de", "time": "Wed Oct 11 01:21:30 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Wed Oct 11 11:14:19 2006 -0700" }, "message": "[PATCH] mm: locks_freed fix\n\nMove the lock debug checks below the page reserved checks. Also, having\ndebug_check_no_locks_freed in kernel_map_pages is wrong.\n\nSigned-off-by: Nick Piggin \u003cnpiggin@suse.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "dafb13673c463bc2aade4a4819704dde0f5fa37f", "tree": "4944daaa4ca8e9d988e4357ae902fda6ea531d28", "parents": [ "699397499742d1245ea5d677a08fa265df666d2d" ], "author": { "name": "Nick Piggin", "email": "npiggin@suse.de", "time": "Wed Oct 11 01:21:30 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Wed Oct 11 11:14:19 2006 -0700" }, "message": "[PATCH] mm: arch_free_page fix\n\nAfter the PG_reserved check was added, arch_free_page was being called in the\nwrong place (it could be called for a page we don\u0027t actually want to free).\nFix that.\n\nSigned-off-by: Nick Piggin \u003cnpiggin@suse.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "b888132b0ff29ca0733589a594c243ed612438eb", "tree": "6bb64b98ed5f835db3bc7ddfe3a79788fe9890f4", "parents": [ "6391af174ad75f72e92043c1dd8302660a2fec58" ], "author": { "name": "Mel Gorman", "email": "mel@skynet.ie", "time": "Wed Oct 11 01:20:40 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Wed Oct 11 11:14:14 2006 -0700" }, "message": "[PATCH] mm: remove memmap_zone_idx()\n\nmemmap_zone_idx() is not used anymore. It was required by an earlier\nversion of\naccount-for-memmap-and-optionally-the-kernel-image-as-holes.patch but not\nany more.\n\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "88ca3b94e82e763ef90c8e57cacd51a3c143ea62", "tree": "d08b8cc64baa7925723f87669c9d0c3b9761f2ac", "parents": [ "fe1668ae5bf0145014c71797febd9ad5670d5d05" ], "author": { "name": "Randy Dunlap", "email": "rdunlap@xenotime.net", "time": "Wed Oct 04 02:15:25 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Wed Oct 04 07:55:12 2006 -0700" }, "message": "[PATCH] page_alloc: fix kernel-doc and func. declaration\n\nFix kernel-doc and function declaration (missing \"void\") in\nmm/page_alloc.c.\n\nAdd mm/page_alloc.c to kernel-api.tmpl in DocBook.\n\nmm/page_alloc.c:2589:38: warning: non-ANSI function declaration of function \u0027remove_all_active_ranges\u0027\n\nSigned-off-by: Randy Dunlap \u003crdunlap@xenotime.net\u003e\nAcked-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": "e80ee884ae0e3794ef2b65a18a767d502ad712ee", "tree": "6e5704f603d1596df930bc22f5e926cc50550102", "parents": [ "b2abacf3a2699a8020829c85c16f358ba85cecaf" ], "author": { "name": "Nick Piggin", "email": "nickpiggin@yahoo.com.au", "time": "Wed Oct 04 02:15:23 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Wed Oct 04 07:55:12 2006 -0700" }, "message": "[PATCH] mm: micro optimise zone_watermark_ok\n\nHaving min be a signed quantity means gcc can\u0027t turn high latency divides\ninto shifts. There happen to be two such divides for GFP_ATOMIC (ie.\nnetworking, ie. important) allocations, one of which depends on the other.\n Fixing this makes code smaller as a bonus.\n\nShame on somebody (probably me).\n\nSigned-off-by: Nick Piggin \u003cnpiggin@suse.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "423b41d773abe443bb546ce91361192073b96f88", "tree": "495b410fb4001ecf0daba6198e6b4c009a638ff8", "parents": [ "17a3b05047119b7fc72ef03962e202becc659579" ], "author": { "name": "Randy Dunlap", "email": "rdunlap@xenotime.net", "time": "Wed Sep 27 01:50:12 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Wed Sep 27 08:26:13 2006 -0700" }, "message": "[PATCH] mm/page_alloc: use NULL instead of 0 for ptr\n\nUse NULL instead of 0 for pointer value, eliminate sparse warnings.\n\nSigned-off-by: Randy Dunlap \u003crdunlap@xenotime.net\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "66a550308b8e4cbaba185d0326cb05d1bd758101", "tree": "e0ac829da7702413e57c7de288ce27398f32cfdb", "parents": [ "d5f541ed6e31518508c688912e7464facf253c87" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Wed Sep 27 01:50:09 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Wed Sep 27 08:26:13 2006 -0700" }, "message": "[PATCH] Do not allocate pagesets for unpopulated zones.\n\nWe do not need to allocate pagesets for unpopulated zones.\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": "d5f541ed6e31518508c688912e7464facf253c87", "tree": "028d296306e247ca32ec5db398d365dcd70d26b7", "parents": [ "765c4507af71c39aba21006bbd3ec809fe9714ff" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Wed Sep 27 01:50:08 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Wed Sep 27 08:26:13 2006 -0700" }, "message": "[PATCH] Add node to zone for the NUMA case\n\nAdd the node in order to optimize zone_to_nid.\n\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nAcked-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": "08e0f6a9705376732fd3bc9bf8ba97a6b5211eb1", "tree": "dfb761013377b983641fae33223157880171c498", "parents": [ "c72419138fa34e1bc1f1c6fa54ee77df55a05ed0" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Wed Sep 27 01:50:06 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Wed Sep 27 08:26:12 2006 -0700" }, "message": "[PATCH] Add NUMA_BUILD definition in kernel.h to avoid #ifdef CONFIG_NUMA\n\nThe NUMA_BUILD constant is always available and will be set to 1 on\nNUMA_BUILDs. That way checks valid only under CONFIG_NUMA can easily be done\nwithout #ifdef CONFIG_NUMA\n\nF.e.\n\nif (NUMA_BUILD \u0026\u0026 \u003cnuma_condition\u003e) {\n...\n}\n\n[akpm: not a thing we\u0027d normally do, but CONFIG_NUMA is special: it is\n causing ifdef explosion in core kernel, so let\u0027s see if this is a comfortable\n way in whcih to control that]\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": "c72419138fa34e1bc1f1c6fa54ee77df55a05ed0", "tree": "293e2d11f5d4b8487aeccbb4eca71f3572012c17", "parents": [ "de3083ec3e6bfb1ab60bc8a410f37702529f953c" ], "author": { "name": "Jes Sorensen", "email": "jes@sgi.com", "time": "Wed Sep 27 01:50:05 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Wed Sep 27 08:26:12 2006 -0700" }, "message": "[PATCH] Condense output of show_free_areas()\n\nOn larger systems, the amount of output dumped on the console when you do\nSysRq-M is beyond insane. This patch is trying to reduce it somewhat as\neven with the smaller NUMA systems that have hit the desktop this seems to\nbe a fair thing to do.\n\nThe philosophy I have taken is as follows:\n 1) If a zone is empty, don\u0027t tell, we don\u0027t need yet another line\n telling us so. The information is available since one can look up\n the fact how many zones were initialized in the first place.\n 2) Put as much information on a line is possible, if it can be done\n in one line, rahter than two, then do it in one. I tried to format\n the temperature stuff for easy reading.\n\nChange show_free_areas() to not print lines for empty zones. If no zone\noutput is printed, the zone is empty. This reduces the number of lines\ndumped to the console in sysrq on a large system by several thousand lines.\n\nChange the zone temperature printouts to use one line per CPU instead of\ntwo lines (one hot, one cold). On a 1024 CPU, 1024 node system, this\nreduces the console output by over a million lines of output.\n\nWhile this is a bigger problem on large NUMA systems, it is also applicable\nto smaller desktop sized and mid range NUMA systems.\n\nOld format:\n\nMem-info:\nNode 0 DMA per-cpu:\ncpu 0 hot: high 42, batch 7 used:24\ncpu 0 cold: high 14, batch 3 used:1\ncpu 1 hot: high 42, batch 7 used:34\ncpu 1 cold: high 14, batch 3 used:0\ncpu 2 hot: high 42, batch 7 used:0\ncpu 2 cold: high 14, batch 3 used:0\ncpu 3 hot: high 42, batch 7 used:0\ncpu 3 cold: high 14, batch 3 used:0\ncpu 4 hot: high 42, batch 7 used:0\ncpu 4 cold: high 14, batch 3 used:0\ncpu 5 hot: high 42, batch 7 used:0\ncpu 5 cold: high 14, batch 3 used:0\ncpu 6 hot: high 42, batch 7 used:0\ncpu 6 cold: high 14, batch 3 used:0\ncpu 7 hot: high 42, batch 7 used:0\ncpu 7 cold: high 14, batch 3 used:0\nNode 0 DMA32 per-cpu: empty\nNode 0 Normal per-cpu: empty\nNode 0 HighMem per-cpu: empty\nNode 1 DMA per-cpu:\n[snip]\nFree pages: 5410688kB (0kB HighMem)\nActive:9536 inactive:4261 dirty:6 writeback:0 unstable:0 free:338168 slab:1931 mapped:1900 pagetables:208\nNode 0 DMA free:1676304kB min:3264kB low:4080kB high:4896kB active:128048kB inactive:61568kB present:1970880kB pages_scanned:0 all_unreclaimable? no\nlowmem_reserve[]: 0 0 0 0\nNode 0 DMA32 free:0kB min:0kB low:0kB high:0kB active:0kB inactive:0kB present:0kB pages_scanned:0 all_unreclaimable? no\nlowmem_reserve[]: 0 0 0 0\nNode 0 Normal free:0kB min:0kB low:0kB high:0kB active:0kB inactive:0kB present:0kB pages_scanned:0 all_unreclaimable? no\nlowmem_reserve[]: 0 0 0 0\nNode 0 HighMem free:0kB min:512kB low:512kB high:512kB active:0kB inactive:0kB present:0kB pages_scanned:0 all_unreclaimable? no\nlowmem_reserve[]: 0 0 0 0\nNode 1 DMA free:1951728kB min:3280kB low:4096kB high:4912kB active:5632kB inactive:1504kB present:1982464kB pages_scanned:0 all_unreclaimable? no\nlowmem_reserve[]: 0 0 0 0\n....\n\nNew format:\n\nMem-info:\nNode 0 DMA per-cpu:\nCPU 0: Hot: hi: 42, btch: 7 usd: 41 Cold: hi: 14, btch: 3 usd: 2\nCPU 1: Hot: hi: 42, btch: 7 usd: 40 Cold: hi: 14, btch: 3 usd: 1\nCPU 2: Hot: hi: 42, btch: 7 usd: 0 Cold: hi: 14, btch: 3 usd: 0\nCPU 3: Hot: hi: 42, btch: 7 usd: 0 Cold: hi: 14, btch: 3 usd: 0\nCPU 4: Hot: hi: 42, btch: 7 usd: 0 Cold: hi: 14, btch: 3 usd: 0\nCPU 5: Hot: hi: 42, btch: 7 usd: 0 Cold: hi: 14, btch: 3 usd: 0\nCPU 6: Hot: hi: 42, btch: 7 usd: 0 Cold: hi: 14, btch: 3 usd: 0\nCPU 7: Hot: hi: 42, btch: 7 usd: 0 Cold: hi: 14, btch: 3 usd: 0\nNode 1 DMA per-cpu:\n[snip]\nFree pages: 5411088kB (0kB HighMem)\nActive:9558 inactive:4233 dirty:6 writeback:0 unstable:0 free:338193 slab:1942 mapped:1918 pagetables:208\nNode 0 DMA free:1677648kB min:3264kB low:4080kB high:4896kB active:129296kB inactive:58864kB present:1970880kB pages_scanned:0 all_unreclaimable? no\nlowmem_reserve[]: 0 0 0 0\nNode 1 DMA free:1948448kB min:3280kB low:4096kB high:4912kB active:6864kB inactive:3536kB present:1982464kB pages_scanned:0 all_unreclaimable? no\nlowmem_reserve[]: 0 0 0 0\n\nSigned-off-by: Jes Sorensen \u003cjes@sgi.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "fb01439c5b778d5974a488c5d4fe85e6d0e18a68", "tree": "dd5483b2555adbdc51f215fcb010484d423f63a0", "parents": [ "9c7cd6877cf8db15269163deda69392263124c1e" ], "author": { "name": "Mel Gorman", "email": "mel@skynet.ie", "time": "Wed Sep 27 01:49:59 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Wed Sep 27 08:26:12 2006 -0700" }, "message": "[PATCH] Allow an arch to expand node boundaries\n\nArch-independent zone-sizing determines the size of a node\n(pgdat-\u003enode_spanned_pages) based on the physical memory that was\nregistered by the architecture. However, when\nCONFIG_MEMORY_HOTPLUG_RESERVE is set, the architecture expects that the\nspanned_pages will be much larger and that mem_map will be allocated that\nis used lated on memory hot-add.\n\nThis patch allows an architecture that sets CONFIG_MEMORY_HOTPLUG_RESERVE\nto call push_node_boundaries() which will set the node beginning and end to\nat *least* the requested boundary.\n\nCc: Dave Hansen \u003chaveblue@us.ibm.com\u003e\nCc: Andy Whitcroft \u003capw@shadowen.org\u003e\nCc: Andi Kleen \u003cak@muc.de\u003e\nCc: Benjamin Herrenschmidt \u003cbenh@kernel.crashing.org\u003e\nCc: Paul Mackerras \u003cpaulus@samba.org\u003e\nCc: \"Keith Mannthey\" \u003ckmannth@gmail.com\u003e\nCc: \"Luck, Tony\" \u003ctony.luck@intel.com\u003e\nCc: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nCc: Yasunori Goto \u003cy-goto@jp.fujitsu.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "9c7cd6877cf8db15269163deda69392263124c1e", "tree": "ff5197bdd2d5f02a5032c050eb39349534a4b14b", "parents": [ "0e0b864e069c52a7b3e4a7da56e29b03a012fd75" ], "author": { "name": "Mel Gorman", "email": "mel@skynet.ie", "time": "Wed Sep 27 01:49:58 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Wed Sep 27 08:26:11 2006 -0700" }, "message": "[PATCH] Account for holes that are outside the range of physical memory\n\nabsent_pages_in_range() made the assumption that users of the API would not\ncare about holes beyound the end of physical memory. This was not the\ncase. This patch will account for ranges outside of physical memory as\nholes correctly.\n\nCc: Dave Hansen \u003chaveblue@us.ibm.com\u003e\nCc: Andy Whitcroft \u003capw@shadowen.org\u003e\nCc: Andi Kleen \u003cak@muc.de\u003e\nCc: Benjamin Herrenschmidt \u003cbenh@kernel.crashing.org\u003e\nCc: Paul Mackerras \u003cpaulus@samba.org\u003e\nCc: \"Keith Mannthey\" \u003ckmannth@gmail.com\u003e\nCc: \"Luck, Tony\" \u003ctony.luck@intel.com\u003e\nCc: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nCc: Yasunori Goto \u003cy-goto@jp.fujitsu.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "0e0b864e069c52a7b3e4a7da56e29b03a012fd75", "tree": "e3fcfd997ef912ed3c61cb2b5c2ca57a7f45ec58", "parents": [ "05e0caad3b7bd0d0fbeff980bca22f186241a501" ], "author": { "name": "Mel Gorman", "email": "mel@csn.ul.ie", "time": "Wed Sep 27 01:49:56 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Wed Sep 27 08:26:11 2006 -0700" }, "message": "[PATCH] Account for memmap and optionally the kernel image as holes\n\nThe x86_64 code accounted for memmap and some portions of the the DMA zone as\nholes. This was because those areas would never be reclaimed and accounting\nfor them as memory affects min watermarks. This patch will account for the\nmemmap as a memory hole. Architectures may optionally use set_dma_reserve()\nif they wish to account for a portion of memory in ZONE_DMA as a hole.\n\nSigned-off-by: Mel Gorman \u003cmel@csn.ul.ie\u003e\nCc: Dave Hansen \u003chaveblue@us.ibm.com\u003e\nCc: Andy Whitcroft \u003capw@shadowen.org\u003e\nCc: Andi Kleen \u003cak@muc.de\u003e\nCc: Benjamin Herrenschmidt \u003cbenh@kernel.crashing.org\u003e\nCc: Paul Mackerras \u003cpaulus@samba.org\u003e\nCc: \"Keith Mannthey\" \u003ckmannth@gmail.com\u003e\nCc: \"Luck, Tony\" \u003ctony.luck@intel.com\u003e\nCc: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nCc: Yasunori Goto \u003cy-goto@jp.fujitsu.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "c713216deebd95d2b0ab38fef8bb2361c0180c2d", "tree": "a5a8c61be427e3591811ff712b9ec7ef2f1a1f20", "parents": [ "2bd0cfbde2c0a74e209acbf045f1298cc2f61e01" ], "author": { "name": "Mel Gorman", "email": "mel@csn.ul.ie", "time": "Wed Sep 27 01:49:43 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Wed Sep 27 08:26:11 2006 -0700" }, "message": "[PATCH] Introduce mechanism for registering active regions of memory\n\nAt a basic level, architectures define structures to record where active\nranges of page frames are located. Once located, the code to calculate zone\nsizes and holes in each architecture is very similar. Some of this zone and\nhole sizing code is difficult to read for no good reason. This set of patches\neliminates the similar-looking architecture-specific code.\n\nThe patches introduce a mechanism where architectures register where the\nactive ranges of page frames are with add_active_range(). When all areas have\nbeen discovered, free_area_init_nodes() is called to initialise the pgdat and\nzones. The zone sizes and holes are then calculated in an architecture\nindependent manner.\n\nPatch 1 introduces the mechanism for registering and initialising PFN ranges\nPatch 2 changes ppc to use the mechanism - 139 arch-specific LOC removed\nPatch 3 changes x86 to use the mechanism - 136 arch-specific LOC removed\nPatch 4 changes x86_64 to use the mechanism - 74 arch-specific LOC removed\nPatch 5 changes ia64 to use the mechanism - 52 arch-specific LOC removed\nPatch 6 accounts for mem_map as a memory hole as the pages are not reclaimable.\n\tIt adjusts the watermarks slightly\n\nTony Luck has successfully tested for ia64 on Itanium with tiger_defconfig,\ngensparse_defconfig and defconfig. Bob Picco has also tested and debugged on\nIA64. Jack Steiner successfully boot tested on a mammoth SGI IA64-based\nmachine. These were on patches against 2.6.17-rc1 and release 3 of these\npatches but there have been no ia64-changes since release 3.\n\nThere are differences in the zone sizes for x86_64 as the arch-specific code\nfor x86_64 accounts the kernel image and the starting mem_maps as memory holes\nbut the architecture-independent code accounts the memory as present.\n\nThe big benefit of this set of patches is a sizable reduction of\narchitecture-specific code, some of which is very hairy. There should be a\ngreater reduction when other architectures use the same mechanisms for zone\nand hole sizing but I lack the hardware to test on.\n\nAdditional credit;\n\tDave Hansen for the initial suggestion and comments on early patches\n\tAndy Whitcroft for reviewing early versions and catching numerous\n\t\terrors\n\tTony Luck for testing and debugging on IA64\n\tBob Picco for fixing bugs related to pfn registration, reviewing a\n\t\tnumber of patch revisions, providing a number of suggestions\n\t\ton future direction and testing heavily\n\tJack Steiner and Robin Holt for testing on IA64 and clarifying\n\t\tissues related to memory holes\n\tYasunori for testing on IA64\n\tAndi Kleen for reviewing and feeding back about x86_64\n\tChristian Kujau for providing valuable information related to ACPI\n\t\tproblems on x86_64 and testing potential fixes\n\nThis patch:\n\nDefine the structure to represent an active range of page frames within a node\nin an architecture independent manner. Architectures are expected to register\nactive ranges of PFNs using add_active_range(nid, start_pfn, end_pfn) and call\nfree_area_init_nodes() passing the PFNs of the end of each zone.\n\nSigned-off-by: Mel Gorman \u003cmel@csn.ul.ie\u003e\nSigned-off-by: Bob Picco \u003cbob.picco@hp.com\u003e\nCc: Dave Hansen \u003chaveblue@us.ibm.com\u003e\nCc: Andy Whitcroft \u003capw@shadowen.org\u003e\nCc: Andi Kleen \u003cak@muc.de\u003e\nCc: Benjamin Herrenschmidt \u003cbenh@kernel.crashing.org\u003e\nCc: Paul Mackerras \u003cpaulus@samba.org\u003e\nCc: \"Keith Mannthey\" \u003ckmannth@gmail.com\u003e\nCc: \"Luck, Tony\" \u003ctony.luck@intel.com\u003e\nCc: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nCc: Yasunori Goto \u003cy-goto@jp.fujitsu.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "f623f0db8e6aa86a37be86167e4ff478821a9f4f", "tree": "fab12e8dc57d14101e9e512ba708b83f74551dd9", "parents": [ "e3920fb42c8ddfe63befb54d95c0e13eabacea9b" ], "author": { "name": "Rafael J. Wysocki", "email": "rjw@sisk.pl", "time": "Mon Sep 25 23:32:49 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Tue Sep 26 08:48:59 2006 -0700" }, "message": "[PATCH] swsusp: Fix mark_free_pages\n\nClean up mm/page_alloc.c#mark_free_pages() and make it avoid clearing\nPageNosaveFree for PageNosave pages. This allows us to get rid of an ugly\nhack in kernel/power/snapshot.c#copy_data_pages().\n\nAdditionally, the page-copying loop in copy_data_pages() is moved to an\ninline function.\n\nSigned-off-by: Rafael J. Wysocki \u003crjw@sisk.pl\u003e\nCc: Pavel Machek \u003cpavel@ucw.cz\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "89fa30242facca249aead2aac03c4c69764f911c", "tree": "1ac46b4777b819f2a4793d8e37330576ae5089ec", "parents": [ "4415cc8df630b05d3a54267d5f3e5c0b63a4ec05" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Mon Sep 25 23:31:55 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Tue Sep 26 08:48:52 2006 -0700" }, "message": "[PATCH] NUMA: Add zone_to_nid function\n\nThere are many places where we need to determine the node of a zone.\nCurrently we use a difficult to read sequence of pointer dereferencing.\nPut that into an inline function and use throughout VM. Maybe we can find\na way to optimize the lookup in the future.\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": "0ff38490c836dc379ff7ec45b10a15a662f4e5f6", "tree": "cb42d5d3cace3c8d12f0b304879039c503807981", "parents": [ "972d1a7b140569084439a81265a0f15b74e924e0" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Mon Sep 25 23:31:52 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Tue Sep 26 08:48:51 2006 -0700" }, "message": "[PATCH] zone_reclaim: dynamic slab reclaim\n\nCurrently one can enable slab reclaim by setting an explicit option in\n/proc/sys/vm/zone_reclaim_mode. Slab reclaim is then used as a final\noption if the freeing of unmapped file backed pages is not enough to free\nenough pages to allow a local allocation.\n\nHowever, that means that the slab can grow excessively and that most memory\nof a node may be used by slabs. We have had a case where a machine with\n46GB of memory was using 40-42GB for slab. Zone reclaim was effective in\ndealing with pagecache pages. However, slab reclaim was only done during\nglobal reclaim (which is a bit rare on NUMA systems).\n\nThis patch implements slab reclaim during zone reclaim. Zone reclaim\noccurs if there is a danger of an off node allocation. At that point we\n\n1. Shrink the per node page cache if the number of pagecache\n pages is more than min_unmapped_ratio percent of pages in a zone.\n\n2. Shrink the slab cache if the number of the nodes reclaimable slab pages\n (patch depends on earlier one that implements that counter)\n are more than min_slab_ratio (a new /proc/sys/vm tunable).\n\nThe shrinking of the slab cache is a bit problematic since it is not node\nspecific. So we simply calculate what point in the slab we want to reach\n(current per node slab use minus the number of pages that neeed to be\nallocated) and then repeately run the global reclaim until that is\nunsuccessful or we have reached the limit. I hope we will have zone based\nslab reclaim at some point which will make that easier.\n\nThe default for the min_slab_ratio is 5%\n\nAlso remove the slab option from /proc/sys/vm/zone_reclaim_mode.\n\n[akpm@osdl.org: cleanups]\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": "972d1a7b140569084439a81265a0f15b74e924e0", "tree": "e86e676e407503ef3d98020a88bb925235f11434", "parents": [ "8417bba4b151346ed475fcc923693c9e3be89063" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Mon Sep 25 23:31:51 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Tue Sep 26 08:48:51 2006 -0700" }, "message": "[PATCH] ZVC: Support NR_SLAB_RECLAIMABLE / NR_SLAB_UNRECLAIMABLE\n\nRemove the atomic counter for slab_reclaim_pages and replace the counter\nand NR_SLAB with two ZVC counter that account for unreclaimable and\nreclaimable slab pages: NR_SLAB_RECLAIMABLE and NR_SLAB_UNRECLAIMABLE.\n\nChange the check in vmscan.c to refer to to NR_SLAB_RECLAIMABLE. The\nintend seems to be to check for slab pages that could be freed.\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": "8417bba4b151346ed475fcc923693c9e3be89063", "tree": "93d559e32bc76077c1f837aed09a5df56849c610", "parents": [ "d00bcc98d7ec2c87391c9d9e1cca519ef64d33ef" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Mon Sep 25 23:31:51 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Tue Sep 26 08:48:51 2006 -0700" }, "message": "[PATCH] Replace min_unmapped_ratio by min_unmapped_pages in struct zone\n\n*_pages is a better description of the role of the variable.\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": "39bbcb8f88154c4ac9853baf3f1134af4c987517", "tree": "79f9867ead896c28d138545089e6d85db426c09f", "parents": [ "006d22d9bbb7e66279ba5cc4556b54eeaf8fd556" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Mon Sep 25 23:31:49 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Tue Sep 26 08:48:51 2006 -0700" }, "message": "[PATCH] mm: do not check unpopulated zones for draining and counter updates\n\nIf a zone is unpopulated then we do not need to check for pages that are to\nbe drained and also not for vm counters that may need to be updated.\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": "006d22d9bbb7e66279ba5cc4556b54eeaf8fd556", "tree": "5af5a6676af234db8836bb1e3ef71e6cf8ccb0a9", "parents": [ "46a82b2d5591335277ed2930611f6acb4ce654ed" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Mon Sep 25 23:31:48 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Tue Sep 26 08:48:51 2006 -0700" }, "message": "[PATCH] Optimize free_one_page\n\nFree one_page currently adds the page to a fake list and calls\nfree_page_bulk. Fee_page_bulk takes it off again and then calles\n__free_one_page.\n\nMake free_one_page go directly to __free_one_page. Saves list on / off and\na temporary list in free_one_page for higher ordered pages.\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": "1192d526412b1b8ccb1493064cea06efc12c772b", "tree": "8caa9e73ae1ead8d057ca6d273ed091c324e9ef9", "parents": [ "bd1b1677b5d4f39deda068bf5cc43ce3aaec839f" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Mon Sep 25 23:31:45 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Tue Sep 26 08:48:50 2006 -0700" }, "message": "[PATCH] Cleanup: Add zone pointer to get_page_from_freelist\n\nThere are frequent references to *z in get_page_from_freelist.\n\nAdd an explicit zone variable that can be used in all these places.\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": "9b819d204cf602eab1a53a9ec4b8d2ca51e02a1d", "tree": "9442bf01a00a93a8ae54462fb4878588e1b2a6bf", "parents": [ "056c62418cc639bf2fe962c6a6ee56054b838bc7" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Mon Sep 25 23:31:40 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Tue Sep 26 08:48:50 2006 -0700" }, "message": "[PATCH] Add __GFP_THISNODE to avoid fallback to other nodes and ignore cpuset/memory policy restrictions\n\nAdd a new gfp flag __GFP_THISNODE to avoid fallback to other nodes. This\nflag is essential if a kernel component requires memory to be located on a\ncertain node. It will be needed for alloc_pages_node() to force allocation\non the indicated node and for alloc_pages() to force allocation on the\ncurrent node.\n\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nCc: Andy Whitcroft \u003capw@shadowen.org\u003e\nCc: Mel Gorman \u003cmel@csn.ul.ie\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "19655d3487001d7df0e10e9cbfc27c758b77c2b5", "tree": "8d0aaa216bd32bd64e3a9652fd34d40bdb9d1075", "parents": [ "2f6726e54a9410e2e4cee864947c05e954051916" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Mon Sep 25 23:31:19 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Tue Sep 26 08:48:47 2006 -0700" }, "message": "[PATCH] linearly index zone-\u003enode_zonelists[]\n\nI wonder why we need this bitmask indexing into zone-\u003enode_zonelists[]?\n\nWe always start with the highest zone and then include all lower zones\nif we build zonelists.\n\nAre there really cases where we need allocation from ZONE_DMA or\nZONE_HIGHMEM but not ZONE_NORMAL? It seems that the current implementation\nof highest_zone() makes that already impossible.\n\nIf we go linear on the index then gfp_zone() \u003d\u003d highest_zone() and a lot\nof definitions fall by the wayside.\n\nWe can now revert back to the use of gfp_zone() in mempolicy.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": "2f6726e54a9410e2e4cee864947c05e954051916", "tree": "91b1173dead0cfc4a25caacb34b6c80f526bbc59", "parents": [ "4e4785bcf0c8503224fa6c17d8e0228de781bff6" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Mon Sep 25 23:31:18 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Tue Sep 26 08:48:47 2006 -0700" }, "message": "[PATCH] Apply type enum zone_type\n\nAfter we have done this we can now do some typing cleanup.\n\nThe memory policy layer keeps a policy_zone that specifies\nthe zone that gets memory policies applied. This variable\ncan now be of type enum zone_type.\n\nThe check_highest_zone function and the build_zonelists funnctionm must\nthen also take a enum zone_type parameter.\n\nPlus there are a number of loops over zones that also should use\nzone_type.\n\nWe run into some troubles at some points with functions that need a\nzone_type variable to become -1. Fix that up.\n\n[pj@sgi.com: fix set_mempolicy() crash]\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\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": "4e4785bcf0c8503224fa6c17d8e0228de781bff6", "tree": "002c0a051f7f4de4548ca0a8394b664f64c63627", "parents": [ "b9b15780f808efa2c897f337644ba7a2bec03ecc" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Mon Sep 25 23:31:17 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Tue Sep 26 08:48:47 2006 -0700" }, "message": "[PATCH] mempolicies: fix policy_zone check\n\nThere is a check in zonelist_policy that compares pieces of the bitmap\nobtained from a gfp mask via GFP_ZONETYPES with a zone number in function\nzonelist_policy().\n\nThe bitmap is an ORed mask of __GFP_DMA, __GFP_DMA32 and __GFP_HIGHMEM.\nThe policy_zone is a zone number with the possible values of ZONE_DMA,\nZONE_DMA32, ZONE_HIGHMEM and ZONE_NORMAL. These are two different domains\nof values.\n\nFor some reason seemed to work before the zone reduction patchset (It\ndefinitely works on SGI boxes since we just have one zone and the check\ncannot fail).\n\nWith the zone reduction patchset this check definitely fails on systems\nwith two zones if the system actually has memory in both zones.\n\nThis is because ZONE_NORMAL is selected using no __GFP flag at\nall and thus gfp_zone(gfpmask) \u003d\u003d 0. ZONE_DMA is selected when __GFP_DMA\nis set. __GFP_DMA is 0x01. So gfp_zone(gfpmask) \u003d\u003d 1.\n\npolicy_zone is set to ZONE_NORMAL (\u003d\u003d1) if ZONE_NORMAL and ZONE_DMA are\npopulated.\n\nFor ZONE_NORMAL gfp_zone(\u003cno _GFP_DMA\u003e) yields 0 which is \u003c\npolicy_zone(ZONE_NORMAL) and so policy is not applied to regular memory\nallocations!\n\nInstead gfp_zone(__GFP_DMA) \u003d\u003d 1 which results in policy being applied\nto DMA allocations!\n\nWhat we realy want in that place is to establish the highest allowable\nzone for a given gfp_mask. If the highest zone is higher or equal to the\npolicy_zone then memory policies need to be applied. We have such\na highest_zone() function in page_alloc.c.\n\nSo move the highest_zone() function from mm/page_alloc.c into\ninclude/linux/gfp.h. On the way we simplify the function and use the new\nzone_type that was also introduced with the zone reduction patchset plus we\nalso specify the right type for the gfp flags parameter.\n\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nSigned-off-by: Lee Schermerhorn \u003cLee.Schermerhorn@hp.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "e53ef38d05dd59ed281a35590e4a5b64d8ff4c52", "tree": "42e525df84454e89abd6cab8d7983a6a0188b6bb", "parents": [ "fb0e7942bdcbbd2f90e61cb4cfa4fa892a873f8a" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Mon Sep 25 23:31:14 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Tue Sep 26 08:48:46 2006 -0700" }, "message": "[PATCH] reduce MAX_NR_ZONES: make ZONE_HIGHMEM optional\n\nMake ZONE_HIGHMEM optional\n\n- ifdef out code and definitions related to CONFIG_HIGHMEM\n\n- __GFP_HIGHMEM falls back to normal allocations if there is no\n ZONE_HIGHMEM\n\n- GFP_ZONEMASK becomes 0x01 if there is no DMA32 and no HIGHMEM\n zone.\n\n[jdike@addtoit.com: build fix]\nSigned-off-by: Jeff Dike \u003cjdike@addtoit.com\u003e\nSigned-off-by: Christoph Lameter \u003cclameter@engr.sgi.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "fb0e7942bdcbbd2f90e61cb4cfa4fa892a873f8a", "tree": "71344e9afafbd631f4ac010bc8c48e0b16737299", "parents": [ "2f1b6248682f8b39ca3c7e549dfc216d26c4109b" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Mon Sep 25 23:31:13 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Tue Sep 26 08:48:46 2006 -0700" }, "message": "[PATCH] reduce MAX_NR_ZONES: make ZONE_DMA32 optional\n\nMake ZONE_DMA32 optional\n\n- Add #ifdefs around ZONE_DMA32 specific code and definitions.\n\n- Add CONFIG_ZONE_DMA32 config option and use that for x86_64\n that alone needs this zone.\n\n- Remove the use of CONFIG_DMA_IS_DMA32 and CONFIG_DMA_IS_NORMAL\n for ia64 and fix up the way per node ZVCs are calculated.\n\n- Fall back to prior GFP_ZONEMASK of 0x03 if there is no\n DMA32 zone.\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": "2f1b6248682f8b39ca3c7e549dfc216d26c4109b", "tree": "2340347d10fd0e564fb8527efe3ffbcb216e1906", "parents": [ "98d2b0ebda72fc39cdefd3720d50b9b3ce409085" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Mon Sep 25 23:31:13 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Tue Sep 26 08:48:46 2006 -0700" }, "message": "[PATCH] reduce MAX_NR_ZONES: use enum to define zones, reformat and comment\n\nUse enum for zones and reformat zones dependent information\n\nAdd comments explaning the use of zones and add a zones_t type for zone\nnumbers.\n\nLine up information that will be #ifdefd by the following patches.\n\n[akpm@osdl.org: comment cleanups]\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": "98d2b0ebda72fc39cdefd3720d50b9b3ce409085", "tree": "ce51d8a2eab039c25667e6c448d5393582065d14", "parents": [ "c1f60a5a419cc60aff27daffb150f5a3a3a79ef4" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Mon Sep 25 23:31:12 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Tue Sep 26 08:48:46 2006 -0700" }, "message": "[PATCH] reduce MAX_NR_ZONES: page allocator ZONE_HIGHMEM cleanup\n\npage allocator ZONE_HIGHMEM fixups\n\n1. We do not need to do an #ifdef in si_meminfo since both counters\n in use are zero if !CONFIG_HIGHMEM.\n\n2. Add #ifdef in si_meminfo_node instead to avoid referencing zone\n information for ZONE_HIGHMEM if we do not have HIGHMEM\n (may not be there after the following patches).\n\n3. Replace the use of ZONE_HIGHMEM with MAX_NR_ZONES in build_zonelists_node\n\n4. build_zonelists_node: Remove BUG_ON for ZONE_HIGHMEM. Zone will\n be optional soon and thus BUG_ON cannot be triggered anymore.\n\n5. init_free_area_core: Replace a use of ZONE_HIGHMEM with NR_MAX_ZONES.\n\n[akpm@osdl.org: cleanups]\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": "c1f60a5a419cc60aff27daffb150f5a3a3a79ef4", "tree": "8ae176462d6f220cd744ae6c3454113eebda02a8", "parents": [ "182e8e237349e7b6354f45aee4780b6423fd6a50" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Mon Sep 25 23:31:11 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Tue Sep 26 08:48:46 2006 -0700" }, "message": "[PATCH] reduce MAX_NR_ZONES: move HIGHMEM counters into highmem.c/.h\n\nMove totalhigh_pages and nr_free_highpages() into highmem.c/.h\n\nMove the totalhigh_pages definition into highmem.c/.h. Move the\nnr_free_highpages function into highmem.c\n\n[yoichi_yuasa@tripeaks.co.jp: build fix]\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nSigned-off-by: Yoichi Yuasa \u003cyoichi_yuasa@tripeaks.co.jp\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "182e8e237349e7b6354f45aee4780b6423fd6a50", "tree": "a1b9fc186a514e547eb257803616d67ba7b69976", "parents": [ "f06a96844a577c43249fce25809a4fae07407f46" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Mon Sep 25 23:31:10 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Tue Sep 26 08:48:46 2006 -0700" }, "message": "[PATCH] reduce MAX_NR_ZONES: make display of highmem counters conditional on CONFIG_HIGHMEM\n\nDo not display HIGHMEM memory sizes if CONFIG_HIGHMEM is not set.\n\nMake HIGHMEM dependent texts and make display of highmem counters optional\n\nSome texts are depending on CONFIG_HIGHMEM.\n\nRemove those strings and remove the display of highmem counter values if\nCONFIG_HIGHMEM is not set.\n\n[akpm@osdl.org: remove some ifdefs]\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": "725d704ecaca4a43f067092c140d4f3271cf2856", "tree": "320cf8ab5457ac6c01c05da8c30d6026538ee259", "parents": [ "a6ca1b99ed434f3fb41bbed647ed36c0420501e5" ], "author": { "name": "Nick Piggin", "email": "npiggin@suse.de", "time": "Mon Sep 25 23:30:55 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Tue Sep 26 08:48:44 2006 -0700" }, "message": "[PATCH] mm: VM_BUG_ON\n\nIntroduce a VM_BUG_ON, which is turned on with CONFIG_DEBUG_VM. Use this\nin the lightweight, inline refcounting functions; PageLRU and PageActive\nchecks in vmscan, because they\u0027re pretty well confined to vmscan. And in\npage allocate/free fastpaths which can be the hottest parts of the kernel\nfor kbuilds.\n\nUnlike BUG_ON, VM_BUG_ON must not be used to execute statements with\nside-effects, and should not be used outside core mm code.\n\nSigned-off-by: Nick Piggin \u003cnpiggin@suse.de\u003e\nCc: Hugh Dickins \u003chugh@veritas.com\u003e\nCc: Christoph Lameter \u003cclameter@engr.sgi.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "f3ef9ead31ae995251b420ac98398bd7545bf4e1", "tree": "aa5addbe49c1f7864bc2e5023b7edb11aaf3706b", "parents": [ "24fd425edd53ea580cad917e825c1f6715e9b939" ], "author": { "name": "David Rientjes", "email": "rientjes@cs.washington.edu", "time": "Mon Sep 25 16:24:57 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Mon Sep 25 17:38:36 2006 -0700" }, "message": "[PATCH] do not free non slab allocated per_cpu_pageset\n\nStops panic associated with attempting to free a non slab-allocated\nper_cpu_pageset.\n\nSigned-off-by: David Rientjes \u003crientjes@cs.washington.edu\u003e\nAcked-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nCc: \u003cstable@kernel.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "f034b5d4efdfe0fb9e2a1ce1d95fa7914f24de49", "tree": "e166f1e87606f7e53a78cac543284c3484481727", "parents": [ "8f126e37c0b250310a48a609bedf92a19a5559ec" ], "author": { "name": "David S. Miller", "email": "davem@sunset.davemloft.net", "time": "Thu Aug 24 03:08:07 2006 -0700" }, "committer": { "name": "David S. Miller", "email": "davem@sunset.davemloft.net", "time": "Fri Sep 22 15:08:41 2006 -0700" }, "message": "[XFRM]: Dynamic xfrm_state hash table sizing.\n\nThe grow algorithm is simple, we grow if:\n\n1) we see a hash chain collision at insert, and\n2) we haven\u0027t hit the hash size limit (currently 1*1024*1024 slots), and\n3) the number of xfrm_state objects is \u003e the current hash mask\n\nAll of this needs some tweaking.\n\nRemove __initdata from \"hashdist\" so we can use it safely at run time.\n\nSigned-off-by: David S. Miller \u003cdavem@davemloft.net\u003e\n" }, { "commit": "9614634fe6a138fd8ae044950700d2af8d203f97", "tree": "9b020c1d36d8625f4048c057058efb2e17c81973", "parents": [ "cb6358eb69d9854f65f2979c0ce9280eee041828" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Mon Jul 03 00:24:13 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Mon Jul 03 15:26:59 2006 -0700" }, "message": "[PATCH] ZVC/zone_reclaim: Leave 1% of unmapped pagecache pages for file I/O\n\nIt turns out that it is advantageous to leave a small portion of unmapped file\nbacked pages if all of a zone\u0027s pages (or almost all pages) are allocated and\nso the page allocator has to go off-node.\n\nThis allows recently used file I/O buffers to stay on the node and\nreduces the times that zone reclaim is invoked if file I/O occurs\nwhen we run out of memory in a zone.\n\nThe problem is that zone reclaim runs too frequently when the page cache is\nused for file I/O (read write and therefore unmapped pages!) alone and we have\nalmost all pages of the zone allocated. Zone reclaim may remove 32 unmapped\npages. File I/O will use these pages for the next read/write requests and the\nunmapped pages increase. After the zone has filled up again zone reclaim will\nremove it again after only 32 pages. This cycle is too inefficient and there\nare potentially too many zone reclaim cycles.\n\nWith the 1% boundary we may still remove all unmapped pages for file I/O in\nzone reclaim pass. However. it will take a large number of read and writes\nto get back to 1% again where we trigger zone reclaim again.\n\nThe zone reclaim 2.6.16/17 does not show this behavior because we have a 30\nsecond timeout.\n\n[akpm@osdl.org: rename the /proc file and the variable]\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": "22a3e233ca08a2ddc949ba1ae8f6e16ec7ef1a13", "tree": "7ef158ba2c30e0dde2dc103d1904fae243759a6b", "parents": [ "39302175c26d74be35715c05a0f342c9e64c21bf", "6ab3d5624e172c553004ecc862bfeac16d9d68b7" ], "author": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Fri Jun 30 15:39:30 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Fri Jun 30 15:39:30 2006 -0700" }, "message": "Merge git://git.kernel.org/pub/scm/linux/kernel/git/bunk/trivial\n\n* git://git.kernel.org/pub/scm/linux/kernel/git/bunk/trivial:\n Remove obsolete #include \u003clinux/config.h\u003e\n remove obsolete swsusp_encrypt\n arch/arm26/Kconfig typos\n Documentation/IPMI typos\n Kconfig: Typos in net/sched/Kconfig\n v9fs: do not include linux/version.h\n Documentation/DocBook/mtdnand.tmpl: typo fixes\n typo fixes: specfic -\u003e specific\n typo fixes in Documentation/networking/pktgen.txt\n typo fixes: occuring -\u003e occurring\n typo fixes: infomation -\u003e information\n typo fixes: disadvantadge -\u003e disadvantage\n typo fixes: aquire -\u003e acquire\n typo fixes: mecanism -\u003e mechanism\n typo fixes: bandwith -\u003e bandwidth\n fix a typo in the RTC_CLASS help text\n smb is no longer maintained\n\nManually merged trivial conflict in arch/um/kernel/vmlinux.lds.S\n" }, { "commit": "f8891e5e1f93a128c3900f82035e8541357896a7", "tree": "97b078ac97970962b17c85d39fd64cb48dc01168", "parents": [ "ca889e6c45e0b112cb2ca9d35afc66297519b5d5" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Fri Jun 30 01:55:45 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Fri Jun 30 11:25:36 2006 -0700" }, "message": "[PATCH] Light weight event counters\n\nThe remaining counters in page_state after the zoned VM counter patches\nhave been applied are all just for show in /proc/vmstat. They have no\nessential function for the VM.\n\nWe use a simple increment of per cpu variables. In order to avoid the most\nsevere races we disable preempt. Preempt does not prevent the race between\nan increment and an interrupt handler incrementing the same statistics\ncounter. However, that race is exceedingly rare, we may only loose one\nincrement or so and there is no requirement (at least not in kernel) that\nthe vm event counters have to be accurate.\n\nIn the non preempt case this results in a simple increment for each\ncounter. For many architectures this will be reduced by the compiler to a\nsingle instruction. This single instruction is atomic for i386 and x86_64.\n And therefore even the rare race condition in an interrupt is avoided for\nboth architectures in most cases.\n\nThe patchset also adds an off switch for embedded systems that allows a\nbuilding of linux kernels without these counters.\n\nThe implementation of these counters is through inline code that hopefully\nresults in only a single instruction increment instruction being emitted\n(i386, x86_64) or in the increment being hidden though instruction\nconcurrency (EPIC architectures such as ia64 can get that done).\n\nBenefits:\n- VM event counter operations usually reduce to a single inline instruction\n on i386 and x86_64.\n- No interrupt disable, only preempt disable for the preempt case.\n Preempt disable can also be avoided by moving the counter into a spinlock.\n- Handling is similar to zoned VM counters.\n- Simple and easily extendable.\n- Can be omitted to reduce memory use for embedded use.\n\nReferences:\n\nRFC http://marc.theaimsgroup.com/?l\u003dlinux-kernel\u0026m\u003d113512330605497\u0026w\u003d2\nRFC http://marc.theaimsgroup.com/?l\u003dlinux-kernel\u0026m\u003d114988082814934\u0026w\u003d2\nlocal_t http://marc.theaimsgroup.com/?l\u003dlinux-kernel\u0026m\u003d114991748606690\u0026w\u003d2\nV2 http://marc.theaimsgroup.com/?t\u003d115014808400007\u0026r\u003d1\u0026w\u003d2\nV3 http://marc.theaimsgroup.com/?l\u003dlinux-kernel\u0026m\u003d115024767022346\u0026w\u003d2\nV4 http://marc.theaimsgroup.com/?l\u003dlinux-kernel\u0026m\u003d115047968808926\u0026w\u003d2\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": "ca889e6c45e0b112cb2ca9d35afc66297519b5d5", "tree": "0a5efdec2a61540204d34bcbf56dc691d8f9c391", "parents": [ "bab1846a0582f627f5ec22aa2dc5f4f3e82e8176" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Fri Jun 30 01:55:44 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Fri Jun 30 11:25:36 2006 -0700" }, "message": "[PATCH] Use Zoned VM Counters for NUMA statistics\n\nThe numa statistics are really event counters. But they are per node and\nso we have had special treatment for these counters through additional\nfields on the pcp structure. We can now use the per zone nature of the\nzoned VM counters to realize these.\n\nThis will shrink the size of the pcp structure on NUMA systems. We will\nhave some room to add additional per zone counters that will all still fit\nin the same cacheline.\n\n Bits\tPrior pcp size\t \tSize after patch\tWe can add\n ------------------------------------------------------------------\n 64\t128 bytes (16 words)\t80 bytes (10 words)\t48\n 32\t 76 bytes (19 words)\t56 bytes (14 words)\t8 (64 byte cacheline)\n\t\t\t\t\t\t\t72 (128 byte)\n\nRemove the special statistics for numa and replace them with zoned vm\ncounters. This has the side effect that global sums of these events now\nshow up in /proc/vmstat.\n\nAlso take the opportunity to move the zone_statistics() function from\npage_alloc.c into vmstat.c.\n\nDiscussions:\nV2 http://marc.theaimsgroup.com/?t\u003d115048227000002\u0026r\u003d1\u0026w\u003d2\n\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nAcked-by: Andi Kleen \u003cak@suse.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "fd39fc8561be33065306bdac0e30414e1e8ac8e1", "tree": "ae0740716eed3f850a8f7232c61caebe360bb5ae", "parents": [ "ce866b34ae1b7f1ce60234cf65855886ac7e7d30" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Fri Jun 30 01:55:40 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Fri Jun 30 11:25:36 2006 -0700" }, "message": "[PATCH] zoned vm counters: conversion of nr_unstable to per zone counter\n\nConversion of nr_unstable to a per zone counter\n\nWe need to do some special modifications to the nfs code since there are\nmultiple cases of disposition and we need to have a page ref for proper\naccounting.\n\nThis converts the last critical page state of the VM and therefore we need to\nremove several functions that were depending on GET_PAGE_STATE_LAST in order\nto make the kernel compile again. We are only left with event type counters\nin page state.\n\n[akpm@osdl.org: bugfixes]\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nCc: Trond Myklebust \u003ctrond.myklebust@fys.uio.no\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "ce866b34ae1b7f1ce60234cf65855886ac7e7d30", "tree": "e9a2664f0abc5221b9a92e1417d8e02b94a634c4", "parents": [ "b1e7a8fd854d2f895730e82137400012b509650e" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Fri Jun 30 01:55:40 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Fri Jun 30 11:25:35 2006 -0700" }, "message": "[PATCH] zoned vm counters: conversion of nr_writeback to per zone counter\n\nConversion of nr_writeback to per zone counter.\n\nThis removes the last page_state counter from arch/i386/mm/pgtable.c so we\ndrop the page_state from there.\n\n[akpm@osdl.org: bugfix]\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nCc: Trond Myklebust \u003ctrond.myklebust@fys.uio.no\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "b1e7a8fd854d2f895730e82137400012b509650e", "tree": "9fba87ff6b0146ebd4ee5bc7d5f0c8b037dbb3ad", "parents": [ "df849a1529c106f7460e51479ca78fe07b07dc8c" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Fri Jun 30 01:55:39 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Fri Jun 30 11:25:35 2006 -0700" }, "message": "[PATCH] zoned vm counters: conversion of nr_dirty to per zone counter\n\nThis makes nr_dirty a per zone counter. Looping over all processors is\navoided during writeback state determination.\n\nThe counter aggregation for nr_dirty had to be undone in the NFS layer since\nwe summed up the page counts from multiple zones. Someone more familiar with\nNFS should probably review what I have done.\n\n[akpm@osdl.org: bugfix]\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nCc: Trond Myklebust \u003ctrond.myklebust@fys.uio.no\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "df849a1529c106f7460e51479ca78fe07b07dc8c", "tree": "f0e52e4720160aa7540a57715c247dce44584cbc", "parents": [ "9a865ffa34b6117a5e0b67640a084d8c2e198c93" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Fri Jun 30 01:55:38 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Fri Jun 30 11:25:35 2006 -0700" }, "message": "[PATCH] zoned vm counters: conversion of nr_pagetables to per zone counter\n\nConversion of nr_page_table_pages to a per zone counter\n\n[akpm@osdl.org: bugfix]\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": "9a865ffa34b6117a5e0b67640a084d8c2e198c93", "tree": "c295d5a0831df81eeeded3834f32f513b9ae05c7", "parents": [ "34aa1330f9b3c5783d269851d467326525207422" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Fri Jun 30 01:55:38 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Fri Jun 30 11:25:35 2006 -0700" }, "message": "[PATCH] zoned vm counters: conversion of nr_slab to per zone counter\n\n- Allows reclaim to access counter without looping over processor counts.\n\n- Allows accurate statistics on how many pages are used in a zone by\n the slab. This may become useful to balance slab allocations over\n various zones.\n\n[akpm@osdl.org: bugfix]\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": "347ce434d57da80fd5809c0c836f206a50999c26", "tree": "f730d151be77977f594e5cc083a93bbeb4c602cc", "parents": [ "65ba55f500a37272985d071c9bbb35256a2f7c14" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Fri Jun 30 01:55:35 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Fri Jun 30 11:25:34 2006 -0700" }, "message": "[PATCH] zoned vm counters: conversion of nr_pagecache to per zone counter\n\nCurrently a single atomic variable is used to establish the size of the page\ncache in the whole machine. The zoned VM counters have the same method of\nimplementation as the nr_pagecache code but also allow the determination of\nthe pagecache size per zone.\n\nRemove the special implementation for nr_pagecache and make it a zoned counter\nnamed NR_FILE_PAGES.\n\nUpdates of the page cache counters are always performed with interrupts off.\nWe can therefore use the __ variant here.\n\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nCc: Trond Myklebust \u003ctrond.myklebust@fys.uio.no\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "65ba55f500a37272985d071c9bbb35256a2f7c14", "tree": "e7735326ef2d2dca9d00a6c5ae47e9eb03c7834f", "parents": [ "2244b95a7bcf8d24196f8a3a44187ba5dfff754c" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Fri Jun 30 01:55:34 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Fri Jun 30 11:25:34 2006 -0700" }, "message": "[PATCH] zoned vm counters: convert nr_mapped to per zone counter\n\nnr_mapped is important because it allows a determination of how many pages of\na zone are not mapped, which would allow a more efficient means of determining\nwhen we need to reclaim memory in a zone.\n\nWe take the nr_mapped field out of the page state structure and define a new\nper zone counter named NR_FILE_MAPPED (the anonymous pages will be split off\nfrom NR_MAPPED in the next patch).\n\nWe replace the use of nr_mapped in various kernel locations. This avoids the\nlooping over all processors in try_to_free_pages(), writeback, reclaim (swap +\nzone reclaim).\n\n[akpm@osdl.org: bugfix]\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nCc: Trond Myklebust \u003ctrond.myklebust@fys.uio.no\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "2244b95a7bcf8d24196f8a3a44187ba5dfff754c", "tree": "771ef8eae45c2794fd73f870109c74d67c28888a", "parents": [ "f6ac2354d791195ca40822b84d73d48a4e8b7f2b" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Fri Jun 30 01:55:33 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Fri Jun 30 11:25:34 2006 -0700" }, "message": "[PATCH] zoned vm counters: basic ZVC (zoned vm counter) implementation\n\nPer zone counter infrastructure\n\nThe counters that we currently have for the VM are split per processor. The\nprocessor however has not much to do with the zone these pages belong to. We\ncannot tell f.e. how many ZONE_DMA pages are dirty.\n\nSo we are blind to potentially inbalances in the usage of memory in various\nzones. F.e. in a NUMA system we cannot tell how many pages are dirty on a\nparticular node. If we knew then we could put measures into the VM to balance\nthe use of memory between different zones and different nodes in a NUMA\nsystem. For example it would be possible to limit the dirty pages per node so\nthat fast local memory is kept available even if a process is dirtying huge\namounts of pages.\n\nAnother example is zone reclaim. We do not know how many unmapped pages exist\nper zone. So we just have to try to reclaim. If it is not working then we\npause and try again later. It would be better if we knew when it makes sense\nto reclaim unmapped pages from a zone. This patchset allows the determination\nof the number of unmapped pages per zone. We can remove the zone reclaim\ninterval with the counters introduced here.\n\nFuthermore the ability to have various usage statistics available will allow\nthe development of new NUMA balancing algorithms that may be able to improve\nthe decision making in the scheduler of when to move a process to another node\nand hopefully will also enable automatic page migration through a user space\nprogram that can analyse the memory load distribution and then rebalance\nmemory use in order to increase performance.\n\nThe counter framework here implements differential counters for each processor\nin struct zone. The differential counters are consolidated when a threshold\nis exceeded (like done in the current implementation for nr_pageache), when\nslab reaping occurs or when a consolidation function is called.\n\nConsolidation uses atomic operations and accumulates counters per zone in the\nzone structure and also globally in the vm_stat array. VM functions can\naccess the counts by simply indexing a global or zone specific array.\n\nThe arrangement of counters in an array also simplifies processing when output\nhas to be generated for /proc/*.\n\nCounters can be updated by calling inc/dec_zone_page_state or\n_inc/dec_zone_page_state analogous to *_page_state. The second group of\nfunctions can be called if it is known that interrupts are disabled.\n\nSpecial optimized increment and decrement functions are provided. These can\navoid certain checks and use increment or decrement instructions that an\narchitecture may provide.\n\nWe also add a new CONFIG_DMA_IS_NORMAL that signifies that an architecture can\ndo DMA to all memory and therefore ZONE_NORMAL will not be populated. This is\nonly currently set for IA64 SGI SN2 and currently only affects\nnode_page_state(). In the best case node_page_state can be reduced to\nretrieving a single counter for the one zone on the node.\n\n[akpm@osdl.org: cleanups]\n[akpm@osdl.org: export vm_stat[] for filesystems]\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nCc: Trond Myklebust \u003ctrond.myklebust@fys.uio.no\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "f6ac2354d791195ca40822b84d73d48a4e8b7f2b", "tree": "5f600175cf3591eac3d32bb8cebfd45d0aabf804", "parents": [ "672b2714ae57af16fe7d760dc4e0918a7a6cb0fa" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Fri Jun 30 01:55:32 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Fri Jun 30 11:25:34 2006 -0700" }, "message": "[PATCH] zoned vm counters: create vmstat.c/.h from page_alloc.c/.h\n\nNOTE: ZVC are *not* the lightweight event counters. ZVCs are reliable whereas\nevent counters do not need to be.\n\nZone based VM statistics are necessary to be able to determine what the state\nof memory in one zone is. In a NUMA system this can be helpful for local\nreclaim and other memory optimizations that may be able to shift VM load in\norder to get more balanced memory use.\n\nIt is also useful to know how the computing load affects the memory\nallocations on various zones. This patchset allows the retrieval of that data\nfrom userspace.\n\nThe patchset introduces a framework for counters that is a cross between the\nexisting page_stats --which are simply global counters split per cpu-- and the\napproach of deferred incremental updates implemented for nr_pagecache.\n\nSmall per cpu 8 bit counters are added to struct zone. If the counter exceeds\ncertain thresholds then the counters are accumulated in an array of\natomic_long in the zone and in a global array that sums up all zone values.\nThe small 8 bit counters are next to the per cpu page pointers and so they\nwill be in high in the cpu cache when pages are allocated and freed.\n\nAccess to VM counter information for a zone and for the whole machine is then\npossible by simply indexing an array (Thanks to Nick Piggin for pointing out\nthat approach). The access to the total number of pages of various types does\nno longer require the summing up of all per cpu counters.\n\nBenefits of this patchset right now:\n\n- Ability for UP and SMP configuration to determine how memory\n is balanced between the DMA, NORMAL and HIGHMEM zones.\n\n- loops over all processors are avoided in writeback and\n reclaim paths. We can avoid caching the writeback information\n because the needed information is directly accessible.\n\n- Special handling for nr_pagecache removed.\n\n- zone_reclaim_interval vanishes since VM stats can now determine\n when it is worth to do local reclaim.\n\n- Fast inline per node page state determination.\n\n- Accurate counters in /sys/devices/system/node/node*/meminfo. Current\n counters are counting simply which processor allocated a page somewhere\n and guestimate based on that. So the counters were not useful to show\n the actual distribution of page use on a specific zone.\n\n- The swap_prefetch patch requires per node statistics in order to\n figure out when processors of a node can prefetch. This patch provides\n some of the needed numbers.\n\n- Detailed VM counters available in more /proc and /sys status files.\n\nReferences to earlier discussions:\nV1 http://marc.theaimsgroup.com/?l\u003dlinux-kernel\u0026m\u003d113511649910826\u0026w\u003d2\nV2 http://marc.theaimsgroup.com/?l\u003dlinux-kernel\u0026m\u003d114980851924230\u0026w\u003d2\nV3 http://marc.theaimsgroup.com/?l\u003dlinux-kernel\u0026m\u003d115014697910351\u0026w\u003d2\nV4 http://marc.theaimsgroup.com/?l\u003dlinux-kernel\u0026m\u003d115024767318740\u0026w\u003d2\n\nPerformance tests with AIM7 did not show any regressions. Seems to be a tad\nfaster even. Tested on ia64/NUMA. Builds fine on i386, SMP / UP. Includes\nfixes for s390/arm/uml arch code.\n\nThis patch:\n\nMove counter code from page_alloc.c/page-flags.h to vmstat.c/h.\n\nCreate vmstat.c/vmstat.h by separating the counter code and the proc\nfunctions.\n\nMove the vm_stat_text array before zoneinfo_show.\n\n[akpm@osdl.org: s390 build fix]\n[akpm@osdl.org: HOTPLUG_CPU build fix]\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nCc: Heiko Carstens \u003cheiko.carstens@de.ibm.com\u003e\nCc: Martin Schwidefsky \u003cschwidefsky@de.ibm.com\u003e\nCc: Trond Myklebust \u003ctrond.myklebust@fys.uio.no\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "6ab3d5624e172c553004ecc862bfeac16d9d68b7", "tree": "6d98881fe91fd9583c109208d5c27131b93fa248", "parents": [ "e02169b682bc448ccdc819dc8639ed34a23cedd8" ], "author": { "name": "Jörn Engel", "email": "joern@wohnheim.fh-wedel.de", "time": "Fri Jun 30 19:25:36 2006 +0200" }, "committer": { "name": "Adrian Bunk", "email": "bunk@stusta.de", "time": "Fri Jun 30 19:25:36 2006 +0200" }, "message": "Remove obsolete #include \u003clinux/config.h\u003e\n\nSigned-off-by: Jörn Engel \u003cjoern@wohnheim.fh-wedel.de\u003e\nSigned-off-by: Adrian Bunk \u003cbunk@stusta.de\u003e\n" }, { "commit": "f9b8404cf8f8456dfa83459510762b700dc00385", "tree": "f74b54c79ee3913d587644195d8af7ba13b6cc2a", "parents": [ "6abdce7680e3e8436b3292b345d77b67d5ec9ea8" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Tue Jun 27 02:54:49 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Tue Jun 27 17:32:46 2006 -0700" }, "message": "[PATCH] pi-futex: introduce debug_check_no_locks_freed()\n\nAdd debug_check_no_locks_freed(), as a central inline to add\nbad-lock-free-debugging functionality to.\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\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": "74b85f3790aa2550c617fe14439482e13e615fa0", "tree": "125e9c503d483c304e111ca825358bd81e0610cd", "parents": [ "65edc68c345cbe21d0b0375c3452a3ed5e322868" ], "author": { "name": "Chandra Seetharaman", "email": "sekharan@us.ibm.com", "time": "Tue Jun 27 02:54:09 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Tue Jun 27 17:32:41 2006 -0700" }, "message": "[PATCH] cpu hotplug: make cpu_notifier related notifier blocks __cpuinit only\n\nMake notifier_blocks associated with cpu_notifier as __cpuinitdata.\n\n__cpuinitdata makes sure that the data is init time only unless\nCONFIG_HOTPLUG_CPU is defined.\n\nSigned-off-by: Chandra Seetharaman \u003csekharan@us.ibm.com\u003e\nCc: Ashok Raj \u003cashok.raj@intel.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "9c7b216d23e820e0e148d5be01bbb5bd2d8378fe", "tree": "53e6c1e4870db49b4999b4053862d3f63375773f", "parents": [ "6ac12dfe9c2027cd3c5ed603f11d1bb4f04906fe" ], "author": { "name": "Chandra Seetharaman", "email": "sekharan@us.ibm.com", "time": "Tue Jun 27 02:54:07 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Tue Jun 27 17:32:40 2006 -0700" }, "message": "[PATCH] cpu hotplug: revert init patch submitted for 2.6.17\n\nIn 2.6.17, there was a problem with cpu_notifiers and XFS. I provided a\nband-aid solution to solve that problem. In the process, i undid all the\nchanges you both were making to ensure that these notifiers were available\nonly at init time (unless CONFIG_HOTPLUG_CPU is defined).\n\nWe deferred the real fix to 2.6.18. Here is a set of patches that fixes the\nXFS problem cleanly and makes the cpu notifiers available only at init time\n(unless CONFIG_HOTPLUG_CPU is defined).\n\nIf CONFIG_HOTPLUG_CPU is defined then cpu notifiers are available at run\ntime.\n\nThis patch reverts the notifier_call changes made in 2.6.17\n\nSigned-off-by: Chandra Seetharaman \u003csekharan@us.ibm.com\u003e\nCc: Ashok Raj \u003cashok.raj@intel.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "d6e05edc59ecd79e8badf440c0d295a979bdfa3e", "tree": "50362161f69317242ab603c51a18a818a4c93285", "parents": [ "f18190bd3407554ba6df30a1927e07e6cba93e56" ], "author": { "name": "Andreas Mohr", "email": "andi@lisas.de", "time": "Mon Jun 26 18:35:02 2006 +0200" }, "committer": { "name": "Adrian Bunk", "email": "bunk@stusta.de", "time": "Mon Jun 26 18:35:02 2006 +0200" }, "message": "spelling fixes\n\nacquired (aquired)\ncontiguous (contigious)\nsuccessful (succesful, succesfull)\nsurprise (suprise)\nwhether (weather)\nsome other misspellings\n\nSigned-off-by: Andreas Mohr \u003candi@lisas.de\u003e\nSigned-off-by: Adrian Bunk \u003cbunk@stusta.de\u003e\n" }, { "commit": "43b0bc00fdbf2f1503a57f0c2c1338438c5d2805", "tree": "1009ac1c764b21c50f96e2a108a2736504d9588a", "parents": [ "dc851a0fd2736e8dc3e90bd990cb911a0013da67" ], "author": { "name": "Chris Wright", "email": "chrisw@sous-sol.org", "time": "Sun Jun 25 05:47:55 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Sun Jun 25 10:01:08 2006 -0700" }, "message": "[PATCH] cpuset: remove extra cpuset_zone_allowed check in __alloc_pages\n\nThis is redundant with check in wakeup_kswapd.\n\nSigned-off-by: Chris Wright \u003cchrisw@sous-sol.org\u003e\nAcked-by: Paul Jackson \u003cpj@sgi.com\u003e\nAcked-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": "8f9de51a4a98ba32f839903b7d009788bc2c295d", "tree": "65cde3cd75bfc1df172f53ca956cba4fa4954a4e", "parents": [ "d501e62bc7796e90b0312648e23ac39490dfbf87" ], "author": { "name": "Kirill Korotaev", "email": "dev@openvz.org", "time": "Fri Jun 23 02:03:50 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Fri Jun 23 07:42:52 2006 -0700" }, "message": "[PATCH] printk() should not be called under zone-\u003elock\n\nThis patch fixes printk() under zone-\u003elock in show_free_areas(). It can be\nunsafe to call printk() under this lock, since caller can try to\nallocate/free some memory and selfdeadlock on this lock. I found\nallocations/freeing mem both in netconsole and serial console.\n\nThis issue was faced in reallity when meminfo was periodically printed for\ndebug purposes and netconsole was used.\n\nSigned-off-by: Kirill Korotaev \u003cdev@openvz.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "bd1e22b8e0a90f9a91e4c27db14ca15773659bf7", "tree": "8d32bdc39977af9dd3ba577b1fa34c0106b7f18e", "parents": [ "e0a42726794f71336ff4b26084d453dd597471ce" ], "author": { "name": "Andrew Morton", "email": "akpm@osdl.org", "time": "Fri Jun 23 02:03:47 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Fri Jun 23 07:42:52 2006 -0700" }, "message": "[PATCH] initialise total_memory() earlier\n\nInitialise total_memory earlier in boot. Because if for some reason we run\npage reclaim early in boot, we don\u0027t want total_memory to be zero when we use\nit as a divisor.\n\nAnd rename total_memory to vm_total_pages to avoid naming clashes with\narchitectures.\n\nCc: Yasunori Goto \u003cy-goto@jp.fujitsu.com\u003e\nCc: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nCc: Martin Bligh \u003cmbligh@google.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "67de648211fa041fe08a0c25241a4980bbb90698", "tree": "94f737e0fed7c40dc59e94f05d6851e490082068", "parents": [ "6811378e7d8b9aa4fca2a1ca73d24c9d67c9cb12" ], "author": { "name": "Andy Whitcroft", "email": "apw@shadowen.org", "time": "Fri Jun 23 02:03:12 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Fri Jun 23 07:42:47 2006 -0700" }, "message": "[PATCH] squash duplicate page_to_pfn and pfn_to_page\n\nWe have architectures where the size of page_to_pfn and pfn_to_page are\nsignificant enough to overall image size that they wish to push them out of\nline. However, in the process we have grown a second copy of the\nimplementation of each of these routines for each memory model. Share the\nimplmentation exposing it either inline or out-of-line as required.\n\nSigned-off-by: Andy Whitcroft \u003capw@shadowen.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "6811378e7d8b9aa4fca2a1ca73d24c9d67c9cb12", "tree": "37f2f5a2bf2e60848a571f8f43685c7406d7b238", "parents": [ "cca448fe92246fb59efe55ba2e048ded0971a9af" ], "author": { "name": "Yasunori Goto", "email": "y-goto@jp.fujitsu.com", "time": "Fri Jun 23 02:03:11 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Fri Jun 23 07:42:46 2006 -0700" }, "message": "[PATCH] wait_table and zonelist initializing for memory hotadd: update zonelists\n\nIn current code, zonelist is considered to be build once, no modification.\nBut MemoryHotplug can add new zone/pgdat. It must be updated.\n\nThis patch modifies build_all_zonelists(). By this, build_all_zonelist() can\nreconfig pgdat\u0027s zonelists.\n\nTo update them safety, this patch use stop_machine_run(). Other cpus don\u0027t\ntouch among updating them by using it.\n\nIn old version (V2 of node hotadd), kernel updated them after zone\ninitialization. But present_page of its new zone is still 0, because\nonline_page() is not called yet at this time. Build_zonelists() checks\npresent_pages to find present zone. It was too early. So, I changed it after\nonline_pages().\n\nSigned-off-by: Yasunori Goto \u003cy-goto@jp.fujitsu.com\u003e\nSigned-off-by: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "cca448fe92246fb59efe55ba2e048ded0971a9af", "tree": "9663651686508b62a061851927f0b330200c40b1", "parents": [ "718127cc3170454f4aa274fdd2f1e01574fecd66" ], "author": { "name": "Yasunori Goto", "email": "y-goto@jp.fujitsu.com", "time": "Fri Jun 23 02:03:10 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Fri Jun 23 07:42:46 2006 -0700" }, "message": "[PATCH] wait_table and zonelist initializing for memory hotadd: wait_table initialization\n\nWait_table is initialized according to zone size at boot time. But, we cannot\nknow the maixmum zone size when memory hotplug is enabled. It can be\nchanged.... And resizing of wait_table is hard.\n\nSo kernel allocate and initialzie wait_table as its maximum size.\n\nSigned-off-by: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nSigned-off-by: Yasunori Goto \u003cy-goto@jp.fujitsu.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "718127cc3170454f4aa274fdd2f1e01574fecd66", "tree": "8b42a48248d6508b8369718deef6b1af3ea82dbf", "parents": [ "86356ab147669bd3bcb2149fd9561d1280835c24" ], "author": { "name": "Yasunori Goto", "email": "y-goto@jp.fujitsu.com", "time": "Fri Jun 23 02:03:10 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Fri Jun 23 07:42:46 2006 -0700" }, "message": "[PATCH] wait_table and zonelist initializing for memory hotadd: add return code for init_current_empty_zone\n\nWhen add_zone() is called against empty zone (not populated zone), we have to\ninitialize the zone which didn\u0027t initialize at boot time. But,\ninit_currently_empty_zone() may fail due to allocation of wait table. So,\nthis patch is to catch its error code.\n\nChanges against wait_table is in the next patch.\n\nSigned-off-by: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nSigned-off-by: Yasunori Goto \u003cy-goto@jp.fujitsu.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "86356ab147669bd3bcb2149fd9561d1280835c24", "tree": "bedc7113593e0f6a91aff18bb506fc3327516d81", "parents": [ "02b694dea473ad3db1e2d1b14c1fef8fbd92e5e6" ], "author": { "name": "Yasunori Goto", "email": "y-goto@jp.fujitsu.com", "time": "Fri Jun 23 02:03:09 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Fri Jun 23 07:42:46 2006 -0700" }, "message": "[PATCH] wait_table and zonelist initializing for memory hotadd: change to meminit for build_zonelist\n\nChange definitions of some functions and data from __init to __meminit.\n\nThese functions and data can be used after bootup by this patch to be used for\nhot-add codes.\n\nSigned-off-by: Yasunori Goto \u003cy-goto@jp.fujitsu.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "02b694dea473ad3db1e2d1b14c1fef8fbd92e5e6", "tree": "a39451192b589486d70f4d989f9b7f19ef889db0", "parents": [ "3c5a87f476bed45616e7e543dcaea4440c77bf93" ], "author": { "name": "Yasunori Goto", "email": "y-goto@jp.fujitsu.com", "time": "Fri Jun 23 02:03:08 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Fri Jun 23 07:42:46 2006 -0700" }, "message": "[PATCH] wait_table and zonelist initializing for memory hotadd: change name of wait_table_size()\n\nThis is just to rename from wait_table_size() to wait_table_hash_nr_entries().\n\nSigned-off-by: Yasunori Goto \u003cy-goto@jp.fujitsu.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "cb2b95e1c6b56e3d2369d3a5f4bc97f4fa180683", "tree": "121d3fcd539f7d62887949840307ac26aadaa9e4", "parents": [ "6f0419e06a3b151ab616a31accdabef41dc2d1b0" ], "author": { "name": "Andy Whitcroft", "email": "apw@shadowen.org", "time": "Fri Jun 23 02:03:01 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Fri Jun 23 07:42:45 2006 -0700" }, "message": "[PATCH] zone handle unaligned zone boundaries\n\nThe buddy allocator has a requirement that boundaries between contigious\nzones occur aligned with the the MAX_ORDER ranges. Where they do not we\nwill incorrectly merge pages cross zone boundaries. This can lead to pages\nfrom the wrong zone being handed out.\n\nOriginally the buddy allocator would check that buddies were in the same\nzone by referencing the zone start and end page frame numbers. This was\nremoved as it became very expensive and the buddy allocator already made\nthe assumption that zones boundaries were aligned.\n\nIt is clear that not all configurations and architectures are honouring\nthis alignment requirement. Therefore it seems safest to reintroduce\nsupport for non-aligned zone boundaries. This patch introduces a new check\nwhen considering a page a buddy it compares the zone_table index for the\ntwo pages and refuses to merge the pages where they do not match. The\nzone_table index is unique for each node/zone combination when\nFLATMEM/DISCONTIGMEM is enabled and for each section/zone combination when\nSPARSEMEM is enabled (a SPARSEMEM section is at least a MAX_ORDER size).\n\nSigned-off-by: Andy Whitcroft \u003capw@shadowen.org\u003e\nCc: Dave Hansen \u003chaveblue@us.ibm.com\u003e\nCc: Mel Gorman \u003cmel@csn.ul.ie\u003e\nCc: Yasunori Goto \u003cy-goto@jp.fujitsu.com\u003e\nCc: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "e984bb43f7450312ba66fe0e67a99efa6be3b246", "tree": "54c86240172136fc81c773f71cd70eda54fed6f2", "parents": [ "ae57a856429dd932c547530df1b234eb7e642297" ], "author": { "name": "Bob Picco", "email": "bob.picco@hp.com", "time": "Sat May 20 15:00:31 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Sun May 21 12:59:22 2006 -0700" }, "message": "[PATCH] Align the node_mem_map endpoints to a MAX_ORDER boundary\n\nAndy added code to buddy allocator which does not require the zone\u0027s\nendpoints to be aligned to MAX_ORDER. An issue is that the buddy allocator\nrequires the node_mem_map\u0027s endpoints to be MAX_ORDER aligned. Otherwise\n__page_find_buddy could compute a buddy not in node_mem_map for partial\nMAX_ORDER regions at zone\u0027s endpoints. page_is_buddy will detect that\nthese pages at endpoints are not PG_buddy (they were zeroed out by bootmem\nallocator and not part of zone). Of course the negative here is we could\nwaste a little memory but the positive is eliminating all the old checks\nfor zone boundary conditions.\n\nSPARSEMEM won\u0027t encounter this issue because of MAX_ORDER size constraint\nwhen SPARSEMEM is configured. ia64 VIRTUAL_MEM_MAP doesn\u0027t need the logic\neither because the holes and endpoints are handled differently. This\nleaves checking alloc_remap and other arches which privately allocate for\nnode_mem_map.\n\nSigned-off-by: Bob Picco \u003cbob.picco@hp.com\u003e\nAcked-by: Mel Gorman \u003cmel@csn.ul.ie\u003e\nCc: Dave Hansen \u003chaveblue@us.ibm.com\u003e\nCc: Andy Whitcroft \u003capw@shadowen.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "bdd804f478a0cc74bf7db8e9f9d5fd379d1b31ca", "tree": "2b8f083b1ca698c0f9321b3714dab036d2531f29", "parents": [ "593ee20766921fec643194dff829e17f30552220" ], "author": { "name": "Paul Jackson", "email": "pj@sgi.com", "time": "Sat May 20 15:00:09 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Sun May 21 12:59:18 2006 -0700" }, "message": "[PATCH] Cpuset: might sleep checking zones allowed fix\n\nFix a couple of infrequently encountered \u0027sleeping function called from\ninvalid context\u0027 in the cpuset hooks in __alloc_pages. Could sleep while\ninterrupts disabled.\n\nThe routine cpuset_zone_allowed() is called by code in mm/page_alloc.c\n__alloc_pages() to determine if a zone is allowed in the current tasks\ncpuset. This routine can sleep, for certain GFP_KERNEL allocations, if the\nzone is on a memory node not allowed in the current cpuset, but might be\nallowed in a parent cpuset.\n\nBut we can\u0027t sleep in __alloc_pages() if in interrupt, nor if called for a\nGFP_ATOMIC request (__GFP_WAIT not set in gfp_flags).\n\nThe rule was intended to be:\n Don\u0027t call cpuset_zone_allowed() if you can\u0027t sleep, unless you\n pass in the __GFP_HARDWALL flag set in gfp_flag, which disables\n the code that might scan up ancestor cpusets and sleep.\n\nThis rule was being violated in a couple of places, due to a bogus change\nmade (by myself, pj) to __alloc_pages() as part of the November 2005 effort\nto cleanup its logic, and also due to a later fix to constrain which swap\ndaemons were awoken.\n\nThe bogus change can be seen at:\n http://linux.derkeiler.com/Mailing-Lists/Kernel/2005-11/4691.html\n [PATCH 01/05] mm fix __alloc_pages cpuset ALLOC_* flags\n\nThis was first noticed on a tight memory system, in code that was disabling\ninterrupts and doing allocation requests with __GFP_WAIT not set, which\nresulted in __might_sleep() writing complaints to the log \"Debug: sleeping\nfunction called ...\", when the code in cpuset_zone_allowed() tried to take\nthe callback_sem cpuset semaphore.\n\nWe haven\u0027t seen a system hang on this \u0027might_sleep\u0027 yet, but we are at\ndecent risk of seeing it fairly soon, especially since the additional\ncpuset_zone_allowed() check was added, conditioning wakeup_kswapd(), in\nMarch 2006.\n\nSpecial thanks to Dave Chinner, for figuring this out, and a tip of the hat\nto Nick Piggin who warned me of this back in Nov 2005, before I was ready\nto listen.\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": "ac924c6034d9095f95ee889f7e31bbb9145da0c2", "tree": "2db4fc64a008ff2b81a0faf381d8c21ccc5006b2", "parents": [ "5afdbd6e84c7fbdaa7cfde4cbee0d3a5f4f56da2" ], "author": { "name": "Andrew Morton", "email": "akpm@osdl.org", "time": "Mon May 15 09:43:59 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Mon May 15 11:20:55 2006 -0700" }, "message": "[PATCH] setup_per_zone_pages_min() overflow fix\n\nAs pointed out in http://bugzilla.kernel.org/show_bug.cgi?id\u003d6490, this\nfunction can experience overflows on 32-bit machines, causing our response to\nchanged values of min_free_kbytes to go whacky.\n\nFixing it efficiently is all too hard, so fix it with 64-bit math instead.\n\nCc: Ake Sandgren \u003cake.sandgren@hpc2n.umu.se\u003e\nCc: Martin Bligh \u003cmbligh@google.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "83d722f7e198b034699b1500d98729beff930efd", "tree": "7d790a2fd62165373ec7bacde704837288e0bec3", "parents": [ "649bbaa484bcdce94f40a1b97a6a2ded0549e8a2" ], "author": { "name": "Chandra Seetharaman", "email": "sekharan@us.ibm.com", "time": "Mon Apr 24 19:35:21 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Wed Apr 26 08:30:03 2006 -0700" }, "message": "[PATCH] Remove __devinit and __cpuinit from notifier_call definitions\n\nFew of the notifier_chain_register() callers use __init in the definition\nof notifier_call. It is incorrect as the function definition should be\navailable after the initializations (they do not unregister them during\ninitializations).\n\nThis patch fixes all such usages to _not_ have the notifier_call __init\nsection.\n\nSigned-off-by: Chandra Seetharaman \u003csekharan@us.ibm.com\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "6aa3001b239b387d98a7f945e4a51edeb59e4f2d", "tree": "df3901329baddd8c37a661ad595fa52821dee8ef", "parents": [ "013159227b840dfd441bd2e4c8b4d77ffb3cc42e" ], "author": { "name": "Andrew Morton", "email": "akpm@osdl.org", "time": "Tue Apr 18 22:20:52 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Wed Apr 19 09:13:50 2006 -0700" }, "message": "[PATCH] page_alloc.c: buddy handling cleanup\n\nFix up some whitespace damage.\n\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "cb45b0e966cbe747b6189c15b108901cc7d6c97c", "tree": "0402d4809ec175e80b083f7a713ec32c0109baad", "parents": [ "e23ca00bf1b1c6c0f04702cb4d29e275ab8dc330" ], "author": { "name": "Hideo AOKI", "email": "haoki@redhat.com", "time": "Mon Apr 10 22:52:59 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Tue Apr 11 06:18:32 2006 -0700" }, "message": "[PATCH] overcommit: add calculate_totalreserve_pages()\n\nThese patches are an enhancement of OVERCOMMIT_GUESS algorithm in\n__vm_enough_memory().\n\n- why the kernel needed patching\n\n When the kernel can\u0027t allocate anonymous pages in practice, currnet\n OVERCOMMIT_GUESS could return success. This implementation might be\n the cause of oom kill in memory pressure situation.\n\n If the Linux runs with page reservation features like\n /proc/sys/vm/lowmem_reserve_ratio and without swap region, I think\n the oom kill occurs easily.\n\n- the overall design approach in the patch\n\n When the OVERCOMMET_GUESS algorithm calculates number of free pages,\n the reserved free pages are regarded as non-free pages.\n\n This change helps to avoid the pitfall that the number of free pages\n become less than the number which the kernel tries to keep free.\n\n- testing results\n\n I tested the patches using my test kernel module.\n\n If the patches aren\u0027t applied to the kernel, __vm_enough_memory()\n returns success in the situation but autual page allocation is\n failed.\n\n On the other hand, if the patches are applied to the kernel, memory\n allocation failure is avoided since __vm_enough_memory() returns\n failure in the situation.\n\n I checked that on i386 SMP 16GB memory machine. I haven\u0027t tested on\n nommu environment currently.\n\nThis patch adds totalreserve_pages for __vm_enough_memory().\n\nCalculate_totalreserve_pages() checks maximum lowmem_reserve pages and\npages_high in each zone. Finally, the function stores the sum of each\nzone to totalreserve_pages.\n\nThe totalreserve_pages is calculated when the VM is initilized.\nAnd the variable is updated when /proc/sys/vm/lowmem_reserve_raito\nor /proc/sys/vm/min_free_kbytes are changed.\n\nSigned-off-by: Hideo Aoki \u003chaoki@redhat.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "676165a8af7167f488abdcce6851a9bc36e83254", "tree": "a9b2b8dc155b48ce073b5ada31f2ac0694118e69", "parents": [ "c3a9d6541f84ac3ff566982d08389b87c1c36b4e" ], "author": { "name": "Nick Piggin", "email": "piggin@cyberone.com.au", "time": "Mon Apr 10 11:21:48 2006 +1000" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Mon Apr 10 10:16:37 2006 -0700" }, "message": "[PATCH] Fix buddy list race that could lead to page lru list corruptions\n\nRohit found an obscure bug causing buddy list corruption.\n\npage_is_buddy is using a non-atomic test (PagePrivate \u0026\u0026 page_count \u003d\u003d 0)\nto determine whether or not a free page\u0027s buddy is itself free and in the\nbuddy lists.\n\nEach of the conjuncts may be true at different times due to unrelated\nconditions, so the non-atomic page_is_buddy test may find each conjunct to\nbe true even if they were not both true at the same time (ie. the page was\nnot on the buddy lists).\n\nSigned-off-by: Martin Bligh \u003cmbligh@google.com\u003e\nSigned-off-by: Rohit Seth \u003crohitseth@google.com\u003e\nSigned-off-by: Nick Piggin \u003cnpiggin@suse.de\u003e\nSigned-off-by: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "ae0f15fb91274e67d78836d38c99ec363df33073", "tree": "bfaa065faf772c42e1875c9e5f4b000cf4b1d241", "parents": [ "3571761fe49d960bb720c2308ffb9401f0a5e161" ], "author": { "name": "KAMEZAWA Hiroyuki", "email": "kamezawa.hiroyu@jp.fujitsu.com", "time": "Mon Mar 27 01:16:01 2006 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Mon Mar 27 08:44:48 2006 -0800" }, "message": "[PATCH] for_each_online_pgdat: remove pgdat_list\n\nBy using for_each_online_pgdat(), pgdat_list is not necessary now. This patch\nremoves it.\n\nSigned-off-by: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "ec936fc563715a9e2b2e363eb060655b49529325", "tree": "72e77aefeeda3c6ff396f080a5c6a82f25d52bf0", "parents": [ "679bc9fbb508a0aac9539b2de747eb5849feb428" ], "author": { "name": "KAMEZAWA Hiroyuki", "email": "kamezawa.hiroyu@jp.fujitsu.com", "time": "Mon Mar 27 01:15:59 2006 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Mon Mar 27 08:44:48 2006 -0800" }, "message": "[PATCH] for_each_online_pgdat: renaming for_each_pgdat\n\nReplace for_each_pgdat() with for_each_online_pgdat().\n\nSigned-off-by: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" } ], "next": "a0140c1d85637ee5f4ea7c78f066e3611a6a79dc" }