)]}' { "log": [ { "commit": "4060994c3e337b40e0f6fa8ce2cc178e021baf3d", "tree": "980297c1747ca89354bc879cc5d17903eacb19e2", "parents": [ "0174f72f848dfe7dc7488799776303c81b181b16", "d3ee871e63d0a0c70413dc0aa5534b8d6cd6ec37" ], "author": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Mon Nov 14 19:56:02 2005 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Mon Nov 14 19:56:02 2005 -0800" }, "message": "Merge x86-64 update from Andi\n" }, { "commit": "07808b74e7dab1aa385e698795875337d72daf7d", "tree": "3b593c31e6e58364f4001105bfeebefa94708209", "parents": [ "1dff7f3db5f045ccbfeca5bb00b0958a78501557" ], "author": { "name": "Andi Kleen", "email": "ak@suse.de", "time": "Sat Nov 05 17:25:53 2005 +0100" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Mon Nov 14 19:55:14 2005 -0800" }, "message": "[PATCH] x86_64: Remove obsolete ARCH_HAS_ATOMIC_UNSIGNED and page_flags_t\n\nHas been introduced for x86-64 at some point to save memory\nin struct page, but has been obsolete for some time. Just\nremove it.\n\nSigned-off-by: Andi Kleen \u003cak@suse.de\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "b0d41693217b3bb5b837940dc7465e82a9d49476", "tree": "965dbdfea6644d57fd107619b2ea9e0c9ec6bdc1", "parents": [ "fed644132f8ec4bf05b63f79c507c0acaa692c37" ], "author": { "name": "Andi Kleen", "email": "ak@suse.de", "time": "Sat Nov 05 17:25:53 2005 +0100" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Mon Nov 14 19:55:13 2005 -0800" }, "message": "[PATCH] x86_64: When cpu_up fails clean up page allocator properly\n\nSigned-off-by: Andi Kleen \u003cak@suse.de\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "a2f1b424900715ed9d1699c3bb88a434a2b42bc0", "tree": "8ef440f840656365166ff2d71aa445c224c53546", "parents": [ "56720367cd89ef5265f39da2d674c5b92cd4cd87" ], "author": { "name": "Andi Kleen", "email": "ak@suse.de", "time": "Sat Nov 05 17:25:53 2005 +0100" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Mon Nov 14 19:55:13 2005 -0800" }, "message": "[PATCH] x86_64: Add 4GB DMA32 zone\n\nAdd a new 4GB GFP_DMA32 zone between the GFP_DMA and GFP_NORMAL zones.\n\nAs a bit of historical background: when the x86-64 port\nwas originally designed we had some discussion if we should\nuse a 16MB DMA zone like i386 or a 4GB DMA zone like IA64 or\nboth. Both was ruled out at this point because it was in early\n2.4 when VM is still quite shakey and had bad troubles even\ndealing with one DMA zone. We settled on the 16MB DMA zone mainly\nbecause we worried about older soundcards and the floppy.\n\nBut this has always caused problems since then because\ndevice drivers had trouble getting enough DMA able memory. These days\nthe VM works much better and the wide use of NUMA has proven\nit can deal with many zones successfully.\n\nSo this patch adds both zones.\n\nThis helps drivers who need a lot of memory below 4GB because\ntheir hardware is not accessing more (graphic drivers - proprietary\nand free ones, video frame buffer drivers, sound drivers etc.).\nPreviously they could only use IOMMU+16MB GFP_DMA, which\nwas not enough memory.\n\nAnother common problem is that hardware who has full memory\naddressing for \u003e4GB misses it for some control structures in memory\n(like transmit rings or other metadata). They tended to allocate memory\nin the 16MB GFP_DMA or the IOMMU/swiotlb then using pci_alloc_consistent,\nbut that can tie up a lot of precious 16MB GFPDMA/IOMMU/swiotlb memory\n(even on AMD systems the IOMMU tends to be quite small) especially if you have\nmany devices. With the new zone pci_alloc_consistent can just put\nthis stuff into memory below 4GB which works better.\n\nOne argument was still if the zone should be 4GB or 2GB. The main\nmotivation for 2GB would be an unnamed not so unpopular hardware\nraid controller (mostly found in older machines from a particular four letter\ncompany) who has a strange 2GB restriction in firmware. But\nthat one works ok with swiotlb/IOMMU anyways, so it doesn\u0027t really\nneed GFP_DMA32. I chose 4GB to be compatible with IA64 and because\nit seems to be the most common restriction.\n\nThe new zone is so far added only for x86-64.\n\nFor other architectures who don\u0027t set up this\nnew zone nothing changes. Architectures can set a compatibility\ndefine in Kconfig CONFIG_DMA_IS_DMA32 that will define GFP_DMA32\nas GFP_DMA. Otherwise it\u0027s a nop because on 32bit architectures\nit\u0027s normally not needed because GFP_NORMAL (\u003d0) is DMA able\nenough.\n\nOne problem is still that GFP_DMA means different things on different\narchitectures. e.g. some drivers used to have #ifdef ia64 use GFP_DMA\n(trusting it to be 4GB) #elif __x86_64__ (use other hacks like\nthe swiotlb because 16MB is not enough) ... . This was quite\nugly and is now obsolete.\n\nThese should be now converted to use GFP_DMA32 unconditionally. I haven\u0027t done\nthis yet. Or best only use pci_alloc_consistent/dma_alloc_coherent\nwhich will use GFP_DMA32 transparently.\n\nSigned-off-by: Andi Kleen \u003cak@suse.de\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "669ed17521b9b78cdbeac8a53c30599aca9527ce", "tree": "9a4c037120b7a85943c37115be9f4a6eacb28874", "parents": [ "2d6c666e8704cf06267f29a4fa3d2cf823469c38" ], "author": { "name": "Nick Piggin", "email": "nickpiggin@yahoo.com.au", "time": "Sun Nov 13 16:06:45 2005 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Sun Nov 13 18:14:12 2005 -0800" }, "message": "[PATCH] mm: highmem watermarks\n\nThe pages_high - pages_low and pages_low - pages_min deltas are the asynch\nreclaim watermarks. As such, the should be in the same ratios as any other\nzone for highmem zones. It is the pages_min - 0 delta which is the\nPF_MEMALLOC reserve, and this is the region that isn\u0027t very useful for\nhighmem.\n\nThis patch ensures highmem systems have similar characteristics as non highmem\nones with the same amount of memory, and also that highmem zones get similar\nreclaim pressures to other zones.\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": "7fb1d9fca5c6e3b06773b69165a73f3fb786b8ee", "tree": "21f8b7deeb8a7e1197edfccc610365a12d60322e", "parents": [ "51c6f666fceb3184eeff045dad4432b602cd648e" ], "author": { "name": "Rohit Seth", "email": "rohit.seth@intel.com", "time": "Sun Nov 13 16:06:43 2005 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Sun Nov 13 18:14:12 2005 -0800" }, "message": "[PATCH] mm: __alloc_pages cleanup\n\nClean up of __alloc_pages.\n\nRestoration of previous behaviour, plus further cleanups by introducing an\n\u0027alloc_flags\u0027, removing the last of should_reclaim_zone.\n\nSigned-off-by: Rohit Seth \u003crohit.seth@intel.com\u003e\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": "885036d32f5d3c427c3e2b385b5a5503805e3e52", "tree": "7f442b309a749d8cbe0f2ac5c38531eeff8bfcd8", "parents": [ "d4d28dd4b12649d02a89d19e6bd12ab92a6fcd4e" ], "author": { "name": "Kirill Korotaev", "email": "dev@sw.ru", "time": "Sun Nov 13 16:06:41 2005 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Sun Nov 13 18:14:12 2005 -0800" }, "message": "[PATCH] mm: __GFP_NOFAIL fix\n\nIn __alloc_pages():\n\nif ((p-\u003eflags \u0026 (PF_MEMALLOC | PF_MEMDIE)) \u0026\u0026 !in_interrupt()) {\n /* go through the zonelist yet again, ignoring mins */\n for (i \u003d 0; zones[i] !\u003d NULL; i++) {\n struct zone *z \u003d zones[i];\n\n page \u003d buffered_rmqueue(z, order, gfp_mask);\n if (page) {\n zone_statistics(zonelist, z);\n goto got_pg;\n }\n }\n goto nopage; \u003c\u003c\u003c\u003c HERE!!! FAIL...\n}\n\nkswapd (which has PF_MEMALLOC flag) can fail to allocate memory even when\nit allocates it with __GFP_NOFAIL flag.\n\nSigned-Off-By: Pavel Emelianov \u003cxemul@sw.ru\u003e\nSigned-Off-By: Denis Lunev \u003cden@sw.ru\u003e\nSigned-Off-By: Kirill Korotaev \u003cdev@sw.ru\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": "6b482c6779daaa893b277fc9b70767a7c2e7c5eb", "tree": "e5e5be3db037e724b276a0324b44810207dc5341", "parents": [ "393b07258766130146b962bc294d66615a47468a" ], "author": { "name": "Dave Jones", "email": "davej@redhat.com", "time": "Thu Nov 10 15:45:56 2005 -0500" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Thu Nov 10 13:25:53 2005 -0800" }, "message": "[PATCH] Don\u0027t print per-cpu vm stats for offline cpus.\n\nI just hit a page allocation error on a kernel configured to support\n64 CPUs. It spewed 60 completely useless unnecessary lines of info.\n\nSigned-off-by: Dave Jones \u003cdavej@redhat.com\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "f8b8db77b0cc36670ef4ed6bc31e64537ffa197e", "tree": "a55807b704a7120722d3903ec92c3d393b33f87d", "parents": [ "e6a7e0e7cee3d4bc9a9d2f82ef2f9de4687a5656" ], "author": { "name": "Adrian Bunk", "email": "bunk@stusta.de", "time": "Mon Nov 07 01:01:39 2005 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Mon Nov 07 07:54:07 2005 -0800" }, "message": "[PATCH] unexport nr_swap_pages\n\nI didn\u0027t find any possible modular usage in the kernel.\n\nSigned-off-by: Adrian Bunk \u003cbunk@stusta.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "2f96996de0eda378df2a5f857ee1ef615ae10a4f", "tree": "ee3075c48a99369c9748ee17d3bb8396e9f38372", "parents": [ "5fcbb23050936d69de8087d4b311eaf55cb42740" ], "author": { "name": "John Hawkes", "email": "hawkes@sgi.com", "time": "Sat Oct 29 18:17:01 2005 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Sat Oct 29 21:40:45 2005 -0700" }, "message": "[PATCH] mm: wider use of for_each_*cpu()\n\nIn \u0027mm\u0027 change the explicit use of a for-loop using NR_CPUS into the\ngeneral for_each_cpu() constructs. This widens the scope of potential\nfuture optimizations of the general constructs, as well as takes advantage\nof the existing optimizations of first_cpu() and next_cpu(), which is\nadvantageous when the true CPU count is much smaller than NR_CPUS.\n\nSigned-off-by: John Hawkes \u003chawkes@sgi.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "3947be1969a9ce455ec30f60ef51efb10e4323d1", "tree": "0b4b3b4c268beb7aa88cb685cce48b6bb5053c47", "parents": [ "bdc8cb984576ab5b550c8b24c6fa111a873503e3" ], "author": { "name": "Dave Hansen", "email": "haveblue@us.ibm.com", "time": "Sat Oct 29 18:16:54 2005 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Sat Oct 29 21:40:44 2005 -0700" }, "message": "[PATCH] memory hotplug: sysfs and add/remove functions\n\nThis adds generic memory add/remove and supporting functions for memory\nhotplug into a new file as well as a memory hotplug kernel config option.\n\nIndividual architecture patches will follow.\n\nFor now, disable memory hotplug when swsusp is enabled. There\u0027s a lot of\nchurn there right now. We\u0027ll fix it up properly once it calms down.\n\nSigned-off-by: Matt Tolentino \u003cmatthew.e.tolentino@intel.com\u003e\nSigned-off-by: Dave Hansen \u003chaveblue@us.ibm.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "bdc8cb984576ab5b550c8b24c6fa111a873503e3", "tree": "f94548988874caa10d770e6e65bc50c925abf825", "parents": [ "208d54e5513c0c02d85af0990901354c74364d5c" ], "author": { "name": "Dave Hansen", "email": "haveblue@us.ibm.com", "time": "Sat Oct 29 18:16:53 2005 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Sat Oct 29 21:40:44 2005 -0700" }, "message": "[PATCH] memory hotplug locking: zone span seqlock\n\nSee the \"fixup bad_range()\" patch for more information, but this actually\ncreates a the lock to protect things making assumptions about a zone\u0027s size\nstaying constant at runtime.\n\nSigned-off-by: Dave Hansen \u003chaveblue@us.ibm.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "208d54e5513c0c02d85af0990901354c74364d5c", "tree": "83922f1d4a83f19bffcbff299044f421bd7e9c73", "parents": [ "c6a57e19e464db118dc4ab9cfe9e9748c6d630a0" ], "author": { "name": "Dave Hansen", "email": "haveblue@us.ibm.com", "time": "Sat Oct 29 18:16:52 2005 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Sat Oct 29 21:40:44 2005 -0700" }, "message": "[PATCH] memory hotplug locking: node_size_lock\n\npgdat-\u003enode_size_lock is basically only neeeded in one place in the normal\ncode: show_mem(), which is the arch-specific sysrq-m printing function.\n\nStrictly speaking, the architectures not doing memory hotplug do no need this\nlocking in show_mem(). However, they are all included for completeness. This\nshould also make any future consolidation of all of the implementations a\nlittle more straightforward.\n\nThis lock is also held in the sparsemem code during a memory removal, as\nsections are invalidated. This is the place there pfn_valid() is made false\nfor a memory area that\u0027s being removed. The lock is only required when doing\npfn_valid() operations on memory which the user does not already have a\nreference on the page, such as in show_mem().\n\nSigned-off-by: Dave Hansen \u003chaveblue@us.ibm.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "c6a57e19e464db118dc4ab9cfe9e9748c6d630a0", "tree": "1be192e4c0635c9aa49c8c76d1606e606ecdc9a0", "parents": [ "4ca644d970bf2542623228a4624af356d20ca267" ], "author": { "name": "Dave Hansen", "email": "haveblue@us.ibm.com", "time": "Sat Oct 29 18:16:52 2005 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Sat Oct 29 21:40:44 2005 -0700" }, "message": "[PATCH] memory hotplug prep: fixup bad_range()\n\nWhen doing memory hotplug operations, the size of existing zones can obviously\nchange. This means that zone-\u003ezone_{start_pfn,spanned_pages} can change.\n\nThere are currently no locks that protect these structure members. However,\nthey are rarely accessed at runtime. Outside of swsusp, the only place that I\ncan find is bad_range().\n\nSo, split bad_range() up into two pieces: one that needs to be locked and\nanther that doesn\u0027t.\n\nSigned-off-by: Dave Hansen \u003chaveblue@us.ibm.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "ed8ece2ec8d3c2031b1a1a0737568bb0d49454e0", "tree": "5fb5b994ad3fcdc4ab2bb2c906d88c02a8395807", "parents": [ "2774812f417db562f0d659d2c1b5755ba35d2770" ], "author": { "name": "Dave Hansen", "email": "haveblue@us.ibm.com", "time": "Sat Oct 29 18:16:50 2005 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Sat Oct 29 21:40:44 2005 -0700" }, "message": "[PATCH] memory hotplug prep: break out zone initialization\n\nIf a zone is empty at boot-time and then hot-added to later, it needs to run\nthe same init code that would have been run on it at boot.\n\nThis patch breaks out zone table and per-cpu-pages functions for use by the\nhotplug code. You can almost see all of the free_area_init_core() function on\none page now. :)\n\nSigned-off-by: Dave Hansen \u003chaveblue@us.ibm.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "4c21e2f2441dc5fbb957b030333f5a3f2d02dea7", "tree": "1f76d33bb1d76221c6424bc5fed080a4f91349a6", "parents": [ "b38c6845b695141259019e2b7c0fe6c32a6e720d" ], "author": { "name": "Hugh Dickins", "email": "hugh@veritas.com", "time": "Sat Oct 29 18:16:40 2005 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Sat Oct 29 21:40:42 2005 -0700" }, "message": "[PATCH] mm: split page table lock\n\nChristoph Lameter demonstrated very poor scalability on the SGI 512-way, with\na many-threaded application which concurrently initializes different parts of\na large anonymous area.\n\nThis patch corrects that, by using a separate spinlock per page table page, to\nguard the page table entries in that page, instead of using the mm\u0027s single\npage_table_lock. (But even then, page_table_lock is still used to guard page\ntable allocation, and anon_vma allocation.)\n\nIn this implementation, the spinlock is tucked inside the struct page of the\npage table page: with a BUILD_BUG_ON in case it overflows - which it would in\nthe case of 32-bit PA-RISC with spinlock debugging enabled.\n\nSplitting the lock is not quite for free: another cacheline access. Ideally,\nI suppose we would use split ptlock only for multi-threaded processes on\nmulti-cpu machines; but deciding that dynamically would have its own costs.\nSo for now enable it by config, at some number of cpus - since the Kconfig\nlanguage doesn\u0027t support inequalities, let preprocessor compare that with\nNR_CPUS. But I don\u0027t think it\u0027s worth being user-configurable: for good\ntesting of both split and unsplit configs, split now at 4 cpus, and perhaps\nchange that to 8 later.\n\nThere is a benefit even for singly threaded processes: kswapd can be attacking\none part of the mm while another part is busy faulting.\n\nSigned-off-by: Hugh Dickins \u003chugh@veritas.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "b5810039a54e5babf428e9a1e89fc1940fabff11", "tree": "835836cb527ec9bd525f93eb7e016f3dfb8c8ae2", "parents": [ "f9c98d0287de42221c624482fd4f8d485c98ab22" ], "author": { "name": "Nick Piggin", "email": "nickpiggin@yahoo.com.au", "time": "Sat Oct 29 18:16:12 2005 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Sat Oct 29 21:40:39 2005 -0700" }, "message": "[PATCH] core remove PageReserved\n\nRemove PageReserved() calls from core code by tightening VM_RESERVED\nhandling in mm/ to cover PageReserved functionality.\n\nPageReserved special casing is removed from get_page and put_page.\n\nAll setting and clearing of PageReserved is retained, and it is now flagged\nin the page_alloc checks to help ensure we don\u0027t introduce any refcount\nbased freeing of Reserved pages.\n\nMAP_PRIVATE, PROT_WRITE of VM_RESERVED regions is tentatively being\ndeprecated. We never completely handled it correctly anyway, and is be\nreintroduced in future if required (Hugh has a proof of concept).\n\nOnce PageReserved() calls are removed from kernel/power/swsusp.c, and all\narch/ and driver code, the Set and Clear calls, and the PG_reserved bit can\nbe trivially removed.\n\nLast real user of PageReserved is swsusp, which uses PageReserved to\ndetermine whether a struct page points to valid memory or not. This still\nneeds to be addressed (a generic page_is_ram() should work).\n\nA last caveat: the ZERO_PAGE is now refcounted and managed with rmap (and\nthus mapcounted and count towards shared rss). These writes to the struct\npage could cause excessive cacheline bouncing on big systems. There are a\nnumber of ways this could be addressed if it is an issue.\n\nSigned-off-by: Nick Piggin \u003cnpiggin@suse.de\u003e\n\nRefcount bug fix for filemap_xip.c\n\nSigned-off-by: Carsten Otte \u003ccotte@de.ibm.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "e46a5e28c201f703c18b47b108bfddec44f897c4", "tree": "b55f5c376533f2ecfedc8fed0d12a590bfb1387e", "parents": [ "ba56e91c940146e99ac694c4c7cd7f2b4aaa565d" ], "author": { "name": "Seth, Rohit", "email": "rohit.seth@intel.com", "time": "Sat Oct 29 18:15:48 2005 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Sat Oct 29 21:40:35 2005 -0700" }, "message": "[PATCH] mm: set per-cpu-pages lower threshold to zero\n\nSet the low water mark for hot pages in pcp to zero.\n\n(akpm: for the life of me I cannot remember why we created pcp-\u003elow. Neither\ncan Martin and the changelog is silent. Maybe it was just a brainfart, but I\nhave this feeling that there was a reason. If not, we should remove the\nfields completely. We\u0027ll see.)\n\nSigned-off-by: Rohit Seth \u003crohit.seth@intel.com\u003e\nCc: \u003clinux-mm@kvack.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "ba56e91c940146e99ac694c4c7cd7f2b4aaa565d", "tree": "5254f1ce8e2f39ccb58a74d0ff0120817b3b5c05", "parents": [ "fcdae29aa7a5c79f245110f6680afdc1858d3626" ], "author": { "name": "Seth, Rohit", "email": "rohit.seth@intel.com", "time": "Sat Oct 29 18:15:47 2005 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Sat Oct 29 21:40:35 2005 -0700" }, "message": "[PATCH] mm: page_alloc: increase size of per-cpu-pages\n\nIncrease the page allocator\u0027s per-cpu magazines from 1/4MB to 1/2MB.\n\nOver 100+ runs for a workload, the difference in mean is about 2%. The best\nresults for both are almost same. Though the max variation in results with\n1/2MB is only 2.2%, whereas with 1/4MB it is 12%.\n\nSigned-off-by: Rohit Seth \u003crohit.seth@intel.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "260b23674fdb570f3235ce55892246bef1c24c2a", "tree": "471e7b546cbf1f7ee4a165e5bd9a2de0770e53be", "parents": [ "c4cdd038318863e912e9b992489f61497f98b442" ], "author": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Fri Oct 21 03:22:44 2005 -0400" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Fri Oct 28 08:16:51 2005 -0700" }, "message": "[PATCH] gfp_t: the rest\n\nzone handling, mapping-\u003eflags handling\n\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "af4ca457eaf2d6682059c18463eb106e2ce58198", "tree": "399ca5ab3b15d723a6aefd04c764a2a06089ed06", "parents": [ "434f1d10c1adb6c2e333d501ce1e42be610e0723" ], "author": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Fri Oct 21 02:55:38 2005 -0400" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Fri Oct 28 08:16:46 2005 -0700" }, "message": "[PATCH] gfp_t: infrastructure\n\nBeginning of gfp_t annotations:\n\n - -Wbitwise added to CHECKFLAGS\n - old __bitwise renamed to __bitwise__\n - __bitwise defined to either __bitwise__ or nothing, depending on\n __CHECK_ENDIAN__ being defined\n - gfp_t switched from __nocast to __bitwise__\n - force cast to gfp_t added to __GFP_... constants\n - new helper - gfp_zone(); extracts zone bits out of gfp_t value and casts\n the result to int\n\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "1c6fe9465941df04a1ad8f009bd6d95b20072a58", "tree": "8a603129e3f5df909476d41c09c9d87939c2839f", "parents": [ "8712e553562bbbed9b3a99370f08e9bc25908a76" ], "author": { "name": "Magnus Damm", "email": "magnus@valinux.co.jp", "time": "Wed Oct 26 01:58:59 2005 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Wed Oct 26 10:39:43 2005 -0700" }, "message": "[PATCH] NUMA: broken per cpu pageset counters\n\nThe NUMA counters in struct per_cpu_pageset (linux/mmzone.h) are never\ncleared today. This works ok for CPU 0 on NUMA machines because\nboot_pageset[] is already zero, but for other CPU:s this results in\nuninitialized counters.\n\nSigned-off-by: Magnus Damm \u003cmagnus@valinux.co.jp\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "dd0fc66fb33cd610bc1a5db8a5e232d34879b4d7", "tree": "51f96a9db96293b352e358f66032e1f4ff79fafb", "parents": [ "3b0e77bd144203a507eb191f7117d2c5004ea1de" ], "author": { "name": "Al Viro", "email": "viro@ftp.linux.org.uk", "time": "Fri Oct 07 07:46:04 2005 +0100" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Sat Oct 08 15:00:57 2005 -0700" }, "message": "[PATCH] gfp flags annotations - part 1\n\n - added typedef unsigned int __nocast gfp_t;\n\n - replaced __nocast uses for gfp flags with gfp_t - it gives exactly\n the same warnings as far as sparse is concerned, doesn\u0027t change\n generated code (from gcc point of view we replaced unsigned int with\n typedef) and documents what\u0027s going on far better.\n\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "9f1583339a6f52c0c26441d39a0deff8246800f7", "tree": "99efa7690d22a45bf87ec80beb5e2a2d43f6b26d", "parents": [ "fb911ee849756fc6c609dddded92d9207ff3fb29" ], "author": { "name": "Randy Dunlap", "email": "rdunlap@xenotime.net", "time": "Tue Sep 13 01:25:16 2005 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Tue Sep 13 08:22:29 2005 -0700" }, "message": "[PATCH] use add_taint() for setting tainted bit flags\n\nUse the add_taint() interface for setting tainted bit flags instead of\ndoing it manually.\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": "207f36eec9e7b1077d7a0aaadb4800e2c9b4cfa4", "tree": "09fa4a6885ee6a1032a46b2409a13669a8d01459", "parents": [ "9dcbb32f1654e79c212c20d9cd9d48509ee1eaf7" ], "author": { "name": "Renaud Lienhart", "email": "renaud.lienhart@free.fr", "time": "Sat Sep 10 00:26:59 2005 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Sat Sep 10 10:06:31 2005 -0700" }, "message": "[PATCH] remove invalid comment in mm/page_alloc.c\n\nfree_pages_bulk() doesn\u0027t free the entire list if count \u003d\u003d 0.\n\nSigned-off-by: Renaud Lienhart \u003crenaud.lienhart@free.fr\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "9bf2229f8817677127a60c177aefce1badd22d7b", "tree": "06e95863a26b197233081db1dafd869dfd231950", "parents": [ "f90b1d2f1aaaa40c6519a32e69615edc25bb97d5" ], "author": { "name": "Paul Jackson", "email": "pj@sgi.com", "time": "Tue Sep 06 15:18:12 2005 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Wed Sep 07 16:57:40 2005 -0700" }, "message": "[PATCH] cpusets: formalize intermediate GFP_KERNEL containment\n\nThis patch makes use of the previously underutilized cpuset flag\n\u0027mem_exclusive\u0027 to provide what amounts to another layer of memory placement\nresolution. With this patch, there are now the following four layers of\nmemory placement available:\n\n 1) The whole system (interrupt and GFP_ATOMIC allocations can use this),\n 2) The nearest enclosing mem_exclusive cpuset (GFP_KERNEL allocations can use),\n 3) The current tasks cpuset (GFP_USER allocations constrained to here), and\n 4) Specific node placement, using mbind and set_mempolicy.\n\nThese nest - each layer is a subset (same or within) of the previous.\n\nLayer (2) above is new, with this patch. The call used to check whether a\nzone (its node, actually) is in a cpuset (in its mems_allowed, actually) is\nextended to take a gfp_mask argument, and its logic is extended, in the case\nthat __GFP_HARDWALL is not set in the flag bits, to look up the cpuset\nhierarchy for the nearest enclosing mem_exclusive cpuset, to determine if\nplacement is allowed. The definition of GFP_USER, which used to be identical\nto GFP_KERNEL, is changed to also set the __GFP_HARDWALL bit, in the previous\ncpuset_gfp_hardwall_flag patch.\n\nGFP_ATOMIC and GFP_KERNEL allocations will stay within the current tasks\ncpuset, so long as any node therein is not too tight on memory, but will\nescape to the larger layer, if need be.\n\nThe intended use is to allow something like a batch manager to handle several\njobs, each job in its own cpuset, but using common kernel memory for caches\nand such. Swapper and oom_kill activity is also constrained to Layer (2). A\ntask in or below one mem_exclusive cpuset should not cause swapping on nodes\nin another non-overlapping mem_exclusive cpuset, nor provoke oom_killing of a\ntask in another such cpuset. Heavy use of kernel memory for i/o caching and\nsuch by one job should not impact the memory available to jobs in other\nnon-overlapping mem_exclusive cpusets.\n\nThis patch enables providing hardwall, inescapable cpusets for memory\nallocations of each job, while sharing kernel memory allocations between\nseveral jobs, in an enclosing mem_exclusive cpuset.\n\nLike Dinakar\u0027s patch earlier to enable administering sched domains using the\ncpu_exclusive flag, this patch also provides a useful meaning to a cpuset flag\nthat had previously done nothing much useful other than restrict what cpuset\nconfigurations were allowed.\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": "6c231b7bab0aa6860cd9da2de8a064eddc34c146", "tree": "2a6d9dea348651ec6000b96b99fbf5bd9ccdb228", "parents": [ "39ed3fdeec1290dd246dcf1da6b278566987a084" ], "author": { "name": "Ravikiran G Thirumalai", "email": "kiran@scalex86.org", "time": "Tue Sep 06 15:17:45 2005 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Wed Sep 07 16:57:33 2005 -0700" }, "message": "[PATCH] Additions to .data.read_mostly section\n\nMark variables which are usually accessed for reads with __readmostly.\n\nSigned-off-by: Alok N Kataria \u003calokk@calsoftinc.com\u003e\nSigned-off-by: Shai Fultheim \u003cshai@scalex86.org\u003e\nSigned-off-by: Ravikiran Thirumalai \u003ckiran@scalex86.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "c3d8c1414573be8cf7c8fdc1e076935697c7f6af", "tree": "bd2fc21473e03fbbf5c1182ee584b68ebfd8b1cf", "parents": [ "b3dbb4ecd46767b621df3dedd28788da93ee0cac" ], "author": { "name": "Christoph Lameter", "email": "christoph@scalex86.org", "time": "Tue Sep 06 15:16:33 2005 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Wed Sep 07 16:57:18 2005 -0700" }, "message": "[PATCH] More __read_mostly variables\n\nMove some more frequently read variables that showed up during some of our\nperformance tests as sometimes ending up in hot cachelines to the\nread_mostly section.\n\nFix: Move the __read_mostly from before hpet_usec_quotient to follow the\nvariable like the other uses of __read_mostly.\n\nSigned-off-by: Alok N Kataria \u003calokk@calsoftinc.com\u003e\nSigned-off-by: Christoph Lameter \u003cchristoph@scalex86.org\u003e\nSigned-off-by: Shai Fultheim \u003cshai@scalex86.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "c07e02db76940c75fc92f2f2c9adcdbb09ed70d0", "tree": "9d777784fd5e3658d8db5b01a965d4fc568ceb93", "parents": [ "e070ad49f31155d872d8e96cab2142840993e3c0" ], "author": { "name": "Martin Hicks", "email": "mort@sgi.com", "time": "Sat Sep 03 15:55:11 2005 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@evo.osdl.org", "time": "Mon Sep 05 00:05:49 2005 -0700" }, "message": "[PATCH] VM: add page_state info to per-node meminfo\n\nAdd page_state info to the per-node meminfo file in sysfs. This is mostly\njust for informational purposes.\n\nThe lack of this information was brought up recently during a discussion\nregarding pagecache clearing, and I put this patch together to test out one\nof the suggestions.\n\nIt seems like interesting info to have, so I\u0027m submitting the patch.\n\nSigned-off-by: Martin Hicks \u003cmort@sgi.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "53e9a6159fdc6419874ce4d86d3577dbedc77b62", "tree": "7c7f15325569cf5e02dafc1974fb080154616058", "parents": [ "bce5f6ba340b09d8b29902add204bb95a6d3d88b" ], "author": { "name": "Martin Hicks", "email": "mort@bork.org", "time": "Sat Sep 03 15:54:51 2005 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@evo.osdl.org", "time": "Mon Sep 05 00:05:44 2005 -0700" }, "message": "[PATCH] VM: zone reclaim atomic ops cleanup\n\nChristoph Lameter and Marcelo Tosatti asked to get rid of the\natomic_inc_and_test() to cleanup the atomic ops in the zone reclaim code.\n\nSigned-off-by: Martin Hicks \u003cmort@sgi.com\u003e\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": "242e54686257493f0b10ac557e730419d9af7d24", "tree": "d68754b32c531141969a09ca0c5df246893c5b1e", "parents": [ "9a61c349b28ec5aef7e929236571fd770fdef0bb" ], "author": { "name": "Nick Piggin", "email": "nickpiggin@yahoo.com.au", "time": "Sat Sep 03 15:54:50 2005 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@evo.osdl.org", "time": "Mon Sep 05 00:05:44 2005 -0700" }, "message": "[PATCH] mm: remove atomic\n\nThis bitop does not need to be atomic because it is performed when there will\nbe no references to the page (ie. the page is being freed).\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": "e310fd43256b3cf4d37f6447b8f7413ca744657a", "tree": "29537927762fd44459fa288b5241d4e79dbadedb", "parents": [ "5fa918b451f625870cd4275ca908b2392ee86a51" ], "author": { "name": "Martin J. Bligh", "email": "mbligh@mbligh.org", "time": "Fri Jul 29 22:59:18 2005 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Sat Jul 30 10:14:46 2005 -0700" }, "message": "[PATCH] Fix NUMA node sizing in nr_free_zone_pages\n\nWe are iterating over all nodes in nr_free_zone_pages(). Because the\nfallback zonelists contain all nodes in the system, and we walk all the\nzonelists, we\u0027re counting memory multiple times (once for each node). This\ncaused us to make a size estimate of 32GB for an 8GB AMD64 box, which makes\nall the dirty ratio calculations, etc incorrect.\n\nThere\u0027s still a further bug to fix from e820 holes causing overestimation\nas well, but this fix is separate, and good as is, and fixes one class of\nproblems. Problem found by Badari, and tested by Ram Pai - thanks!\n\nSigned-off-by: Martin J. Bligh \u003cmbligh@mbligh.org\u003e\nSigned-off-by: Matt Dobson \u003ccolpatch@us.ibm.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "12b1c5f382194d3f656e78fb5c9c8f2bfbe8ed8a", "tree": "052ec39f86482f4623531b247131aed93b6fb345", "parents": [ "165cd40235732644b1856a5ed5e158c9b93f6010" ], "author": { "name": "Andy Whitcroft", "email": "apw@shadowen.org", "time": "Wed Jul 27 11:44:02 2005 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Wed Jul 27 16:25:54 2005 -0700" }, "message": "[PATCH] Remove bogus warning in page_alloc.c\n\nOriginally __free_pages_bulk used the relative page number within a zone to\ndefine its buddies. This meant that to maintain the \"maximally aligned\"\nrequirements (that an allocation of size N will be aligned at least to N\nphysically) zones had to also be aligned to 1\u003c\u003cMAX_ORDER pages. When\n__free_pages_bulk was updated to use the relative page frame numbers of the\nfree\u0027d pages to pair buddies this released the alignment constraint on the\n\u0027left\u0027 edge of the zone. This allows _either_ edge of the zone to contain\npartial MAX_ORDER sized buddies. These simply never will have matching\nbuddies and thus will never make it to the \u0027top\u0027 of the pyramid.\n\nThe patch below removes a now redundant check ensuring that the mem_map was\naligned to MAX_ORDER.\n\nSigned-off-by: Andy Whitcroft \u003capw@shadowen.org\u003e\nCc: Christoph Lameter \u003cchristoph@lameter.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "37b173a4d03d1681e6c9529bc43d7a3308132db6", "tree": "478802dfe5afee12589d4d5533f8312a923c4ec2", "parents": [ "79b9ce311e192e9a31fd9f3cf1ee4a4edf9e2650" ], "author": { "name": "Marcelo Tosatti", "email": "marcelo.tosatti@cyclades.com", "time": "Thu Jul 07 17:56:05 2005 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Thu Jul 07 18:23:35 2005 -0700" }, "message": "[PATCH] remove completly bogus comment inside __alloc_pages() try_to_free_pages handling\n\nRemove completly bogus comment from did_some_progress !\u003d 0 handling (that\nsame comment is a few lines below on did_some_progress \u003d 0 case, where it\nbelongs).\n\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "79b9ce311e192e9a31fd9f3cf1ee4a4edf9e2650", "tree": "210896405b2b70aded7582750e20967df8c8e7bf", "parents": [ "cb2c0233755429037462e16ea0d5497a0092738c" ], "author": { "name": "Marcelo Tosatti", "email": "marcelo.tosatti@cyclades.com", "time": "Thu Jul 07 17:56:04 2005 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Thu Jul 07 18:23:35 2005 -0700" }, "message": "[PATCH] print order information when OOM killing\n\nDump the current allocation order when OOM killing.\n\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "3212c6be251219c0f4c2df0c93e122ff5be0d9dc", "tree": "8105201ba37d55beeb4a042d4691661ba400d098", "parents": [ "9c4142a133f7efee08238722b157656c3da7ca97" ], "author": { "name": "Bob Picco", "email": "bob.picco@hp.com", "time": "Mon Jun 27 14:36:28 2005 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@ppc970.osdl.org", "time": "Mon Jun 27 15:11:42 2005 -0700" }, "message": "[PATCH] fix WANT_PAGE_VIRTUAL in memmap_init\n\nI spotted this issue while in memmap_init last week. I can\u0027t say the\nchange has any test coverage by me. start_pfn was formerly used in main\n\"for\" loop. The fix is replace start_pfn with pfn.\n\nSigned-off-by: Bob Picco \u003cbob.picco@hp.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "29751f6991e845f7d002a6ae520bf996b38c8dcd", "tree": "f76c4c660ac4d204436f68851979343d2a9ba224", "parents": [ "641c767389b19859a45e6de46d8e18cd935bdb60" ], "author": { "name": "Andy Whitcroft", "email": "apw@shadowen.org", "time": "Thu Jun 23 00:08:00 2005 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@ppc970.osdl.org", "time": "Thu Jun 23 09:45:05 2005 -0700" }, "message": "[PATCH] sparsemem hotplug base\n\nMake sparse\u0027s initalization be accessible at runtime. This allows sparse\nmappings to be created after boot in a hotplug situation.\n\nThis patch is separated from the previous one just to give an indication how\nmuch of the sparse infrastructure is *just* for hotplug memory.\n\nThe section_mem_map doesn\u0027t really store a pointer. It stores something that\nis convenient to do some math against to get a pointer. It isn\u0027t valid to\njust do *section_mem_map, so I don\u0027t think it should be stored as a pointer.\n\nThere are a couple of things I\u0027d like to store about a section. First of all,\nthe fact that it is !NULL does not mean that it is present. There could be\nsuch a combination where section_mem_map *is* NULL, but the math gets you\nproperly to a real mem_map. So, I don\u0027t think that check is safe.\n\nSince we\u0027re storing 32-bit-aligned structures, we have a few bits in the\nbottom of the pointer to play with. Use one bit to encode whether there\u0027s\nreally a mem_map there, and the other one to tell whether there\u0027s a valid\nsection there. We need to distinguish between the two because sometimes\nthere\u0027s a gap between when a section is discovered to be present and when we\ncan get the mem_map for it.\n\nSigned-off-by: Dave Hansen \u003chaveblue@us.ibm.com\u003e\nSigned-off-by: Andy Whitcroft \u003capw@shadowen.org\u003e\nSigned-off-by: Jack Steiner \u003csteiner@sgi.com\u003e\nSigned-off-by: Bob Picco \u003cbob.picco@hp.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "641c767389b19859a45e6de46d8e18cd935bdb60", "tree": "b3ac95aaea213823c226b181b8a301e4ae95bd9d", "parents": [ "05b79bdcb48c18cd9b580c39e3efb9a1ab078151" ], "author": { "name": "Andy Whitcroft", "email": "apw@shadowen.org", "time": "Thu Jun 23 00:07:59 2005 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@ppc970.osdl.org", "time": "Thu Jun 23 09:45:05 2005 -0700" }, "message": "[PATCH] sparsemem swiss cheese numa layouts\n\nThe part of the sparsemem patch which modifies memmap_init_zone() has recently\nbecome a problem. It changes behavior so that there is a call to\npfn_to_page() for each individual page inside of a node\u0027s range:\nnode_start_pfn through node_end_pfn. It used to simply do this once, at the\nbeginning of the node, but having sparsemem\u0027s non-contiguous mem_map[]s inside\nof a node made it necessary to change.\n\nMike Kravetz recently wrote a patch which made the NUMA code accept some new\nkinds of layouts. The system\u0027s memory was laid out like this, with node 0\u0027s\nmemory in two pieces: one before and one after node 1\u0027s memory:\n\n\tNode 0: +++++ +++++\n\tNode 1: +++++\n\nPrevious behavior before Mike\u0027s patch was to assign nodes like this:\n\n\tNode 0: 00000 XXXXX\n\tNode 1: 11111\n\nWhere the \u0027X\u0027 areas were simply thrown away. The new behavior was to make the\npg_data_t span node 0 across all of its areas, including areas that are really\nnode 1\u0027s: Node 0: 000000000000000 Node 1: 11111\n\nThis wastes a little bit of mem_map space, but ends up being OK, and more\nfully utilizes the system\u0027s memory. memmap_init_zone() initializes all of the\n\"struct page\"s for node 0, even for the \"hole\", but those never get used,\nbecause there is no pfn_to_page() that resolves to those pages. However, only\ncalling pfn_to_page() once, memmap_init_zone() always uses the pages that were\nallocated for node0-\u003enode_mem_map because:\n\n\tstruct page *start \u003d pfn_to_page(start_pfn);\n\t// effectively start \u003d \u0026node-\u003enode_mem_map[0]\n\tfor (page \u003d start; page \u003c (start + size); page++) {\n\t\tinit_page_here();...\n\t\tpage++;\n\t}\n\nSlow, and wasteful, but generally harmless.\n\nBut, modify that to call pfn_to_page() for each loop iteration (like sparsemem\ndoes):\n\n\tfor (pfn \u003d start_pfn; pfn \u003c \u003c (start_pfn + size); pfn++++) {\n\t\tpage \u003d pfn_to_page(pfn);\n\t}\n\nAnd you end up trying to initialize node 1\u0027s pages too early, along with bogus\ndata from node 0. This patch checks for those weird layouts and declines to\ntouch the pages, making the more frequent pfn_to_page() calls OK to do.\n\nSigned-off-by: Dave Hansen \u003chaveblue@us.ibm.com\u003e\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": "d41dee369bff3b9dcb6328d4d822926c28cc2594", "tree": "a0405f3b7af3ebca21838a7d427bd75a067bf850", "parents": [ "af705362ab6018071310c5fcd436a6b457517d5f" ], "author": { "name": "Andy Whitcroft", "email": "apw@shadowen.org", "time": "Thu Jun 23 00:07:54 2005 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@ppc970.osdl.org", "time": "Thu Jun 23 09:45:04 2005 -0700" }, "message": "[PATCH] sparsemem memory model\n\nSparsemem abstracts the use of discontiguous mem_maps[]. This kind of\nmem_map[] is needed by discontiguous memory machines (like in the old\nCONFIG_DISCONTIGMEM case) as well as memory hotplug systems. Sparsemem\nreplaces DISCONTIGMEM when enabled, and it is hoped that it can eventually\nbecome a complete replacement.\n\nA significant advantage over DISCONTIGMEM is that it\u0027s completely separated\nfrom CONFIG_NUMA. When producing this patch, it became apparent in that NUMA\nand DISCONTIG are often confused.\n\nAnother advantage is that sparse doesn\u0027t require each NUMA node\u0027s ranges to be\ncontiguous. It can handle overlapping ranges between nodes with no problems,\nwhere DISCONTIGMEM currently throws away that memory.\n\nSparsemem uses an array to provide different pfn_to_page() translations for\neach SECTION_SIZE area of physical memory. This is what allows the mem_map[]\nto be chopped up.\n\nIn order to do quick pfn_to_page() operations, the section number of the page\nis encoded in page-\u003eflags. Part of the sparsemem infrastructure enables\nsharing of these bits more dynamically (at compile-time) between the\npage_zone() and sparsemem operations. However, on 32-bit architectures, the\nnumber of bits is quite limited, and may require growing the size of the\npage-\u003eflags type in certain conditions. Several things might force this to\noccur: a decrease in the SECTION_SIZE (if you want to hotplug smaller areas of\nmemory), an increase in the physical address space, or an increase in the\nnumber of used page-\u003eflags.\n\nOne thing to note is that, once sparsemem is present, the NUMA node\ninformation no longer needs to be stored in the page-\u003eflags. It might provide\nspeed increases on certain platforms and will be stored there if there is\nroom. But, if out of room, an alternate (theoretically slower) mechanism is\nused.\n\nThis patch introduces CONFIG_FLATMEM. It is used in almost all cases where\nthere used to be an #ifndef DISCONTIG, because SPARSEMEM and DISCONTIGMEM\noften have to compile out the same areas of code.\n\nSigned-off-by: Andy Whitcroft \u003capw@shadowen.org\u003e\nSigned-off-by: Dave Hansen \u003chaveblue@us.ibm.com\u003e\nSigned-off-by: Martin Bligh \u003cmbligh@aracnet.com\u003e\nSigned-off-by: Adrian Bunk \u003cbunk@stusta.de\u003e\nSigned-off-by: Yasunori Goto \u003cy-goto@jp.fujitsu.com\u003e\nSigned-off-by: Bob Picco \u003cbob.picco@hp.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "93b7504e3e6c1d98586854806e51bea329ea3aa9", "tree": "7b0d6f3a6214960daf3136f8c418178405521c07", "parents": [ "0e19243e9a19ef8e5994852671bd06bb51630811" ], "author": { "name": "Dave Hansen", "email": "haveblue@us.ibm.com", "time": "Thu Jun 23 00:07:47 2005 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@ppc970.osdl.org", "time": "Thu Jun 23 09:45:03 2005 -0700" }, "message": "[PATCH] Introduce new Kconfig option for NUMA or DISCONTIG\n\nThere is some confusion that arose when working on SPARSEMEM patch between\nwhat is needed for DISCONTIG vs. NUMA.\n\nMultiple pg_data_t\u0027s are needed for DISCONTIGMEM or NUMA, independently.\nAll of the current NUMA implementations require an implementation of\nDISCONTIG. Because of this, quite a lot of code which is really needed for\nNUMA is actually under DISCONTIG #ifdefs. For SPARSEMEM, we changed some\nof these #ifdefs to CONFIG_NUMA, but that broke the DISCONTIG\u003dy and NUMA\u003dn\ncase.\n\nIntroducing this new NEED_MULTIPLE_NODES config option allows code that is\nneeded for both NUMA or DISCONTIG to be separated out from code that is\nspecific to DISCONTIG.\n\nOne great advantage of this approach is that it doesn\u0027t require every\narchitecture to be converted over. All of the current implementations\nshould \"just work\", only the ones implementing SPARSEMEM will have to be\nfixed up.\n\nThe change to free_area_init() makes it work inside, or out of the new\nconfig option.\n\nSigned-off-by: Dave Hansen \u003chaveblue@us.ibm.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "348f8b6c4837a07304d2f72b11ce8d96588065e0", "tree": "f4c6c332b2c327630b284598325dff2f44e6c9cf", "parents": [ "6f167ec721108c9282d54424516a12c805e3c306" ], "author": { "name": "Dave Hansen", "email": "haveblue@us.ibm.com", "time": "Thu Jun 23 00:07:40 2005 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@ppc970.osdl.org", "time": "Thu Jun 23 09:45:01 2005 -0700" }, "message": "[PATCH] sparsemem base: reorganize page-\u003eflags bit operations\n\nGenerify the value fields in the page_flags. The aim is to allow the location\nand size of these fields to be varied. Additionally we want to move away from\nfixed allocations per field whilst still enforcing the overall bit utilisation\nlimits. We rely on the compiler to spot and optimise the accessor functions.\n\nSigned-off-by: Andy Whitcroft \u003capw@shadowen.org\u003e\nSigned-off-by: Dave Hansen \u003chaveblue@us.ibm.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "6f167ec721108c9282d54424516a12c805e3c306", "tree": "f7094a2524611ede76b32e4cc3c07987b7b0e275", "parents": [ "c2ebaa425e6630adcbf757b004d257dd4204925b" ], "author": { "name": "Dave Hansen", "email": "haveblue@us.ibm.com", "time": "Thu Jun 23 00:07:39 2005 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@ppc970.osdl.org", "time": "Thu Jun 23 09:45:01 2005 -0700" }, "message": "[PATCH] sparsemem base: simple NUMA remap space allocator\n\nIntroduce a simple allocator for the NUMA remap space. This space is very\nscarce, used for structures which are best allocated node local.\n\nThis mechanism is also used on non-NUMA ia64 systems with a vmem_map to keep\nthe pgdat-\u003enode_mem_map initialized in a consistent place for all\narchitectures.\n\nIssues:\no alloc_remap takes a node_id where we might expect a pgdat which was intended\n to allow us to allocate the pgdat\u0027s using this mechanism; which we do not yet\n do. Could have alloc_remap_node() and alloc_remap_nid() for this purpose.\n\nSigned-off-by: Andy Whitcroft \u003capw@shadowen.org\u003e\nSigned-off-by: Dave Hansen \u003chaveblue@us.ibm.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "b7c84c6ada2be942eca6722edb2cfaad412cd5de", "tree": "06cba21e92755bf6b815221d5124ca0f9faf7985", "parents": [ "a4936044001694f033fe4ea94d6034d51a6b465c" ], "author": { "name": "Christoph Lameter", "email": "clameter@engr.sgi.com", "time": "Wed Jun 22 20:26:07 2005 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@ppc970.osdl.org", "time": "Wed Jun 22 20:42:32 2005 -0700" }, "message": "[PATCH] boot_pageset must not be freed.\n\nThe boot_pageset needs to be preserved for hotplugging and for off line\nprocessors and nodes. Otherwise pointers will point into memory that has\nnow a different use. /proc/zoneinfo is currently showing strange results\nif processors / nodes are not present.\n\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "c0d62219a48bd91ec40fb254c930914dccc77ff1", "tree": "66049d2eb980b67bd745d19e97ada5a992975c06", "parents": [ "b4955ce3dd0818b56da532a16c9a4a3804a558ee" ], "author": { "name": "Denis Vlasenko", "email": "vda@ilport.com.ua", "time": "Tue Jun 21 17:15:14 2005 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@ppc970.osdl.org", "time": "Tue Jun 21 18:46:21 2005 -0700" }, "message": "[PATCH] Kill stray newline\n\nOOM killer prints a stray newline.\n\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "334795eca421287c41c257992027d29659dc0f97", "tree": "c371467bea94f77bd340730c9cac724cca194b20", "parents": [ "45918e1a8bfcabc1cb4570b8df276655020eac45" ], "author": { "name": "Hugh Dickins", "email": "hugh@veritas.com", "time": "Tue Jun 21 17:15:08 2005 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@ppc970.osdl.org", "time": "Tue Jun 21 18:46:19 2005 -0700" }, "message": "[PATCH] bad_page: clear reclaim and slab\n\nSince free_pages_check complains if PG_reclaim or PG_slab is set, bad_page\nought to clear them to avoid repetitive reports (Nikita noticed this too).\nLet prep_new_page check page_count and PG_slab as free_pages_check does.\n\nSigned-off-by: Hugh Dickins \u003chugh@veritas.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "2caaad41e4aa8f5dd999695b4ddeaa0e7f3912a4", "tree": "4ce8426bf3a85d92efc5a0f6c981f54963d472e8", "parents": [ "4ae7c03943fca73f23bc0cdb938070f41b98101f" ], "author": { "name": "Christoph Lameter", "email": "christoph@graphe.net", "time": "Tue Jun 21 17:15:00 2005 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@ppc970.osdl.org", "time": "Tue Jun 21 18:46:18 2005 -0700" }, "message": "[PATCH] Reduce size of huge boot per_cpu_pageset\n\nReduce size of the huge per_cpu_pageset structure in __initdata introduced\ninto mm1 with the pageset localization patchset. Use one specially\nconfigured pageset per cpu for all zones and nodes during bootup.\n\n- Avoid duplication of pageset initialization code.\n- do the adding to the pageset list before potential free_pages_bulk\n in free_hot_cold_page (otherwise we would have to hold a page\n in a pageset during the period that the boot pagesets are in use).\n- remove mistaken __cpuinitdata attribute and revert back to __initdata\n for the boot pageset. A boot pageset is not necessary for cpu hotplug.\n\nTested for UP SMP NUMA on x86_64 (2.6.12-rc6-mm1): UP SMP NUMA Tested on\nIA64 (2.6.12-rc5-mm2): NUMA (2.6.12-rc6-mm1 broken for IA64 because of\nsparsemem patches)\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": "4ae7c03943fca73f23bc0cdb938070f41b98101f", "tree": "d4b3a7369896af7aa7bb58d0d1699be91fc4aa0d", "parents": [ "578c2fd6a7f378434655e5c480e23152a3994404" ], "author": { "name": "Christoph Lameter", "email": "clameter@engr.sgi.com", "time": "Tue Jun 21 17:14:57 2005 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@ppc970.osdl.org", "time": "Tue Jun 21 18:46:18 2005 -0700" }, "message": "[PATCH] Periodically drain non local pagesets\n\nThe pageset array can potentially acquire a huge amount of memory on large\nNUMA systems. F.e. on a system with 512 processors and 256 nodes there\nwill be 256*512 pagesets. If each pageset only holds 5 pages then we are\ntalking about 655360 pages.With a 16K page size on IA64 this results in\npotentially 10 Gigabytes of memory being trapped in pagesets. The typical\ncases are much less for smaller systems but there is still the potential of\nmemory being trapped in off node pagesets. Off node memory may be rarely\nused if local memory is available and so we may potentially have memory in\nseldom used pagesets without this patch.\n\nThe slab allocator flushes its per cpu caches every 2 seconds. The\nfollowing patch flushes the off node pageset caches in the same way by\ntying into the slab flush.\n\nThe patch also changes /proc/zoneinfo to include the number of pages\ncurrently in each pageset.\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": "578c2fd6a7f378434655e5c480e23152a3994404", "tree": "3a6408c416e3825cd17e33ac776425a52b743adc", "parents": [ "c2f29ea111e3344ed48257c2a142c3db514e1529" ], "author": { "name": "Janet Morgan", "email": "janetmor@us.ibm.com", "time": "Tue Jun 21 17:14:56 2005 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@ppc970.osdl.org", "time": "Tue Jun 21 18:46:17 2005 -0700" }, "message": "[PATCH] add OOM debug\n\nThis patch provides more debug info when the system is OOM. It displays\nmemory stats (basically sysrq-m info) from __alloc_pages() when page\nallocation fails and during OOM kill.\n\nThanks to Dave Jones for coming up with the idea.\n\nSigned-off-by: Janet Morgan \u003cjanetmor@us.ibm.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "c2f29ea111e3344ed48257c2a142c3db514e1529", "tree": "6750edefb1f08a6be545250fdaca72fa211ef338", "parents": [ "83e5d8f7253cb7b14472385a6d57df1e9f848e8e" ], "author": { "name": "Benjamin LaHaise", "email": "bcrl@kvack.org", "time": "Tue Jun 21 17:14:55 2005 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@ppc970.osdl.org", "time": "Tue Jun 21 18:46:17 2005 -0700" }, "message": "[PATCH] __read_page_state(): pass unsigned long instead of unsigned\n\nBy making the offset argument of __read_page_state an unsigned long instead of\nunsigned, we can avoid forcing the compiler to sign extend a usually constant\nargument. This saves 1 instruction on x86-64.\n\nSigned-off-by: Benjamin LaHaise \u003cbenjamin.c.lahaise@intel.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "83e5d8f7253cb7b14472385a6d57df1e9f848e8e", "tree": "bafb314103aefbb5699aed2b2b284d8954a888d9", "parents": [ "1ad539b2bd89bf2e129123eb24d5bcc4484a35de" ], "author": { "name": "Benjamin LaHaise", "email": "bcrl@kvack.org", "time": "Tue Jun 21 17:14:54 2005 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@ppc970.osdl.org", "time": "Tue Jun 21 18:46:17 2005 -0700" }, "message": "[PATCH] __mod_page_state(): pass unsigned long instead of unsigned\n\nBy making the offset argument of __mod_page_state an unsigned long instead\nof unsigned, we can avoid forcing the compiler to sign extend a usually\nconstant argument. This saves 1 instruction on x86-64.\n\nSigned-off-by: Benjamin LaHaise \u003cbenjamin.c.lahaise@intel.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "1ad539b2bd89bf2e129123eb24d5bcc4484a35de", "tree": "e416e208cdbd5d9890d39e39384e4ec913c26ef6", "parents": [ "cbe37d093707762fc0abb280781e6a82a9d8d568" ], "author": { "name": "Darren Hart", "email": "dvhltc@us.ibm.com", "time": "Tue Jun 21 17:14:53 2005 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@ppc970.osdl.org", "time": "Tue Jun 21 18:46:17 2005 -0700" }, "message": "[PATCH] vm: try_to_free_pages unused argument\n\ntry_to_free_pages accepts a third argument, order, but hasn\u0027t used it since\nbefore 2.6.0. The following patch removes the argument and updates all the\ncalls to try_to_free_pages.\n\nSigned-off-by: Darren Hart \u003cdvhltc@us.ibm.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "e7c8d5c9955a4d2e88e36b640563f5d6d5aba48a", "tree": "f04f7b0d08cbc46d2f190a85904a3dd696dc6e88", "parents": [ "63551ae0feaaa23807ebea60de1901564bbef32e" ], "author": { "name": "Christoph Lameter", "email": "christoph@lameter.com", "time": "Tue Jun 21 17:14:47 2005 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@ppc970.osdl.org", "time": "Tue Jun 21 18:46:16 2005 -0700" }, "message": "[PATCH] node local per-cpu-pages\n\nThis patch modifies the way pagesets in struct zone are managed.\n\nEach zone has a per-cpu array of pagesets. So any particular CPU has some\nmemory in each zone structure which belongs to itself. Even if that CPU is\nnot local to that zone.\n\nSo the patch relocates the pagesets for each cpu to the node that is nearest\nto the cpu instead of allocating the pagesets in the (possibly remote) target\nzone. This means that the operations to manage pages on remote zone can be\ndone with information available locally.\n\nWe play a macro trick so that non-NUMA pmachines avoid the additional\npointer chase on the page allocator fastpath.\n\nAIM7 benchmark on a 32 CPU SGI Altix\n\nw/o patches:\nTasks jobs/min jti jobs/min/task real cpu\n 1 484.68 100 484.6769 12.01 1.97 Fri Mar 25 11:01:42 2005\n 100 27140.46 89 271.4046 21.44 148.71 Fri Mar 25 11:02:04 2005\n 200 30792.02 82 153.9601 37.80 296.72 Fri Mar 25 11:02:42 2005\n 300 32209.27 81 107.3642 54.21 451.34 Fri Mar 25 11:03:37 2005\n 400 34962.83 78 87.4071 66.59 588.97 Fri Mar 25 11:04:44 2005\n 500 31676.92 75 63.3538 91.87 742.71 Fri Mar 25 11:06:16 2005\n 600 36032.69 73 60.0545 96.91 885.44 Fri Mar 25 11:07:54 2005\n 700 35540.43 77 50.7720 114.63 1024.28 Fri Mar 25 11:09:49 2005\n 800 33906.70 74 42.3834 137.32 1181.65 Fri Mar 25 11:12:06 2005\n 900 34120.67 73 37.9119 153.51 1325.26 Fri Mar 25 11:14:41 2005\n 1000 34802.37 74 34.8024 167.23 1465.26 Fri Mar 25 11:17:28 2005\n\nwith slab API changes and pageset patch:\n\nTasks jobs/min jti jobs/min/task real cpu\n 1 485.00 100 485.0000 12.00 1.96 Fri Mar 25 11:46:18 2005\n 100 28000.96 89 280.0096 20.79 150.45 Fri Mar 25 11:46:39 2005\n 200 32285.80 79 161.4290 36.05 293.37 Fri Mar 25 11:47:16 2005\n 300 40424.15 84 134.7472 43.19 438.42 Fri Mar 25 11:47:59 2005\n 400 39155.01 79 97.8875 59.46 590.05 Fri Mar 25 11:48:59 2005\n 500 37881.25 82 75.7625 76.82 730.19 Fri Mar 25 11:50:16 2005\n 600 39083.14 78 65.1386 89.35 872.79 Fri Mar 25 11:51:46 2005\n 700 38627.83 77 55.1826 105.47 1022.46 Fri Mar 25 11:53:32 2005\n 800 39631.94 78 49.5399 117.48 1169.94 Fri Mar 25 11:55:30 2005\n 900 36903.70 79 41.0041 141.94 1310.78 Fri Mar 25 11:57:53 2005\n 1000 36201.23 77 36.2012 160.77 1458.31 Fri Mar 25 12:00:34 2005\n\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nSigned-off-by: Shobhit Dayal \u003cshobhit@calsoftinc.com\u003e\nSigned-off-by: Shai Fultheim \u003cShai@Scalex86.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "1e7e5a9048b30c57ba1ddaa6cdf59b21b65cde99", "tree": "26eb9c483718ca1a0fad23597c0dfd3a69e9f080", "parents": [ "0c35bbadc59f5ed105c34471143eceb4c0dd9c95" ], "author": { "name": "Martin Hicks", "email": "mort@sgi.com", "time": "Tue Jun 21 17:14:43 2005 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@ppc970.osdl.org", "time": "Tue Jun 21 18:46:14 2005 -0700" }, "message": "[PATCH] VM: rate limit early reclaim\n\nWhen early zone reclaim is turned on the LRU is scanned more frequently when a\nzone is low on memory. This limits when the zone reclaim can be called by\nskipping the scan if another thread (either via kswapd or sync reclaim) is\nalready reclaiming from the zone.\n\nSigned-off-by: Martin Hicks \u003cmort@sgi.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "0c35bbadc59f5ed105c34471143eceb4c0dd9c95", "tree": "d82de388e8c0a38fa4b1d27ad372e84c9f01e013", "parents": [ "753ee728964e5afb80c17659cc6c3a6fd0a42fe0" ], "author": { "name": "Martin Hicks", "email": "mort@sgi.com", "time": "Tue Jun 21 17:14:42 2005 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@ppc970.osdl.org", "time": "Tue Jun 21 18:46:14 2005 -0700" }, "message": "[PATCH] VM: add __GFP_NORECLAIM\n\nWhen using the early zone reclaim, it was noticed that allocating new pages\nthat should be spread across the whole system caused eviction of local pages.\n\nThis adds a new GFP flag to prevent early reclaim from happening during\ncertain allocation attempts. The example that is implemented here is for page\ncache pages. We want page cache pages to be spread across the whole system,\nand we don\u0027t want page cache pages to evict other pages to get local memory.\n\nSigned-off-by: Martin Hicks \u003cmort@sgi.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "753ee728964e5afb80c17659cc6c3a6fd0a42fe0", "tree": "41c9a7700d0858c1f77c5bdaba97e5b636f69b06", "parents": [ "bfbb38fb808ac23ef44472d05d9bb36edfb49ed0" ], "author": { "name": "Martin Hicks", "email": "mort@sgi.com", "time": "Tue Jun 21 17:14:41 2005 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@ppc970.osdl.org", "time": "Tue Jun 21 18:46:14 2005 -0700" }, "message": "[PATCH] VM: early zone reclaim\n\nThis is the core of the (much simplified) early reclaim. The goal of this\npatch is to reclaim some easily-freed pages from a zone before falling back\nonto another zone.\n\nOne of the major uses of this is NUMA machines. With the default allocator\nbehavior the allocator would look for memory in another zone, which might be\noff-node, before trying to reclaim from the current zone.\n\nThis adds a zone tuneable to enable early zone reclaim. It is selected on a\nper-zone basis and is turned on/off via syscall.\n\nAdding some extra throttling on the reclaim was also required (patch\n4/4). Without the machine would grind to a crawl when doing a \"make -j\"\nkernel build. Even with this patch the System Time is higher on\naverage, but it seems tolerable. Here are some numbers for kernbench\nruns on a 2-node, 4cpu, 8Gig RAM Altix in the \"make -j\" run:\n\n\t\t\twall user sys %cpu ctx sw. sleeps\n\t\t\t---- ---- --- ---- ------ ------\nNo patch\t\t1009 1384 847 258 298170 504402\nw/patch, no reclaim 880 1376 667 288 254064 396745\nw/patch \u0026 reclaim 1079 1385 926 252 291625 548873\n\nThese numbers are the average of 2 runs of 3 \"make -j\" runs done right\nafter system boot. Run-to-run variability for \"make -j\" is huge, so\nthese numbers aren\u0027t terribly useful except to seee that with reclaim\nthe benchmark still finishes in a reasonable amount of time.\n\nI also looked at the NUMA hit/miss stats for the \"make -j\" runs and the\nreclaim doesn\u0027t make any difference when the machine is thrashing away.\n\nDoing a \"make -j8\" on a single node that is filled with page cache pages\ntakes 700 seconds with reclaim turned on and 735 seconds without reclaim\n(due to remote memory accesses).\n\nThe simple zone_reclaim syscall program is at\nhttp://www.bork.org/~mort/sgi/zone_reclaim.c\n\nSigned-off-by: Martin Hicks \u003cmort@sgi.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "295ab93497ec703f7d6eaf0787dd9768b83035fe", "tree": "e3dce05d4cab0d7d3907a7357d37932c99ffd76d", "parents": [ "05b7438475ddbac47e75506913d44550f0e75938" ], "author": { "name": "Nikita Danilov", "email": "nikita@clusterfs.com", "time": "Tue Jun 21 17:14:38 2005 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@ppc970.osdl.org", "time": "Tue Jun 21 18:46:14 2005 -0700" }, "message": "[PATCH] mm: add /proc/zoneinfo\n\nAdd /proc/zoneinfo file to display information about memory zones. Useful\nto analyze VM behaviour.\n\nSigned-off-by: Nikita Danilov \u003cnikita@clusterfs.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "7223a93a5321f84337647aef62ef947afd8df41a", "tree": "10d4c8e4cb1b4ddf33ca32efbe915ca91d19fcd1", "parents": [ "2e34f07ff0c944399a6456e2d91cf0ca1d9a497c" ], "author": { "name": "Dean Nelson", "email": "dcn@sgi.com", "time": "Wed Mar 23 19:00:00 2005 -0700" }, "committer": { "name": "Tony Luck", "email": "tony.luck@intel.com", "time": "Tue May 03 12:09:32 2005 -0700" }, "message": "[IA64] Export node_online_map and node_possible_map\n\nExport node_online_map and node_possible_map so that kernel modules can use\nthe nodemask macros, like, for_each_node() and for_each_online_node().\n\nSigned-off-by: Dean Nelson \u003cdcn@sgi.com\u003e\nSigned-off-by: Tony Luck \u003ctony.luck@intel.com\u003e\n" }, { "commit": "4dc3b16ba18c0f967ad100c52fa65b01a4f76ff0", "tree": "fa038ad8969980eec6cef5b737872fda9feb4c6a", "parents": [ "333f981720d619e2038b980a55ad01b10580eb9f" ], "author": { "name": "Pavel Pisa", "email": "pisa@cmp.felk.cvut.cz", "time": "Sun May 01 08:59:25 2005 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@ppc970.osdl.org", "time": "Sun May 01 08:59:25 2005 -0700" }, "message": "[PATCH] DocBook: changes and extensions to the kernel documentation\n\nI have recompiled Linux kernel 2.6.11.5 documentation for me and our\nuniversity students again. The documentation could be extended for more\nsources which are equipped by structured comments for recent 2.6 kernels. I\nhave tried to proceed with that task. I have done that more times from 2.6.0\ntime and it gets boring to do same changes again and again. Linux kernel\ncompiles after changes for i386 and ARM targets. I have added references to\nsome more files into kernel-api book, I have added some section names as well.\n So please, check that changes do not break something and that categories are\nnot too much skewed.\n\nI have changed kernel-doc to accept \"fastcall\" and \"asmlinkage\" words reserved\nby kernel convention. Most of the other changes are modifications in the\ncomments to make kernel-doc happy, accept some parameters description and do\nnot bail out on errors. Changed \u003cpid\u003e to @pid in the description, moved some\n#ifdef before comments to correct function to comments bindings, etc.\n\nYou can see result of the modified documentation build at\n http://cmp.felk.cvut.cz/~pisa/linux/lkdb-2.6.11.tar.gz\n\nSome more sources are ready to be included into kernel-doc generated\ndocumentation. Sources has been added into kernel-api for now. Some more\nsection names added and probably some more chaos introduced as result of quick\ncleanup work.\n\nSigned-off-by: Pavel Pisa \u003cpisa@cmp.felk.cvut.cz\u003e\nSigned-off-by: Martin Waitz \u003ctali@admingilde.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "edfbe2b0038723e5699ab22695ccd62b5542a5c1", "tree": "f1c613d32824f274b0e3daf492e87b0c9051c789", "parents": [ "2054606ad6dd6fee559fe790f190b15ed9355237" ], "author": { "name": "KAMEZAWA Hiroyuki", "email": "kamezawa.hiroyu@jp.fujitsu.com", "time": "Sun May 01 08:58:37 2005 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@ppc970.osdl.org", "time": "Sun May 01 08:58:37 2005 -0700" }, "message": "[PATCH] count bounce buffer pages in vmstat\n\nThis is a patch for counting the number of pages for bounce buffers. It\u0027s\nshown in /proc/vmstat.\n\nCurrently, the number of bounce pages are not counted anywhere. So, if\nthere are many bounce pages, it seems that there are leaked pages. And\nit\u0027s difficult for a user to imagine the usage of bounce pages. So, it\u0027s\nmeaningful to show # of bouce pages.\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": "b84a35be0285229b0a8a5e2e04d79360c5b75562", "tree": "3ff63fde8534eb615b408d047b461015781f6a5b", "parents": [ "8e30f272a93ec9c1d5c305c5040dfaebc880499d" ], "author": { "name": "Nick Piggin", "email": "nickpiggin@yahoo.com.au", "time": "Sun May 01 08:58:36 2005 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@ppc970.osdl.org", "time": "Sun May 01 08:58:36 2005 -0700" }, "message": "[PATCH] mempool: NOMEMALLOC and NORETRY\n\nMempools have 2 problems.\n\nThe first is that mempool_alloc can possibly get stuck in __alloc_pages\nwhen they should opt to fail, and take an element from their reserved pool.\n\nThe second is that it will happily eat emergency PF_MEMALLOC reserves\ninstead of going to their reserved pools.\n\nFix the first by passing __GFP_NORETRY in the allocation calls in\nmempool_alloc. Fix the second by introducing a __GFP_MEMPOOL flag which\ndirects the page allocator not to allocate from the reserve pool.\n\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "8e30f272a93ec9c1d5c305c5040dfaebc880499d", "tree": "ed5b54d2895d3e93768f79b2ec2b968f79bf7013", "parents": [ "81b4082dc7666e2bc5ec229d8e837f3bafb96883" ], "author": { "name": "Nick Piggin", "email": "nickpiggin@yahoo.com.au", "time": "Sun May 01 08:58:36 2005 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@ppc970.osdl.org", "time": "Sun May 01 08:58:36 2005 -0700" }, "message": "[PATCH] mm: pcp use non powers of 2 for batch size\n\nJack Steiner reported this to have fixed his problem (bad colouring):\n\"The patches fix both problems that I found - bad\n coloring \u0026 excessive pages in pagesets.\"\n\nIn most workloads this is not likely to be such a pronounced problem,\nhowever it should help corner cases. And avoiding powers of 2 in these\ntypes of memory operations is always a good idea.\n\nSigned-off-by: 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": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "tree": "0bba044c4ce775e45a88a51686b5d9f90697ea9d", "parents": [], "author": { "name": "Linus Torvalds", "email": "torvalds@ppc970.osdl.org", "time": "Sat Apr 16 15:20:36 2005 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@ppc970.osdl.org", "time": "Sat Apr 16 15:20:36 2005 -0700" }, "message": "Linux-2.6.12-rc2\n\nInitial git repository build. I\u0027m not bothering with the full history,\neven though we have it. We can create a separate \"historical\" git\narchive of that later if we want to, and in the meantime it\u0027s about\n3.2GB when imported into git - space that would just make the early\ngit days unnecessarily complicated, when we don\u0027t have a lot of good\ninfrastructure for it.\n\nLet it rip!\n" } ] }