)]}'
{
  "log": [
    {
      "commit": "193faea9280a809cc30e81d7e503e01b1d7b7042",
      "tree": "d4b80d4795ac1e708b8a13d45d571383617b761c",
      "parents": [
        "4249e08e92647b406422553bfb16276b2bf849aa"
      ],
      "author": {
        "name": "Stephen Rothwell",
        "email": "sfr@canb.auug.org.au",
        "time": "Fri Jun 08 13:46:51 2007 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@woody.linux-foundation.org",
        "time": "Fri Jun 08 17:23:33 2007 -0700"
      },
      "message": "Move three functions that are only needed for CONFIG_MEMORY_HOTPLUG\n\ninto the appropriate #ifdef.\n\nSigned-off-by: Stephen Rothwell \u003csfr@canb.auug.org.au\u003e\nCc: Yasunori Goto \u003cy-goto@jp.fujitsu.com\u003e\nCc: Andy Whitcroft \u003capw@shadowen.org\u003e\nCc: Badari Pulavarty \u003cpbadari@us.ibm.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "2e1c49db4c640b35df13889b86b9d62215ade4b6",
      "tree": "8b886843a57f5ff683700a9f623294e3f24d07ef",
      "parents": [
        "fa0aa866c82e441787e07169cb4925e3b673e891"
      ],
      "author": {
        "name": "Zou Nan hai",
        "email": "nanhai.zou@intel.com",
        "time": "Fri Jun 01 00:46:28 2007 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@woody.linux-foundation.org",
        "time": "Fri Jun 01 08:18:27 2007 -0700"
      },
      "message": "x86_64: allocate sparsemem memmap above 4G\n\nOn systems with huge amount of physical memory, VFS cache and memory memmap\nmay eat all available system memory under 4G, then the system may fail to\nallocate swiotlb bounce buffer.\n\nThere was a fix for this issue in arch/x86_64/mm/numa.c, but that fix dose\nnot cover sparsemem model.\n\nThis patch add fix to sparsemem model by first try to allocate memmap above\n4G.\n\nSigned-off-by: Zou Nan hai \u003cnanhai.zou@intel.com\u003e\nAcked-by: Suresh Siddha \u003csuresh.b.siddha@intel.com\u003e\nCc: Andi Kleen \u003cak@suse.de\u003e\nCc: \u003cstable@kernel.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "577a32f620271416d05f852477151fb51c790bc6",
      "tree": "9c4f219f59fc8117aa7d376d130d57f1ac841a8e",
      "parents": [
        "92080309df1975729a9f8b45fd56528817e34db8"
      ],
      "author": {
        "name": "Sam Ravnborg",
        "email": "sam@ravnborg.org",
        "time": "Thu May 17 23:29:25 2007 +0200"
      },
      "committer": {
        "name": "Sam Ravnborg",
        "email": "sam@ravnborg.org",
        "time": "Sat May 19 09:11:58 2007 +0200"
      },
      "message": "mm: fix section mismatch warnings\n\nmodpost had two cases hardcoded for mm/\nShift over to __init_refok and kill the\nhardcoded function names in modpost.\n\nThis has the drawback that the functions\nwill always be kept no matter configuration.\nWith previous code the function were placed in\ninit section if configuration allowed it.\n\nSigned-off-by: Sam Ravnborg \u003csam@ravnborg.org\u003e\n"
    },
    {
      "commit": "72280ede316911fd5a82ef78d12a6705b1007d36",
      "tree": "c6cdec169d300f6967c47771917d99035423bf91",
      "parents": [
        "a3142c8e1dd57ff48040bdb3478cff9312543dc3"
      ],
      "author": {
        "name": "Yasunori Goto",
        "email": "y-goto@jp.fujitsu.com",
        "time": "Tue May 08 00:23:10 2007 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@woody.linux-foundation.org",
        "time": "Tue May 08 11:14:57 2007 -0700"
      },
      "message": "Add white list into modpost.c for memory hotplug code and ia64\u0027s machvec section\n\nThis patch is add white list into modpost.c for some functions and\nia64\u0027s section to fix section mismatchs.\n\n  sparse_index_alloc() and zone_wait_table_init() calls bootmem allocator\n  at boot time, and kmalloc/vmalloc at hotplug time. If config\n  memory hotplug is on, there are references of bootmem allocater(init text)\n  from them (normal text). This is cause of section mismatch.\n\n  Bootmem is called by many functions and it must be\n  used only at boot time. I think __init of them should keep for\n  section mismatch check. So, I would like to register sparse_index_alloc()\n  and zone_wait_table_init() into white list.\n\n  In addition, ia64\u0027s .machvec section is function table of some platform\n  dependent code. It is mixture of .init.text and normal text. These\n  reference of __init functions are valid too.\n\nSigned-off-by: Yasunori Goto \u003cy-goto@jp.fujitsu.com\u003e\nCc: Sam Ravnborg \u003csam@ravnborg.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "a3142c8e1dd57ff48040bdb3478cff9312543dc3",
      "tree": "14beeb03421338b917a956e9269a2ce95e0f62cf",
      "parents": [
        "0ceb331433e8aad9c5f441a965d7c681f8b9046f"
      ],
      "author": {
        "name": "Yasunori Goto",
        "email": "y-goto@jp.fujitsu.com",
        "time": "Tue May 08 00:23:07 2007 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@woody.linux-foundation.org",
        "time": "Tue May 08 11:14:57 2007 -0700"
      },
      "message": "Fix section mismatch of memory hotplug related code.\n\nThis is to fix many section mismatches of code related to memory hotplug.\nI checked compile with memory hotplug on/off on ia64 and x86-64 box.\n\nSigned-off-by: Yasunori Goto \u003cy-goto@jp.fujitsu.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "6a5b518f222449e707e553573f937faf6e57f03d",
      "tree": "df05575e5f9c128fe564cfe83ce7fe4255b39028",
      "parents": [
        "7db00552d937e4c0825895734ba5fe257dfe8ced"
      ],
      "author": {
        "name": "David S. Miller",
        "email": "davem@sunset.davemloft.net",
        "time": "Sun May 06 23:54:25 2007 -0700"
      },
      "committer": {
        "name": "David S. Miller",
        "email": "davem@sunset.davemloft.net",
        "time": "Sun May 06 23:54:25 2007 -0700"
      },
      "message": "[MM]: sparse_init() should be __init.\n\nSigned-off-by: David S. Miller \u003cdavem@davemloft.net\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": "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": "f2d0aa5bf8d4f7ae4cb1a7feebf5b1afddd0b9b0",
      "tree": "f018b4472a40d6ed1d815b68a716f29991993aba",
      "parents": [
        "969b755aadf7bcf3df5991a127a103acd0145a52"
      ],
      "author": {
        "name": "Yasunori Goto",
        "email": "y-goto@jp.fujitsu.com",
        "time": "Sat Oct 28 10:38:32 2006 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@g5.osdl.org",
        "time": "Sat Oct 28 11:30:52 2006 -0700"
      },
      "message": "[PATCH] memory hotplug: __GFP_NOWARN is better for __kmalloc_section_memmap()\n\nAdd __GFP_NOWARN flag to calling of __alloc_pages() in\n__kmalloc_section_memmap().  It can reduce noisy failure message.\n\nIn ia64, section size is 1 GB, this means that order 8 pages are necessary\nfor each section\u0027s memmap.  It is often very hard requirement under heavy\nmemory pressure as you know.  So, __alloc_pages() gives up allocation and\nshows many noisy stack traces which means no page for each sections.\n(Current my environment shows 32 times of stack trace....)\n\nBut, __kmalloc_section_memmap() calls vmalloc() after failure of it, and it\ncan succeed allocation of memmap.  So, its stack trace warning becomes just\nnoisy.  I suppose it shouldn\u0027t be shown.\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": "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": "34af946a22724c4e2b204957f2b24b22a0fb121c",
      "tree": "7881dcbd0a698257c126198cdb6d97d4e45ee51e",
      "parents": [
        "b6cd0b772dcc5dc9b4c03d53946474dee399fa72"
      ],
      "author": {
        "name": "Ingo Molnar",
        "email": "mingo@elte.hu",
        "time": "Tue Jun 27 02:53:55 2006 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@g5.osdl.org",
        "time": "Tue Jun 27 17:32:39 2006 -0700"
      },
      "message": "[PATCH] spin/rwlock init cleanups\n\nlocking init cleanups:\n\n - convert \" \u003d SPIN_LOCK_UNLOCKED\" to spin_lock_init() or DEFINE_SPINLOCK()\n - convert rwlocks in a similar manner\n\nthis patch was generated automatically.\n\nMotivation:\n\n - cleanliness\n - lockdep needs control of lock initialization, which the open-coded\n   variants do not give\n - it\u0027s also useful for -rt and for lock debugging in general\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\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": "30c253e6da655d73eb8bfe2adca9b8f4d82fb81e",
      "tree": "97c49ad364855b95ce52d97a62d176a077ff2a85",
      "parents": [
        "ddc2e812d592457747c4367fb73edcaa8e1e49ff"
      ],
      "author": {
        "name": "Andy Whitcroft",
        "email": "apw@shadowen.org",
        "time": "Fri Jun 23 02:03:41 2006 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@g5.osdl.org",
        "time": "Fri Jun 23 07:42:51 2006 -0700"
      },
      "message": "[PATCH] sparsemem: record nid during memory present\n\nRecord the node id as we mark sections for instantiation.  Use this nid\nduring instantiation to direct allocations.\n\nSigned-off-by: Andy Whitcroft \u003capw@shadowen.org\u003e\nCc: Mike Kravetz \u003ckravetz@us.ibm.com\u003e\nCc: Dave Hansen \u003chaveblue@us.ibm.com\u003e\nCc: Mel Gorman \u003cmel@csn.ul.ie\u003e\nCc: Bob Picco \u003cbob.picco@hp.com\u003e\nCc: Jack Steiner \u003csteiner@sgi.com\u003e\nCc: Yasunori Goto \u003cy-goto@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": "12783b002db1f02c29353c8f698a85514420b9f4",
      "tree": "d0cec6913308fb34d539192dd0928cd0d7aae714",
      "parents": [
        "ad8f5797302ed389476debcc51b4630f387618b9"
      ],
      "author": {
        "name": "Mike Kravetz",
        "email": "kravetz@us.ibm.com",
        "time": "Sat May 20 15:00:05 2006 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@g5.osdl.org",
        "time": "Sun May 21 12:59:17 2006 -0700"
      },
      "message": "[PATCH] SPARSEMEM incorrectly calculates section number\n\nA bad calculation/loop in __section_nr() could result in incorrect section\ninformation being put into sysfs memory entries.  This primarily impacts\nmemory add operations as the sysfs information is used while onlining new\nmemory.\n\nFix suggested by Dave Hansen.\n\nNote that the bug may not be obvious from the patch.  It actually occurs in\nthe function\u0027s return statement:\n\n\treturn (root_nr * SECTIONS_PER_ROOT) + (ms - root);\n\nIn the existing code, root_nr has already been multiplied by\nSECTIONS_PER_ROOT.\n\nSigned-off-by: Mike Kravetz \u003ckravetz@us.ibm.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": "39d24e64263cd3211705d3b61ea4171c65030921",
      "tree": "b527b1395b070180b7f930c0a89530f11bce7b3c",
      "parents": [
        "48564e628bd7662d7a0b3ac81c41cd0e4cc36dae"
      ],
      "author": {
        "name": "Mike Kravetz",
        "email": "kravetz@us.ibm.com",
        "time": "Mon May 15 09:44:13 2006 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@g5.osdl.org",
        "time": "Mon May 15 11:20:56 2006 -0700"
      },
      "message": "[PATCH] add slab_is_available() routine for boot code\n\nslab_is_available() indicates slab based allocators are available for use.\nSPARSEMEM code needs to know this as it can be called at various times\nduring the boot process.\n\nSigned-off-by: Mike Kravetz \u003ckravetz@us.ibm.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n"
    },
    {
      "commit": "46a66eecdf7bc12562ecb492297447ed0e1ecf59",
      "tree": "b758b51763c2365130a2a58547fa0bc30d71cdc8",
      "parents": [
        "2c43630fb0ff3f01c29367248ffa4a851e2c9b34"
      ],
      "author": {
        "name": "Mike Kravetz",
        "email": "mjkravetz@verizon.net",
        "time": "Mon May 01 12:16:09 2006 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@g5.osdl.org",
        "time": "Mon May 01 18:17:46 2006 -0700"
      },
      "message": "[PATCH] sparsemem interaction with memory add bug fixes\n\nThis patch fixes two bugs with the way sparsemem interacts with memory add.\nThey are:\n\n- memory leak if memmap for section already exists\n\n- calling alloc_bootmem_node() after boot\n\nThese bugs were discovered and a first cut at the fixes were provided by\nArnd Bergmann \u003carnd@arndb.de\u003e and Joel Schopp \u003cjschopp@us.ibm.com\u003e.\n\nSigned-off-by: Mike Kravetz \u003ckravetz@us.ibm.com\u003e\nSigned-off-by: Joel Schopp \u003cjschopp@austin.ibm.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n"
    },
    {
      "commit": "22fc6eccbf4ce4eb6265e6ada7b50a7b9cc57d05",
      "tree": "3887dc6f1eeb658d773be037971b98d6f5fb3dd7",
      "parents": [
        "6d524aed1f50b2b1d5b4ad5a4e2fe3f38106d0a6"
      ],
      "author": {
        "name": "Ravikiran G Thirumalai",
        "email": "kiran@scalex86.org",
        "time": "Sun Jan 08 01:01:27 2006 -0800"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@g5.osdl.org",
        "time": "Sun Jan 08 20:13:38 2006 -0800"
      },
      "message": "[PATCH] Change maxaligned_in_smp alignemnt macros to internodealigned_in_smp macros\n\n____cacheline_maxaligned_in_smp is currently used to align critical structures\nand avoid false sharing.  It uses per-arch L1_CACHE_SHIFT_MAX and people find\nL1_CACHE_SHIFT_MAX useless.\n\nHowever, we have been using ____cacheline_maxaligned_in_smp to align\nstructures on the internode cacheline size.  As per Andi\u0027s suggestion,\nfollowing patch kills ____cacheline_maxaligned_in_smp and introduces\nINTERNODE_CACHE_SHIFT, which defaults to L1_CACHE_SHIFT for all arches.\nArches needing L3/Internode cacheline alignment can define\nINTERNODE_CACHE_SHIFT in the arch asm/cache.h.  Patch replaces\n____cacheline_maxaligned_in_smp with ____cacheline_internodealigned_in_smp\n\nWith this patch, L1_CACHE_SHIFT_MAX can be killed\n\nSigned-off-by: Ravikiran Thirumalai \u003ckiran@scalex86.org\u003e\nSigned-off-by: Shai Fultheim \u003cshai@scalex86.org\u003e\nSigned-off-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": "0b0acbec1bed75ec1e1daa7f7006323a2a2b2844",
      "tree": "e0d54fbaa6b8b0955ed881af8956b4085039b2d1",
      "parents": [
        "3947be1969a9ce455ec30f60ef51efb10e4323d1"
      ],
      "author": {
        "name": "Dave Hansen",
        "email": "haveblue@us.ibm.com",
        "time": "Sat Oct 29 18:16:55 2005 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@g5.osdl.org",
        "time": "Sat Oct 29 21:40:44 2005 -0700"
      },
      "message": "[PATCH] memory hotplug: move section_mem_map alloc to sparse.c\n\nThis basically keeps up from having to extern __kmalloc_section_memmap().\n\nThe vaddr_in_vmalloc_area() helper could go in a vmalloc header, but that\nheader gets hard to work with, because it needs some arch-specific macros.\nJust stick it in here for now, instead of creating another header.\n\nSigned-off-by: Dave Hansen \u003chaveblue@us.ibm.com\u003e\nSigned-off-by: Lion Vollnhals \u003cwebmaster@schiggl.de\u003e\nSigned-off-by: Jiri Slaby \u003cxslaby@fi.muni.cz\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": "4ca644d970bf2542623228a4624af356d20ca267",
      "tree": "1040782e8799d5531a5ee1d5f1143e26e8781e9d",
      "parents": [
        "ed8ece2ec8d3c2031b1a1a0737568bb0d49454e0"
      ],
      "author": {
        "name": "Dave Hansen",
        "email": "haveblue@us.ibm.com",
        "time": "Sat Oct 29 18:16:51 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: __section_nr helper\n\nA little helper that we use in the hotplug code.\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": "28ae55c98e4d16eac9a05a8a259d7763ef3aeb18",
      "tree": "0ac0a08d88a692b9b9934344b5e439058d71772a",
      "parents": [
        "3e347261a80b57df792ab9464b5f0ed59add53a8"
      ],
      "author": {
        "name": "Dave Hansen",
        "email": "haveblue@us.ibm.com",
        "time": "Sat Sep 03 15:54:29 2005 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@evo.osdl.org",
        "time": "Mon Sep 05 00:05:38 2005 -0700"
      },
      "message": "[PATCH] sparsemem extreme: hotplug preparation\n\nThis splits up sparse_index_alloc() into two pieces.  This is needed\nbecause we\u0027ll allocate the memory for the second level in a different place\nfrom where we actually consume it to keep the allocation from happening\nunderneath a lock\n\nSigned-off-by: Dave Hansen \u003chaveblue@us.ibm.com\u003e\nSigned-off-by: Bob Picco \u003cbob.picco@hp.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": "3e347261a80b57df792ab9464b5f0ed59add53a8",
      "tree": "047b35e0f9ec82b3beeff882a9af6292a500097c",
      "parents": [
        "802f192e4a600f7ef84ca25c8b818c8830acef5a"
      ],
      "author": {
        "name": "Bob Picco",
        "email": "bob.picco@hp.com",
        "time": "Sat Sep 03 15:54:28 2005 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@evo.osdl.org",
        "time": "Mon Sep 05 00:05:38 2005 -0700"
      },
      "message": "[PATCH] sparsemem extreme implementation\n\nWith cleanups from Dave Hansen \u003chaveblue@us.ibm.com\u003e\n\nSPARSEMEM_EXTREME makes mem_section a one dimensional array of pointers to\nmem_sections.  This two level layout scheme is able to achieve smaller\nmemory requirements for SPARSEMEM with the tradeoff of an additional shift\nand load when fetching the memory section.  The current SPARSEMEM\nimplementation is a one dimensional array of mem_sections which is the\ndefault SPARSEMEM configuration.  The patch attempts isolates the\nimplementation details of the physical layout of the sparsemem section\narray.\n\nSPARSEMEM_EXTREME requires bootmem to be functioning at the time of\nmemory_present() calls.  This is not always feasible, so architectures\nwhich do not need it may allocate everything statically by using\nSPARSEMEM_STATIC.\n\nSigned-off-by: Andy Whitcroft \u003capw@shadowen.org\u003e\nSigned-off-by: Bob Picco \u003cbob.picco@hp.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": "802f192e4a600f7ef84ca25c8b818c8830acef5a",
      "tree": "51e9a6ed164e6a2d8741af510c3954ad79bf19af",
      "parents": [
        "0216f86dafb389c0ad97529fd45e64e883298cfd"
      ],
      "author": {
        "name": "Bob Picco",
        "email": "bob.picco@hp.com",
        "time": "Sat Sep 03 15:54:26 2005 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@evo.osdl.org",
        "time": "Mon Sep 05 00:05:38 2005 -0700"
      },
      "message": "[PATCH] SPARSEMEM EXTREME\n\nA new option for SPARSEMEM is ARCH_SPARSEMEM_EXTREME.  Architecture\nplatforms with a very sparse physical address space would likely want to\nselect this option.  For those architecture platforms that don\u0027t select the\noption, the code generated is equivalent to SPARSEMEM currently in -mm.\nI\u0027ll be posting a patch on ia64 ml which uses this new SPARSEMEM feature.\n\nARCH_SPARSEMEM_EXTREME makes mem_section a one dimensional array of\npointers to mem_sections.  This two level layout scheme is able to achieve\nsmaller memory requirements for SPARSEMEM with the tradeoff of an\nadditional shift and load when fetching the memory section.  The current\nSPARSEMEM -mm implementation is a one dimensional array of mem_sections\nwhich is the default SPARSEMEM configuration.  The patch attempts isolates\nthe implementation details of the physical layout of the sparsemem section\narray.\n\nARCH_SPARSEMEM_EXTREME depends on 64BIT and is by default boolean false.\n\nI\u0027ve boot tested under aim load ia64 configured for ARCH_SPARSEMEM_EXTREME.\n I\u0027ve also boot tested a 4 way Opteron machine with !ARCH_SPARSEMEM_EXTREME\nand tested with aim.\n\nSigned-off-by: Andy Whitcroft \u003capw@shadowen.org\u003e\nSigned-off-by: Bob Picco \u003cbob.picco@hp.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": "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": "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"
    }
  ]
}