)]}' { "log": [ { "commit": "2f569afd9ced9ebec9a6eb3dbf6f83429be0a7b4", "tree": "23a31763887d9505e62e9d7cc8ec2fa4b86bd380", "parents": [ "13214adf738abc92b0a00c0763fd3be79eebaa7c" ], "author": { "name": "Martin Schwidefsky", "email": "schwidefsky@de.ibm.com", "time": "Fri Feb 08 04:22:04 2008 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Fri Feb 08 09:22:42 2008 -0800" }, "message": "CONFIG_HIGHPTE vs. sub-page page tables.\n\nBackground: I\u0027ve implemented 1K/2K page tables for s390. These sub-page\npage tables are required to properly support the s390 virtualization\ninstruction with KVM. The SIE instruction requires that the page tables\nhave 256 page table entries (pte) followed by 256 page status table entries\n(pgste). The pgstes are only required if the process is using the SIE\ninstruction. The pgstes are updated by the hardware and by the hypervisor\nfor a number of reasons, one of them is dirty and reference bit tracking.\nTo avoid wasting memory the standard pte table allocation should return\n1K/2K (31/64 bit) and 2K/4K if the process is using SIE.\n\nProblem: Page size on s390 is 4K, page table size is 1K or 2K. That means\nthe s390 version for pte_alloc_one cannot return a pointer to a struct\npage. Trouble is that with the CONFIG_HIGHPTE feature on x86 pte_alloc_one\ncannot return a pointer to a pte either, since that would require more than\n32 bit for the return value of pte_alloc_one (and the pte * would not be\naccessible since its not kmapped).\n\nSolution: The only solution I found to this dilemma is a new typedef: a\npgtable_t. For s390 pgtable_t will be a (pte *) - to be introduced with a\nlater patch. For everybody else it will be a (struct page *). The\nadditional problem with the initialization of the ptl lock and the\nNR_PAGETABLE accounting is solved with a constructor pgtable_page_ctor and\na destructor pgtable_page_dtor. The page table allocation and free\nfunctions need to call these two whenever a page table page is allocated or\nfreed. pmd_populate will get a pgtable_t instead of a struct page pointer.\n To get the pgtable_t back from a pmd entry that has been installed with\npmd_populate a new function pmd_pgtable is added. It replaces the pmd_page\ncall in free_pte_range and apply_to_pte_range.\n\nSigned-off-by: Martin Schwidefsky \u003cschwidefsky@de.ibm.com\u003e\nCc: \u003clinux-arch@vger.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": "5e5419734c8719cbc01af959ad9c0844002c0df5", "tree": "a075dca3f719946689efa0245464855cbf2a20ce", "parents": [ "9f8f2172537de7af0b0fbd33502d18d52b1339bc" ], "author": { "name": "Benjamin Herrenschmidt", "email": "benh@kernel.crashing.org", "time": "Mon Feb 04 22:29:14 2008 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Feb 05 09:44:18 2008 -0800" }, "message": "add mm argument to pte/pmd/pud/pgd_free\n\n(with Martin Schwidefsky \u003cschwidefsky@de.ibm.com\u003e)\n\nThe pgd/pud/pmd/pte page table allocation functions get a mm_struct pointer as\nfirst argument. The free functions do not get the mm_struct argument. This\nis 1) asymmetrical and 2) to do mm related page table allocations the mm\nargument is needed on the free function as well.\n\n[kamalesh@linux.vnet.ibm.com: i386 fix]\n[akpm@linux-foundation.org: coding-syle fixes]\nSigned-off-by: Benjamin Herrenschmidt \u003cbenh@kernel.crashing.org\u003e\nSigned-off-by: Martin Schwidefsky \u003cschwidefsky@de.ibm.com\u003e\nCc: \u003clinux-arch@vger.kernel.org\u003e\nSigned-off-by: Kamalesh Babulal \u003ckamalesh@linux.vnet.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": "2bd62a40f63bd628c43a2f3637b252d0967659b0", "tree": "73b5dbda741421812f487ff0a9b753109fb105b4", "parents": [ "cdc7dbdfe6edac177acb32e4ca56b525d0743fe7" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Thu May 10 22:42:53 2007 -0700" }, "committer": { "name": "Tony Luck", "email": "tony.luck@intel.com", "time": "Fri May 11 09:40:00 2007 -0700" }, "message": "[IA64] Quicklist support for IA64\n\nIA64 is the origin of the quicklist implementation. So cut out the pieces\nthat are now in core code and modify the functions called.\n\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Tony Luck \u003ctony.luck@intel.com\u003e\n" }, { "commit": "71120061f271f00d8280659bf12e065ca6533d4d", "tree": "1b144732a410c0bbefea3e9d264f815e789f5ed5", "parents": [ "d00195ebc18049f067c8e389c186aa6f5d2b659f" ], "author": { "name": "Kirill Korotaev", "email": "dev@openvz.org", "time": "Mon Feb 05 16:20:00 2007 -0800" }, "committer": { "name": "Tony Luck", "email": "tony.luck@intel.com", "time": "Mon Feb 05 16:47:02 2007 -0800" }, "message": "[IA64] virt_to_page() can be called with NULL arg\n\nIt does not return NULL when arg is NULL.\n\nSigned-off-by: Alexey Kuznetsov \u003ckuznet@ms2.inr.ac.ru\u003e\nSigned-off-by: Kirill Korotaev \u003cdev@openvz.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Tony Luck \u003ctony.luck@intel.com\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": "62c4f0a2d5a188f73a94f2cb8ea0dba3e7cf0a7f", "tree": "e85ca2d0dd43f90dccf758338764c3caa55f333f", "parents": [ "089f26d5e31b7bf42a9a8fefec08b30cd27f4b0e" ], "author": { "name": "David Woodhouse", "email": "dwmw2@infradead.org", "time": "Wed Apr 26 12:56:16 2006 +0100" }, "committer": { "name": "David Woodhouse", "email": "dwmw2@infradead.org", "time": "Wed Apr 26 12:56:16 2006 +0100" }, "message": "Don\u0027t include linux/config.h from anywhere else in include/\n\nSigned-off-by: David Woodhouse \u003cdwmw2@infradead.org\u003e\n" }, { "commit": "837cd0bdf54dd954cd6aa43d250f75ab5db79617", "tree": "ef28b91f1ac8c1c9f4244da9be1f994306ef4070", "parents": [ "d12eb7e11cf30c30f639b2093735af2ac177830b" ], "author": { "name": "Robin Holt", "email": "holt@sgi.com", "time": "Fri Nov 11 09:35:43 2005 -0600" }, "committer": { "name": "Tony Luck", "email": "tony.luck@intel.com", "time": "Fri Nov 11 09:37:29 2005 -0800" }, "message": "[IA64] 4-level page tables\n\nThis patch introduces 4-level page tables to ia64. I have run\nsome benchmarks and found nothing interesting. Performance has\nconsistently fallen within the noise range.\n\nIt also introduces a config option (setting the default to 3\nlevels). The config option prevents having 4 level page\ntables with 64k base page size.\n\nSigned-off-by: Robin Holt \u003cholt@sgi.com\u003e\nSigned-off-by: Tony Luck \u003ctony.luck@intel.com\u003e\n" }, { "commit": "2d29306b231a1a0e7a70166c10e4c0f917b21334", "tree": "ebbf8240386b01a78a7c2fc7de307184580e8208", "parents": [ "605036cf8443b9172b24954dc1fd218e2049f91b" ], "author": { "name": "Martin Hicks", "email": "mort@sgi.com", "time": "Tue Apr 26 09:04:31 2005 -0700" }, "committer": { "name": "Tony Luck", "email": "aegl@agluck-lia64.sc.intel.com", "time": "Tue Apr 26 09:04:31 2005 -0700" }, "message": "[IA64] re-enable preempt before page allocation for pgtable quicklist\n\nThis is a fix to the pgtable_quicklist code. There is a GFP_KERNEL\nallocation in pgtable_quicklist_alloc(), which spews the usual warnings\nif the kernel is under heavy VM pressure and the reclaim code is\ninvoked. re-enable preempt before we allocate the new page.\n\nThis patch is against 2.6.12-rc2-mm2\n\nSigned-off-by: Martin Hicks \u003cmort@sgi.com\u003e\nSigned-off-by: Tony Luck \u003ctony.luckintel.com\u003e\n" }, { "commit": "c411cb56586915350e4cdb6f228e9da2adba3285", "tree": "61cf8e8eb97592d2e3d8e7524dfabde731d97d12", "parents": [ "5f6602a101993592b437b801c401443bec65d0cf" ], "author": { "name": "Tony Luck", "email": "tony.luck@intel.com", "time": "Mon Apr 25 13:16:16 2005 -0700" }, "committer": { "name": "Tony Luck", "email": "tony.luck@intel.com", "time": "Mon Apr 25 13:16:16 2005 -0700" }, "message": "[IA64] fix: warning: `ql_size\u0027 might be used uninitialized\n\nOops. Should have caught this before I checked it in.\n\nSigned-off-by: Tony Luck \u003ctony.luck@intel.com\u003e\n" }, { "commit": "fde740e4dd4a05ca8957490d468fa9b2770f5bd6", "tree": "04bc0221bc6c59379a17f3631fc4bd3c886e1d61", "parents": [ "ff3eb55ed97db3f12964beeffe3d34602d295367" ], "author": { "name": "Robin Holt", "email": "holt@sgi.com", "time": "Mon Apr 25 13:13:16 2005 -0700" }, "committer": { "name": "Tony Luck", "email": "tony.luck@intel.com", "time": "Mon Apr 25 13:13:16 2005 -0700" }, "message": "[IA64] Percpu quicklist for combined allocator for pgd/pmd/pte.\n\nThis patch introduces using the quicklists for pgd, pmd, and pte levels\nby combining the alloc and free functions into a common set of routines.\nThis greatly simplifies the reading of this header file.\n\nThis patch is simple but necessary for large numa configurations.\nIt simply ensures that only pages from the local node are added to a\ncpus quicklist. This prevents the trapping of pages on a remote nodes\nquicklist by starting a process, touching a large number of pages to\nfill pmd and pte entries, migrating to another node, and then unmapping\nor exiting. With those conditions, the pages get trapped and if the\nmachine has more than 100 nodes of the same size, the calculation of\nthe pgtable high water mark will be larger than any single node so page\ntable cache flushing will never occur.\n\nI ran lmbench lat_proc fork and lat_proc exec on a zx1 with and without\nthis patch and did not notice any change.\n\nOn an sn2 machine, there was a slight improvement which is possibly\ndue to pages from other nodes trapped on the test node before starting\nthe run. I did not investigate further.\n\nThis patch shrinks the quicklist based upon free memory on the node\ninstead of the high/low water marks. I have written it to enable\npreemption periodically and recalculate the amount to shrink every time\nwe have freed enough pages that the quicklist size should have grown.\nI rescan the nodes zones each pass because other processess may be\ndraining node memory at the same time as we are adding.\n\nSigned-off-by: Robin Holt \u003cholt@sgi.com\u003e\nSigned-off-by: Tony Luck \u003ctony.luck@intel.com\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" } ] }