)]}' { "log": [ { "commit": "2b0460b534f383eca744eb8fff66ec9f57e702b9", "tree": "1bf4b9d0ebccd3083da4de7e4273b8d29f5d5c5d", "parents": [ "d91f5bb69adde86173071cf7fffbdf705ae8c6e7", "b02fcae007ac64012806bc57054e7fee6e2ffe5e" ], "author": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Oct 16 16:56:35 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Oct 16 16:56:35 2007 -0700" }, "message": "Merge master.kernel.org:/pub/scm/linux/kernel/git/bart/ide-2.6\n\n* master.kernel.org:/pub/scm/linux/kernel/git/bart/ide-2.6: (33 commits)\n amd74xx: remove /proc/ide/amd74xx\n amd74xx/via82cxxx: don\u0027t initialize drive-\u003edn\n sis5513: remove /proc/ide/sis\n ide: remove CONFIG_IDEDMA_ONLYDISK\n ide: add \"hdx\u003dnodma\" kernel parameter\n ide: remove hwif-\u003eautodma and drive-\u003eautodma\n ide: remove \"idex\u003ddma\" kernel parameter\n ide: remove CONFIG_BLK_DEV_IDEDMA_FORCED\n ide: use PCI_VDEVICE() macro\n sis5513: clear prefetch and postwrite for ATAPI devices\n it8213/piix/slc90e66: \"de-couple\" PIO and UDMA modes\n ide: unexport noautodma\n ide: unexport ide_tune_dma\n ide: remove -\u003eide_dma_check (take 2)\n ide-pmac: add PIO autotune fallback to -\u003eide_dma_check\n ide-cris: add PIO autotune fallback to -\u003eide_dma_check\n sl82c105: add PIO autotune fallback to -\u003eide_dma_check\n cs5530/sc1200: add PIO autotune fallback to -\u003eide_dma_check\n ide: remove ide_use_fast_pio()\n ide: remove drive-\u003einit_speed zeroing\n ...\n" }, { "commit": "b883a688ce4ba60ba4295ef9bf9854647f4d106e", "tree": "ec11ae4b89d7a95e4f6e4d5be7b0ef1b87d54a2d", "parents": [ "1316ff5d52a8caf76da3c5fb351699f9fcc07b4a", "087feb980443aadc7c62f6c26d3867543b470d8c" ], "author": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Oct 16 16:53:20 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Oct 16 16:53:20 2007 -0700" }, "message": "Merge branch \u0027for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/selinux-2.6\n\n* \u0027for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/selinux-2.6:\n SELinux: kills warnings in Improve SELinux performance when AVC misses\n SELinux: improve performance when AVC misses.\n SELinux: policy selectable handling of unknown classes and perms\n SELinux: Improve read/write performance\n SELinux: tune avtab to reduce memory usage\n" }, { "commit": "788e7dd4c22e6f41b3a118fd8c291f831f6fddbb", "tree": "cbe2d2a360aaf7dc243bef432e1c50507ae6db7b", "parents": [ "3232c110b56bd01c5f0fdfd16b4d695f2e05b0a9" ], "author": { "name": "Yuichi Nakamura", "email": "ynakam@hitachisoft.jp", "time": "Fri Sep 14 09:27:07 2007 +0900" }, "committer": { "name": "James Morris", "email": "jmorris@namei.org", "time": "Wed Oct 17 08:59:31 2007 +1000" }, "message": "SELinux: Improve read/write performance\n\nIt reduces the selinux overhead on read/write by only revalidating\npermissions in selinux_file_permission if the task or inode labels have\nchanged or the policy has changed since the open-time check. A new LSM\nhook, security_dentry_open, is added to capture the necessary state at open\ntime to allow this optimization.\n\n(see http://marc.info/?l\u003dselinux\u0026m\u003d118972995207740\u0026w\u003d2)\n\nSigned-off-by: Yuichi Nakamura\u003cynakam@hitachisoft.jp\u003e\nAcked-by: Stephen Smalley \u003csds@tycho.nsa.gov\u003e\nSigned-off-by: James Morris \u003cjmorris@namei.org\u003e\n" }, { "commit": "a64408b96b5f67c2778958a230b5cfa3408a4a81", "tree": "5dbd798b626f3693fa9950fa2a3b37e489aa6bbd", "parents": [ "02ff8f8ee151e880414b99a11f67cae0cecd4977" ], "author": { "name": "Stefan Richter", "email": "stefanr@s5r6.in-berlin.de", "time": "Sat Sep 29 10:41:58 2007 +0200" }, "committer": { "name": "Stefan Richter", "email": "stefanr@s5r6.in-berlin.de", "time": "Wed Oct 17 00:00:08 2007 +0200" }, "message": "firewire: adopt read cycle timer ABI from raw1394\n\nThis duplicates the read cycle timer feature of raw1394 (added in Linux\n2.6.21) in firewire-core\u0027s userspace ABI. The argument to the ioctl is\nreordered though to ensure 32/64 bit compatibility.\n\nSigned-off-by: Stefan Richter \u003cstefanr@s5r6.in-berlin.de\u003e\nSigned-off-by: Kristian Høgsberg \u003ckrh@redhat.com\u003e\n" }, { "commit": "c223701cf6c706f42840631c1ca919a18e6e2800", "tree": "0ae93a4a36e874d5e1378e5e2d032a81e71350f7", "parents": [ "9ff6f72f432364991d68e99cae72cb141c166e70" ], "author": { "name": "Bartlomiej Zolnierkiewicz", "email": "bzolnier@gmail.com", "time": "Tue Oct 16 22:29:58 2007 +0200" }, "committer": { "name": "Bartlomiej Zolnierkiewicz", "email": "bzolnier@gmail.com", "time": "Tue Oct 16 22:29:58 2007 +0200" }, "message": "ide: add \"hdx\u003dnodma\" kernel parameter\n\n* Add \"hdx\u003dnodma\" option allowing user to disallow DMA for a given device.\n\n* Obsolete \"ide\u003dnodma\" option.\n\nAcked-by: Sergei Shtylyov \u003csshtylyov@ru.mvista.com\u003e\nSigned-off-by: Bartlomiej Zolnierkiewicz \u003cbzolnier@gmail.com\u003e\n" }, { "commit": "9ff6f72f432364991d68e99cae72cb141c166e70", "tree": "e37e5dc6d1b2387f7cbc2909d5cb534d4a395a79", "parents": [ "1b5169405e50b98b2bd1e4f86c7706ea24a59193" ], "author": { "name": "Bartlomiej Zolnierkiewicz", "email": "bzolnier@gmail.com", "time": "Tue Oct 16 22:29:58 2007 +0200" }, "committer": { "name": "Bartlomiej Zolnierkiewicz", "email": "bzolnier@gmail.com", "time": "Tue Oct 16 22:29:58 2007 +0200" }, "message": "ide: remove hwif-\u003eautodma and drive-\u003eautodma\n\n* hpt34x.c: disable DMA masks for HPT345\n (hwif-\u003eautodma is zero so DMA won\u0027t be enabled anyway).\n\n* trm290.c: disable IDE_HFLAG_TRUST_BIOS_FOR_DMA flag\n (hwif-\u003eautodma is zero so DMA won\u0027t be enabled anyway).\n\n* Check noautodma global variable instead of drive-\u003eautodma in ide_tune_dma().\n\n This fixes handling of \"ide\u003dnodma\" kernel parameter for icside, ide-cris,\n au1xxx-ide, pmac, it821x, jmicron, sgiioc4 and siimage host drivers.\n\n* Remove hwif-\u003eautodma (it was not checked by IDE core code anyway) and\n drive-\u003eautodma (was set by all host drivers - except HPT345/TRM290 special\n cases - unless \"ide\u003dnodma\" was used).\n\nWhile at it:\n- remove needless printk() from icside.c\n- remove stale FIXME/comment from ide-probe.c\n- don\u0027t force DMA off if PCI bus-mastering had to be enabled in setup-pci.c\n (this setting was always later over-ridden by host drivers anyway)\n\nSigned-off-by: Bartlomiej Zolnierkiewicz \u003cbzolnier@gmail.com\u003e\n" }, { "commit": "0ae2e178652753ae1797d407755a3505f7c1d2a7", "tree": "fa725edcfb4b9752ebf2aa49a3e42e158537d4ed", "parents": [ "b8b739d3361c16773a30fe5c0360336bbc19f435" ], "author": { "name": "Bartlomiej Zolnierkiewicz", "email": "bzolnier@gmail.com", "time": "Tue Oct 16 22:29:55 2007 +0200" }, "committer": { "name": "Bartlomiej Zolnierkiewicz", "email": "bzolnier@gmail.com", "time": "Tue Oct 16 22:29:55 2007 +0200" }, "message": "ide: remove -\u003eide_dma_check (take 2)\n\n* Add IDE_HFLAG_TRUST_BIOS_FOR_DMA host flag for host drivers that depend\n on BIOS for programming device/controller for DMA. Set it in cy82c693,\n generic, ns87415, opti621 and trm290 host drivers.\n\n* Add IDE_HFLAG_VDMA host flag for host drivers using VDMA. Set it in cs5520\n host driver.\n\n* Teach ide_tune_dma() about IDE_HFLAG_TRUST_BIOS_FOR_DMA flag.\n\n* Add generic ide_dma_check() helper and remove all open coded -\u003eide_dma_check\n implementations. Fix all places checking for presence of -\u003eide_dma_check\n hook to check for -\u003eide_dma_on instead.\n\n* Remove no longer needed code from config_drive_for_dma().\n\n* Make ide_tune_dma() static.\n\nv2:\n* Fix config_drive_for_dma() return values.\n\n* Fix ide-dma.c build for CONFIG_BLK_DEV_IDEDMA_PCI\u003dn by adding\n dummy config_drive_for_dma() inline.\n\n* Fix IDE_HFLAG_TRUST_BIOS_FOR_DMA handling in ide_dma_check().\n\n* Fix init_hwif_it8213() comment.\n\nThere should be no functionality changes caused by this patch.\n\nCc: Sergei Shtylyov \u003csshtylyov@ru.mvista.com\u003e\nSigned-off-by: Bartlomiej Zolnierkiewicz \u003cbzolnier@gmail.com\u003e\n" }, { "commit": "65c9cd23cab821c165a70ddd0447eb6362ebbb0c", "tree": "86f7c8d025cd774ed043e0cfeb8a681a38ab0c6d", "parents": [ "d3b90baf0924c13045c56c3d0a766f9374fe7a9e" ], "author": { "name": "Bartlomiej Zolnierkiewicz", "email": "bzolnier@gmail.com", "time": "Tue Oct 16 22:29:54 2007 +0200" }, "committer": { "name": "Bartlomiej Zolnierkiewicz", "email": "bzolnier@gmail.com", "time": "Tue Oct 16 22:29:54 2007 +0200" }, "message": "ide: remove ide_use_fast_pio()\n\nRemove ide_use_fast_pio() and just re-tune PIO unconditionally if DMA tuning\nhas failed in -\u003eide_dma_check. All host drivers using ide_use_fast_pio() set\ndrive-\u003eautotune so PIO is always tuned anyway and in some cases we _really_\nneed to re-tune PIO because PIO and DMA timings are shared.\n\nAcked-by: Sergei Shtylyov \u003csshtylyov@ru.mvista.com\u003e\nSigned-off-by: Bartlomiej Zolnierkiewicz \u003cbzolnier@gmail.com\u003e\n" }, { "commit": "821f3eff7cdb9d6c7076effabd46c96c322daed1", "tree": "60f13155196fd6c84424c8aebc133ca4a5f56749", "parents": [ "ebc283118ee448dcb6e6cae74a8a43f17a1ccc3f", "f77bf01425b11947eeb3b5b54685212c302741b8" ], "author": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Oct 16 11:23:06 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Oct 16 11:23:06 2007 -0700" }, "message": "Merge git://git.kernel.org/pub/scm/linux/kernel/git/sam/kbuild\n\n* git://git.kernel.org/pub/scm/linux/kernel/git/sam/kbuild: (40 commits)\n kbuild: introduce ccflags-y, asflags-y and ldflags-y\n kbuild: enable \u0027make CPPFLAGS\u003d...\u0027 to add additional options to CPP\n kbuild: enable use of AFLAGS and CFLAGS on commandline\n kbuild: enable \u0027make AFLAGS\u003d...\u0027 to add additional options to AS\n kbuild: fix AFLAGS use in h8300 and m68knommu\n kbuild: check for wrong use of CFLAGS\n kbuild: enable \u0027make CFLAGS\u003d...\u0027 to add additional options to CC\n kbuild: fix up CFLAGS usage\n kbuild: make modpost detect unterminated device id lists\n kbuild: call export_report from the Makefile\n kbuild: move Kai Germaschewski to CREDITS\n kconfig/menuconfig: distinguish between selected-by-another options and comments\n kconfig: tristate choices with mixed tristate and boolean values\n include/linux/Kbuild: remove duplicate entries\n kbuild: kill backward compatibility checks\n kbuild: kill EXTRA_ARFLAGS\n kbuild: fix documentation in makefiles.txt\n kbuild: call make once for all targets when O\u003d.. is used\n kbuild: pass -g to assembler under CONFIG_DEBUG_INFO\n kbuild: update _shipped files for kconfig syntax cleanup\n ...\n\nFix up conflicts in arch/um/sys-{x86_64,i386}/Makefile manually.\n" }, { "commit": "fc8a327db6c46de783b1a4276d846841b9abc24c", "tree": "bee512c142cccea93511debd98ef954581693727", "parents": [ "92d15c2ccbb3e31a3fc71ad28fdb55e1319383c0", "24837e6f249a2c83667552e6871c1543b4a6b934" ], "author": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Oct 16 10:13:38 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Oct 16 10:13:38 2007 -0700" }, "message": "Merge branch \u0027linus\u0027 of master.kernel.org:/pub/scm/linux/kernel/git/perex/alsa\n\n* \u0027linus\u0027 of master.kernel.org:/pub/scm/linux/kernel/git/perex/alsa: (264 commits)\n [ALSA] version 1.0.15\n [ALSA] Fix thinko in cs4231 mce down check\n [ALSA] sun-cs4231: improved waiting after MCE down\n [ALSA] sun-cs4231: use cs4231-regs.h\n [ALSA] This simplifies and fixes waiting loops of the mce_down()\n [ALSA] This patch adds support for a wavetable chip on\n [ALSA] This patch removes open_mutex from the ad1848-lib as\n [ALSA] fix bootup crash in snd_gus_interrupt()\n [ALSA] hda-codec - Fix SKU ID function for realtek codecs\n [ALSA] Support ASUS P701 eeepc [0x1043 0x82a1] support\n [ALSA] hda-codec - Add array terminator for dmic in STAC codec\n [ALSA] hdsp - Fix zero division\n [ALSA] usb-audio - Fix double comment\n [ALSA] hda-codec - Fix STAC922x volume knob control\n [ALSA] Changed Jaroslav Kysela\u0027s e-mail from perex@suse.cz to perex@perex.cz\n [ALSA] hda-codec - Fix for Fujitsu Lifebook C1410\n [ALSA] mpu-401: remove MPU401_INFO_UART_ONLY flag\n [ALSA] mpu-401: do not require an ACK byte for the ENTER_UART command\n [ALSA] via82xx - Add DXS quirk for Shuttle AK31v2\n [ALSA] hda-codec - Fix input_mux numbers for vaio stac92xx\n ...\n" }, { "commit": "92d15c2ccbb3e31a3fc71ad28fdb55e1319383c0", "tree": "8d83c0dc3c6b935d8367e331872f242b742f0a8a", "parents": [ "f20bf6125605acbbc7eb8c9420d7221c91aa83eb", "644bd2f048972d75eb1979b1fdca257d528ce687" ], "author": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Oct 16 10:09:16 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Oct 16 10:09:16 2007 -0700" }, "message": "Merge branch \u0027for-linus\u0027 of git://git.kernel.dk/data/git/linux-2.6-block\n\n* \u0027for-linus\u0027 of git://git.kernel.dk/data/git/linux-2.6-block: (63 commits)\n Fix memory leak in dm-crypt\n SPARC64: sg chaining support\n SPARC: sg chaining support\n PPC: sg chaining support\n PS3: sg chaining support\n IA64: sg chaining support\n x86-64: enable sg chaining\n x86-64: update pci-gart iommu to sg helpers\n x86-64: update nommu to sg helpers\n x86-64: update calgary iommu to sg helpers\n swiotlb: sg chaining support\n i386: enable sg chaining\n i386 dma_map_sg: convert to using sg helpers\n mmc: need to zero sglist on init\n Panic in blk_rq_map_sg() from CCISS driver\n remove sglist_len\n remove blk_queue_max_phys_segments in libata\n revert sg segment size ifdefs\n Fixup u14-34f ENABLE_SG_CHAINING\n qla1280: enable use_sg_chaining option\n ...\n" }, { "commit": "9a054fbac8f8441f48896b855a9e11c13e0c3dc8", "tree": "8c2dca0b0baf4c576e28cc9324e509c59c0b59b1", "parents": [ "61e0b28e5435ac3010746bcf24fe8a16425d0343" ], "author": { "name": "Geert Uytterhoeven", "email": "Geert.Uytterhoeven@sonycom.com", "time": "Tue Oct 16 01:29:51 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Oct 16 09:43:22 2007 -0700" }, "message": "fb: move and rename extern declaration for global_mode_option\n\nMove the extern declaration for global_mode_option to \u003clinux/fb.h\u003e and rename\nthe variable to fb_mode_option.\n\nSigned-off-by: Geert Uytterhoeven \u003cGeert.Uytterhoeven@sonycom.com\u003e\nCc: \"Antonino A. Daplas\" \u003cadaplas@pol.net\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "e400b6ec4ede4dc0aa8e5640425df5b29796fe0e", "tree": "8fbca730c850fd85fbf0f2d70daef7765ed4cb7f", "parents": [ "0058f479e52d0c0718c843cb34223bc1bfce36e1" ], "author": { "name": "Antonino A. Daplas", "email": "adaplas@gmail.com", "time": "Tue Oct 16 01:29:35 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Oct 16 09:43:20 2007 -0700" }, "message": "vt/vgacon: Check if screen resize request comes from userspace\n\nVarious console drivers are able to resize the screen via the con_resize()\nhook. This hook is also visible in userspace via the TIOCWINSZ, VT_RESIZE and\nVT_RESIZEX ioctl\u0027s. One particular utility, SVGATextMode, expects that\ncon_resize() of the VGA console will always return success even if the\nresulting screen is not compatible with the hardware. However, this\nparticular behavior of the VGA console, as reported in Kernel Bugzilla Bug\n7513, can cause undefined behavior if the user starts with a console size\nlarger than 80x25.\n\nTo work around this problem, add an extra parameter to con_resize(). This\nparameter is ignored by drivers except for vgacon. If this parameter is\nnon-zero, then the resize request came from a VT_RESIZE or VT_RESIZEX ioctl\nand vgacon will always return success. If this parameter is zero, vgacon will\nreturn -EINVAL if the requested size is not compatible with the hardware. The\nlatter is the more correct behavior.\n\nWith this change, SVGATextMode should still work correctly while in-kernel and\nstty resize calls can expect correct behavior from vgacon.\n\nSigned-off-by: Antonino Daplas \u003cadaplas@gmail.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "394d3af7ba9e67d630c1c6d2ac1d9c11b318b73e", "tree": "7057c8c671e7bc33753830928c82c9c5378cd496", "parents": [ "28ebe4f66beda8f142569d24fe3b168f8a08a6a6" ], "author": { "name": "Krzysztof Halasa", "email": "khc@pm.waw.pl", "time": "Tue Oct 16 01:29:34 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Oct 16 09:43:20 2007 -0700" }, "message": "Intel FB: more interlaced mode support\n\nIntel FB: allow odd- and even-field-first in interlaced modes, and\nproper sync to vertical retrace\n\nSigned-off-by: Krzysztof Halasa \u003ckhc@pm.waw.pl\u003e\nCc: \"Antonino A. Daplas\" \u003cadaplas@pol.net\u003e\nCc: \u003csylvain.meyer@worldonline.fr\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "779121e9f17525769c04a00475fd85600c8c04eb", "tree": "757aad067bed869bfdd2dc2eb2f652a7f4e5e071", "parents": [ "3c03ec209af1dd8223888630482f1b2353dc6284" ], "author": { "name": "Pavel Pisa", "email": "pisa@cmp.felk.cvut.cz", "time": "Tue Oct 16 01:29:21 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Oct 16 09:43:19 2007 -0700" }, "message": "fbdev: Support for byte-reversed framebuffer formats\n\nAllow generic frame-buffer code to correctly write texts and blit images for\n1, 2 and 4 bit per pixel frame-buffer organizations when pixels in bytes are\norganized to in opposite order than bytes in long type.\n\nOverhead should be reasonable. If option is not selected, than compiler\nshould eliminate completely all overhead.\n\nThe feature is disabled at compile time if CONFIG_FB_CFB_REV_PIXELS_IN_BYTE is\nnot set.\n\n[adaplas]\nConvert helper functions to macros if feature is not enabled.\n\nSigned-off-by: Pavel Pisa \u003cpisa@cmp.felk.cvut.cz\u003e\nSigned-off-by: Antonino Daplas \u003cadaplas@gmail.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "120c0b6d57257b2a3508d96bdaf54781935439f6", "tree": "ee2361306d4e0e98e1eae2d114876e2228bfcc36", "parents": [ "908633f3ec8b3e10ef23de28ae6a5b1770118cfd" ], "author": { "name": "Ralf Baechle", "email": "ralf@linux-mips.org", "time": "Tue Oct 16 01:29:04 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Oct 16 09:43:17 2007 -0700" }, "message": "vt: Fix warnings in selection.h\n\n\u003clinux/selection.h\u003e assumes that struct tty_struct has previously been\nincluded. If not, this pile of warnings will result:\n\n CC [M] drivers/video/console/newport_con.o\nIn file included from drivers/video/console/newport_con.c:18:\ninclude/linux/selection.h:16: warning: \u0027struct tty_struct\u0027 declared inside param\neter list\ninclude/linux/selection.h:16: warning: its scope is only this definition or decl\naration, which is probably not what you want\ninclude/linux/selection.h:17: warning: \u0027struct tty_struct\u0027 declared inside param\neter list\ninclude/linux/selection.h:20: warning: \u0027struct tty_struct\u0027 declared inside param\neter list\n\nFixed by adding a forward declaration of struct tty_struct.\n\nSigned-off-by: Ralf Baechle \u003cralf@linux-mips.org\u003e\nSigned-off-by: Antonino Daplas \u003cadaplas@gmail.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "eb78f9b3fa8532057d2a45acbe415b27ece6341b", "tree": "0ad087338d6b29887533a20e97770a56ea4308ef", "parents": [ "f22e521f2992031fdedb661f2a647cafd2e45fa1" ], "author": { "name": "Ben Dooks", "email": "ben-linux@fluff.org", "time": "Tue Oct 16 01:28:39 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Oct 16 09:43:14 2007 -0700" }, "message": "sm501fb: Ensure panel interface is not tristated when setup\n\nWhen we setup the panel interface whilst configuring the\nframebuffer, we should ensure the panel interface is not\nin tristate, in case the bootloader or previous setup has\nnot enabled it.\n\nSigned-off-by: Ben Dooks \u003cben-linux@fluff.org\u003e\nSigned-off-by: Antonino Daplas \u003cadaplas@gmail.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "cc54f46e39dff9891dd334ef158a238ff5a9ffd2", "tree": "0609e264847154806dc878ebb303e71ca4bd2302", "parents": [ "3d62a44f74bb7c026d1b782ebd5506376e55f2cd" ], "author": { "name": "Michal Januszewski", "email": "spock@gentoo.org", "time": "Tue Oct 16 01:28:25 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Oct 16 09:43:13 2007 -0700" }, "message": "uvesafb: add connector entries\n\nAdd connector idx and val constants for v86d and uvesafb.\n\nSigned-off-by: Michal Januszewski \u003cspock@gentoo.org\u003e\nSigned-off-by: Antonino Daplas \u003cadaplas@gmail.com\u003e\nCc: Evgeniy Polyakov \u003cjohnpol@2ka.mipt.ru\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "3d62a44f74bb7c026d1b782ebd5506376e55f2cd", "tree": "b8f419dc2c45dc1795a0b55fe8e96c512db78dca", "parents": [ "9953d236e94ce26639b0e05d2631d076889d08df" ], "author": { "name": "Michal Januszewski", "email": "spock@gentoo.org", "time": "Tue Oct 16 01:28:24 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Oct 16 09:43:13 2007 -0700" }, "message": "connector: change connector\u0027s max message size\n\nChange the maximum message size to 16k to allow transfers of VBE\ndata blocks from userspace.\n\nSigned-off-by: Michal Januszewski \u003cspock@gentoo.org\u003e\nSigned-off-by: Antonino Daplas \u003cadaplas@gmail.com\u003e\nCc: Evgeniy Polyakov \u003cjohnpol@2ka.mipt.ru\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "cce76f9b9696a59974be9ed43478c000c57e597a", "tree": "b7b6f64c1c175a569411c39f57d86f41e6b3e652", "parents": [ "e8a285b7b10029c3da7e9bbaa1659e7e08178912" ], "author": { "name": "Adrian Bunk", "email": "bunk@stusta.de", "time": "Tue Oct 16 01:27:52 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Oct 16 09:43:10 2007 -0700" }, "message": "fs/nfsd/export.c: make 3 functions static\n\nThis patch makes the following needlessly global functions static:\n- exp_get_by_name()\n- exp_parent()\n- exp_find()\n\nSigned-off-by: Adrian Bunk \u003cbunk@stusta.de\u003e\nCc: Neil Brown \u003cneilb@suse.de\u003e\nCc: \"J. Bruce Fields\" \u003cbfields@fieldses.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "4e3dfacaa0b8e469f412ae776f222102042d7e24", "tree": "0dbb44298dd5b16d172030234a155f26074008ef", "parents": [ "4d1ff582246de67b15e3cd2427a39875943ae895" ], "author": { "name": "Matthias Kaehlcke", "email": "matthias.kaehlcke@gmail.com", "time": "Tue Oct 16 01:27:50 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Oct 16 09:43:10 2007 -0700" }, "message": "use mutex instead of semaphore in isdn subsystem common functions\n\nThe ISDN subsystem common functions use a semaphore as mutex. Use the\nmutex API instead of the (binary) semaphore.\n\nSigned-off-by: Matthias Kaehlcke \u003cmatthias.kaehlcke@gmail.com\u003e\nAcked-by: Karsten Keil \u003ckkeil@suse.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "f438d914b220051d4cbc65cbc5d98e163c85c93b", "tree": "75e7fda155a8494595f6ae0539bbb64ef98230f6", "parents": [ "49dce689ad4ef0fd1f970ef762168e4bd46f69a3" ], "author": { "name": "Masami Hiramatsu", "email": "mhiramat@redhat.com", "time": "Tue Oct 16 01:27:49 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Oct 16 09:43:10 2007 -0700" }, "message": "kprobes: support kretprobe blacklist\n\nIntroduce architecture dependent kretprobe blacklists to prohibit users\nfrom inserting return probes on the function in which kprobes can be\ninserted but kretprobes can not.\n\nThis patch also removes \"__kprobes\" mark from \"__switch_to\" on x86_64 and\nregisters \"__switch_to\" to the blacklist on x86-64, because that mark is to\nprohibit user from inserting only kretprobe.\n\nSigned-off-by: Masami Hiramatsu \u003cmhiramat@redhat.com\u003e\nCc: Prasanna S Panchamukhi \u003cprasanna@in.ibm.com\u003e\nAcked-by: Ananth N Mavinakayanahalli \u003cananth@in.ibm.com\u003e\nCc: Anil S Keshavamurthy \u003canil.s.keshavamurthy@intel.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "49dce689ad4ef0fd1f970ef762168e4bd46f69a3", "tree": "e9e6d07c704118d82a638ae1f01a7ef5b59dd68b", "parents": [ "cd58310d775fc10cc820b27c10f619187b8c4133" ], "author": { "name": "Tony Jones", "email": "tonyj@suse.de", "time": "Tue Oct 16 01:27:48 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Oct 16 09:43:10 2007 -0700" }, "message": "spi doesn\u0027t need class_device\n\nMake the SPI framework and drivers stop using class_device. Update docs\naccordingly ... highlighting just which sysfs paths should be\n\"safe\"/stable.\n\nSigned-off-by: Tony Jones \u003ctonyj@suse.de\u003e\nSigned-off-by: David Brownell \u003cdbrownell@users.sourceforge.net\u003e\nCc: Greg KH \u003cgreg@kroah.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "607717a65d92858fd925bec05baae4d142719f27", "tree": "b7faea733fe3426881e63bc7549db9c97c8bdf59", "parents": [ "2ed6dc34f9ed39bb8e4c81ea1056f0ba56315841" ], "author": { "name": "Paul Jackson", "email": "pj@sgi.com", "time": "Tue Oct 16 01:27:43 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Oct 16 09:43:09 2007 -0700" }, "message": "cpuset: remove sched domain hooks from cpusets\n\nRemove the cpuset hooks that defined sched domains depending on the setting\nof the \u0027cpu_exclusive\u0027 flag.\n\nThe cpu_exclusive flag can only be set on a child if it is set on the\nparent.\n\nThis made that flag painfully unsuitable for use as a flag defining a\npartitioning of a system.\n\nIt was entirely unobvious to a cpuset user what partitioning of sched\ndomains they would be causing when they set that one cpu_exclusive bit on\none cpuset, because it depended on what CPUs were in the remainder of that\ncpusets siblings and child cpusets, after subtracting out other\ncpu_exclusive cpusets.\n\nFurthermore, there was no way on production systems to query the\nresult.\n\nUsing the cpu_exclusive flag for this was simply wrong from the get go.\n\nFortunately, it was sufficiently borked that so far as I know, almost no\nsuccessful use has been made of this. One real time group did use it to\naffectively isolate CPUs from any load balancing efforts. They are willing\nto adapt to alternative mechanisms for this, such as someway to manipulate\nthe list of isolated CPUs on a running system. They can do without this\npresent cpu_exclusive based mechanism while we develop an alternative.\n\nThere is a real risk, to the best of my understanding, of users\naccidentally setting up a partitioned scheduler domains, inhibiting desired\nload balancing across all their CPUs, due to the nonobvious (from the\ncpuset perspective) side affects of the cpu_exclusive flag.\n\nFurthermore, since there was no way on a running system to see what one was\ndoing with sched domains, this change will be invisible to any using code.\nUnless they have real insight to the scheduler load balancing choices, they\nwill be unable to detect that this change has been made in the kernel\u0027s\nbehaviour.\n\nInitial discussion on lkml of this patch has generated much comment. My\n(probably controversial) take on that discussion is that it has reached a\nrough concensus that the current cpuset cpu_exclusive mechanism for\ndefining sched domains is borked. There is no concensus on the\nreplacement. But since we can remove this mechanism, and since its\ncontinued presence risks causing unwanted partitioning of the schedulers\nload balancing, we should remove it while we can, as we proceed to work the\nreplacement scheduler domain mechanisms.\n\nSigned-off-by: Paul Jackson \u003cpj@sgi.com\u003e\nCc: Ingo Molnar \u003cmingo@elte.hu\u003e\nCc: Nick Piggin \u003cnickpiggin@yahoo.com.au\u003e\nCc: Christoph Lameter \u003cclameter@engr.sgi.com\u003e\nCc: Dinakar Guniguntala \u003cdino@in.ibm.com\u003e\nCc: Thomas Gleixner \u003ctglx@linutronix.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "7589670f37736bcc119ebfbd69aafea6d585d1d4", "tree": "471f90dda6bcbcd59cc857b4f0130922bba88fc4", "parents": [ "3e037454bcfa4b187e8293d2121bd8c0f5a5c31c" ], "author": { "name": "Shannon Nelson", "email": "shannon.nelson@intel.com", "time": "Tue Oct 16 01:27:41 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Oct 16 09:43:09 2007 -0700" }, "message": "DCA: Add Direct Cache Access driver\n\nDirect Cache Access (DCA) is a method for warming the CPU cache before data\nis used, with the intent of lessening the impact of cache misses. This\npatch adds a manager and interface for matching up client requests for DCA\nservices with devices that offer DCA services.\n\nIn order to use DCA, a module must do bus writes with the appropriate tag\nbits set to trigger a cache read for a specific CPU. However, different\nCPUs and chipsets can require different sets of tag bits, and the methods\nfor determining the correct bits may be simple hardcoding or may be a\nhardware specific magic incantation. This interface is a way for DCA\nclients to find the correct tag bits for the targeted CPU without needing\nto know the specifics.\n\n [Dave Miller] use DEFINE_SPINLOCK()\n\nSigned-off-by: Shannon Nelson \u003cshannon.nelson@intel.com\u003e\nAcked-by: David S. Miller \u003cdavem@davemloft.net\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "3e037454bcfa4b187e8293d2121bd8c0f5a5c31c", "tree": "751a2eace11b280cc1a19873788b778009188be9", "parents": [ "8ab89567da0cea9bae2c1b5dad47b51c424479e4" ], "author": { "name": "Shannon Nelson", "email": "shannon.nelson@intel.com", "time": "Tue Oct 16 01:27:40 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Oct 16 09:43:09 2007 -0700" }, "message": "I/OAT: Add support for MSI and MSI-X\n\nAdd support for MSI and MSI-X interrupt handling, including the ability\nto choose the desired interrupt method.\n\nSigned-off-by: Shannon Nelson \u003cshannon.nelson@intel.com\u003e\nAcked-by: David S. Miller \u003cdavem@davemloft.net\u003e\n[bunk@kernel.org: drivers/dma/ioat_dma.c: make 3 functions static]\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "223758c77a67b1eb383a92b35d67de29502a9f55", "tree": "1c7ac6de4d105a84fb86ae53709a851301c5883b", "parents": [ "70af26b2d4bc55570ac30b5eced4ff0319e24455" ], "author": { "name": "Shannon Nelson", "email": "shannon.nelson@intel.com", "time": "Tue Oct 16 01:27:37 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Oct 16 09:43:09 2007 -0700" }, "message": "I/OAT: New device ids\n\nAdd device ids for new revs of the Intel I/OAT DMA engine\n\nSigned-off-by: Shannon Nelson \u003cshannon.nelson@intel.com\u003e\nAcked-by: David S. Miller \u003cdavem@davemloft.net\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "dbcb0f19c877df9026b8c1227758d38bd561e9c4", "tree": "f58c85976906f42ff44798f514177392d7c48d0f", "parents": [ "d8dc74f212c38407fc9f4367181f8f969b719485" ], "author": { "name": "Adrian Bunk", "email": "bunk@stusta.de", "time": "Tue Oct 16 01:26:26 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Oct 16 09:43:03 2007 -0700" }, "message": "mm/mempolicy.c: cleanups\n\nThis patch contains the following cleanups:\n- every file should include the headers containing the prototypes for\n its global functions\n- make the follosing needlessly global functions static:\n - migrate_to_node()\n - do_mbind()\n - sp_alloc()\n - mpol_rebind_policy()\n\n[akpm@linux-foundation.org: fix uninitialised var warning]\nSigned-off-by: Adrian Bunk \u003cbunk@stusta.de\u003e\nAcked-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "d8dc74f212c38407fc9f4367181f8f969b719485", "tree": "2ff1ec0aaee1e6b3ee29d258a7158deb4b43688c", "parents": [ "af767cbdd78f293485c294113885d95e7f1da123" ], "author": { "name": "Adrian Bunk", "email": "bunk@stusta.de", "time": "Tue Oct 16 01:26:26 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Oct 16 09:43:03 2007 -0700" }, "message": "mm/shmem.c: make 3 functions static\n\nThis patch makes three needlessly global functions static.\n\nSigned-off-by: Adrian Bunk \u003cbunk@stusta.de\u003e\nCc: Hugh Dickins \u003chugh@veritas.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "54f9f80d6543fb7b157d3b11e2e7911dc1379790", "tree": "70d34e45f4d1694609db25da0ccad90b4b0ad473", "parents": [ "e4e574b767ba63101cfda2b42d72f38546319297" ], "author": { "name": "Adam Litke", "email": "agl@us.ibm.com", "time": "Tue Oct 16 01:26:20 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Oct 16 09:43:02 2007 -0700" }, "message": "hugetlb: Add hugetlb_dynamic_pool sysctl\n\nThe maximum size of the huge page pool can be controlled using the overall\nsize of the hugetlb filesystem (via its \u0027size\u0027 mount option). However in the\ncommon case the this will not be set as the pool is traditionally fixed in\nsize at boot time. In order to maintain the expected semantics, we need to\nprevent the pool expanding by default.\n\nThis patch introduces a new sysctl controlling dynamic pool resizing. When\nthis is enabled the pool will expand beyond its base size up to the size of\nthe hugetlb filesystem. It is disabled by default.\n\nSigned-off-by: Adam Litke \u003cagl@us.ibm.com\u003e\nAcked-by: Andy Whitcroft \u003capw@shadowen.org\u003e\nAcked-by: Dave McCracken \u003cdave.mccracken@oracle.com\u003e\nCc: William Irwin \u003cbill.irwin@oracle.com\u003e\nCc: David Gibson \u003cdavid@gibson.dropbear.id.au\u003e\nCc: Ken Chen \u003ckenchen@google.com\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": "98f3cfc1dc7a53b629d43b7844a9b3f786213048", "tree": "de98ff0e3c25b01863c31abc0f3054de978b9ef8", "parents": [ "48e94196a533dbee17c252bf80d0310fb8c8c2eb" ], "author": { "name": "Yasunori Goto", "email": "y-goto@jp.fujitsu.com", "time": "Tue Oct 16 01:26:14 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Oct 16 09:43:02 2007 -0700" }, "message": "memory hotplug: Hot-add with sparsemem-vmemmap\n\nThis patch is to avoid panic when memory hot-add is executed with\nsparsemem-vmemmap. Current vmemmap-sparsemem code doesn\u0027t support memory\nhot-add. Vmemmap must be populated when hot-add. This is for\n2.6.23-rc2-mm2.\n\nTodo: # Even if this patch is applied, the message \"[xxxx-xxxx] potential\n offnode page_structs\" is displayed. To allocate memmap on its node,\n memmap (and pgdat) must be initialized itself like chicken and\n egg relationship.\n\n # vmemmap_unpopulate will be necessary for followings.\n - For cancel hot-add due to error.\n - For unplug.\n\nSigned-off-by: Yasunori Goto \u003cy-goto@jp.fujitsu.com\u003e\nCc: Andy Whitcroft \u003capw@shadowen.org\u003e\nCc: Christoph Lameter \u003cclameter@sgi.com\u003e\nCc: Mel Gorman \u003cmel@csn.ul.ie\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "48e94196a533dbee17c252bf80d0310fb8c8c2eb", "tree": "9b29060b0e2600dc7da645fd436dc94c25d1fb36", "parents": [ "de33b821f34dc9e2fabf81a8ba464f3ef039bd00" ], "author": { "name": "KAMEZAWA Hiroyuki", "email": "kamezawa.hiroyu@jp.fujitsu.com", "time": "Tue Oct 16 01:26:14 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Oct 16 09:43:02 2007 -0700" }, "message": "fix memory hot remove not configured case.\n\nNow, arch dependent code around CONFIG_MEMORY_HOTREMOVE is a mess.\nThis patch cleans up them. This is against 2.6.23-rc6-mm1.\n\n - fix compile failure on ia64/ CONFIG_MEMORY_HOTPLUG \u0026\u0026 !CONFIG_MEMORY_HOTREMOVE case.\n - For !CONFIG_MEMORY_HOTREMOVE, add generic no-op remove_memory(),\n which returns -EINVAL.\n - removed remove_pages() only used in powerpc.\n - removed no-op remove_memory() in i386, sh, sparc64, x86_64.\n\n - only powerpc returns -ENOSYS at memory hot remove(no-op). changes it\n to return -EINVAL.\n\nNote:\nCurrently, only ia64 supports CONFIG_MEMORY_HOTREMOVE. I welcome other\narchs if there are requirements and testers.\n\nSigned-off-by: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@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": "0c0e6195896535481173df98935ad8db174f4d45", "tree": "2b35d3b81ba54b5d38e691d2a2019f4bcdfd1dce", "parents": [ "a5d76b54a3f3a40385d7f76069a2feac9f1bad63" ], "author": { "name": "KAMEZAWA Hiroyuki", "email": "kamezawa.hiroyu@jp.fujitsu.com", "time": "Tue Oct 16 01:26:12 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Oct 16 09:43:02 2007 -0700" }, "message": "memory unplug: page offline\n\nLogic.\n - set all pages in [start,end) as isolated migration-type.\n by this, all free pages in the range will be not-for-use.\n - Migrate all LRU pages in the range.\n - Test all pages in the range\u0027s refcnt is zero or not.\n\nTodo:\n - allocate migration destination page from better area.\n - confirm page_count(page)\u003d\u003d 0 \u0026\u0026 PageReserved(page) page is safe to be freed..\n (I don\u0027t like this kind of page but..\n - Find out pages which cannot be migrated.\n - more running tests.\n - Use reclaim for unplugging other memory type area.\n\nSigned-off-by: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nSigned-off-by: Yasunori Goto \u003cy-goto@jp.fujitsu.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "a5d76b54a3f3a40385d7f76069a2feac9f1bad63", "tree": "f58c432a4224b3be032bd4a4afa79dfa55d198a6", "parents": [ "75884fb1c6388f3713ddcca662f3647b3129aaeb" ], "author": { "name": "KAMEZAWA Hiroyuki", "email": "kamezawa.hiroyu@jp.fujitsu.com", "time": "Tue Oct 16 01:26:11 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Oct 16 09:43:02 2007 -0700" }, "message": "memory unplug: page isolation\n\nImplement generic chunk-of-pages isolation method by using page grouping ops.\n\nThis patch add MIGRATE_ISOLATE to MIGRATE_TYPES. By this\n - MIGRATE_TYPES increases.\n - bitmap for migratetype is enlarged.\n\npages of MIGRATE_ISOLATE migratetype will not be allocated even if it is free.\nBy this, you can isolated *freed* pages from users. How-to-free pages is not\na purpose of this patch. You may use reclaim and migrate codes to free pages.\n\nIf start_isolate_page_range(start,end) is called,\n - migratetype of the range turns to be MIGRATE_ISOLATE if\n its type is MIGRATE_MOVABLE. (*) this check can be updated if other\n memory reclaiming works make progress.\n - MIGRATE_ISOLATE is not on migratetype fallback list.\n - All free pages and will-be-freed pages are isolated.\nTo check all pages in the range are isolated or not, use test_pages_isolated(),\nTo cancel isolation, use undo_isolate_page_range().\n\nChanges V6 -\u003e V7\n - removed unnecessary #ifdef\n\nThere are HOLES_IN_ZONE handling codes...I\u0027m glad if we can remove them..\n\nSigned-off-by: Yasunori Goto \u003cy-goto@jp.fujitsu.com\u003e\nSigned-off-by: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "75884fb1c6388f3713ddcca662f3647b3129aaeb", "tree": "7debdd89fd94d099de3d3763b47af00ef6359d9d", "parents": [ "48f13bf3e742fca8aab87f6c39451d03bf5952d4" ], "author": { "name": "KAMEZAWA Hiroyuki", "email": "kamezawa.hiroyu@jp.fujitsu.com", "time": "Tue Oct 16 01:26:10 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Oct 16 09:43:01 2007 -0700" }, "message": "memory unplug: memory hotplug cleanup\n\nA clean up patch for \"scanning memory resource [start, end)\" operation.\n\nNow, find_next_system_ram() function is used in memory hotplug, but this\ninterface is not easy to use and codes are complicated.\n\nThis patch adds walk_memory_resouce(start,len,arg,func) function.\nThe function \u0027func\u0027 is called per valid memory resouce range in [start,pfn).\n\n[pbadari@us.ibm.com: Error handling in walk_memory_resource()]\nSigned-off-by: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nSigned-off-by: 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": "42a9fdbb12ac6c027b4b91ab9b5a60aa3a834489", "tree": "d319573849af86fa405b93e5b93add0d34305db7", "parents": [ "4c93c355d5d563f300df7e61ef753d7a064411e9" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Tue Oct 16 01:26:09 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Oct 16 09:43:01 2007 -0700" }, "message": "SLUB: Optimize cacheline use for zeroing\n\nWe touch a cacheline in the kmem_cache structure for zeroing to get the\nsize. However, the hot paths in slab_alloc and slab_free do not reference\nany other fields in kmem_cache, so we may have to just bring in the\ncacheline for this one access.\n\nAdd a new field to kmem_cache_cpu that contains the object size. That\ncacheline must already be used in the hotpaths. So we save one cacheline\non every slab_alloc if we zero.\n\nWe need to update the kmem_cache_cpu object size if an aliasing operation\nchanges the objsize of an non debug slab.\n\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "4c93c355d5d563f300df7e61ef753d7a064411e9", "tree": "24bcdbed58a51c69640da9c8e220dd5ce0c054a7", "parents": [ "ee3c72a14bfecdf783738032ff3c73ef6412f5b3" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Tue Oct 16 01:26:08 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Oct 16 09:43:01 2007 -0700" }, "message": "SLUB: Place kmem_cache_cpu structures in a NUMA aware way\n\nThe kmem_cache_cpu structures introduced are currently an array placed in the\nkmem_cache struct. Meaning the kmem_cache_cpu structures are overwhelmingly\non the wrong node for systems with a higher amount of nodes. These are\nperformance critical structures since the per node information has\nto be touched for every alloc and free in a slab.\n\nIn order to place the kmem_cache_cpu structure optimally we put an array\nof pointers to kmem_cache_cpu structs in kmem_cache (similar to SLAB).\n\nHowever, the kmem_cache_cpu structures can now be allocated in a more\nintelligent way.\n\nWe would like to put per cpu structures for the same cpu but different\nslab caches in cachelines together to save space and decrease the cache\nfootprint. However, the slab allocators itself control only allocations\nper node. We set up a simple per cpu array for every processor with\n100 per cpu structures which is usually enough to get them all set up right.\nIf we run out then we fall back to kmalloc_node. This also solves the\nbootstrap problem since we do not have to use slab allocator functions\nearly in boot to get memory for the small per cpu structures.\n\nPro:\n\t- NUMA aware placement improves memory performance\n\t- All global structures in struct kmem_cache become readonly\n\t- Dense packing of per cpu structures reduces cacheline\n\t footprint in SMP and NUMA.\n\t- Potential avoidance of exclusive cacheline fetches\n\t on the free and alloc hotpath since multiple kmem_cache_cpu\n\t structures are in one cacheline. This is particularly important\n\t for the kmalloc array.\n\nCons:\n\t- Additional reference to one read only cacheline (per cpu\n\t array of pointers to kmem_cache_cpu) in both slab_alloc()\n\t and slab_free().\n\n[akinobu.mita@gmail.com: fix cpu hotplug offline/online path]\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nCc: \"Pekka Enberg\" \u003cpenberg@cs.helsinki.fi\u003e\nCc: Akinobu Mita \u003cakinobu.mita@gmail.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "b3fba8da653999c67d7517050f196e92da6f8d3b", "tree": "12ee00ca91ceafe4fa9bb75d62debaf1feebb7b9", "parents": [ "8e65d24c7caf2a4c69b3ae0ce170bf3082ba359f" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Tue Oct 16 01:26:06 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Oct 16 09:43:01 2007 -0700" }, "message": "SLUB: Move page-\u003eoffset to kmem_cache_cpu-\u003eoffset\n\nWe need the offset from the page struct during slab_alloc and slab_free. In\nboth cases we also reference the cacheline of the kmem_cache_cpu structure.\nWe can therefore move the offset field into the kmem_cache_cpu structure\nfreeing up 16 bits in the page struct.\n\nMoving the offset allows an allocation from slab_alloc() without touching the\npage struct in the hot path.\n\nThe only thing left in slab_free() that touches the page struct cacheline for\nper cpu freeing is the checking of SlabDebug(page). The next patch deals with\nthat.\n\nUse the available 16 bits to broaden page-\u003einuse. More than 64k objects per\nslab become possible and we can get rid of the checks for that limitation.\n\nNo need anymore to shrink the order of slabs if we boot with 2M sized slabs\n(slub_min_order\u003d9).\n\nNo need anymore to switch off the offset calculation for very large slabs\nsince the field in the kmem_cache_cpu structure is 32 bits and so the offset\nfield can now handle slab sizes of up to 8GB.\n\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "8e65d24c7caf2a4c69b3ae0ce170bf3082ba359f", "tree": "4f690448c1363bf02f74abd9293126c3e3a9e4c9", "parents": [ "dfb4f09609827301740ef0a11b37530d190f1681" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Tue Oct 16 01:26:06 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Oct 16 09:43:01 2007 -0700" }, "message": "SLUB: Do not use page-\u003emapping\n\nAfter moving the lockless_freelist to kmem_cache_cpu we no longer need\npage-\u003elockless_freelist. Restructure the use of the struct page fields in\nsuch a way that we never touch the mapping field.\n\nThis is turn allows us to remove the special casing of SLUB when determining\nthe mapping of a page (needed for corner cases of virtual caches machines that\nneed to flush caches of processors mapping a page).\n\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "dfb4f09609827301740ef0a11b37530d190f1681", "tree": "eb4d13d8699cf01abada9f45e1670cc601fb4b00", "parents": [ "484f51f820199ab3e0ef15d08f1b6be20f53bf39" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Tue Oct 16 01:26:05 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Oct 16 09:43:01 2007 -0700" }, "message": "SLUB: Avoid page struct cacheline bouncing due to remote frees to cpu slab\n\nA remote free may access the same page struct that also contains the lockless\nfreelist for the cpu slab. If objects have a short lifetime and are freed by\na different processor then remote frees back to the slab from which we are\ncurrently allocating are frequent. The cacheline with the page struct needs\nto be repeately acquired in exclusive mode by both the allocating thread and\nthe freeing thread. If this is frequent enough then performance will suffer\nbecause of cacheline bouncing.\n\nThis patchset puts the lockless_freelist pointer in its own cacheline. In\norder to make that happen we introduce a per cpu structure called\nkmem_cache_cpu.\n\nInstead of keeping an array of pointers to page structs we now keep an array\nto a per cpu structure that--among other things--contains the pointer to the\nlockless freelist. The freeing thread can then keep possession of exclusive\naccess to the page struct cacheline while the allocating thread keeps its\nexclusive access to the cacheline containing the per cpu structure.\n\nThis works as long as the allocating cpu is able to service its request\nfrom the lockless freelist. If the lockless freelist runs empty then the\nallocating thread needs to acquire exclusive access to the cacheline with\nthe page struct lock the slab.\n\nThe allocating thread will then check if new objects were freed to the per\ncpu slab. If so it will keep the slab as the cpu slab and continue with the\nrecently remote freed objects. So the allocating thread can take a series\nof just freed remote pages and dish them out again. Ideally allocations\ncould be just recycling objects in the same slab this way which will lead\nto an ideal allocation / remote free pattern.\n\nThe number of objects that can be handled in this way is limited by the\ncapacity of one slab. Increasing slab size via slub_min_objects/\nslub_max_order may increase the number of objects and therefore performance.\n\nIf the allocating thread runs out of objects and finds that no objects were\nput back by the remote processor then it will retrieve a new slab (from the\npartial lists or from the page allocator) and start with a whole\nnew set of objects while the remote thread may still be freeing objects to\nthe old cpu slab. This may then repeat until the new slab is also exhausted.\nIf remote freeing has freed objects in the earlier slab then that earlier\nslab will now be on the partial freelist and the allocating thread will\npick that slab next for allocation. So the loop is extended. However,\nboth threads need to take the list_lock to make the swizzling via\nthe partial list happen.\n\nIt is likely that this kind of scheme will keep the objects being passed\naround to a small set that can be kept in the cpu caches leading to increased\nperformance.\n\nMore code cleanups become possible:\n\n- Instead of passing a cpu we can now pass a kmem_cache_cpu structure around.\n Allows reducing the number of parameters to various functions.\n- Can define a new node_match() function for NUMA to encapsulate locality\n checks.\n\nEffect on allocations:\n\nCachelines touched before this patch:\n\n\tWrite:\tpage cache struct and first cacheline of object\n\nCachelines touched after this patch:\n\n\tWrite:\tkmem_cache_cpu cacheline and first cacheline of object\n\tRead: page cache struct (but see later patch that avoids touching\n\t\tthat cacheline)\n\nThe handling when the lockless alloc list runs empty gets to be a bit more\ncomplicated since another cacheline has now to be written to. But that is\nhalfway out of the hot path.\n\nEffect on freeing:\n\nCachelines touched before this patch:\n\n\tWrite: page_struct and first cacheline of object\n\nCachelines touched after this patch depending on how we free:\n\n Write(to cpu_slab):\tkmem_cache_cpu struct and first cacheline of object\n Write(to other):\tpage struct and first cacheline of object\n\n Read(to cpu_slab):\tpage struct to id slab etc. (but see later patch that\n \t\t\tavoids touching the page struct on free)\n Read(to other):\tcpu local kmem_cache_cpu struct to verify its not\n \t\t\tthe cpu slab.\n\nSummary:\n\nPro:\n\t- Distinct cachelines so that concurrent remote frees and local\n\t allocs on a cpuslab can occur without cacheline bouncing.\n\t- Avoids potential bouncing cachelines because of neighboring\n\t per cpu pointer updates in kmem_cache\u0027s cpu_slab structure since\n\t it now grows to a cacheline (Therefore remove the comment\n\t that talks about that concern).\n\nCons:\n\t- Freeing objects now requires the reading of one additional\n\t cacheline. That can be mitigated for some cases by the following\n\t patches but its not possible to completely eliminate these\n\t references.\n\n\t- Memory usage grows slightly.\n\n\tThe size of each per cpu object is blown up from one word\n\t(pointing to the page_struct) to one cacheline with various data.\n\tSo this is NR_CPUS*NR_SLABS*L1_BYTES more memory use. Lets say\n\tNR_SLABS is 100 and a cache line size of 128 then we have just\n\tincreased SLAB metadata requirements by 12.8k per cpu.\n\t(Another later patch reduces these requirements)\n\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "467c996c1e1910633fa8e7adc9b052aa3ed5f97c", "tree": "09e0e70160386be1bdaa12801afddf287e12c8a1", "parents": [ "d9c2340052278d8eb2ffb16b0484f8f794def4de" ], "author": { "name": "Mel Gorman", "email": "mel@csn.ul.ie", "time": "Tue Oct 16 01:26:02 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Oct 16 09:43:00 2007 -0700" }, "message": "Print out statistics in relation to fragmentation avoidance to /proc/pagetypeinfo\n\nThis patch provides fragmentation avoidance statistics via /proc/pagetypeinfo.\n The information is collected only on request so there is no runtime overhead.\n The statistics are in three parts:\n\nThe first part prints information on the size of blocks that pages are\nbeing grouped on and looks like\n\nPage block order: 10\nPages per block: 1024\n\nThe second part is a more detailed version of /proc/buddyinfo and looks like\n\nFree pages count per migrate type at order 0 1 2 3 4 5 6 7 8 9 10\nNode 0, zone DMA, type Unmovable 0 0 0 0 0 0 0 0 0 0 0\nNode 0, zone DMA, type Reclaimable 1 0 0 0 0 0 0 0 0 0 0\nNode 0, zone DMA, type Movable 0 0 0 0 0 0 0 0 0 0 0\nNode 0, zone DMA, type Reserve 0 4 4 0 0 0 0 1 0 1 0\nNode 0, zone Normal, type Unmovable 111 8 4 4 2 3 1 0 0 0 0\nNode 0, zone Normal, type Reclaimable 293 89 8 0 0 0 0 0 0 0 0\nNode 0, zone Normal, type Movable 1 6 13 9 7 6 3 0 0 0 0\nNode 0, zone Normal, type Reserve 0 0 0 0 0 0 0 0 0 0 4\n\nThe third part looks like\n\nNumber of blocks type Unmovable Reclaimable Movable Reserve\nNode 0, zone DMA 0 1 2 1\nNode 0, zone Normal 3 17 94 4\n\nTo walk the zones within a node with interrupts disabled, walk_zones_in_node()\nis introduced and shared between /proc/buddyinfo, /proc/zoneinfo and\n/proc/pagetypeinfo to reduce code duplication. It seems specific to what\nvmstat.c requires but could be broken out as a general utility function in\nmmzone.c if there were other other potential users.\n\nSigned-off-by: Mel Gorman \u003cmel@csn.ul.ie\u003e\nAcked-by: Andy Whitcroft \u003capw@shadowen.org\u003e\nAcked-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "d9c2340052278d8eb2ffb16b0484f8f794def4de", "tree": "aec7e4e11473a4fcdfd389c718544780a042c6df", "parents": [ "d100313fd615cc30374ff92e0b3facb053838330" ], "author": { "name": "Mel Gorman", "email": "mel@csn.ul.ie", "time": "Tue Oct 16 01:26:01 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Oct 16 09:43:00 2007 -0700" }, "message": "Do not depend on MAX_ORDER when grouping pages by mobility\n\nCurrently mobility grouping works at the MAX_ORDER_NR_PAGES level. This makes\nsense for the majority of users where this is also the huge page size.\nHowever, on platforms like ia64 where the huge page size is runtime\nconfigurable it is desirable to group at a lower order. On x86_64 and\noccasionally on x86, the hugepage size may not always be MAX_ORDER_NR_PAGES.\n\nThis patch groups pages together based on the value of HUGETLB_PAGE_ORDER. It\nuses a compile-time constant if possible and a variable where the huge page\nsize is runtime configurable.\n\nIt is assumed that grouping should be done at the lowest sensible order and\nthat the user would not want to override this. If this is not true,\npage_block order could be forced to a variable initialised via a boot-time\nkernel parameter.\n\nOne potential issue with this patch is that IA64 now parses hugepagesz with\nearly_param() instead of __setup(). __setup() is called after the memory\nallocator has been initialised and the pageblock bitmaps already setup. In\ntests on one IA64 there did not seem to be any problem with using\nearly_param() and in fact may be more correct as it guarantees the parameter\nis handled before the parsing of hugepages\u003d.\n\nSigned-off-by: Mel Gorman \u003cmel@csn.ul.ie\u003e\nAcked-by: Andy Whitcroft \u003capw@shadowen.org\u003e\nAcked-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "64c5e135bf5a2a7f0ededb3435a31adbe0202f0c", "tree": "cb4ff93cbcc3c27176723419a313d7c53545d36b", "parents": [ "ac0e5b7a6b93fb291b01fe1e951e3c16bcdd3503" ], "author": { "name": "Mel Gorman", "email": "mel@csn.ul.ie", "time": "Tue Oct 16 01:25:59 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Oct 16 09:43:00 2007 -0700" }, "message": "don\u0027t group high order atomic allocations\n\nGrouping high-order atomic allocations together was intended to allow\nbursty users of atomic allocations to work such as e1000 in situations\nwhere their preallocated buffers were depleted. This did not work in at\nleast one case with a wireless network adapter needing order-1 allocations\nfrequently. To resolve that, the free pages used for min_free_kbytes were\nmoved to separate contiguous blocks with the patch\nbias-the-location-of-pages-freed-for-min_free_kbytes-in-the-same-max_order_nr_pages-blocks.\n\nIt is felt that keeping the free pages in the same contiguous blocks should\nbe sufficient for bursty short-lived high-order atomic allocations to\nsucceed, maybe even with the e1000. Even if there is a failure, increasing\nthe value of min_free_kbytes will free pages as contiguous bloks in\ncontrast to the standard buddy allocator which makes no attempt to keep the\nminimum number of free pages contiguous.\n\nThis patch backs out grouping high order atomic allocations together to\ndetermine if it is really needed or not. If a new report comes in about\nhigh-order atomic allocations failing, the feature can be reintroduced to\ndetermine if it fixes the problem or not. As a side-effect, this patch\nreduces by 1 the number of bits required to track the mobility type of\npages within a MAX_ORDER_NR_PAGES block.\n\nSigned-off-by: Mel Gorman \u003cmel@csn.ul.ie\u003e\nAcked-by: Andy Whitcroft \u003capw@shadowen.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "ac0e5b7a6b93fb291b01fe1e951e3c16bcdd3503", "tree": "732f67c8de6e0d2e001b60c17af9599468b80163", "parents": [ "56fd56b868f19385c50af8941a4c78df433b2d32" ], "author": { "name": "Mel Gorman", "email": "mel@csn.ul.ie", "time": "Tue Oct 16 01:25:58 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Oct 16 09:43:00 2007 -0700" }, "message": "remove PAGE_GROUP_BY_MOBILITY\n\nGrouping pages by mobility can be disabled at compile-time. This was\nconsidered undesirable by a number of people. However, in the current stack of\npatches, it is not a simple case of just dropping the configurable patch as it\nwould cause merge conflicts. This patch backs out the configuration option.\n\nSigned-off-by: Mel Gorman \u003cmel@csn.ul.ie\u003e\nAcked-by: Andy Whitcroft \u003capw@shadowen.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "56fd56b868f19385c50af8941a4c78df433b2d32", "tree": "5ea8362e6e141e2d1124d4640811c76489567bc5", "parents": [ "5c0e3066474b57c56ff0d88ca31d95bd14232fee" ], "author": { "name": "Mel Gorman", "email": "mel@csn.ul.ie", "time": "Tue Oct 16 01:25:58 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Oct 16 09:43:00 2007 -0700" }, "message": "Bias the location of pages freed for min_free_kbytes in the same MAX_ORDER_NR_PAGES blocks\n\nThe standard buddy allocator always favours the smallest block of pages.\nThe effect of this is that the pages free to satisfy min_free_kbytes tends\nto be preserved since boot time at the same location of memory ffor a very\nlong time and as a contiguous block. When an administrator sets the\nreserve at 16384 at boot time, it tends to be the same MAX_ORDER blocks\nthat remain free. This allows the occasional high atomic allocation to\nsucceed up until the point the blocks are split. In practice, it is\ndifficult to split these blocks but when they do split, the benefit of\nhaving min_free_kbytes for contiguous blocks disappears. Additionally,\nincreasing min_free_kbytes once the system has been running for some time\nhas no guarantee of creating contiguous blocks.\n\nOn the other hand, CONFIG_PAGE_GROUP_BY_MOBILITY favours splitting large\nblocks when there are no free pages of the appropriate type available. A\nside-effect of this is that all blocks in memory tends to be used up and\nthe contiguous free blocks from boot time are not preserved like in the\nvanilla allocator. This can cause a problem if a new caller is unwilling\nto reclaim or does not reclaim for long enough.\n\nA failure scenario was found for a wireless network device allocating\norder-1 atomic allocations but the allocations were not intense or frequent\nenough for a whole block of pages to be preserved for MIGRATE_HIGHALLOC.\nThis was reproduced on a desktop by booting with mem\u003d256mb, forcing the\ndriver to allocate at order-1, running a bittorrent client (downloading a\ndebian ISO) and building a kernel with -j2.\n\nThis patch addresses the problem on the desktop machine booted with\nmem\u003d256mb. It works by setting aside a reserve of MAX_ORDER_NR_PAGES\nblocks, the number of which depends on the value of min_free_kbytes. These\nblocks are only fallen back to when there is no other free pages. Then the\nsmallest possible page is used just like the normal buddy allocator instead\nof the largest possible page to preserve contiguous pages The pages in free\nlists in the reserve blocks are never taken for another migrate type. The\nresults is that even if min_free_kbytes is set to a low value, contiguous\nblocks will be preserved in the MIGRATE_RESERVE blocks.\n\nThis works better than the vanilla allocator because if min_free_kbytes is\nincreased, a new reserve block will be chosen based on the location of\nreclaimable pages and the block will free up as contiguous pages. In the\nvanilla allocator, no effort is made to target a block of pages to free as\ncontiguous pages and min_free_kbytes pages are scattered randomly.\n\nThis effect has been observed on the test machine. min_free_kbytes was set\ninitially low but it was kept as a contiguous free block within\nMIGRATE_RESERVE. min_free_kbytes was then set to a higher value and over a\nperiod of time, the free blocks were within the reserve and coalescing.\nHow long it takes to free up depends on how quickly LRU is rotating.\nAmusingly, this means that more activity will free the blocks faster.\n\nThis mechanism potentially replaces MIGRATE_HIGHALLOC as it may be more\neffective than grouping contiguous free pages together. It all depends on\nwhether the number of active atomic high allocations exceeds\nmin_free_kbytes or not. If the number of active allocations exceeds\nmin_free_kbytes, it\u0027s worth it but maybe in that situation, min_free_kbytes\nshould be set higher. Once there are no more reports of allocation\nfailures, a patch will be submitted that backs out MIGRATE_HIGHALLOC and\nsee if the reports stay missing.\n\nCredit to Mariusz Kozlowski for discovering the problem, describing the\nfailure scenario and testing patches and scenarios.\n\n[akpm@linux-foundation.org: cleanups]\nSigned-off-by: Mel Gorman \u003cmel@csn.ul.ie\u003e\nAcked-by: Andy Whitcroft \u003capw@shadowen.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "5c0e3066474b57c56ff0d88ca31d95bd14232fee", "tree": "90c963c62891db4a9039e84e615c01408b09c845", "parents": [ "46dafbca2bba811665b01d8cedf911204820623c" ], "author": { "name": "Mel Gorman", "email": "mel@csn.ul.ie", "time": "Tue Oct 16 01:25:56 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Oct 16 09:43:00 2007 -0700" }, "message": "Fix corruption of memmap on IA64 SPARSEMEM when mem_section is not a power of 2\n\nThere are problems in the use of SPARSEMEM and pageblock flags that causes\nproblems on ia64.\n\nThe first part of the problem is that units are incorrect in\nSECTION_BLOCKFLAGS_BITS computation. This results in a map_section\u0027s\nsection_mem_map being treated as part of a bitmap which isn\u0027t good. This\nwas evident with an invalid virtual address when mem_init attempted to free\nbootmem pages while relinquishing control from the bootmem allocator.\n\nThe second part of the problem occurs because the pageblock flags bitmap is\nbe located with the mem_section. The SECTIONS_PER_ROOT computation using\nsizeof (mem_section) may not be a power of 2 depending on the size of the\nbitmap. This renders masks and other such things not power of 2 base.\nThis issue was seen with SPARSEMEM_EXTREME on ia64. This patch moves the\nbitmap outside of mem_section and uses a pointer instead in the\nmem_section. The bitmaps are allocated when the section is being\ninitialised.\n\nNote that sparse_early_usemap_alloc() does not use alloc_remap() like\nsparse_early_mem_map_alloc(). The allocation required for the bitmap on\nx86, the only architecture that uses alloc_remap is typically smaller than\na cache line. alloc_remap() pads out allocations to the cache size which\nwould be a needless waste.\n\nCredit to Bob Picco for identifying the original problem and effecting a\nfix for the SECTION_BLOCKFLAGS_BITS calculation. Credit to Andy Whitcroft\nfor devising the best way of allocating the bitmaps only when required for\nthe section.\n\n[wli@holomorphy.com: warning fix]\nSigned-off-by: Bob Picco \u003cbob.picco@hp.com\u003e\nSigned-off-by: Andy Whitcroft \u003capw@shadowen.org\u003e\nSigned-off-by: Mel Gorman \u003cmel@csn.ul.ie\u003e\nCc: \"Luck, Tony\" \u003ctony.luck@intel.com\u003e\nSigned-off-by: William Irwin \u003cbill.irwin@oracle.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "e010487dbe09d63cf916fd1b119d17abd0f48207", "tree": "37c7f36913daf4bc0a68a1d0ba1cc30ee0d4e307", "parents": [ "e12ba74d8ff3e2f73a583500d7095e406df4d093" ], "author": { "name": "Mel Gorman", "email": "mel@csn.ul.ie", "time": "Tue Oct 16 01:25:53 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Oct 16 09:43:00 2007 -0700" }, "message": "Group high-order atomic allocations\n\nIn rare cases, the kernel needs to allocate a high-order block of pages\nwithout sleeping. For example, this is the case with e1000 cards configured\nto use jumbo frames. Migrating or reclaiming pages in this situation is not\nan option.\n\nThis patch groups these allocations together as much as possible by adding a\nnew MIGRATE_TYPE. The MIGRATE_HIGHATOMIC type are exactly what they sound\nlike. Care is taken that pages of other migrate types do not use the same\nblocks as high-order atomic allocations.\n\nSigned-off-by: Mel Gorman \u003cmel@csn.ul.ie\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "e12ba74d8ff3e2f73a583500d7095e406df4d093", "tree": "a0d3385b65f0b3e1e00b0bbf11b75e7538a93edb", "parents": [ "c361be55b3128474aa66d31092db330b07539103" ], "author": { "name": "Mel Gorman", "email": "mel@csn.ul.ie", "time": "Tue Oct 16 01:25:52 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Oct 16 09:43:00 2007 -0700" }, "message": "Group short-lived and reclaimable kernel allocations\n\nThis patch marks a number of allocations that are either short-lived such as\nnetwork buffers or are reclaimable such as inode allocations. When something\nlike updatedb is called, long-lived and unmovable kernel allocations tend to\nbe spread throughout the address space which increases fragmentation.\n\nThis patch groups these allocations together as much as possible by adding a\nnew MIGRATE_TYPE. The MIGRATE_RECLAIMABLE type is for allocations that can be\nreclaimed on demand, but not moved. i.e. they can be migrated by deleting\nthem and re-reading the information from elsewhere.\n\nSigned-off-by: Mel Gorman \u003cmel@csn.ul.ie\u003e\nCc: Andy Whitcroft \u003capw@shadowen.org\u003e\nCc: Christoph Lameter \u003cclameter@sgi.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "b92a6edd4b77a8794adb497280beea5df5e59a14", "tree": "396ea5cf2b53fc066e949c443f03747ec868de1e", "parents": [ "535131e6925b4a95f321148ad7293f496e0e58d7" ], "author": { "name": "Mel Gorman", "email": "mel@csn.ul.ie", "time": "Tue Oct 16 01:25:50 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Oct 16 09:42:59 2007 -0700" }, "message": "Add a configure option to group pages by mobility\n\nThe grouping mechanism has some memory overhead and a more complex allocation\npath. This patch allows the strategy to be disabled for small memory systems\nor if it is known the workload is suffering because of the strategy. It also\nacts to show where the page groupings strategy interacts with the standard\nbuddy allocator.\n\nSigned-off-by: Mel Gorman \u003cmel@csn.ul.ie\u003e\nSigned-off-by: Joel Schopp \u003cjschopp@austin.ibm.com\u003e\nCc: Andy Whitcroft \u003capw@shadowen.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "b2a0ac8875a0a3b9f0739b60526f8c5977d2200f", "tree": "31826716b3209751a5468b840ff14190b4a5a8a2", "parents": [ "835c134ec4dd755e5c4470af566db226d1e96742" ], "author": { "name": "Mel Gorman", "email": "mel@csn.ul.ie", "time": "Tue Oct 16 01:25:48 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Oct 16 09:42:59 2007 -0700" }, "message": "Split the free lists for movable and unmovable allocations\n\nThis patch adds the core of the fragmentation reduction strategy. It works by\ngrouping pages together based on their ability to migrate or be reclaimed.\nBasically, it works by breaking the list in zone-\u003efree_area list into\nMIGRATE_TYPES number of lists.\n\nSigned-off-by: Mel Gorman \u003cmel@csn.ul.ie\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "835c134ec4dd755e5c4470af566db226d1e96742", "tree": "7bc659978b4fba5089fc820185a8b6f0cc010b08", "parents": [ "954ffcb35f5aca428661d29b96c4eee82b3c19cd" ], "author": { "name": "Mel Gorman", "email": "mel@csn.ul.ie", "time": "Tue Oct 16 01:25:47 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Oct 16 09:42:59 2007 -0700" }, "message": "Add a bitmap that is used to track flags affecting a block of pages\n\nHere is the latest revision of the anti-fragmentation patches. Of particular\nnote in this version is special treatment of high-order atomic allocations.\nCare is taken to group them together and avoid grouping pages of other types\nnear them. Artifical tests imply that it works. I\u0027m trying to get the\nhardware together that would allow setting up of a \"real\" test. If anyone\nalready has a setup and test that can trigger the atomic-allocation problem,\nI\u0027d appreciate a test of these patches and a report. The second major change\nis that these patches will apply cleanly with patches that implement\nanti-fragmentation through zones.\n\nkernbench shows effectively no performance difference varying between -0.2%\nand +2% on a variety of test machines. Success rates for huge page allocation\nare dramatically increased. For example, on a ppc64 machine, the vanilla\nkernel was only able to allocate 1% of memory as a hugepage and this was due\nto a single hugepage reserved as min_free_kbytes. With these patches applied,\n17% was allocatable as superpages. With reclaim-related fixes from Andy\nWhitcroft, it was 40% and further reclaim-related improvements should increase\nthis further.\n\nChangelog Since V28\no Group high-order atomic allocations together\no It is no longer required to set min_free_kbytes to 10% of memory. A value\n of 16384 in most cases will be sufficient\no Now applied with zone-based anti-fragmentation\no Fix incorrect VM_BUG_ON within buffered_rmqueue()\no Reorder the stack so later patches do not back out work from earlier patches\no Fix bug were journal pages were being treated as movable\no Bias placement of non-movable pages to lower PFNs\no More agressive clustering of reclaimable pages in reactions to workloads\n like updatedb that flood the size of inode caches\n\nChangelog Since V27\n\no Renamed anti-fragmentation to Page Clustering. Anti-fragmentation was giving\n the mistaken impression that it was the 100% solution for high order\n allocations. Instead, it greatly increases the chances high-order\n allocations will succeed and lays the foundation for defragmentation and\n memory hot-remove to work properly\no Redefine page groupings based on ability to migrate or reclaim instead of\n basing on reclaimability alone\no Get rid of spurious inits\no Per-cpu lists are no longer split up per-type. Instead the per-cpu list is\n searched for a page of the appropriate type\no Added more explanation commentary\no Fix up bug in pageblock code where bitmap was used before being initalised\n\nChangelog Since V26\no Fix double init of lists in setup_pageset\n\nChangelog Since V25\no Fix loop order of for_each_rclmtype_order so that order of loop matches args\no gfpflags_to_rclmtype uses gfp_t instead of unsigned long\no Rename get_pageblock_type() to get_page_rclmtype()\no Fix alignment problem in move_freepages()\no Add mechanism for assigning flags to blocks of pages instead of page-\u003eflags\no On fallback, do not examine the preferred list of free pages a second time\n\nThe purpose of these patches is to reduce external fragmentation by grouping\npages of related types together. When pages are migrated (or reclaimed under\nmemory pressure), large contiguous pages will be freed.\n\nThis patch works by categorising allocations by their ability to migrate;\n\nMovable - The pages may be moved with the page migration mechanism. These are\n\tgenerally userspace pages.\n\nReclaimable - These are allocations for some kernel caches that are\n\treclaimable or allocations that are known to be very short-lived.\n\nUnmovable - These are pages that are allocated by the kernel that\n\tare not trivially reclaimed. For example, the memory allocated for a\n\tloaded module would be in this category. By default, allocations are\n\tconsidered to be of this type\n\nHighAtomic - These are high-order allocations belonging to callers that\n\tcannot sleep or perform any IO. In practice, this is restricted to\n\tjumbo frame allocation for network receive. It is assumed that the\n\tallocations are short-lived\n\nInstead of having one MAX_ORDER-sized array of free lists in struct free_area,\nthere is one for each type of reclaimability. Once a 2^MAX_ORDER block of\npages is split for a type of allocation, it is added to the free-lists for\nthat type, in effect reserving it. Hence, over time, pages of the different\ntypes can be clustered together.\n\nWhen the preferred freelists are expired, the largest possible block is taken\nfrom an alternative list. Buddies that are split from that large block are\nplaced on the preferred allocation-type freelists to mitigate fragmentation.\n\nThis implementation gives best-effort for low fragmentation in all zones.\nIdeally, min_free_kbytes needs to be set to a value equal to 4 * (1 \u003c\u003c\n(MAX_ORDER-1)) pages in most cases. This would be 16384 on x86 and x86_64 for\nexample.\n\nOur tests show that about 60-70% of physical memory can be allocated on a\ndesktop after a few days uptime. In benchmarks and stress tests, we are\nfinding that 80% of memory is available as contiguous blocks at the end of the\ntest. To compare, a standard kernel was getting \u003c 1% of memory as large pages\non a desktop and about 8-12% of memory as large pages at the end of stress\ntests.\n\nFollowing this email are 12 patches that implement thie page grouping feature.\n The first patch introduces a mechanism for storing flags related to a whole\nblock of pages. Then allocations are split between movable and all other\nallocations. Following that are patches to deal with per-cpu pages and make\nthe mechanism configurable. The next patch moves free pages between lists\nwhen partially allocated blocks are used for pages of another migrate type.\nThe second last patch groups reclaimable kernel allocations such as inode\ncaches together. The final patch related to groupings keeps high-order atomic\nallocations.\n\nThe last two patches are more concerned with control of fragmentation. The\nsecond last patch biases placement of non-movable allocations towards the\nstart of memory. This is with a view of supporting memory hot-remove of DIMMs\nwith higher PFNs in the future. The biasing could be enforced a lot heavier\nbut it would cost. The last patch agressively clusters reclaimable pages like\ninode caches together.\n\nThe fragmentation reduction strategy needs to track if pages within a block\ncan be moved or reclaimed so that pages are freed to the appropriate list.\nThis patch adds a bitmap for flags affecting a whole a MAX_ORDER block of\npages.\n\nIn non-SPARSEMEM configurations, the bitmap is stored in the struct zone and\nallocated during initialisation. SPARSEMEM statically allocates the bitmap in\na struct mem_section so that bitmaps do not have to be resized during memory\nhotadd. This wastes a small amount of memory per unused section (usually\nsizeof(unsigned long)) but the complexity of dynamically allocating the memory\nis quite high.\n\nAdditional credit to Andy Whitcroft who reviewed up an earlier implementation\nof the mechanism an suggested how to make it a *lot* cleaner.\n\nSigned-off-by: Mel Gorman \u003cmel@csn.ul.ie\u003e\nCc: Andy Whitcroft \u003capw@shadowen.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "6cb062296f73e74768cca2f3eaf90deac54de02d", "tree": "1572139653a6fc97cdffd06f2c1bfa650da2ce03", "parents": [ "58c0a4a7864b2dad6da4090813322fcd29a11c92" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Tue Oct 16 01:25:41 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Oct 16 09:42:59 2007 -0700" }, "message": "Categorize GFP flags\n\nThe function of GFP_LEVEL_MASK seems to be unclear. In order to clear up\nthe mystery we get rid of it and replace GFP_LEVEL_MASK with 3 sets of GFP\nflags:\n\nGFP_RECLAIM_MASK\tFlags used to control page allocator reclaim behavior.\n\nGFP_CONSTRAINT_MASK\tFlags used to limit where allocations can occur.\n\nGFP_SLAB_BUG_MASK\tFlags that the slab allocator BUG()s on.\n\nThese replace the uses of GFP_LEVEL mask in the slab allocators and in\nvmalloc.c.\n\nThe use of the flags not included in these sets may occur as a result of a\nslab allocation standing in for a page allocation when constructing scatter\ngather lists. Extraneous flags are cleared and not passed through to the\npage allocator. __GFP_MOVABLE/RECLAIMABLE, __GFP_COLD and __GFP_COMP will\nnow be ignored if passed to a slab allocator.\n\nChange the allocation of allocator meta data in SLAB and vmalloc to not\npass through flags listed in GFP_CONSTRAINT_MASK. SLAB already removes the\n__GFP_THISNODE flag for such allocations. Generalize that to also cover\nvmalloc. The use of GFP_CONSTRAINT_MASK also includes __GFP_HARDWALL.\n\nThe impact of allocator metadata placement on access latency to the\ncachelines of the object itself is minimal since metadata is only\nreferenced on alloc and free. The attempt is still made to place the meta\ndata optimally but we consistently allow fallback both in SLAB and vmalloc\n(SLUB does not need to allocate metadata like that).\n\nAllocator metadata may serve multiple in kernel users and thus should not\nbe subject to the limitations arising from a single allocation context.\n\n[akpm@linux-foundation.org: fix fallback_alloc()]\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "0e1e7c7a739562a321fda07c7cd2a97a7114f8f8", "tree": "f2148e5b667152681625c19cf8b2a556500994ea", "parents": [ "523b945855a1427000ffc707c610abe5947ae607" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Tue Oct 16 01:25:38 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Oct 16 09:42:59 2007 -0700" }, "message": "Memoryless nodes: Use N_HIGH_MEMORY for cpusets\n\ncpusets try to ensure that any node added to a cpuset\u0027s mems_allowed is\non-line and contains memory. The assumption was that online nodes contained\nmemory. Thus, it is possible to add memoryless nodes to a cpuset and then add\ntasks to this cpuset. This results in continuous series of oom-kill and\napparent system hang.\n\nChange cpusets to use node_states[N_HIGH_MEMORY] [a.k.a. node_memory_map] in\nplace of node_online_map when vetting memories. Return error if admin\nattempts to write a non-empty mems_allowed node mask containing only\nmemoryless-nodes.\n\nSigned-off-by: Lee Schermerhorn \u003clee.schermerhorn@hp.com\u003e\nSigned-off-by: Bob Picco \u003cbob.picco@hp.com\u003e\nSigned-off-by: Nishanth Aravamudan \u003cnacc@us.ibm.com\u003e\nCc: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nCc: Mel Gorman \u003cmel@skynet.ie\u003e\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "523b945855a1427000ffc707c610abe5947ae607", "tree": "2d84b5b6822a2a20bfd79146c08ce06ac8c80b9b", "parents": [ "633c0666b5a5c41c376a5a7e4304d638dc48c1b9" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Tue Oct 16 01:25:37 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Oct 16 09:42:59 2007 -0700" }, "message": "Memoryless nodes: Fix GFP_THISNODE behavior\n\nGFP_THISNODE checks that the zone selected is within the pgdat (node) of the\nfirst zone of a nodelist. That only works if the node has memory. A\nmemoryless node will have its first node on another pgdat (node).\n\nGFP_THISNODE currently will return simply memory on the first pgdat. Thus it\nis returning memory on other nodes. GFP_THISNODE should fail if there is no\nlocal memory on a node.\n\nAdd a new set of zonelists for each node that only contain the nodes that\nbelong to the zones itself so that no fallback is possible.\n\nThen modify gfp_type to pickup the right zone based on the presence of\n__GFP_THISNODE.\n\nDrop the existing GFP_THISNODE checks from the page_allocators hot path.\n\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nAcked-by: Nishanth Aravamudan \u003cnacc@us.ibm.com\u003e\nTested-by: Lee Schermerhorn \u003clee.schermerhorn@hp.com\u003e\nAcked-by: Bob Picco \u003cbob.picco@hp.com\u003e\nCc: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nCc: Mel Gorman \u003cmel@skynet.ie\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "37c0708dbee5825df3bd9ce6ef2199c6c1713970", "tree": "747551aa58484e7f872da118b864c8f3ca6e892d", "parents": [ "56bbd65df0e92a4a8eb70c5f2b416ae2b6c5fb31" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Tue Oct 16 01:25:36 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Oct 16 09:42:58 2007 -0700" }, "message": "Memoryless nodes: Add N_CPU node state\n\nWe need the check for a node with cpu in zone reclaim. Zone reclaim will not\nallow remote zone reclaim if a node has a cpu.\n\n[Lee.Schermerhorn@hp.com: Move setup of N_CPU node state mask]\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nTested-by: Lee Schermerhorn \u003clee.schermerhorn@hp.com\u003e\nAcked-by: Bob Picco \u003cbob.picco@hp.com\u003e\nCc: Nishanth Aravamudan \u003cnacc@us.ibm.com\u003e\nCc: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nCc: Mel Gorman \u003cmel@skynet.ie\u003e\nSigned-off-by: Lee Schermerhorn \u003clee.schermerhorn@hp.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "7ea1530ab3fdfa85441061909cc8040e84776fd4", "tree": "f3af0f8ed40a6df90bdbb9396d6163d59798a821", "parents": [ "13808910713a98cc1159291e62cdfec92cc94d05" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Tue Oct 16 01:25:29 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Oct 16 09:42:58 2007 -0700" }, "message": "Memoryless nodes: introduce mask of nodes with memory\n\nIt is necessary to know if nodes have memory since we have recently begun to\nadd support for memoryless nodes. For that purpose we introduce a two new\nnode states: N_HIGH_MEMORY and N_NORMAL_MEMORY.\n\nA node has its bit in N_HIGH_MEMORY set if it has any memory regardless of the\ntype of mmemory. If a node has memory then it has at least one zone defined\nin its pgdat structure that is located in the pgdat itself.\n\nA node has its bit in N_NORMAL_MEMORY set if it has a lower zone than\nZONE_HIGHMEM. This means it is possible to allocate memory that is not\nsubject to kmap.\n\nN_HIGH_MEMORY and N_NORMAL_MEMORY can then be used in various places to insure\nthat we do the right thing when we encounter a memoryless node.\n\n[akpm@linux-foundation.org: build fix]\n[Lee.Schermerhorn@hp.com: update N_HIGH_MEMORY node state for memory hotadd]\n[y-goto@jp.fujitsu.com: Fix memory hotplug + sparsemem build]\nSigned-off-by: Lee Schermerhorn \u003cLee.Schermerhorn@hp.com\u003e\nSigned-off-by: Nishanth Aravamudan \u003cnacc@us.ibm.com\u003e\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nAcked-by: Bob Picco \u003cbob.picco@hp.com\u003e\nCc: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nCc: Mel Gorman \u003cmel@skynet.ie\u003e\nSigned-off-by: Yasunori Goto \u003cy-goto@jp.fujitsu.com\u003e\nSigned-off-by: Paul Mundt \u003clethal@linux-sh.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "13808910713a98cc1159291e62cdfec92cc94d05", "tree": "0fd7189dc2a76e1ae165ca5d6e8c6b4e6f1761af", "parents": [ "55144768e100b68447f44c5e5c9deb155ad661bd" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Tue Oct 16 01:25:27 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Oct 16 09:42:58 2007 -0700" }, "message": "Memoryless nodes: Generic management of nodemasks for various purposes\n\nWhy do we need to support memoryless nodes?\n\nKAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e wrote:\n\n\u003e For fujitsu, problem is called \"empty\" node.\n\u003e\n\u003e When ACPI\u0027s SRAT table includes \"possible nodes\", ia64 bootstrap(acpi_numa_init)\n\u003e creates nodes, which includes no memory, no cpu.\n\u003e\n\u003e I tried to remove empty-node in past, but that was denied.\n\u003e It was because we can hot-add cpu to the empty node.\n\u003e (node-hotplug triggered by cpu is not implemented now. and it will be ugly.)\n\u003e\n\u003e\n\u003e For HP, (Lee can comment on this later), they have memory-less-node.\n\u003e As far as I hear, HP\u0027s machine can have following configration.\n\u003e\n\u003e (example)\n\u003e Node0: CPU0 memory AAA MB\n\u003e Node1: CPU1 memory AAA MB\n\u003e Node2: CPU2 memory AAA MB\n\u003e Node3: CPU3 memory AAA MB\n\u003e Node4: Memory XXX GB\n\u003e\n\u003e AAA is very small value (below 16MB) and will be omitted by ia64 bootstrap.\n\u003e After boot, only Node 4 has valid memory (but have no cpu.)\n\u003e\n\u003e Maybe this is memory-interleave by firmware config.\n\nChristoph Lameter \u003cclameter@sgi.com\u003e wrote:\n\n\u003e Future SGI platforms (actually also current one can have but nothing like\n\u003e that is deployed to my knowledge) have nodes with only cpus. Current SGI\n\u003e platforms have nodes with just I/O that we so far cannot manage in the\n\u003e core. So the arch code maps them to the nearest memory node.\n\nLee Schermerhorn \u003cLee.Schermerhorn@hp.com\u003e wrote:\n\n\u003e For the HP platforms, we can configure each cell with from 0% to 100%\n\u003e \"cell local memory\". When we configure with \u003c100% CLM, the \"missing\n\u003e percentages\" are interleaved by hardware on a cache-line granularity to\n\u003e improve bandwidth at the expense of latency for numa-challenged\n\u003e applications [and OSes, but not our problem ;-)]. When we boot Linux on\n\u003e such a config, all of the real nodes have no memory--it all resides in a\n\u003e single interleaved pseudo-node.\n\u003e\n\u003e When we boot Linux on a 100% CLM configuration [\u003d\u003d NUMA], we still have\n\u003e the interleaved pseudo-node. It contains a few hundred MB stolen from\n\u003e the real nodes to contain the DMA zone. [Interleaved memory resides at\n\u003e phys addr 0]. The memoryless-nodes patches, along with the zoneorder\n\u003e patches, support this config as well.\n\u003e\n\u003e Also, when we boot a NUMA config with the \"mem\u003d\" command line,\n\u003e specifying less memory than actually exists, Linux takes the excluded\n\u003e memory \"off the top\" rather than distributing it across the nodes. This\n\u003e can result in memoryless nodes, as well.\n\u003e\n\nThis patch:\n\nPreparation for memoryless node patches.\n\nProvide a generic way to keep nodemasks describing various characteristics of\nNUMA nodes.\n\nRemove the node_online_map and the node_possible map and realize the same\nfunctionality using two nodes stats: N_POSSIBLE and N_ONLINE.\n\n[Lee.Schermerhorn@hp.com: Initialize N_*_MEMORY and N_CPU masks for non-NUMA config]\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nTested-by: Lee Schermerhorn \u003clee.schermerhorn@hp.com\u003e\nAcked-by: Lee Schermerhorn \u003clee.schermerhorn@hp.com\u003e\nAcked-by: Bob Picco \u003cbob.picco@hp.com\u003e\nCc: Nishanth Aravamudan \u003cnacc@us.ibm.com\u003e\nCc: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nCc: Mel Gorman \u003cmel@skynet.ie\u003e\nSigned-off-by: Lee Schermerhorn \u003clee.schermerhorn@hp.com\u003e\nCc: \"Serge E. Hallyn\" \u003cserge@hallyn.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "55144768e100b68447f44c5e5c9deb155ad661bd", "tree": "9889682ee3b64627ad9eb504f30672fad844752f", "parents": [ "03158cd7eb3374843de68421142ca5900df845d9" ], "author": { "name": "Nick Piggin", "email": "npiggin@suse.de", "time": "Tue Oct 16 01:25:26 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Oct 16 09:42:58 2007 -0700" }, "message": "fs: remove some AOP_TRUNCATED_PAGE\n\nprepare/commit_write no longer returns AOP_TRUNCATED_PAGE since OCFS2 and\nGFS2 were converted to the new aops, so we can make some simplifications\nfor that.\n\n[michal.k.k.piotrowski@gmail.com: fix warning]\nSigned-off-by: Nick Piggin \u003cnpiggin@suse.de\u003e\nCc: Michael Halcrow \u003cmhalcrow@us.ibm.com\u003e\nCc: Mark Fasheh \u003cmark.fasheh@oracle.com\u003e\nCc: Steven Whitehouse \u003cswhiteho@redhat.com\u003e\nSigned-off-by: Michal Piotrowski \u003cmichal.k.k.piotrowski@gmail.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "03158cd7eb3374843de68421142ca5900df845d9", "tree": "5e1bfc1f981651e7f7d7cf30afd15d7bd96b2a57", "parents": [ "b6af1bcd8720cb3062c8c4d4c8ba02bee10ff03f" ], "author": { "name": "Nick Piggin", "email": "npiggin@suse.de", "time": "Tue Oct 16 01:25:25 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Oct 16 09:42:58 2007 -0700" }, "message": "fs: restore nobh\n\nImplement nobh in new aops. This is a bit tricky. FWIW, nobh_truncate is\nnow implemented in a way that does not create blocks in sparse regions,\nwhich is a silly thing for it to have been doing (isn\u0027t it?)\n\next2 survives fsx and fsstress. jfs is converted as well... ext3\nshould be easy to do (but not done yet).\n\n[akpm@linux-foundation.org: coding-style fixes]\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": "a20fa20c549ed569885d871f689a59cfd2f6ff77", "tree": "bc6f7119cec83032eb43c27d6ec7bbbebd2fdddb", "parents": [ "f7557e8f7ff785d6c2b5bc914cd1675314ff0fcf" ], "author": { "name": "Nick Piggin", "email": "npiggin@suse.de", "time": "Tue Oct 16 01:25:15 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Oct 16 09:42:56 2007 -0700" }, "message": "With reiserfs no longer using the weird generic_cont_expand, remove it completely.\n\nSigned-off-by: Nick Piggin \u003cnpiggin@suse.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "89e107877b65bf6eff1d63a1302dee9a091586f5", "tree": "8a120a04c46f19229d1cf9b9c546f1818cf84c44", "parents": [ "7765ec26ae1c01bb29bedf910e4efcced8cc81d2" ], "author": { "name": "Nick Piggin", "email": "npiggin@suse.de", "time": "Tue Oct 16 01:25:07 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Oct 16 09:42:55 2007 -0700" }, "message": "fs: new cont helpers\n\nRework the generic block \"cont\" routines to handle the new aops. Supporting\ncont_prepare_write would take quite a lot of code to support, so remove it\ninstead (and we later convert all filesystems to use it).\n\nwrite_begin gets passed AOP_FLAG_CONT_EXPAND when called from\ngeneric_cont_expand, so filesystems can avoid the old hacks they used.\n\nSigned-off-by: Nick Piggin \u003cnpiggin@suse.de\u003e\nCc: OGAWA Hirofumi \u003chirofumi@mail.parknet.co.jp\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "afddba49d18f346e5cc2938b6ed7c512db18ca68", "tree": "4726e3d3b0e9e8e5b5d3b2b0cccb36446bbdf3ca", "parents": [ "637aff46f94a754207c80c8c64bf1b74f24b967d" ], "author": { "name": "Nick Piggin", "email": "npiggin@suse.de", "time": "Tue Oct 16 01:25:01 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Oct 16 09:42:55 2007 -0700" }, "message": "fs: introduce write_begin, write_end, and perform_write aops\n\nThese are intended to replace prepare_write and commit_write with more\nflexible alternatives that are also able to avoid the buffered write\ndeadlock problems efficiently (which prepare_write is unable to do).\n\n[mark.fasheh@oracle.com: API design contributions, code review and fixes]\n[akpm@linux-foundation.org: various fixes]\n[dmonakhov@sw.ru: new aop block_write_begin fix]\nSigned-off-by: Nick Piggin \u003cnpiggin@suse.de\u003e\nSigned-off-by: Mark Fasheh \u003cmark.fasheh@oracle.com\u003e\nSigned-off-by: Dmitriy Monakhov \u003cdmonakhov@openvz.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "2f718ffc16c43a435d12919c75dbfad518abd056", "tree": "55588cb2815d844e9d0b2404cf8ceafe98b5c55d", "parents": [ "08291429cfa6258c4cd95d8833beb40f828b194e" ], "author": { "name": "Nick Piggin", "email": "npiggin@suse.de", "time": "Tue Oct 16 01:24:59 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Oct 16 09:42:55 2007 -0700" }, "message": "mm: buffered write iterator\n\nAdd an iterator data structure to operate over an iovec. Add usercopy\noperators needed by generic_file_buffered_write, and convert that function\nover.\n\nSigned-off-by: Nick Piggin \u003cnpiggin@suse.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "08291429cfa6258c4cd95d8833beb40f828b194e", "tree": "50a206f0f0e7a5400b44073107ff00517e6f50ac", "parents": [ "4a9e5ef1f4f15205e477817a5cefc34bd3f65f55" ], "author": { "name": "Nick Piggin", "email": "npiggin@suse.de", "time": "Tue Oct 16 01:24:59 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Oct 16 09:42:54 2007 -0700" }, "message": "mm: fix pagecache write deadlocks\n\nModify the core write() code so that it won\u0027t take a pagefault while holding a\nlock on the pagecache page. There are a number of different deadlocks possible\nif we try to do such a thing:\n\n1. generic_buffered_write\n2. lock_page\n3. prepare_write\n4. unlock_page+vmtruncate\n5. copy_from_user\n6. mmap_sem(r)\n7. handle_mm_fault\n8. lock_page (filemap_nopage)\n9. commit_write\n10. unlock_page\n\na. sys_munmap / sys_mlock / others\nb. mmap_sem(w)\nc. make_pages_present\nd. get_user_pages\ne. handle_mm_fault\nf. lock_page (filemap_nopage)\n\n2,8\t- recursive deadlock if page is same\n2,8;2,8\t- ABBA deadlock is page is different\n2,6;b,f\t- ABBA deadlock if page is same\n\nThe solution is as follows:\n1. If we find the destination page is uptodate, continue as normal, but use\n atomic usercopies which do not take pagefaults and do not zero the uncopied\n tail of the destination. The destination is already uptodate, so we can\n commit_write the full length even if there was a partial copy: it does not\n matter that the tail was not modified, because if it is dirtied and written\n back to disk it will not cause any problems (uptodate *means* that the\n destination page is as new or newer than the copy on disk).\n\n1a. The above requires that fault_in_pages_readable correctly returns access\n information, because atomic usercopies cannot distinguish between\n non-present pages in a readable mapping, from lack of a readable mapping.\n\n2. If we find the destination page is non uptodate, unlock it (this could be\n made slightly more optimal), then allocate a temporary page to copy the\n source data into. Relock the destination page and continue with the copy.\n However, instead of a usercopy (which might take a fault), copy the data\n from the pinned temporary page via the kernel address space.\n\n(also, rename maxlen to seglen, because it was confusing)\n\nThis increases the CPU/memory copy cost by almost 50% on the affected\nworkloads. That will be solved by introducing a new set of pagecache write\naops in a subsequent patch.\n\nSigned-off-by: Nick Piggin \u003cnpiggin@suse.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "754af6f5a85fcd1ecb456851d20c65e4c6ce10ab", "tree": "8c985bfd704a8c993d6ca992725969c6fc5c9e5a", "parents": [ "32a4330d4156e55a4888a201f484dbafed9504ed" ], "author": { "name": "Lee Schermerhorn", "email": "Lee.Schermerhorn@hp.com", "time": "Tue Oct 16 01:24:51 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Oct 16 09:42:54 2007 -0700" }, "message": "Mem Policy: add MPOL_F_MEMS_ALLOWED get_mempolicy() flag\n\nAllow an application to query the memories allowed by its context.\n\nUpdated numa_memory_policy.txt to mention that applications can use this to\nobtain allowed memories for constructing valid policies.\n\nTODO: update out-of-tree libnuma wrapper[s], or maybe add a new\nwrapper--e.g., numa_get_mems_allowed() ?\n\nAlso, update numa syscall man pages.\n\nTested with memtoy V\u003e\u003d0.13.\n\nSigned-off-by: Lee Schermerhorn \u003clee.schermerhorn@hp.com\u003e\nAcked-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nCc: Andi Kleen \u003cak@suse.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "c92ff1bde06f69d59b40f3194016aee51cc5da55", "tree": "d365a7723a05a073ed715c6f4e99363e27516d04", "parents": [ "c0bc9875b701c588e448302d41181995c21e8040" ], "author": { "name": "Martin Schwidefsky", "email": "schwidefsky@de.ibm.com", "time": "Tue Oct 16 01:24:43 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Oct 16 09:42:53 2007 -0700" }, "message": "move mm_struct and vm_area_struct\n\nMove the definitions of struct mm_struct and struct vma_area_struct to\ninclude/mm_types.h. This allows to define more function in asm/pgtable.h\nand friends with inline assemblies instead of macros. Compile tested on\ni386, powerpc, powerpc64, s390-32, s390-64 and x86_64.\n\n[aurelien@aurel32.net: build fix]\nSigned-off-by: Martin Schwidefsky \u003cschwidefsky@de.ibm.com\u003e\nSigned-off-by: Aurelien Jarno \u003caurelien@aurel32.net\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "c0bc9875b701c588e448302d41181995c21e8040", "tree": "c320855d4c04bd51ded6b4888bc5895ab539165f", "parents": [ "b55ed816235cf41c29159d22a4cdeec7deb5821c" ], "author": { "name": "Nick Piggin", "email": "npiggin@suse.de", "time": "Tue Oct 16 01:24:42 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Oct 16 09:42:53 2007 -0700" }, "message": "radix-tree: use indirect bit\n\nRather than sign direct radix-tree pointers with a special bit, sign the\nindirect one that hangs off the root. This means that, given a lookup_slot\noperation, the invalid result will be differentiated from the valid\n(previously, valid results could have the bit either set or clear).\n\nThis does not affect slot lookups which occur under lock -- they can never\nreturn an invalid result. Is needed in future for lockless pagecache.\n\nSigned-off-by: Nick Piggin \u003cnpiggin@suse.de\u003e\nAcked-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nCc: Hugh Dickins \u003chugh@veritas.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "557ed1fa2620dc119adb86b34c614e152a629a80", "tree": "d00b31a7f197583c2bd8fffa1fd135fbbb5d6abc", "parents": [ "aadb4bc4a1f9108c1d0fbd121827c936c2ed4217" ], "author": { "name": "Nick Piggin", "email": "npiggin@suse.de", "time": "Tue Oct 16 01:24:40 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Oct 16 09:42:53 2007 -0700" }, "message": "remove ZERO_PAGE\n\nThe commit b5810039a54e5babf428e9a1e89fc1940fabff11 contains the note\n\n A last caveat: the ZERO_PAGE is now refcounted and managed with rmap\n (and thus mapcounted and count towards shared rss). These writes to\n the struct page could cause excessive cacheline bouncing on big\n systems. There are a number of ways this could be addressed if it is\n an issue.\n\nAnd indeed this cacheline bouncing has shown up on large SGI systems.\nThere was a situation where an Altix system was essentially livelocked\ntearing down ZERO_PAGE pagetables when an HPC app aborted during startup.\nThis situation can be avoided in userspace, but it does highlight the\npotential scalability problem with refcounting ZERO_PAGE, and corner\ncases where it can really hurt (we don\u0027t want the system to livelock!).\n\nThere are several broad ways to fix this problem:\n1. add back some special casing to avoid refcounting ZERO_PAGE\n2. per-node or per-cpu ZERO_PAGES\n3. remove the ZERO_PAGE completely\n\nI will argue for 3. The others should also fix the problem, but they\nresult in more complex code than does 3, with little or no real benefit\nthat I can see.\n\nWhy? Inserting a ZERO_PAGE for anonymous read faults appears to be a\nfalse optimisation: if an application is performance critical, it would\nnot be doing many read faults of new memory, or at least it could be\nexpected to write to that memory soon afterwards. If cache or memory use\nis critical, it should not be working with a significant number of\nZERO_PAGEs anyway (a more compact representation of zeroes should be\nused).\n\nAs a sanity check -- mesuring on my desktop system, there are never many\nmappings to the ZERO_PAGE (eg. 2 or 3), thus memory usage here should not\nincrease much without it.\n\nWhen running a make -j4 kernel compile on my dual core system, there are\nabout 1,000 mappings to the ZERO_PAGE created per second, but about 1,000\nZERO_PAGE COW faults per second (less than 1 ZERO_PAGE mapping per second\nis torn down without being COWed). So removing ZERO_PAGE will save 1,000\npage faults per second when running kbuild, while keeping it only saves\nless than 1 page clearing operation per second. 1 page clear is cheaper\nthan a thousand faults, presumably, so there isn\u0027t an obvious loss.\n\nNeither the logical argument nor these basic tests give a guarantee of no\nregressions. However, this is a reasonable opportunity to try to remove\nthe ZERO_PAGE from the pagefault path. If it is found to cause regressions,\nwe can reintroduce it and just avoid refcounting it.\n\nThe /dev/zero ZERO_PAGE usage and TLB tricks also get nuked. I don\u0027t see\nmuch use to them except on benchmarks. All other users of ZERO_PAGE are\nconverted just to use ZERO_PAGE(0) for simplicity. We can look at\nreplacing them all and maybe ripping out ZERO_PAGE completely when we are\nmore satisfied with this solution.\n\nSigned-off-by: Nick Piggin \u003cnpiggin@suse.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus \"snif\" Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "aadb4bc4a1f9108c1d0fbd121827c936c2ed4217", "tree": "879b7c9ba11a65958e4477c563602e08d9e6635f", "parents": [ "57f6b96c09c30e444e0d3fc3080feba037657a7b" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Tue Oct 16 01:24:38 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Oct 16 09:42:53 2007 -0700" }, "message": "SLUB: direct pass through of page size or higher kmalloc requests\n\nThis gets rid of all kmalloc caches larger than page size. A kmalloc\nrequest larger than PAGE_SIZE \u003e 2 is going to be passed through to the page\nallocator. This works both inline where we will call __get_free_pages\ninstead of kmem_cache_alloc and in __kmalloc.\n\nkfree is modified to check if the object is in a slab page. If not then\nthe page is freed via the page allocator instead. Roughly similar to what\nSLOB does.\n\nAdvantages:\n- Reduces memory overhead for kmalloc array\n- Large kmalloc operations are faster since they do not\n need to pass through the slab allocator to get to the\n page allocator.\n- Performance increase of 10%-20% on alloc and 50% on free for\n PAGE_SIZEd allocations.\n SLUB must call page allocator for each alloc anyways since\n the higher order pages which that allowed avoiding the page alloc calls\n are not available in a reliable way anymore. So we are basically removing\n useless slab allocator overhead.\n- Large kmallocs yields page aligned object which is what\n SLAB did. Bad things like using page sized kmalloc allocations to\n stand in for page allocate allocs can be transparently handled and are not\n distinguishable from page allocator uses.\n- Checking for too large objects can be removed since\n it is done by the page allocator.\n\nDrawbacks:\n- No accounting for large kmalloc slab allocations anymore\n- No debugging of large kmalloc slab allocations.\n\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "57f6b96c09c30e444e0d3fc3080feba037657a7b", "tree": "4b62e2f63352b74d6c9dd1ed1142b971dcd207e3", "parents": [ "b2c3843b1e25e2c67347c4671f33fbe6f5067e6b" ], "author": { "name": "Fengguang Wu", "email": "wfg@mail.ustc.edu.cn", "time": "Tue Oct 16 01:24:37 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Oct 16 09:42:53 2007 -0700" }, "message": "filemap: convert some unsigned long to pgoff_t\n\nConvert some \u0027unsigned long\u0027 to pgoff_t.\n\nSigned-off-by: Fengguang Wu \u003cwfg@mail.ustc.edu.cn\u003e\nCc: Rusty Russell \u003crusty@rustcorp.com.au\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "535443f51543df61111bbd234300ae549d220448", "tree": "e9b022969776132b9fd3bde351673edc006a1bac", "parents": [ "7ff81078d8b9f3d05a27b7bd3786ffb1ef1b0d1f" ], "author": { "name": "Fengguang Wu", "email": "wfg@mail.ustc.edu.cn", "time": "Tue Oct 16 01:24:36 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Oct 16 09:42:52 2007 -0700" }, "message": "readahead: remove several readahead macros\n\nRemove VM_MAX_CACHE_HIT, MAX_RA_PAGES and MIN_RA_PAGES.\n\nSigned-off-by: Fengguang Wu \u003cwfg@mail.ustc.edu.cn\u003e\nCc: Rusty Russell \u003crusty@rustcorp.com.au\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "6df8ba4f8a4c4abca9ccad10441d0dddbdff301c", "tree": "6ac5cd48d3400a9d32f8affd31106f7942df9547", "parents": [ "f4e6b498d6e06742d72706ef50593a9c4dd72214" ], "author": { "name": "Fengguang Wu", "email": "wfg@mail.ustc.edu.cn", "time": "Tue Oct 16 01:24:33 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Oct 16 09:42:52 2007 -0700" }, "message": "radixtree: introduce radix_tree_next_hole()\n\nIntroduce radix_tree_next_hole(root, index, max_scan) to scan radix tree for\nthe first hole. It will be used in interleaved readahead.\n\nThe implementation is dumb and obviously correct. It can help debug(and\ndocument) the possible smart one in future.\n\nCc: Nick Piggin \u003cnickpiggin@yahoo.com.au\u003e\nSigned-off-by: Fengguang Wu \u003cwfg@mail.ustc.edu.cn\u003e\nCc: Rusty Russell \u003crusty@rustcorp.com.au\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "f4e6b498d6e06742d72706ef50593a9c4dd72214", "tree": "74a573302b2ea086c0d21907175be604f110f5b1", "parents": [ "0bb7ba6b9c358c12084a3cbc6ac08c8d1e973937" ], "author": { "name": "Fengguang Wu", "email": "wfg@mail.ustc.edu.cn", "time": "Tue Oct 16 01:24:33 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Oct 16 09:42:52 2007 -0700" }, "message": "readahead: combine file_ra_state.prev_index/prev_offset into prev_pos\n\nCombine the file_ra_state members\n\t\t\t\tunsigned long prev_index\n\t\t\t\tunsigned int prev_offset\ninto\n\t\t\t\tloff_t prev_pos\n\nIt is more consistent and better supports huge files.\n\nThanks to Peter for the nice proposal!\n\n[akpm@linux-foundation.org: fix shift overflow]\nCc: Peter Zijlstra \u003cpeterz@infradead.org\u003e\nSigned-off-by: Fengguang Wu \u003cwfg@mail.ustc.edu.cn\u003e\nCc: Rusty Russell \u003crusty@rustcorp.com.au\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "0bb7ba6b9c358c12084a3cbc6ac08c8d1e973937", "tree": "81dc745c660557af4d9ea8b9816846d0395ece20", "parents": [ "937085aa35cc873d427d250a1e304d641af24628" ], "author": { "name": "Fengguang Wu", "email": "wfg@mail.ustc.edu.cn", "time": "Tue Oct 16 01:24:32 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Oct 16 09:42:52 2007 -0700" }, "message": "readahead: mmap read-around simplification\n\nFold file_ra_state.mmap_hit into file_ra_state.mmap_miss and make it an int.\n\nSigned-off-by: Fengguang Wu \u003cwfg@mail.ustc.edu.cn\u003e\nCc: Rusty Russell \u003crusty@rustcorp.com.au\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "937085aa35cc873d427d250a1e304d641af24628", "tree": "99b0d2d9e6721a72e65b4cb5ad0fc30ec04f4aa2", "parents": [ "43fac94dd62667c83dd2daa5b7ac548512af780a" ], "author": { "name": "Fengguang Wu", "email": "wfg@mail.ustc.edu.cn", "time": "Tue Oct 16 01:24:31 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Oct 16 09:42:52 2007 -0700" }, "message": "readahead: compacting file_ra_state\n\nUse \u0027unsigned int\u0027 instead of \u0027unsigned long\u0027 for readahead sizes.\n\nThis helps reduce memory consumption on 64bit CPU when a lot of files are\nopened.\n\nCC: Andi Kleen \u003candi@firstfloor.org\u003e\nSigned-off-by: Fengguang Wu \u003cwfg@mail.ustc.edu.cn\u003e\nCc: Rusty Russell \u003crusty@rustcorp.com.au\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "39e91e433169bdfd5a312654e5988986662afd7f", "tree": "65e3e1fb9cc506b59be14cf58d3fb0d309be3119", "parents": [ "dcca2bde4f86a14d3291660bede8f1844fe2b3df" ], "author": { "name": "Jesper Juhl", "email": "jesper.juhl@gmail.com", "time": "Tue Oct 16 01:24:30 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Oct 16 09:42:52 2007 -0700" }, "message": "Clean up duplicate includes in include/linux/memory_hotplug.h\n\nThis patch cleans up duplicate includes in\n\tinclude/linux/memory_hotplug.h\n\nSigned-off-by: Jesper Juhl \u003cjesper.juhl@gmail.com\u003e\nAcked-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": "29c71111d0557385328211b130246a90f9223b46", "tree": "5588a49ee548d38e15bd7541cec29e069b9e457c", "parents": [ "8f6aac419bd590f535fb110875a51f7db2b62b5b" ], "author": { "name": "Andy Whitcroft", "email": "apw@shadowen.org", "time": "Tue Oct 16 01:24:14 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Oct 16 09:42:51 2007 -0700" }, "message": "vmemmap: generify initialisation via helpers\n\nConvert the common vmemmap population into initialisation helpers for use by\narchitecture vmemmap populators. All architecture implementing the\nSPARSEMEM_VMEMMAP variant supply an architecture specific vmemmap_populate()\ninitialiser, which may make use of the helpers.\n\nThis allows us to clean up and remove the initialisation Kconfig entries.\nWith this patch there is a single SPARSEMEM_VMEMMAP_ENABLE Kconfig option to\nindicate use of that variant.\n\nSigned-off-by: Andy Whitcroft \u003capw@shadowen.org\u003e\nAcked-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "8f6aac419bd590f535fb110875a51f7db2b62b5b", "tree": "64e73e9f7a4b5a68648a2b4b16e66307c3d8d3cf", "parents": [ "540557b9439ec19668553830c90222f9fb0c2e95" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Tue Oct 16 01:24:13 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Oct 16 09:42:51 2007 -0700" }, "message": "Generic Virtual Memmap support for SPARSEMEM\n\nSPARSEMEM is a pretty nice framework that unifies quite a bit of code over all\nthe arches. It would be great if it could be the default so that we can get\nrid of various forms of DISCONTIG and other variations on memory maps. So far\nwhat has hindered this are the additional lookups that SPARSEMEM introduces\nfor virt_to_page and page_address. This goes so far that the code to do this\nhas to be kept in a separate function and cannot be used inline.\n\nThis patch introduces a virtual memmap mode for SPARSEMEM, in which the memmap\nis mapped into a virtually contigious area, only the active sections are\nphysically backed. This allows virt_to_page page_address and cohorts become\nsimple shift/add operations. No page flag fields, no table lookups, nothing\ninvolving memory is required.\n\nThe two key operations pfn_to_page and page_to_page become:\n\n #define __pfn_to_page(pfn) (vmemmap + (pfn))\n #define __page_to_pfn(page) ((page) - vmemmap)\n\nBy having a virtual mapping for the memmap we allow simple access without\nwasting physical memory. As kernel memory is typically already mapped 1:1\nthis introduces no additional overhead. The virtual mapping must be big\nenough to allow a struct page to be allocated and mapped for all valid\nphysical pages. This vill make a virtual memmap difficult to use on 32 bit\nplatforms that support 36 address bits.\n\nHowever, if there is enough virtual space available and the arch already maps\nits 1-1 kernel space using TLBs (f.e. true of IA64 and x86_64) then this\ntechnique makes SPARSEMEM lookups even more efficient than CONFIG_FLATMEM.\nFLATMEM needs to read the contents of the mem_map variable to get the start of\nthe memmap and then add the offset to the required entry. vmemmap is a\nconstant to which we can simply add the offset.\n\nThis patch has the potential to allow us to make SPARSMEM the default (and\neven the only) option for most systems. It should be optimal on UP, SMP and\nNUMA on most platforms. Then we may even be able to remove the other memory\nmodels: FLATMEM, DISCONTIG etc.\n\n[apw@shadowen.org: config cleanups, resplit code etc]\n[kamezawa.hiroyu@jp.fujitsu.com: Fix sparsemem_vmemmap init]\n[apw@shadowen.org: vmemmap: remove excess debugging]\n[apw@shadowen.org: simplify initialisation code and reduce duplication]\n[apw@shadowen.org: pull out the vmemmap code into its own file]\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nSigned-off-by: Andy Whitcroft \u003capw@shadowen.org\u003e\nAcked-by: Mel Gorman \u003cmel@csn.ul.ie\u003e\nCc: \"Luck, Tony\" \u003ctony.luck@intel.com\u003e\nCc: Andi Kleen \u003cak@suse.de\u003e\nCc: \"David S. Miller\" \u003cdavem@davemloft.net\u003e\nCc: Paul Mackerras \u003cpaulus@samba.org\u003e\nCc: Benjamin Herrenschmidt \u003cbenh@kernel.crashing.org\u003e\nCc: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nSigned-off-by: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@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": "540557b9439ec19668553830c90222f9fb0c2e95", "tree": "07dfa0e88580d4101dbb11ebc59348233e18b2f0", "parents": [ "cd881a6b22902b356cacf8fd2e4e895871068eec" ], "author": { "name": "Andy Whitcroft", "email": "apw@shadowen.org", "time": "Tue Oct 16 01:24:11 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Oct 16 09:42:51 2007 -0700" }, "message": "sparsemem: record when a section has a valid mem_map\n\nWe have flags to indicate whether a section actually has a valid mem_map\nassociated with it. This is never set and we rely solely on the present bit\nto indicate a section is valid. By definition a section is not valid if it\nhas no mem_map and there is a window during init where the present bit is set\nbut there is no mem_map, during which pfn_valid() will return true\nincorrectly.\n\nUse the existing SECTION_HAS_MEM_MAP flag to indicate the presence of a valid\nmem_map. Switch valid_section{,_nr} and pfn_valid() to this bit. Add a new\npresent_section{,_nr} and pfn_present() interfaces for those users who care to\nknow that a section is going to be valid.\n\n[akpm@linux-foundation.org: coding-syle fixes]\nSigned-off-by: Andy Whitcroft \u003capw@shadowen.org\u003e\nAcked-by: Mel Gorman \u003cmel@csn.ul.ie\u003e\nCc: Christoph Lameter \u003cclameter@sgi.com\u003e\nCc: \"Luck, Tony\" \u003ctony.luck@intel.com\u003e\nCc: Andi Kleen \u003cak@suse.de\u003e\nCc: \"David S. Miller\" \u003cdavem@davemloft.net\u003e\nCc: Paul Mackerras \u003cpaulus@samba.org\u003e\nCc: Benjamin Herrenschmidt \u003cbenh@kernel.crashing.org\u003e\nCc: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@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": "b3b708fa2780cd2b5d8266a8f0c3a1cab364d4d2", "tree": "af7c490d02118c59bf17cb0c3e055e149f38f147", "parents": [ "aa5346a2126ea65e8ef04eebea0f2481f701bdb8" ], "author": { "name": "Guennadi Liakhovetski", "email": "g.liakhovetski@gmx.de", "time": "Tue Oct 16 01:24:02 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Oct 16 09:42:50 2007 -0700" }, "message": "wake up from a serial port\n\nEnable wakeup from serial ports, make it run-time configurable over sysfs,\ne.g.,\n\necho enabled \u003e /sys/devices/platform/serial8250.0/tty/ttyS0/power/wakeup\n\nRequires\n\n# CONFIG_SYSFS_DEPRECATED is not set\n\nFollowing suggestions from Alan and Russell moved the may_wake_up checks\nto serial_core.c. This time actually tested - it does even work. Could\nsomeone, please, verify, that put_device after device_find_child is\ncorrect?\n\nAlso would be nice to test with a Natsemi UART, that can wake up the system,\nif such systems exist.\n\nFor this you just have to apply the patch below, issue the above \"echo\"\ncommand to one of your Natsemi port, suspend and resume your system, and\nverify that your Natsemi port still works. If you are actually capable of\nwaking up the system from that port, would be nice to test that as well.\n\nSigned-off-by: Guennadi Liakhovetski \u003cg.liakhovetski@gmx.de\u003e\nCc: Alan Cox \u003calan@lxorguk.ukuu.org.uk\u003e\nCc: Russell King \u003crmk@arm.linux.org.uk\u003e\nCc: Kay Sievers \u003ckay.sievers@vrfy.org\u003e\nCc: Greg KH \u003cgreg@kroah.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "aa5346a2126ea65e8ef04eebea0f2481f701bdb8", "tree": "a7d59e9cc61482d379baa676f9455c29529fa849", "parents": [ "bf0df636e5ddf43cbacff8435962ee8aa40f563e" ], "author": { "name": "Guennadi Liakhovetski", "email": "g.liakhovetski@gmx.de", "time": "Tue Oct 16 01:24:01 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Oct 16 09:42:50 2007 -0700" }, "message": "provide stubs for enable_irq_wake() and disable_irq_wake()\n\nProvide {enable,disable}_irq_wakeup dummies for undefined\ncross-compilers for platforms without CONFIG_GENERIC_IRQ.\n\nNeeded by wake-up-from-a-serial-port.patch\n\nSigned-off-by: Guennadi Liakhovetski \u003cg.liakhovetski@gmx.de\u003e\nCc: Thomas Gleixner \u003ctglx@linutronix.de\u003e\nCc: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "bf0df636e5ddf43cbacff8435962ee8aa40f563e", "tree": "5bbf1cc53eed746e96ebc03017da1986de120a16", "parents": [ "7201863ca7a97e83daea1ea2755750a256245600" ], "author": { "name": "Alan Cox", "email": "alan@lxorguk.ukuu.org.uk", "time": "Tue Oct 16 01:24:00 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Oct 16 09:42:50 2007 -0700" }, "message": "8250_pci: Autodetect mainpine cards\n\nAdd support for a whole range of boards. Some are partly autodetected but\nnot fully correctly others (PCI Express notably) not at all. Stick all\nthe right entries in.\n\nThanks to Mainpine for information and testing.\n\nSigned-off-by: Alan Cox \u003calan@redhat.com\u003e\nCc: Russell King \u003crmk@arm.linux.org.uk\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "32e8f70230c0c417490787b3f48b6ed6c48e7ec9", "tree": "54ef9f6c8960ab2a9634d0d82d69d6049bc6f3fb", "parents": [ "64da82efae0d7b5f7c478021840fd329f76d965d" ], "author": { "name": "James Bottomley", "email": "James.Bottomley@SteelEye.com", "time": "Tue Oct 16 01:23:55 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Oct 16 09:42:50 2007 -0700" }, "message": "introduce DMA_MASK_NONE as a signal for unable to do DMA\n\nSome devices are incapable of DMA and need to be recognised as such.\nIntroduce a NONE dma mask to facilitate this plus an inline function:\nis_device_dma_capable() to check this.\n\nSigned-off-by: James Bottomley \u003cJames.Bottomley@SteelEye.com\u003e\nCc: Andi Kleen \u003candi@firstfloor.org\u003e\nCc: Alan Cox \u003calan@lxorguk.ukuu.org.uk\u003e\nCc: Tejun Heo \u003chtejun@gmail.com\u003e\nCc: Natalie Protasevich \u003cprotasnb@gmail.com\u003e\nCc: Jeff Garzik \u003cjgarzik@pobox.com\u003e\nCc: Dominik Brodowski \u003clinux@dominikbrodowski.net\u003e\nCc: Russell King \u003crmk@arm.linux.org.uk\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "0322a2b84096270c238da45f444bd3c9eb6f5e9c", "tree": "a529c4f512de3867f7c2373d1cc7f3171673ac66", "parents": [ "bfe8df3d314bddf30758bd738e0087e80964760c" ], "author": { "name": "Ralf Baechle", "email": "ralf@linux-mips.org", "time": "Tue Oct 16 01:23:47 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Oct 16 09:42:49 2007 -0700" }, "message": "Add assembler equivalents to __init{,date}_refok\n\nI need __INIT_REFOK to fix a MODPOST warning for a few MIPS configs which\nhave to call init code from .text very early in the game due to bootloader\nissues. __INITDATA_REFOK is just for consistency.\n\nSigned-off-by: Ralf Baechle \u003cralf@linux-mips.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "bfe8df3d314bddf30758bd738e0087e80964760c", "tree": "d04db4fb2592e2d416073681903f05f5b30f204b", "parents": [ "1bcf548293aef19b0797348332cf1dfbf2116cef" ], "author": { "name": "Randy Dunlap", "email": "rdunlap@xenotime.net", "time": "Tue Oct 16 01:23:46 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Oct 16 09:42:49 2007 -0700" }, "message": "slow down printk during boot\n\nOptionally add a boot delay after each kernel printk() call, crudely\nmeasured in milliseconds, with a maximum delay of 10 seconds per printk.\n\nEnable CONFIG_BOOT_PRINTK_DELAY\u003dy and then add (e.g.):\n\"lpj\u003dloops_per_jiffy boot_delay\u003d100\"\nto the kernel command line.\n\nIt has been useful in cases like \"during boot, my machine just reboots or the\nscreen goes black\" by slowing down printk, (and adding initcall_debug), we can\nusually see the last thing that happened before the lights went out which is\nusually a valuable clue.\n\n[akpm@linux-foundation.org: not all architectures implement CONFIG_HZ]\n[akpm@linux-foundation.org: fix lots of stuff]\n[bunk@stusta.de: kernel/printk.c: make 2 variables static]\n[heiko.carstens@de.ibm.com: fix slow down printk on boot compile error]\nSigned-off-by: Randy Dunlap \u003crdunlap@xenotime.net\u003e\nSigned-off-by: Dave Jones \u003cdavej@redhat.com\u003e\nSigned-off-by: Adrian Bunk \u003cbunk@stusta.de\u003e\nSigned-off-by: Heiko Carstens \u003cheiko.carstens@de.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": "b0c813ceee8963790bebe73956574336604ae574", "tree": "6873d84bcedb3454ddf1da1aa0821b4e84b32c27", "parents": [ "8259980ebcecd8096a04cc43c1c1d72e1c0ed165" ], "author": { "name": "Timur Tabi", "email": "timur@freescale.com", "time": "Tue Jul 31 18:18:44 2007 +0200" }, "committer": { "name": "Jaroslav Kysela", "email": "perex@perex.cz", "time": "Tue Oct 16 15:58:19 2007 +0200" }, "message": "[ALSA] ASoC CS4270 codec device driver\n\nThis patch adds ALSA SoC support for the Cirrus Logic CS4270 codec. The\nfollowing features are suppored:\n1) Stand-alone and software mode\n2) Software mode via I2C only\n3) Master mode, not Slave\n4) No power management\n\nSigned-off-by: Timur Tabi \u003ctimur@freescale.com\u003e\nSigned-off-by: Takashi Iwai \u003ctiwai@suse.de\u003e\nSigned-off-by: Jaroslav Kysela \u003cperex@suse.cz\u003e\n" }, { "commit": "eafe57084786d5711e434165297f13864697f9f9", "tree": "a3b6a8cd16caf2396917cea765f1c35f478c99bb", "parents": [ "3b0a899ca0fca7801127757cfaafb4d8671793f0" ], "author": { "name": "Hans-Christian Egtvedt", "email": "hcegtvedt@atmel.com", "time": "Mon Jul 23 16:01:38 2007 +0200" }, "committer": { "name": "Jaroslav Kysela", "email": "perex@perex.cz", "time": "Tue Oct 16 15:57:50 2007 +0200" }, "message": "[ALSA] ALSA sound driver for the AT73C213 DAC using Atmel SSC driver\n\nThis patch adds support for the AT73C213 DAC using the misc Atmel SSC driver in\nI2S mode. The driver also requires a SPI to setup the registers and control\nvolume.\nIt has been tested with an AT32AP7000 on the ATSTK1000 development board. The\ndriver should also work with any Atmel device with an SSC module supported by\nthe Atmel SSC driver (atmel-ssc).\nThe atmel-ssc driver is just submitted to the Linux kernel. Please see mail\nthread http://lkml.org/lkml/2007/7/16/32\n\nSigned-off-by: Hans-Christian Egtvedt \u003chcegtvedt@atmel.com\u003e\nSigned-off-by: Takashi Iwai \u003ctiwai@suse.de\u003e\nSigned-off-by: Jaroslav Kysela \u003cperex@suse.cz\u003e\n" }, { "commit": "55c16a70041ba55e235c5944dccb9c1de0dd3ca6", "tree": "e48c1d9943fc52329cae1656ca59d24751dd9b98", "parents": [ "ba2da2f8d61a9d2e24754c6311a4ab6a5e70060a" ], "author": { "name": "Jens Axboe", "email": "jens.axboe@oracle.com", "time": "Wed Jul 25 08:13:56 2007 +0200" }, "committer": { "name": "Jens Axboe", "email": "jens.axboe@oracle.com", "time": "Tue Oct 16 11:21:00 2007 +0200" }, "message": "IDE: sg chaining support\n\nAcked-by: Bartlomiej Zolnierkiewicz \u003cbzolnier@gmail.com\u003e\nSigned-off-by: Jens Axboe \u003cjens.axboe@oracle.com\u003e\n" }, { "commit": "ba2da2f8d61a9d2e24754c6311a4ab6a5e70060a", "tree": "380094ba1136f53bdde54de7e79d13383051a79f", "parents": [ "ed17b031e0aa83177c38ad48c3b9fcc3895653f6" ], "author": { "name": "Jens Axboe", "email": "jens.axboe@oracle.com", "time": "Tue Jul 24 14:42:11 2007 +0200" }, "committer": { "name": "Jens Axboe", "email": "jens.axboe@oracle.com", "time": "Tue Oct 16 11:21:00 2007 +0200" }, "message": "i2o: sg chaining support\n\nAcked-by: Alan Cox \u003calan@redhat.com\u003e\nSigned-off-by: Jens Axboe \u003cjens.axboe@oracle.com\u003e\n" }, { "commit": "8726021626780a73e795c9b939e1ee49ac8c9136", "tree": "7f42d69578ab8f286a4b66180c95864a60e95690", "parents": [ "a8474ce23a73185dd2bae4c884b1716474032d31" ], "author": { "name": "Jens Axboe", "email": "jens.axboe@oracle.com", "time": "Tue Oct 16 11:14:12 2007 +0200" }, "committer": { "name": "Jens Axboe", "email": "jens.axboe@oracle.com", "time": "Tue Oct 16 11:14:12 2007 +0200" }, "message": "libata: convert to using sg helpers\n\nThis converts libata to using the sg helpers for looking up sg\nelements, instead of doing it manually.\n\nSigned-off-by: Jens Axboe \u003cjens.axboe@oracle.com\u003e\n" }, { "commit": "70eb8040dc81212c884a464b75e37dca8014f3ad", "tree": "79d23b3ef2635032e6060dfa9b06e4f885a8cb10", "parents": [ "c6132da1704be252ee6c923f47501083d835c238" ], "author": { "name": "Jens Axboe", "email": "jens.axboe@oracle.com", "time": "Mon Jul 16 21:17:16 2007 +0200" }, "committer": { "name": "Jens Axboe", "email": "jens.axboe@oracle.com", "time": "Tue Oct 16 11:08:51 2007 +0200" }, "message": "Add chained sg support to linux/scatterlist.h\n\nThe core of the patch - allow the last sg element in a scatterlist\ntable to point to the start of a new table. We overload the LSB of\nthe page pointer to indicate whether this is a valid sg entry, or\nmerely a link to the next list.\n\nIncludes a fix from Bartlomiej Zolnierkiewicz \u003cbzolnier@gmail.com\u003e\ncorrecting the ifdef ARCH_HAS_SG_CHAIN guarding sg_last().\n\nSigned-off-by: Jens Axboe \u003cjens.axboe@oracle.com\u003e\n" }, { "commit": "96b418c960af0d5c7185ff5c4af9376eb37ac9d3", "tree": "c909c9d317262cadb37357e0e13d7c2922cfebc0", "parents": [ "ab83407e9ee35a4972457aa487be6a7a21afd715" ], "author": { "name": "Jens Axboe", "email": "jens.axboe@oracle.com", "time": "Wed May 09 09:02:57 2007 +0200" }, "committer": { "name": "Jens Axboe", "email": "jens.axboe@oracle.com", "time": "Tue Oct 16 11:07:10 2007 +0200" }, "message": "Add sg helpers for iterating over a scatterlist table\n\nFirst step to being able to change the scatterlist setup without\nhaving to modify drivers (a lot :-)\n\nSigned-off-by: Jens Axboe \u003cjens.axboe@oracle.com\u003e\n" }, { "commit": "bb879463b5346302a3891ebb7406247c53cebac1", "tree": "0802c807c39b5a9c41d8bf0e618f9910b0e028d5", "parents": [ "fd5d806266935179deda1502101624832eacd01f" ], "author": { "name": "Adrian Bunk", "email": "bunk@kernel.org", "time": "Fri Sep 14 10:02:06 2007 +0200" }, "committer": { "name": "Jens Axboe", "email": "jens.axboe@oracle.com", "time": "Tue Oct 16 11:05:06 2007 +0200" }, "message": "remove ide_get_error_location()\n\nSigned-off-by: Adrian Bunk \u003cbunk@kernel.org\u003e\nSigned-off-by: Jens Axboe \u003cjens.axboe@oracle.com\u003e\n" }, { "commit": "fd5d806266935179deda1502101624832eacd01f", "tree": "b0d01c2ed7d754f2a6daef6c77d108a81d8a470e", "parents": [ "bf2de6f5a4faf0197268f18d08969b003b87b6e8" ], "author": { "name": "Jens Axboe", "email": "jens.axboe@oracle.com", "time": "Tue Oct 16 11:05:02 2007 +0200" }, "committer": { "name": "Jens Axboe", "email": "jens.axboe@oracle.com", "time": "Tue Oct 16 11:05:02 2007 +0200" }, "message": "block: convert blkdev_issue_flush() to use empty barriers\n\nThen we can get rid of -\u003eissue_flush_fn() and all the driver private\nimplementations of that.\n\nSigned-off-by: Jens Axboe \u003cjens.axboe@oracle.com\u003e\n" }, { "commit": "bf2de6f5a4faf0197268f18d08969b003b87b6e8", "tree": "16830a15a7effea352445a7aba5dbb433314d3eb", "parents": [ "c07e2b41291853b19fff11ceee3657df252a4e42" ], "author": { "name": "Jens Axboe", "email": "jens.axboe@oracle.com", "time": "Thu Sep 27 13:01:25 2007 +0200" }, "committer": { "name": "Jens Axboe", "email": "jens.axboe@oracle.com", "time": "Tue Oct 16 11:03:56 2007 +0200" }, "message": "block: Initial support for data-less (or empty) barrier support\n\nThis implements functionality to pass down or insert a barrier\nin a queue, without having data attached to it. The -\u003eprepare_flush_fn()\ninfrastructure from data barriers are reused to provide this\nfunctionality.\n\nSigned-off-by: Jens Axboe \u003cjens.axboe@oracle.com\u003e\n" }, { "commit": "a0cd128542cd9c67f27458a08e989db486a293ce", "tree": "bc4ca6dd3cbfa230de486d79480f7a99bbfb6232", "parents": [ "992c5ddaf1b8b85d2252339c4c89adf7469c09ca" ], "author": { "name": "Jens Axboe", "email": "jens.axboe@oracle.com", "time": "Fri Sep 21 10:41:07 2007 +0200" }, "committer": { "name": "Jens Axboe", "email": "jens.axboe@oracle.com", "time": "Tue Oct 16 11:03:53 2007 +0200" }, "message": "block: add end_queued_request() and end_dequeued_request() helpers\n\nWe can use this helper in the elevator core for BLKPREP_KILL, and it\u0027ll\nalso be useful for the empty barrier patch.\n\nSigned-off-by: Jens Axboe \u003cjens.axboe@oracle.com\u003e\n" }, { "commit": "e6716b87d5c9edf19c711212785cd30c6ec21868", "tree": "0059d64ffe0828252b3639ead94a47122eb9f135", "parents": [ "fd39c86b3d8910fbafe41207135c1d72bc895614" ], "author": { "name": "Randy Dunlap", "email": "randy.dunlap@oracle.com", "time": "Mon Oct 15 17:30:19 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Mon Oct 15 17:56:36 2007 -0700" }, "message": "docbook: fix filesystems content\n\nFix filesystems docbook warnings.\n\nWarning(linux-2.6.23-git8//fs/debugfs/file.c:241): No description found for parameter \u0027name\u0027\nWarning(linux-2.6.23-git8//fs/debugfs/file.c:241): No description found for parameter \u0027mode\u0027\nWarning(linux-2.6.23-git8//fs/debugfs/file.c:241): No description found for parameter \u0027parent\u0027\nWarning(linux-2.6.23-git8//fs/debugfs/file.c:241): No description found for parameter \u0027value\u0027\nWarning(linux-2.6.23-git8//include/linux/jbd.h:404): No description found for parameter \u0027h_lockdep_map\u0027\n\nSigned-off-by: Randy Dunlap \u003crandy.dunlap@oracle.com\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "fd39c86b3d8910fbafe41207135c1d72bc895614", "tree": "f579ddb40c02193ca5792bc0db7a232727902dc3", "parents": [ "c5d0e6a0d225c03b59a0a70f940e439085235ba2" ], "author": { "name": "Randy Dunlap", "email": "randy.dunlap@oracle.com", "time": "Mon Oct 15 17:30:02 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Mon Oct 15 17:56:36 2007 -0700" }, "message": "docbook: fix usb content\n\nFix USB docbook warnings.\n\nWarning(linux-2.6.23-git8//include/linux/usb/gadget.h:487): No description found for parameter \u0027g\u0027\nWarning(linux-2.6.23-git8//include/linux/usb/gadget.h:506): No description found for parameter \u0027g\u0027\n\nWarning(linux-2.6.23-git8//drivers/usb/core/hub.c:1416): No description found for parameter \u0027usb_dev\u0027\n\nSigned-off-by: Randy Dunlap \u003crandy.dunlap@oracle.com\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "65a6ec0d72a07f16719e9b7a96e1c4bae044b591", "tree": "344e03a5039a44982c1b78d6113633b21b434820", "parents": [ "541010e4b8921cd781ff02ae68028501457045b6", "0181b61a988424b5cc44fe09e6968142359c815e" ], "author": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Mon Oct 15 16:08:50 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Mon Oct 15 16:08:50 2007 -0700" }, "message": "Merge branch \u0027devel\u0027 of master.kernel.org:/home/rmk/linux-2.6-arm\n\n* \u0027devel\u0027 of master.kernel.org:/home/rmk/linux-2.6-arm: (95 commits)\n [ARM] 4578/1: CM-x270: PCMCIA support\n [ARM] 4577/1: ITE 8152 PCI bridge support\n [ARM] 4576/1: CM-X270 machine support\n [ARM] pxa: Avoid pxa_gpio_mode() in gpio_direction_{in,out}put()\n [ARM] pxa: move pxa_set_mode() from pxa2xx_mainstone.c to mainstone.c\n [ARM] pxa: move pxa_set_mode() from pxa2xx_lubbock.c to lubbock.c\n [ARM] pxa: Make cpu_is_pxaXXX dependent on configuration symbols\n [ARM] pxa: PXA3xx base support\n [NET] smc91x: fix PXA DMA support code\n [SERIAL] Fix console initialisation ordering\n [ARM] pxa: tidy up arch/arm/mach-pxa/Makefile\n [ARM] Update arch/arm/Kconfig for drivers/Kconfig changes\n [ARM] 4600/1: fix kernel build failure with build-id-supporting binutils\n [ARM] 4599/1: Preserve ATAG list for use with kexec (2.6.23)\n [ARM] Rename consistent_sync() as dma_cache_maint()\n [ARM] 4572/1: ep93xx: add cirrus logic edb9307 support\n [ARM] 4596/1: S3C2412: Correct IRQs for SDI+CF and add decoding support\n [ARM] 4595/1: ns9xxx: define registers as void __iomem * instead of volatile u32\n [ARM] 4594/1: ns9xxx: use the new gpio functions\n [ARM] 4593/1: ns9xxx: implement generic clockevents\n ...\n" }, { "commit": "541010e4b8921cd781ff02ae68028501457045b6", "tree": "58bd529d4c6e69899a0aa20afa2d7f1c23326417", "parents": [ "e457f790d8b05977853aa238bbc667b3bb375671", "5e7fc436426b1f9e106f511a049de91c82ec2c53" ], "author": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Mon Oct 15 16:07:40 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Mon Oct 15 16:07:40 2007 -0700" }, "message": "Merge branch \u0027locks\u0027 of git://linux-nfs.org/~bfields/linux\n\n* \u0027locks\u0027 of git://linux-nfs.org/~bfields/linux:\n nfsd: remove IS_ISMNDLCK macro\n Rework /proc/locks via seq_files and seq_list helpers\n fs/locks.c: use list_for_each_entry() instead of list_for_each()\n NFS: clean up explicit check for mandatory locks\n AFS: clean up explicit check for mandatory locks\n 9PFS: clean up explicit check for mandatory locks\n GFS2: clean up explicit check for mandatory locks\n Cleanup macros for distinguishing mandatory locks\n Documentation: move locks.txt in filesystems/\n locks: add warning about mandatory locking races\n Documentation: move mandatory locking documentation to filesystems/\n locks: Fix potential OOPS in generic_setlease()\n Use list_first_entry in locks_wake_up_blocks\n locks: fix flock_lock_file() comment\n Memory shortage can result in inconsistent flocks state\n locks: kill redundant local variable\n locks: reverse order of posix_locks_conflict() arguments\n" } ], "next": "a52cefc80fc92981592c688d1c8067442afe4cec" }