)]}' { "log": [ { "commit": "49da97dcb6b00a6869bbc3fa6ec7fdfd8a6e41a3", "tree": "8d558ccfa1cd3c7c20bf0822250a4631d00519c4", "parents": [ "8649a230e33320b00f778a6f7c17a2764e844730" ], "author": { "name": "Shawn Guo", "email": "shawn.guo@freescale.com", "time": "Wed Jan 05 21:13:11 2011 +0000" }, "committer": { "name": "David S. Miller", "email": "davem@davemloft.net", "time": "Sun Jan 09 15:42:55 2011 -0800" }, "message": "net/fec: add mac field into platform data and consolidate fec_get_mac\n\nAdd mac field into fec_platform_data and consolidate function\nfec_get_mac to get mac address in following order.\n\n 1) module parameter via kernel command line fec.macaddr\u003d0x00,0x04,...\n 2) from flash in case of CONFIG_M5272 or fec_platform_data mac\n field for others, which typically have mac stored in fuse\n 3) fec mac address registers set by bootloader\n\nSigned-off-by: Shawn Guo \u003cshawn.guo@freescale.com\u003e\nSigned-off-by: David S. Miller \u003cdavem@davemloft.net\u003e\n" }, { "commit": "8649a230e33320b00f778a6f7c17a2764e844730", "tree": "0384070956fcf781dd83af4543bb607fc1651b8d", "parents": [ "862f0982eadcea0e114576c57ea426d3d51a69a6" ], "author": { "name": "Shawn Guo", "email": "shawn.guo@freescale.com", "time": "Wed Jan 05 21:13:10 2011 +0000" }, "committer": { "name": "David S. Miller", "email": "davem@davemloft.net", "time": "Sun Jan 09 15:42:55 2011 -0800" }, "message": "net/fec: remove the use of \"index\" which is legacy\n\nThe \"index\" becomes legacy since fep-\u003epdev-\u003eid starts working\nto identify the instance.\n\nMoreover, the call of fec_enet_init(ndev, 0) always passes 0\nto fep-\u003eindex. This makes the following code in fec_get_mac buggy.\n\n\t/* Adjust MAC if using default MAC address */\n\tif (iap \u003d\u003d fec_mac_default)\n\t\tdev-\u003edev_addr[ETH_ALEN-1] \u003d fec_mac_default[ETH_ALEN-1] + fep-\u003eindex;\n\nIt may be the time to remove \"index\" and use fep-\u003epdev-\u003eid instead.\n\nSigned-off-by: Shawn Guo \u003cshawn.guo@freescale.com\u003e\nSigned-off-by: David S. Miller \u003cdavem@davemloft.net\u003e\n" }, { "commit": "862f0982eadcea0e114576c57ea426d3d51a69a6", "tree": "83de79f6fe540ca72457200070e2badaebd6214c", "parents": [ "0c21e3aaf6ae85bee804a325aa29c325209180fd" ], "author": { "name": "Shawn Guo", "email": "shawn.guo@freescale.com", "time": "Wed Jan 05 21:13:09 2011 +0000" }, "committer": { "name": "David S. Miller", "email": "davem@davemloft.net", "time": "Sun Jan 09 15:42:54 2011 -0800" }, "message": "net/fec: fix MMFR_OP type in fec_enet_mdio_write\n\nFEC_MMFR_OP_WRITE should be used than FEC_MMFR_OP_READ in\na mdio write operation.\n\nIt\u0027s probably a typo introduced by commit:\n\ne6b043d512fa8d9a3801bf5d72bfa3b8fc3b3cc8\nnetdev/fec.c: add phylib supporting to enable carrier detection (v2)\n\nSigned-off-by: Shawn Guo \u003cshawn.guo@freescale.com\u003e\nSigned-off-by: David S. Miller \u003cdavem@davemloft.net\u003e\n" }, { "commit": "0c21e3aaf6ae85bee804a325aa29c325209180fd", "tree": "81c5d698e1c40cc8f473b21c5587a34598754a64", "parents": [ "021db8e2bde53024a163fb4417a185de46fe77aa", "b2837fcf4994e699a4def002e26f274d95b387c1" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Fri Jan 07 17:16:27 2011 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Fri Jan 07 17:16:27 2011 -0800" }, "message": "Merge branch \u0027for-next\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/hch/hfsplus\n\n* \u0027for-next\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/hch/hfsplus:\n hfsplus: %L-to-%ll, macro correction, and remove unneeded braces\n hfsplus: spaces/indentation clean-up\n hfsplus: C99 comments clean-up\n hfsplus: over 80 character lines clean-up\n hfsplus: fix an artifact in ioctl flag checking\n hfsplus: flush disk caches in sync and fsync\n hfsplus: optimize fsync\n hfsplus: split up inode flags\n hfsplus: write up fsync for directories\n hfsplus: simplify fsync\n hfsplus: avoid useless work in hfsplus_sync_fs\n hfsplus: make sure sync writes out all metadata\n hfsplus: use raw bio access for partition tables\n hfsplus: use raw bio access for the volume headers\n hfsplus: always use hfsplus_sync_fs to write the volume header\n hfsplus: silence a few debug printks\n hfsplus: fix option parsing during remount\n\nFix up conflicts due to VFS changes in fs/hfsplus/{hfsplus_fs.h,unicode.c}\n" }, { "commit": "021db8e2bde53024a163fb4417a185de46fe77aa", "tree": "098a28bd2414ea2622493a1736a677dab5085dfc", "parents": [ "72eb6a791459c87a0340318840bb3bd9252b627b", "07fe0351702b6f0c9749e80cdbcb758686b0fe9b" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Fri Jan 07 17:08:46 2011 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Fri Jan 07 17:08:46 2011 -0800" }, "message": "Merge branch \u0027next-spi\u0027 of git://git.secretlab.ca/git/linux-2.6\n\n* \u0027next-spi\u0027 of git://git.secretlab.ca/git/linux-2.6: (77 commits)\n spi/omap: Fix DMA API usage in OMAP MCSPI driver\n spi/imx: correct the test on platform_get_irq() return value\n spi/topcliff: Typo fix threhold to threshold\n spi/dw_spi Typo change diable to disable.\n spi/fsl_espi: change the read behaviour of the SPIRF\n spi/mpc52xx-psc-spi: move probe/remove to proper sections\n spi/dw_spi: add DMA support\n spi/dw_spi: change to EXPORT_SYMBOL_GPL for exported APIs\n spi/dw_spi: Fix too short timeout in spi polling loop\n spi/pl022: convert running variable\n spi/pl022: convert busy flag to a bool\n spi/pl022: pass the returned sglen to the DMA engine\n spi/pl022: map the buffers on the DMA engine\n spi/topcliff_pch: Fix data transfer issue\n spi/imx: remove autodetection\n spi/pxa2xx: pass of_node to spi device and set a parent device\n spi/pxa2xx: Modify RX-Tresh instead of busy-loop for the remaining RX bytes.\n spi/pxa2xx: Add chipselect support for Sodaville\n spi/pxa2xx: Consider CE4100\u0027s FIFO depth\n spi/pxa2xx: Add CE4100 support\n ...\n" }, { "commit": "72eb6a791459c87a0340318840bb3bd9252b627b", "tree": "3bfb8ad99f9c7e511f37f72d57b56a2cea06d753", "parents": [ "23d69b09b78c4876e134f104a3814c30747c53f1", "55ee4ef30241a62b700f79517e6d5ef2ddbefa67" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Fri Jan 07 17:02:58 2011 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Fri Jan 07 17:02:58 2011 -0800" }, "message": "Merge branch \u0027for-2.6.38\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu\n\n* \u0027for-2.6.38\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu: (30 commits)\n gameport: use this_cpu_read instead of lookup\n x86: udelay: Use this_cpu_read to avoid address calculation\n x86: Use this_cpu_inc_return for nmi counter\n x86: Replace uses of current_cpu_data with this_cpu ops\n x86: Use this_cpu_ops to optimize code\n vmstat: User per cpu atomics to avoid interrupt disable / enable\n irq_work: Use per cpu atomics instead of regular atomics\n cpuops: Use cmpxchg for xchg to avoid lock semantics\n x86: this_cpu_cmpxchg and this_cpu_xchg operations\n percpu: Generic this_cpu_cmpxchg() and this_cpu_xchg support\n percpu,x86: relocate this_cpu_add_return() and friends\n connector: Use this_cpu operations\n xen: Use this_cpu_inc_return\n taskstats: Use this_cpu_ops\n random: Use this_cpu_inc_return\n fs: Use this_cpu_inc_return in buffer.c\n highmem: Use this_cpu_xx_return() operations\n vmstat: Use this_cpu_inc_return for vm statistics\n x86: Support for this_cpu_add, sub, dec, inc_return\n percpu: Generic support for this_cpu_add, sub, dec, inc_return\n ...\n\nFixed up conflicts: in arch/x86/kernel/{apic/nmi.c, apic/x2apic_uv_x.c, process.c}\nas per Tejun.\n" }, { "commit": "23d69b09b78c4876e134f104a3814c30747c53f1", "tree": "40744de4f4126c21027ce537264524095e0e7979", "parents": [ "e744070fd4ff9d3114277e52d77afa21579adce2", "569ff2de2e1c8ac67c8df3a7367d46d0d9460a35" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Fri Jan 07 16:58:04 2011 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Fri Jan 07 16:58:04 2011 -0800" }, "message": "Merge branch \u0027for-2.6.38\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq\n\n* \u0027for-2.6.38\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq: (33 commits)\n usb: don\u0027t use flush_scheduled_work()\n speedtch: don\u0027t abuse struct delayed_work\n media/video: don\u0027t use flush_scheduled_work()\n media/video: explicitly flush request_module work\n ioc4: use static work_struct for ioc4_load_modules()\n init: don\u0027t call flush_scheduled_work() from do_initcalls()\n s390: don\u0027t use flush_scheduled_work()\n rtc: don\u0027t use flush_scheduled_work()\n mmc: update workqueue usages\n mfd: update workqueue usages\n dvb: don\u0027t use flush_scheduled_work()\n leds-wm8350: don\u0027t use flush_scheduled_work()\n mISDN: don\u0027t use flush_scheduled_work()\n macintosh/ams: don\u0027t use flush_scheduled_work()\n vmwgfx: don\u0027t use flush_scheduled_work()\n tpm: don\u0027t use flush_scheduled_work()\n sonypi: don\u0027t use flush_scheduled_work()\n hvsi: don\u0027t use flush_scheduled_work()\n xen: don\u0027t use flush_scheduled_work()\n gdrom: don\u0027t use flush_scheduled_work()\n ...\n\nFixed up trivial conflict in drivers/media/video/bt8xx/bttv-input.c\nas per Tejun.\n" }, { "commit": "e744070fd4ff9d3114277e52d77afa21579adce2", "tree": "5f397c684c61a50bd47014abfe685fd6c3d09d8c", "parents": [ "d004e4d3322340b6433caaef4a47ab8c933afb70", "c9b5f501ef1580faa30c40c644b7691870462201" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Fri Jan 07 14:55:48 2011 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Fri Jan 07 14:55:48 2011 -0800" }, "message": "Merge branch \u0027sched-fixes-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip\n\n* \u0027sched-fixes-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:\n sched: Constify function scope static struct sched_param usage\n sched: Fix strncmp operation\n sched: Move sched_autogroup_exit() to free_signal_struct()\n sched: Fix struct autogroup memory leak\n sched: Mark autogroup_init() __init\n sched: Consolidate the name of root_task_group and init_task_group\n" }, { "commit": "d004e4d3322340b6433caaef4a47ab8c933afb70", "tree": "f9ba6e6cb960fddb09da7c322d4b1dcb3f4b0e6f", "parents": [ "128283a47e7cc6754db3d2704004c1ed728d26db", "1c2a48cf65580a276552151eb8f78d78c55b828e" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Fri Jan 07 14:55:31 2011 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Fri Jan 07 14:55:31 2011 -0800" }, "message": "Merge branch \u0027x86-apic-cleanups-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip\n\n* \u0027x86-apic-cleanups-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:\n x86: apic: Cleanup and simplify setup_local_APIC()\n x86: Further simplify mp_irq info handling\n x86: Unify 3 similar ways of saving mp_irqs info\n x86, ioapic: Avoid writing io_apic id if already correct\n x86, x2apic: Don\u0027t map lapic addr for preenabled x2apic systems\n x86, sfi: Use register_lapic_address()\n x86, apic: Use register_lapic_address() in init_apic_mapping()\n x86, apic: Remove early_init_lapic_mapping()\n x86, apic: Unify identical register_lapic_address() functions\n" }, { "commit": "128283a47e7cc6754db3d2704004c1ed728d26db", "tree": "b3b0db4cd62600776f5e3dd5762798a8bfe793d2", "parents": [ "442d1ba237c81304ccfa33887094e843183645f7", "6d5db4668796d903dc3bad2852c82073509c37d2" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Fri Jan 07 14:54:03 2011 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Fri Jan 07 14:54:03 2011 -0800" }, "message": "Merge branch \u0027mce-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/bp/bp\n\n* \u0027mce-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/bp/bp:\n EDAC, MCE: Fix NB error formatting\n EDAC, MCE: Use BIT_64() to eliminate warnings on 32-bit\n EDAC, MCE: Enable MCE decoding on F15h\n EDAC, MCE: Allow F15h bank 6 MCE injection\n EDAC, MCE: Shorten error report formatting\n EDAC, MCE: Overhaul error fields extraction macros\n EDAC, MCE: Add F15h FP MCE decoder\n EDAC, MCE: Add F15 EX MCE decoder\n EDAC, MCE: Add an F15h NB MCE decoder\n EDAC, MCE: No F15h LS MCE decoder\n EDAC, MCE: Add F15h CU MCE decoder\n EDAC, MCE: Add F15h IC MCE decoder\n EDAC, MCE: Add F15h DC MCE decoder\n EDAC, MCE: Select extended error code mask\n" }, { "commit": "442d1ba237c81304ccfa33887094e843183645f7", "tree": "55d516e121f3bc558e808d05ae6407f845456db3", "parents": [ "fb5131e1880ea1ba3ba7197cd5cc66c9c288f715", "a135cef79a2927ecff800492a26cd314e9cba996" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Fri Jan 07 14:53:42 2011 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Fri Jan 07 14:53:42 2011 -0800" }, "message": "Merge branch \u0027edac-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/bp/bp\n\n* \u0027edac-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/bp/bp:\n amd64_edac: Disable DRAM ECC injection on K8\n EDAC: Fixup scrubrate manipulation\n amd64_edac: Remove two-stage initialization\n amd64_edac: Check ECC capabilities initially\n amd64_edac: Carve out ECC-related hw settings\n amd64_edac: Remove PCI ECS enabling functions\n amd64_edac: Remove explicit Kconfig PCI dependency\n amd64_edac: Allocate driver instances dynamically\n amd64_edac: Rework printk macros\n amd64_edac: Rename CPU PCI devices\n amd64_edac: Concentrate per-family init even more\n amd64_edac: Cleanup the CPU PCI device reservation\n amd64_edac: Simplify CPU family detection\n amd64_edac: Add per-family init function\n amd64_edac: Use cached extended CPU model\n amd64_edac: Remove F11h support\n" }, { "commit": "fb5131e1880ea1ba3ba7197cd5cc66c9c288f715", "tree": "f0d9f25f9079727b9ead5a2b4cc85a0fea9b4668", "parents": [ "d074b104cefcb6e8ded55a53e62fed59a246f55d", "8e1023016cf17152972b98bce6c144834a4916d5" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Fri Jan 07 14:50:50 2011 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Fri Jan 07 14:50:50 2011 -0800" }, "message": "Merge branch \u0027for-linus\u0027 of git://git390.marist.edu/pub/scm/linux-2.6\n\n* \u0027for-linus\u0027 of git://git390.marist.edu/pub/scm/linux-2.6: (65 commits)\n [S390] prevent unneccesary loops_per_jiffy recalculation\n [S390] cpuinfo: use get_online_cpus() instead of preempt_disable()\n [S390] smp: remove cpu hotplug messages\n [S390] mutex: enable spinning mutex on s390\n [S390] mutex: Introduce arch_mutex_cpu_relax()\n [S390] cio: fix ccwgroup unregistration race condition\n [S390] perf: add DWARF register lookup for s390\n [S390] cleanup ftrace backend functions\n [S390] ptrace cleanup\n [S390] smp/idle: call init_idle() before starting a new cpu\n [S390] smp: delay idle task creation\n [S390] dasd: Correct retry counter for terminated I/O.\n [S390] dasd: Add support for raw ECKD access.\n [S390] dasd: Prevent deadlock during suspend/resume.\n [S390] dasd: Improve handling of stolen DASD reservation\n [S390] dasd: do path verification for paths added at runtime\n [S390] dasd: add High Performance FICON multitrack support\n [S390] cio: reduce memory consumption of itcw structures\n [S390] nmi: enable machine checks early\n [S390] qeth: buffer count imbalance\n ...\n" }, { "commit": "d074b104cefcb6e8ded55a53e62fed59a246f55d", "tree": "8c5b3a3992c5abab8b41b6e1f2837bc46f82b207", "parents": [ "31b6ca0af758a88e5e769b48cc6dde037ee37b96", "c413521eb4e2d7ffd5ce432a144708d479054bd3" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Fri Jan 07 14:50:14 2011 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Fri Jan 07 14:50:14 2011 -0800" }, "message": "Merge branch \u0027rmobile-latest\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6\n\n* \u0027rmobile-latest\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6: (67 commits)\n ARM: mach-shmobile: update for SMP changes.\n ARM: mach-shmobile: update for GIC changes.\n ARM: mach-shmobile: Fix up clkdev fallout for SH73A0.\n dma: shdma: don\u0027t register the global die notifier multiple times\n ARM: mach-shmobile: Rely on run-time IRQ handlers\n ARM: mach-shmobile: Run-time IRQ handler for GIC\n ARM: mach-shmobile: Run-time IRQ handler for INTCA\n ARM: mach-shmobile: Enable CONFIG_MULTI_IRQ_HANDLER\n ARM: mach-shmobile: Use shared GIC entry macros\n ARM: mach-shmobile: mackerel: Add zboot support\n ARM: mach-shmobile: mackerel: Add HDMI sound support\n ARM: mach-shmobile: mackerel: add HDMI video support\n ARM: mach-shmobile: ap4evb: fixup clk_put timing of fsib_clk\n ARM: mach-shmobile: sh73a0: fix div4 table\n ARM: mach-shmobile: ap4/mackerel: modify wrong comment out of USB\n ARM: mach-shmobile: Mackerel VGA camera support\n mmc: sh_mmcif: make DMA support by the driver unconditional\n ARM: mach-shmobile: Add eMMC support through MMCIF on AG5EVM\n ARM: mach-shmobile: Use pullups for AG5EVM KEYSC pins\n ARM: mach-shmobile: sh73a0 GPIO pullup improvement\n ...\n" }, { "commit": "31b6ca0af758a88e5e769b48cc6dde037ee37b96", "tree": "e1968d7168affb25e33e2be2d1d102f94af98af0", "parents": [ "56b85f32d530d09d6805488ad00775d4e0e3baab", "554738da71004d96e06fb75f4772dfc3b0f47810" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Fri Jan 07 14:45:47 2011 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Fri Jan 07 14:45:47 2011 -0800" }, "message": "Merge branch \u0027for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input\n\n* \u0027for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input: (58 commits)\n Input: wacom_w8001 - support pen or touch only devices\n Input: wacom_w8001 - use __set_bit to set keybits\n Input: bu21013_ts - fix misuse of logical operation in place of bitop\n Input: i8042 - add Acer Aspire 5100 to the Dritek list\n Input: wacom - add support for digitizer in Lenovo W700\n Input: psmouse - disable the synaptics extension on OLPC machines\n Input: psmouse - fix up Synaptics comment\n Input: synaptics - ignore bogus mt packet\n Input: synaptics - add multi-finger and semi-mt support\n Input: synaptics - report clickpad property\n input: mt: Document interface updates\n Input: fix double equality sign in uevent\n Input: introduce device properties\n hid: egalax: Add support for Wetab (726b)\n Input: include MT library as source for kerneldoc\n MAINTAINERS: Update input-mt entry\n hid: egalax: Add support for Samsung NB30 netbook\n hid: egalax: Document the new devices in Kconfig\n hid: egalax: Add support for Wetab\n hid: egalax: Convert to MT slots\n ...\n\nFixed up trivial conflict in drivers/input/keyboard/Kconfig\n" }, { "commit": "56b85f32d530d09d6805488ad00775d4e0e3baab", "tree": "e7fbe69e338ef775d3b2dd822aa915d259b4bc94", "parents": [ "3e5b08cbbf78bedd316904ab0cf3b27119433ee5", "568389c257fa7d74ce36c2f78bad31965fded4cf" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Fri Jan 07 14:39:20 2011 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Fri Jan 07 14:39:20 2011 -0800" }, "message": "Merge branch \u0027tty-next\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty-2.6\n\n* \u0027tty-next\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty-2.6: (36 commits)\n serial: apbuart: Fixup apbuart_console_init()\n TTY: Add tty ioctl to figure device node of the system console.\n tty: add \u0027active\u0027 sysfs attribute to tty0 and console device\n drivers: serial: apbuart: Handle OF failures gracefully\n Serial: Avoid unbalanced IRQ wake disable during resume\n tty: fix typos/errors in tty_driver.h comments\n pch_uart : fix warnings for 64bit compile\n 8250: fix uninitialized FIFOs\n ip2: fix compiler warning on ip2main_pci_tbl\n specialix: fix compiler warning on specialix_pci_tbl\n rocket: fix compiler warning on rocket_pci_ids\n 8250: add a UPIO_DWAPB32 for 32 bit accesses\n 8250: use container_of() instead of casting\n serial: omap-serial: Add support for kernel debugger\n serial: fix pch_uart kconfig \u0026 build\n drivers: char: hvc: add arm JTAG DCC console support\n RS485 documentation: add 16C950 UART description\n serial: ifx6x60: fix memory leak\n serial: ifx6x60: free IRQ on error\n Serial: EG20T: add PCH_UART driver\n ...\n\nFixed up conflicts in drivers/serial/apbuart.c with evil merge that\nmakes the code look fairly sane (unlike either side).\n" }, { "commit": "3e5b08cbbf78bedd316904ab0cf3b27119433ee5", "tree": "0365745c1b7441c1868551c024410c829c3accc6", "parents": [ "da40d036fd716f0efb2917076220814b1e927ae1", "2af10844eb6ed104f9505bf3a7ba3ceb02264f31" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Fri Jan 07 13:16:28 2011 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Fri Jan 07 13:16:28 2011 -0800" }, "message": "Merge branch \u0027usb-next\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb-2.6\n\n* \u0027usb-next\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb-2.6: (144 commits)\n USB: add support for Dream Cheeky DL100B Webmail Notifier (1d34:0004)\n USB: serial: ftdi_sio: add support for TIOCSERGETLSR\n USB: ehci-mxc: Setup portsc register prior to accessing OTG viewport\n USB: atmel_usba_udc: fix freeing irq in usba_udc_remove()\n usb: ehci-omap: fix tll channel enable mask\n usb: ohci-omap3: fix trivial typo\n USB: gadget: ci13xxx: don\u0027t assume that PAGE_SIZE is 4096\n USB: gadget: ci13xxx: fix complete() callback for no_interrupt rq\u0027s\n USB: gadget: update ci13xxx to work with g_ether\n USB: gadgets: ci13xxx: fix probing of compiled-in gadget drivers\n Revert \"USB: musb: pm: don\u0027t rely fully on clock support\"\n Revert \"USB: musb: blackfin: pm: make it work\"\n USB: uas: Use GFP_NOIO instead of GFP_KERNEL in I/O submission path\n USB: uas: Ensure we only bind to a UAS interface\n USB: uas: Rename sense pipe and sense urb to status pipe and status urb\n USB: uas: Use kzalloc instead of kmalloc\n USB: uas: Fix up the Sense IU\n usb: musb: core: kill unneeded #include\u0027s\n DA8xx: assign name to MUSB IRQ resource\n usb: gadget: g_ncm added\n ...\n\nManually fix up trivial conflicts in USB Kconfig changes in:\n\tarch/arm/mach-omap2/Kconfig\n\tarch/sh/Kconfig\n\tdrivers/usb/Kconfig\n\tdrivers/usb/host/ehci-hcd.c\nand annoying chip clock data conflicts in:\n\tarch/arm/mach-omap2/clock3xxx_data.c\n\tarch/arm/mach-omap2/clock44xx_data.c\n" }, { "commit": "da40d036fd716f0efb2917076220814b1e927ae1", "tree": "567893573a48e2954d82421e77606034d3b32f84", "parents": [ "aa58abc20fa85328a9f048e2626c0893691ff284", "c32e061fa19893ce4acf95d97d5613a161f0f1b7" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Fri Jan 07 12:47:02 2011 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Fri Jan 07 12:47:02 2011 -0800" }, "message": "Merge git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6\n\n* git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6: (147 commits)\n [SCSI] arcmsr: fix write to device check\n [SCSI] lpfc: lower stack use in lpfc_fc_frame_check\n [SCSI] eliminate an unnecessary local variable from scsi_remove_target()\n [SCSI] libiscsi: use bh locking instead of irq with session lock\n [SCSI] libiscsi: do not take host lock in queuecommand\n [SCSI] be2iscsi: fix null ptr when accessing task hdr\n [SCSI] be2iscsi: fix gfp use in alloc_pdu\n [SCSI] libiscsi: add more informative failure message during iscsi scsi eh\n [SCSI] gdth: Add missing call to gdth_ioctl_free\n [SCSI] bfa: remove unused defintions and misc cleanups\n [SCSI] bfa: remove inactive functions\n [SCSI] bfa: replace bfa_assert with WARN_ON\n [SCSI] qla2xxx: Use sg_next to fetch next sg element while walking sg list.\n [SCSI] qla2xxx: Fix to avoid recursive lock failure during BSG timeout.\n [SCSI] qla2xxx: Remove code to not reset ISP82xx on failure.\n [SCSI] qla2xxx: Display mailbox register 4 during 8012 AEN for ISP82XX parts.\n [SCSI] qla2xxx: Don\u0027t perform a BIG_HAMMER if Get-ID (0x20) mailbox command fails on CNAs.\n [SCSI] qla2xxx: Remove redundant module parameter permission bits\n [SCSI] qla2xxx: Add sysfs node for displaying board temperature.\n [SCSI] qla2xxx: Code cleanup to remove unwanted comments and code.\n ...\n" }, { "commit": "aa58abc20fa85328a9f048e2626c0893691ff284", "tree": "88d0f5dcfc9a7a8d1fff5e33ee07bfdea88fc087", "parents": [ "b4a45f5fe8078bfc10837dbd5b98735058bc4698" ], "author": { "name": "Dan Carpenter", "email": "error27@gmail.com", "time": "Fri Jan 07 20:47:37 2011 +0100" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Fri Jan 07 12:44:45 2011 -0800" }, "message": "input/tc3589x: fix compile error\n\nThere was a semi-colon missing and it broke the compile.\n\nSigned-off-by: Dan Carpenter \u003cerror27@gmail.com\u003e\nCc: Dmitry Torokhov \u003cdmitry.torokhov@gmail.com\u003e\nSigned-off-by: Linus Walleij \u003clinus.walleij@stericsson.com\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "07fe0351702b6f0c9749e80cdbcb758686b0fe9b", "tree": "49abac1907bae4be949696e806fbe0626e138d8f", "parents": [ "735759389b7143f95ae7badc97511e7e4729e873" ], "author": { "name": "Russell King - ARM Linux", "email": "linux@arm.linux.org.uk", "time": "Fri Jan 07 15:49:20 2011 +0000" }, "committer": { "name": "Grant Likely", "email": "grant.likely@secretlab.ca", "time": "Fri Jan 07 13:44:24 2011 -0700" }, "message": "spi/omap: Fix DMA API usage in OMAP MCSPI driver\n\nRunning the latest kernel on the 4430SDP board with DMA API debugging\nenabled results in this:\n\nWARNING: at lib/dma-debug.c:803 check_unmap+0x19c/0x6f0()\nNULL NULL: DMA-API: device driver tries to free DMA memory it has not allocated\n[device address\u003d0x000000008129901a] [size\u003d260 bytes]\nModules linked in:\nBacktrace:\n[\u003cc003cbe0\u003e] (dump_backtrace+0x0/0x10c) from [\u003cc0278da8\u003e] (dump_stack+0x18/0x1c)\n r7:c1839dc0 r6:c0198578 r5:c0304b17 r4:00000323\n[\u003cc0278d90\u003e] (dump_stack+0x0/0x1c) from [\u003cc005b158\u003e] (warn_slowpath_common+0x58/0x70)\n[\u003cc005b100\u003e] (warn_slowpath_common+0x0/0x70) from [\u003cc005b214\u003e] (warn_slowpath_fmt+0x38/0x40)\n r8:c1839e40 r7:00000000 r6:00000104 r5:00000000 r4:8129901a\n[\u003cc005b1dc\u003e] (warn_slowpath_fmt+0x0/0x40) from [\u003cc0198578\u003e] (check_unmap+0x19c/0x6f0)\n r3:c03110de r2:c0304e6b\n[\u003cc01983dc\u003e] (check_unmap+0x0/0x6f0) from [\u003cc0198cd8\u003e] (debug_dma_unmap_page+0x74/0x80)\n[\u003cc0198c64\u003e] (debug_dma_unmap_page+0x0/0x80) from [\u003cc01d5ad8\u003e] (omap2_mcspi_work+0x514/0xbf0)\n[\u003cc01d55c4\u003e] (omap2_mcspi_work+0x0/0xbf0) from [\u003cc006dfb0\u003e] (process_one_work+0x294/0x400)\n[\u003cc006dd1c\u003e] (process_one_work+0x0/0x400) from [\u003cc006e50c\u003e] (worker_thread+0x220/0x3f8)\n[\u003cc006e2ec\u003e] (worker_thread+0x0/0x3f8) from [\u003cc00738d0\u003e] (kthread+0x88/0x90)\n[\u003cc0073848\u003e] (kthread+0x0/0x90) from [\u003cc005e924\u003e] (do_exit+0x0/0x5fc)\n r7:00000013 r6:c005e924 r5:c0073848 r4:c1829ee0\n---[ end trace 1b75b31a2719ed20 ]---\n\nI\u0027ve no idea why this driver uses NULL for dma_unmap_single instead of\nthe \u0026spi-\u003edev that is laying around just waiting to be used in that\nfunction - but it\u0027s an easy fix.\n\nAlso replace this comment with a FIXME comment:\n /* Do DMA mapping \"early\" for better error reporting and\n * dcache use. Note that if dma_unmap_single() ever starts\n * to do real work on ARM, we\u0027d need to clean up mappings\n * for previous transfers on *ALL* exits of this loop...\n */\nas the comment is not true - we do work in dma_unmap() functions,\nparticularly on ARMv6 and above. I\u0027ve corrected the existing unmap\nfunctions but if any others are required they must be added ASAP.\n\nSigned-off-by: Russell King \u003crmk+kernel@arm.linux.org.uk\u003e\nAcked-by: Tony Lindgren \u003ctony@atomide.com\u003e\nSigned-off-by: Grant Likely \u003cgrant.likely@secretlab.ca\u003e\n" }, { "commit": "735759389b7143f95ae7badc97511e7e4729e873", "tree": "48481675a7d52ce1a1af6bbf6c47fa6095b5a54d", "parents": [ "77e58efd134b553d723fd963f436920a6aaaa6df" ], "author": { "name": "Richard Genoud", "email": "richard.genoud@gmail.com", "time": "Fri Jan 07 15:26:01 2011 +0100" }, "committer": { "name": "Grant Likely", "email": "grant.likely@secretlab.ca", "time": "Fri Jan 07 10:01:23 2011 -0700" }, "message": "spi/imx: correct the test on platform_get_irq() return value\n\nThe test \"if (spi_imx-\u003eirq \u003c\u003d 0)\" is not testing the IRQ value, but\nthe return value of platform_get_irq(). As platform_get_irq() can\nreturn an error (-ENXIO) or the IRQ value it found, the test should be\n\"if (spi_imx-\u003eirq \u003c 0)\"\n\n[grant.likely: Note: In general, Linux irq number 0 should also mean\nno irq, but arm still allows devices to be assigned 0, and the imx\nplatform uses 0 for one of the spi devices, so this patch is needed\nfor the device to work]\n\nSigned-off-by: Richard Genoud \u003crichard.genoud@gmail.com\u003e\nSigned-off-by: Grant Likely \u003cgrant.likely@secretlab.ca\u003e\n" }, { "commit": "b4a45f5fe8078bfc10837dbd5b98735058bc4698", "tree": "df6f13a27610a3ec7eb4a661448cd779a8f84c79", "parents": [ "01539ba2a706ab7d35fc0667dff919ade7f87d63", "b3e19d924b6eaf2ca7d22cba99a517c5171007b6" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Fri Jan 07 08:56:33 2011 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Fri Jan 07 08:56:33 2011 -0800" }, "message": "Merge branch \u0027vfs-scale-working\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/npiggin/linux-npiggin\n\n* \u0027vfs-scale-working\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/npiggin/linux-npiggin: (57 commits)\n fs: scale mntget/mntput\n fs: rename vfsmount counter helpers\n fs: implement faster dentry memcmp\n fs: prefetch inode data in dcache lookup\n fs: improve scalability of pseudo filesystems\n fs: dcache per-inode inode alias locking\n fs: dcache per-bucket dcache hash locking\n bit_spinlock: add required includes\n kernel: add bl_list\n xfs: provide simple rcu-walk ACL implementation\n btrfs: provide simple rcu-walk ACL implementation\n ext2,3,4: provide simple rcu-walk ACL implementation\n fs: provide simple rcu-walk generic_check_acl implementation\n fs: provide rcu-walk aware permission i_ops\n fs: rcu-walk aware d_revalidate method\n fs: cache optimise dentry and inode for rcu-walk\n fs: dcache reduce branches in lookup path\n fs: dcache remove d_mounted\n fs: fs_struct use seqlock\n fs: rcu-walk for path lookup\n ...\n" }, { "commit": "c9b5f501ef1580faa30c40c644b7691870462201", "tree": "d22df12b72bc90b130254078ee71b1b7e7e3e521", "parents": [ "524429c31b486c05449666b94613f59f729c0a84" ], "author": { "name": "Peter Zijlstra", "email": "a.p.zijlstra@chello.nl", "time": "Fri Jan 07 13:41:40 2011 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Fri Jan 07 15:55:45 2011 +0100" }, "message": "sched: Constify function scope static struct sched_param usage\n\nFunction-scope statics are discouraged because they are\neasily overlooked and can cause subtle bugs/races due to\ntheir global (non-SMP safe) nature.\n\nLinus noticed that we did this for sched_param - at minimum\nmake the const.\n\nSuggested-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\nSigned-off-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nLKML-Reference: Message-ID: \u003cAANLkTinotRxScOHEb0HgFgSpGPkq_6jKTv5CfvnQM\u003dee@mail.gmail.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "524429c31b486c05449666b94613f59f729c0a84", "tree": "00d0a06e864c0054cc6764f1afa6887e1281bcb6", "parents": [ "1c5354de90c900b369e2ebd36c3a065ede29eb93" ], "author": { "name": "Hillf Danton", "email": "dhillf@gmail.com", "time": "Thu Jan 06 20:58:12 2011 +0800" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Fri Jan 07 15:55:10 2011 +0100" }, "message": "sched: Fix strncmp operation\n\nOne of the operands, buf, is incorrect, since it is stripped and the\ncorrect address for subsequent string comparing could change if\nleading white spaces, if any, are removed from buf.\n\nIt is fixed by replacing buf with cmp.\n\nSigned-off-by: Hillf Danton \u003cdhillf@gmail.com\u003e\nSigned-off-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nLKML-Reference: \u003cAANLkTinOPuYsVovrZpbuCCmG5deEyc8WgA_A1RJx_YK7@mail.gmail.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "1c5354de90c900b369e2ebd36c3a065ede29eb93", "tree": "3144205e179f8c4503db06e8da95b604d1640b68", "parents": [ "e9aa1dd19fe49b5aed3ca94aab87576e534d2a39" ], "author": { "name": "Mike Galbraith", "email": "efault@gmx.de", "time": "Wed Jan 05 11:16:04 2011 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Fri Jan 07 15:54:39 2011 +0100" }, "message": "sched: Move sched_autogroup_exit() to free_signal_struct()\n\nPer Oleg\u0027s suggestion, undo fork failure free/put_signal_struct change,\nand move sched_autogroup_exit() to free_signal_struct() instead.\n\nSigned-off-by: Mike Galbraith \u003cefault@gmx.de\u003e\nReviewed-by: Oleg Nesterov \u003coleg@redhat.com\u003e\nSigned-off-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nLKML-Reference: \u003c1294222564.8369.6.camel@marge.simson.net\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "e9aa1dd19fe49b5aed3ca94aab87576e534d2a39", "tree": "04652389e0bd04e37a327002c21b8215c972eda8", "parents": [ "0ca0873555c0abe17b28c25b19f82857c0ddd2bc" ], "author": { "name": "Mike Galbraith", "email": "efault@gmx.de", "time": "Wed Jan 05 11:11:25 2011 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Fri Jan 07 15:54:37 2011 +0100" }, "message": "sched: Fix struct autogroup memory leak\n\nSeems I lost a change somewhere, leaking memory.\n\nsched: fix struct autogroup memory leak\n\nAdd missing change to actually use autogroup_free().\n\nSigned-off-by: Mike Galbraith \u003cefault@gmx.de\u003e\nSigned-off-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nLKML-Reference: \u003c1294222285.8369.2.camel@marge.simson.net\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "0ca0873555c0abe17b28c25b19f82857c0ddd2bc", "tree": "e777dbbcf9ea2e72f253c2816d7ec2e768e09178", "parents": [ "07e06b011db2b3300f6c975ebf293fc4c8c59942" ], "author": { "name": "Yong Zhang", "email": "yong.zhang0@gmail.com", "time": "Fri Jan 07 12:43:45 2011 +0800" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Fri Jan 07 15:54:36 2011 +0100" }, "message": "sched: Mark autogroup_init() __init\n\nautogroup_init() is only called at boot time.\n\nSigned-off-by: Yong Zhang \u003cyong.zhang0@gmail.com\u003e\nCc: Mike Galbraith \u003cefault@gmx.de\u003e\nSigned-off-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nLKML-Reference: \u003c1294375425-31065-1-git-send-email-yong.zhang0@gmail.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "07e06b011db2b3300f6c975ebf293fc4c8c59942", "tree": "f6f0fdd7c1707aa9badf16d1ceb4de1e16adb9e9", "parents": [ "cb600d2f83c854ec3d6660063e4466431999489b" ], "author": { "name": "Yong Zhang", "email": "yong.zhang0@gmail.com", "time": "Fri Jan 07 15:17:36 2011 +0800" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Fri Jan 07 15:54:34 2011 +0100" }, "message": "sched: Consolidate the name of root_task_group and init_task_group\n\nroot_task_group is the leftover of USER_SCHED, now it\u0027s always\nsame to init_task_group.\nBut as Mike suggested, root_task_group is maybe the suitable name\nto keep for a tree.\nSo in this patch:\n init_task_group --\u003e root_task_group\n init_task_group_load --\u003e root_task_group_load\n INIT_TASK_GROUP_LOAD --\u003e ROOT_TASK_GROUP_LOAD\n\nSuggested-by: Mike Galbraith \u003cefault@gmx.de\u003e\nSigned-off-by: Yong Zhang \u003cyong.zhang0@gmail.com\u003e\nSigned-off-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nLKML-Reference: \u003c20110107071736.GA32635@windriver.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "1c2a48cf65580a276552151eb8f78d78c55b828e", "tree": "68ed0628a276b33cb5aa0ad4899c1afe0a33a69d", "parents": [ "0aa002fe602939370e9476e5ec32b562000a0425", "cb600d2f83c854ec3d6660063e4466431999489b" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Fri Jan 07 14:14:15 2011 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Fri Jan 07 14:14:15 2011 +0100" }, "message": "Merge branch \u0027linus\u0027 into x86/apic-cleanups\n\nConflicts:\n\tarch/x86/include/asm/io_apic.h\n\nMerge reason: Resolve the conflict, update to a more recent -rc base\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "6d5db4668796d903dc3bad2852c82073509c37d2", "tree": "a6520e67f93ececcb71f6469fde28e63cb3bb52c", "parents": [ "50adbbd8a8e572ad2533eace228c841ec84028a3" ], "author": { "name": "Borislav Petkov", "email": "borislav.petkov@amd.com", "time": "Thu Nov 25 15:40:27 2010 +0100" }, "committer": { "name": "Borislav Petkov", "email": "borislav.petkov@amd.com", "time": "Fri Jan 07 11:54:26 2011 +0100" }, "message": "EDAC, MCE: Fix NB error formatting\n\nMinor formatting fixup since the information which core was associated\nwith the MCE is not always valid.\n\nSigned-off-by: Borislav Petkov \u003cborislav.petkov@amd.com\u003e\n" }, { "commit": "50adbbd8a8e572ad2533eace228c841ec84028a3", "tree": "34df56e03f29790ed6b16b73cf25d2a5793f0b05", "parents": [ "bad11e031862294265145d87dd4be1ae4af0d57f" ], "author": { "name": "Randy Dunlap", "email": "randy.dunlap@oracle.com", "time": "Sat Nov 13 11:44:26 2010 -0500" }, "committer": { "name": "Borislav Petkov", "email": "borislav.petkov@amd.com", "time": "Fri Jan 07 11:54:25 2011 +0100" }, "message": "EDAC, MCE: Use BIT_64() to eliminate warnings on 32-bit\n\nBuilding for X86_32 produces shift count warnings, so use BIT_64() to\neliminate the warnings.\n\ndrivers/edac/mce_amd.c:778: warning: left shift count \u003e\u003d width of type\ndrivers/edac/mce_amd.c:778: warning: left shift count \u003e\u003d width of type\n\nSigned-off-by: Randy Dunlap \u003crandy.dunlap@oracle.com\u003e\nCc: Doug Thompson \u003cdougthompson@xmission.com\u003e\nCc: bluesmoke-devel@lists.sourceforge.net\nSigned-off-by: Borislav Petkov \u003cborislav.petkov@amd.com\u003e\n" }, { "commit": "bad11e031862294265145d87dd4be1ae4af0d57f", "tree": "ccc411f7b6543e807137ad68f6c79c7ce5b88ba7", "parents": [ "1b07ca47ff2fbffbe09d8b0a0a25d8747a3cdcae" ], "author": { "name": "Borislav Petkov", "email": "borislav.petkov@amd.com", "time": "Wed Sep 22 17:44:51 2010 +0200" }, "committer": { "name": "Borislav Petkov", "email": "borislav.petkov@amd.com", "time": "Fri Jan 07 11:54:24 2011 +0100" }, "message": "EDAC, MCE: Enable MCE decoding on F15h\n\nNow that everything is inplace, enable MCE decoding on F15h. Make\ninitcall routine a bit more readable.\n\nSigned-off-by: Borislav Petkov \u003cborislav.petkov@amd.com\u003e\n" }, { "commit": "1b07ca47ff2fbffbe09d8b0a0a25d8747a3cdcae", "tree": "da2c3d76f16c13dcc24b40865489b93d0d8963f9", "parents": [ "fa7ae8cc8c88c0679eab24c5a1b5d3b134a5f542" ], "author": { "name": "Borislav Petkov", "email": "borislav.petkov@amd.com", "time": "Tue Nov 09 19:41:49 2010 +0100" }, "committer": { "name": "Borislav Petkov", "email": "borislav.petkov@amd.com", "time": "Fri Jan 07 11:54:23 2011 +0100" }, "message": "EDAC, MCE: Allow F15h bank 6 MCE injection\n\nF15h adds a sixth MCE bank: adjust bank number check in the injection\ncode.\n\nSigned-off-by: Borislav Petkov \u003cborislav.petkov@amd.com\u003e\n" }, { "commit": "fa7ae8cc8c88c0679eab24c5a1b5d3b134a5f542", "tree": "c6325ce19c35d8fb5b1e85358973c517866584aa", "parents": [ "6245288232516aadf293f575d1812dafb4696aee" ], "author": { "name": "Borislav Petkov", "email": "borislav.petkov@amd.com", "time": "Wed Sep 22 17:42:27 2010 +0200" }, "committer": { "name": "Borislav Petkov", "email": "borislav.petkov@amd.com", "time": "Fri Jan 07 11:54:22 2011 +0100" }, "message": "EDAC, MCE: Shorten error report formatting\n\nShorten up MCi_STATUS flags and add BD\u0027s new deferred and poison types.\nAlso, simplify formatting.\n\nSigned-off-by: Borislav Petkov \u003cborislav.petkov@amd.com\u003e\n" }, { "commit": "6245288232516aadf293f575d1812dafb4696aee", "tree": "8ca69fb55bbc1556b75cc3cbc5cccc1bca4aa613", "parents": [ "b8f85c477bdf1fec98ea7cbe952fdb5f40eb0aa7" ], "author": { "name": "Borislav Petkov", "email": "borislav.petkov@amd.com", "time": "Wed Sep 22 16:08:37 2010 +0200" }, "committer": { "name": "Borislav Petkov", "email": "borislav.petkov@amd.com", "time": "Fri Jan 07 11:54:21 2011 +0100" }, "message": "EDAC, MCE: Overhaul error fields extraction macros\n\nMake macro names shorter thus making code shorter and more clear.\n\nSigned-off-by: Borislav Petkov \u003cborislav.petkov@amd.com\u003e\n" }, { "commit": "b8f85c477bdf1fec98ea7cbe952fdb5f40eb0aa7", "tree": "b657c1b6bed836c19516401782ffc15d706ac6a0", "parents": [ "8259a7e5724c42c89d927b92cda3e0ab15b9ade9" ], "author": { "name": "Borislav Petkov", "email": "borislav.petkov@amd.com", "time": "Wed Sep 22 15:37:58 2010 +0200" }, "committer": { "name": "Borislav Petkov", "email": "borislav.petkov@amd.com", "time": "Fri Jan 07 11:54:20 2011 +0100" }, "message": "EDAC, MCE: Add F15h FP MCE decoder\n\nAdd decoder for FP MCEs.\n\nSigned-off-by: Borislav Petkov \u003cborislav.petkov@amd.com\u003e\n" }, { "commit": "8259a7e5724c42c89d927b92cda3e0ab15b9ade9", "tree": "9b6f55194f8566c4a13350059d61562c6e116b5b", "parents": [ "05cd667d668eb08845dd49c02130e5223121b715" ], "author": { "name": "Borislav Petkov", "email": "borislav.petkov@amd.com", "time": "Wed Sep 22 15:28:59 2010 +0200" }, "committer": { "name": "Borislav Petkov", "email": "borislav.petkov@amd.com", "time": "Fri Jan 07 11:54:19 2011 +0100" }, "message": "EDAC, MCE: Add F15 EX MCE decoder\n\nIntegrate the single FIROB signature into an expanded table along with\nthe new BD MCE types.\n\nSigned-off-by: Borislav Petkov \u003cborislav.petkov@amd.com\u003e\n" }, { "commit": "05cd667d668eb08845dd49c02130e5223121b715", "tree": "e6133b9f7edccfb41b530400b6d17630a9b63210", "parents": [ "b18434cad1740466f7a1c304ea4af0f4d3c874f1" ], "author": { "name": "Borislav Petkov", "email": "borislav.petkov@amd.com", "time": "Wed Sep 22 15:06:24 2010 +0200" }, "committer": { "name": "Borislav Petkov", "email": "borislav.petkov@amd.com", "time": "Fri Jan 07 11:54:18 2011 +0100" }, "message": "EDAC, MCE: Add an F15h NB MCE decoder\n\nby (almost) reusing the F10h one since the signatures are the same.\n\nSigned-off-by: Borislav Petkov \u003cborislav.petkov@amd.com\u003e\n" }, { "commit": "b18434cad1740466f7a1c304ea4af0f4d3c874f1", "tree": "4d19e97e1cdf4ab5ae31e71ae24d3b45d7b7700c", "parents": [ "70fdb494aa8c82f76745d5a32b8abc505813557c" ], "author": { "name": "Borislav Petkov", "email": "borislav.petkov@amd.com", "time": "Wed Sep 22 11:53:32 2010 +0200" }, "committer": { "name": "Borislav Petkov", "email": "borislav.petkov@amd.com", "time": "Fri Jan 07 11:54:17 2011 +0100" }, "message": "EDAC, MCE: No F15h LS MCE decoder\n\nF15h BD doesn\u0027t generate LS MCEs so warn about it.\n\nSigned-off-by: Borislav Petkov \u003cborislav.petkov@amd.com\u003e\n" }, { "commit": "70fdb494aa8c82f76745d5a32b8abc505813557c", "tree": "fc4799261257903f10b0f5ad7d2cfd68574ae2c1", "parents": [ "86039cd401e1780573733870f9c0bd458fc96ea2" ], "author": { "name": "Borislav Petkov", "email": "borislav.petkov@amd.com", "time": "Tue Sep 21 20:45:10 2010 +0200" }, "committer": { "name": "Borislav Petkov", "email": "borislav.petkov@amd.com", "time": "Fri Jan 07 11:54:16 2011 +0100" }, "message": "EDAC, MCE: Add F15h CU MCE decoder\n\nMCE bank 2 is redefined from a BU to a CU (Combined Unit) bank on F15h.\nAdd a decoder function for CU MCEs.\n\nSigned-off-by: Borislav Petkov \u003cborislav.petkov@amd.com\u003e\n" }, { "commit": "86039cd401e1780573733870f9c0bd458fc96ea2", "tree": "64f2acb7d10b8d50983a8b625de849160274f676", "parents": [ "25a4f8b05917f8137bfff8a3f8c6c8c1ac561208" ], "author": { "name": "Borislav Petkov", "email": "borislav.petkov@amd.com", "time": "Mon Nov 08 15:03:35 2010 +0100" }, "committer": { "name": "Borislav Petkov", "email": "borislav.petkov@amd.com", "time": "Fri Jan 07 11:54:15 2011 +0100" }, "message": "EDAC, MCE: Add F15h IC MCE decoder\n\nAdd support for decoding F15h IC MCEs.\n\nSigned-off-by: Borislav Petkov \u003cborislav.petkov@amd.com\u003e\n" }, { "commit": "25a4f8b05917f8137bfff8a3f8c6c8c1ac561208", "tree": "8fc91785a6d142c9bf9f72c85df6b4abc234e152", "parents": [ "2be64bfac71378e1aa8c20031a499bd55e391244" ], "author": { "name": "Borislav Petkov", "email": "borislav.petkov@amd.com", "time": "Fri Sep 17 19:22:34 2010 +0200" }, "committer": { "name": "Borislav Petkov", "email": "borislav.petkov@amd.com", "time": "Fri Jan 07 11:54:14 2011 +0100" }, "message": "EDAC, MCE: Add F15h DC MCE decoder\n\nAdd a decoder for F15h DC MCEs to support the new types of DC MCEs\nintroduced by the BD microarchitecture.\n\nSigned-off-by: Borislav Petkov \u003cborislav.petkov@amd.com\u003e\n" }, { "commit": "2be64bfac71378e1aa8c20031a499bd55e391244", "tree": "e9eb0cb97d4262e2674e34865a4ee01504199086", "parents": [ "3c0eee3fe6a3a1c745379547c7e7c904aa64f6d5" ], "author": { "name": "Borislav Petkov", "email": "borislav.petkov@amd.com", "time": "Fri Sep 17 19:11:47 2010 +0200" }, "committer": { "name": "Borislav Petkov", "email": "borislav.petkov@amd.com", "time": "Fri Jan 07 11:54:12 2011 +0100" }, "message": "EDAC, MCE: Select extended error code mask\n\nF15h enlarges the extended error code of an MCE to a 5-bit field\n(MCi_STATUS[20:16]). Add a mask variable which default 0xf is overridden\non F15h.\n\nSigned-off-by: Borislav Petkov \u003cborislav.petkov@amd.com\u003e\n" }, { "commit": "a135cef79a2927ecff800492a26cd314e9cba996", "tree": "22236442bbf197c5231cb054fcc2b71e0a0cf240", "parents": [ "390944439f746824faec51b576f50cb5ef18745b" ], "author": { "name": "Borislav Petkov", "email": "borislav.petkov@amd.com", "time": "Fri Nov 26 19:24:44 2010 +0100" }, "committer": { "name": "Borislav Petkov", "email": "borislav.petkov@amd.com", "time": "Fri Jan 07 11:38:46 2011 +0100" }, "message": "amd64_edac: Disable DRAM ECC injection on K8\n\nK8 does not allow for an atomic RMW to a cacheline as F10h does so\ndisable the error injection interface for it.\n\nSigned-off-by: Borislav Petkov \u003cborislav.petkov@amd.com\u003e\n" }, { "commit": "390944439f746824faec51b576f50cb5ef18745b", "tree": "5fd15e75e8e5e5d3dc1e176c655829f9d0f83aa9", "parents": [ "360b7f3c602ed80ce8c6b2585dcb76883a440c17" ], "author": { "name": "Borislav Petkov", "email": "borislav.petkov@amd.com", "time": "Wed Nov 24 19:52:09 2010 +0100" }, "committer": { "name": "Borislav Petkov", "email": "borislav.petkov@amd.com", "time": "Fri Jan 07 11:38:31 2011 +0100" }, "message": "EDAC: Fixup scrubrate manipulation\n\nMake the -\u003e{get|set}_sdram_scrub_rate return the actual scrub rate\nbandwidth it succeeded setting and remove superfluous arg pointer used\nfor that. A negative value returned still means that an error occurred\nwhile setting the scrubrate. Document this for future reference.\n\nSigned-off-by: Borislav Petkov \u003cborislav.petkov@amd.com\u003e\n" }, { "commit": "360b7f3c602ed80ce8c6b2585dcb76883a440c17", "tree": "1737a8de8539548fc7a6ba965798234ba62c5ee7", "parents": [ "2299ef7114000f8e403797b7f9a972f54bc05fad" ], "author": { "name": "Borislav Petkov", "email": "borislav.petkov@amd.com", "time": "Fri Oct 15 19:25:38 2010 +0200" }, "committer": { "name": "Borislav Petkov", "email": "borislav.petkov@amd.com", "time": "Fri Jan 07 11:34:03 2011 +0100" }, "message": "amd64_edac: Remove two-stage initialization\n\nNow that all prerequisites are in place, drop the two-stage driver\ninstances initialization in favor of the following simple init sequence:\n\n1. Probe PCI device: we only test ECC capabilities here and if none exit\nearly.\n\n2. If the hw supports ECC and it is/can be enabled, we init the per-node\ninstance.\n\nRemove \"amd64_\" prefix from static functions touched, while at it.\n\nThere actually should be no visible functional change resulting from\nthis patch.\n\nSigned-off-by: Borislav Petkov \u003cborislav.petkov@amd.com\u003e\n" }, { "commit": "2299ef7114000f8e403797b7f9a972f54bc05fad", "tree": "bcce876e2bcd05d168e43422d3ad82a1a2419ae3", "parents": [ "ae7bb7c679e7ddba6c52d1a78a30f9bc868d9738" ], "author": { "name": "Borislav Petkov", "email": "borislav.petkov@amd.com", "time": "Fri Oct 15 17:44:04 2010 +0200" }, "committer": { "name": "Borislav Petkov", "email": "borislav.petkov@amd.com", "time": "Fri Jan 07 11:34:02 2011 +0100" }, "message": "amd64_edac: Check ECC capabilities initially\n\nRework the code to check the hardware ECC capabilities at PCI probing\ntime. We do all further initialization only if we actually can/have ECC\nenabled.\n\nWhile at it:\n0. Fix function naming.\n1. Simplify/clarify debug output.\n2. Remove amd64_ prefix from the static functions\n3. Reorganize code.\n\nSigned-off-by: Borislav Petkov \u003cborislav.petkov@amd.com\u003e\n" }, { "commit": "ae7bb7c679e7ddba6c52d1a78a30f9bc868d9738", "tree": "dccc3bdf93c8746a77d84ecb20b103ddab722e64", "parents": [ "f1db274e1ba7004909de4a9cee62f631c030ba3e" ], "author": { "name": "Borislav Petkov", "email": "borislav.petkov@amd.com", "time": "Thu Oct 14 16:01:30 2010 +0200" }, "committer": { "name": "Borislav Petkov", "email": "borislav.petkov@amd.com", "time": "Fri Jan 07 11:34:00 2011 +0100" }, "message": "amd64_edac: Carve out ECC-related hw settings\n\nThis is in preparation for the init path reorganization where we want\nonly to\n\n1) test whether a particular node supports ECC\n2) can it be enabled\n\nand only then do the necessary allocation/initialization. For that,\nwe need to decouple the ECC settings of the node from the instance\u0027s\ndescriptor.\n\nThe should be no functional change introduced by this patch.\n\nSigned-off-by: Borislav Petkov \u003cborislav.petkov@amd.com\u003e\n" }, { "commit": "f1db274e1ba7004909de4a9cee62f631c030ba3e", "tree": "81c74f068eb1e428025053e30c05be264762a0b6", "parents": [ "027dbd6f5d419c25750d6a26c5c46f46f2093a11" ], "author": { "name": "Borislav Petkov", "email": "borislav.petkov@amd.com", "time": "Thu Oct 14 14:37:13 2010 +0200" }, "committer": { "name": "Borislav Petkov", "email": "borislav.petkov@amd.com", "time": "Fri Jan 07 11:33:59 2011 +0100" }, "message": "amd64_edac: Remove PCI ECS enabling functions\n\nPCI ECS is being enabled by default since 2.6.26 on AMD so this code is\njust superfluous now, remove it.\n\nSigned-off-by: Borislav Petkov \u003cborislav.petkov@amd.com\u003e\n" }, { "commit": "027dbd6f5d419c25750d6a26c5c46f46f2093a11", "tree": "aa8edec28533e42dbbe1a177c0e08852f76adf6b", "parents": [ "cc4d8860fc37dd315b16a43202400d822ab63221" ], "author": { "name": "Borislav Petkov", "email": "borislav.petkov@amd.com", "time": "Wed Oct 13 22:12:15 2010 +0200" }, "committer": { "name": "Borislav Petkov", "email": "borislav.petkov@amd.com", "time": "Fri Jan 07 11:33:58 2011 +0100" }, "message": "amd64_edac: Remove explicit Kconfig PCI dependency\n\nAMD_NB pulls in the dependency on PCI. Clarify/fix help text while at it.\n\nSigned-off-by: Borislav Petkov \u003cborislav.petkov@amd.com\u003e\n" }, { "commit": "cc4d8860fc37dd315b16a43202400d822ab63221", "tree": "9058c36eb01cd7186a1bf11df21df235dc3e904a", "parents": [ "24f9a7fe3f19f3fd310f556364d01a22911724b3" ], "author": { "name": "Borislav Petkov", "email": "borislav.petkov@amd.com", "time": "Wed Oct 13 16:11:59 2010 +0200" }, "committer": { "name": "Borislav Petkov", "email": "borislav.petkov@amd.com", "time": "Fri Jan 07 11:33:57 2011 +0100" }, "message": "amd64_edac: Allocate driver instances dynamically\n\nRemove static allocation in favor of dynamically allocating space for as\nmany driver instances as northbridges present on the system.\n\nThere should be no functional change resulting from this patch.\n\nSigned-off-by: Borislav Petkov \u003cborislav.petkov@amd.com\u003e\n" }, { "commit": "24f9a7fe3f19f3fd310f556364d01a22911724b3", "tree": "4fa8aff338bd58d42fc95b930f29a39b91bacedd", "parents": [ "8d5b5d9c7b86e44fda29a367db3ccd2815a52f7c" ], "author": { "name": "Borislav Petkov", "email": "borislav.petkov@amd.com", "time": "Thu Oct 07 18:29:15 2010 +0200" }, "committer": { "name": "Borislav Petkov", "email": "borislav.petkov@amd.com", "time": "Fri Jan 07 11:33:56 2011 +0100" }, "message": "amd64_edac: Rework printk macros\n\nAdd a macro per printk level, shorten up error messages. Add relevant\ninformation to KERN_INFO level. No functional change.\n\nSigned-off-by: Borislav Petkov \u003cborislav.petkov@amd.com\u003e\n" }, { "commit": "8d5b5d9c7b86e44fda29a367db3ccd2815a52f7c", "tree": "3444029260ba184d6726bd46c48d9fa87a2fc3a5", "parents": [ "b8cfa02f833a614e80f851747c4ce14989a4cfd0" ], "author": { "name": "Borislav Petkov", "email": "borislav.petkov@amd.com", "time": "Fri Oct 01 20:11:07 2010 +0200" }, "committer": { "name": "Borislav Petkov", "email": "borislav.petkov@amd.com", "time": "Fri Jan 07 11:33:54 2011 +0100" }, "message": "amd64_edac: Rename CPU PCI devices\n\nRename variables representing PCI devices to their BKDG names for faster\nsearch and shorter, clearer code.\n\nSigned-off-by: Borislav Petkov \u003cborislav.petkov@amd.com\u003e\n" }, { "commit": "b8cfa02f833a614e80f851747c4ce14989a4cfd0", "tree": "64e9b0dca377952e8671b4a61c47bfffc73e6235", "parents": [ "bbd0c1f675d7d64fc02393d4985a069be5037b54" ], "author": { "name": "Borislav Petkov", "email": "borislav.petkov@amd.com", "time": "Fri Oct 01 19:35:38 2010 +0200" }, "committer": { "name": "Borislav Petkov", "email": "borislav.petkov@amd.com", "time": "Fri Jan 07 11:33:53 2011 +0100" }, "message": "amd64_edac: Concentrate per-family init even more\n\nMove the remaining per-family init code into the proper place and\nsimplify the rest of the initialization. Reorganize error handling in\namd64_init_one_instance().\n\nSigned-off-by: Borislav Petkov \u003cborislav.petkov@amd.com\u003e\n" }, { "commit": "bbd0c1f675d7d64fc02393d4985a069be5037b54", "tree": "dea760f017356a6b8da787c42333aa712e81cbb7", "parents": [ "0092b20d4cf3de243b5c82b410ee02644cec2707" ], "author": { "name": "Borislav Petkov", "email": "borislav.petkov@amd.com", "time": "Fri Oct 01 19:27:58 2010 +0200" }, "committer": { "name": "Borislav Petkov", "email": "borislav.petkov@amd.com", "time": "Fri Jan 07 11:33:52 2011 +0100" }, "message": "amd64_edac: Cleanup the CPU PCI device reservation\n\nShorten code and clarify comments, return proper -E* values on error.\n\nSigned-off-by: Borislav Petkov \u003cborislav.petkov@amd.com\u003e\n" }, { "commit": "0092b20d4cf3de243b5c82b410ee02644cec2707", "tree": "b839d0953cf4949d93dd957f776aae0c4b9f8751", "parents": [ "395ae783b384e5243804b07fba3e3f8379ddf1d6" ], "author": { "name": "Borislav Petkov", "email": "borislav.petkov@amd.com", "time": "Fri Oct 01 19:20:05 2010 +0200" }, "committer": { "name": "Borislav Petkov", "email": "borislav.petkov@amd.com", "time": "Fri Jan 07 11:33:51 2011 +0100" }, "message": "amd64_edac: Simplify CPU family detection\n\nConcentrate CPU family detection in the per-family init function.\n\nSigned-off-by: Borislav Petkov \u003cborislav.petkov@amd.com\u003e\n" }, { "commit": "395ae783b384e5243804b07fba3e3f8379ddf1d6", "tree": "d5b841a23508eed59caf67d7a4ee411e808b2860", "parents": [ "9f56da0e3c3269abe0b2745a54f1b082c3c14433" ], "author": { "name": "Borislav Petkov", "email": "borislav.petkov@amd.com", "time": "Fri Oct 01 18:38:19 2010 +0200" }, "committer": { "name": "Borislav Petkov", "email": "borislav.petkov@amd.com", "time": "Fri Jan 07 11:33:50 2011 +0100" }, "message": "amd64_edac: Add per-family init function\n\nRun a per-family init function which does all the settings based on\nthe family this driver instance is running on. Move the scrubrate\ncalculation in it and simplify code.\n\nSigned-off-by: Borislav Petkov \u003cborislav.petkov@amd.com\u003e\n" }, { "commit": "9f56da0e3c3269abe0b2745a54f1b082c3c14433", "tree": "e3c5c7435e643256f9bb324f95112859761f9ba1", "parents": [ "3ab0e7dc2e1d5598da609ec9a9bcd3b69b8fa654" ], "author": { "name": "Borislav Petkov", "email": "borislav.petkov@amd.com", "time": "Fri Oct 01 19:44:53 2010 +0200" }, "committer": { "name": "Borislav Petkov", "email": "borislav.petkov@amd.com", "time": "Fri Jan 07 11:33:49 2011 +0100" }, "message": "amd64_edac: Use cached extended CPU model\n\n... instead of computing it needlessly again.\n\nSigned-off-by: Borislav Petkov \u003cborislav.petkov@amd.com\u003e\n" }, { "commit": "3ab0e7dc2e1d5598da609ec9a9bcd3b69b8fa654", "tree": "4b4e6d7ef06b1136d8ea31c672e972f38576a06d", "parents": [ "42cbd8efb0746b55112de45173219f76c54390da" ], "author": { "name": "Borislav Petkov", "email": "borislav.petkov@amd.com", "time": "Fri Oct 01 18:19:06 2010 +0200" }, "committer": { "name": "Borislav Petkov", "email": "borislav.petkov@amd.com", "time": "Fri Jan 07 11:33:47 2011 +0100" }, "message": "amd64_edac: Remove F11h support\n\nF11h doesn\u0027t support DRAM ECC so whack it away.\n\nSigned-off-by: Borislav Petkov \u003cborislav.petkov@amd.com\u003e\n" }, { "commit": "b3e19d924b6eaf2ca7d22cba99a517c5171007b6", "tree": "8c1fa4074114a883a4e2de2f7d12eb29ed91bdf1", "parents": [ "c6653a838b1b2738561aff0b8c0f62a9b714bdd9" ], "author": { "name": "Nick Piggin", "email": "npiggin@kernel.dk", "time": "Fri Jan 07 17:50:11 2011 +1100" }, "committer": { "name": "Nick Piggin", "email": "npiggin@kernel.dk", "time": "Fri Jan 07 17:50:33 2011 +1100" }, "message": "fs: scale mntget/mntput\n\nThe problem that this patch aims to fix is vfsmount refcounting scalability.\nWe need to take a reference on the vfsmount for every successful path lookup,\nwhich often go to the same mount point.\n\nThe fundamental difficulty is that a \"simple\" reference count can never be made\nscalable, because any time a reference is dropped, we must check whether that\nwas the last reference. To do that requires communication with all other CPUs\nthat may have taken a reference count.\n\nWe can make refcounts more scalable in a couple of ways, involving keeping\ndistributed counters, and checking for the global-zero condition less\nfrequently.\n\n- check the global sum once every interval (this will delay zero detection\n for some interval, so it\u0027s probably a showstopper for vfsmounts).\n\n- keep a local count and only taking the global sum when local reaches 0 (this\n is difficult for vfsmounts, because we can\u0027t hold preempt off for the life of\n a reference, so a counter would need to be per-thread or tied strongly to a\n particular CPU which requires more locking).\n\n- keep a local difference of increments and decrements, which allows us to sum\n the total difference and hence find the refcount when summing all CPUs. Then,\n keep a single integer \"long\" refcount for slow and long lasting references,\n and only take the global sum of local counters when the long refcount is 0.\n\nThis last scheme is what I implemented here. Attached mounts and process root\nand working directory references are \"long\" references, and everything else is\na short reference.\n\nThis allows scalable vfsmount references during path walking over mounted\nsubtrees and unattached (lazy umounted) mounts with processes still running\nin them.\n\nThis results in one fewer atomic op in the fastpath: mntget is now just a\nper-CPU inc, rather than an atomic inc; and mntput just requires a spinlock\nand non-atomic decrement in the common case. However code is otherwise bigger\nand heavier, so single threaded performance is basically a wash.\n\nSigned-off-by: Nick Piggin \u003cnpiggin@kernel.dk\u003e\n" }, { "commit": "c6653a838b1b2738561aff0b8c0f62a9b714bdd9", "tree": "42ab45defd51c23dde7b91bafe62a28509befaf8", "parents": [ "9d55c369bb5e695e629bc35cba2ef607755b3bee" ], "author": { "name": "Nick Piggin", "email": "npiggin@kernel.dk", "time": "Fri Jan 07 17:50:10 2011 +1100" }, "committer": { "name": "Nick Piggin", "email": "npiggin@kernel.dk", "time": "Fri Jan 07 17:50:33 2011 +1100" }, "message": "fs: rename vfsmount counter helpers\n\nSuggested by Andreas, mnt_ prefix is clearer namespace, follows kernel\nconventions better, and is easier for tab complete. I introduced these\nnames so I\u0027ll admit they were not good choices.\n\nSigned-off-by: Nick Piggin \u003cnpiggin@kernel.dk\u003e\n" }, { "commit": "9d55c369bb5e695e629bc35cba2ef607755b3bee", "tree": "d97cd498a67f1f7987d4403ef90e399516a3b8c9", "parents": [ "e1bb57826381199cc79fbf44e9dfeee58fc7b339" ], "author": { "name": "Nick Piggin", "email": "npiggin@kernel.dk", "time": "Fri Jan 07 17:50:09 2011 +1100" }, "committer": { "name": "Nick Piggin", "email": "npiggin@kernel.dk", "time": "Fri Jan 07 17:50:32 2011 +1100" }, "message": "fs: implement faster dentry memcmp\n\nThe standard memcmp function on a Westmere system shows up hot in\nprofiles in the `git diff` workload (both parallel and single threaded),\nand it is likely due to the costs associated with trapping into\nmicrocode, and little opportunity to improve memory access (dentry\nname is not likely to take up more than a cacheline).\n\nSo replace it with an open-coded byte comparison. This increases code\nsize by 8 bytes in the critical __d_lookup_rcu function, but the\nspeedup is huge, averaging 10 runs of each:\n\ngit diff st user sys elapsed CPU\nbefore 1.15 2.57 3.82 97.1\nafter 1.14 2.35 3.61 96.8\n\ngit diff mt user sys elapsed CPU\nbefore 1.27 3.85 1.46 349\nafter 1.26 3.54 1.43 333\n\nElapsed time for single threaded git diff at 95.0% confidence:\n -0.21 +/- 0.01\n -5.45% +/- 0.24%\n\nIt\u0027s -0.66% +/- 0.06% elapsed time on my Opteron, so rep cmp costs on the\nfam10h seem to be relatively smaller, but there is still a win.\n\nSigned-off-by: Nick Piggin \u003cnpiggin@kernel.dk\u003e\n" }, { "commit": "e1bb57826381199cc79fbf44e9dfeee58fc7b339", "tree": "b2f5edeebc568c3fff4afd799801e9e605b99efc", "parents": [ "4b936885ab04dc6e0bb0ef35e0e23c1a7364d9e5" ], "author": { "name": "Nick Piggin", "email": "npiggin@kernel.dk", "time": "Fri Jan 07 17:50:08 2011 +1100" }, "committer": { "name": "Nick Piggin", "email": "npiggin@kernel.dk", "time": "Fri Jan 07 17:50:32 2011 +1100" }, "message": "fs: prefetch inode data in dcache lookup\n\nThis makes single threaded git diff -1.25% +/- 0.05% elapsed time on my\n2s12c24t Westmere system, and -0.86% +/- 0.05% on my 2s8c Barcelona, by\nprefetching the important first cacheline of the inode in while we do the\nactual name compare and other operations on the dentry.\n\nThere was no measurable slowdown in the single file stat case, or the creat\ncase (where negative dentries would be common).\n\nSigned-off-by: Nick Piggin \u003cnpiggin@kernel.dk\u003e\n" }, { "commit": "4b936885ab04dc6e0bb0ef35e0e23c1a7364d9e5", "tree": "a0173d27c1ce39f173be404d269c2f15144072ab", "parents": [ "873feea09ebc980cbd3631b767356ce1eee65ec1" ], "author": { "name": "Nick Piggin", "email": "npiggin@kernel.dk", "time": "Fri Jan 07 17:50:07 2011 +1100" }, "committer": { "name": "Nick Piggin", "email": "npiggin@kernel.dk", "time": "Fri Jan 07 17:50:32 2011 +1100" }, "message": "fs: improve scalability of pseudo filesystems\n\nRegardless of how much we possibly try to scale dcache, there is likely\nalways going to be some fundamental contention when adding or removing children\nunder the same parent. Pseudo filesystems do not seem need to have connected\ndentries because by definition they are disconnected.\n\nSigned-off-by: Nick Piggin \u003cnpiggin@kernel.dk\u003e\n" }, { "commit": "873feea09ebc980cbd3631b767356ce1eee65ec1", "tree": "59a8fce9b138086abee7cf845f62ff70a390cf81", "parents": [ "ceb5bdc2d246f6d81cf61ed70f325308a11821d2" ], "author": { "name": "Nick Piggin", "email": "npiggin@kernel.dk", "time": "Fri Jan 07 17:50:06 2011 +1100" }, "committer": { "name": "Nick Piggin", "email": "npiggin@kernel.dk", "time": "Fri Jan 07 17:50:31 2011 +1100" }, "message": "fs: dcache per-inode inode alias locking\n\ndcache_inode_lock can be replaced with per-inode locking. Use existing\ninode-\u003ei_lock for this. This is slightly non-trivial because we sometimes\nneed to find the inode from the dentry, which requires d_inode to be\nstabilised (either with refcount or d_lock).\n\nSigned-off-by: Nick Piggin \u003cnpiggin@kernel.dk\u003e\n" }, { "commit": "ceb5bdc2d246f6d81cf61ed70f325308a11821d2", "tree": "65fc9e0227994d4ffc80530dd15bb5a9672a295e", "parents": [ "626d607435617cc0f033522083e2bb195b81813c" ], "author": { "name": "Nick Piggin", "email": "npiggin@kernel.dk", "time": "Fri Jan 07 17:50:05 2011 +1100" }, "committer": { "name": "Nick Piggin", "email": "npiggin@kernel.dk", "time": "Fri Jan 07 17:50:31 2011 +1100" }, "message": "fs: dcache per-bucket dcache hash locking\n\nWe can turn the dcache hash locking from a global dcache_hash_lock into\nper-bucket locking.\n\nSigned-off-by: Nick Piggin \u003cnpiggin@kernel.dk\u003e\n" }, { "commit": "626d607435617cc0f033522083e2bb195b81813c", "tree": "c1decac81fa5218e7391b6e2b75e2642ec4d8f27", "parents": [ "4e35e6070b1ceed89c3bba2af4216c286fb1dafd" ], "author": { "name": "Nick Piggin", "email": "npiggin@kernel.dk", "time": "Fri Jan 07 17:50:04 2011 +1100" }, "committer": { "name": "Nick Piggin", "email": "npiggin@kernel.dk", "time": "Fri Jan 07 17:50:31 2011 +1100" }, "message": "bit_spinlock: add required includes\n\nSigned-off-by: Nick Piggin \u003cnpiggin@kernel.dk\u003e\n" }, { "commit": "4e35e6070b1ceed89c3bba2af4216c286fb1dafd", "tree": "94bd18604a978380c1fde46a3f188f1639067960", "parents": [ "880566e17c4fce0d998d92610d32fcb9506aa6dd" ], "author": { "name": "Nick Piggin", "email": "npiggin@kernel.dk", "time": "Fri Jan 07 17:50:03 2011 +1100" }, "committer": { "name": "Nick Piggin", "email": "npiggin@kernel.dk", "time": "Fri Jan 07 17:50:31 2011 +1100" }, "message": "kernel: add bl_list\n\nIntroduce a type of hlist that can support the use of the lowest bit in the\nhlist_head. This will be subsequently used to implement per-bucket bit spinlock\nfor inode and dentry hashes, and may be useful in other cases such as network\nhashes.\n\nReviewed-by: Paul E. McKenney \u003cpaulmck@linux.vnet.ibm.com\u003e\nSigned-off-by: Nick Piggin \u003cnpiggin@kernel.dk\u003e\n" }, { "commit": "880566e17c4fce0d998d92610d32fcb9506aa6dd", "tree": "74b8adcfea568bd6c99dd73412aedcff3a0e496d", "parents": [ "258a5aa8dfc6294f5f7df892023ee4d3e57c9841" ], "author": { "name": "Nick Piggin", "email": "npiggin@kernel.dk", "time": "Fri Jan 07 17:50:02 2011 +1100" }, "committer": { "name": "Nick Piggin", "email": "npiggin@kernel.dk", "time": "Fri Jan 07 17:50:30 2011 +1100" }, "message": "xfs: provide simple rcu-walk ACL implementation\n\nThis simple implementation just checks for no ACLs on the inode, and\nif so, then the rcu-walk may proceed, otherwise fail it.\n\nSigned-off-by: Nick Piggin \u003cnpiggin@kernel.dk\u003e\n" }, { "commit": "258a5aa8dfc6294f5f7df892023ee4d3e57c9841", "tree": "101a4b9ee97f7d838b35a906244085873c599d19", "parents": [ "73598611ade7c85f0c3d52ba5130103f6709c6d3" ], "author": { "name": "Nick Piggin", "email": "npiggin@kernel.dk", "time": "Fri Jan 07 17:50:01 2011 +1100" }, "committer": { "name": "Nick Piggin", "email": "npiggin@kernel.dk", "time": "Fri Jan 07 17:50:30 2011 +1100" }, "message": "btrfs: provide simple rcu-walk ACL implementation\n\nThis simple implementation just checks for no ACLs on the inode, and\nif so, then the rcu-walk may proceed, otherwise fail it.\n\nSigned-off-by: Nick Piggin \u003cnpiggin@kernel.dk\u003e\n" }, { "commit": "73598611ade7c85f0c3d52ba5130103f6709c6d3", "tree": "51b54051c2b41cb712db0c47b9e595dafc09c8f3", "parents": [ "1e1743ebe35ec7e3c1fa732408358fbc614cbbe5" ], "author": { "name": "Nick Piggin", "email": "npiggin@kernel.dk", "time": "Fri Jan 07 17:50:00 2011 +1100" }, "committer": { "name": "Nick Piggin", "email": "npiggin@kernel.dk", "time": "Fri Jan 07 17:50:30 2011 +1100" }, "message": "ext2,3,4: provide simple rcu-walk ACL implementation\n\nThis simple implementation just checks for no ACLs on the inode, and\nif so, then the rcu-walk may proceed, otherwise fail it.\n\nSigned-off-by: Nick Piggin \u003cnpiggin@kernel.dk\u003e\n" }, { "commit": "1e1743ebe35ec7e3c1fa732408358fbc614cbbe5", "tree": "9654cd50bb29a4c5ccc498b9b08cc385288bc854", "parents": [ "b74c79e99389cd79b31fcc08f82c24e492e63c7e" ], "author": { "name": "Nick Piggin", "email": "npiggin@kernel.dk", "time": "Fri Jan 07 17:49:59 2011 +1100" }, "committer": { "name": "Nick Piggin", "email": "npiggin@kernel.dk", "time": "Fri Jan 07 17:50:29 2011 +1100" }, "message": "fs: provide simple rcu-walk generic_check_acl implementation\n\nThis simple implementation just checks for no ACLs on the inode, and\nif so, then the rcu-walk may proceed, otherwise fail it.\n\nThis could easily be extended to put acls under RCU and check them\nunder seqlock, if need be. But this implementation is enough to show\nthe rcu-walk aware permissions code for path lookups is working, and\nwill handle cases where there are no ACLs or ACLs in just the final\nelement.\n\nThis patch implicity converts tmpfs to rcu-aware permission check.\nSubsequent patches onvert ext*, xfs, and, btrfs. Each of these uses\nacl/permission code in a different way, so convert them all to provide\ntemplates and proof of concept.\n\nSigned-off-by: Nick Piggin \u003cnpiggin@kernel.dk\u003e\n" }, { "commit": "b74c79e99389cd79b31fcc08f82c24e492e63c7e", "tree": "763c6b412517306670bc625e90035f2d16bb739f", "parents": [ "34286d6662308d82aed891852d04c7c3a2649b16" ], "author": { "name": "Nick Piggin", "email": "npiggin@kernel.dk", "time": "Fri Jan 07 17:49:58 2011 +1100" }, "committer": { "name": "Nick Piggin", "email": "npiggin@kernel.dk", "time": "Fri Jan 07 17:50:29 2011 +1100" }, "message": "fs: provide rcu-walk aware permission i_ops\n\nSigned-off-by: Nick Piggin \u003cnpiggin@kernel.dk\u003e\n" }, { "commit": "34286d6662308d82aed891852d04c7c3a2649b16", "tree": "c4b7311404d302e7cb94df7a4690298e1059910a", "parents": [ "44a7d7a878c9cbb74f236ea755b25b6b2e26a9a9" ], "author": { "name": "Nick Piggin", "email": "npiggin@kernel.dk", "time": "Fri Jan 07 17:49:57 2011 +1100" }, "committer": { "name": "Nick Piggin", "email": "npiggin@kernel.dk", "time": "Fri Jan 07 17:50:29 2011 +1100" }, "message": "fs: rcu-walk aware d_revalidate method\n\nRequire filesystems be aware of .d_revalidate being called in rcu-walk\nmode (nd-\u003eflags \u0026 LOOKUP_RCU). For now do a simple push down, returning\n-ECHILD from all implementations.\n\nSigned-off-by: Nick Piggin \u003cnpiggin@kernel.dk\u003e\n" }, { "commit": "44a7d7a878c9cbb74f236ea755b25b6b2e26a9a9", "tree": "d4630a38c0d683a7e1b8823d7971753719b8a54d", "parents": [ "fb045adb99d9b7c562dc7fef834857f78249daa1" ], "author": { "name": "Nick Piggin", "email": "npiggin@kernel.dk", "time": "Fri Jan 07 17:49:56 2011 +1100" }, "committer": { "name": "Nick Piggin", "email": "npiggin@kernel.dk", "time": "Fri Jan 07 17:50:28 2011 +1100" }, "message": "fs: cache optimise dentry and inode for rcu-walk\n\nPut dentry and inode fields into top of data structure. This allows RCU path\ntraversal to perform an RCU dentry lookup in a path walk by touching only the\nfirst 56 bytes of the dentry.\n\nWe also fit in 8 bytes of inline name in the first 64 bytes, so for short\nnames, only 64 bytes needs to be touched to perform the lookup. We should\nget rid of the hash-\u003eprev pointer from the first 64 bytes, and fit 16 bytes\nof name in there, which will take care of 81% rather than 32% of the kernel\ntree.\n\ninode is also rearranged so that RCU lookup will only touch a single cacheline\nin the inode, plus one in the i_ops structure.\n\nThis is important for directory component lookups in RCU path walking. In the\nkernel source, directory names average is around 6 chars, so this works.\n\nWhen we reach the last element of the lookup, we need to lock it and take its\nrefcount which requires another cacheline access.\n\nAlign dentry and inode operations structs, so members will be at predictable\noffsets and we can group common operations into head of structure.\n\nSigned-off-by: Nick Piggin \u003cnpiggin@kernel.dk\u003e\n" }, { "commit": "fb045adb99d9b7c562dc7fef834857f78249daa1", "tree": "1fd6a4024fffeec568abe100d730589bfdb81c38", "parents": [ "5f57cbcc02cf18f6b22ef4066bb10afeb8f930ff" ], "author": { "name": "Nick Piggin", "email": "npiggin@kernel.dk", "time": "Fri Jan 07 17:49:55 2011 +1100" }, "committer": { "name": "Nick Piggin", "email": "npiggin@kernel.dk", "time": "Fri Jan 07 17:50:28 2011 +1100" }, "message": "fs: dcache reduce branches in lookup path\n\nReduce some branches and memory accesses in dcache lookup by adding dentry\nflags to indicate common d_ops are set, rather than having to check them.\nThis saves a pointer memory access (dentry-\u003ed_op) in common path lookup\nsituations, and saves another pointer load and branch in cases where we\nhave d_op but not the particular operation.\n\nPatched with:\n\ngit grep -E \u0027[.\u003e]([[:space:]])*d_op([[:space:]])*\u003d\u0027 | xargs sed -e \u0027s/\\([^\\t ]*\\)-\u003ed_op \u003d \\(.*\\);/d_set_d_op(\\1, \\2);/\u0027 -e \u0027s/\\([^\\t ]*\\)\\.d_op \u003d \\(.*\\);/d_set_d_op(\\\u0026\\1, \\2);/\u0027 -i\n\nSigned-off-by: Nick Piggin \u003cnpiggin@kernel.dk\u003e\n" }, { "commit": "5f57cbcc02cf18f6b22ef4066bb10afeb8f930ff", "tree": "f02e7ee57e6060f0af1bcda281baf2972d2da72f", "parents": [ "c28cc36469554dc55540f059fbdc7fa22a2c31fc" ], "author": { "name": "Nick Piggin", "email": "npiggin@kernel.dk", "time": "Fri Jan 07 17:49:54 2011 +1100" }, "committer": { "name": "Nick Piggin", "email": "npiggin@kernel.dk", "time": "Fri Jan 07 17:50:28 2011 +1100" }, "message": "fs: dcache remove d_mounted\n\nRather than keep a d_mounted count in the dentry, set a dentry flag instead.\nThe flag can be cleared by checking the hash table to see if there are any\nmounts left, which is not time critical because it is performed at detach time.\n\nThe mounted state of a dentry is only used to speculatively take a look in the\nmount hash table if it is set -- before following the mount, vfsmount lock is\ntaken and mount re-checked without races.\n\nThis saves 4 bytes on 32-bit, nothing on 64-bit but it does provide a hole I\nmight use later (and some configs have larger than 32-bit spinlocks which might\nmake use of the hole).\n\nAutofs4 conversion and changelog by Ian Kent \u003craven@themaw.net\u003e:\nIn autofs4, when expring direct (or offset) mounts we need to ensure that we\nblock user path walks into the autofs mount, which is covered by another mount.\nTo do this we clear the mounted status so that follows stop before walking into\nthe mount and are essentially blocked until the expire is completed. The\nautomount daemon still finds the correct dentry for the umount due to the\nfollow mount logic in fs/autofs4/root.c:autofs4_follow_link(), which is set as\nan inode operation for direct and offset mounts only and is called following\nthe lookup that stopped at the covered mount.\n\nAt the end of the expire the covering mount probably has gone away so the\nmounted status need not be restored. But we need to check this and only restore\nthe mounted status if the expire failed.\n\nXXX: autofs may not work right if we have other mounts go over the top of it?\n\nSigned-off-by: Nick Piggin \u003cnpiggin@kernel.dk\u003e\n" }, { "commit": "c28cc36469554dc55540f059fbdc7fa22a2c31fc", "tree": "6b867456be48b8633a2d56a99e00bb3faf9dccc7", "parents": [ "31e6b01f4183ff419a6d1f86177cbf4662347cec" ], "author": { "name": "Nick Piggin", "email": "npiggin@kernel.dk", "time": "Fri Jan 07 17:49:53 2011 +1100" }, "committer": { "name": "Nick Piggin", "email": "npiggin@kernel.dk", "time": "Fri Jan 07 17:50:27 2011 +1100" }, "message": "fs: fs_struct use seqlock\n\nUse a seqlock in the fs_struct to enable us to take an atomic copy of the\ncomplete cwd and root paths. Use this in the RCU lookup path to avoid a\nthread-shared spinlock in RCU lookup operations.\n\nMulti-threaded apps may now perform path lookups with scalability matching\nmulti-process apps. Operations such as stat(2) become very scalable for\nmulti-threaded workload.\n\nSigned-off-by: Nick Piggin \u003cnpiggin@kernel.dk\u003e\n" }, { "commit": "31e6b01f4183ff419a6d1f86177cbf4662347cec", "tree": "e215ec9af88352c55e024f784f3d9f8eb13fab85", "parents": [ "3c22cd5709e8143444a6d08682a87f4c57902df3" ], "author": { "name": "Nick Piggin", "email": "npiggin@kernel.dk", "time": "Fri Jan 07 17:49:52 2011 +1100" }, "committer": { "name": "Nick Piggin", "email": "npiggin@kernel.dk", "time": "Fri Jan 07 17:50:27 2011 +1100" }, "message": "fs: rcu-walk for path lookup\n\nPerform common cases of path lookups without any stores or locking in the\nancestor dentry elements. This is called rcu-walk, as opposed to the current\nalgorithm which is a refcount based walk, or ref-walk.\n\nThis results in far fewer atomic operations on every path element,\nsignificantly improving path lookup performance. It also avoids cacheline\nbouncing on common dentries, significantly improving scalability.\n\nThe overall design is like this:\n* LOOKUP_RCU is set in nd-\u003eflags, which distinguishes rcu-walk from ref-walk.\n* Take the RCU lock for the entire path walk, starting with the acquiring\n of the starting path (eg. root/cwd/fd-path). So now dentry refcounts are\n not required for dentry persistence.\n* synchronize_rcu is called when unregistering a filesystem, so we can\n access d_ops and i_ops during rcu-walk.\n* Similarly take the vfsmount lock for the entire path walk. So now mnt\n refcounts are not required for persistence. Also we are free to perform mount\n lookups, and to assume dentry mount points and mount roots are stable up and\n down the path.\n* Have a per-dentry seqlock to protect the dentry name, parent, and inode,\n so we can load this tuple atomically, and also check whether any of its\n members have changed.\n* Dentry lookups (based on parent, candidate string tuple) recheck the parent\n sequence after the child is found in case anything changed in the parent\n during the path walk.\n* inode is also RCU protected so we can load d_inode and use the inode for\n limited things.\n* i_mode, i_uid, i_gid can be tested for exec permissions during path walk.\n* i_op can be loaded.\n\nWhen we reach the destination dentry, we lock it, recheck lookup sequence,\nand increment its refcount and mountpoint refcount. RCU and vfsmount locks\nare dropped. This is termed \"dropping rcu-walk\". If the dentry refcount does\nnot match, we can not drop rcu-walk gracefully at the current point in the\nlokup, so instead return -ECHILD (for want of a better errno). This signals the\npath walking code to re-do the entire lookup with a ref-walk.\n\nAside from the final dentry, there are other situations that may be encounted\nwhere we cannot continue rcu-walk. In that case, we drop rcu-walk (ie. take\na reference on the last good dentry) and continue with a ref-walk. Again, if\nwe can drop rcu-walk gracefully, we return -ECHILD and do the whole lookup\nusing ref-walk. But it is very important that we can continue with ref-walk\nfor most cases, particularly to avoid the overhead of double lookups, and to\ngain the scalability advantages on common path elements (like cwd and root).\n\nThe cases where rcu-walk cannot continue are:\n* NULL dentry (ie. any uncached path element)\n* parent with d_inode-\u003ei_op-\u003epermission or ACLs\n* dentries with d_revalidate\n* Following links\n\nIn future patches, permission checks and d_revalidate become rcu-walk aware. It\nmay be possible eventually to make following links rcu-walk aware.\n\nUncached path elements will always require dropping to ref-walk mode, at the\nvery least because i_mutex needs to be grabbed, and objects allocated.\n\nSigned-off-by: Nick Piggin \u003cnpiggin@kernel.dk\u003e\n" }, { "commit": "3c22cd5709e8143444a6d08682a87f4c57902df3", "tree": "6d245491d9103a1d77a3128ed5d1d996d3794300", "parents": [ "ff0c7d15f9787b7e8c601533c015295cc68329f8" ], "author": { "name": "Nick Piggin", "email": "npiggin@kernel.dk", "time": "Fri Jan 07 17:49:51 2011 +1100" }, "committer": { "name": "Nick Piggin", "email": "npiggin@kernel.dk", "time": "Fri Jan 07 17:50:27 2011 +1100" }, "message": "kernel: optimise seqlock\n\nAdd branch annotations for seqlock read fastpath, and introduce\n__read_seqcount_begin and __read_seqcount_end functions, that can avoid the\nsmp_rmb() if used carefully. These will be used by store-free path walking\nalgorithm performance is critical and seqlocks are in use.\n\nSigned-off-by: Nick Piggin \u003cnpiggin@kernel.dk\u003e\n" }, { "commit": "ff0c7d15f9787b7e8c601533c015295cc68329f8", "tree": "e3db53950b8ed78e542ab35a3cd3a6eaee26eccd", "parents": [ "fa0d7e3de6d6fc5004ad9dea0dd6b286af8f03e9" ], "author": { "name": "Nick Piggin", "email": "npiggin@kernel.dk", "time": "Fri Jan 07 17:49:50 2011 +1100" }, "committer": { "name": "Nick Piggin", "email": "npiggin@kernel.dk", "time": "Fri Jan 07 17:50:26 2011 +1100" }, "message": "fs: avoid inode RCU freeing for pseudo fs\n\nPseudo filesystems that don\u0027t put inode on RCU list or reachable by\nrcu-walk dentries do not need to RCU free their inodes.\n\nSigned-off-by: Nick Piggin \u003cnpiggin@kernel.dk\u003e\n" }, { "commit": "fa0d7e3de6d6fc5004ad9dea0dd6b286af8f03e9", "tree": "203e0f73883e4c26b5597e36042386a1237dab35", "parents": [ "77812a1ef139d84270d27faacc0630c887411013" ], "author": { "name": "Nick Piggin", "email": "npiggin@kernel.dk", "time": "Fri Jan 07 17:49:49 2011 +1100" }, "committer": { "name": "Nick Piggin", "email": "npiggin@kernel.dk", "time": "Fri Jan 07 17:50:26 2011 +1100" }, "message": "fs: icache RCU free inodes\n\nRCU free the struct inode. This will allow:\n\n- Subsequent store-free path walking patch. The inode must be consulted for\n permissions when walking, so an RCU inode reference is a must.\n- sb_inode_list_lock to be moved inside i_lock because sb list walkers who want\n to take i_lock no longer need to take sb_inode_list_lock to walk the list in\n the first place. This will simplify and optimize locking.\n- Could remove some nested trylock loops in dcache code\n- Could potentially simplify things a bit in VM land. Do not need to take the\n page lock to follow page-\u003emapping.\n\nThe downsides of this is the performance cost of using RCU. In a simple\ncreat/unlink microbenchmark, performance drops by about 10% due to inability to\nreuse cache-hot slab objects. As iterations increase and RCU freeing starts\nkicking over, this increases to about 20%.\n\nIn cases where inode lifetimes are longer (ie. many inodes may be allocated\nduring the average life span of a single inode), a lot of this cache reuse is\nnot applicable, so the regression caused by this patch is smaller.\n\nThe cache-hot regression could largely be avoided by using SLAB_DESTROY_BY_RCU,\nhowever this adds some complexity to list walking and store-free path walking,\nso I prefer to implement this at a later date, if it is shown to be a win in\nreal situations. I haven\u0027t found a regression in any non-micro benchmark so I\ndoubt it will be a problem.\n\nSigned-off-by: Nick Piggin \u003cnpiggin@kernel.dk\u003e\n" }, { "commit": "77812a1ef139d84270d27faacc0630c887411013", "tree": "a051134c0d1c74425a5f60adc0ca252c5db15b35", "parents": [ "ec33679d78f9d653a44ddba10b5fb824c06330a1" ], "author": { "name": "Nick Piggin", "email": "npiggin@kernel.dk", "time": "Fri Jan 07 17:49:48 2011 +1100" }, "committer": { "name": "Nick Piggin", "email": "npiggin@kernel.dk", "time": "Fri Jan 07 17:50:25 2011 +1100" }, "message": "fs: consolidate dentry kill sequence\n\nThe tricky locking for disposing of a dentry is duplicated 3 times in the\ndcache (dput, pruning a dentry from the LRU, and pruning its ancestors).\nConsolidate them all into a single function dentry_kill.\n\nSigned-off-by: Nick Piggin \u003cnpiggin@kernel.dk\u003e\n" }, { "commit": "ec33679d78f9d653a44ddba10b5fb824c06330a1", "tree": "5d1530286d1348064020c466427576294def7191", "parents": [ "be182bff72fae6a3eb25624b39170c40b72f0909" ], "author": { "name": "Nick Piggin", "email": "npiggin@kernel.dk", "time": "Fri Jan 07 17:49:47 2011 +1100" }, "committer": { "name": "Nick Piggin", "email": "npiggin@kernel.dk", "time": "Fri Jan 07 17:50:25 2011 +1100" }, "message": "fs: use RCU in shrink_dentry_list to reduce lock nesting\n\nSigned-off-by: Nick Piggin \u003cnpiggin@kernel.dk\u003e\n" }, { "commit": "be182bff72fae6a3eb25624b39170c40b72f0909", "tree": "b77ee014d7850c6e57dae7231a38c0c26cd96b38", "parents": [ "89e6054836a7b1e7500cd70a14b5579e752c9250" ], "author": { "name": "Nick Piggin", "email": "npiggin@kernel.dk", "time": "Fri Jan 07 17:49:46 2011 +1100" }, "committer": { "name": "Nick Piggin", "email": "npiggin@kernel.dk", "time": "Fri Jan 07 17:50:25 2011 +1100" }, "message": "fs: reduce dcache_inode_lock width in lru scanning\n\nSigned-off-by: Nick Piggin \u003cnpiggin@kernel.dk\u003e\n" }, { "commit": "89e6054836a7b1e7500cd70a14b5579e752c9250", "tree": "b74d2ecd1ac2a571d289e5525a0dc067ec1f35eb", "parents": [ "a734eb458ab2bd11479a27dd54f48e1b26a55845" ], "author": { "name": "Nick Piggin", "email": "npiggin@kernel.dk", "time": "Fri Jan 07 17:49:45 2011 +1100" }, "committer": { "name": "Nick Piggin", "email": "npiggin@kernel.dk", "time": "Fri Jan 07 17:50:25 2011 +1100" }, "message": "fs: dcache reduce prune_one_dentry locking\n\nprune_one_dentry can avoid quite a bit of locking in the common case where\nancestors have an elevated refcount. Alternatively, we could have gone the\nother way and made fewer trylocks in the case where d_count goes to zero, but\nis probably less common.\n\nSigned-off-by: Nick Piggin \u003cnpiggin@kernel.dk\u003e\n" }, { "commit": "a734eb458ab2bd11479a27dd54f48e1b26a55845", "tree": "425f6173d63a58ec719147764300bb324e1d53e3", "parents": [ "dc0474be3e27463d4d4a2793f82366eed906f223" ], "author": { "name": "Nick Piggin", "email": "npiggin@kernel.dk", "time": "Fri Jan 07 17:49:44 2011 +1100" }, "committer": { "name": "Nick Piggin", "email": "npiggin@kernel.dk", "time": "Fri Jan 07 17:50:24 2011 +1100" }, "message": "fs: dcache reduce d_parent locking\n\nUse RCU to simplify locking in dget_parent.\n\nSigned-off-by: Nick Piggin \u003cnpiggin@kernel.dk\u003e\n" }, { "commit": "dc0474be3e27463d4d4a2793f82366eed906f223", "tree": "41f75e638442cb343bacdcfbabb17ffc3bd5b4ce", "parents": [ "357f8e658bba8a085c4a5d4331e30894be8096b8" ], "author": { "name": "Nick Piggin", "email": "npiggin@kernel.dk", "time": "Fri Jan 07 17:49:43 2011 +1100" }, "committer": { "name": "Nick Piggin", "email": "npiggin@kernel.dk", "time": "Fri Jan 07 17:50:24 2011 +1100" }, "message": "fs: dcache rationalise dget variants\n\ndget_locked was a shortcut to avoid the lazy lru manipulation when we already\nheld dcache_lock (lru manipulation was relatively cheap at that point).\nHowever, how that the lru lock is an innermost one, we never hold it at any\ncaller, so the lock cost can now be avoided. We already have well working lazy\ndcache LRU, so it should be fine to defer LRU manipulations to scan time.\n\nSigned-off-by: Nick Piggin \u003cnpiggin@kernel.dk\u003e\n" }, { "commit": "357f8e658bba8a085c4a5d4331e30894be8096b8", "tree": "2182f5cd42a1c142bd2780bdaa7cc7953d9ec924", "parents": [ "89ad485f01fd83c47f17a128db3bd7b89c0f244f" ], "author": { "name": "Nick Piggin", "email": "npiggin@kernel.dk", "time": "Fri Jan 07 17:49:42 2011 +1100" }, "committer": { "name": "Nick Piggin", "email": "npiggin@kernel.dk", "time": "Fri Jan 07 17:50:24 2011 +1100" }, "message": "fs: dcache reduce dcache_inode_lock\n\ndcache_inode_lock can be avoided in d_delete() and d_materialise_unique()\nin cases where it is not required.\n\nSigned-off-by: Nick Piggin \u003cnpiggin@kernel.dk\u003e\n" }, { "commit": "89ad485f01fd83c47f17a128db3bd7b89c0f244f", "tree": "1f9772e3f0dc8ac9392341e677217caf2d9ba36c", "parents": [ "61f3dee4af09528997a970280da240577bf60721" ], "author": { "name": "Nick Piggin", "email": "npiggin@kernel.dk", "time": "Fri Jan 07 17:49:41 2011 +1100" }, "committer": { "name": "Nick Piggin", "email": "npiggin@kernel.dk", "time": "Fri Jan 07 17:50:24 2011 +1100" }, "message": "fs: dcache reduce locking in d_alloc\n\nSigned-off-by: Nick Piggin \u003cnpiggin@kernel.dk\u003e\n" }, { "commit": "61f3dee4af09528997a970280da240577bf60721", "tree": "8c916d7c1965303a37f1051aa5d42d8e2b7b115a", "parents": [ "58db63d086790eec2ed433f9d8c4962239809cf8" ], "author": { "name": "Nick Piggin", "email": "npiggin@kernel.dk", "time": "Fri Jan 07 17:49:40 2011 +1100" }, "committer": { "name": "Nick Piggin", "email": "npiggin@kernel.dk", "time": "Fri Jan 07 17:50:23 2011 +1100" }, "message": "fs: dcache reduce dput locking\n\nIt is possible to run dput without taking data structure locks up-front. In\nmany cases where we don\u0027t kill the dentry anyway, these locks are not required.\n\nSigned-off-by: Nick Piggin \u003cnpiggin@kernel.dk\u003e\n" }, { "commit": "58db63d086790eec2ed433f9d8c4962239809cf8", "tree": "e8fa4238167f92bb0dbded4d2df1498d8c4e9404", "parents": [ "b5c84bf6f6fa3a7dfdcb556023a62953574b60ee" ], "author": { "name": "Nick Piggin", "email": "npiggin@kernel.dk", "time": "Fri Jan 07 17:49:39 2011 +1100" }, "committer": { "name": "Nick Piggin", "email": "npiggin@kernel.dk", "time": "Fri Jan 07 17:50:23 2011 +1100" }, "message": "fs: dcache avoid starvation in dcache multi-step operations\n\nLong lived dcache \"multi-step\" operations which retry on rename seq can\nbe starved with a lot of rename activity. If they fail after the 1st pass,\ntake the rename_lock for writing to avoid further starvation.\n\nSigned-off-by: Nick Piggin \u003cnpiggin@kernel.dk\u003e\n" }, { "commit": "b5c84bf6f6fa3a7dfdcb556023a62953574b60ee", "tree": "7a2c299a180713e21d5cb653cb933121adf53c31", "parents": [ "949854d02455080d20cd3e1db28a3a18daf7599d" ], "author": { "name": "Nick Piggin", "email": "npiggin@kernel.dk", "time": "Fri Jan 07 17:49:38 2011 +1100" }, "committer": { "name": "Nick Piggin", "email": "npiggin@kernel.dk", "time": "Fri Jan 07 17:50:23 2011 +1100" }, "message": "fs: dcache remove dcache_lock\n\ndcache_lock no longer protects anything. remove it.\n\nSigned-off-by: Nick Piggin \u003cnpiggin@kernel.dk\u003e\n" }, { "commit": "949854d02455080d20cd3e1db28a3a18daf7599d", "tree": "9b13a6f86c1d0b91e462a471e53b0e717036b18e", "parents": [ "9abca36087288fe28de4749c71ca003d4b9e3ed0" ], "author": { "name": "Nick Piggin", "email": "npiggin@kernel.dk", "time": "Fri Jan 07 17:49:37 2011 +1100" }, "committer": { "name": "Nick Piggin", "email": "npiggin@kernel.dk", "time": "Fri Jan 07 17:50:22 2011 +1100" }, "message": "fs: Use rename lock and RCU for multi-step operations\n\nThe remaining usages for dcache_lock is to allow atomic, multi-step read-side\noperations over the directory tree by excluding modifications to the tree.\nAlso, to walk in the leaf-\u003eroot direction in the tree where we don\u0027t have\na natural d_lock ordering.\n\nThis could be accomplished by taking every d_lock, but this would mean a\nhuge number of locks and actually gets very tricky.\n\nSolve this instead by using the rename seqlock for multi-step read-side\noperations, retry in case of a rename so we don\u0027t walk up the wrong parent.\nConcurrent dentry insertions are not serialised against. Concurrent deletes\nare tricky when walking up the directory: our parent might have been deleted\nwhen dropping locks so also need to check and retry for that.\n\nWe can also use the rename lock in cases where livelock is a worry (and it\nis introduced in subsequent patch).\n\nSigned-off-by: Nick Piggin \u003cnpiggin@kernel.dk\u003e\n" }, { "commit": "9abca36087288fe28de4749c71ca003d4b9e3ed0", "tree": "1d1b08bdcffb8f8a7be217ee1c017f5154f64f6a", "parents": [ "b23fb0a60379a95e10c671f646b259ea2558421e" ], "author": { "name": "Nick Piggin", "email": "npiggin@kernel.dk", "time": "Fri Jan 07 17:49:36 2011 +1100" }, "committer": { "name": "Nick Piggin", "email": "npiggin@kernel.dk", "time": "Fri Jan 07 17:50:22 2011 +1100" }, "message": "fs: increase d_name lock coverage\n\nCover d_name with d_lock in more cases, where there may be concurrent\nmodification to it.\n\nSigned-off-by: Nick Piggin \u003cnpiggin@kernel.dk\u003e\n" }, { "commit": "b23fb0a60379a95e10c671f646b259ea2558421e", "tree": "7c3644b91241d32fda502a7be0b78e4c225f8091", "parents": [ "2fd6b7f50797f2e993eea59e0a0b8c6399c811dc" ], "author": { "name": "Nick Piggin", "email": "npiggin@kernel.dk", "time": "Fri Jan 07 17:49:35 2011 +1100" }, "committer": { "name": "Nick Piggin", "email": "npiggin@kernel.dk", "time": "Fri Jan 07 17:50:22 2011 +1100" }, "message": "fs: scale inode alias list\n\nAdd a new lock, dcache_inode_lock, to protect the inode\u0027s i_dentry list\nfrom concurrent modification. d_alias is also protected by d_lock.\n\nSigned-off-by: Nick Piggin \u003cnpiggin@kernel.dk\u003e\n" }, { "commit": "2fd6b7f50797f2e993eea59e0a0b8c6399c811dc", "tree": "ce33b94b34844c09103836cf4cfa4364b742f217", "parents": [ "da5029563a0a026c64821b09e8e7b4fd81d3fe1b" ], "author": { "name": "Nick Piggin", "email": "npiggin@kernel.dk", "time": "Fri Jan 07 17:49:34 2011 +1100" }, "committer": { "name": "Nick Piggin", "email": "npiggin@kernel.dk", "time": "Fri Jan 07 17:50:21 2011 +1100" }, "message": "fs: dcache scale subdirs\n\nProtect d_subdirs and d_child with d_lock, except in filesystems that aren\u0027t\nusing dcache_lock for these anyway (eg. using i_mutex).\n\nNote: if we change the locking rule in future so that -\u003ed_child protection is\nprovided only with -\u003ed_parent-\u003ed_lock, it may allow us to reduce some locking.\nBut it would be an exception to an otherwise regular locking scheme, so we\u0027d\nhave to see some good results. Probably not worthwhile.\n\nSigned-off-by: Nick Piggin \u003cnpiggin@kernel.dk\u003e\n" }, { "commit": "da5029563a0a026c64821b09e8e7b4fd81d3fe1b", "tree": "5d5618e0cb382390073377b1be7d0aa76879ac54", "parents": [ "b7ab39f631f505edc2bbdb86620d5493f995c9da" ], "author": { "name": "Nick Piggin", "email": "npiggin@kernel.dk", "time": "Fri Jan 07 17:49:33 2011 +1100" }, "committer": { "name": "Nick Piggin", "email": "npiggin@kernel.dk", "time": "Fri Jan 07 17:50:21 2011 +1100" }, "message": "fs: dcache scale d_unhashed\n\nProtect d_unhashed(dentry) condition with d_lock. This means keeping\nDCACHE_UNHASHED bit in synch with hash manipulations.\n\nSigned-off-by: Nick Piggin \u003cnpiggin@kernel.dk\u003e\n" }, { "commit": "b7ab39f631f505edc2bbdb86620d5493f995c9da", "tree": "62be97ebc7fc69ceb601f23312d335ebb8038ee7", "parents": [ "2304450783dfde7b0b94ae234edd0dbffa865073" ], "author": { "name": "Nick Piggin", "email": "npiggin@kernel.dk", "time": "Fri Jan 07 17:49:32 2011 +1100" }, "committer": { "name": "Nick Piggin", "email": "npiggin@kernel.dk", "time": "Fri Jan 07 17:50:21 2011 +1100" }, "message": "fs: dcache scale dentry refcount\n\nMake d_count non-atomic and protect it with d_lock. This allows us to ensure a\n0 refcount dentry remains 0 without dcache_lock. It is also fairly natural when\nwe start protecting many other dentry members with d_lock.\n\nSigned-off-by: Nick Piggin \u003cnpiggin@kernel.dk\u003e\n" }, { "commit": "2304450783dfde7b0b94ae234edd0dbffa865073", "tree": "b3435e65c24d69ccad9ef9492624f5b6081d86b8", "parents": [ "789680d1ee9311cdf095241dc02bd9784d799cd1" ], "author": { "name": "Nick Piggin", "email": "npiggin@kernel.dk", "time": "Fri Jan 07 17:49:31 2011 +1100" }, "committer": { "name": "Nick Piggin", "email": "npiggin@kernel.dk", "time": "Fri Jan 07 17:50:20 2011 +1100" }, "message": "fs: dcache scale lru\n\nAdd a new lock, dcache_lru_lock, to protect the dcache LRU list from concurrent\nmodification. d_lru is also protected by d_lock, which allows LRU lists to be\naccessed without the lru lock, using RCU in future patches.\n\nSigned-off-by: Nick Piggin \u003cnpiggin@kernel.dk\u003e\n" }, { "commit": "789680d1ee9311cdf095241dc02bd9784d799cd1", "tree": "e6a984b0aa4791918f1b665f45210c2ab762969c", "parents": [ "ec2447c278ee973d35f38e53ca16ba7f965ae33d" ], "author": { "name": "Nick Piggin", "email": "npiggin@kernel.dk", "time": "Fri Jan 07 17:49:30 2011 +1100" }, "committer": { "name": "Nick Piggin", "email": "npiggin@kernel.dk", "time": "Fri Jan 07 17:50:20 2011 +1100" }, "message": "fs: dcache scale hash\n\nAdd a new lock, dcache_hash_lock, to protect the dcache hash table from\nconcurrent modification. d_hash is also protected by d_lock.\n\nSigned-off-by: Nick Piggin \u003cnpiggin@kernel.dk\u003e\n" } ], "next": "ec2447c278ee973d35f38e53ca16ba7f965ae33d" }