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2008-10-26hwmon: (lm90) Add support for the LM99 16 degree offsetJean Delvare
The LM99 differs from the LM86, LM89 and LM90 in that it reports remote temperatures (temp2) 16 degrees lower than they really are. So far we have been cheating and handled this in userspace but it really should be handled by the driver directly. Signed-off-by: Jean Delvare <khali@linux-fr.org> Cc: Matthew Garrett <mjg59@srcf.ucam.org>
2008-10-23Merge branch 'release' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6 * 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6: (123 commits) dock: make dock driver not a module ACPI: fix ia64 build warning ACPI: hack around sysfs warning with link order ACPI suspend: fix build warning when CONFIG_ACPI_SLEEP=n intel_menlo: fix build warning panasonic-laptop: fix build ACPICA: Update version to 20080926 ACPICA: Add support for zero-length buffer-to-string conversions ACPICA: New: Validation for predefined ACPI methods/objects ACPICA: Fix for implicit return compatibility ACPICA: Fixed a couple memory leaks associated with "implicit return" ACPICA: Optimize buffer allocation procedure ACPICA: Fix possible memory leak, error exit path ACPICA: Fix fault after mem allocation failure in AML parser ACPICA: Remove unused ACPI register bit definition ACPICA: Update version to 20080829 ACPICA: Fix possible memory leak in acpi_ns_get_external_pathname ACPICA: Cleanup for internal Reference Object ACPICA: Update comments - no functional changes ACPICA: Update for Reference ACPI_OPERAND_OBJECT ...
2008-10-23Merge branch 'i2c-for-linus' of git://jdelvare.pck.nerim.net/jdelvare-2.6Linus Torvalds
* 'i2c-for-linus' of git://jdelvare.pck.nerim.net/jdelvare-2.6: i2c: Add info->archdata field i2c: Inform about deprecated chips directory i2c: Use pci_ioremap_bar() Schedule removal of the legacy i2c device driver binding model i2c: Clean up <linux/i2c.h> i2c: Update and clean up writing-clients document i2c: Drop 2-byte address block transfer defines i2c: Delete legacy model documentation i2c: Constify i2c_get_clientdata's parameter i2c: Delete outdated client porting guide i2c: Make clear what the class field of i2c_adapter is good for i2c-algo-pcf: Fix typo in debugging log message i2c-algo-pcf: Add adapter hooks around xfer begin and end i2c-algo-pcf: Pass adapter data into ->waitforpin() method i2c-i801: Add support for Intel Ibex Peak
2008-10-23Merge git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpcLinus Torvalds
* git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc: (53 commits) powerpc: Support for relocatable kdump kernel powerpc: Don't use a 16G page if beyond mem= limits powerpc: Add del_node() for early boot code to prune inapplicable devices. powerpc: Further compile fixup for STRICT_MM_TYPECHECKS powerpc: Remove empty #else from signal_64.c powerpc: Move memory size print into common show_cpuinfo for 32-bit hvc_console: Remove __devexit annotation of hvc_remove() hvc_console: Add support for tty window resizing hvc_console: Fix loop if put_char() returns 0 hvc_console: Add tty driver flag TTY_DRIVER_RESET_TERMIOS hvc_console: Add a hangup notifier for backends powerpc/83xx: Add DS1339 RTC support for MPC8349E-mITX boards .dts powerpc/83xx: Add support for MCU microcontroller in .dts files powerpc/85xx: Move mpc8572ds.dts to address-cells/size-cells = <2> of/spi: Support specifying chip select as active high via device tree powerpc: Remove device_type = "board_control" properties in .dts files i2c-cpm: Suppress autoprobing for devices powerpc/85xx: Fix mpc8536ds dma interrupt numbers powerpc/85xx: Enable enhanced functions for 8536 TSEC powerpc: Delete unused prom_strtoul and prom_memparse ...
2008-10-23Merge branch 'for-upstream' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/dvrabel/uwb * 'for-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/dvrabel/uwb: (47 commits) uwb: wrong sizeof argument in mac address compare uwb: don't use printk_ratelimit() so often uwb: use kcalloc where appropriate uwb: use time_after() when purging stale beacons uwb: add credits for the original developers of the UWB/WUSB/WLP subsystems uwb: add entries in the MAINTAINERS file uwb: depend on EXPERIMENTAL wusb: wusb-cbaf (CBA driver) sysfs ABI simplification uwb: document UWB and WUSB sysfs files uwb: add symlinks in sysfs between radio controllers and PALs uwb: dont tranmit identification IEs uwb: i1480/GUWA100U: fix firmware download issues uwb: i1480: remove MAC/PHY information checking function uwb: add Intel i1480 HWA to the UWB RC quirk table uwb: disable command/event filtering for D-Link DUB-1210 uwb: initialize the debug sub-system uwb: Fix handling IEs with empty IE data in uwb_est_get_size() wusb: fix bmRequestType for Abort RPipe request wusb: fix error path for wusb_set_dev_addr() wusb: add HWA host controller driver ...
2008-10-23Merge branch 'release' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6 * 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6: (41 commits) [IA64] Fix annoying IA64_TR_ALLOC_MAX message. [IA64] kill sys32_pipe [IA64] remove sys32_pause [IA64] Add Variable Page Size and IA64 Support in Intel IOMMU ia64/pv_ops: paravirtualized instruction checker. ia64/xen: a recipe for using xen/ia64 with pv_ops. ia64/pv_ops: update Kconfig for paravirtualized guest and xen. ia64/xen: preliminary support for save/restore. ia64/xen: define xen machine vector for domU. ia64/pv_ops/xen: implement xen pv_time_ops. ia64/pv_ops/xen: implement xen pv_irq_ops. ia64/pv_ops/xen: define the nubmer of irqs which xen needs. ia64/pv_ops/xen: implement xen pv_iosapic_ops. ia64/pv_ops/xen: paravirtualize entry.S for ia64/xen. ia64/pv_ops/xen: paravirtualize ivt.S for xen. ia64/pv_ops/xen: paravirtualize DO_SAVE_MIN for xen. ia64/pv_ops/xen: define xen paravirtualized instructions for hand written assembly code ia64/pv_ops/xen: define xen pv_cpu_ops. ia64/pv_ops/xen: define xen pv_init_ops for various xen initialization. ia64/pv_ops/xen: elf note based xen startup. ...
2008-10-23Merge branch 'linus' into testLen Brown
Conflicts: MAINTAINERS arch/x86/kernel/acpi/boot.c arch/x86/kernel/acpi/sleep.c drivers/acpi/Kconfig drivers/pnp/Makefile drivers/pnp/quirks.c Signed-off-by: Len Brown <len.brown@intel.com>
2008-10-22Merge branch 'pnp-debug' into testLen Brown
2008-10-22Merge branch 'misc' into testLen Brown
2008-10-22Merge branch 'bugfixes' into testLen Brown
2008-10-22Merge branch 'acer-wmi' into testLen Brown
2008-10-22ACPI: Add "acpi.power_nocheck=1" to disable power state check in power ↵Zhao Yakui
transition Maybe the incorrect power state is returned on the bogus bios, which is different with the real power state. For example: the bios returns D0 state and the real power state is D3. OS expects to set the device to D0 state. In such case if OS uses the power state returned by the BIOS and checks the device power state very strictly in power transition, the device can't be transited to the correct power state. So the boot option of "acpi.power_nocheck=1" is added to avoid checking the device power in the course of device power transition. http://bugzilla.kernel.org/show_bug.cgi?id=8049 http://bugzilla.kernel.org/show_bug.cgi?id=11000 Signed-off-by: Zhao Yakui <yakui.zhao@intel.com> Signed-off-by: Zhang Rui <rui.zhang@intel.com> Signed-off-by: Li Shaohua <shaohua.li@intel.com> Signed-off-by: Andi Kleen <ak@linux.intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
2008-10-22ACPI: Add expand acpi.debug_layer in kernel-parameters.txtThomas Renninger
Signed-off-by: Thomas Renninger <trenn@suse.de> Signed-off-by: Andi Kleen <ak@linux.intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
2008-10-22Schedule removal of the legacy i2c device driver binding modelJean Delvare
The legacy i2c device driver binding model is superseded by the standard model, so it's time to deprecate it and schedule it for removal. Signed-off-by: Jean Delvare <khali@linux-fr.org>
2008-10-22i2c: Update and clean up writing-clients documentJean Delvare
* Strip trailing white space. * Remove out-of-date or irrelevant parts. * Insist on the fact that command is deprecated. * Fix spelling mistakes and typos. * Reformat code examples and function prototypes to comply with the kernel coding style. Signed-off-by: Jean Delvare <khali@linux-fr.org>
2008-10-22i2c: Delete legacy model documentationJean Delvare
The legacy i2c binding model is deprecated and will be removed soon, so we no longer need to document it. Signed-off-by: Jean Delvare <khali@linux-fr.org>
2008-10-22i2c: Constify i2c_get_clientdata's parameterJean Delvare
i2c_get_clientdata doesn't change the i2c_client it is passed as a parameter, so it can be constified. Same for i2c_get_adapdata. Signed-off-by: Jean Delvare <khali@linux-fr.org>
2008-10-22i2c: Delete outdated client porting guideJean Delvare
The document describing how to port i2c chip drivers from Linux 2.4 to Linux 2.6 is outdated. As I suspect that most drivers that had to be ported have already been by now, I do not want to spend time updating it. Let's just delete it instead. Signed-off-by: Jean Delvare <khali@linux-fr.org>
2008-10-22i2c-i801: Add support for Intel Ibex PeakSeth Heasley
Adds the Intel Ibex Peak (PCH) SMBus Controller Device IDs. Signed-off-by: Seth Heasley <seth.heasley@intel.com> Signed-off-by: Jean Delvare <khali@linux-fr.org>
2008-10-22powerpc: Support for relocatable kdump kernelMohan Kumar M
This adds relocatable kernel support for kdump. With this one can use the same regular kernel to capture the kdump. A signature (0xfeed1234) is passed in r6 from panic code to the next kernel through kexec_sequence and purgatory code. The signature is used to differentiate between kdump kernel and non-kdump kernels. The purgatory code compares the signature and sets the __kdump_flag in head_64.S. During the boot up, kernel code checks __kdump_flag and if it is set, the kernel will behave as relocatable kdump kernel. This kernel will boot at the address where it was loaded by kexec-tools ie. at the address reserved through crashkernel boot parameter. CONFIG_CRASH_DUMP depends on CONFIG_RELOCATABLE option to build kdump kernel as relocatable. So the same kernel can be used as production and kdump kernel. This patch incorporates the changes suggested by Paul Mackerras to avoid GOT use and to avoid two copies of the code. Signed-off-by: Paul Mackerras <paulus@samba.org> Signed-off-by: Mohan Kumar M <mohan@in.ibm.com> Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2008-10-21Merge commit 'origin' into masterBenjamin Herrenschmidt
Manual merge of: arch/powerpc/Kconfig arch/powerpc/include/asm/page.h
2008-10-20of/spi: Support specifying chip select as active high via device treeWolfgang Ocker
The patch allows to specify that an SPI device needs an active high chip select. Signed-off-by: Wolfgang Ocker <weo@reccoware.de> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2008-10-20powerpc: Remove device_type = "board_control" properties in .dts filesAnton Vorontsov
We don't want to encourage the bogus device_type usage. The device type isn't used in the code, so we can simply remove it from the documentation and dts files. Boards should specify proper compatible entries instead. Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com> Acked-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2008-10-20misc: replace remaining __FUNCTION__ with __func__Harvey Harrison
__FUNCTION__ is gcc-specific, use __func__ Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Acked-by: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-10-20Merge branch 'linux-next' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6 * 'linux-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6: (41 commits) PCI: fix pci_ioremap_bar() on s390 PCI: fix AER capability check PCI: use pci_find_ext_capability everywhere PCI: remove #ifdef DEBUG around dev_dbg call PCI hotplug: fix get_##name return value problem PCI: document the pcie_aspm kernel parameter PCI: introduce an pci_ioremap(pdev, barnr) function powerpc/PCI: Add legacy PCI access via sysfs PCI: Add ability to mmap legacy_io on some platforms PCI: probing debug message uniformization PCI: support PCIe ARI capability PCI: centralize the capabilities code in probe.c PCI: centralize the capabilities code in pci-sysfs.c PCI: fix 64-vbit prefetchable memory resource BARs PCI: replace cfg space size (256/4096) by macros. PCI: use resource_size() everywhere. PCI: use same arg names in PCI_VDEVICE comment PCI hotplug: rpaphp: make debug var unique PCI: use %pF instead of print_fn_descriptor_symbol() in quirks.c PCI: fix hotplug get_##name return value problem ...
2008-10-20Merge branch 'tracing-v28-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'tracing-v28-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (131 commits) tracing/fastboot: improve help text tracing/stacktrace: improve help text tracing/fastboot: fix initcalls disposition in bootgraph.pl tracing/fastboot: fix bootgraph.pl initcall name regexp tracing/fastboot: fix issues and improve output of bootgraph.pl tracepoints: synchronize unregister static inline tracepoints: tracepoint_synchronize_unregister() ftrace: make ftrace_test_p6nop disassembler-friendly markers: fix synchronize marker unregister static inline tracing/fastboot: add better resolution to initcall debug/tracing trace: add build-time check to avoid overrunning hex buffer ftrace: fix hex output mode of ftrace tracing/fastboot: fix initcalls disposition in bootgraph.pl tracing/fastboot: fix printk format typo in boot tracer ftrace: return an error when setting a nonexistent tracer ftrace: make some tracers reentrant ring-buffer: make reentrant ring-buffer: move page indexes into page headers tracing/fastboot: only trace non-module initcalls ftrace: move pc counter in irqtrace ... Manually fix conflicts: - init/main.c: initcall tracing - kernel/module.c: verbose level vs tracepoints - scripts/bootgraph.pl: fallout from cherry-picking commits.
2008-10-20Merge branch 'v28-timers-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'v28-timers-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (36 commits) fix documentation of sysrq-q really Fix documentation of sysrq-q timer_list: add base address to clock base timer_list: print cpu number of clockevents device timer_list: print real timer address NOHZ: restart tick device from irq_enter() NOHZ: split tick_nohz_restart_sched_tick() NOHZ: unify the nohz function calls in irq_enter() timers: fix itimer/many thread hang, fix timers: fix itimer/many thread hang, v3 ntp: improve adjtimex frequency rounding timekeeping: fix rounding problem during clock update ntp: let update_persistent_clock() sleep hrtimer: reorder struct hrtimer to save 8 bytes on 64bit builds posix-timers: lock_timer: make it readable posix-timers: lock_timer: kill the bogus ->it_id check posix-timers: kill ->it_sigev_signo and ->it_sigev_value posix-timers: sys_timer_create: cleanup the error handling posix-timers: move the initialization of timer->sigq from send to create path posix-timers: sys_timer_create: simplify and s/tasklist/rcu/ ... Fix trivial conflicts due to sysrq-q description clahes in Documentation/sysrq.txt and drivers/char/sysrq.c
2008-10-20PCI: fix AER capability checkYu Zhao
The 'use pci_find_ext_capability everywhere' cleanup brought a new bug, which makes the AER stop working. Fix it by actually using find_ext_cap instead of just find_cap. Drop the unused config space size define while we're at it. Signed-off-by: Yu Zhao <yu.zhao@intel.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2008-10-20PCI: document the pcie_aspm kernel parameterChuck Ebbert
It can be handy so make sure people know about it. Signed-off-by: Chuck Ebbert <cebbert@redhat.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2008-10-20PCI: fix MSI-HOWTO.txt info about MSI-X MMIO spaceRoland Dreier
The current MSI-HOWTO.txt says that device drivers should not request the memory space that contains MSI-X tables. This is because the original MSI-X implementation did a request_mem_region() on this space, but that code was removed long ago (in the pre-git era, in fact). Years after the code was changed, we might as well clean up the documention to avoid a confusing mention of requesting regions: drivers using MSI-X can just use pci_request_regions() just like any other driver, and so there's no need for MSI-HOWTO.txt to talk about this at all. Signed-off-by: Roland Dreier <roland@digitalvampire.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2008-10-20PCI: Document that most pci options are shared between i386 and x86-64Andi Kleen
Since the code is shared pretty much most of the pci= options are shared, but kernel-parameters.txt marked most of them as i386 only. Signed-off-by: Andi Kleen <ak@linux.intel.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2008-10-20PCI: Check dynids driver_data value for validityJean Delvare
Only accept dynids whose driver_data value matches one of the driver's pci_driver_id entries. This prevents the user from accidentally passing values the drivers do not expect. Cc: Milton Miller <miltonm@bga.com> Acked-by: Greg Kroah-Hartman <gregkh@suse.de> Signed-off-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2008-10-20Merge branch 'linux-next' of git://git.infradead.org/ubifs-2.6Linus Torvalds
* 'linux-next' of git://git.infradead.org/ubifs-2.6: (25 commits) UBIFS: fix ubifs_compress commentary UBIFS: amend printk UBIFS: do not read unnecessary bytes when unpacking bits UBIFS: check buffer length when scanning for LPT nodes UBIFS: correct condition to eliminate unecessary assignment UBIFS: add more debugging messages for LPT UBIFS: fix bulk-read handling uptodate pages UBIFS: improve garbage collection UBIFS: allow for sync_fs when read-only UBIFS: commit on sync_fs UBIFS: correct comment for commit_on_unmount UBIFS: update dbg_dump_inode UBIFS: fix commentary UBIFS: fix races in bit-fields UBIFS: ensure data read beyond i_size is zeroed out correctly UBIFS: correct key comparison UBIFS: use bit-fields when possible UBIFS: check data CRC when in error state UBIFS: improve znode splitting rules UBIFS: add no_chk_data_crc mount option ...
2008-10-20Merge git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6Linus Torvalds
* git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6: (112 commits) sh: Move SH-4 CPU headers down one more level. sh: Only build in gpio.o when CONFIG_GENERIC_GPIO is selected. sh: Migrate common board headers to mach-common/. sh: Move the CPU definition headers from asm/ to cpu/. serial: sh-sci: Add support SCIF of SH7723 video: add sh_mobile_lcdc platform flags video: remove unused sh_mobile_lcdc platform data sh: remove consistent alloc cruft sh: add dynamic crash base address support sh: reduce Migo-R smc91x overruns sh: Fix up some merge damage. Fix debugfs_create_file's error checking method for arch/sh/mm/ Fix debugfs_create_dir's error checking method for arch/sh/kernel/ sh: ap325rxa: Add support RTC RX-8564LC in AP325RXA board sh: Use sh7720 GPIO on magicpanelr2 board sh: Add sh7720 pinmux code sh: Use sh7203 GPIO on rsk7203 board sh: Add sh7203 pinmux code sh: Use sh7723 GPIO on AP325RXA board sh: Add sh7723 pinmux code ...
2008-10-20Merge git://git.infradead.org/mtd-2.6Linus Torvalds
* git://git.infradead.org/mtd-2.6: (69 commits) Revert "[MTD] m25p80.c code cleanup" [MTD] [NAND] GPIO driver depends on ARM... for now. [MTD] [NAND] sh_flctl: fix compile error [MTD] [NOR] AT49BV6416 has swapped erase regions [MTD] [NAND] GPIO NAND flash driver [MTD] cmdlineparts documentation change - explain where mtd-id comes from [MTD] cfi_cmdset_0002.c: Add Macronix CFI V1.0 TopBottom detection [MTD] [NAND] Fix compilation warnings in drivers/mtd/nand/cs553x_nand.c [JFFS2] Write buffer offset adjustment for NOR-ECC (Sibley) flash [MTD] mtdoops: Fix a bug where block may not be erased [MTD] mtdoops: Add a magic number to logged kernel oops [MTD] mtdoops: Fix an off by one error [JFFS2] Correct parameter names of jffs2_compress() in comments [MTD] [NAND] sh_flctl: add support for Renesas SuperH FLCTL [MTD] [NAND] Bug on atmel_nand HW ECC : OOB info not correctly written [MTD] [MAPS] Remove unused variable after ROM API cleanup. [MTD] m25p80.c extended jedec support (v2) [MTD] remove unused mtd parameter in of_mtd_parse_partitions() [MTD] [NAND] remove dead Kconfig associated with !CONFIG_PPC_MERGE [MTD] [NAND] driver extension to support NAND on TQM85xx modules ...
2008-10-20kdump: update elfcorehdr documentation to reflect supported architecturesSimon Horman
IA64, PPC and SH also support the elfcorehdr command line. Signed-off-by: Simon Horman <horms@verge.net.au> Acked-by: Vivek Goyal <vgoyal@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-10-20memcg: avoid accounting special pagesKAMEZAWA Hiroyuki
There are not-on-LRU pages which can be mapped and they are not worth to be accounted. (becasue we can't shrink them and need dirty codes to handle specical case) We'd like to make use of usual objrmap/radix-tree's protcol and don't want to account out-of-vm's control pages. When special_mapping_fault() is called, page->mapping is tend to be NULL and it's charged as Anonymous page. insert_page() also handles some special pages from drivers. This patch is for avoiding to account special pages. Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Cc: Daisuke Nishimura <nishimura@mxp.nes.nec.co.jp> Cc: Balbir Singh <balbir@linux.vnet.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-10-20ext3: add an option to control error handling on file dataHidehiro Kawai
If the journal doesn't abort when it gets an IO error in file data blocks, the file data corruption will spread silently. Because most of applications and commands do buffered writes without fsync(), they don't notice the IO error. It's scary for mission critical systems. On the other hand, if the journal aborts whenever it gets an IO error in file data blocks, the system will easily become inoperable. So this patch introduces a filesystem option to determine whether it aborts the journal or just call printk() when it gets an IO error in file data. If you mount a ext3 fs with data_err=abort option, it aborts on file data write error. If you mount it with data_err=ignore, it doesn't abort, just call printk(). data_err=ignore is the default. Signed-off-by: Hidehiro Kawai <hidehiro.kawai.ez@hitachi.com> Cc: Jan Kara <jack@ucw.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-10-20Fix documentation of sysrq-qAndi Kleen
I fell into the trap recently that it only dumps hrtimers instead of all timers. Fix the documentation. Signed-off-by: Andi Kleen <ak@linux.intel.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-10-20container freezer: document the cgroup freezer subsystem.Matt Helsley
Describe why we need the freezer subsystem and how to use it in a documentation file. Since the cgroups.txt file is focused on the subsystem-agnostic portions of cgroups make a directory and move the old cgroups.txt file at the same time. Signed-off-by: Matt Helsley <matthltc@us.ibm.com> Cc: Paul Menage <menage@google.com> Cc: containers@lists.linux-foundation.org Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-10-20documentation: clarify dirty_ratio and dirty_background_ratio descriptionAndrea Righi
The current documentation of dirty_ratio and dirty_background_ratio is a bit misleading. In the documentation we say that they are "a percentage of total system memory", but the current page writeback policy, intead, is to apply the percentages to the dirtyable memory, that means free pages + reclaimable pages. Better to be more explicit to clarify this concept. Signed-off-by: Andrea Righi <righi.andrea@gmail.com> Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-10-20coredump_filter: add hugepage dumpingKOSAKI Motohiro
Presently hugepage's vma has a VM_RESERVED flag in order not to be swapped. But a VM_RESERVED vma isn't core dumped because this flag is often used for some kernel vmas (e.g. vmalloc, sound related). Thus hugepages are never dumped and it can't be debugged easily. Many developers want hugepages to be included into core-dump. However, We can't read generic VM_RESERVED area because this area is often IO mapping area. then these area reading may change device state. it is definitly undesiable side-effect. So adding a hugepage specific bit to the coredump filter is better. It will be able to hugepage core dumping and doesn't cause any side-effect to any i/o devices. In additional, libhugetlb use hugetlb private mapping pages as anonymous page. Then, hugepage private mapping pages should be core dumped by default. Then, /proc/[pid]/core_dump_filter has two new bits. - bit 5 mean hugetlb private mapping pages are dumped or not. (default: yes) - bit 6 mean hugetlb shared mapping pages are dumped or not. (default: no) I tested by following method. % ulimit -c unlimited % ./crash_hugepage 50 % ./crash_hugepage 50 -p % ls -lh % gdb ./crash_hugepage core % % echo 0x43 > /proc/self/coredump_filter % ./crash_hugepage 50 % ./crash_hugepage 50 -p % ls -lh % gdb ./crash_hugepage core #include <stdlib.h> #include <stdio.h> #include <unistd.h> #include <sys/mman.h> #include <string.h> #include "hugetlbfs.h" int main(int argc, char** argv){ char* p; int ch; int mmap_flags = MAP_SHARED; int fd; int nr_pages; while((ch = getopt(argc, argv, "p")) != -1) { switch (ch) { case 'p': mmap_flags &= ~MAP_SHARED; mmap_flags |= MAP_PRIVATE; break; default: /* nothing*/ break; } } argc -= optind; argv += optind; if (argc == 0){ printf("need # of pages\n"); exit(1); } nr_pages = atoi(argv[0]); if (nr_pages < 2) { printf("nr_pages must >2\n"); exit(1); } fd = hugetlbfs_unlinked_fd(); p = mmap(NULL, nr_pages * gethugepagesize(), PROT_READ|PROT_WRITE, mmap_flags, fd, 0); sleep(2); *(p + gethugepagesize()) = 1; /* COW */ sleep(2); /* crash! */ *(int*)0 = 1; return 0; } Signed-off-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Reviewed-by: Kawai Hidehiro <hidehiro.kawai.ez@hitachi.com> Cc: Hugh Dickins <hugh@veritas.com> Cc: William Irwin <wli@holomorphy.com> Cc: Adam Litke <agl@us.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-10-20doc: unevictable LRU and mlocked pages documentationLee Schermerhorn
Documentation for unevictable lru list and its usage. Signed-off-by: Lee Schermerhorn <lee.schermerhorn@hp.com> Signed-off-by: Rik van Riel <riel@redhat.com> Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-10-20Merge branch 'master' into for-upstreamDavid Vrabel
Conflicts: Documentation/ABI/testing/sysfs-bus-usb drivers/Makefile
2008-10-20fix documentation of sysrq-q reallyThomas Gleixner
SysRq-Q also dumps information about the clockevent devices. Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-10-20Fix documentation of sysrq-qAndi Kleen
I fell into the trap recently that it only dumps hrtimers instead of all timers. Fix the documentation. Signed-off-by: Andi Kleen <ak@linux.intel.com> Cc: torvalds@linux-foundation.org Cc: Ingo Molnar <mingo@elte.hu> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-10-20Merge branch 'master' of ↵Paul Mundt
git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6 Conflicts: Documentation/kernel-parameters.txt arch/sh/include/asm/elf.h
2008-10-17Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb-2.6Linus Torvalds
* git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb-2.6: (94 commits) USB: remove err() macro from more usb drivers USB: remove err() macro from usb misc drivers USB: remove err() macro from usb core code USB: remove err() macro from usb class drivers USB: remove use of err() in drivers/usb/serial USB: remove info() macro from usb mtd drivers USB: remove info() macro from usb input drivers USB: remove info() macro from usb network drivers USB: remove info() macro from remaining usb drivers USB: remove info() macro from usb/misc drivers USB: remove info() macro from usb/serial drivers USB: remove warn macro from HID core USB: remove warn() macro from usb drivers USB: remove warn() macro from usb net drivers USB: remove warn() macro from usb media drivers USB: remove warn() macro from usb input drivers usb/fsl_qe_udc: clear data toggle on clear halt request usb/fsl_qe_udc: fix response to get status request fsl_usb2_udc: Fix oops on probe failure. fsl_usb2_udc: Add a wmb before priming endpoint. ...
2008-10-17Merge branch 'for_linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-2.6 * 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-2.6: (95 commits) V4L/DVB (9296): Patch to remove warning message during cx88-dvb compilation V4L/DVB (9294): gspca: Add a stop sequence in t613. V4L/DVB (9293): gspca: Separate and fix the sensor dependant sequences in t613. V4L/DVB (9292): gspca: Call the control setting functions at init time in t613. V4L/DVB (9291): gspca: Do not set the white balance temperature by default in t613. V4L/DVB (9290): gspca: Adjust the sensor init sequences in t613. V4L/DVB (9289): gspca: Other sensor identified as om6802 in t613. V4L/DVB (9288): gspca: Write to the USB device and not USB interface in t613. V4L/DVB (9287): gspca: Change the name of the multi bytes write function in t613. V4L/DVB (9286): gspca: Compilation problem of gspca.c and the kernel version. V4L/DVB (9283): Correct typo and enable setting the gain on the mt9m111 sensor V4L/DVB (9282): Properly iterate the urbs when destroying them. V4L/DVB (9281): gspca: Add hflip and vflip to the po1030 sensor V4L/DVB (9280): gspca: Use the gspca debug macros V4L/DVB (9279): gspca: Correct some copyright headers V4L/DVB (9278): gspca: Remove the m5602_debug variable V4L/DVB (9277): gspca: propagate an error in m5602_start_transfer() V4L/DVB (9276): videobuf-dvb: two functions are now static V4L/DVB (9275): dvb: input data pointer of cx24116_writeregN() should be const V4L/DVB (9274): Remove spurious messages and turn into debug. ...
2008-10-17Merge branch 'for_linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4 * 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4: ext4: Remove automatic enabling of the HUGE_FILE feature flag ext4: Replace hackish ext4_mb_poll_new_transaction with commit callback ext4: Update Documentation/filesystems/ext4.txt ext4: Remove unused mount options: nomballoc, mballoc, nocheck ext4: Remove compile warnings when building w/o CONFIG_PROC_FS ext4: Add missing newlines to printk messages ext4: Fix file fragmentation during large file write. vfs: Add no_nrwrite_index_update writeback control flag vfs: Remove the range_cont writeback mode. ext4: Use tag dirty lookup during mpage_da_submit_io ext4: let the block device know when unused blocks can be discarded ext4: Don't reuse released data blocks until transaction commits ext4: Use an rbtree for tracking blocks freed during transaction. ext4: Do mballoc init before doing filesystem recovery ext4: Free ext4_prealloc_space using kmem_cache_free ext4: Fix Kconfig typo for ext4dev ext4: Remove an old reference to ext4dev in Makefile comment