243312 Commits

Author SHA1 Message Date
Mark Brown
69952369ed regulator: Remove more wm831x-specific IRQ operations
These are the last users in the tree.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
2011-03-26 14:15:06 +00:00
Linus Walleij
42ab616afe regulator: add ab8500 enable and raise time delays
This uses the new infrastructure to provide proper delays when
enabling or setting the voltage of one specific regulator.

Cc: Bengt Jonsson <bengt.g.jonsson@stericsson.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
2011-03-26 14:15:06 +00:00
Linus Walleij
88cd222b25 regulator: provide consumer interface for fall/rise time
This exposes the functionality for rise/fall fime when setting
voltage to the consumers.

Cc: Bengt Jonsson <bengt.g.jonsson@stericsson.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
2011-03-26 14:15:06 +00:00
Linus Walleij
77af1b2641 regulator: add set_voltage_time_sel infrastructure
This makes it possible to set the stabilization time for voltage
regulators in the same manner as enable_time(). The interface
only supports regulators that implements fixed selectors.

Cc: Bengt Jonsson <bengt.g.jonsson@stericsson.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
2011-03-26 14:15:06 +00:00
Bengt Jonsson
79568b9412 regulator: initialization for ab8500 regulators
The regulators on the AB8500 have a lot of custom
hardware control settings pertaining to 8 external
signals, settings which are board-specific and need
be provided from the platform at startup.

Initialization added for regulators Vana, VextSupply1,
VextSupply2, VextSupply3, Vaux1, Vaux2, Vaux3, VTVout,
Vintcore12, Vaudio, Vdmic, Vamic1, Vamic2, VrefDDR.

Signed-off-by: Bengt Jonsson <bengt.g.jonsson@stericsson.com>
Reviewed-by: Rickard Andersson <rickard.andersson@stericsson.com>
Reviewed-by: Jonas Aberg <jonas.aberg@stericsson.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
2011-03-26 14:15:05 +00:00
Bengt Jonsson
ea05ef31f2 regulator: add support for USB voltage regulator
Signed-off-by: Bengt Jonsson <bengt.g.jonsson@stericsson.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
2011-03-26 14:15:05 +00:00
Linus Walleij
19c9882594 regulator: switch the ab3100 to use enable_time()
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

This switches the ab3100 core to use the enable_time()
infrastructure from the regulator core.

Cc: Mattias Wallin <mattias.wallin@stericsson.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
2011-03-26 14:15:04 +00:00
MyungJoo Ham
7a32b589a9 Regulator: add suspend-finish API for regulator core.
The regulator core had suspend-prepare that turns off the regulators
when entering a system-wide suspend. However, it did not have
suspend-finish that pairs with suspend-prepare and the regulator core
has assumed that the regulator devices and their drivers support
autonomous recover at resume.

This patch adds regulator_suspend_finish that pairs with the
previously-existed regulator_suspend_prepare. The function
regulator_suspend_finish turns on the regulators that have always_on set
or positive use_count so that we can reset the regulator states
appropriately at resume.

In regulator_suspend_finish, if has_full_constraints, it disables
unnecessary regulators.

Signed-off-by: MyungJoo Ham <myungjoo.ham@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
--
Updates
v3
	comments corrected (Thanks to Igor)
v2
	disable unnecessary regulators (Thanks to Mark)
Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
2011-03-26 14:15:04 +00:00
Igor Grinberg
fb7c18cac8 regulator: fix typo in Kconfig
Fix typo: s/TPS695x0/TPS659x0/

Signed-off-by: Igor Grinberg <grinberg@compulab.co.il>
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
2011-03-26 14:15:04 +00:00
Mark Brown
dfda9c27ba regulator: Convert WM831x regulators to genirq
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
2011-03-26 14:15:04 +00:00
Mark Brown
23c2f041ef regulator: If we fail when setting up a supply say which supply
Makes it a bit easier to identify if it's a problem with the supplies,
the usual error would be omitting the supply name entirely.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
2011-03-26 14:15:03 +00:00
Hans de Goede
a66c10887a hwmon: (f71882fg) Add support for the F71889A
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Guenter Roeck <guenter.roeck@ericsson.com>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
2011-03-26 10:45:02 +01:00
Jean Delvare
383586b12d hwmon: (f71882fg) Add support for the F81865F
Add support for the Fintek F81865F. It's essentially compatible with
the F71882FG, but has fewer inputs: 7 voltage, 2 temperature and 2 fan
inputs only.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Acked-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Guenter Roeck <guenter.roeck@ericsson.com>
2011-03-26 10:45:02 +01:00
Jean Delvare
5d7f77bf66 hwmon: (f71882fg) Document all supported devices
The list of supported devices was not always well documented in all
places. Clarify and list all devices in documentation, Kconfig and
the driver itself.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Acked-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Guenter Roeck <guenter.roeck@ericsson.com>
2011-03-26 10:45:02 +01:00
Jean Delvare
f27def07bf hwmon: (f71882fg) Per-chip fan/temperature input count tables
Use tables to list the count of fan and temperature inputs for all
supported chips, almost similar to (but more simple than) what is
already done for voltage inputs. This avoids repeating the same tests
in different functions, and will make it easier to add support for
chips with a different count of fan or temperature inputs.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Acked-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Guenter Roeck <guenter.roeck@ericsson.com>
2011-03-26 10:45:01 +01:00
Jean Delvare
2740c60c4a hwmon: (f71882fg) Secure chip property definition arrays
Using C99-style array initialization will ensure definitions won't
drift if the chips enum gets new values added.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Acked-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Guenter Roeck <guenter.roeck@ericsson.com>
2011-03-26 10:45:01 +01:00
Linus Torvalds
16c29dafcc Merge branch 'syscore' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/suspend-2.6
* 'syscore' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/suspend-2.6:
  Introduce ARCH_NO_SYSDEV_OPS config option (v2)
  cpufreq: Use syscore_ops for boot CPU suspend/resume (v2)
  KVM: Use syscore_ops instead of sysdev class and sysdev
  PCI / Intel IOMMU: Use syscore_ops instead of sysdev class and sysdev
  timekeeping: Use syscore_ops instead of sysdev class and sysdev
  x86: Use syscore_ops instead of sysdev classes and sysdevs
2011-03-25 21:07:59 -07:00
Linus Torvalds
dc50eddb2f Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband:
  RDMA/nes: Fix test of uninitialized netdev
2011-03-25 21:06:37 -07:00
Linus Torvalds
9f34217c84 Merge git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6: (55 commits)
  [SCSI] tcm_loop: Add multi-fabric Linux/SCSI LLD fabric module
  [SCSI] qla4xxx: Use polling mode for disable interrupt mailbox completion
  [SCSI] Revert "[SCSI] Retrieve the Caching mode page"
  [SCSI] bnx2fc: IO completion not processed due to missed wakeup
  [SCSI] qla4xxx: Update driver version to 5.02.00-k6
  [SCSI] qla4xxx: masking required bits of add_fw_options during initialization
  [SCSI] qla4xxx: added new function qla4xxx_relogin_all_devices
  [SCSI] qla4xxx: add support for ql4xsess_recovery_tmo cmd line param
  [SCSI] qla4xxx: Add support for ql4xmaxqdepth command line parameter
  [SCSI] qla4xxx: cleanup function qla4xxx_process_ddb_changed
  [SCSI] qla4xxx: Prevent other port reinitialization during remove_adapter
  [SCSI] qla4xxx: remove unused ddb flag DF_NO_RELOGIN
  [SCSI] qla4xxx: cleanup DDB relogin logic during initialization
  [SCSI] qla4xxx: Do not retry ISP82XX initialization if H/W state is failed
  [SCSI] qla4xxx: Do not send mbox command if FW is in failed state
  [SCSI] qla4xxx: cleanup qla4xxx_initialize_ddb_list()
  [SCSI] ses: add subenclosure support
  [SCSI] bnx2fc: Bump version to 1.0.1
  [SCSI] bnx2fc: Remove unnecessary module state checks
  [SCSI] bnx2fc: Fix MTU issue by using static MTU
  ...
2011-03-25 21:06:13 -07:00
Linus Torvalds
95e14ed7fc Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jwessel/linux-2.6-kgdb
* 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jwessel/linux-2.6-kgdb:
  kdb: add usage string of 'per_cpu' command
  kgdb,x86_64: fix compile warning found with sparse
  kdb: code cleanup to use macro instead of value
  kgdboc,kgdbts: strlen() doesn't count the terminator
2011-03-25 21:04:56 -07:00
Linus Torvalds
00a2470546 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: (56 commits)
  route: Take the right src and dst addresses in ip_route_newports
  ipv4: Fix nexthop caching wrt. scoping.
  ipv4: Invalidate nexthop cache nh_saddr more correctly.
  net: fix pch_gbe section mismatch warning
  ipv4: fix fib metrics
  mlx4_en: Removing HW info from ethtool -i report.
  net_sched: fix THROTTLED/RUNNING race
  drivers/net/a2065.c: Convert release_resource to release_region/release_mem_region
  drivers/net/ariadne.c: Convert release_resource to release_region/release_mem_region
  bonding: fix rx_handler locking
  myri10ge: fix rmmod crash
  mlx4_en: updated driver version to 1.5.4.1
  mlx4_en: Using blue flame support
  mlx4_core: reserve UARs for userspace consumers
  mlx4_core: maintain available field in bitmap allocator
  mlx4: Add blue flame support for kernel consumers
  mlx4_en: Enabling new steering
  mlx4: Add support for promiscuous mode in the new steering model.
  mlx4: generalization of multicast steering.
  mlx4_en: Reporting HW revision in ethtool -i
  ...
2011-03-25 21:02:22 -07:00
Linus Torvalds
5aafdea448 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6:
  PCI: Disable ASPM when _OSC control is not granted for PCIe services
  PCI: Changing ASPM policy, via /sys, to POWERSAVE could cause NMIs
  PCI: PCIe links may not get configured for ASPM under POWERSAVE mode
  PCI/ACPI: Report ASPM support to BIOS if not disabled from command line
2011-03-25 21:01:43 -07:00
Linus Torvalds
56a9ccb7ba Merge git://git.infradead.org/battery-2.6
* git://git.infradead.org/battery-2.6: (30 commits)
  bq20z75: Fix time and temp units
  bq20z75: Fix issues with present and suspend
  z2_battery: Fix count of properties
  s3c_adc_battery: Fix method names when PM not set
  z2_battery: Add MODULE_DEVICE_TABLE
  ds2782_battery: Add MODULE_DEVICE_TABLE
  bq20z75: Add MODULE_DEVICE_TABLE
  power_supply: Update power_supply_is_watt_property
  bq20z75: Add i2c retry mechanism
  bq20z75: Add optional battery detect gpio
  twl4030_charger: Make the driver atomic notifier safe
  bq27x00: Use single i2c_transfer call for property read
  bq27x00: Cleanup bq27x00_i2c_read
  bq27x00: Minor cleanups
  bq27x00: Give more specific reports on battery status
  bq27x00: Add MODULE_DEVICE_TABLE
  bq27x00: Add new properties
  bq27x00: Poll battery state
  bq27x00: Cache battery registers
  bq27x00: Add bq27000 support
  ...
2011-03-25 21:00:29 -07:00
Linus Torvalds
44bbd7ac26 Merge git://git.kernel.org/pub/scm/linux/kernel/git/agk/linux-2.6-dm
* git://git.kernel.org/pub/scm/linux/kernel/git/agk/linux-2.6-dm:
  dm stripe: implement merge method
  dm mpath: allow table load with no priority groups
  dm mpath: fail message ioctl if specified path is not valid
  dm ioctl: add flag to wipe buffers for secure data
  dm ioctl: prepare for crypt key wiping
  dm crypt: wipe keys string immediately after key is set
  dm: add flakey target
  dm: fix opening log and cow devices for read only tables
2011-03-25 20:51:44 -07:00
Linus Torvalds
24c6d02fe8 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input:
  Input: tsc2005 - fix locking issue
  Input: tsc2005 - use relative jiffies to schedule the watchdog
  Input: tsc2005 - driver should depend on GENERIC_HARDIRQS
2011-03-25 20:50:12 -07:00
Linus Torvalds
0dd61be7ec Merge branch 'irq-cleanup-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'irq-cleanup-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (23 commits)
  genirq: Expand generic show_interrupts()
  gpio: Fold irq_set_chip/irq_set_handler to irq_set_chip_and_handler
  gpio: Cleanup genirq namespace
  arm: ep93xx: Add basic interrupt info
  arm/gpio: Remove three copies of broken and racy debug code
  xtensa: Use generic show_interrupts()
  xtensa: Convert genirq namespace
  xtensa: Use generic IRQ Kconfig and set GENERIC_HARDIRQS_NO_DEPRECATED
  xtensa: Convert s6000 gpio irq_chip to new functions
  xtensa: Convert main irq_chip to new functions
  um: Use generic show_interrupts()
  um: Convert genirq namespace
  m32r: Use generic show_interrupts()
  m32r: Convert genirq namespace
  h8300: Use generic show_interrupts()
  h8300: Convert genirq namespace
  avr32: Cleanup eic_set_irq_type()
  avr32: Use generic show_interrupts()
  avr: Cleanup genirq namespace
  avr32: Use generic IRQ config, enable GENERIC_HARDIRQS_NO_DEPRECATED
  ...

Fix up trivial conflict in drivers/gpio/timbgpio.c
2011-03-25 20:24:05 -07:00
Linus Torvalds
8dd90265ac Merge branch 'sched-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'sched-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  sched, doc: Update sched-design-CFS.txt
  sched: Remove unused 'rq' variable and cpu_rq() call from alloc_fair_sched_group()
  sched.h: Fix a typo ("its")
  sched: Fix yield_to kernel-doc
2011-03-25 17:59:38 -07:00
Linus Torvalds
2a20b02c05 Merge branch 'perf-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'perf-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  perf, x86: Complain louder about BIOSen corrupting CPU/PMU state and continue
  perf, x86: P4 PMU - Read proper MSR register to catch unflagged overflows
  perf symbols: Look at .dynsym again if .symtab not found
  perf build-id: Add quirk to deal with perf.data file format breakage
  perf session: Pass evsel in event_ops->sample()
  perf: Better fit max unprivileged mlock pages for tools needs
  perf_events: Fix stale ->cgrp pointer in update_cgrp_time_from_cpuctx()
  perf top: Fix uninitialized 'counter' variable
  tracing: Fix set_ftrace_filter probe function display
  perf, x86: Fix Intel fixed counters base initialization
2011-03-25 17:53:09 -07:00
Linus Torvalds
839767e79e Merge branch 'irq-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'irq-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  genirq: Provide locked setter for chip, handler, name
  genirq: Provide a lockdep helper
  genirq; Remove the last leftovers of the old sparse irq code
2011-03-25 17:52:53 -07:00
Linus Torvalds
94df491c4a Merge branch 'core-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'core-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  futex: Fix WARN_ON() test for UP
  WARN_ON_SMP(): Allow use in if() statements on UP
  x86, dumpstack: Use %pB format specifier for stack trace
  vsprintf: Introduce %pB format specifier
  lockdep: Remove unused 'factor' variable from lockdep_stats_show()
2011-03-25 17:52:22 -07:00
Linus Torvalds
26ff6801f7 Merge branch 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  x86: DT: Cleanup namespace and call irq_set_irq_type() unconditional
  x86: DT: Fix return condition in irq_create_of_mapping()
  x86, mpparse: Move check_slot into CONFIG_X86_IO_APIC context
2011-03-25 17:51:51 -07:00
Linus Torvalds
ffbf0ab1a6 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu:
  m68k: merge m68k and m68knommu arch directories
2011-03-25 17:47:58 -07:00
Linus Torvalds
73939bb56a Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6:
  sparc32: Fix multiple RTC detections on SUN4D
2011-03-25 17:47:38 -07:00
Linus Torvalds
7c8d891c2c Merge branch 'for-linus' of git://git390.marist.edu/pub/scm/linux-2.6
* 'for-linus' of git://git390.marist.edu/pub/scm/linux-2.6:
  [S390] cmpxchg: implement cmpxchg64()
  [S390] xchg/cmpxchg: move to own header file
  [S390] ccwgroup_driver: remove duplicate members
  [S390] ccw_bus_type: make it static
  [S390] ccw_driver: remove duplicate members
  [S390] qdio: prevent handling of buffers if count is zero
  [S390] setup: register bss section as resource
  [S390] setup: simplify setup_resources()
  [S390] wire up sys_syncfs
  [S390] wire up sys_clock_adjtime
  [S390] wire up sys_open_by_handle_at
  [S390] wire up sys_name_to_handle_at
  [S390] oprofile: disable hw sampling for CONFIG_32BIT
  [S390] early: limit savesys cmd string handling
  [S390] early: Fix possible overlapping data buffer
2011-03-25 17:47:04 -07:00
Linus Torvalds
62d0086751 Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/upstream-linus
* 'upstream' of git://git.linux-mips.org/pub/scm/upstream-linus: (49 commits)
  MIPS: JZ4740: Set nand ecc offsets for the qi_lb60 board
  MIPS: JZ4740: qi_lb60: Add gpio-charger device
  MIPS: Wire up syncfs(2).
  MIPS: Hook up name_to_handle_at, open_by_handle_at and clock_adjtime syscalls.
  MIPS: VR41xx: Convert to new irq_chip functions
  MIPS: TXx9: Convert to new irq_chip functions
  MIPS: SNI: Convert to new irq_chip functions
  MIPS: Sibyte: Convert to new irq_chip functions
  MIPS: IP32: Convert to new irq_chip functions
  MIPS: IP27: Convert to new irq_chip functions
  MIPS: IP22/IP28: Convert to new irq_chip functions
  MIPS: RB532: Convert to new irq_chip functions
  MIPS: PowerTV: Convert to new irq_chip functions
  MIPS: PNX8550: Convert to new irq_chip functions
  MIPS: PNX83xx: Convert to new irq_chip functions
  MIPS: msp71xx: Convert to new irq_chip functions
  MIPS: Loongson: Convert to new irq_chip functions
  MIPS: Use generic show_interrupts()
  MIPS: SMTC: Cleanup the hook mess and use irq_data
  MIPS: SMTC: Use irq_data in smtc_forward_irq()
  ...
2011-03-25 17:46:34 -07:00
Xiaotian Feng
be4d250ab4 ipcns: fix use after free in free_ipc_ns()
commit b515498 ("userns: add a user namespace owner of ipc ns") added a
user namespace owner of ipc ns, but it also introduced a use after free in
free_ipc_ns().

Signed-off-by: Xiaotian Feng <dfeng@redhat.com>
Acked-by: "Serge E. Hallyn" <serge.hallyn@canonical.com>
Acked-by: David Howells <dhowells@redhat.com>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Cc: Daniel Lezcano <daniel.lezcano@free.fr>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-03-25 17:45:16 -07:00
Rakib Mullick
c03e3126e4 codafs: fix build break when CONFIG_PROC_SYSCTL=n
Commit 0bc825d240ab ("codafs: fix compile warning when CONFIG_SYSCTL=n")
introduces build breakage, when CONFIG_PROC_SYSCTL=n and
CONFIG_CODA_FS=y:

  fs/built-in.o: In function `init_coda':
  psdev.c:(.init.text+0xc02): undefined reference to `coda_sysctl_init'
  psdev.c:(.init.text+0xc7c): undefined reference to `coda_sysctl_clean'
  fs/built-in.o: In function `exit_coda':
  psdev.c:(.exit.text+0xa9): undefined reference to `coda_sysctl_clean'
  make: *** [.tmp_vmlinux1] Error 1

Signed-off-by: Rakib Mullick <rakib.mullick@gmail.com>
Reported-by: Ingo Molnar <mingo@elte.hu>
Acked-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-03-25 17:45:16 -07:00
Maxim Levitsky
9263412501 memstick: add driver for Ricoh R5C592 card reader
Signed-off-by: Maxim Levitsky <maximlevitsky@gmail.com>
Acked-by: Alex Dubov <oakad@yahoo.com>
Cc: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-03-25 17:45:16 -07:00
Josef Bacik
c0da7aa1a2 Btrfs: mark the bio with an error if we have a failure in dio
I noticed that dio_end_io calls the appropriate endio function with an error,
but the endio functions don't actually do anything with that error, they assume
that if there was an error then the bio will not be uptodate.  So if we had
checksum failures we would never pass back EIO.  So if there is an error in our
endio functions make sure to clear the uptodate flag on the bio.  Thanks,

Signed-off-by: Josef Bacik <josef@redhat.com>
2011-03-25 19:08:19 -04:00
Josef Bacik
98bc3149fa Btrfs: don't allocate dip->csums when doing writes
When doing direct writes we store the checksums in the ordered sum stuff in the
ordered extent for writing them when the write completes, so we don't even use
the dip->csums array.  So if we're writing, don't bother allocating dip->csums
since we won't use it anyway.  Thanks,

Signed-off-by: Josef Bacik <josef@redhat.com>
2011-03-25 19:08:18 -04:00
Josef Bacik
4e69b598f6 Btrfs: cleanup how we setup free space clusters
This patch makes the free space cluster refilling code a little easier to
understand, and fixes some things with the bitmap part of it.  Currently we
either want to refill a cluster with

1) All normal extent entries (those without bitmaps)
2) A bitmap entry with enough space

The current code has this ugly jump around logic that will first try and fill up
the cluster with extent entries and then if it can't do that it will try and
find a bitmap to use.  So instead split this out into two functions, one that
tries to find only normal entries, and one that tries to find bitmaps.

This also fixes a suboptimal thing we would do with bitmaps.  If we used a
bitmap we would just tell the cluster that we were pointing at a bitmap and it
would do the tree search in the block group for that entry every time we tried
to make an allocation.  Instead of doing that now we just add it to the clusters
group.

I tested this with my ENOSPC tests and xfstests and it survived.

Signed-off-by: Josef Bacik <josef@redhat.com>
2011-03-25 19:08:08 -04:00
Dave Chinner
0e6e847ffe xfs: stop using the page cache to back the buffer cache
Now that the buffer cache has it's own LRU, we do not need to use
the page cache to provide persistent caching and reclaim
infrastructure. Convert the buffer cache to use alloc_pages()
instead of the page cache. This will remove all the overhead of page
cache management from setup and teardown of the buffers, as well as
needing to mark pages accessed as we find buffers in the buffer
cache.

By avoiding the page cache, we also remove the need to keep state in
the page_private(page) field for persistant storage across buffer
free/buffer rebuild and so all that code can be removed. This also
fixes the long-standing problem of not having enough bits in the
page_private field to track all the state needed for a 512
sector/64k page setup.

It also removes the need for page locking during reads as the pages
are unique to the buffer and nobody else will be attempting to
access them.

Finally, it removes the buftarg address space lock as a point of
global contention on workloads that allocate and free buffers
quickly such as when creating or removing large numbers of inodes in
parallel. This remove the 16TB limit on filesystem size on 32 bit
machines as the page index (32 bit) is no longer used for lookups
of metadata buffers - the buffer cache is now solely indexed by disk
address which is stored in a 64 bit field in the buffer.

Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Alex Elder <aelder@sgi.com>
2011-03-26 09:16:45 +11:00
Dave Chinner
704b2907c2 xfs: register the inode cache shrinker before quotachecks
During mount, we can do a quotacheck that involves a bulkstat pass
on all inodes. If there are more inodes in the filesystem than can
be held in memory, we require the inode cache shrinker to run to
ensure that we don't run out of memory.

Unfortunately, the inode cache shrinker is not registered until we
get to the end of the superblock setup process, which is after a
quotacheck is run if it is needed. Hence we need to register the
inode cache shrinker earlier in the mount process so that we don't
OOM during mount. This requires that we also initialise the syncd
work before we register the shrinker, so we nee dto juggle that
around as well.

While there, make sure that we have set up the block sizes in the
VFS superblock correctly before the quotacheck is run so that any
inodes that are cached as a result of the quotacheck have their
block size fields set up correctly.

Cc: stable@kernel.org
Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Alex Elder <aelder@sgi.com>
2011-03-26 09:14:57 +11:00
Dave Chinner
7401aafd50 xfs: xfs_trans_read_buf() should return an error on failure
When inside a transaction and we fail to read a buffer,
xfs_trans_read_buf returns a null buffer pointer and no error.
xfs_do_da_buf() checks the error return, but not the buffer, and as
a result this read failure condition causes a panic when it attempts
to dereference the non-existant buffer.

Make xfs_trans_read_buf() return the same error for this situation
regardless of whether it is in a transaction or not. This means
every caller does not need to check both the error return and the
buffer before proceeding to use the buffer.

Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Alex Elder <aelder@sgi.com>
2011-03-26 09:14:44 +11:00
Dave Chinner
1bfd8d0419 xfs: introduce inode cluster buffer trylocks for xfs_iflush
There is an ABBA deadlock between synchronous inode flushing in
xfs_reclaim_inode and xfs_icluster_free. xfs_icluster_free locks the
buffer, then takes inode ilocks, whilst synchronous reclaim takes
the ilock followed by the buffer lock in xfs_iflush().

To avoid this deadlock, separate the inode cluster buffer locking
semantics from the synchronous inode flush semantics, allowing
callers to attempt to lock the buffer but still issue synchronous IO
if it can get the buffer. This requires xfs_iflush() calls that
currently use non-blocking semantics to pass SYNC_TRYLOCK rather
than 0 as the flags parameter.

This allows xfs_reclaim_inode to avoid the deadlock on the buffer
lock and detect the failure so that it can drop the inode ilock and
restart the reclaim attempt on the inode. This allows
xfs_ifree_cluster to obtain the inode lock, mark the inode stale and
release it and hence defuse the deadlock situation. It also has the
pleasant side effect of avoiding IO in xfs_reclaim_inode when it
tries to next reclaim the inode as it is now marked stale.

Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Alex Elder <aelder@sgi.com>
2011-03-26 09:13:55 +11:00
Dave Chinner
a19fb38096 vmap: flush vmap aliases when mapping fails
On 32 bit systems, vmalloc space is limited and XFS can chew through
it quickly as the vmalloc space is lazily freed. This can result in
failure to map buffers, even when there is apparently large amounts
of vmalloc space available. Hence, if we fail to map a buffer, purge
the aliases that have not yet been freed to hopefuly free up enough
vmalloc space to allow a retry to succeed.

Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Alex Elder <aelder@sgi.com>
2011-03-26 09:13:42 +11:00
Dave Chinner
8287889742 xfs: preallocation transactions do not need to be synchronous
Preallocation and hole punch transactions are currently synchronous
and this is causing performance problems in some cases. The
transactions don't need to be synchronous as we don't need to
guarantee the preallocation is persistent on disk until a
fdatasync, fsync, sync operation occurs. If the file is opened
O_SYNC or O_DATASYNC, only then should the transaction be issued
synchronously.

Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Alex Elder <aelder@sgi.com>
2011-03-26 09:13:08 +11:00
Thomas Gleixner
61a167419b tile: Use generic show_interupts()
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Chris Metcalf <cmetcalf@tilera.com>
LKML-Reference: <20110325142049.536190130@linutronix.de>
2011-03-25 23:06:34 +01:00
Thomas Gleixner
1919d641e6 tile: Convert to new irq function names
Converted with coccinelle.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Chris Metcalf <cmetcalf@tilera.com>
LKML-Reference: <20110325142049.441954268@linutronix.de>
2011-03-25 23:06:33 +01:00
Namhyung Kim
0d3db28dae kdb: add usage string of 'per_cpu' command
Signed-off-by: Namhyung Kim <namhyung@gmail.com>
Signed-off-by: Jason Wessel <jason.wessel@windriver.com>
2011-03-25 16:37:31 -05:00