The x86 timer interrupt handler is the only handler not traced in the
irq/irq_handler_{entry|exit} trace events.

Add tracepoints to the interrupt handler to trace it.

Signed-off-by: Vaibhav Nagarnaik <vnagarnaik@google.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Michael Rubin <mrubin@google.com>
Cc: David Sharp <dhsharp@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

Replace the bubble sort in sanitize_e820_map() with a call to the generic
kernel sort function to avoid pathological performance with large maps.

On large (thousands of entries) E820 maps, the previous code took minutes
to run; with this change it's now milliseconds.

Signed-off-by: Mike Ditto <mditto@google.com>
Cc: Stefan Assmann <sassmann@kpanic.de>
Cc: Nancy Yuen <yuenn@google.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

Cc: Ed Wildgoose <git@wildgooses.com>
Cc: Ed Wildgoose <kernel@wildgooses.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

This new driver replaces the old PCEngines Alix 2/3 LED driver with a new
driver that controls the LEDs through the leds-gpio driver.  The old
driver accessed GPIOs directly, which created a conflict and prevented
also loading the cs5535-gpio driver to read other GPIOs on the Alix board.
 With this new driver, we hook into leds-gpio which in turn uses GPIO to
control the LEDs and therefore it's possible to control both the LEDs and
access onboard GPIOs

Driver is moved to platform/geode and any other geode initialisation
modules should move here also.

This driver is inspired by leds-net5501.c by Alessandro Zummo.

Ideally, leds-net5501.c should also be moved to platform/geode.
Additionally the driver relies on parts of the patch: 7f131cf3ed ("leds:
leds-alix2c - take port address from MSR) by Daniel Mack to perform
detection of the Alix board.

Signed-off-by: Ed Wildgoose <kernel@wildgooses.com>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Cc: Daniel Mack <daniel@caiaq.de>
Reviewed-by: Grant Likely <grant.likely@secretlab.ca>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Richard Purdie <rpurdie@rpsys.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

On x86_32 casting the unsigned int result of get_random_int() to long may
result in a negative value.  On x86_32 the range of mmap_rnd() therefore
was -255 to 255.  The 32bit mode on x86_64 used 0 to 255 as intended.

The bug was introduced by 675a081 ("x86: unify mmap_{32|64}.c") in January
2008.

Signed-off-by: Ludwig Nussel <ludwig.nussel@suse.de>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Harvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

This makes the iris driver use the platform API, so it is properly exposed
in /sys.

[akpm@linux-foundation.org: remove commented-out code, add missing space to printk, clean up code layout]
Signed-off-by: Shérab <Sebastien.Hinderer@ens-lyon.org>
Cc: Len Brown <lenb@kernel.org>
Cc: Matthew Garrett <mjg@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

Add support for Aspire 1410 BIOS v1.3314.  Fixes the following error:

acerhdf: unknown (unsupported) BIOS version Acer/Aspire 1410/v1.3314,
please report, aborting!

Signed-off-by: Clay Carpenter <claycarpenter@gmail.com>
Signed-off-by: Peter Feuerer <peter@piie.net>
Cc: Matthew Garrett <mjg@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

Since the commit below which added O_PATH support to the *at() calls, the
error return for readlink/readlinkat for the empty pathname has switched
from ENOENT to EINVAL:

  commit 65cfc6722361570bfe255698d9cd4dccaf47570d
  Author: Al Viro <viro@zeniv.linux.org.uk>
  Date:   Sun Mar 13 15:56:26 2011 -0400

    readlinkat(), fchownat() and fstatat() with empty relative pathnames

This is both unexpected for userspace and makes readlink/readlinkat
inconsistant with all other interfaces; and inconsistant with our stated
return for these pathnames.

As the readlinkat call does not have a flags parameter we cannot use the
AT_EMPTY_PATH approach used in the other calls.  Therefore expose whether
the original path is infact entry via a new user_path_at_empty() path
lookup function.  Use this to determine whether to default to EINVAL or
ENOENT for failures.

BugLink: http://bugs.launchpad.net/bugs/817187
Signed-off-by: Andy Whitcroft <apw@canonical.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

The parameter's origin type is long.  On an i386 architecture, it can
easily be larger than 0x80000000, causing this function to convert it to a
sign-extended u64 type.  Change the type to unsigned long so we get the
correct result.

[akpm@linux-foundation.org: build fix]
Signed-off-by: hank <pyu@redhat.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: John Stultz <john.stultz@linaro.org>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

Fix kconfig unmet dependency warning.  BACKLIGHT_CLASS_DEVICE depends on
BACKLIGHT_LCD_SUPPORT, so select the latter along with the former.

warning: (DRM_RADEON_KMS && DRM_I915 && STUB_POULSBO && FB_BACKLIGHT && PANEL_SHARP_LS037V7DW01 && PANEL_ACX565AKM && USB_APPLEDISPLAY && FB_OLPC_DCON && ASUS_LAPTOP && SONY_LAPTOP && THINKPAD_ACPI && EEEPC_LAPTOP && ACPI_ASUS && ACPI_CMPC && SAMSUNG_Q10) selects BACKLIGHT_CLASS_DEVICE which has unmet direct dependencies (HAS_IOMEM && BACKLIGHT_LCD_SUPPORT)

Signed-off-by: Randy Dunlap <rdunlap@xenotime.net>
Cc: David Airlie <airlied@linux.ie>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

When no floppy is found the module code can be released while a timer
function is pending or about to be executed.

CPU0                                  CPU1
      floppy_init()
timer_softirq()
   spin_lock_irq(&base->lock);
   detach_timer();
   spin_unlock_irq(&base->lock);
   -> Interrupt
del_timer();
        return -ENODEV;
                                      module_cleanup();
   <- EOI
   call_timer_fn();
   OOPS

Use del_timer_sync() to prevent this.

Signed-off-by: Carsten Emde <C.Emde@osadl.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Jens Axboe <axboe@kernel.dk>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

Merge remote-tracking branch 'kvmtool/master'

Conflicts:
include/net/9p/9p.h

Merge remote-tracking branch 'moduleh/module.h-split'

Conflicts:
arch/arm/mach-bcmring/mm.c
arch/powerpc/mm/tlb_nohash.c
drivers/s390/char/vmur.c
drivers/scsi/libfc/fc_lport.c
include/linux/dmaengine.h

Merge remote-tracking branch 'writeback/next'

Merge remote-tracking branch 'tmem/linux-next'

Merge remote-tracking branch 'staging/staging-next'

Conflicts:
drivers/staging/comedi/drivers/ni_labpc.c
drivers/staging/rtl8192e/r8192E_core.c
drivers/staging/xgifb/XGI_main_26.c

Merge remote-tracking branch 'usb/usb-next'

Merge remote-tracking branch 'tty/tty-next'

Conflicts:
arch/powerpc/include/asm/udbg.h
arch/powerpc/kernel/udbg.c
drivers/tty/serial/8250.c

Merge remote-tracking branch 'driver-core/driver-core-next'

Conflicts:
arch/arm/plat-mxc/devices.c

Merge remote-tracking branch 'regmap/for-next'

Conflicts:
drivers/mfd/wm831x-spi.c

Merge remote-tracking branch 'namespace/master'

Merge remote-tracking branch 'sysctl/master'

Merge remote-tracking branch 'percpu/for-next'

Merge remote-tracking branch 'edac-amd/for-next'

Merge remote-tracking branch 'xen-two/linux-next'

Merge remote-tracking branch 'xen/upstream/xen'

Merge remote-tracking branch 'ptrace/ptrace'

Merge remote-tracking branch 'kvm/linux-next'

Conflicts:
include/linux/kvm.h

Merge remote-tracking branch 'rcu/rcu/next'

Merge remote-tracking branch 'tip/auto-latest'

Merge remote-tracking branch 'gpio/gpio/next'

Merge remote-tracking branch 'spi/spi/next'

Conflicts:
drivers/spi/spi-pl022.c

Merge remote-tracking branch 'i7300_edac/linux_next'

Conflicts:
arch/x86/kernel/cpu/mcheck/mce.c

Merge remote-tracking branch 'i7core_edac/linux_next'

Merge remote-tracking branch 'fsnotify/for-next'

Merge remote-tracking branch 'apm/for-next'

Merge remote-tracking branch 'pm/linux-next'

Conflicts:
arch/arm/mach-shmobile/board-ap4evb.c

Merge remote-tracking branch 'trivial/for-next'

Conflicts:
Documentation/PCI/pci.txt
drivers/net/Kconfig

Merge remote-tracking branch 'osd/linux-next'

Merge remote-tracking branch 'iommu/next'

Merge remote-tracking branch 'watchdog/master'

Merge remote-tracking branch 'agp/agp-next'

Merge remote-tracking branch 'security/next'

Conflicts:
fs/ocfs2/xattr.c

Merge remote-tracking branch 'voltage/for-next'

Merge remote-tracking branch 'omap_dss2/for-next'

Conflicts:
arch/arm/mach-omap2/board-4430sdp.c
drivers/video/omap/lcd_apollon.c
drivers/video/omap/lcd_ldp.c
drivers/video/omap/lcd_overo.c

Merge remote-tracking branch 'viafb/viafb-next'

Merge remote-tracking branch 'fbdev/fbdev-next'

Conflicts:
drivers/video/Kconfig

Merge remote-tracking branch 'mfd/for-next'

Conflicts:
drivers/mfd/max8997.c

Merge remote-tracking branch 'md/for-next'

Merge remote-tracking branch 'slab/for-next'

Merge remote-tracking branch 'kgdb/kgdb-next'

Merge remote-tracking branch 'mmc/mmc-next'

Merge remote-tracking branch 'leds/for-mm'

Conflicts:
drivers/leds/Kconfig

Merge remote-tracking branch 'battery/master'

Merge branch 'quilt/device-mapper'

Merge remote-tracking branch 'block/for-next'

Revert "Input: gpio_keys - use of_property_read_u32()"

This reverts commit d6ba97c9806bff7c91fe3ae5fec83488b1a56f73.

Merge remote-tracking branch 'input/next'

Merge branch 'quilt/rr'

Merge remote-tracking branch 'cpufreq/next'

Merge remote-tracking branch 'sound-asoc/for-next'

Merge remote-tracking branch 'sound/for-next'

Conflicts:
arch/mips/alchemy/devboards/db1x00/platform.c
sound/mips/Kconfig

Merge remote-tracking branch 'crypto/master'

Merge remote-tracking branch 'l2-mtd/master'

Conflicts:
arch/arm/mach-at91/board-usb-a9260.c

Merge remote-tracking branch 'bluetooth/master'

Merge remote-tracking branch 'wireless/master'

Conflicts:
drivers/net/wireless/iwlwifi/iwl-pci.c
drivers/net/wireless/rt2x00/rt2800usb.c
drivers/net/wireless/wl12xx/main.c

Merge remote-tracking branch 'net/master'

Conflicts:
MAINTAINERS
arch/powerpc/configs/40x/hcu4_defconfig
drivers/net/Kconfig
drivers/net/ethernet/broadcom/bnx2x/bnx2x_link.c
drivers/net/wireless/iwlwifi/iwl-pci.c
drivers/net/wireless/iwlwifi/iwl-trans-tx-pcie.c
drivers/net/wireless/rt2x00/rt2800usb.c
drivers/net/wireless/wl12xx/main.c
drivers/s390/cio/qdio_main.c

Merge remote-tracking branch 'slave-dma/next'

Merge remote-tracking branch 'scsi/master'

Merge remote-tracking branch 'ibft/master'

Merge remote-tracking branch 'swiotlb/master'

Merge remote-tracking branch 'ieee1394/for-next'

Merge remote-tracking branch 'infiniband/for-next'

Merge remote-tracking branch 'libata/NEXT'

Merge remote-tracking branch 'kconfig/for-next'

Merge remote-tracking branch 'kbuild/for-next'

Merge remote-tracking branch 'docs/docs-move'

Merge branch 'quilt/kernel-doc'

Merge remote-tracking branch 'hwmon-staging/hwmon-next'

Merge branch 'quilt/jdelvare-hwmon'

Merge remote-tracking branch 'bjdooks-i2c/next-i2c'

Merge branch 'quilt/i2c'

Merge remote-tracking branch 'hid/for-next'

Merge remote-tracking branch 'xfs/master'

Conflicts:
fs/xfs/xfs_aops.c
fs/xfs/xfs_super.c

Merge remote-tracking branch 'v9fs/for-next'

Conflicts:
net/9p/trans_virtio.c

Merge remote-tracking branch 'ocfs2/linux-next'

Merge remote-tracking branch 'nfsd/nfsd-next'

Merge remote-tracking branch 'logfs/master'

Merge remote-tracking branch 'gfs2/master'

Merge remote-tracking branch 'ext4/dev'

Merge remote-tracking branch 'ceph/for-next'

Merge remote-tracking branch 'xtensa/master'

Merge remote-tracking branch 'unicore32/unicore32'

Merge remote-tracking branch 'tile/master'

Merge remote-tracking branch 'rmobile/rmobile-latest'

Merge remote-tracking branch 'sh/sh-latest'

Merge remote-tracking branch 's390/features'

Merge remote-tracking branch '52xx-and-virtex/powerpc/next'

Merge remote-tracking branch 'powerpc/next'

Merge remote-tracking branch 'mips/mips-for-linux-next'