The fancy mutex_lock fastpath has too many indirections to track the caller
hence all contentions are perceived to come from mutex_lock().

Avoid this by explicitly not using the fastpath code (it was disabled already
anyway).
Signed-off-by: NPeter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: NIngo Molnar <mingo@elte.hu>

It is possible for the current->curr_chain_key to become inconsistent with the
current index if the chain fails to validate.  The end result is that future
lock_acquire() operations may inadvertently fail to find a hit in the cache
resulting in a new node being added to the graph for every acquire.
Signed-off-by: NGregory Haskins <ghaskins@novell.com>
Signed-off-by: NPeter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: NIngo Molnar <mingo@elte.hu>

Both /proc/lockdep and /proc/lock_stat output may loop infinitely.

When a read() requests an amount of data smaller than the amount of data
that the seq_file's foo_show() outputs, the output starts looping and
outputs the "stuck" element's data infinitely.  There may be multiple
sequential calls to foo_start(), foo_next()/foo_show(), and foo_stop()
for a single open with sequential read of the file.  The _start() does not
have to start with the 0th element and _show() might be called multiple
times in a row for the same element for a given open/read of the seq_file.

Also header output should not be happening in _start().  All output should
be in _show(), which SEQ_START_TOKEN is meant to help.  Having output in
_start() may also negatively impact seq_file's seq_read() and traverse()
accounting.
Signed-off-by: NTim Pepper <lnxninja@linux.vnet.ibm.com>
Signed-off-by: NPeter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: NIngo Molnar <mingo@elte.hu>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Al Viro <viro@ftp.linux.org.uk>

Signed-off-by: NPeter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: NIngo Molnar <mingo@elte.hu>

Make sure the mmc_spi driver can build without CONFIG_BLOCK.
Issue noted by "Avuton Olrich" <avuton@gmail.com> and randconfig.

While that won't be a common configuration, sometimes embedded
boards use SDIO to interface WLAN or Bluetooth chips (vs some
parallel interface), and don't provide an MMC/SD socket for use
with flash memory cards.
Signed-off-by: NDavid Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

* git://git.kernel.org/pub/scm/linux/kernel/git/tglx/linux-2.6-x86:
  x86: force timer broadcast on late AMD C1E detection
  x86: move local APIC timer init to the end of start_secondary()
  clockevents: introduce force broadcast notifier
  x86: fix missing include for vsyscall

The call to napi_disable() in the PCI shutdown handler is problematic,
and is aggravated by the new NAPI.
Also, make sure watchdog timer doesn't go off.
Signed-off-by: NStephen Hemminger <shemminger@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

The 64bit SMP bootup is slightly different to the 32bit one. It enables
the boot CPU local APIC timer before all CPUs are brought up. Some AMD C1E
systems have the C1E feature flag only set in the secondary CPU. Due to
the early enable of the boot CPU local APIC timer the APIC timer is
registered as a fully functional device. When we detect the wreckage during
the bringup of the secondary CPU, we need to force the boot CPU into
broadcast mode. 

Check the C1E caused APIC timer disable, when the secondary APIC timer is
initialized. If the boot CPU APIC timer was registered as a functional
clock event device, then fix this up and utilize the
CLOCK_EVT_NOTIFY_BROADCAST_FORCE mechanism to force the already
registered boot CPU APIC timer into broadcast mode.

Tested by force injecting the failure mode.
Signed-off-by: NThomas Gleixner <tglx@linutronix.de>

Preparatory patch for the AMD C1E wreckage fixup.
Signed-off-by: NThomas Gleixner <tglx@linutronix.de>

The 64bit SMP bootup is slightly different to the 32bit one. It enables
the boot CPU local APIC timer before all CPUs are brought up. Some AMD C1E
systems have the C1E feature flag only set in the secondary CPU. Due to
the early enable of the boot CPU local APIC timer the APIC timer is
registered as a fully functional device. When we detect the wreckage during
the bringup of the secondary CPU, we need to force the boot CPU into
broadcast mode. 

Add a new notifier reason and implement the force broadcast in the clock
events layer.
Signed-off-by: NThomas Gleixner <tglx@linutronix.de>

 > Maybe I just picked a bad time to try, but...
 > 
 > arch/x86/kernel/alternative.c: In function 'apply_alternatives':
 > arch/x86/kernel/alternative.c:191: error: 'VSYSCALL_START' undeclared (first use in this function)
 > arch/x86/kernel/alternative.c:191: error: (Each undeclared identifier is reported only once
 > arch/x86/kernel/alternative.c:191: error: for each function it appears in.)
 > arch/x86/kernel/alternative.c:191: error: 'VSYSCALL_END' undeclared (first use in this function)
 > make[1]: *** [arch/x86/kernel/alternative.o] Error 1
 > make: *** [arch/x86/kernel] Error 2

Try this.

Include missing header for vsyscall.
Signed-off-by: NDave Jones <davej@redhat.com>
Signed-off-by: NThomas Gleixner <tglx@linutronix.de>

* 'release' of git://lm-sensors.org/kernel/mhoffman/hwmon-2.6: (53 commits)
  hwmon: (vt8231) fix sparse warning
  hwmon: (sis5595) fix sparse warning
  hwmon: (w83627hf) don't assume bank 0
  hwmon: (w83627hf) Fix setting fan min right after driver load
  hwmon: (w83627hf) De-macro sysfs callback functions
  hwmon: Add new combined driver for FSC chips
  hwmon: (ibmpex) Release IPMI user if hwmon registration fails
  hwmon: (dme1737) Add sch311x support
  hwmon: (dme1737) group functions logically
  hwmon: (dme1737) cleanups
  hwmon: IBM power meter driver
  hwmon: (coretemp) Add support for Celeron 4xx
  hwmon: (lm87) Disable VID when it should be
  hwmon: (w83781d) Add individual alarm and beep files
  hwmon: VRM is not read from registers
  MAINTAINERS: update hwmon subsystem git trees
  hwmon: Fix the code examples in documentation
  hwmon: update sysfs interface document - error handling
  hwmon: (thmc50) Fix a debug message
  hwmon: (thmc50) Don't create temp3 if not enabled
  ...

- killed paranoid NULL Pointer check
- human readable LED states
- support for "Eicon DIVA USB 4.0" (0x071d/0x1005)
Signed-off-by: NMartin Bachem <info@colognechip.com>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

if your mask is host-endian, you should apply it after le64_to_cpu();
if it's little-endian - before.  Doing both (for the same mask and
little-endian value) is broken.
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

all uses of and almost all assignments to lro_desc->tcp_ack assume that it's
net-endian; one converts net-endian to host-endian and sticks it in
lro_desc->tcp_ack.
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

... should be unsigned int
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

deal with signedness of the stuff passed to set_bit() et.al.
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

copy_to_user() into on-stack array
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

... since that sucker is not 32bit-only and on 64bit skb->tail is an
offset, not a pointer.
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

Signed-off-by: NMark M. Hoffman <mhoffman@lightlink.com>

Signed-off-by: NMark M. Hoffman <mhoffman@lightlink.com>

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid: (21 commits)
  HID: hidraw_connect() memleak fix
  HID: add hidraw interface
  USB HID: provide hook for hidraw write()
  HID: hiddev: Add 32bit ioctl compatibilty
  HID: Add GeneralTouch touchscreen to the blacklist
  HID: add support for Microsoft Wireless Laser Keyboard 6000
  Input: add KEY_LOGOFF
  USBHID: report descriptor fix for MacBook JIS keyboard
  HID: trivial fixes in hid-debug
  HID: fix input mapping for Microsoft Ergonomic Keyboard
  HID: use hid-plff driver for GreenAsia 0e8f:0003 devices
  USBHID: Add HID_QUIRK_NOGET for ELO Touch Screen 2700 display
  HID: enable hiddev for the SantaRosa MacBookPro IR receiver
  USBHID: add CM109 device to blacklist
  HID: Report usage codes of keys as EV_MSC scancode events
  HID: ignore all non-LED usages in output fields in hid-input
  HID: fix whitespace damage
  HID: add support for Thrustmaster FGT Force Feedback wheel
  HID: minimal autosuspend support for USB HID devices
  HID: add support for Microsoft Natural Ergonomic Keyboard 4000
  ...

* git://git.infradead.org/mtd-2.6:
  [MTD] fix mtdconcat for subpage-write NAND
  [MTD] [OneNAND] Avoid deadlock in erase callback; release chip lock first.
  [MTD] [OneNAND] Return only negative error codes
  [MTD] [OneNAND] Synchronize block locking operations
  UBI: return correct error code
  UBI: remove useless inlines
  UBI: fix atomic LEB change problems
  UBI: use byte hexdump
  UBI: do not use vmalloc on I/O path
  UBI: allocate memory with GFP_NOFS
  UBI: use linux print_hex_dump(), not home-grown one
  UBI: don't use array index before testing if it is negative
  UBI: add more prints
  UBI: fix sparse warnings
  UBI: fix leak in ubi_scan_erase_peb

* 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/sparc-2.6: (23 commits)
  [SPARC64]: virt_to_real_irq_table --> virt_irq_table
  [SPARC64]: virt_irq --> bucket mapping no longer necessary
  [SPARC64]: Kill ugly __bucket() macro.
  [SPARC64]: Kill ugly __irq_ino() macro.
  [SPARC64]: Only use bypass accesses to INO buckets.
  [SPARC64]: Update defconfig.
  [SPARC64]: Use sun4v VIRQ interfaces as intended.
  [SPARC64]: Allocate ivector_table dynamically.
  [SPARC64]: Access ivector_table[] using physical addresses.
  [SPARC64]: Make IVEC pointers 64-bit.
  [SPARC64]: Fix register usage in xor_raid_4().
  [SPARC64]: Kill pci_memspace_mask.
  [SPARC64]: Consolidate MSI support code.
  [SPARC/64]: Move of_platform_driver initialisations: arch/sparc{,64}.
  [SPARC64]: Fix bugs in SYSV IPC handling in 64-bit processes.
  [SPARC/64]: Prepare to remove of_platform_driver name.
  [SPARC32]: Add irqflags.h to sparc32 and use it from generic code.
  [SPARC64]: beautify vmlinux.lds
  [SPARC]: beautify vmlinux.lds
  [SPARC64]: Enable MSI on sun4u Fire PCI-E controllers.
  ...