linux/drivers
Linus Torvalds 620e77533f Merge branch 'core-rcu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull RCU changes from Ingo Molnar:

 0. 'idle RCU':

     Adds RCU APIs that allow non-idle tasks to enter RCU idle mode and
     provides x86 code to make use of them, allowing RCU to treat
     user-mode execution as an extended quiescent state when the new
     RCU_USER_QS kernel configuration parameter is specified.  (Work is
     in progress to port this to a few other architectures, but is not
     part of this series.)

 1.  A fix for a latent bug that has been in RCU ever since the addition
     of CPU stall warnings.  This bug results in false-positive stall
     warnings, but thus far only on embedded systems with severely
     cut-down userspace configurations.

 2.  Further reductions in latency spikes for huge systems, along with
     additional boot-time adaptation to the actual hardware.

     This is a large change, as it moves RCU grace-period initialization
     and cleanup, along with quiescent-state forcing, from softirq to a
     kthread.  However, it appears to be in quite good shape (famous
     last words).

 3.  Updates to documentation and rcutorture, the latter category
     including keeping statistics on CPU-hotplug latencies and fixing
     some initialization-time races.

 4.  CPU-hotplug fixes and improvements.

 5.  Idle-loop fixes that were omitted on an earlier submission.

 6.  Miscellaneous fixes and improvements

In certain RCU configurations new kernel threads will show up (rcu_bh,
rcu_sched), showing RCU processing overhead.

* 'core-rcu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (90 commits)
  rcu: Apply micro-optimization and int/bool fixes to RCU's idle handling
  rcu: Userspace RCU extended QS selftest
  x86: Exit RCU extended QS on notify resume
  x86: Use the new schedule_user API on userspace preemption
  rcu: Exit RCU extended QS on user preemption
  rcu: Exit RCU extended QS on kernel preemption after irq/exception
  x86: Exception hooks for userspace RCU extended QS
  x86: Unspaghettize do_general_protection()
  x86: Syscall hooks for userspace RCU extended QS
  rcu: Switch task's syscall hooks on context switch
  rcu: Ignore userspace extended quiescent state by default
  rcu: Allow rcu_user_enter()/exit() to nest
  rcu: Settle config for userspace extended quiescent state
  rcu: Make RCU_FAST_NO_HZ handle adaptive ticks
  rcu: New rcu_user_enter_after_irq() and rcu_user_exit_after_irq() APIs
  rcu: New rcu_user_enter() and rcu_user_exit() APIs
  ia64: Add missing RCU idle APIs on idle loop
  xtensa: Add missing RCU idle APIs on idle loop
  score: Add missing RCU idle APIs on idle loop
  parisc: Add missing RCU idle APIs on idle loop
  ...
2012-10-01 10:16:42 -07:00
..
accessibility
acpi ACPI / PM: Use KERN_DEBUG when no power resources are found 2012-09-14 20:54:44 +02:00
amba
ata ahci: Add identifiers for ASM106x devices 2012-09-13 00:24:29 -04:00
atm
auxdisplay
base Merge remote-tracking branches 'regmap/topic/cache' and 'regmap/topic/irq' into regmap-next 2012-09-22 12:02:05 -04:00
bcma
block Merge git://git.infradead.org/users/willy/linux-nvme 2012-09-29 10:31:52 -07:00
bluetooth Bluetooth: Add support for Apple vendor-specific devices 2012-08-27 08:36:42 -05:00
cdrom
char drm/i915: fix hsw uncached pte 2012-08-17 09:21:35 +02:00
clk ARM: 7537/1: clk: Fix release in devm_clk_put() 2012-09-19 21:51:27 +01:00
clocksource cs5535-clockevt: typo, it's MFGPT, not MFPGT 2012-08-21 16:45:02 -07:00
connector
cpufreq Merge branch 'for-3.6-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq 2012-09-19 11:00:07 -07:00
cpuidle cpuidle: Prevent null pointer dereference in cpuidle_coupled_cpu_notify 2012-08-17 19:37:08 +02:00
crypto Merge git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 2012-09-12 07:14:17 +08:00
dca
devfreq
dio
dma Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2012-10-01 09:06:36 -07:00
edac sb_edac: Avoid overflow errors at memory size calculation 2012-09-25 07:38:20 -03:00
eisa
extcon Merge remote-tracking branches 'regulator/topic/core', 'regulator/topic/bypass', 'regulator/topic/tol', 'regulator/topic/drivers' and 'regulator/topic/tps6586x' into regulator-next 2012-09-28 14:45:07 +01:00
firewire
firmware
gpio gpio-lpc32xx: Fix value handling of gpio_direction_output() 2012-09-24 21:56:01 +02:00
gpu Merge branch 'drm-nouveau-fixes' of git://anongit.freedesktop.org/git/nouveau/linux-2.6 into drm-fixes 2012-09-27 17:58:53 +10:00
hid Merge branch 'multitouch' into for-linus 2012-10-01 14:38:54 +02:00
hsi
hv
hwmon hwmon: (fam15h_power) Tweak runavg_range on resume 2012-09-23 20:54:09 +02:00
hwspinlock hwspinlock/core: move the dereference below the NULL test 2012-09-10 13:19:25 +03:00
i2c Merge branch 'i2c-embedded/for-current' of git://git.pengutronix.de/git/wsa/linux 2012-09-14 17:55:57 -07:00
ide ide: fix generic_ide_suspend/resume Oops 2012-08-21 14:54:42 -07:00
idle intel_idle: Check cpu_idle_get_driver() for NULL before dereferencing it. 2012-08-17 19:37:14 +02:00
ieee802154
iio drivers/iio/adc/at91_adc.c: adjust inconsistent IS_ERR and PTR_ERR 2012-08-27 21:15:25 +01:00
infiniband Merge remote-tracking branch 'tip/core/rcu' into next.2012.09.25b 2012-09-25 10:03:56 -07:00
input Merge branches 'from-henrik', 'hidraw', 'logitech', 'picolcd', 'ps3', 'uclogic', 'wacom' and 'wiimote' into for-linus 2012-10-01 14:36:26 +02:00
iommu iommu/amd: Fix wrong assumption in iommu-group specific code 2012-09-28 16:14:44 +02:00
isdn mISDN: Fix wrong usage of flush_work_sync while holding locks 2012-09-13 14:58:54 -04:00
leds leds: renesas: fix error handling 2012-08-13 14:34:02 +08:00
lguest
macintosh
md A few fixes for problems discovered during the 3.6 cycle. 2012-09-28 10:00:01 -07:00
media Merge branch 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media 2012-08-21 16:54:38 -07:00
memory
memstick
message
mfd Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2012-10-01 09:06:36 -07:00
misc drivers/misc/sgi-xp/xpc_uv.c: SGI XPC fails to load when cpu 0 is out of IRQ resources 2012-08-21 16:45:03 -07:00
mmc Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2012-10-01 09:06:36 -07:00
mtd mtdchar: fix offset overflow detection 2012-09-28 12:13:46 -07:00
net Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2012-10-01 09:06:36 -07:00
nfc
nubus
of dt: introduce for_each_available_child_of_node, of_get_next_available_child 2012-08-20 02:16:00 -07:00
oprofile
parisc
parport
pci Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2012-10-01 09:06:36 -07:00
pcmcia
pinctrl pinctrl/nomadik: add kp_b_2 keyboard function group list 2012-08-17 11:09:58 +02:00
platform thinkpad_acpi: buffer overflow in fan_get_status() 2012-09-13 16:46:31 -04:00
pnp
power
pps
ps3
ptp
pwm pwm: pwm-tiehrpwm: Fix conflicting channel period setting 2012-09-10 17:04:38 +02:00
rapidio rapidio/tsi721: fix unused variable compiler warning 2012-08-21 16:45:03 -07:00
regulator Merge remote-tracking branches 'regulator/topic/core', 'regulator/topic/bypass', 'regulator/topic/tol', 'regulator/topic/drivers' and 'regulator/topic/tps6586x' into regulator-next 2012-09-28 14:45:07 +01:00
remoteproc
rpmsg rpmsg: fix dma_free_coherent dev parameter 2012-09-12 12:03:57 +03:00
rtc drivers/rtc/rtc-twl.c: ensure all interrupts are disabled during probe 2012-09-17 15:00:38 -07:00
s390 s390/dasd: fix read unit address configuration loop 2012-09-17 09:58:21 +02:00
sbus
scsi Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2012-10-01 09:06:36 -07:00
sfi
sh sh: pfc: Fix up GPIO mux type reconfig case. 2012-09-25 11:51:05 +09:00
sn
spi Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2012-10-01 09:06:36 -07:00
ssb
staging This is the remaining MFD fixes for 3.6, with 5 pending fixes: 2012-09-16 13:22:21 -07:00
target Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2012-10-01 09:06:36 -07:00
tc
thermal
tty tty: serial: imx: don't reinit clock in imx_setup_ufcr() 2012-09-05 12:44:44 -07:00
uio
usb USB: Fix race condition when removing host controllers 2012-09-27 09:17:49 -07:00
uwb
vfio vfio: Fix virqfd release race 2012-09-21 10:48:28 -06:00
vhost tcm_vhost: Fix vhost_scsi_target structure alignment 2012-08-20 14:52:11 -07:00
video Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2012-10-01 09:06:36 -07:00
virt
virtio
vlynq
vme
w1 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2012-10-01 09:06:36 -07:00
watchdog watchdog: move the dereference below the NULL test 2012-09-10 17:33:17 +02:00
xen xen/m2p: do not reuse kmap_op->dev_bus_addr 2012-09-12 11:21:40 -04:00
zorro
Kconfig
Makefile