kernel_optimize_test/arch
Ian Campbell cd52e17ea8 xen: ensure timer tick is resumed even on CPU driving the resume
The core suspend/resume code is run from stop_machine on CPU0 but
parts of the suspend/resume machinery (including xen_arch_resume) are
run on whichever CPU happened to schedule the xenwatch kernel thread.

As part of the non-core resume code xen_arch_resume is called in order
to restart the timer tick on non-boot processors. The boot processor
itself is taken care of by core timekeeping code.

xen_arch_resume uses smp_call_function which does not call the given
function on the current processor. This means that we can end up with
one CPU not receiving timer ticks if the xenwatch thread happened to
be scheduled on CPU > 0.

Use on_each_cpu instead of smp_call_function to ensure the timer tick
is resumed everywhere.

Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Acked-by: Jeremy Fitzhardinge <jeremy@goop.org>
Cc: Stable Kernel <stable@kernel.org> # .32.x
2010-06-03 09:34:04 +01:00
..
alpha asm-generic: remove ARCH_HAS_SG_CHAIN in scatterlist.h 2010-05-27 09:12:54 -07:00
arm Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/sameo/mfd-2.6 2010-05-30 09:13:08 -07:00
avr32 avr32: use asm-generic/scatterlist.h 2010-05-27 09:12:54 -07:00
blackfin blackfin: use use asm-generic/scatterlist.h 2010-05-27 09:12:55 -07:00
cris cris: use asm-generic/scatterlist.h 2010-05-27 09:12:55 -07:00
frv FRV: ARCH_KMALLOC_MINALIGN was already defined 2010-05-28 10:17:21 -07:00
h8300 h8300: use asm-generic/scatterlist.h 2010-05-27 09:12:55 -07:00
ia64 ia64: revert __node_random addition 2010-05-30 10:08:03 -07:00
m32r m32r: use use asm-generic/scatterlist.h 2010-05-27 09:12:55 -07:00
m68k Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k 2010-05-27 10:19:19 -07:00
m68knommu arch/m68knommu/platform/68360/commproc.c: Checkpatch cleanup 2010-05-24 14:44:25 +10:00
microblaze asm-generic: remove ARCH_HAS_SG_CHAIN in scatterlist.h 2010-05-27 09:12:54 -07:00
mips mips: use use asm-generic/scatterlist.h 2010-05-27 09:12:55 -07:00
mn10300 mn10300: use asm-generic/scatterlist.h 2010-05-27 09:12:55 -07:00
parisc Merge branch 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/kyle/parisc-2.6 2010-05-30 09:02:02 -07:00
powerpc tracing: fix for tracepoint API change 2010-05-28 10:20:14 -07:00
s390 Merge branch 'for-linus' of git://git390.marist.edu/pub/scm/linux-2.6 2010-05-27 10:48:46 -07:00
score asm-generic: remove ISA_DMA_THRESHOLD in scatterlist.h 2010-05-27 09:12:54 -07:00
sh asm-generic: add NEED_SG_DMA_LENGTH to define sg_dma_len() 2010-05-27 09:12:54 -07:00
sparc Merge branch 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip 2010-05-27 15:23:47 -07:00
um Merge branch 'bkl/ioctl' of git://git.kernel.org/pub/scm/linux/kernel/git/frederic/random-tracing 2010-05-24 08:01:10 -07:00
x86 xen: ensure timer tick is resumed even on CPU driving the resume 2010-06-03 09:34:04 +01:00
xtensa xtensa: use use asm-generic/scatterlist.h 2010-05-27 09:12:55 -07:00
.gitignore
Kconfig hw-breakpoints: Separate constraint space for data and instruction breakpoints 2010-05-01 04:32:11 +02:00