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Eric B Munson ad5d5292f1 powerpc/oprofile: Handle events that raise an exception without overflowing 
Commit 0837e3242c fixes a situation on POWER7
where events can roll back if a specualtive event doesn't actually complete.
This can raise a performance monitor exception.  We need to catch this to ensure
that we reset the PMC.  In all cases the PMC will be less than 256 cycles from
overflow.

This patch lifts Anton's fix for the problem in perf and applies it to oprofile
as well.

Signed-off-by: Eric B Munson <emunson@mgebm.net>
Cc: <stable@kernel.org> # as far back as it applies cleanly
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2011-05-26 13:38:57 +10:00
..
alpha Remove unused PROC_CHANGE_PENALTY constant 2011-05-25 08:39:43 -07:00
arm Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/cjb/mmc 2011-05-25 16:55:55 -07:00
avr32 mm: now that all old mmu_gather code is gone, remove the storage 2011-05-25 08:39:16 -07:00
blackfin Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/vapier/blackfin 2011-05-25 15:34:14 -07:00
cris cris: convert old cpumask API into new one 2011-05-25 08:39:39 -07:00
frv mm: now that all old mmu_gather code is gone, remove the storage 2011-05-25 08:39:16 -07:00
h8300 genirq: Remove the now obsolete config options and select statements 2011-03-30 14:13:23 +02:00
ia64 mm: now that all old mmu_gather code is gone, remove the storage 2011-05-25 08:39:16 -07:00
m32r lib: consolidate DEBUG_STACK_USAGE option 2011-05-25 08:39:54 -07:00
m68k mm: now that all old mmu_gather code is gone, remove the storage 2011-05-25 08:39:16 -07:00
microblaze mm: now that all old mmu_gather code is gone, remove the storage 2011-05-25 08:39:16 -07:00
mips lib: consolidate DEBUG_STACK_USAGE option 2011-05-25 08:39:54 -07:00
mn10300 mn10300: convert old cpumask API into new one 2011-05-25 08:39:39 -07:00
parisc Remove unused PROC_CHANGE_PENALTY constant 2011-05-25 08:39:43 -07:00
powerpc powerpc/oprofile: Handle events that raise an exception without overflowing 2011-05-26 13:38:57 +10:00
s390 mm: now that all old mmu_gather code is gone, remove the storage 2011-05-25 08:39:16 -07:00
score lib: consolidate DEBUG_STACK_USAGE option 2011-05-25 08:39:54 -07:00
sh lib: consolidate DEBUG_STACK_USAGE option 2011-05-25 08:39:54 -07:00
sparc lib: consolidate DEBUG_STACK_USAGE option 2011-05-25 08:39:54 -07:00
tile Merge git://git.kernel.org/pub/scm/linux/kernel/git/cmetcalf/linux-tile 2011-05-25 15:35:32 -07:00
um lib: consolidate DEBUG_STACK_USAGE option 2011-05-25 08:39:54 -07:00
unicore32 lib: consolidate DEBUG_STACK_USAGE option 2011-05-25 08:39:54 -07:00
x86 Merge branch 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging 2011-05-25 16:52:50 -07:00
xtensa mm: now that all old mmu_gather code is gone, remove the storage 2011-05-25 08:39:16 -07:00
.gitignore
Kconfig mm, powerpc: move the RCU page-table freeing into generic code 2011-05-25 08:39:16 -07:00