diff options
| author | Anton Blanchard <anton@samba.org> | 2011-03-09 14:38:42 +1100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2011-03-23 13:04:05 -0700 |
| commit | c1ccb911a49d7bd7f5b8233c51b1f5a40ddaba47 (patch) | |
| tree | 4d1effd7d36d10fbc3b2e9f90e8d7b93d589ebdc /arch/powerpc/include | |
| parent | 0a5bdee8013fd9ac665185f47fc0b00e000c7d85 (diff) | |
perf, powerpc: Handle events that raise an exception without overflowing
commit 0837e3242c73566fc1c0196b4ec61779c25ffc93 upstream.
Events on POWER7 can roll back if a speculative event doesn't
eventually complete. Unfortunately in some rare cases they will
raise a performance monitor exception. We need to catch this to
ensure we reset the PMC. In all cases the PMC will be 256 or less
cycles from overflow.
Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
LKML-Reference: <20110309143842.6c22845e@kryten>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'arch/powerpc/include')
| -rw-r--r-- | arch/powerpc/include/asm/reg.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/reg.h b/arch/powerpc/include/asm/reg.h index 125fc1ad665..7626fa78e1f 100644 --- a/arch/powerpc/include/asm/reg.h +++ b/arch/powerpc/include/asm/reg.h @@ -880,6 +880,7 @@ #define PV_970 0x0039 #define PV_POWER5 0x003A #define PV_POWER5p 0x003B +#define PV_POWER7 0x003F #define PV_970FX 0x003C #define PV_630 0x0040 #define PV_630p 0x0041 |