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authorAnton Blanchard <anton@samba.org>2011-03-09 14:38:42 +1100
committerIngo Molnar <mingo@elte.hu>2011-03-16 14:04:13 +0100
commit0837e3242c73566fc1c0196b4ec61779c25ffc93 (patch)
treedb77cdc93b99b1433b73a461f44543983af746bc /arch/powerpc/include/asm
parent7d5d02dadd43db7f829775e404e82019c5d5586f (diff)
downloadlinaro-lsk-0837e3242c73566fc1c0196b4ec61779c25ffc93.tar.gz
perf, powerpc: Handle events that raise an exception without overflowing
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> Cc: <stable@kernel.org> # as far back as it applies cleanly LKML-Reference: <20110309143842.6c22845e@kryten> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/powerpc/include/asm')
-rw-r--r--arch/powerpc/include/asm/reg.h1
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