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authorAnton Blanchard <anton@samba.org>2009-03-31 20:12:44 +0000
committerPaul Mackerras <paulus@samba.org>2009-04-07 15:18:59 +1000
commit0559f0a7611bdd336b7297dce179f793b565f148 (patch)
tree9236baea733c3a4f27036988ec16fba8f0ca3897 /arch/powerpc/include
parent1f8737aab39e15684bf6b6b53586b7c89a269f79 (diff)
powerpc/pseries: Add dispatch dispersion statistics
PHYP tells us how often a shared processor dispatch changed physical cpus. This can highlight performance problems caused by the hypervisor. Signed-off-by: Anton Blanchard <anton@samba.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
Diffstat (limited to 'arch/powerpc/include')
-rw-r--r--arch/powerpc/include/asm/lppaca.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/powerpc/include/asm/lppaca.h b/arch/powerpc/include/asm/lppaca.h
index 68235f7e4a8f..d2a65e8ca6ae 100644
--- a/arch/powerpc/include/asm/lppaca.h
+++ b/arch/powerpc/include/asm/lppaca.h
@@ -125,7 +125,7 @@ struct lppaca {
// NOTE: This value will ALWAYS be zero for dedicated processors and
// will NEVER be zero for shared processors (ie, initialized to a 1).
volatile u32 yield_count; // PLIC increments each dispatchx00-x03
- u32 reserved6;
+ volatile u32 dispersion_count; // dispatch changed phys cpu x04-x07
volatile u64 cmo_faults; // CMO page fault count x08-x0F
volatile u64 cmo_fault_time; // CMO page fault time x10-x17
u8 reserved7[104]; // Reserved x18-x7F