diff options
| author | Anton Blanchard <anton@samba.org> | 2009-03-31 20:12:44 +0000 |
|---|---|---|
| committer | Paul Mackerras <paulus@samba.org> | 2009-04-07 15:18:59 +1000 |
| commit | 0559f0a7611bdd336b7297dce179f793b565f148 (patch) | |
| tree | 9236baea733c3a4f27036988ec16fba8f0ca3897 /arch/powerpc/include | |
| parent | 1f8737aab39e15684bf6b6b53586b7c89a269f79 (diff) | |
| download | lwn-0559f0a7611bdd336b7297dce179f793b565f148.tar.gz lwn-0559f0a7611bdd336b7297dce179f793b565f148.zip | |
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.h | 2 |
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 |