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| author | Vineet Gupta <[email protected]> | 2015-08-07 07:31:39 +0000 |
|---|---|---|
| committer | Vineet Gupta <[email protected]> | 2015-08-07 08:26:16 +0000 |
| commit | 10971638701dedadb58c88ce4d31c9375b224ed6 (patch) | |
| tree | b210f8710277b0ae74ea5c8143c3c9f6b5dc5bd1 /tools/perf/scripts/python | |
| parent | ARC: Make pt_regs regs unsigned (diff) | |
| download | kernel-10971638701dedadb58c88ce4d31c9375b224ed6.tar.gz kernel-10971638701dedadb58c88ce4d31c9375b224ed6.zip | |
ARCv2: spinlock/rwlock/atomics: reduce 1 instruction in exponential backoff
The increment of delay counter was 2 instructions:
Arithmatic Shfit Left (ASL) + set to 1 on overflow
This can be done in 1 using ROtate Left (ROL)
Suggested-by: Nigel Topham <[email protected]>
Cc: Peter Zijlstra (Intel) <[email protected]>
Cc: [email protected]
Signed-off-by: Vineet Gupta <[email protected]>
Diffstat (limited to 'tools/perf/scripts/python')
0 files changed, 0 insertions, 0 deletions