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| author | Will Deacon <will.deacon@arm.com> | 2015-05-29 14:26:59 +0100 |
|---|---|---|
| committer | Will Deacon <will.deacon@arm.com> | 2015-07-27 15:28:52 +0100 |
| commit | 0bc671d3f4bee9c31110d096ada0de52380e693d (patch) | |
| tree | 63c5120264072fa4599fc6fe0f92f6a044d48f0c /tools/perf/scripts/python/export-to-postgresql.py | |
| parent | e9a4b795652f654a7870727e5333c1b709b8736c (diff) | |
arm64: cmpxchg: avoid "cc" clobber in ll/sc routines
We can perform the cmpxchg comparison using eor and cbnz which avoids
the "cc" clobber for the ll/sc case and consequently for the LSE case
where we may have to fall-back on the ll/sc code at runtime.
Reviewed-by: Steve Capper <steve.capper@arm.com>
Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Diffstat (limited to 'tools/perf/scripts/python/export-to-postgresql.py')
0 files changed, 0 insertions, 0 deletions