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| author | Will Deacon <will.deacon@arm.com> | 2015-02-10 06:03:15 +0300 |
|---|---|---|
| committer | Will Deacon <will.deacon@arm.com> | 2015-07-27 17:28:51 +0300 |
| commit | 81bb5c6420635dfd058c210bd342c29c95ccd145 (patch) | |
| tree | efd296b41a78c1199f9f76f3a9dd02b240023502 /tools/perf/scripts/python/call-graph-from-postgresql.py | |
| parent | c09d6a04d17d730b0463207a26ece082772b59ee (diff) | |
| download | linux-81bb5c6420635dfd058c210bd342c29c95ccd145.tar.xz | |
arm64: locks: patch in lse instructions when supported by the CPU
On CPUs which support the LSE atomic instructions introduced in ARMv8.1,
it makes sense to use them in preference to ll/sc sequences.
This patch introduces runtime patching of our locking functions so that
LSE atomic instructions are used for spinlocks and rwlocks.
Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Diffstat (limited to 'tools/perf/scripts/python/call-graph-from-postgresql.py')
0 files changed, 0 insertions, 0 deletions