diff options
| author | Will Deacon <will.deacon@arm.com> | 2015-03-31 14:11:24 +0100 |
|---|---|---|
| committer | Will Deacon <will.deacon@arm.com> | 2015-07-27 15:28:51 +0100 |
| commit | c8366ba0fb65063b6b4f69c7af1ea74152435590 (patch) | |
| tree | 5e1b7a728baa9428185c8339d33344cf35037b8d /tools/perf/scripts/python/export-to-postgresql.py | |
| parent | 084f903727e1c3a61d6bcdaeeed30bddc6d7f65a (diff) | |
arm64: xchg: 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 xchg primitives so that
the LSE swp instruction (yes, you read right!) is used instead.
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