| commit | e9a4b795652f654a7870727e5333c1b709b8736c | [log] [tgz] |
|---|---|---|
| author | Will Deacon <will.deacon@arm.com> | Thu May 14 18:05:50 2015 +0100 |
| committer | Will Deacon <will.deacon@arm.com> | Mon Jul 27 15:28:52 2015 +0100 |
| tree | ade6676d032ea31c5f24c210d778a857b16a37a5 | |
| parent | c342f78217e822d2178265b0b1de232eeb717149 [diff] |
arm64: cmpxchg_dbl: 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 cmpxchg_double primitives so that the LSE casp instruction is used instead. Reviewed-by: Catalin Marinas <catalin.marinas@arm.com> Signed-off-by: Will Deacon <will.deacon@arm.com>