| commit | 81bb5c6420635dfd058c210bd342c29c95ccd145 | [log] [tgz] |
|---|---|---|
| author | Will Deacon <will.deacon@arm.com> | Tue Feb 10 03:03:15 2015 +0000 |
| committer | Will Deacon <will.deacon@arm.com> | Mon Jul 27 15:28:51 2015 +0100 |
| tree | efd296b41a78c1199f9f76f3a9dd02b240023502 | |
| parent | c09d6a04d17d730b0463207a26ece082772b59ee [diff] |
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>