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| author |   Will Deacon <will.deacon@arm.com> | 2015-02-10 03:03:15 +0000 |
|---|---|---|
| committer | Will Deacon <will.deacon@arm.com> | 2015-07-27 15:28:51 +0100 |
| commit | 81bb5c6420635dfd058c210bd342c29c95ccd145 (patch) | |
| tree | efd296b41a78c1199f9f76f3a9dd02b240023502 /security | |
| parent | arm64: atomics: patch in lse instructions when supported by the CPU (diff) | |
| download | linux-dev-81bb5c6420635dfd058c210bd342c29c95ccd145.tar.xz linux-dev-81bb5c6420635dfd058c210bd342c29c95ccd145.zip | |
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 'security')
0 files changed, 0 insertions, 0 deletions