diff options
| author | Catalin Marinas <[email protected]> | 2013-05-31 16:30:58 +0100 |
|---|---|---|
| committer | Catalin Marinas <[email protected]> | 2013-06-07 17:58:31 +0100 |
| commit | 4ecf7ccb1973fd826456b6ab1e6dfafe9023c753 (patch) | |
| tree | 318c48fdfa422908da871d25d2e47903321aabe3 /lib/mpi/mpi-bit.c | |
| parent | ebd88367de80f9509bd30a09342d0a19c925b23e (diff) | |
arm64: spinlock: retry trylock operation if strex fails on free lock
An exclusive store instruction may fail for reasons other than lock
contention (e.g. a cache eviction during the critical section) so, in
line with other architectures using similar exclusive instructions
(alpha, mips, powerpc), retry the trylock operation if the lock appears
to be free but the strex reported failure.
Signed-off-by: Catalin Marinas <[email protected]>
Reported-by: Tony Thompson <[email protected]>
Acked-by: Will Deacon <[email protected]>
Diffstat (limited to 'lib/mpi/mpi-bit.c')
0 files changed, 0 insertions, 0 deletions