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| author |   Davidlohr Bueso <dave@stgolabs.net> | 2021-09-19 22:20:30 -0700 |
|---|---|---|
| committer |   Peter Zijlstra <peterz@infradead.org> | 2021-10-07 13:51:07 +0200 |
| commit | c78416d122243c92992a1d1063f17ddd0bc80e6c (patch) | |
| tree | 91ddd15c967aec7d0f1631b65b9ca8a696feb570 /scripts/mod | |
| parent | Merge branch 'tip/locking/urgent' (diff) | |
| download | wireguard-linux-c78416d122243c92992a1d1063f17ddd0bc80e6c.tar.xz wireguard-linux-c78416d122243c92992a1d1063f17ddd0bc80e6c.zip | |
locking/rwbase: Optimize rwbase_read_trylock
Instead of a full barrier around the Rmw insn, micro-optimize
for weakly ordered archs such that we only provide the required
ACQUIRE semantics when taking the read lock.
Signed-off-by: Davidlohr Bueso <dbueso@suse.de>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Acked-by: Waiman Long <longman@redhat.com>
Link: https://lkml.kernel.org/r/20210920052031.54220-2-dave@stgolabs.net
Diffstat (limited to 'scripts/mod')
0 files changed, 0 insertions, 0 deletions