diff options
| author | Ben Gardon <bgardon@google.com> | 2021-02-02 10:57:13 -0800 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2021-02-04 05:27:43 -0500 |
| commit | a09a689a534183c48f200bc2de1ae61ae9c462ad (patch) | |
| tree | 6d22a4c3a93f604b29d200434191480124e166f8 /kernel/sched | |
| parent | 26128cb6c7e6731fe644c687af97733adfdb5ee9 (diff) | |
sched: Add needbreak for rwlocks
Contention awareness while holding a spin lock is essential for reducing
latency when long running kernel operations can hold that lock. Add the
same contention detection interface for read/write spin locks.
CC: Ingo Molnar <mingo@redhat.com>
CC: Will Deacon <will@kernel.org>
Acked-by: Peter Zijlstra <peterz@infradead.org>
Acked-by: Davidlohr Bueso <dbueso@suse.de>
Acked-by: Waiman Long <longman@redhat.com>
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Ben Gardon <bgardon@google.com>
Message-Id: <20210202185734.1680553-8-bgardon@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'kernel/sched')
0 files changed, 0 insertions, 0 deletions