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| author | Paul E. McKenney | 2017-06-29 21:47:04 +0200 |
|---|---|---|
| committer | Paul E. McKenney | 2017-08-17 17:06:44 +0200 |
| commit | dec13c42d21a96adc5d0d25510d0b59775dfd2ec (patch) | |
| tree | 03793a9146da912adad6b5b661a3595730b6eaf4 /kernel/exit.c | |
| parent | sched: Replace spin_unlock_wait() with lock/unlock pair (diff) | |
| download | kernel-qcow2-linux-dec13c42d21a96adc5d0d25510d0b59775dfd2ec.tar.gz kernel-qcow2-linux-dec13c42d21a96adc5d0d25510d0b59775dfd2ec.tar.xz kernel-qcow2-linux-dec13c42d21a96adc5d0d25510d0b59775dfd2ec.zip | |
completion: Replace spin_unlock_wait() with lock/unlock pair
There is no agreed-upon definition of spin_unlock_wait()'s semantics,
and it appears that all callers could do just as well with a lock/unlock
pair. This commit therefore replaces the spin_unlock_wait() call in
completion_done() with spin_lock() followed immediately by spin_unlock().
This should be safe from a performance perspective because the lock
will be held only the wakeup happens really quickly.
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Will Deacon <will.deacon@arm.com>
Cc: Alan Stern <stern@rowland.harvard.edu>
Cc: Andrea Parri <parri.andrea@gmail.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Reviewed-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Diffstat (limited to 'kernel/exit.c')
0 files changed, 0 insertions, 0 deletions