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author | Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2017-06-29 12:55:21 -0700 |
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committer | Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2017-08-17 08:08:57 -0700 |
commit | 8083f29349372d5b949dc022ae9a981edc89ac41 (patch) | |
tree | 17c9a7c7256bf37d7e55d9b12c9b4a3c2c4176f0 /drivers/auxdisplay | |
parent | dec13c42d21a96adc5d0d25510d0b59775dfd2ec (diff) | |
download | blackbird-obmc-linux-8083f29349372d5b949dc022ae9a981edc89ac41.tar.gz blackbird-obmc-linux-8083f29349372d5b949dc022ae9a981edc89ac41.zip |
exit: 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 do_exit()
with spin_lock() followed immediately by spin_unlock(). This should be
safe from a performance perspective because the lock is a per-task lock,
and this is happening only at task-exit time.
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: Ingo Molnar <mingo@kernel.org>
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>
Diffstat (limited to 'drivers/auxdisplay')
0 files changed, 0 insertions, 0 deletions