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author | Samuel Thibault <samuel.thibault@labri.fr> | 2005-05-21 17:50:15 +0200 |
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committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-05-21 10:46:48 -0700 |
commit | 10f02d1c59e55f529140dda3a92f0099d748451c (patch) | |
tree | 6b5a5804503401624171aff65b09ff022a9f0103 /arch/i386/kernel/signal.c | |
parent | 9636273dae265b9354b861b373cd43cd76a6d0fe (diff) |
[PATCH] spin_unlock_bh() and preempt_check_resched()
In _spin_unlock_bh(lock):
do { \
_raw_spin_unlock(lock); \
preempt_enable(); \
local_bh_enable(); \
__release(lock); \
} while (0)
there is no reason for using preempt_enable() instead of a simple
preempt_enable_no_resched()
Since we know bottom halves are disabled, preempt_schedule() will always
return at once (preempt_count!=0), and hence preempt_check_resched() is
useless here...
This fixes it by using "preempt_enable_no_resched()" instead of the
"preempt_enable()", and thus avoids the useless preempt_check_resched()
just before re-enabling bottom halves.
Signed-off-by: Samuel Thibault <samuel.thibault@ens-lyon.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'arch/i386/kernel/signal.c')
0 files changed, 0 insertions, 0 deletions