linux/kernel/spinlock.c, branch v2.6.13Mirror of https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/
https://git.shady.money/linux/atom?h=v2.6.132005-05-21T17:46:48Z[PATCH] spin_unlock_bh() and preempt_check_resched()2005-05-21T17:46:48ZSamuel Thibaultsamuel.thibault@labri.fr2005-05-21T15:50:15Zurn:sha1:10f02d1c59e55f529140dda3a92f0099d748451c
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>
Linux-2.6.12-rc22005-04-16T22:20:36ZLinus Torvaldstorvalds@ppc970.osdl.org2005-04-16T22:20:36Zurn:sha1:1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!