leandrof/linux
1
0
Fork 0
forked from Minki/linux
Code Issues Pull Requests Packages Projects Releases Wiki Activity

m68knommu: fix compare race in sched related code

Browse Source 
The interrupts must be disabled before considering the need resched
bit of the task struct and they have to be disabled before calling
schedule()

Signed-off-by: Sebastian Siewior <bigeasy@linutronix.de>
Signed-off-by: Greg Ungerer <gerg@uclinux.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Sebastian Siewior 2008-05-01 12:17:49 +10:00 committed by Linus Torvalds
parent 0042a1f7ec
commit 6c5a7d504f
1 changed files with 2 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
arch/m68knommu/platform/coldfire/entry.S
View File

@ -103,6 +103,7 @@ ret_from_signal:
addql #4,%sp
ret_from_exception:
move #0x2700,%sr /* disable intrs */
btst #5,%sp@(PT_SR) /* check if returning to kernel */
jeq Luser_return /* if so, skip resched, signals */
@ -156,6 +157,7 @@ Lreturn:
Lwork_to_do:
movel %a0@(TI_FLAGS),%d1 /* get thread_info->flags */
move #0x2000,%sr /* enable intrs again */
btst #TIF_NEED_RESCHED,%d1
jne reschedule