Thomas Gleixner 32e475d76a sched: Expose preempt_schedule_irq() ... Tony reported that aa0d532605 ("ia64: Use preempt_schedule_irq") broke PREEMPT=n builds on ia64. Ok, wrapped my brain around it. I tripped over the magic asm foo which has a single need_resched check and schedule point for both sys call return and interrupt return. So you need the schedule_preempt_irq() for kernel preemption from interrupt return while on a normal syscall preemption a schedule would be sufficient. But using schedule_preempt_irq() is not harmful here in any way. It just sets the preempt_active bit also in cases where it would not be required. Even on preempt=n kernels adding the preempt_active bit is completely harmless. So instead of having an extra function, moving the existing one out of the ifdef PREEMPT looks like the sanest thing to do. It would also allow getting rid of various other sti/schedule/cli asm magic in other archs. Reported-and-Tested-by: Tony Luck <tony.luck@gmail.com> Fixes: aa0d532605 ("ia64: Use preempt_schedule_irq") Signed-off-by: Thomas Gleixner <tglx@linutronix.de> [slightly edited Changelog] Signed-off-by: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/alpine.DEB.2.02.1311211230030.30673@ionos.tec.linutronix.de Signed-off-by: Ingo Molnar <mingo@kernel.org>		2013-11-27 11:04:53 +01:00
..
auto_group.c
auto_group.h
clock.c
completion.c	sched: Move completion code from core.c to completion.c	2013-11-06 07:49:19 +01:00
core.c	sched: Expose preempt_schedule_irq()	2013-11-27 11:04:53 +01:00
cpuacct.c
cpuacct.h
cpupri.c
cpupri.h
cputime.c
debug.c	sched: Avoid throttle_cfs_rq() racing with period_timer stopping	2013-10-29 12:02:32 +01:00
fair.c	sched: Check sched_domain before computing group power	2013-11-19 17:01:15 +01:00
features.h	sched/numa: Resist moving tasks towards nodes with fewer hinting faults	2013-10-09 12:40:27 +02:00
idle_task.c	sched/numa: Introduce migrate_swap()	2013-10-09 12:40:46 +02:00
Makefile	sched: Move completion code from core.c to completion.c	2013-11-06 07:49:19 +01:00
proc.c
rt.c	sched/rt: Fix task_tick_rt() comment	2013-10-26 12:25:21 +02:00
sched.h	sched: Remove unnecessary iteration over sched domains to update nr_busy_cpus	2013-11-06 12:37:55 +01:00
stats.c
stats.h	sched: Micro-optimize by dropping unnecessary task_rq() calls	2013-09-25 13:51:06 +02:00
stop_task.c	sched/numa: Introduce migrate_swap()	2013-10-09 12:40:46 +02:00
wait.c	sched: Move wait code from core.c to wait.c	2013-11-06 07:49:18 +01:00