sched/rt: Document scheduler related skip-resched-check sites

Create a distinction between scheduler related preempt_enable_no_resched()
calls and the nearly one hundred other places in the kernel that do not
want to reschedule, for one reason or another.

This distinction matters for -rt, where the scheduler and the non-scheduler
preempt models (and checks) are different. For upstream it's purely
documentational.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/n/tip-gs88fvx2mdv5psnzxnv575ke@git.kernel.org
Signed-off-by: Ingo Molnar <mingo@elte.hu>

1 files changed, 3 insertions, 3 deletions

diff --git a/kernel/sched/core.c b/kernel/sched/core.c
index 73022395c00e..643cc37fcb23 100644
--- a/kernel/sched/core.c
+++ b/kernel/sched/core.c
@@ -3220,7 +3220,7 @@ need_resched:
 
         post_schedule(rq);
 
-        preempt_enable_no_resched();
+        sched_preempt_enable_no_resched();
         if (need_resched())
                 goto need_resched;
 }
@@ -3253,7 +3253,7 @@ EXPORT_SYMBOL(schedule);
  */
 void __sched schedule_preempt_disabled(void)
 {
-        preempt_enable_no_resched();
+        sched_preempt_enable_no_resched();
         schedule();
         preempt_disable();
 }
@@ -4486,7 +4486,7 @@ SYSCALL_DEFINE0(sched_yield)
         __release(rq->lock);
         spin_release(&rq->lock.dep_map, 1, _THIS_IP_);
         do_raw_spin_unlock(&rq->lock);
-        preempt_enable_no_resched();
+        sched_preempt_enable_no_resched();
 
         schedule();