sched: Consolidate open coded preemptible() checks

preempt_schedule() and preempt_schedule_context() open
code their preemptability checks.

Use the standard API instead for consolidation.

Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Li Zhong <zhong@linux.vnet.ibm.com>
Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Alex Shi <alex.shi@intel.com>
Cc: Paul Turner <pjt@google.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Vincent Guittot <vincent.guittot@linaro.org>

2 files changed, 2 insertions, 5 deletions

diff --git a/kernel/context_tracking.c b/kernel/context_tracking.c
index 383f8231e436..942835c12ae5 100644
--- a/kernel/context_tracking.c
+++ b/kernel/context_tracking.c
@@ -87,10 +87,9 @@ void user_enter(void)
  */
 void __sched notrace preempt_schedule_context(void)
 {
-        struct thread_info *ti = current_thread_info();
         enum ctx_state prev_ctx;
 
-        if (likely(ti->preempt_count || irqs_disabled()))
+        if (likely(!preemptible()))
                 return;
 
         /*
diff --git a/kernel/sched/core.c b/kernel/sched/core.c
index b7c32cb7bfeb..3fb7acee7326 100644
--- a/kernel/sched/core.c
+++ b/kernel/sched/core.c
@@ -2510,13 +2510,11 @@ void __sched schedule_preempt_disabled(void)
  */
 asmlinkage void __sched notrace preempt_schedule(void)
 {
-        struct thread_info *ti = current_thread_info();
-
         /*
          * If there is a non-zero preempt_count or interrupts are disabled,
          * we do not want to preempt the current task. Just return..
          */
-        if (likely(ti->preempt_count || irqs_disabled()))
+        if (likely(!preemptible()))
                 return;
 
         do {