The old wait_on_atomic_t() is going to get removed, use the more
flexible wait_var_event() API instead.
And while there, fix a bug and add the missing wakeup...
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: James Hogan <jhogan@kernel.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
atomic_set(&task->mm->context.fp_mode_switching, 0);
preempt_enable();
+ wake_up_var(&task->mm->context.fp_mode_switching);
+
return 0;
}
* If an FP mode switch is currently underway, wait for it to
* complete before proceeding.
*/
- wait_on_atomic_t(¤t->mm->context.fp_mode_switching,
- atomic_t_wait, TASK_KILLABLE);
+ wait_var_event(¤t->mm->context.fp_mode_switching,
+ !atomic_read(¤t->mm->context.fp_mode_switching));
if (!used_math()) {
/* First time FP context user. */