linux-kernel - [tip:sched/core] sched/preempt: Remove PREEMPT_ACTIVE unmasking off in

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Message-ID: <tip-3e51f3c4004c9b01f66da03214a3e206f5ed627b@git.kernel.org>
Date:	Tue, 19 May 2015 00:17:59 -0700
From:	tip-bot for Frederic Weisbecker <tipbot@...or.com>
To:	linux-tip-commits@...r.kernel.org
Cc:	torvalds@...ux-foundation.org, hpa@...or.com, peterz@...radead.org,
	linux-kernel@...r.kernel.org, mingo@...nel.org, tglx@...utronix.de,
	fweisbec@...il.com
Subject: [tip:sched/core] sched/preempt:
  Remove PREEMPT_ACTIVE unmasking off in_atomic()

Commit-ID:  3e51f3c4004c9b01f66da03214a3e206f5ed627b
Gitweb:     http://git.kernel.org/tip/3e51f3c4004c9b01f66da03214a3e206f5ed627b
Author:     Frederic Weisbecker <fweisbec@...il.com>
AuthorDate: Tue, 12 May 2015 16:41:51 +0200
Committer:  Ingo Molnar <mingo@...nel.org>
CommitDate: Tue, 19 May 2015 08:39:13 +0200

sched/preempt: Remove PREEMPT_ACTIVE unmasking off in_atomic()

Now that PREEMPT_ACTIVE implies PREEMPT_DISABLE_OFFSET, ignoring
PREEMPT_ACTIVE from in_atomic() check isn't useful anymore.

Signed-off-by: Frederic Weisbecker <fweisbec@...il.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@...radead.org>
Cc: Linus Torvalds <torvalds@...ux-foundation.org>
Cc: Peter Zijlstra <peterz@...radead.org>
Cc: Thomas Gleixner <tglx@...utronix.de>
Link: http://lkml.kernel.org/r/1431441711-29753-7-git-send-email-fweisbec@gmail.com
Signed-off-by: Ingo Molnar <mingo@...nel.org>
---
 include/linux/preempt.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/linux/preempt.h b/include/linux/preempt.h
index 4057696..a1a00e1 100644
--- a/include/linux/preempt.h
+++ b/include/linux/preempt.h
@@ -112,7 +112,7 @@
  * used in the general case to determine whether sleeping is possible.
  * Do not use in_atomic() in driver code.
  */
-#define in_atomic()	((preempt_count() & ~PREEMPT_ACTIVE) != 0)
+#define in_atomic()	(preempt_count() != 0)
 
 /*
  * Check whether we were atomic before we did preempt_disable():
--
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