linux-kernel - [PATCH] lib/Kconfig: make PREEMPT_COUNT depend on PREEMPT in DEBUG_ATOMIC

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Date:	Fri, 12 Feb 2016 10:14:22 -0800
From:	Yang Shi <yang.shi@...aro.org>
To:	mingo@...hat.com, peterz@...radead.org
Cc:	linux-kernel@...r.kernel.org, linaro-kernel@...ts.linaro.org,
	yang.shi@...aro.org
Subject: [PATCH] lib/Kconfig: make PREEMPT_COUNT depend on PREEMPT in DEBUG_ATOMIC_SLEEP

When building non-preempt kernel (PREEMPT_NONE), PREEMPT_COUNT is still enabled
if DEBUG_ATOMIC_SLEEP is enabled. But, it sounds not make sense to have
PREEMPT_COUNT set in non-preempt kernel.

So, make PREEMPT_COUNT depend on PREEMPT here.

Signed-off-by: Yang Shi <yang.shi@...aro.org>
---
 lib/Kconfig.debug | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug
index ecb9e75..a5b6e11 100644
--- a/lib/Kconfig.debug
+++ b/lib/Kconfig.debug
@@ -1075,7 +1075,7 @@ config DEBUG_LOCKDEP
 
 config DEBUG_ATOMIC_SLEEP
 	bool "Sleep inside atomic section checking"
-	select PREEMPT_COUNT
+	select PREEMPT_COUNT if PREEMPT
 	depends on DEBUG_KERNEL
 	help
 	  If you say Y here, various routines which may sleep will become very
-- 
2.0.2