linux-kernel - [PATCH] timers: Fix up get_target

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Message-Id: <20190603132944.9726-1-peterx@redhat.com>
Date:   Mon,  3 Jun 2019 21:29:44 +0800
From:   Peter Xu <peterx@...hat.com>
To:     linux-kernel@...r.kernel.org
Cc:     peterx@...hat.com, Thomas Gleixner <tglx@...utronix.de>,
        John Stultz <john.stultz@...aro.org>,
        Stephen Boyd <sboyd@...nel.org>,
        Luiz Capitulino <lcapitulino@...hat.com>,
        Marcelo Tosatti <mtosatti@...hat.com>
Subject: [PATCH] timers: Fix up get_target_base() to use old base properly

get_target_base() in the timer code is not using the "base" parameter
at all.  My gut feeling is that instead of removing that extra
parameter, what we really want to do is "return the old base if it
does not suite for a new one".

CC: Thomas Gleixner <tglx@...utronix.de>
CC: John Stultz <john.stultz@...aro.org>
CC: Stephen Boyd <sboyd@...nel.org>
CC: Luiz Capitulino <lcapitulino@...hat.com>
CC: Marcelo Tosatti <mtosatti@...hat.com>
CC: linux-kernel@...r.kernel.org
Signed-off-by: Peter Xu <peterx@...hat.com>
---
 kernel/time/timer.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kernel/time/timer.c b/kernel/time/timer.c
index 343c7ba33b1c..6ff6ffd2c719 100644
--- a/kernel/time/timer.c
+++ b/kernel/time/timer.c
@@ -868,7 +868,7 @@ get_target_base(struct timer_base *base, unsigned tflags)
 	    !(tflags & TIMER_PINNED))
 		return get_timer_cpu_base(tflags, get_nohz_timer_target());
 #endif
-	return get_timer_this_cpu_base(tflags);
+	return base;
 }
 
 static inline void forward_timer_base(struct timer_base *base)
-- 
2.17.1