Commit 733ce725 authored Jan 27, 2017 by Paul Gortmaker Committed by Ingo Molnar Feb 01, 2017

sched/clock: Add dummy clear_sched_clock_stable() stub function



In commit:

  acb04058 ("sched/clock: Fix hotplug crash")

the PARISC code gained a call to this function.

However the prototype for it is within a CONFIG_HAVE_UNSTABLE_SCHED_CLOCK=y
 #ifdef/#endif.  That, combined with this:

  arch/parisc/Kconfig:    select HAVE_UNSTABLE_SCHED_CLOCK if SMP

means that PARISC can have it either enabled or disabled, resulting
in the following build fail:

  arch/parisc/kernel/setup.c:180:2: error: implicit declaration of
  function 'clear_sched_clock_stable' [-Werror=implicit-function-declaration]

Add a no-op stub for the non-SMP case to prevent this.

Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Fixes: acb04058 ("sched/clock: Fix hotplug crash")
Link: http://lkml.kernel.org/r/20170127173816.22733-1-paul.gortmaker@windriver.com


Signed-off-by: Ingo Molnar <mingo@kernel.org>

parent b672592f

include/linux/sched.h

+4 −0

Original line number	Diff line number	Diff line
		@@ -2511,6 +2511,10 @@ static inline void sched_clock_tick(void)
		{
		}

		static inline void clear_sched_clock_stable(void)
		{
		}

		static inline void sched_clock_idle_sleep_event(void)
		{
		}

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