From 733ce725aa4bfa9063be053bfe7f4597d76f0dd1 Mon Sep 17 00:00:00 2001 From: Paul Gortmaker Date: Fri, 27 Jan 2017 12:38:16 -0500 Subject: [PATCH] sched/clock: Add dummy clear_sched_clock_stable() stub function In commit: acb04058de494 ("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 Signed-off-by: Peter Zijlstra (Intel) Cc: Linus Torvalds Cc: Mike Galbraith Cc: Peter Zijlstra Cc: Thomas Gleixner Fixes: acb04058de49 ("sched/clock: Fix hotplug crash") Link: http://lkml.kernel.org/r/20170127173816.22733-1-paul.gortmaker@windriver.com Signed-off-by: Ingo Molnar --- include/linux/sched.h | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/include/linux/sched.h b/include/linux/sched.h index d17645402767..e2ed46d3ed71 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -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) { }