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time: Define dummy functions for the generic sched clock

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When we try to compile a clocksource driver with the COMPILE_TEST option,
we can't select the GENERIC_SCHED_CLOCK because the sched_clock() symbol
will be duplicated with the one defined for the x86.

In order to fix that, we don't select the GENERIC_SCHED_CLOCK in the
driver Kconfig's file but we define some empty functions for the different
symbols in order to prevent the unresolved ones.

This patch fixes the COMPILE_TEST option for the compile test coverage for
the clocksource drivers. Without this patch, we can't add the COMPILE_TEST
option for the clocksource drivers using the GENERIC_SCHED_CLOCK.

Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
This commit is contained in:
Daniel Lezcano 2015-10-29 18:33:47 +01:00
parent a0d2216ec0
commit 364eba4b3a
1 changed files with 9 additions and 3 deletions
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12
include/linux/sched_clock.h
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@ -10,11 +10,17 @@
#ifdef CONFIG_GENERIC_SCHED_CLOCK
extern void sched_clock_postinit(void);
#else
static inline void sched_clock_postinit(void) { }
#endif
extern void sched_clock_register(u64 (*read)(void), int bits,
unsigned long rate);
#else
static inline void sched_clock_postinit(void) { }
static inline void sched_clock_register(u64 (*read)(void), int bits,
unsigned long rate)
{
;
}
#endif
#endif