From b6f8a92c9ca835b4a079ecee8433d0d110398448 Mon Sep 17 00:00:00 2001 From: Nicolas Pitre Date: Wed, 14 Dec 2016 15:06:13 -0800 Subject: [PATCH] posix-timers: give lazy compilers some help optimizing code away The OpenRISC compiler (so far) fails to optimize away a large portion of code containing a reference to posix_timer_event in alarmtimer.c when CONFIG_POSIX_TIMERS is unset. Let's give it a direct clue to let the build succeed. This fixes [linux-next:master 6682/7183] alarmtimer.c:undefined reference to `posix_timer_event' reported by kbuild test robot. Signed-off-by: Nicolas Pitre Cc: Thomas Gleixner Cc: Josh Triplett Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- kernel/time/alarmtimer.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/kernel/time/alarmtimer.c b/kernel/time/alarmtimer.c index 9b08ca391aed..3921cf7fea8e 100644 --- a/kernel/time/alarmtimer.c +++ b/kernel/time/alarmtimer.c @@ -516,7 +516,8 @@ static enum alarmtimer_restart alarm_handle_timer(struct alarm *alarm, spin_lock_irqsave(&ptr->it_lock, flags); if ((ptr->it_sigev_notify & ~SIGEV_THREAD_ID) != SIGEV_NONE) { - if (posix_timer_event(ptr, 0) != 0) + if (IS_ENABLED(CONFIG_POSIX_TIMERS) && + posix_timer_event(ptr, 0) != 0) ptr->it_overrun++; } -- 2.39.5