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| author | Frederic Weisbecker <fweisbec@gmail.com> | 2015-08-11 18:03:23 +0200 |
|---|---|---|
| committer | Frederic Weisbecker <fweisbec@gmail.com> | 2016-02-13 15:34:28 +0100 |
| commit | 5fd7a09cfb8c6852f596c1f8c891c6158395250e (patch) | |
| tree | c136e50a60a4328e7779d01c3972d477883dc39f /kernel/sched | |
| parent | 36f90b0a2ddd60823fe193a85e60ff1906c2a9b3 (diff) | |
| download | linux-5fd7a09cfb8c6852f596c1f8c891c6158395250e.tar.bz2 | |
atomic: Export fetch_or()
Export fetch_or() that's implemented and used internally by the
scheduler. We are going to use it for NO_HZ so make it generally
available.
Reviewed-by: Chris Metcalf <cmetcalf@ezchip.com>
Cc: Christoph Lameter <cl@linux.com>
Cc: Chris Metcalf <cmetcalf@ezchip.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Luiz Capitulino <lcapitulino@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Rik van Riel <riel@redhat.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Diffstat (limited to 'kernel/sched')
| -rw-r--r-- | kernel/sched/core.c | 14 |
1 files changed, 0 insertions, 14 deletions
diff --git a/kernel/sched/core.c b/kernel/sched/core.c index 9503d590e5ef..7142feb4b92d 100644 --- a/kernel/sched/core.c +++ b/kernel/sched/core.c @@ -453,20 +453,6 @@ static inline void init_hrtick(void) } #endif /* CONFIG_SCHED_HRTICK */ -/* - * cmpxchg based fetch_or, macro so it works for different integer types - */ -#define fetch_or(ptr, val) \ -({ typeof(*(ptr)) __old, __val = *(ptr); \ - for (;;) { \ - __old = cmpxchg((ptr), __val, __val | (val)); \ - if (__old == __val) \ - break; \ - __val = __old; \ - } \ - __old; \ -}) - #if defined(CONFIG_SMP) && defined(TIF_POLLING_NRFLAG) /* * Atomically set TIF_NEED_RESCHED and test for TIF_POLLING_NRFLAG, |