4.9-stable review patch. If anyone has any objections, please let me know.
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commit 3bea9adc96842b8a7345c7fb202c16ae9c8d5b25 upstream.
The native clear_pending() function is identical to the PV version, so the latter can simply be removed.
This fixes the build for systems with >= 16K CPUs using the PV lock implementation.
Reported-by: Waiman Long longman@redhat.com Signed-off-by: Will Deacon will.deacon@arm.com Cc: Linus Torvalds torvalds@linux-foundation.org Cc: Peter Zijlstra peterz@infradead.org Cc: Thomas Gleixner tglx@linutronix.de Cc: boqun.feng@gmail.com Cc: linux-arm-kernel@lists.infradead.org Cc: paulmck@linux.vnet.ibm.com Link: http://lkml.kernel.org/r/20180427101619.GB21705@arm.com Signed-off-by: Ingo Molnar mingo@kernel.org Signed-off-by: Sebastian Andrzej Siewior bigeasy@linutronix.de Signed-off-by: Sasha Levin sashal@kernel.org --- kernel/locking/qspinlock_paravirt.h | 5 ----- 1 file changed, 5 deletions(-)
diff --git a/kernel/locking/qspinlock_paravirt.h b/kernel/locking/qspinlock_paravirt.h index 9c07c72fb10e..af2a24d484aa 100644 --- a/kernel/locking/qspinlock_paravirt.h +++ b/kernel/locking/qspinlock_paravirt.h @@ -105,11 +105,6 @@ static __always_inline void set_pending(struct qspinlock *lock) atomic_or(_Q_PENDING_VAL, &lock->val); }
-static __always_inline void clear_pending(struct qspinlock *lock) -{ - atomic_andnot(_Q_PENDING_VAL, &lock->val); -} - static __always_inline int trylock_clear_pending(struct qspinlock *lock) { int val = atomic_read(&lock->val);