From f2f09a4cee3507dba0e24b87ba2961a5c377d3a7 Mon Sep 17 00:00:00 2001 From: Christian Borntraeger Date: Tue, 25 Oct 2016 11:03:14 +0200 Subject: locking/core: Remove cpu_relax_lowlatency() users With the s390 special case of a yielding cpu_relax() implementation gone, we can now remove all users of cpu_relax_lowlatency() and replace them with cpu_relax(). Signed-off-by: Christian Borntraeger Signed-off-by: Peter Zijlstra (Intel) Cc: Catalin Marinas Cc: Heiko Carstens Cc: Linus Torvalds Cc: Martin Schwidefsky Cc: Nicholas Piggin Cc: Noam Camus Cc: Peter Zijlstra Cc: Russell King Cc: Thomas Gleixner Cc: Will Deacon Cc: linuxppc-dev@lists.ozlabs.org Cc: virtualization@lists.linux-foundation.org Cc: xen-devel@lists.xenproject.org Link: http://lkml.kernel.org/r/1477386195-32736-5-git-send-email-borntraeger@de.ibm.com Signed-off-by: Ingo Molnar --- kernel/locking/mutex.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'kernel/locking/mutex.c') diff --git a/kernel/locking/mutex.c b/kernel/locking/mutex.c index 17a88e929e6a..a65e09a046ac 100644 --- a/kernel/locking/mutex.c +++ b/kernel/locking/mutex.c @@ -369,7 +369,7 @@ bool mutex_spin_on_owner(struct mutex *lock, struct task_struct *owner) break; } - cpu_relax_lowlatency(); + cpu_relax(); } rcu_read_unlock(); @@ -492,7 +492,7 @@ static bool mutex_optimistic_spin(struct mutex *lock, * memory barriers as we'll eventually observe the right * values at the cost of a few extra spins. */ - cpu_relax_lowlatency(); + cpu_relax(); } if (!waiter) -- cgit v1.2.3