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authorChristian Borntraeger <borntraeger@de.ibm.com>2016-10-25 11:03:14 +0200
committerIngo Molnar <mingo@kernel.org>2016-11-16 10:15:10 +0100
commitf2f09a4cee3507dba0e24b87ba2961a5c377d3a7 (patch)
tree43a4dc4e093c4cb3efb9140ad6f76822a7055c33 /kernel/locking/mutex.c
parent22b6430d36659b37ed139b7fd87fcc7237fb0cfd (diff)
downloadlinux-f2f09a4cee3507dba0e24b87ba2961a5c377d3a7.tar.bz2
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 <borntraeger@de.ibm.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Nicholas Piggin <npiggin@gmail.com> Cc: Noam Camus <noamc@ezchip.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Russell King <linux@armlinux.org.uk> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Will Deacon <will.deacon@arm.com> 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 <mingo@kernel.org>
Diffstat (limited to 'kernel/locking/mutex.c')
-rw-r--r--kernel/locking/mutex.c4
1 files changed, 2 insertions, 2 deletions
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)