Files
linux/arch/mips/include/asm
Leonid Yegoshin 6f6ed48265 MIPS: Replace smp_mb with release barrier function in unlocks.
Repleace smp_mb() in arch_write_unlock() and __clear_bit_unlock() to
smp_mb__before_llsc() call which does "release" barrier functionality.

It seems like it was missed in commit f252ffd50c
during introduction of "acquire" and "release" semantics.

[ralf@linux-mips: The original patch submission was labelled a fix but
actually it replaces a barrier with another less restrictive type of
barrier so it doesn't fix any ill behaviour but rather squeezes out a
tad better performance.  Further improvments will be possible once
smp_release() has been merged.]

Signed-off-by: Leonid Yegoshin <Leonid.Yegoshin@imgtec.com>
Cc: linux-mips@linux-mips.org
Cc: benh@kernel.crashing.org
Cc: will.deacon@arm.com
Cc: linux-kernel@vger.kernel.org
Cc: markos.chandras@imgtec.com
Cc: macro@linux-mips.org
Cc: Steven.Hill@imgtec.com
Cc: alexander.h.duyck@redhat.com
Cc: davem@davemloft.net
Patchwork: https://patchwork.linux-mips.org/patch/10507/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2015-06-21 21:54:30 +02:00
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