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MIPS: Add nudges to writes for bit unlocks. 

Flushing the writes lets other CPUs waiting for the lock to get it sooner.

Signed-off-by: Chad Reese <kreese@caviumnetworks.com>
Signed-off-by: David Daney <david.daney@cavium.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/17289/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
hifive-unleashed-5.1
Chad Reese 2017-09-15 12:31:28 -05:00 committed by Ralf Baechle
parent 508c5757a7
commit 34ae9c915f
1 changed files with 1 additions and 0 deletions
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arch/mips/include/asm/bitops.h
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@ -456,6 +456,7 @@ static inline void __clear_bit_unlock(unsigned long nr, volatile unsigned long *
{
smp_mb__before_llsc();
__clear_bit(nr, addr);
nudge_writes();
}
/*