diff options
| author | Will Deacon <will.deacon@arm.com> | 2014-01-21 15:36:10 -0800 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2014-01-28 13:13:28 +0100 |
| commit | e207552e64ea053a33e856828ad7915484911d06 (patch) | |
| tree | cf3fcc21ce54d15edc8bf13373c786ed6511ee41 /arch/sh/kernel/cpu/sh4a/clock-sh7763.c | |
| parent | 5faeb8adb956a5ad6579c4e309e8689943ad8294 (diff) | |
locking/mcs: Allow architectures to hook in to contended paths
When contended, architectures may be able to reduce the polling overhead
in ways which aren't expressible using a simple relax() primitive.
This patch allows architectures to hook into the mcs_{lock,unlock}
functions for the contended cases only.
Reviewed-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Tim Chen <tim.c.chen@linux.intel.com>
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Link: http://lkml.kernel.org/r/1390347370.3138.65.camel@schen9-DESK
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'arch/sh/kernel/cpu/sh4a/clock-sh7763.c')
0 files changed, 0 insertions, 0 deletions