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| author | Will Deacon <will.deacon@arm.com> | 2014-05-02 18:06:19 +0200 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2014-05-30 02:12:25 +0200 |
| commit | 8a87411b649c6082aebea613e84dcb3f174f72fb (patch) | |
| tree | 28495f7a7994a61dca067b9d7fa1e8f2eb6e314c /arch/arm/Kconfig | |
| parent | ARM: 8054/1: perf: add support for the Cortex-A17 PMU (diff) | |
| download | linux-8a87411b649c6082aebea613e84dcb3f174f72fb.tar.xz linux-8a87411b649c6082aebea613e84dcb3f174f72fb.zip | |
ARM: 8047/1: rwsem: use asm-generic rwsem implementation
asm-generic offers an atomic-add based rwsem implementation, which
can avoid the need for heavier, spinlock-based synchronisation on the
fast path.
This patch makes use of the optimised implementation for ARM CPUs.
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/Kconfig')
| -rw-r--r-- | arch/arm/Kconfig | 5 |
1 files changed, 1 insertions, 4 deletions
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig index 58506175a3ea..ce64b7f66328 100644 --- a/arch/arm/Kconfig +++ b/arch/arm/Kconfig @@ -165,12 +165,9 @@ config TRACE_IRQFLAGS_SUPPORT bool default y -config RWSEM_GENERIC_SPINLOCK - bool - default y - config RWSEM_XCHGADD_ALGORITHM bool + default y config ARCH_HAS_ILOG2_U32 bool |