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authorChris Metcalf <cmetcalf@tilera.com>2013-02-01 12:37:48 -0500
committerChris Metcalf <cmetcalf@tilera.com>2013-03-22 15:47:00 -0400
commitadf6d9b30f089c52e674e84ca2960581e504e5e3 (patch)
treef680f2877480201116e54da1e6a1af848884d646 /arch/tile/Kconfig
parentef567f25d5d9d803b89bc2aec6bb71fe8b4bebd9 (diff)
downloadlinux-adf6d9b30f089c52e674e84ca2960581e504e5e3.tar.bz2
tile: support atomic64_dec_if_positive()
Use the normal cmpxchg() idiom to implement this functionality. Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>
Diffstat (limited to 'arch/tile/Kconfig')
-rw-r--r--arch/tile/Kconfig1
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/tile/Kconfig b/arch/tile/Kconfig
index 0e500d90c2a0..9a9d08637ab9 100644
--- a/arch/tile/Kconfig
+++ b/arch/tile/Kconfig
@@ -24,6 +24,7 @@ config TILE
select MODULES_USE_ELF_RELA
select HAVE_ARCH_TRACEHOOK
select HAVE_SYSCALL_TRACEPOINTS
+ select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
# FIXME: investigate whether we need/want these options.
# select HAVE_IOREMAP_PROT