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authorThadeu Lima de Souza Cascardo <cascardo@holoscopio.com>2011-09-14 16:21:08 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2011-09-14 18:09:37 -0700
commite5f0bdc7840bdb791247cb98dfc1dab6ea6c7da4 (patch)
treee818977d221bdb93b8bb6098310f25e99877736a /arch/um
parent0d6617c7732c083659566117ca620eda6f1a87af (diff)
downloadop-kernel-dev-e5f0bdc7840bdb791247cb98dfc1dab6ea6c7da4.zip
op-kernel-dev-e5f0bdc7840bdb791247cb98dfc1dab6ea6c7da4.tar.gz
um: disable CMPXCHG_DOUBLE as it breaks UML build
Commit b789ef518b2 ("slub: Add cmpxchg_double_slab()") tests for cmpxchg_double support in the SLUB code and it breaks UML builds with SLUB. Since UML does not support checking for CPU features, disable CMPXCHG_DOUBLE just like CMPXCHG_LOCAL is disabled for UML. Signed-off-by: Thadeu Lima de Souza Cascardo <cascardo@holoscopio.com> Reviewed-by: Christoph Lameter <cl@linux.com> Cc: Jeff Dike <jdike@addtoit.com> Cc: Richard Weinberger <richard@nod.at> Signed-off-by: Richard Weinberger <richard@nod.at> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch/um')
-rw-r--r--arch/um/Kconfig.x864
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/um/Kconfig.x86 b/arch/um/Kconfig.x86
index d31ecf3..21bebe6 100644
--- a/arch/um/Kconfig.x86
+++ b/arch/um/Kconfig.x86
@@ -10,6 +10,10 @@ config CMPXCHG_LOCAL
bool
default n
+config CMPXCHG_DOUBLE
+ bool
+ default n
+
source "arch/x86/Kconfig.cpu"
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