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authorThadeu Lima de Souza Cascardo <cascardo@holoscopio.com>2011-09-14 19:21:08 -0400
committerLinus Torvalds <torvalds@linux-foundation.org>2011-09-14 21:09:37 -0400
commite5f0bdc7840bdb791247cb98dfc1dab6ea6c7da4 (patch)
treee818977d221bdb93b8bb6098310f25e99877736a /arch
parent0d6617c7732c083659566117ca620eda6f1a87af (diff)
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')
-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 d31ecf346b4e..21bebe63df66 100644
--- a/arch/um/Kconfig.x86
+++ b/arch/um/Kconfig.x86
@@ -10,6 +10,10 @@ config CMPXCHG_LOCAL
10 bool 10 bool
11 default n 11 default n
12 12
13config CMPXCHG_DOUBLE
14 bool
15 default n
16
13source "arch/x86/Kconfig.cpu" 17source "arch/x86/Kconfig.cpu"
14 18
15endmenu 19endmenu