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authorMax Filippov <jcmvbkbc@gmail.com>2015-09-30 15:17:35 +0300
committerMax Filippov <jcmvbkbc@gmail.com>2015-11-02 18:03:07 +0300
commitd951ba21b95938c24a28a25295c44719d3b51ee2 (patch)
treecc02a0697c62ff3dc2b30aa143e11690734b3038 /arch/xtensa
parentd9eb3cb24837f4fb6391b0172f17156377adabba (diff)
downloadlinux-d951ba21b95938c24a28a25295c44719d3b51ee2.tar.xz
xtensa: nommu: select HAVE_FUTEX_CMPXCHG
Not having HAVE_FUTEX_CMPXCHG makes futex_detect_cmpxchg probe cmpxchg_futex_value_locked with NULL address. It's not guaranteed to fault without MMU, instead it locks up on Xtensa when there's no RAM at address 0. Select HAVE_FUTEX_CMPXCHG in noMMU Xtensa configurations. Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Diffstat (limited to 'arch/xtensa')
-rw-r--r--arch/xtensa/Kconfig1
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/xtensa/Kconfig b/arch/xtensa/Kconfig
index 366a98139909..3d35867c61f1 100644
--- a/arch/xtensa/Kconfig
+++ b/arch/xtensa/Kconfig
@@ -17,6 +17,7 @@ config XTENSA
select HAVE_DMA_API_DEBUG
select HAVE_DMA_ATTRS
select HAVE_FUNCTION_TRACER
+ select HAVE_FUTEX_CMPXCHG if !MMU
select HAVE_IRQ_TIME_ACCOUNTING
select HAVE_OPROFILE
select HAVE_PERF_EVENTS