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| author | Nicolas Pitre <nicolas.pitre@linaro.org> | 2017-08-01 00:31:32 -0400 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2017-08-01 14:36:35 +0200 |
| commit | bc2eecd7ecce40af43b6eb3d256b6076257df846 (patch) | |
| tree | d4189369c4484b144f9cb3d72455ac3a5207dd37 /init | |
| parent | f06e8c584fa0d05312c11ea66194f3d2efb93c21 (diff) | |
| download | lwn-bc2eecd7ecce40af43b6eb3d256b6076257df846.tar.gz lwn-bc2eecd7ecce40af43b6eb3d256b6076257df846.zip | |
futex: Allow for compiling out PI support
This makes it possible to preserve basic futex support and compile out the
PI support when RT mutexes are not available.
Signed-off-by: Nicolas Pitre <nico@linaro.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Darren Hart <dvhart@infradead.org>
Link: http://lkml.kernel.org/r/alpine.LFD.2.20.1708010024190.5981@knanqh.ubzr
Diffstat (limited to 'init')
| -rw-r--r-- | init/Kconfig | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/init/Kconfig b/init/Kconfig index 8514b25db21c..5f0ef850e808 100644 --- a/init/Kconfig +++ b/init/Kconfig @@ -1275,12 +1275,17 @@ config BASE_FULL config FUTEX bool "Enable futex support" if EXPERT default y - select RT_MUTEXES + imply RT_MUTEXES help Disabling this option will cause the kernel to be built without support for "fast userspace mutexes". The resulting kernel may not run glibc-based applications correctly. +config FUTEX_PI + bool + depends on FUTEX && RT_MUTEXES + default y + config HAVE_FUTEX_CMPXCHG bool depends on FUTEX |