From bc2eecd7ecce40af43b6eb3d256b6076257df846 Mon Sep 17 00:00:00 2001 From: Nicolas Pitre Date: Tue, 1 Aug 2017 00:31:32 -0400 Subject: 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 Signed-off-by: Thomas Gleixner Cc: Peter Zijlstra Cc: Darren Hart Link: http://lkml.kernel.org/r/alpine.LFD.2.20.1708010024190.5981@knanqh.ubzr --- init/Kconfig | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) (limited to 'init') 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 -- cgit v1.2.3-59-g8ed1b