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authorSebastian Andrzej Siewior <bigeasy@linutronix.de>2022-02-08 18:21:10 +0100
committerPeter Zijlstra <peterz@infradead.org>2022-02-11 12:13:56 +0100
commit1c6f9ec0095459b5120a1cb059d442f56d3cb6e7 (patch)
tree2f0c8f9ac2a897ae8c86b18ae973ff4562477e4f /init
parentlocking/local_lock: Make the empty local_lock_*() function a macro. (diff)
downloadlinux-1c6f9ec0095459b5120a1cb059d442f56d3cb6e7.tar.xz
linux-1c6f9ec0095459b5120a1cb059d442f56d3cb6e7.zip
locking: Enable RT_MUTEXES by default on PREEMPT_RT.
The CONFIG_RT_MUTEXES option is enabled by CONFIG_FUTEX and CONFIG_I2C. If both are disabled then a CONFIG_PREEMPT_RT build fails to compile. It is not possible to have a PREEMPT_RT kernel without RT_MUTEX support because RT_MUTEX based locking is always used. Enable CONFIG_RT_MUTEXES by default on PREEMPT_RT builds. Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Link: https://lkml.kernel.org/r/YgKmhjkcuqWXdUjQ@linutronix.de
Diffstat (limited to 'init')
-rw-r--r--init/Kconfig1
1 files changed, 1 insertions, 0 deletions
diff --git a/init/Kconfig b/init/Kconfig
index e9119bf54b1f..beb5b866c318 100644
--- a/init/Kconfig
+++ b/init/Kconfig
@@ -2054,6 +2054,7 @@ source "arch/Kconfig"
config RT_MUTEXES
bool
+ default y if PREEMPT_RT
config BASE_SMALL
int