| Date | Tue, 17 Aug 2021 20:14:21 -0000 | From | "tip-bot2 for Sebastian Andrzej Siewior" <> | Subject | [tip: locking/core] locking/rtmutex: Reduce <linux/rtmutex.h> header dependencies, only include <linux/rbtree_types.h> |
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The following commit has been merged into the locking/core branch of tip:
Commit-ID: e4e17af3b7f8841279b5a429de14907e26845c39 Gitweb: https://git.kernel.org/tip/e4e17af3b7f8841279b5a429de14907e26845c39 Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de> AuthorDate: Sun, 15 Aug 2021 23:28:20 +02:00 Committer: Ingo Molnar <mingo@kernel.org> CommitterDate: Tue, 17 Aug 2021 17:37:26 +02:00
locking/rtmutex: Reduce <linux/rtmutex.h> header dependencies, only include <linux/rbtree_types.h>
We have the following header dependency problem on RT:
- <linux/rtmutex.h> needs the definition of 'struct rb_root_cached'. - <linux/rbtree.h> includes <linux/kernel.h>, which includes <linux/spinlock.h>
That works nicely for non-RT enabled kernels, but on RT enabled kernels spinlocks are based on rtmutexes, which creates another circular header dependency as <linux/spinlocks.h> will require <linux/rtmutex.h>.
Include <linux/rbtree_types.h> instead.
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Signed-off-by: Ingo Molnar <mingo@kernel.org> Link: https://lore.kernel.org/r/20210815211303.598003167@linutronix.de --- include/linux/rtmutex.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/include/linux/rtmutex.h b/include/linux/rtmutex.h index 4be97ae..9deedfe 100644 --- a/include/linux/rtmutex.h +++ b/include/linux/rtmutex.h @@ -15,7 +15,7 @@ #include <linux/compiler.h> #include <linux/linkage.h> -#include <linux/rbtree.h> +#include <linux/rbtree_types.h> #include <linux/spinlock_types_raw.h> extern int max_lock_depth; /* for sysctl */
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