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| author | Peter Zijlstra <peterz@infradead.org> | 2019-08-08 08:47:14 +0200 |
|---|---|---|
| committer | Peter Zijlstra <peterz@infradead.org> | 2019-08-08 09:09:25 +0200 |
| commit | e57d143091f1c0b1a98140a4d2e63e113afb62c0 (patch) | |
| tree | 1100b05a0b77cb5f9b91baa2b412b6940076b106 /include/linux/mutex.h | |
| parent | a037d269221c0ae15f47046757afcbd1a7177bbf (diff) | |
| download | lwn-e57d143091f1c0b1a98140a4d2e63e113afb62c0.tar.gz lwn-e57d143091f1c0b1a98140a4d2e63e113afb62c0.zip | |
mutex: Fix up mutex_waiter usage
The patch moving bits into mutex.c was a little too much; by also
moving struct mutex_waiter a few less common CONFIGs would no longer
build.
Fixes: 5f35d5a66b3e ("locking/mutex: Make __mutex_owner static to mutex.c")
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Diffstat (limited to 'include/linux/mutex.h')
| -rw-r--r-- | include/linux/mutex.h | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/include/linux/mutex.h b/include/linux/mutex.h index eb8c62aba263..aca8f36dfac9 100644 --- a/include/linux/mutex.h +++ b/include/linux/mutex.h @@ -65,6 +65,19 @@ struct mutex { #endif }; +/* + * This is the control structure for tasks blocked on mutex, + * which resides on the blocked task's kernel stack: + */ +struct mutex_waiter { + struct list_head list; + struct task_struct *task; + struct ww_acquire_ctx *ww_ctx; +#ifdef CONFIG_DEBUG_MUTEXES + void *magic; +#endif +}; + #ifdef CONFIG_DEBUG_MUTEXES #define __DEBUG_MUTEX_INITIALIZER(lockname) \ |