From e57d143091f1c0b1a98140a4d2e63e113afb62c0 Mon Sep 17 00:00:00 2001 From: Peter Zijlstra Date: Thu, 8 Aug 2019 08:47:14 +0200 Subject: 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) --- include/linux/mutex.h | 13 +++++++++++++ 1 file changed, 13 insertions(+) (limited to 'include/linux/mutex.h') 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) \ -- cgit