From 95e02ca9bb5324360e7dea1ea1c563036d84a5e6 Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Tue, 27 Jun 2006 02:55:02 -0700 Subject: [PATCH] rtmutex: Propagate priority settings into PI lock chains When the priority of a task, which is blocked on a lock, changes we must propagate this change into the PI lock chain. Therefor the chain walk code is changed to get rid of the references to current to avoid false positives in the deadlock detector, as setscheduler might be called by a task which holds the lock on which the task whose priority is changed is blocked. Also add some comments about the get/put_task_struct usage to avoid confusion. Signed-off-by: Thomas Gleixner Signed-off-by: Ingo Molnar Cc: Steven Rostedt Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/sched.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/sched.h b/include/linux/sched.h index b4e6be7de5a..821f0481ebe 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -1044,11 +1044,13 @@ extern void sched_idle_next(void); #ifdef CONFIG_RT_MUTEXES extern int rt_mutex_getprio(task_t *p); extern void rt_mutex_setprio(task_t *p, int prio); +extern void rt_mutex_adjust_pi(task_t *p); #else static inline int rt_mutex_getprio(task_t *p) { return p->normal_prio; } +# define rt_mutex_adjust_pi(p) do { } while (0) #endif extern void set_user_nice(task_t *p, long nice); -- cgit v1.2.3