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authorThomas Gleixner <tglx@linutronix.de>2006-06-27 02:55:02 -0700
committerLinus Torvalds <torvalds@g5.osdl.org>2006-06-27 17:32:48 -0700
commit95e02ca9bb5324360e7dea1ea1c563036d84a5e6 (patch)
tree0336dd808abe113b42f53a8f700d50ea6ba674ff /include/linux
parent0bafd214e4ba55dc1fb81a3031d0249292f1bc05 (diff)
[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 <tglx@linutronix.de> Signed-off-by: Ingo Molnar <mingo@elte.hu> Cc: Steven Rostedt <rostedt@goodmis.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'include/linux')
-rw-r--r--include/linux/sched.h2
1 files changed, 2 insertions, 0 deletions
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);