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| author | Ingo Molnar <mingo@elte.hu> | 2006-06-27 11:54:53 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-06-28 02:32:47 +0200 |
| commit | 23f78d4a03c53cbd75d87a795378ea540aa08c86 (patch) | |
| tree | 27dfe06337990911380fe8c5949ae9acd8e9568a /kernel/fork.c | |
| parent | [PATCH] pi-futex: scheduler support for pi (diff) | |
| download | linux-23f78d4a03c53cbd75d87a795378ea540aa08c86.tar.xz linux-23f78d4a03c53cbd75d87a795378ea540aa08c86.zip | |
[PATCH] pi-futex: rt mutex core
Core functions for the rt-mutex subsystem.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'kernel/fork.c')
| -rw-r--r-- | kernel/fork.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/kernel/fork.c b/kernel/fork.c index 9b4e54ef0225..b664a081fffa 100644 --- a/kernel/fork.c +++ b/kernel/fork.c @@ -104,6 +104,7 @@ static kmem_cache_t *mm_cachep; void free_task(struct task_struct *tsk) { free_thread_info(tsk->thread_info); + rt_mutex_debug_task_free(tsk); free_task_struct(tsk); } EXPORT_SYMBOL(free_task); @@ -913,6 +914,19 @@ asmlinkage long sys_set_tid_address(int __user *tidptr) return current->pid; } +static inline void rt_mutex_init_task(struct task_struct *p) +{ +#ifdef CONFIG_RT_MUTEXES + spin_lock_init(&p->pi_lock); + plist_head_init(&p->pi_waiters, &p->pi_lock); + p->pi_blocked_on = NULL; +# ifdef CONFIG_DEBUG_RT_MUTEXES + spin_lock_init(&p->held_list_lock); + INIT_LIST_HEAD(&p->held_list_head); +# endif +#endif +} + /* * This creates a new process as a copy of the old one, * but does not actually start it yet. @@ -1034,6 +1048,8 @@ static task_t *copy_process(unsigned long clone_flags, mpol_fix_fork_child_flag(p); #endif + rt_mutex_init_task(p); + #ifdef CONFIG_DEBUG_MUTEXES p->blocked_on = NULL; /* not blocked yet */ #endif |