summaryrefslogtreecommitdiff
path: root/include
diff options
context:
space:
mode:
authorThomas Gleixner <tglx@linutronix.de>2011-05-31 16:59:16 +0200
committerClark Williams <williams@redhat.com>2012-02-15 10:32:46 -0600
commite32c36191e6ca88b9cb08fde4ac3414ffeae17ac (patch)
tree7f979270306b8feaa42d70f0a4e1c35550d4fa67 /include
parent8eacaeb3f8bd53a8fa9be31ce270e1a97acf6984 (diff)
sched-delay-put-task.patch
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'include')
-rw-r--r--include/linux/sched.h13
1 files changed, 13 insertions, 0 deletions
diff --git a/include/linux/sched.h b/include/linux/sched.h
index 9ff731db2fba..fb5e51fc5af6 100644
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -1591,6 +1591,9 @@ struct task_struct {
#ifdef CONFIG_HAVE_HW_BREAKPOINT
atomic_t ptrace_bp_refcnt;
#endif
+#ifdef CONFIG_PREEMPT_RT_BASE
+ struct rcu_head put_rcu;
+#endif
};
/* Future-safe accessor for struct task_struct's cpus_allowed. */
@@ -1775,6 +1778,15 @@ extern struct pid *cad_pid;
extern void free_task(struct task_struct *tsk);
#define get_task_struct(tsk) do { atomic_inc(&(tsk)->usage); } while(0)
+#ifdef CONFIG_PREEMPT_RT_BASE
+extern void __put_task_struct_cb(struct rcu_head *rhp);
+
+static inline void put_task_struct(struct task_struct *t)
+{
+ if (atomic_dec_and_test(&t->usage))
+ call_rcu(&t->put_rcu, __put_task_struct_cb);
+}
+#else
extern void __put_task_struct(struct task_struct *t);
static inline void put_task_struct(struct task_struct *t)
@@ -1782,6 +1794,7 @@ static inline void put_task_struct(struct task_struct *t)
if (atomic_dec_and_test(&t->usage))
__put_task_struct(t);
}
+#endif
extern void task_times(struct task_struct *p, cputime_t *ut, cputime_t *st);
extern void thread_group_times(struct task_struct *p, cputime_t *ut, cputime_t *st);