aboutsummaryrefslogtreecommitdiffstats
path: root/include/linux/pid.h
diff options
context:
space:
mode:
Diffstat (limited to 'include/linux/pid.h')
-rw-r--r--include/linux/pid.h8
1 files changed, 3 insertions, 5 deletions
diff --git a/include/linux/pid.h b/include/linux/pid.h
index c21c7e8124a7..22921ac4cfd9 100644
--- a/include/linux/pid.h
+++ b/include/linux/pid.h
@@ -48,7 +48,7 @@ enum pid_type
48 */ 48 */
49 49
50struct upid { 50struct upid {
51 /* Try to keep pid_chain in the same cacheline as nr for find_pid */ 51 /* Try to keep pid_chain in the same cacheline as nr for find_vpid */
52 int nr; 52 int nr;
53 struct pid_namespace *ns; 53 struct pid_namespace *ns;
54 struct hlist_node pid_chain; 54 struct hlist_node pid_chain;
@@ -57,10 +57,10 @@ struct upid {
57struct pid 57struct pid
58{ 58{
59 atomic_t count; 59 atomic_t count;
60 unsigned int level;
60 /* lists of tasks that use this pid */ 61 /* lists of tasks that use this pid */
61 struct hlist_head tasks[PIDTYPE_MAX]; 62 struct hlist_head tasks[PIDTYPE_MAX];
62 struct rcu_head rcu; 63 struct rcu_head rcu;
63 unsigned int level;
64 struct upid numbers[1]; 64 struct upid numbers[1];
65}; 65};
66 66
@@ -105,14 +105,12 @@ extern struct pid_namespace init_pid_ns;
105 * or rcu_read_lock() held. 105 * or rcu_read_lock() held.
106 * 106 *
107 * find_pid_ns() finds the pid in the namespace specified 107 * find_pid_ns() finds the pid in the namespace specified
108 * find_pid() find the pid by its global id, i.e. in the init namespace
109 * find_vpid() finr the pid by its virtual id, i.e. in the current namespace 108 * find_vpid() finr the pid by its virtual id, i.e. in the current namespace
110 * 109 *
111 * see also find_task_by_pid() set in include/linux/sched.h 110 * see also find_task_by_vpid() set in include/linux/sched.h
112 */ 111 */
113extern struct pid *find_pid_ns(int nr, struct pid_namespace *ns); 112extern struct pid *find_pid_ns(int nr, struct pid_namespace *ns);
114extern struct pid *find_vpid(int nr); 113extern struct pid *find_vpid(int nr);
115extern struct pid *find_pid(int nr);
116 114
117/* 115/*
118 * Lookup a PID in the hash table, and return with it's count elevated. 116 * Lookup a PID in the hash table, and return with it's count elevated.