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authorArun R Bharadwaj <arun@linux.vnet.ibm.com>2008-12-01 20:49:05 +0530
committerIngo Molnar <mingo@elte.hu>2008-12-01 20:39:50 +0100
commit6c415b9234a8c71f290e5d4fddc467f103f32719 (patch)
treed7ba28aab68b5b38952ccc6256b7ecb701b23ed5
parent70574a996fc7a70c5586eb56bd92a544eccf18b6 (diff)
sched: add uid information to sched_debug for CONFIG_USER_SCHED
Impact: extend information in /proc/sched_debug This patch adds uid information in sched_debug for CONFIG_USER_SCHED Signed-off-by: Arun R Bharadwaj <arun@linux.vnet.ibm.com> Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Signed-off-by: Ingo Molnar <mingo@elte.hu>
-rw-r--r--include/linux/sched.h1
-rw-r--r--kernel/sched.c10
-rw-r--r--kernel/sched_debug.c6
-rw-r--r--kernel/user.c2
4 files changed, 18 insertions, 1 deletions
diff --git a/include/linux/sched.h b/include/linux/sched.h
index 7a69c4d224ee..d8733f07d80b 100644
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -2218,6 +2218,7 @@ extern void normalize_rt_tasks(void);
extern struct task_group init_task_group;
#ifdef CONFIG_USER_SCHED
extern struct task_group root_task_group;
+extern void set_tg_uid(struct user_struct *user);
#endif
extern struct task_group *sched_create_group(struct task_group *parent);
diff --git a/kernel/sched.c b/kernel/sched.c
index 6a99703e0eb0..4c7388ef5be7 100644
--- a/kernel/sched.c
+++ b/kernel/sched.c
@@ -261,6 +261,10 @@ struct task_group {
struct cgroup_subsys_state css;
#endif
+#ifdef CONFIG_USER_SCHED
+ uid_t uid;
+#endif
+
#ifdef CONFIG_FAIR_GROUP_SCHED
/* schedulable entities of this group on each cpu */
struct sched_entity **se;
@@ -286,6 +290,12 @@ struct task_group {
#ifdef CONFIG_USER_SCHED
+/* Helper function to pass uid information to create_sched_user() */
+void set_tg_uid(struct user_struct *user)
+{
+ user->tg->uid = user->uid;
+}
+
/*
* Root task group.
* Every UID task group (including init_task_group aka UID-0) will
diff --git a/kernel/sched_debug.c b/kernel/sched_debug.c
index baf2f17af462..4293cfa9681d 100644
--- a/kernel/sched_debug.c
+++ b/kernel/sched_debug.c
@@ -160,10 +160,14 @@ void print_cfs_rq(struct seq_file *m, int cpu, struct cfs_rq *cfs_rq)
cgroup_path(tg->css.cgroup, path, sizeof(path));
SEQ_printf(m, "\ncfs_rq[%d]:%s\n", cpu, path);
+#elif defined(CONFIG_USER_SCHED) && defined(CONFIG_FAIR_GROUP_SCHED)
+ {
+ uid_t uid = cfs_rq->tg->uid;
+ SEQ_printf(m, "\ncfs_rq[%d] for UID: %u\n", cpu, uid);
+ }
#else
SEQ_printf(m, "\ncfs_rq[%d]:\n", cpu);
#endif
-
SEQ_printf(m, " .%-30s: %Ld.%06ld\n", "exec_clock",
SPLIT_NS(cfs_rq->exec_clock));
diff --git a/kernel/user.c b/kernel/user.c
index 39d6159fae43..cec2224bc9f5 100644
--- a/kernel/user.c
+++ b/kernel/user.c
@@ -101,6 +101,8 @@ static int sched_create_user(struct user_struct *up)
if (IS_ERR(up->tg))
rc = -ENOMEM;
+ set_tg_uid(up);
+
return rc;
}