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Commit 6c415b92 authored by Arun R Bharadwaj's avatar Arun R Bharadwaj Committed by Ingo Molnar
Browse files

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: default avatarArun R Bharadwaj <arun@linux.vnet.ibm.com>
Acked-by: default avatarPeter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
parent 70574a99

include/linux/sched.h

+1 −0
Original line number Diff line number Diff line
@@ -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);

kernel/sched.c

+10 −0
Original line number Diff line number Diff line
@@ -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

kernel/sched_debug.c

+5 −1
Original line number Diff line number Diff line
@@ -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));

kernel/user.c

+2 −0
Original line number Diff line number Diff line
@@ -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;

}