Received-SPF: pass (google.com: domain of linux-kernel+bounces-126114-linux.lists.archive=gmail.com@vger.kernel.org designates 2604:1380:45e3:2400::1 as permitted sender) client-ip=2604:1380:45e3:2400::1;
From: Vitalii Bursov <vitaly@bursov.com>
To: Ingo Molnar <mingo@redhat.com>,
	Peter Zijlstra <peterz@infradead.org>,
	Juri Lelli <juri.lelli@redhat.com>,
	Vincent Guittot <vincent.guittot@linaro.org>,
	Dietmar Eggemann <dietmar.eggemann@arm.com>,
	Steven Rostedt <rostedt@goodmis.org>,
	Ben Segall <bsegall@google.com>,
	Mel Gorman <mgorman@suse.de>,
	Daniel Bristot de Oliveira <bristot@redhat.com>,
	Valentin Schneider <vschneid@redhat.com>,
	linux-kernel@vger.kernel.org,
	Vitalii Bursov <vitaly@bursov.com>
Subject: [PATCH v2 2/3] sched/debug: dump domains' level
Date: Sun, 31 Mar 2024 19:01:48 +0300
Message-Id: <da9480a19fcc53e173b1ae83411aac2a730e3465.1711900396.git.vitaly@bursov.com>
In-Reply-To: <cover.1711900396.git.vitaly@bursov.com>
References: <cover.1711900396.git.vitaly@bursov.com>
Precedence: bulk
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit

Knowing domain's level exactly can be useful when setting
relax_domain_level or cpuset.sched_relax_domain_level

Usage:
cat /debug/sched/domains/cpu0/domain1/level
to dump cpu0 domain1's level.

Signed-off-by: Vitalii Bursov <vitaly@bursov.com>
---
 kernel/sched/debug.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/kernel/sched/debug.c b/kernel/sched/debug.c
index 8d5d98a58..c1eb9a1af 100644
--- a/kernel/sched/debug.c
+++ b/kernel/sched/debug.c
@@ -425,6 +425,7 @@ static void register_sd(struct sched_domain *sd, struct dentry *parent)
 
 	debugfs_create_file("flags", 0444, parent, &sd->flags, &sd_flags_fops);
 	debugfs_create_file("groups_flags", 0444, parent, &sd->groups->flags, &sd_flags_fops);
+	debugfs_create_u32("level", 0444, parent, (u32 *)&sd->level);
 }
 
 void update_sched_domain_debugfs(void)
-- 
2.20.1