linux-kernel - [PATCH] cgroup: /proc/cgroups output alignment

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Date:   Mon, 30 Jan 2023 16:58:18 +0800
From:   liuq <liuq131@...natelecom.cn>
To:     tj@...nel.org
Cc:     lizefan.x@...edance.com, hannes@...xchg.org,
        cgroups@...r.kernel.org, linux-kernel@...r.kernel.org,
        liuq <liuq131@...natelecom.cn>
Subject: [PATCH] cgroup: /proc/cgroups output alignment

/proc/cgroups output alignment for easy read

Signed-off-by: liuq <liuq131@...natelecom.cn>
---
 kernel/cgroup/cgroup-v1.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/kernel/cgroup/cgroup-v1.c b/kernel/cgroup/cgroup-v1.c
index 52bb5a74a23b..ff82d61ae76f 100644
--- a/kernel/cgroup/cgroup-v1.c
+++ b/kernel/cgroup/cgroup-v1.c
@@ -670,14 +670,14 @@ int proc_cgroupstats_show(struct seq_file *m, void *v)
 	struct cgroup_subsys *ss;
 	int i;
 
-	seq_puts(m, "#subsys_name\thierarchy\tnum_cgroups\tenabled\n");
+	seq_puts(m, "#subsys_name        hierarchy     num_cgroups   enabled\n");
 	/*
 	 * Grab the subsystems state racily. No need to add avenue to
 	 * cgroup_mutex contention.
 	 */
 
 	for_each_subsys(ss, i)
-		seq_printf(m, "%s\t%d\t%d\t%d\n",
+		seq_printf(m, "%-20s%-14d%-14d%-14d\n",
 			   ss->legacy_name, ss->root->hierarchy_id,
 			   atomic_read(&ss->root->nr_cgrps),
 			   cgroup_ssid_enabled(i));
-- 
2.27.0