linux-kernel - [PATCH] cgroup: make /proc/cgroups aligned

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Message-Id: <e814e0db26aa5a3662c1e98dc1410c6b3e9a4c12.1451837184.git.geliangtang@163.com>
Date:	Mon,  4 Jan 2016 00:08:23 +0800
From:	Geliang Tang <geliangtang@....com>
To:	Tejun Heo <tj@...nel.org>, Li Zefan <lizefan@...wei.com>,
	Johannes Weiner <hannes@...xchg.org>
Cc:	Geliang Tang <geliangtang@....com>, cgroups@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH] cgroup: make /proc/cgroups aligned

This patch makes /proc/cgroups aligned like this:
$ cat /proc/cgroups
#subsys_name    hierarchy       num_cgroups     enabled
      cpuset           11                 1           1
         cpu            2                 1           1
     cpuacct            2                 1           1
       blkio           12                 1           1
      memory            3                 1           1
     devices            4                83           1
     freezer           10                 1           1
  perf_event            9                 1           1
     hugetlb            7                 1           1
   intel_rdt            6                 1           1
        pids            8                 1           1
       debug            5                 1           1

Signed-off-by: Geliang Tang <geliangtang@....com>
---
 kernel/cgroup.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kernel/cgroup.c b/kernel/cgroup.c
index f1603c1..063b28f 100644
--- a/kernel/cgroup.c
+++ b/kernel/cgroup.c
@@ -5411,7 +5411,7 @@ static int proc_cgroupstats_show(struct seq_file *m, void *v)
 	mutex_lock(&cgroup_mutex);
 
 	for_each_subsys(ss, i)
-		seq_printf(m, "%s\t%d\t%d\t%d\n",
+		seq_printf(m, "%12s\t%9d\t%11d\t%7d\n",
 			   ss->legacy_name, ss->root->hierarchy_id,
 			   atomic_read(&ss->root->nr_cgrps),
 			   cgroup_ssid_enabled(i));
-- 
2.5.0


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