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SubjectRe: [PATCH] cgroup: make /proc/cgroups aligned
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On 2016/1/4 0:08, Geliang Tang wrote:
> 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@163.com>

This change is not acceptable because it may break userspace.

> ---
> 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));
>



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