linux-kernel - Re: [PATCH] misc_cgroup: use a counter to count the number of failures

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Date:   Fri, 13 Aug 2021 06:16:45 -1000
From:   Tejun Heo <tj@...nel.org>
To:     brookxu <brookxu.cn@...il.com>
Cc:     lizefan.x@...edance.com, hannes@...xchg.org,
        linux-kernel@...r.kernel.org, cgroups@...r.kernel.org
Subject: Re: [PATCH] misc_cgroup: use a counter to count the number of
 failures

Hello,

On Fri, Aug 13, 2021 at 01:26:11PM +0800, brookxu wrote:
> From: Chunguang Xu <brookxu@...cent.com>
> 
> For a container, we only print an error log when the resource
> charge fails. There may be some problems here:
> 
> 1. If a large number of containers are created and deleted,
>    there will be a lot of error logs.
> 2. According to an error log, we cannot better understand
>    the actual pressure of resources.
> 
> Therefore, perhaps we should use a failcnt counter to count
> the number of failures, so that we can easily understand the
> actual pressure of resources and avoid too many error log..
> 
> This is a partial patch of the previous serial, which may
> be useful, so I resend it.

I think this approach is fine but can you please

* Cc the original author of the misc cgroup who added the warning
  messages.

* Rename failcnt to nr_fails?

Thanks.

-- 
tejun