linux-kernel - Re: [PATCH 3/3] sched/fair: add tracepoints for cfs throttle

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Date:   Tue, 22 May 2018 17:34:57 -0700
From:   Cong Wang <xiyou.wangcong@...il.com>
To:     Ivan Babrou <ibobrik@...il.com>
Cc:     LKML <linux-kernel@...r.kernel.org>, Paul Turner <pjt@...gle.com>,
        Peter Zijlstra <peterz@...radead.org>,
        Mike Galbraith <efault@....de>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...nel.org>
Subject: Re: [PATCH 3/3] sched/fair: add tracepoints for cfs throttle

On Mon, May 21, 2018 at 11:35 PM, Ivan Babrou <ibobrik@...il.com> wrote:
>
>
> On Mon, May 21, 2018 at 11:20 PM Cong Wang <xiyou.wangcong@...il.com> wrote:
>>
>> +
>> +       TP_printk("path=%s cpu=%d runtime_remaining=%lld",
>> __get_str(cfs_path),
>> +                 __entry->cpu, __entry->runtime_remaining)
>
>
> Can you add "[ns]" as the unit to runtime_remaining? We have it in
> "sched:sched_stat_runtime".

Hmm, although it is indeed ns, this ->runtime_remaining can be negative,
unlike sched_stat_runtime. So I am not sure if I should marked it as "[ns]".