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From:   Li Hua <hucool.lihua@huawei.com>
To:     <frederic@kernel.org>
CC:     <bristot@redhat.com>, <bsegall@google.com>,
        <dietmar.eggemann@arm.com>, <hucool.lihua@huawei.com>,
        <juri.lelli@redhat.com>, <linux-kernel@vger.kernel.org>,
        <mgorman@suse.de>, <mingo@redhat.com>, <peterz@infradead.org>,
        <rostedt@goodmis.org>, <vincent.guittot@linaro.org>
Subject: Re: [Question] Reading /proc/stat has a time backward issue
Date:   Sun, 14 Aug 2022 02:58:38 +0800
Message-ID: <20220813185838.49743-1-hucool.lihua@huawei.com>
In-Reply-To: <20220811124958.GB3284884@lothringen>
References: <20220811124958.GB3284884@lothringen>
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Sorry for not seeing your reply in time

Your patch doesn't seem to fix the problem.  The root cause of the problem is that
the "vtime->utime" and "delta" are temporarily added to the stack and show to the user.

I tried to submit a patch to avoid presenting time backwards to the user. as bellow:
https://lkml.org/lkml/2022/8/12/261

Hope you have better suggestions, thank you for your reply.