linux-kernel - Re: [PATCH v6 10/11] drivers: perf: hisi: use poll method when no IRQ for MN counter overflow

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Message-ID: <20170321171724.GC29116@leverpostej>
Date:   Tue, 21 Mar 2017 17:17:24 +0000
From:   Mark Rutland <mark.rutland@....com>
To:     Anurup M <anurupvasu@...il.com>
Cc:     will.deacon@....com, linux-kernel@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, anurup.m@...wei.com,
        zhangshaokun@...ilicon.com, tanxiaojun@...wei.com,
        xuwei5@...ilicon.com, sanil.kumar@...ilicon.com,
        john.garry@...wei.com, gabriele.paoloni@...wei.com,
        shiju.jose@...wei.com, huangdaode@...ilicon.com,
        linuxarm@...wei.com, dikshit.n@...wei.com, shyju.pv@...wei.com
Subject: Re: [PATCH v6 10/11] drivers: perf: hisi: use poll method when no
 IRQ for MN counter overflow

On Fri, Mar 10, 2017 at 01:29:01AM -0500, Anurup M wrote:
> When no IRQ is supported in hardware, use hrtimer to poll and
> update event counter and avoid overflow condition for MN PMU.
> An interval of 8 seconds is used for the hrtimer.

Please fold this into the main MN patch.

The comments on the L3 hrtimer patch also apply here.

Thanks,
Mark.