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From: Michael Ellerman <patch-notifications@ellerman.id.au>
To: Madhavan Srinivasan <maddy@linux.ibm.com>, mpe@ellerman.id.au
Cc: linuxppc-dev@lists.ozlabs.org
Subject: Re: [PATCH] powerpc/perf: Update MMCR2 to support event exclude_idle
Date: Mon, 04 Jul 2022 21:34:02 +1000	[thread overview]
Message-ID: <165693444269.9954.4761798275894011090.b4-ty@ellerman.id.au> (raw)
In-Reply-To: <20210429050208.266619-1-maddy@linux.ibm.com>

On Thu, 29 Apr 2021 10:32:08 +0530, Madhavan Srinivasan wrote:
> struct perf_event_attr supports exclude counting of idle task.
> This is sent to kernel via perf_event_attr.exclude_idle and
> in perf tool, user can use ":I" event modifier to enable this
> for specific event.
> 
> Monitor Mode Control Register 2 (MMCR2) SPR has control bits
> for each PMCs to freeze counting based on the Control Register
> CTRL[RUN] state. CTRL[RUN] is not set when idle task is
> running. Patch adds a check for event attr.exclude_idle to
> set MMCR2[FCnWAIT] bit.
> 
> [...]

Applied to powerpc/next.

[1/1] powerpc/perf: Update MMCR2 to support event exclude_idle
      https://git.kernel.org/powerpc/c/5969e0c1c7e2132d8b2cf80168072b1195ddce46

cheers

      reply	other threads:[~2022-07-04 11:43 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-04-29  5:02 [PATCH] powerpc/perf: Update MMCR2 to support event exclude_idle Madhavan Srinivasan
2022-07-04 11:34 ` Michael Ellerman [this message]

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