From: Michael Ellerman <patch-notifications@ellerman•id.au>
To: Madhavan Srinivasan <maddy@linux•vnet.ibm.com>
Cc: Madhavan Srinivasan <maddy@linux•vnet.ibm.com>,
linuxppc-dev@lists•ozlabs.org
Subject: Re: powerpc/perf: Update default sdar_mode value for power9
Date: Fri, 11 Aug 2017 22:19:49 +1000 (AEST) [thread overview]
Message-ID: <3xTPFx1lWRz9t36@ozlabs.org> (raw)
In-Reply-To: <1500960951-18017-1-git-send-email-maddy@linux.vnet.ibm.com>
On Tue, 2017-07-25 at 05:35:51 UTC, Madhavan Srinivasan wrote:
> Commit 20dd4c624d251 ('powerpc/perf: Fix SDAR_MODE value for continous
> sampling on Power9') set the default sdar_mode value in MMCRA[SDAR_MODE]
> to be used as 0b01 (Update on TLB miss). And this value is set if sdar_mode
> from event is zero, or we are in continous sampling mode in power9 dd1.
>
> But it is preferred to have the sdar_mode value for power9 as
> 0b10 (Update on dcache miss) for better sampling updates instead
> of 0b01 (Update on TLB miss).
>
> Signed-off-by: Madhavan Srinivasan <maddy@linux•vnet.ibm.com>
> Acked-by: Anton Blanchard <anton@samba•org>
Applied to powerpc next, thanks.
https://git.kernel.org/powerpc/c/7aa345d84245a75760fc35a385fc55
cheers
prev parent reply other threads:[~2017-08-11 12:19 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-07-25 5:35 [PATCH] powerpc/perf: Update default sdar_mode value for power9 Madhavan Srinivasan
2017-07-25 12:24 ` Anton Blanchard
2017-08-11 12:19 ` Michael Ellerman [this message]
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