linux-kernel - Re: [PATCH] perf_events: fix Pentium4 raw event validation

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Date:	Tue, 25 Jan 2011 19:48:53 +0300
From:	Cyrill Gorcunov <gorcunov@...il.com>
To:	eranian@...gle.com
CC:	linux-kernel@...r.kernel.org, peterz@...radead.org, mingo@...e.hu,
	paulus@...ba.org, davem@...emloft.net, fweisbec@...il.com,
	perfmon2-devel@...ts.sf.net, eranian@...il.com,
	robert.richter@....com, acme@...hat.com, ming.m.lin@...el.com
Subject: Re: [PATCH] perf_events: fix Pentium4 raw event validation

On 01/25/2011 06:32 PM, Stephane Eranian wrote:
> This patches fixes some issies with raw event validation on Pentium 4 (Netburst)
> processors.
> 
> As I was testing libpfm4 Netburst support, I ran into two problems in the
> p4_validate_raw_event() function:
>    - the shared field must be checked ONLY when HT is on
>    - the binding to ESCR register was missing
> 
> The second item was causing raw events to not be encoded correctly compared
> to generic PMU events.
> 
> With this patch, I can now pass Netburst events to libpfm4 examples and
> get meaningful results:
>   $ task -e global_power_events:running:u  noploop 1
>   noploop for 1 seconds
>   3,206,304,898 global_power_events:running
> 
> Signed-off-by: Stephane Eranian <eranian@...gle.com>

Thanks a lot Stephane!

Acked-by: Cyrill Gorcunov <gorcunov@...nvz.org>
-- 
    Cyrill
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