linux-kernel - Re: [PATCH V5 1/7] perf,tools: introduce generic FEAT for CPU attributes

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Message-ID: <20150827181032.GA15010@krava.redhat.com>
Date:	Thu, 27 Aug 2015 20:10:32 +0200
From:	Jiri Olsa <jolsa@...hat.com>
To:	Kan Liang <kan.liang@...el.com>
Cc:	acme@...nel.org, jolsa@...nel.org, a.p.zijlstra@...llo.nl,
	luto@...nel.org, mingo@...hat.com, eranian@...gle.com,
	ak@...ux.intel.com, mark.rutland@....com, adrian.hunter@...el.com,
	namhyung@...nel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH V5 1/7] perf,tools: introduce generic FEAT for CPU
 attributes

On Tue, Aug 25, 2015 at 05:18:02AM -0400, Kan Liang wrote:

SNIP

> @@ -66,6 +67,11 @@ struct perf_header;
>  int perf_file_header__read(struct perf_file_header *header,
>  			   struct perf_header *ph, int fd);
>  
> +enum perf_header_cpu_attr {
> +	PERF_HEADER_CPU_MAX_FREQ	= 0,
> +	PERF_HEADER_CPU_ATTR_MAX,
> +};
> +
>  struct perf_session_env {
>  	char			*hostname;
>  	char			*os_release;
> @@ -89,6 +95,12 @@ struct perf_session_env {
>  	char			*sibling_threads;
>  	char			*numa_nodes;
>  	char			*pmu_mappings;
> +	union  {
> +		u64		cpu_attr[PERF_HEADER_CPU_ATTR_MAX];
> +		struct {
> +			u64	freq;

should it b maxfreq ?

jirka
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