linux-kernel - Re: [PATCH 07/14] perf tools: Update cpumode for each cumulative entry

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Date:	Fri, 1 Nov 2013 13:55:51 +0100
From:	Jiri Olsa <jolsa@...hat.com>
To:	Namhyung Kim <namhyung@...nel.org>
Cc:	Arnaldo Carvalho de Melo <acme@...stprotocols.net>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Paul Mackerras <paulus@...ba.org>,
	Ingo Molnar <mingo@...nel.org>,
	Namhyung Kim <namhyung.kim@....com>,
	LKML <linux-kernel@...r.kernel.org>,
	Frederic Weisbecker <fweisbec@...il.com>,
	Stephane Eranian <eranian@...gle.com>,
	Rodrigo Campos <rodrigo@...g.com.ar>,
	Arun Sharma <asharma@...com>
Subject: Re: [PATCH 07/14] perf tools: Update cpumode for each cumulative
 entry

On Thu, Oct 31, 2013 at 03:56:09PM +0900, Namhyung Kim wrote:
> From: Namhyung Kim <namhyung.kim@....com>
> 
> The cpumode and level in struct addr_localtion was set for a sample
> and but updated as cumulative callchains were added.  This led to have
> non-matching symbol and cpumode in the output.
> 
> Update it accordingly based on the fact whether the map is a part of
> the kernel or not.
> 
> Cc: Arun Sharma <asharma@...com>
> Cc: Frederic Weisbecker <fweisbec@...il.com>
> Signed-off-by: Namhyung Kim <namhyung@...nel.org>
> ---
>  tools/perf/builtin-report.c | 25 ++++++++++++++++++++++++-
>  1 file changed, 24 insertions(+), 1 deletion(-)
> 
> diff --git a/tools/perf/builtin-report.c b/tools/perf/builtin-report.c
> index 92cbd5cd1ab1..1b152a8b7f51 100644
> --- a/tools/perf/builtin-report.c
> +++ b/tools/perf/builtin-report.c
> @@ -80,6 +80,7 @@ struct add_entry_iter {
>  	struct perf_report *rep;
>  	struct perf_evsel *evsel;
>  	struct perf_sample *sample;
> +	struct machine *machine;
>  	struct hist_entry *he;
>  	struct symbol *parent;
>  	void *priv;
> @@ -388,7 +389,7 @@ iter_finish_normal_entry(struct add_entry_iter *iter, struct addr_location *al)
>  
>  static int
>  iter_prepare_cumulative_entry(struct add_entry_iter *iter,
> -			      struct machine *machine __maybe_unused,
> +			      struct machine *machine,
>  			      struct perf_evsel *evsel,
>  			      struct addr_location *al __maybe_unused,
>  			      struct perf_sample *sample)
> @@ -404,6 +405,7 @@ iter_prepare_cumulative_entry(struct add_entry_iter *iter,
>  
>  	iter->evsel = evsel;
>  	iter->sample = sample;
> +	iter->machine = machine;
>  	return 0;
>  }
>  
> @@ -468,6 +470,27 @@ iter_next_cumulative_entry(struct add_entry_iter *iter __maybe_unused,
>  	if (al->sym == NULL)
>  		return 0;
>  
> +	if (al->map->groups == &iter->machine->kmaps) {
> +		if (machine__is_host(iter->machine)) {
> +			al->cpumode = PERF_RECORD_MISC_KERNEL;
> +			al->level = 'k';
> +		} else {
> +			al->cpumode = PERF_RECORD_MISC_GUEST_KERNEL;
> +			al->level = 'g';
> +		}
> +	} else {
> +		if (machine__is_host(iter->machine)) {
> +			al->cpumode = PERF_RECORD_MISC_USER;
> +			al->level = '.';
> +		} else if (perf_guest) {
> +			al->cpumode = PERF_RECORD_MISC_GUEST_USER;
> +			al->level = 'u';
> +		} else {
> +			al->cpumode = PERF_RECORD_MISC_HYPERVISOR;
> +			al->level = 'H';
> +		}
> +	}
> +

Looks like this is what thread__find_addr_map does as well.
Could above code go into a function used by both places?

jirka
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