linux-kernel - Re: [PATCH 1/5] perf tools: Count filtered entries to total period also

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Message-ID: <20140123132100.GA1180@krava.brq.redhat.com>
Date:	Thu, 23 Jan 2014 14:21:00 +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>,
	Ingo Molnar <mingo@...nel.org>,
	Paul Mackerras <paulus@...ba.org>,
	Namhyung Kim <namhyung.kim@....com>,
	LKML <linux-kernel@...r.kernel.org>,
	David Ahern <dsahern@...il.com>,
	Andi Kleen <andi@...stfloor.org>
Subject: Re: [PATCH 1/5] perf tools: Count filtered entries to total period
 also

On Thu, Jan 23, 2014 at 08:28:49AM +0900, Namhyung Kim wrote:
> Currently if a sample was filtered by command line option, it just
> dropped.  But this affects final output in that the percentage can be
> different since the filtered entries were not included to the total.
> 
> But user might want to see the original percentages when filter
> applied so change the behavior depends on a new symbol_conf.filter_
> relative value in order to be controlled by user later.
> 
> Signed-off-by: Namhyung Kim <namhyung@...nel.org>

SNIP

> +++ b/tools/perf/util/hist.h
> @@ -14,6 +14,13 @@ struct hist_entry;
>  struct addr_location;
>  struct symbol;
>  
> +enum hist_filter {
> +	HIST_FILTER__DSO,
> +	HIST_FILTER__THREAD,
> +	HIST_FILTER__PARENT,
> +	HIST_FILTER__SYMBOL,
> +};

in thread__find_addr_map we still have:
		...
                if ((cpumode == PERF_RECORD_MISC_GUEST_USER ||
                        cpumode == PERF_RECORD_MISC_GUEST_KERNEL) &&
                        !perf_guest)
                        al->filtered = true;
                if ((cpumode == PERF_RECORD_MISC_USER ||
                        cpumode == PERF_RECORD_MISC_KERNEL) &&
                        !perf_host)
                        al->filtered = true;
		...

seems like we need HIST_FILTER__GUEST|HOST

also in machine__resolve_callchain_sample there's old (and superfluos) init:
		...
                al.filtered = false;
                thread__find_addr_location(thread, machine, cpumode,
                                           MAP__FUNCTION, ip, &al);
		...


jirka
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