linux-kernel - Re: [PATCH 2/2] perf report: Display average IPC and IPC coverage per symbol

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Date:   Tue, 27 Nov 2018 11:52:08 +0800
From:   "Jin, Yao" <yao.jin@...ux.intel.com>
To:     Jiri Olsa <jolsa@...hat.com>
Cc:     acme@...nel.org, jolsa@...nel.org, peterz@...radead.org,
        mingo@...hat.com, alexander.shishkin@...ux.intel.com,
        Linux-kernel@...r.kernel.org, ak@...ux.intel.com,
        kan.liang@...el.com, yao.jin@...el.com
Subject: Re: [PATCH 2/2] perf report: Display average IPC and IPC coverage per
 symbol



On 11/26/2018 5:53 PM, Jiri Olsa wrote:
> On Mon, Nov 26, 2018 at 05:40:54PM +0800, Jin Yao wrote:
> 
> SNIP
> 
>> diff --git a/tools/perf/util/sort.c b/tools/perf/util/sort.c
>> index f96c005..94f62c8 100644
>> --- a/tools/perf/util/sort.c
>> +++ b/tools/perf/util/sort.c
>> @@ -13,6 +13,7 @@
>>   #include "strlist.h"
>>   #include <traceevent/event-parse.h>
>>   #include "mem-events.h"
>> +#include "annotate.h"
>>   #include <linux/kernel.h>
>>   
>>   regex_t		parent_regex;
>> @@ -422,6 +423,47 @@ struct sort_entry sort_srcline_to = {
>>   	.se_width_idx	= HISTC_SRCLINE_TO,
>>   };
>>   
>> +static int hist_entry__sym_ipc_snprintf(struct hist_entry *he, char *bf,
>> +					size_t size, unsigned int width)
>> +{
>> +
>> +	struct symbol *sym = he->ms.sym;
>> +	struct map *map = he->ms.map;
>> +	struct perf_evsel *evsel = hists_to_evsel(he->hists);
>> +	struct annotation *notes;
>> +	double ipc = 0.0, coverage = 0.0;
>> +	char tmp[64];
>> +
>> +	if (!sym)
>> +		return repsep_snprintf(bf, size, "%-*s", width, "-");
>> +
>> +	if (!sym->annotated &&
>> +	    symbol__annotate2(sym, map, evsel, &annotation__default_options,
>> +			      NULL) < 0) {
>> +		return 0;
>> +	}
>> +
>> +	sym->annotated = true;
> 
> I don't like this being set in here.. please move it to
> symbol__annotate2 or symbol__annotate, not sure which
> one of these is the best fit
> 

I have set this flag in symbol__annotate2 in v2.

>> +	notes = symbol__annotation(sym);
>> +
>> +	if (notes->hit_cycles)
>> +		ipc = notes->hit_insn / ((double)notes->hit_cycles);
>> +
>> +	if (notes->total_insn)
>> +		coverage = notes->cover_insn * 100.0 /
>> +			((double)notes->total_insn);
> 
> missing { } for multiline code in 'if' condition
> 

Fixed, thanks!

Thanks
Jin Yao

> thanks,
> jirka
>