linux-kernel - Re: [PATCH v5 02/12] perf util: Define a structure for runtime shadow stats

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Date:   Sat, 2 Dec 2017 12:39:13 +0800
From:   "Jin, Yao" <yao.jin@...ux.intel.com>
To:     Arnaldo Carvalho de Melo <acme@...nel.org>
Cc:     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 v5 02/12] perf util: Define a structure for runtime shadow
 stats



On 12/1/2017 10:02 PM, Arnaldo Carvalho de Melo wrote:
> Em Fri, Dec 01, 2017 at 06:57:26PM +0800, Jin Yao escreveu:
>> Perf has a set of static variables to record the runtime shadow
>> metrics stats.
>>
>> While if we want to record the runtime shadow stats for per-thread,
>> it will be the limitation. This patch creates a structure and the
>> next patches will use this structure to update the runtime shadow
>> stats for per-thread.
>>
>> Signed-off-by: Jin Yao <yao.jin@...ux.intel.com>
>> ---
>>   tools/perf/util/stat-shadow.c | 11 -----------
>>   tools/perf/util/stat.h        | 44 ++++++++++++++++++++++++++++++++++++++++++-
>>   2 files changed, 43 insertions(+), 12 deletions(-)
>>
>> diff --git a/tools/perf/util/stat-shadow.c b/tools/perf/util/stat-shadow.c
>> index 855e35c..5853901 100644
>> --- a/tools/perf/util/stat-shadow.c
>> +++ b/tools/perf/util/stat-shadow.c
>> @@ -9,17 +9,6 @@
>>   #include "expr.h"
>>   #include "metricgroup.h"
>>   
>> -enum {
>> -	CTX_BIT_USER	= 1 << 0,
>> -	CTX_BIT_KERNEL	= 1 << 1,
>> -	CTX_BIT_HV	= 1 << 2,
>> -	CTX_BIT_HOST	= 1 << 3,
>> -	CTX_BIT_IDLE	= 1 << 4,
>> -	CTX_BIT_MAX	= 1 << 5,
>> -};
>> -
>> -#define NUM_CTX CTX_BIT_MAX
>> -
>>   /*
>>    * AGGR_GLOBAL: Use CPU 0
>>    * AGGR_SOCKET: Use first CPU of socket
>> diff --git a/tools/perf/util/stat.h b/tools/perf/util/stat.h
>> index eefca5c..290c51e 100644
>> --- a/tools/perf/util/stat.h
>> +++ b/tools/perf/util/stat.h
>> @@ -5,6 +5,8 @@
>>   #include <linux/types.h>
>>   #include <stdio.h>
>>   #include "xyarray.h"
>> +#include "evsel.h"
> 
> What is this for? You don't add anything in this patch that uses things
> from evsel.h.
> 
> I'm removing it, will fixup if later this becomes needed.
> 
> - Arnaldo
> 


That's fine, thanks Arnaldo!

Thanks
Jin Yao

>> +#include "rblist.h"
>>   
>>   struct stats
>>   {
>> @@ -43,6 +45,47 @@ enum aggr_mode {
>>   	AGGR_UNSET,
>>   };
>>   
>> +enum {
>> +	CTX_BIT_USER	= 1 << 0,
>> +	CTX_BIT_KERNEL	= 1 << 1,
>> +	CTX_BIT_HV	= 1 << 2,
>> +	CTX_BIT_HOST	= 1 << 3,
>> +	CTX_BIT_IDLE	= 1 << 4,
>> +	CTX_BIT_MAX	= 1 << 5,
>> +};
>> +
>> +#define NUM_CTX CTX_BIT_MAX
>> +
>> +enum stat_type {
>> +	STAT_NONE = 0,
>> +	STAT_NSECS,
>> +	STAT_CYCLES,
>> +	STAT_STALLED_CYCLES_FRONT,
>> +	STAT_STALLED_CYCLES_BACK,
>> +	STAT_BRANCHES,
>> +	STAT_CACHEREFS,
>> +	STAT_L1_DCACHE,
>> +	STAT_L1_ICACHE,
>> +	STAT_LL_CACHE,
>> +	STAT_ITLB_CACHE,
>> +	STAT_DTLB_CACHE,
>> +	STAT_CYCLES_IN_TX,
>> +	STAT_TRANSACTION,
>> +	STAT_ELISION,
>> +	STAT_TOPDOWN_TOTAL_SLOTS,
>> +	STAT_TOPDOWN_SLOTS_ISSUED,
>> +	STAT_TOPDOWN_SLOTS_RETIRED,
>> +	STAT_TOPDOWN_FETCH_BUBBLES,
>> +	STAT_TOPDOWN_RECOVERY_BUBBLES,
>> +	STAT_SMI_NUM,
>> +	STAT_APERF,
>> +	STAT_MAX
>> +};
>> +
>> +struct runtime_stat {
>> +	struct rblist value_list;
>> +};
>> +
>>   struct perf_stat_config {
>>   	enum aggr_mode	aggr_mode;
>>   	bool		scale;
>> @@ -92,7 +135,6 @@ struct perf_stat_output_ctx {
>>   	bool force_header;
>>   };
>>   
>> -struct rblist;
>>   void perf_stat__print_shadow_stats(struct perf_evsel *evsel,
>>   				   double avg, int cpu,
>>   				   struct perf_stat_output_ctx *out,
>> -- 
>> 2.7.4