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

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Date:   Fri, 1 Dec 2017 11:02:14 -0300
From:   Arnaldo Carvalho de Melo <acme@...nel.org>
To:     Jin Yao <yao.jin@...ux.intel.com>
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

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

> +#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