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Date:   Fri, 1 Dec 2017 11:21:48 -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 06/12] perf util: Update and print per-thread shadow
 stats

Em Fri, Dec 01, 2017 at 06:57:30PM +0800, Jin Yao escreveu:
> The functions perf_stat__update_shadow_stats() and
> perf_stat__print_shadow_statss() are called to update
> and print the shadow stats on a set of static variables.
> 
> But the static variables are the limitations to support
> per-thread shadow stats.
> 
> This patch lets the perf_stat__update_shadow_stats() support
> to update the shadow stats on a input parameter 'stat' and
> uses update_runtime_stat() to update the stats. It will not
> directly update the static variables as before.
> 
> And this patch also lets the perf_stat__print_shadow_stats()

When 'also' appears on a patch usually it means it should be split in
two, one for the things up to the 'also' and another for the remaining
parts.

A patch that has these stats:

5 files changed, 219 insertions(+), 120 deletions(-)

raises eyebrows :-\

I'm trying now to break it into at least two, one for printing and the
other for the rest.

- Arnaldo

> support to print the shadow stats from a input parameter 'stat'.
> 
> It will not directly get value from static variable. Instead, it now
> uses runtime_stat_avg() and runtime_stat_n() to get and compute the
> values.
> 
> Signed-off-by: Jin Yao <yao.jin@...ux.intel.com>
> ---
>  tools/perf/builtin-script.c   |   6 +-
>  tools/perf/builtin-stat.c     |  27 ++--
>  tools/perf/util/stat-shadow.c | 293 +++++++++++++++++++++++++++---------------
>  tools/perf/util/stat.c        |   8 +-
>  tools/perf/util/stat.h        |   5 +-
>  5 files changed, 219 insertions(+), 120 deletions(-)
> 
> diff --git a/tools/perf/builtin-script.c b/tools/perf/builtin-script.c
> index 39d8b55..fac6f05 100644
> --- a/tools/perf/builtin-script.c
> +++ b/tools/perf/builtin-script.c
> @@ -1548,7 +1548,8 @@ static void perf_sample__fprint_metric(struct perf_script *script,
>  	val = sample->period * evsel->scale;
>  	perf_stat__update_shadow_stats(evsel,
>  				       val,
> -				       sample->cpu);
> +				       sample->cpu,
> +				       &rt_stat);
>  	evsel_script(evsel)->val = val;
>  	if (evsel_script(evsel->leader)->gnum == evsel->leader->nr_members) {
>  		for_each_group_member (ev2, evsel->leader) {
> @@ -1556,7 +1557,8 @@ static void perf_sample__fprint_metric(struct perf_script *script,
>  						      evsel_script(ev2)->val,
>  						      sample->cpu,
>  						      &ctx,
> -						      NULL);
> +						      NULL,
> +						      &rt_stat);
>  		}
>  		evsel_script(evsel->leader)->gnum = 0;
>  	}
> diff --git a/tools/perf/builtin-stat.c b/tools/perf/builtin-stat.c
> index a027b47..1edc082 100644
> --- a/tools/perf/builtin-stat.c
> +++ b/tools/perf/builtin-stat.c
> @@ -1097,7 +1097,8 @@ static void abs_printout(int id, int nr, struct perf_evsel *evsel, double avg)
>  }
>  
>  static void printout(int id, int nr, struct perf_evsel *counter, double uval,
> -		     char *prefix, u64 run, u64 ena, double noise)
> +		     char *prefix, u64 run, u64 ena, double noise,
> +		     struct runtime_stat *stat)
>  {
>  	struct perf_stat_output_ctx out;
>  	struct outstate os = {
> @@ -1190,7 +1191,8 @@ static void printout(int id, int nr, struct perf_evsel *counter, double uval,
>  
>  	perf_stat__print_shadow_stats(counter, uval,
>  				first_shadow_cpu(counter, id),
> -				&out, &metric_events);
> +				&out, &metric_events,
> +				stat);
>  	if (!csv_output && !metric_only) {
>  		print_noise(counter, noise);
>  		print_running(run, ena);
> @@ -1214,7 +1216,8 @@ static void aggr_update_shadow(void)
>  				val += perf_counts(counter->counts, cpu, 0)->val;
>  			}
>  			perf_stat__update_shadow_stats(counter, val,
> -						       first_shadow_cpu(counter, id));
> +					first_shadow_cpu(counter, id),
> +					&rt_stat);
>  		}
>  	}
>  }
> @@ -1334,7 +1337,8 @@ static void print_aggr(char *prefix)
>  				fprintf(output, "%s", prefix);
>  
>  			uval = val * counter->scale;
> -			printout(id, nr, counter, uval, prefix, run, ena, 1.0);
> +			printout(id, nr, counter, uval, prefix, run, ena, 1.0,
> +				 &rt_stat);
>  			if (!metric_only)
>  				fputc('\n', output);
>  		}
> @@ -1364,7 +1368,8 @@ static void print_aggr_thread(struct perf_evsel *counter, char *prefix)
>  			fprintf(output, "%s", prefix);
>  
>  		uval = val * counter->scale;
> -		printout(thread, 0, counter, uval, prefix, run, ena, 1.0);
> +		printout(thread, 0, counter, uval, prefix, run, ena, 1.0,
> +			 &rt_stat);
>  		fputc('\n', output);
>  	}
>  }
> @@ -1401,7 +1406,8 @@ static void print_counter_aggr(struct perf_evsel *counter, char *prefix)
>  		fprintf(output, "%s", prefix);
>  
>  	uval = cd.avg * counter->scale;
> -	printout(-1, 0, counter, uval, prefix, cd.avg_running, cd.avg_enabled, cd.avg);
> +	printout(-1, 0, counter, uval, prefix, cd.avg_running, cd.avg_enabled,
> +		 cd.avg, &rt_stat);
>  	if (!metric_only)
>  		fprintf(output, "\n");
>  }
> @@ -1440,7 +1446,8 @@ static void print_counter(struct perf_evsel *counter, char *prefix)
>  			fprintf(output, "%s", prefix);
>  
>  		uval = val * counter->scale;
> -		printout(cpu, 0, counter, uval, prefix, run, ena, 1.0);
> +		printout(cpu, 0, counter, uval, prefix, run, ena, 1.0,
> +			 &rt_stat);
>  
>  		fputc('\n', output);
>  	}
> @@ -1472,7 +1479,8 @@ static void print_no_aggr_metric(char *prefix)
>  			run = perf_counts(counter->counts, cpu, 0)->run;
>  
>  			uval = val * counter->scale;
> -			printout(cpu, 0, counter, uval, prefix, run, ena, 1.0);
> +			printout(cpu, 0, counter, uval, prefix, run, ena, 1.0,
> +				 &rt_stat);
>  		}
>  		fputc('\n', stat_config.output);
>  	}
> @@ -1528,7 +1536,8 @@ static void print_metric_headers(const char *prefix, bool no_indent)
>  		perf_stat__print_shadow_stats(counter, 0,
>  					      0,
>  					      &out,
> -					      &metric_events);
> +					      &metric_events,
> +					      &rt_stat);
>  	}
>  	fputc('\n', stat_config.output);
>  }
> diff --git a/tools/perf/util/stat-shadow.c b/tools/perf/util/stat-shadow.c
> index e60c321..0d34d5e 100644
> --- a/tools/perf/util/stat-shadow.c
> +++ b/tools/perf/util/stat-shadow.c
> @@ -116,19 +116,29 @@ static void saved_value_delete(struct rblist *rblist __maybe_unused,
>  
>  static struct saved_value *saved_value_lookup(struct perf_evsel *evsel,
>  					      int cpu,
> -					      bool create)
> +					      bool create,
> +					      enum stat_type type,
> +					      int ctx,
> +					      struct runtime_stat *stat)
>  {
> +	struct rblist *rblist;
>  	struct rb_node *nd;
>  	struct saved_value dm = {
>  		.cpu = cpu,
>  		.evsel = evsel,
> +		.type = type,
> +		.ctx = ctx,
> +		.stat = stat,
>  	};
> -	nd = rblist__find(&runtime_saved_values, &dm);
> +
> +	rblist = &stat->value_list;
> +
> +	nd = rblist__find(rblist, &dm);
>  	if (nd)
>  		return container_of(nd, struct saved_value, rb_node);
>  	if (create) {
> -		rblist__add_node(&runtime_saved_values, &dm);
> -		nd = rblist__find(&runtime_saved_values, &dm);
> +		rblist__add_node(rblist, &dm);
> +		nd = rblist__find(rblist, &dm);
>  		if (nd)
>  			return container_of(nd, struct saved_value, rb_node);
>  	}
> @@ -217,13 +227,24 @@ void perf_stat__reset_shadow_stats(void)
>  	}
>  }
>  
> +static void update_runtime_stat(struct runtime_stat *stat,
> +				enum stat_type type,
> +				int ctx, int cpu, u64 count)
> +{
> +	struct saved_value *v = saved_value_lookup(NULL, cpu, true,
> +						   type, ctx, stat);
> +
> +	if (v)
> +		update_stats(&v->stats, count);
> +}
> +
>  /*
>   * Update various tracking values we maintain to print
>   * more semantic information such as miss/hit ratios,
>   * instruction rates, etc:
>   */
>  void perf_stat__update_shadow_stats(struct perf_evsel *counter, u64 count,
> -				    int cpu)
> +				    int cpu, struct runtime_stat *stat)
>  {
>  	int ctx = evsel_context(counter);
>  
> @@ -231,50 +252,58 @@ void perf_stat__update_shadow_stats(struct perf_evsel *counter, u64 count,
>  
>  	if (perf_evsel__match(counter, SOFTWARE, SW_TASK_CLOCK) ||
>  	    perf_evsel__match(counter, SOFTWARE, SW_CPU_CLOCK))
> -		update_stats(&runtime_nsecs_stats[cpu], count);
> +		update_runtime_stat(stat, STAT_NSECS, 0, cpu, count);
>  	else if (perf_evsel__match(counter, HARDWARE, HW_CPU_CYCLES))
> -		update_stats(&runtime_cycles_stats[ctx][cpu], count);
> +		update_runtime_stat(stat, STAT_CYCLES, ctx, cpu, count);
>  	else if (perf_stat_evsel__is(counter, CYCLES_IN_TX))
> -		update_stats(&runtime_cycles_in_tx_stats[ctx][cpu], count);
> +		update_runtime_stat(stat, STAT_CYCLES_IN_TX, ctx, cpu, count);
>  	else if (perf_stat_evsel__is(counter, TRANSACTION_START))
> -		update_stats(&runtime_transaction_stats[ctx][cpu], count);
> +		update_runtime_stat(stat, STAT_TRANSACTION, ctx, cpu, count);
>  	else if (perf_stat_evsel__is(counter, ELISION_START))
> -		update_stats(&runtime_elision_stats[ctx][cpu], count);
> +		update_runtime_stat(stat, STAT_ELISION, ctx, cpu, count);
>  	else if (perf_stat_evsel__is(counter, TOPDOWN_TOTAL_SLOTS))
> -		update_stats(&runtime_topdown_total_slots[ctx][cpu], count);
> +		update_runtime_stat(stat, STAT_TOPDOWN_TOTAL_SLOTS,
> +				    ctx, cpu, count);
>  	else if (perf_stat_evsel__is(counter, TOPDOWN_SLOTS_ISSUED))
> -		update_stats(&runtime_topdown_slots_issued[ctx][cpu], count);
> +		update_runtime_stat(stat, STAT_TOPDOWN_SLOTS_ISSUED,
> +				    ctx, cpu, count);
>  	else if (perf_stat_evsel__is(counter, TOPDOWN_SLOTS_RETIRED))
> -		update_stats(&runtime_topdown_slots_retired[ctx][cpu], count);
> +		update_runtime_stat(stat, STAT_TOPDOWN_SLOTS_RETIRED,
> +				    ctx, cpu, count);
>  	else if (perf_stat_evsel__is(counter, TOPDOWN_FETCH_BUBBLES))
> -		update_stats(&runtime_topdown_fetch_bubbles[ctx][cpu], count);
> +		update_runtime_stat(stat, STAT_TOPDOWN_FETCH_BUBBLES,
> +				    ctx, cpu, count);
>  	else if (perf_stat_evsel__is(counter, TOPDOWN_RECOVERY_BUBBLES))
> -		update_stats(&runtime_topdown_recovery_bubbles[ctx][cpu], count);
> +		update_runtime_stat(stat, STAT_TOPDOWN_RECOVERY_BUBBLES,
> +				    ctx, cpu, count);
>  	else if (perf_evsel__match(counter, HARDWARE, HW_STALLED_CYCLES_FRONTEND))
> -		update_stats(&runtime_stalled_cycles_front_stats[ctx][cpu], count);
> +		update_runtime_stat(stat, STAT_STALLED_CYCLES_FRONT,
> +				    ctx, cpu, count);
>  	else if (perf_evsel__match(counter, HARDWARE, HW_STALLED_CYCLES_BACKEND))
> -		update_stats(&runtime_stalled_cycles_back_stats[ctx][cpu], count);
> +		update_runtime_stat(stat, STAT_STALLED_CYCLES_BACK,
> +				    ctx, cpu, count);
>  	else if (perf_evsel__match(counter, HARDWARE, HW_BRANCH_INSTRUCTIONS))
> -		update_stats(&runtime_branches_stats[ctx][cpu], count);
> +		update_runtime_stat(stat, STAT_BRANCHES, ctx, cpu, count);
>  	else if (perf_evsel__match(counter, HARDWARE, HW_CACHE_REFERENCES))
> -		update_stats(&runtime_cacherefs_stats[ctx][cpu], count);
> +		update_runtime_stat(stat, STAT_CACHEREFS, ctx, cpu, count);
>  	else if (perf_evsel__match(counter, HW_CACHE, HW_CACHE_L1D))
> -		update_stats(&runtime_l1_dcache_stats[ctx][cpu], count);
> +		update_runtime_stat(stat, STAT_L1_DCACHE, ctx, cpu, count);
>  	else if (perf_evsel__match(counter, HW_CACHE, HW_CACHE_L1I))
> -		update_stats(&runtime_ll_cache_stats[ctx][cpu], count);
> +		update_runtime_stat(stat, STAT_L1_ICACHE, ctx, cpu, count);
>  	else if (perf_evsel__match(counter, HW_CACHE, HW_CACHE_LL))
> -		update_stats(&runtime_ll_cache_stats[ctx][cpu], count);
> +		update_runtime_stat(stat, STAT_LL_CACHE, ctx, cpu, count);
>  	else if (perf_evsel__match(counter, HW_CACHE, HW_CACHE_DTLB))
> -		update_stats(&runtime_dtlb_cache_stats[ctx][cpu], count);
> +		update_runtime_stat(stat, STAT_DTLB_CACHE, ctx, cpu, count);
>  	else if (perf_evsel__match(counter, HW_CACHE, HW_CACHE_ITLB))
> -		update_stats(&runtime_itlb_cache_stats[ctx][cpu], count);
> +		update_runtime_stat(stat, STAT_ITLB_CACHE, ctx, cpu, count);
>  	else if (perf_stat_evsel__is(counter, SMI_NUM))
> -		update_stats(&runtime_smi_num_stats[ctx][cpu], count);
> +		update_runtime_stat(stat, STAT_SMI_NUM, ctx, cpu, count);
>  	else if (perf_stat_evsel__is(counter, APERF))
> -		update_stats(&runtime_aperf_stats[ctx][cpu], count);
> +		update_runtime_stat(stat, STAT_APERF, ctx, cpu, count);
>  
>  	if (counter->collect_stat) {
> -		struct saved_value *v = saved_value_lookup(counter, cpu, true);
> +		struct saved_value *v = saved_value_lookup(counter, cpu, true,
> +							   STAT_NONE, 0, stat);
>  		update_stats(&v->stats, count);
>  	}
>  }
> @@ -395,15 +424,40 @@ void perf_stat__collect_metric_expr(struct perf_evlist *evsel_list)
>  	}
>  }
>  
> +static double runtime_stat_avg(struct runtime_stat *stat,
> +			       enum stat_type type, int ctx, int cpu)
> +{
> +	struct saved_value *v;
> +
> +	v = saved_value_lookup(NULL, cpu, false, type, ctx, stat);
> +	if (!v)
> +		return 0.0;
> +
> +	return avg_stats(&v->stats);
> +}
> +
> +static double runtime_stat_n(struct runtime_stat *stat,
> +			     enum stat_type type, int ctx, int cpu)
> +{
> +	struct saved_value *v;
> +
> +	v = saved_value_lookup(NULL, cpu, false, type, ctx, stat);
> +	if (!v)
> +		return 0.0;
> +
> +	return v->stats.n;
> +}
> +
>  static void print_stalled_cycles_frontend(int cpu,
>  					  struct perf_evsel *evsel, double avg,
> -					  struct perf_stat_output_ctx *out)
> +					  struct perf_stat_output_ctx *out,
> +					  struct runtime_stat *stat)
>  {
>  	double total, ratio = 0.0;
>  	const char *color;
>  	int ctx = evsel_context(evsel);
>  
> -	total = avg_stats(&runtime_cycles_stats[ctx][cpu]);
> +	total = runtime_stat_avg(stat, STAT_CYCLES, ctx, cpu);
>  
>  	if (total)
>  		ratio = avg / total * 100.0;
> @@ -419,13 +473,14 @@ static void print_stalled_cycles_frontend(int cpu,
>  
>  static void print_stalled_cycles_backend(int cpu,
>  					 struct perf_evsel *evsel, double avg,
> -					 struct perf_stat_output_ctx *out)
> +					 struct perf_stat_output_ctx *out,
> +					 struct runtime_stat *stat)
>  {
>  	double total, ratio = 0.0;
>  	const char *color;
>  	int ctx = evsel_context(evsel);
>  
> -	total = avg_stats(&runtime_cycles_stats[ctx][cpu]);
> +	total = runtime_stat_avg(stat, STAT_CYCLES, ctx, cpu);
>  
>  	if (total)
>  		ratio = avg / total * 100.0;
> @@ -438,13 +493,14 @@ static void print_stalled_cycles_backend(int cpu,
>  static void print_branch_misses(int cpu,
>  				struct perf_evsel *evsel,
>  				double avg,
> -				struct perf_stat_output_ctx *out)
> +				struct perf_stat_output_ctx *out,
> +				struct runtime_stat *stat)
>  {
>  	double total, ratio = 0.0;
>  	const char *color;
>  	int ctx = evsel_context(evsel);
>  
> -	total = avg_stats(&runtime_branches_stats[ctx][cpu]);
> +	total = runtime_stat_avg(stat, STAT_BRANCHES, ctx, cpu);
>  
>  	if (total)
>  		ratio = avg / total * 100.0;
> @@ -457,13 +513,15 @@ static void print_branch_misses(int cpu,
>  static void print_l1_dcache_misses(int cpu,
>  				   struct perf_evsel *evsel,
>  				   double avg,
> -				   struct perf_stat_output_ctx *out)
> +				   struct perf_stat_output_ctx *out,
> +				   struct runtime_stat *stat)
> +
>  {
>  	double total, ratio = 0.0;
>  	const char *color;
>  	int ctx = evsel_context(evsel);
>  
> -	total = avg_stats(&runtime_l1_dcache_stats[ctx][cpu]);
> +	total = runtime_stat_avg(stat, STAT_L1_DCACHE, ctx, cpu);
>  
>  	if (total)
>  		ratio = avg / total * 100.0;
> @@ -476,13 +534,15 @@ static void print_l1_dcache_misses(int cpu,
>  static void print_l1_icache_misses(int cpu,
>  				   struct perf_evsel *evsel,
>  				   double avg,
> -				   struct perf_stat_output_ctx *out)
> +				   struct perf_stat_output_ctx *out,
> +				   struct runtime_stat *stat)
> +
>  {
>  	double total, ratio = 0.0;
>  	const char *color;
>  	int ctx = evsel_context(evsel);
>  
> -	total = avg_stats(&runtime_l1_icache_stats[ctx][cpu]);
> +	total = runtime_stat_avg(stat, STAT_L1_ICACHE, ctx, cpu);
>  
>  	if (total)
>  		ratio = avg / total * 100.0;
> @@ -494,13 +554,14 @@ static void print_l1_icache_misses(int cpu,
>  static void print_dtlb_cache_misses(int cpu,
>  				    struct perf_evsel *evsel,
>  				    double avg,
> -				    struct perf_stat_output_ctx *out)
> +				    struct perf_stat_output_ctx *out,
> +				    struct runtime_stat *stat)
>  {
>  	double total, ratio = 0.0;
>  	const char *color;
>  	int ctx = evsel_context(evsel);
>  
> -	total = avg_stats(&runtime_dtlb_cache_stats[ctx][cpu]);
> +	total = runtime_stat_avg(stat, STAT_DTLB_CACHE, ctx, cpu);
>  
>  	if (total)
>  		ratio = avg / total * 100.0;
> @@ -512,13 +573,14 @@ static void print_dtlb_cache_misses(int cpu,
>  static void print_itlb_cache_misses(int cpu,
>  				    struct perf_evsel *evsel,
>  				    double avg,
> -				    struct perf_stat_output_ctx *out)
> +				    struct perf_stat_output_ctx *out,
> +				    struct runtime_stat *stat)
>  {
>  	double total, ratio = 0.0;
>  	const char *color;
>  	int ctx = evsel_context(evsel);
>  
> -	total = avg_stats(&runtime_itlb_cache_stats[ctx][cpu]);
> +	total = runtime_stat_avg(stat, STAT_ITLB_CACHE, ctx, cpu);
>  
>  	if (total)
>  		ratio = avg / total * 100.0;
> @@ -530,13 +592,14 @@ static void print_itlb_cache_misses(int cpu,
>  static void print_ll_cache_misses(int cpu,
>  				  struct perf_evsel *evsel,
>  				  double avg,
> -				  struct perf_stat_output_ctx *out)
> +				  struct perf_stat_output_ctx *out,
> +				  struct runtime_stat *stat)
>  {
>  	double total, ratio = 0.0;
>  	const char *color;
>  	int ctx = evsel_context(evsel);
>  
> -	total = avg_stats(&runtime_ll_cache_stats[ctx][cpu]);
> +	total = runtime_stat_avg(stat, STAT_LL_CACHE, ctx, cpu);
>  
>  	if (total)
>  		ratio = avg / total * 100.0;
> @@ -594,68 +657,72 @@ static double sanitize_val(double x)
>  	return x;
>  }
>  
> -static double td_total_slots(int ctx, int cpu)
> +static double td_total_slots(int ctx, int cpu, struct runtime_stat *stat)
>  {
> -	return avg_stats(&runtime_topdown_total_slots[ctx][cpu]);
> +	return runtime_stat_avg(stat, STAT_TOPDOWN_TOTAL_SLOTS, ctx, cpu);
>  }
>  
> -static double td_bad_spec(int ctx, int cpu)
> +static double td_bad_spec(int ctx, int cpu, struct runtime_stat *stat)
>  {
>  	double bad_spec = 0;
>  	double total_slots;
>  	double total;
>  
> -	total = avg_stats(&runtime_topdown_slots_issued[ctx][cpu]) -
> -		avg_stats(&runtime_topdown_slots_retired[ctx][cpu]) +
> -		avg_stats(&runtime_topdown_recovery_bubbles[ctx][cpu]);
> -	total_slots = td_total_slots(ctx, cpu);
> +	total = runtime_stat_avg(stat, STAT_TOPDOWN_SLOTS_ISSUED, ctx, cpu) -
> +		runtime_stat_avg(stat, STAT_TOPDOWN_SLOTS_RETIRED, ctx, cpu) +
> +		runtime_stat_avg(stat, STAT_TOPDOWN_RECOVERY_BUBBLES, ctx, cpu);
> +
> +	total_slots = td_total_slots(ctx, cpu, stat);
>  	if (total_slots)
>  		bad_spec = total / total_slots;
>  	return sanitize_val(bad_spec);
>  }
>  
> -static double td_retiring(int ctx, int cpu)
> +static double td_retiring(int ctx, int cpu, struct runtime_stat *stat)
>  {
>  	double retiring = 0;
> -	double total_slots = td_total_slots(ctx, cpu);
> -	double ret_slots = avg_stats(&runtime_topdown_slots_retired[ctx][cpu]);
> +	double total_slots = td_total_slots(ctx, cpu, stat);
> +	double ret_slots = runtime_stat_avg(stat, STAT_TOPDOWN_SLOTS_RETIRED,
> +					    ctx, cpu);
>  
>  	if (total_slots)
>  		retiring = ret_slots / total_slots;
>  	return retiring;
>  }
>  
> -static double td_fe_bound(int ctx, int cpu)
> +static double td_fe_bound(int ctx, int cpu, struct runtime_stat *stat)
>  {
>  	double fe_bound = 0;
> -	double total_slots = td_total_slots(ctx, cpu);
> -	double fetch_bub = avg_stats(&runtime_topdown_fetch_bubbles[ctx][cpu]);
> +	double total_slots = td_total_slots(ctx, cpu, stat);
> +	double fetch_bub = runtime_stat_avg(stat, STAT_TOPDOWN_FETCH_BUBBLES,
> +					    ctx, cpu);
>  
>  	if (total_slots)
>  		fe_bound = fetch_bub / total_slots;
>  	return fe_bound;
>  }
>  
> -static double td_be_bound(int ctx, int cpu)
> +static double td_be_bound(int ctx, int cpu, struct runtime_stat *stat)
>  {
> -	double sum = (td_fe_bound(ctx, cpu) +
> -		      td_bad_spec(ctx, cpu) +
> -		      td_retiring(ctx, cpu));
> +	double sum = (td_fe_bound(ctx, cpu, stat) +
> +		      td_bad_spec(ctx, cpu, stat) +
> +		      td_retiring(ctx, cpu, stat));
>  	if (sum == 0)
>  		return 0;
>  	return sanitize_val(1.0 - sum);
>  }
>  
>  static void print_smi_cost(int cpu, struct perf_evsel *evsel,
> -			   struct perf_stat_output_ctx *out)
> +			   struct perf_stat_output_ctx *out,
> +			   struct runtime_stat *stat)
>  {
>  	double smi_num, aperf, cycles, cost = 0.0;
>  	int ctx = evsel_context(evsel);
>  	const char *color = NULL;
>  
> -	smi_num = avg_stats(&runtime_smi_num_stats[ctx][cpu]);
> -	aperf = avg_stats(&runtime_aperf_stats[ctx][cpu]);
> -	cycles = avg_stats(&runtime_cycles_stats[ctx][cpu]);
> +	smi_num = runtime_stat_avg(stat, STAT_SMI_NUM, ctx, cpu);
> +	aperf = runtime_stat_avg(stat, STAT_APERF, ctx, cpu);
> +	cycles = runtime_stat_avg(stat, STAT_CYCLES, ctx, cpu);
>  
>  	if ((cycles == 0) || (aperf == 0))
>  		return;
> @@ -675,7 +742,8 @@ static void generic_metric(const char *metric_expr,
>  			   const char *metric_name,
>  			   double avg,
>  			   int cpu,
> -			   struct perf_stat_output_ctx *out)
> +			   struct perf_stat_output_ctx *out,
> +			   struct runtime_stat *stat)
>  {
>  	print_metric_t print_metric = out->print_metric;
>  	struct parse_ctx pctx;
> @@ -694,7 +762,8 @@ static void generic_metric(const char *metric_expr,
>  			stats = &walltime_nsecs_stats;
>  			scale = 1e-9;
>  		} else {
> -			v = saved_value_lookup(metric_events[i], cpu, false);
> +			v = saved_value_lookup(metric_events[i], cpu, false,
> +					       STAT_NONE, 0, stat);
>  			if (!v)
>  				break;
>  			stats = &v->stats;
> @@ -722,7 +791,8 @@ static void generic_metric(const char *metric_expr,
>  void perf_stat__print_shadow_stats(struct perf_evsel *evsel,
>  				   double avg, int cpu,
>  				   struct perf_stat_output_ctx *out,
> -				   struct rblist *metric_events)
> +				   struct rblist *metric_events,
> +				   struct runtime_stat *stat)
>  {
>  	void *ctxp = out->ctx;
>  	print_metric_t print_metric = out->print_metric;
> @@ -733,7 +803,8 @@ void perf_stat__print_shadow_stats(struct perf_evsel *evsel,
>  	int num = 1;
>  
>  	if (perf_evsel__match(evsel, HARDWARE, HW_INSTRUCTIONS)) {
> -		total = avg_stats(&runtime_cycles_stats[ctx][cpu]);
> +		total = runtime_stat_avg(stat, STAT_CYCLES, ctx, cpu);
> +
>  		if (total) {
>  			ratio = avg / total;
>  			print_metric(ctxp, NULL, "%7.2f ",
> @@ -741,8 +812,13 @@ void perf_stat__print_shadow_stats(struct perf_evsel *evsel,
>  		} else {
>  			print_metric(ctxp, NULL, NULL, "insn per cycle", 0);
>  		}
> -		total = avg_stats(&runtime_stalled_cycles_front_stats[ctx][cpu]);
> -		total = max(total, avg_stats(&runtime_stalled_cycles_back_stats[ctx][cpu]));
> +
> +		total = runtime_stat_avg(stat, STAT_STALLED_CYCLES_FRONT,
> +					 ctx, cpu);
> +
> +		total = max(total, runtime_stat_avg(stat,
> +						    STAT_STALLED_CYCLES_BACK,
> +						    ctx, cpu));
>  
>  		if (total && avg) {
>  			out->new_line(ctxp);
> @@ -755,8 +831,8 @@ void perf_stat__print_shadow_stats(struct perf_evsel *evsel,
>  				     "stalled cycles per insn", 0);
>  		}
>  	} else if (perf_evsel__match(evsel, HARDWARE, HW_BRANCH_MISSES)) {
> -		if (runtime_branches_stats[ctx][cpu].n != 0)
> -			print_branch_misses(cpu, evsel, avg, out);
> +		if (runtime_stat_n(stat, STAT_BRANCHES, ctx, cpu) != 0)
> +			print_branch_misses(cpu, evsel, avg, out, stat);
>  		else
>  			print_metric(ctxp, NULL, NULL, "of all branches", 0);
>  	} else if (
> @@ -764,8 +840,9 @@ void perf_stat__print_shadow_stats(struct perf_evsel *evsel,
>  		evsel->attr.config ==  ( PERF_COUNT_HW_CACHE_L1D |
>  					((PERF_COUNT_HW_CACHE_OP_READ) << 8) |
>  					 ((PERF_COUNT_HW_CACHE_RESULT_MISS) << 16))) {
> -		if (runtime_l1_dcache_stats[ctx][cpu].n != 0)
> -			print_l1_dcache_misses(cpu, evsel, avg, out);
> +
> +		if (runtime_stat_n(stat, STAT_L1_DCACHE, ctx, cpu) != 0)
> +			print_l1_dcache_misses(cpu, evsel, avg, out, stat);
>  		else
>  			print_metric(ctxp, NULL, NULL, "of all L1-dcache hits", 0);
>  	} else if (
> @@ -773,8 +850,9 @@ void perf_stat__print_shadow_stats(struct perf_evsel *evsel,
>  		evsel->attr.config ==  ( PERF_COUNT_HW_CACHE_L1I |
>  					((PERF_COUNT_HW_CACHE_OP_READ) << 8) |
>  					 ((PERF_COUNT_HW_CACHE_RESULT_MISS) << 16))) {
> -		if (runtime_l1_icache_stats[ctx][cpu].n != 0)
> -			print_l1_icache_misses(cpu, evsel, avg, out);
> +
> +		if (runtime_stat_n(stat, STAT_L1_ICACHE, ctx, cpu) != 0)
> +			print_l1_icache_misses(cpu, evsel, avg, out, stat);
>  		else
>  			print_metric(ctxp, NULL, NULL, "of all L1-icache hits", 0);
>  	} else if (
> @@ -782,8 +860,9 @@ void perf_stat__print_shadow_stats(struct perf_evsel *evsel,
>  		evsel->attr.config ==  ( PERF_COUNT_HW_CACHE_DTLB |
>  					((PERF_COUNT_HW_CACHE_OP_READ) << 8) |
>  					 ((PERF_COUNT_HW_CACHE_RESULT_MISS) << 16))) {
> -		if (runtime_dtlb_cache_stats[ctx][cpu].n != 0)
> -			print_dtlb_cache_misses(cpu, evsel, avg, out);
> +
> +		if (runtime_stat_n(stat, STAT_DTLB_CACHE, ctx, cpu) != 0)
> +			print_dtlb_cache_misses(cpu, evsel, avg, out, stat);
>  		else
>  			print_metric(ctxp, NULL, NULL, "of all dTLB cache hits", 0);
>  	} else if (
> @@ -791,8 +870,9 @@ void perf_stat__print_shadow_stats(struct perf_evsel *evsel,
>  		evsel->attr.config ==  ( PERF_COUNT_HW_CACHE_ITLB |
>  					((PERF_COUNT_HW_CACHE_OP_READ) << 8) |
>  					 ((PERF_COUNT_HW_CACHE_RESULT_MISS) << 16))) {
> -		if (runtime_itlb_cache_stats[ctx][cpu].n != 0)
> -			print_itlb_cache_misses(cpu, evsel, avg, out);
> +
> +		if (runtime_stat_n(stat, STAT_ITLB_CACHE, ctx, cpu) != 0)
> +			print_itlb_cache_misses(cpu, evsel, avg, out, stat);
>  		else
>  			print_metric(ctxp, NULL, NULL, "of all iTLB cache hits", 0);
>  	} else if (
> @@ -800,27 +880,28 @@ void perf_stat__print_shadow_stats(struct perf_evsel *evsel,
>  		evsel->attr.config ==  ( PERF_COUNT_HW_CACHE_LL |
>  					((PERF_COUNT_HW_CACHE_OP_READ) << 8) |
>  					 ((PERF_COUNT_HW_CACHE_RESULT_MISS) << 16))) {
> -		if (runtime_ll_cache_stats[ctx][cpu].n != 0)
> -			print_ll_cache_misses(cpu, evsel, avg, out);
> +
> +		if (runtime_stat_n(stat, STAT_LL_CACHE, ctx, cpu) != 0)
> +			print_ll_cache_misses(cpu, evsel, avg, out, stat);
>  		else
>  			print_metric(ctxp, NULL, NULL, "of all LL-cache hits", 0);
>  	} else if (perf_evsel__match(evsel, HARDWARE, HW_CACHE_MISSES)) {
> -		total = avg_stats(&runtime_cacherefs_stats[ctx][cpu]);
> +		total = runtime_stat_avg(stat, STAT_CACHEREFS, ctx, cpu);
>  
>  		if (total)
>  			ratio = avg * 100 / total;
>  
> -		if (runtime_cacherefs_stats[ctx][cpu].n != 0)
> +		if (runtime_stat_n(stat, STAT_CACHEREFS, ctx, cpu) != 0)
>  			print_metric(ctxp, NULL, "%8.3f %%",
>  				     "of all cache refs", ratio);
>  		else
>  			print_metric(ctxp, NULL, NULL, "of all cache refs", 0);
>  	} else if (perf_evsel__match(evsel, HARDWARE, HW_STALLED_CYCLES_FRONTEND)) {
> -		print_stalled_cycles_frontend(cpu, evsel, avg, out);
> +		print_stalled_cycles_frontend(cpu, evsel, avg, out, stat);
>  	} else if (perf_evsel__match(evsel, HARDWARE, HW_STALLED_CYCLES_BACKEND)) {
> -		print_stalled_cycles_backend(cpu, evsel, avg, out);
> +		print_stalled_cycles_backend(cpu, evsel, avg, out, stat);
>  	} else if (perf_evsel__match(evsel, HARDWARE, HW_CPU_CYCLES)) {
> -		total = avg_stats(&runtime_nsecs_stats[cpu]);
> +		total = runtime_stat_avg(stat, STAT_NSECS, 0, cpu);
>  
>  		if (total) {
>  			ratio = avg / total;
> @@ -829,7 +910,8 @@ void perf_stat__print_shadow_stats(struct perf_evsel *evsel,
>  			print_metric(ctxp, NULL, NULL, "Ghz", 0);
>  		}
>  	} else if (perf_stat_evsel__is(evsel, CYCLES_IN_TX)) {
> -		total = avg_stats(&runtime_cycles_stats[ctx][cpu]);
> +		total = runtime_stat_avg(stat, STAT_CYCLES, ctx, cpu);
> +
>  		if (total)
>  			print_metric(ctxp, NULL,
>  					"%7.2f%%", "transactional cycles",
> @@ -838,8 +920,9 @@ void perf_stat__print_shadow_stats(struct perf_evsel *evsel,
>  			print_metric(ctxp, NULL, NULL, "transactional cycles",
>  				     0);
>  	} else if (perf_stat_evsel__is(evsel, CYCLES_IN_TX_CP)) {
> -		total = avg_stats(&runtime_cycles_stats[ctx][cpu]);
> -		total2 = avg_stats(&runtime_cycles_in_tx_stats[ctx][cpu]);
> +		total = runtime_stat_avg(stat, STAT_CYCLES, ctx, cpu);
> +		total2 = runtime_stat_avg(stat, STAT_CYCLES_IN_TX, ctx, cpu);
> +
>  		if (total2 < avg)
>  			total2 = avg;
>  		if (total)
> @@ -848,19 +931,21 @@ void perf_stat__print_shadow_stats(struct perf_evsel *evsel,
>  		else
>  			print_metric(ctxp, NULL, NULL, "aborted cycles", 0);
>  	} else if (perf_stat_evsel__is(evsel, TRANSACTION_START)) {
> -		total = avg_stats(&runtime_cycles_in_tx_stats[ctx][cpu]);
> +		total = runtime_stat_avg(stat, STAT_CYCLES_IN_TX,
> +					 ctx, cpu);
>  
>  		if (avg)
>  			ratio = total / avg;
>  
> -		if (runtime_cycles_in_tx_stats[ctx][cpu].n != 0)
> +		if (runtime_stat_n(stat, STAT_CYCLES_IN_TX, ctx, cpu) != 0)
>  			print_metric(ctxp, NULL, "%8.0f",
>  				     "cycles / transaction", ratio);
>  		else
>  			print_metric(ctxp, NULL, NULL, "cycles / transaction",
> -				     0);
> +				      0);
>  	} else if (perf_stat_evsel__is(evsel, ELISION_START)) {
> -		total = avg_stats(&runtime_cycles_in_tx_stats[ctx][cpu]);
> +		total = runtime_stat_avg(stat, STAT_CYCLES_IN_TX,
> +					 ctx, cpu);
>  
>  		if (avg)
>  			ratio = total / avg;
> @@ -874,28 +959,28 @@ void perf_stat__print_shadow_stats(struct perf_evsel *evsel,
>  		else
>  			print_metric(ctxp, NULL, NULL, "CPUs utilized", 0);
>  	} else if (perf_stat_evsel__is(evsel, TOPDOWN_FETCH_BUBBLES)) {
> -		double fe_bound = td_fe_bound(ctx, cpu);
> +		double fe_bound = td_fe_bound(ctx, cpu, stat);
>  
>  		if (fe_bound > 0.2)
>  			color = PERF_COLOR_RED;
>  		print_metric(ctxp, color, "%8.1f%%", "frontend bound",
>  				fe_bound * 100.);
>  	} else if (perf_stat_evsel__is(evsel, TOPDOWN_SLOTS_RETIRED)) {
> -		double retiring = td_retiring(ctx, cpu);
> +		double retiring = td_retiring(ctx, cpu, stat);
>  
>  		if (retiring > 0.7)
>  			color = PERF_COLOR_GREEN;
>  		print_metric(ctxp, color, "%8.1f%%", "retiring",
>  				retiring * 100.);
>  	} else if (perf_stat_evsel__is(evsel, TOPDOWN_RECOVERY_BUBBLES)) {
> -		double bad_spec = td_bad_spec(ctx, cpu);
> +		double bad_spec = td_bad_spec(ctx, cpu, stat);
>  
>  		if (bad_spec > 0.1)
>  			color = PERF_COLOR_RED;
>  		print_metric(ctxp, color, "%8.1f%%", "bad speculation",
>  				bad_spec * 100.);
>  	} else if (perf_stat_evsel__is(evsel, TOPDOWN_SLOTS_ISSUED)) {
> -		double be_bound = td_be_bound(ctx, cpu);
> +		double be_bound = td_be_bound(ctx, cpu, stat);
>  		const char *name = "backend bound";
>  		static int have_recovery_bubbles = -1;
>  
> @@ -908,19 +993,19 @@ void perf_stat__print_shadow_stats(struct perf_evsel *evsel,
>  
>  		if (be_bound > 0.2)
>  			color = PERF_COLOR_RED;
> -		if (td_total_slots(ctx, cpu) > 0)
> +		if (td_total_slots(ctx, cpu, stat) > 0)
>  			print_metric(ctxp, color, "%8.1f%%", name,
>  					be_bound * 100.);
>  		else
>  			print_metric(ctxp, NULL, NULL, name, 0);
>  	} else if (evsel->metric_expr) {
>  		generic_metric(evsel->metric_expr, evsel->metric_events, evsel->name,
> -				evsel->metric_name, avg, cpu, out);
> -	} else if (runtime_nsecs_stats[cpu].n != 0) {
> +				evsel->metric_name, avg, cpu, out, stat);
> +	} else if (runtime_stat_n(stat, STAT_NSECS, 0, cpu) != 0) {
>  		char unit = 'M';
>  		char unit_buf[10];
>  
> -		total = avg_stats(&runtime_nsecs_stats[cpu]);
> +		total = runtime_stat_avg(stat, STAT_NSECS, 0, cpu);
>  
>  		if (total)
>  			ratio = 1000.0 * avg / total;
> @@ -931,7 +1016,7 @@ void perf_stat__print_shadow_stats(struct perf_evsel *evsel,
>  		snprintf(unit_buf, sizeof(unit_buf), "%c/sec", unit);
>  		print_metric(ctxp, NULL, "%8.3f", unit_buf, ratio);
>  	} else if (perf_stat_evsel__is(evsel, SMI_NUM)) {
> -		print_smi_cost(cpu, evsel, out);
> +		print_smi_cost(cpu, evsel, out, stat);
>  	} else {
>  		num = 0;
>  	}
> @@ -944,7 +1029,7 @@ void perf_stat__print_shadow_stats(struct perf_evsel *evsel,
>  				out->new_line(ctxp);
>  			generic_metric(mexp->metric_expr, mexp->metric_events,
>  					evsel->name, mexp->metric_name,
> -					avg, cpu, out);
> +					avg, cpu, out, stat);
>  		}
>  	}
>  	if (num == 0)
> diff --git a/tools/perf/util/stat.c b/tools/perf/util/stat.c
> index 151e9ef..78abfd4 100644
> --- a/tools/perf/util/stat.c
> +++ b/tools/perf/util/stat.c
> @@ -278,9 +278,11 @@ process_counter_values(struct perf_stat_config *config, struct perf_evsel *evsel
>  			perf_evsel__compute_deltas(evsel, cpu, thread, count);
>  		perf_counts_values__scale(count, config->scale, NULL);
>  		if (config->aggr_mode == AGGR_NONE)
> -			perf_stat__update_shadow_stats(evsel, count->val, cpu);
> +			perf_stat__update_shadow_stats(evsel, count->val, cpu,
> +						       &rt_stat);
>  		if (config->aggr_mode == AGGR_THREAD)
> -			perf_stat__update_shadow_stats(evsel, count->val, 0);
> +			perf_stat__update_shadow_stats(evsel, count->val, 0,
> +						       &rt_stat);
>  		break;
>  	case AGGR_GLOBAL:
>  		aggr->val += count->val;
> @@ -362,7 +364,7 @@ int perf_stat_process_counter(struct perf_stat_config *config,
>  	/*
>  	 * Save the full runtime - to allow normalization during printout:
>  	 */
> -	perf_stat__update_shadow_stats(counter, *count, 0);
> +	perf_stat__update_shadow_stats(counter, *count, 0, &rt_stat);
>  
>  	return 0;
>  }
> diff --git a/tools/perf/util/stat.h b/tools/perf/util/stat.h
> index 1e2b761..b8448b1 100644
> --- a/tools/perf/util/stat.h
> +++ b/tools/perf/util/stat.h
> @@ -130,7 +130,7 @@ void runtime_stat__exit(struct runtime_stat *stat);
>  void perf_stat__init_shadow_stats(void);
>  void perf_stat__reset_shadow_stats(void);
>  void perf_stat__update_shadow_stats(struct perf_evsel *counter, u64 count,
> -				    int cpu);
> +				    int cpu, struct runtime_stat *stat);
>  struct perf_stat_output_ctx {
>  	void *ctx;
>  	print_metric_t print_metric;
> @@ -141,7 +141,8 @@ struct perf_stat_output_ctx {
>  void perf_stat__print_shadow_stats(struct perf_evsel *evsel,
>  				   double avg, int cpu,
>  				   struct perf_stat_output_ctx *out,
> -				   struct rblist *metric_events);
> +				   struct rblist *metric_events,
> +				   struct runtime_stat *stat);
>  void perf_stat__collect_metric_expr(struct perf_evlist *);
>  
>  int perf_evlist__alloc_stats(struct perf_evlist *evlist, bool alloc_raw);
> -- 
> 2.7.4

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