Commit 0a57b910 authored by Ian Rogers's avatar Ian Rogers Committed by Arnaldo Carvalho de Melo
Browse files

perf stat: Use counts rather than saved_value 



Switch the hard coded metrics to use the aggregate value rather than
from saved_value. When computing a metric like IPC the aggregate count
comes from instructions then cycles is looked up and if present IPC
computed. Rather than lookup from the saved_value rbtree, search the
counter's evlist for the desired counter.

A new helper evsel__stat_type is used to both quickly find a metric
function and to identify when a counter is the one being sought. So
that both total and miss counts can be sought, the stat_type enum is
expanded. The ratio functions are rewritten to share a common helper
with the ratios being directly passed rather than computed from an
enum value.

Signed-off-by: default avatarIan Rogers <irogers@google.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Alexandre Torgue <alexandre.torgue@foss.st.com>
Cc: Andrii Nakryiko <andrii@kernel.org>
Cc: Athira Rajeev <atrajeev@linux.vnet.ibm.com>
Cc: Caleb Biggers <caleb.biggers@intel.com>
Cc: Eduard Zingerman <eddyz87@gmail.com>
Cc: Florian Fischer <florian.fischer@muhq.space>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: James Clark <james.clark@arm.com>
Cc: Jing Zhang <renyu.zj@linux.alibaba.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: John Garry <john.g.garry@oracle.com>
Cc: Kajol Jain <kjain@linux.ibm.com>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Leo Yan <leo.yan@linaro.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Maxime Coquelin <mcoquelin.stm32@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Perry Taylor <perry.taylor@intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Ravi Bangoria <ravi.bangoria@amd.com>
Cc: Sandipan Das <sandipan.das@amd.com>
Cc: Sean Christopherson <seanjc@google.com>
Cc: Stephane Eranian <eranian@google.com>
Cc: Suzuki Poulouse <suzuki.poulose@arm.com>
Cc: Xing Zhengjun <zhengjun.xing@linux.intel.com>
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-stm32@st-md-mailman.stormreply.com
Link: https://lore.kernel.org/r/20230219092848.639226-51-irogers@google.com


Signed-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
parent 37cc8ad7

tools/perf/util/evsel.h

+1 −1
Original line number Diff line number Diff line
@@ -436,7 +436,7 @@ static inline bool evsel__is_bpf_output(struct evsel *evsel) 
	return evsel__match(evsel, SOFTWARE, SW_BPF_OUTPUT);

}



static inline bool evsel__is_clock(struct evsel *evsel)

static inline bool evsel__is_clock(const struct evsel *evsel)

{

	return evsel__match(evsel, SOFTWARE, SW_CPU_CLOCK) ||

	       evsel__match(evsel, SOFTWARE, SW_TASK_CLOCK);

tools/perf/util/stat-shadow.c

+269 −265
Original line number Diff line number Diff line
@@ -45,15 +45,23 @@ enum stat_type { 
	STAT_NONE = 0,

	STAT_NSECS,

	STAT_CYCLES,

	STAT_INSTRUCTIONS,

	STAT_STALLED_CYCLES_FRONT,

	STAT_STALLED_CYCLES_BACK,

	STAT_BRANCHES,

	STAT_CACHEREFS,

	STAT_BRANCH_MISS,

	STAT_CACHE_REFS,

	STAT_CACHE_MISSES,

	STAT_L1_DCACHE,

	STAT_L1_ICACHE,

	STAT_LL_CACHE,

	STAT_ITLB_CACHE,

	STAT_DTLB_CACHE,

	STAT_L1D_MISS,

	STAT_L1I_MISS,

	STAT_LL_MISS,

	STAT_DTLB_MISS,

	STAT_ITLB_MISS,

	STAT_MAX

};
@@ -168,7 +176,7 @@ void perf_stat__init_shadow_stats(void) 
	rblist->node_delete = saved_value_delete;

}



static int evsel_context(struct evsel *evsel)

static int evsel_context(const struct evsel *evsel)

{

	int ctx = 0;
@@ -253,7 +261,7 @@ void perf_stat__update_shadow_stats(struct evsel *counter, u64 count, 
	else if (evsel__match(counter, HARDWARE, HW_BRANCH_INSTRUCTIONS))

		update_runtime_stat(STAT_BRANCHES, aggr_idx, count, &rsd);

	else if (evsel__match(counter, HARDWARE, HW_CACHE_REFERENCES))

		update_runtime_stat(STAT_CACHEREFS, aggr_idx, count, &rsd);

		update_runtime_stat(STAT_CACHE_REFS, aggr_idx, count, &rsd);

	else if (evsel__match(counter, HW_CACHE, HW_CACHE_L1D))

		update_runtime_stat(STAT_L1_DCACHE, aggr_idx, count, &rsd);

	else if (evsel__match(counter, HW_CACHE, HW_CACHE_L1I))
@@ -266,199 +274,283 @@ void perf_stat__update_shadow_stats(struct evsel *counter, u64 count, 
		update_runtime_stat(STAT_ITLB_CACHE, aggr_idx, count, &rsd);

}



/* used for get_ratio_color() */

enum grc_type {

	GRC_STALLED_CYCLES_FE,

	GRC_STALLED_CYCLES_BE,

	GRC_CACHE_MISSES,

	GRC_MAX_NR

};



static const char *get_ratio_color(enum grc_type type, double ratio)

static enum stat_type evsel__stat_type(const struct evsel *evsel)

{

	/* Fake perf_hw_cache_op_id values for use with evsel__match. */

	u64 PERF_COUNT_hw_cache_l1d_miss = PERF_COUNT_HW_CACHE_L1D |

		((PERF_COUNT_HW_CACHE_OP_READ) << 8) |

		((PERF_COUNT_HW_CACHE_RESULT_MISS) << 16);

	u64 PERF_COUNT_hw_cache_l1i_miss = PERF_COUNT_HW_CACHE_L1I |

		((PERF_COUNT_HW_CACHE_OP_READ) << 8) |

		((PERF_COUNT_HW_CACHE_RESULT_MISS) << 16);

	u64 PERF_COUNT_hw_cache_ll_miss = PERF_COUNT_HW_CACHE_LL |

		((PERF_COUNT_HW_CACHE_OP_READ) << 8) |

		((PERF_COUNT_HW_CACHE_RESULT_MISS) << 16);

	u64 PERF_COUNT_hw_cache_dtlb_miss = PERF_COUNT_HW_CACHE_DTLB |

		((PERF_COUNT_HW_CACHE_OP_READ) << 8) |

		((PERF_COUNT_HW_CACHE_RESULT_MISS) << 16);

	u64 PERF_COUNT_hw_cache_itlb_miss = PERF_COUNT_HW_CACHE_ITLB |

		((PERF_COUNT_HW_CACHE_OP_READ) << 8) |

		((PERF_COUNT_HW_CACHE_RESULT_MISS) << 16);



	if (evsel__is_clock(evsel))

		return STAT_NSECS;

	else if (evsel__match(evsel, HARDWARE, HW_CPU_CYCLES))

		return STAT_CYCLES;

	else if (evsel__match(evsel, HARDWARE, HW_INSTRUCTIONS))

		return STAT_INSTRUCTIONS;

	else if (evsel__match(evsel, HARDWARE, HW_STALLED_CYCLES_FRONTEND))

		return STAT_STALLED_CYCLES_FRONT;

	else if (evsel__match(evsel, HARDWARE, HW_STALLED_CYCLES_BACKEND))

		return STAT_STALLED_CYCLES_BACK;

	else if (evsel__match(evsel, HARDWARE, HW_BRANCH_INSTRUCTIONS))

		return STAT_BRANCHES;

	else if (evsel__match(evsel, HARDWARE, HW_BRANCH_MISSES))

		return STAT_BRANCH_MISS;

	else if (evsel__match(evsel, HARDWARE, HW_CACHE_REFERENCES))

		return STAT_CACHE_REFS;

	else if (evsel__match(evsel, HARDWARE, HW_CACHE_MISSES))

		return STAT_CACHE_MISSES;

	else if (evsel__match(evsel, HW_CACHE, HW_CACHE_L1D))

		return STAT_L1_DCACHE;

	else if (evsel__match(evsel, HW_CACHE, HW_CACHE_L1I))

		return STAT_L1_ICACHE;

	else if (evsel__match(evsel, HW_CACHE, HW_CACHE_LL))

		return STAT_LL_CACHE;

	else if (evsel__match(evsel, HW_CACHE, HW_CACHE_DTLB))

		return STAT_DTLB_CACHE;

	else if (evsel__match(evsel, HW_CACHE, HW_CACHE_ITLB))

		return STAT_ITLB_CACHE;

	else if (evsel__match(evsel, HW_CACHE, hw_cache_l1d_miss))

		return STAT_L1D_MISS;

	else if (evsel__match(evsel, HW_CACHE, hw_cache_l1i_miss))

		return STAT_L1I_MISS;

	else if (evsel__match(evsel, HW_CACHE, hw_cache_ll_miss))

		return STAT_LL_MISS;

	else if (evsel__match(evsel, HW_CACHE, hw_cache_dtlb_miss))

		return STAT_DTLB_MISS;

	else if (evsel__match(evsel, HW_CACHE, hw_cache_itlb_miss))

		return STAT_ITLB_MISS;

	return STAT_NONE;

}



static const char *get_ratio_color(const double ratios[3], double val)

{

	static const double grc_table[GRC_MAX_NR][3] = {

		[GRC_STALLED_CYCLES_FE] = { 50.0, 30.0, 10.0 },

		[GRC_STALLED_CYCLES_BE] = { 75.0, 50.0, 20.0 },

		[GRC_CACHE_MISSES] 	= { 20.0, 10.0, 5.0 },

	};

	const char *color = PERF_COLOR_NORMAL;



	if (ratio > grc_table[type][0])

	if (val > ratios[0])

		color = PERF_COLOR_RED;

	else if (ratio > grc_table[type][1])

	else if (val > ratios[1])

		color = PERF_COLOR_MAGENTA;

	else if (ratio > grc_table[type][2])

	else if (val > ratios[2])

		color = PERF_COLOR_YELLOW;



	return color;

}



static double runtime_stat_avg(enum stat_type type, int aggr_idx,

			       struct runtime_stat_data *rsd)

static double find_stat(const struct evsel *evsel, int aggr_idx, enum stat_type type)

{

	struct saved_value *v;



	v = saved_value_lookup(NULL, aggr_idx, false, type, rsd->ctx, rsd->cgrp);

	if (!v)

	const struct evsel *cur;

	int evsel_ctx = evsel_context(evsel);



	evlist__for_each_entry(evsel->evlist, cur) {

		struct perf_stat_aggr *aggr;



		/* Ignore the evsel that is being searched from. */

		if (evsel == cur)

			continue;



		/* Ignore evsels that are part of different groups. */

		if (evsel->core.leader->nr_members &&

		    evsel->core.leader != cur->core.leader)

			continue;

		/* Ignore evsels with mismatched modifiers. */

		if (evsel_ctx != evsel_context(cur))

			continue;

		/* Ignore if not the cgroup we're looking for. */

		if (evsel->cgrp != cur->cgrp)

			continue;

		/* Ignore if not the stat we're looking for. */

		if (type != evsel__stat_type(cur))

			continue;



		aggr = &cur->stats->aggr[aggr_idx];

		if (type == STAT_NSECS)

			return aggr->counts.val;

		return aggr->counts.val * cur->scale;

	}

	return 0.0;



	return avg_stats(&v->stats);

}



static double runtime_stat_n(enum stat_type type, int aggr_idx,

			     struct runtime_stat_data *rsd)

static void print_ratio(struct perf_stat_config *config,

			const struct evsel *evsel, int aggr_idx,

			double numerator, struct perf_stat_output_ctx *out,

			enum stat_type denominator_type,

			const double color_ratios[3], const char *unit)

{

	struct saved_value *v;

	double denominator = find_stat(evsel, aggr_idx, denominator_type);



	v = saved_value_lookup(NULL, aggr_idx, false, type, rsd->ctx, rsd->cgrp);

	if (!v)

		return 0.0;

	if (numerator && denominator) {

		double ratio = numerator / denominator * 100.0;

		const char *color = get_ratio_color(color_ratios, ratio);



	return v->stats.n;

		out->print_metric(config, out->ctx, color, "%7.2f%%", unit, ratio);

	} else

		out->print_metric(config, out->ctx, NULL, NULL, unit, 0);

}



static void print_stalled_cycles_frontend(struct perf_stat_config *config,

					  int aggr_idx, double avg,

					  struct perf_stat_output_ctx *out,

					  struct runtime_stat_data *rsd)

static void print_stalled_cycles_front(struct perf_stat_config *config,

				const struct evsel *evsel,

				int aggr_idx, double stalled,

				struct perf_stat_output_ctx *out)

{

	double total, ratio = 0.0;

	const char *color;



	total = runtime_stat_avg(STAT_CYCLES, aggr_idx, rsd);

	static const double color_ratios[3] = {50.0, 30.0, 10.0};



	if (total)

		ratio = avg / total * 100.0;



	color = get_ratio_color(GRC_STALLED_CYCLES_FE, ratio);



	if (ratio)

		out->print_metric(config, out->ctx, color, "%7.2f%%", "frontend cycles idle",

				  ratio);

	else

		out->print_metric(config, out->ctx, NULL, NULL, "frontend cycles idle", 0);

	print_ratio(config, evsel, aggr_idx, stalled, out, STAT_CYCLES, color_ratios,

		    "frontend cycles idle");

}



static void print_stalled_cycles_backend(struct perf_stat_config *config,

					 int aggr_idx, double avg,

					 struct perf_stat_output_ctx *out,

					 struct runtime_stat_data *rsd)

static void print_stalled_cycles_back(struct perf_stat_config *config,

				const struct evsel *evsel,

				int aggr_idx, double stalled,

				struct perf_stat_output_ctx *out)

{

	double total, ratio = 0.0;

	const char *color;

	static const double color_ratios[3] = {75.0, 50.0, 20.0};



	total = runtime_stat_avg(STAT_CYCLES, aggr_idx, rsd);



	if (total)

		ratio = avg / total * 100.0;



	color = get_ratio_color(GRC_STALLED_CYCLES_BE, ratio);



	out->print_metric(config, out->ctx, color, "%7.2f%%", "backend cycles idle", ratio);

	print_ratio(config, evsel, aggr_idx, stalled, out, STAT_CYCLES, color_ratios,

		    "backend cycles idle");

}



static void print_branch_misses(struct perf_stat_config *config,

				int aggr_idx, double avg,

				struct perf_stat_output_ctx *out,

				struct runtime_stat_data *rsd)

static void print_branch_miss(struct perf_stat_config *config,

			const struct evsel *evsel,

			int aggr_idx, double misses,

			struct perf_stat_output_ctx *out)

{

	double total, ratio = 0.0;

	const char *color;

	static const double color_ratios[3] = {20.0, 10.0, 5.0};



	total = runtime_stat_avg(STAT_BRANCHES, aggr_idx, rsd);



	if (total)

		ratio = avg / total * 100.0;

	print_ratio(config, evsel, aggr_idx, misses, out, STAT_BRANCHES, color_ratios,

		    "of all branches");

}



	color = get_ratio_color(GRC_CACHE_MISSES, ratio);

static void print_l1d_miss(struct perf_stat_config *config,

			const struct evsel *evsel,

			int aggr_idx, double misses,

			struct perf_stat_output_ctx *out)

{

	static const double color_ratios[3] = {20.0, 10.0, 5.0};



	out->print_metric(config, out->ctx, color, "%7.2f%%", "of all branches", ratio);

	print_ratio(config, evsel, aggr_idx, misses, out, STAT_L1_DCACHE, color_ratios,

		    "of all L1-dcache accesses");

}



static void print_l1_dcache_misses(struct perf_stat_config *config,

				   int aggr_idx, double avg,

				   struct perf_stat_output_ctx *out,

				   struct runtime_stat_data *rsd)

static void print_l1i_miss(struct perf_stat_config *config,

			const struct evsel *evsel,

			int aggr_idx, double misses,

			struct perf_stat_output_ctx *out)

{

	double total, ratio = 0.0;

	const char *color;



	total = runtime_stat_avg(STAT_L1_DCACHE, aggr_idx, rsd);

	static const double color_ratios[3] = {20.0, 10.0, 5.0};



	if (total)

		ratio = avg / total * 100.0;

	print_ratio(config, evsel, aggr_idx, misses, out, STAT_L1_ICACHE, color_ratios,

		    "of all L1-icache accesses");

}



	color = get_ratio_color(GRC_CACHE_MISSES, ratio);

static void print_ll_miss(struct perf_stat_config *config,

			const struct evsel *evsel,

			int aggr_idx, double misses,

			struct perf_stat_output_ctx *out)

{

	static const double color_ratios[3] = {20.0, 10.0, 5.0};



	out->print_metric(config, out->ctx, color, "%7.2f%%", "of all L1-dcache accesses", ratio);

	print_ratio(config, evsel, aggr_idx, misses, out, STAT_LL_CACHE, color_ratios,

		    "of all L1-icache accesses");

}



static void print_l1_icache_misses(struct perf_stat_config *config,

				   int aggr_idx, double avg,

				   struct perf_stat_output_ctx *out,

				   struct runtime_stat_data *rsd)

static void print_dtlb_miss(struct perf_stat_config *config,

			const struct evsel *evsel,

			int aggr_idx, double misses,

			struct perf_stat_output_ctx *out)

{

	double total, ratio = 0.0;

	const char *color;

	static const double color_ratios[3] = {20.0, 10.0, 5.0};



	total = runtime_stat_avg(STAT_L1_ICACHE, aggr_idx, rsd);

	print_ratio(config, evsel, aggr_idx, misses, out, STAT_DTLB_CACHE, color_ratios,

		    "of all dTLB cache accesses");

}



	if (total)

		ratio = avg / total * 100.0;

static void print_itlb_miss(struct perf_stat_config *config,

			const struct evsel *evsel,

			int aggr_idx, double misses,

			struct perf_stat_output_ctx *out)

{

	static const double color_ratios[3] = {20.0, 10.0, 5.0};



	color = get_ratio_color(GRC_CACHE_MISSES, ratio);

	out->print_metric(config, out->ctx, color, "%7.2f%%", "of all L1-icache accesses", ratio);

	print_ratio(config, evsel, aggr_idx, misses, out, STAT_ITLB_CACHE, color_ratios,

		    "of all iTLB cache accesses");

}



static void print_dtlb_cache_misses(struct perf_stat_config *config,

				    int aggr_idx, double avg,

				    struct perf_stat_output_ctx *out,

				    struct runtime_stat_data *rsd)

static void print_cache_miss(struct perf_stat_config *config,

			const struct evsel *evsel,

			int aggr_idx, double misses,

			struct perf_stat_output_ctx *out)

{

	double total, ratio = 0.0;

	const char *color;

	static const double color_ratios[3] = {20.0, 10.0, 5.0};



	total = runtime_stat_avg(STAT_DTLB_CACHE, aggr_idx, rsd);

	print_ratio(config, evsel, aggr_idx, misses, out, STAT_CACHE_REFS, color_ratios,

		    "of all cache refs");

}



	if (total)

		ratio = avg / total * 100.0;

static void print_instructions(struct perf_stat_config *config,

			const struct evsel *evsel,

			int aggr_idx, double instructions,

			struct perf_stat_output_ctx *out)

{

	print_metric_t print_metric = out->print_metric;

	void *ctxp = out->ctx;

	double cycles = find_stat(evsel, aggr_idx, STAT_CYCLES);

	double max_stalled = max(find_stat(evsel, aggr_idx, STAT_STALLED_CYCLES_FRONT),

				find_stat(evsel, aggr_idx, STAT_STALLED_CYCLES_BACK));



	if (cycles) {

		print_metric(config, ctxp, NULL, "%7.2f ", "insn per cycle",

			instructions / cycles);

	} else

		print_metric(config, ctxp, NULL, NULL, "insn per cycle", 0);



	color = get_ratio_color(GRC_CACHE_MISSES, ratio);

	out->print_metric(config, out->ctx, color, "%7.2f%%", "of all dTLB cache accesses", ratio);

	if (max_stalled && instructions) {

		out->new_line(config, ctxp);

		print_metric(config, ctxp, NULL, "%7.2f ", "stalled cycles per insn",

			max_stalled / instructions);

	}

}



static void print_itlb_cache_misses(struct perf_stat_config *config,

				    int aggr_idx, double avg,

				    struct perf_stat_output_ctx *out,

				    struct runtime_stat_data *rsd)

static void print_cycles(struct perf_stat_config *config,

			const struct evsel *evsel,

			int aggr_idx, double cycles,

			struct perf_stat_output_ctx *out)

{

	double total, ratio = 0.0;

	const char *color;

	double nsecs = find_stat(evsel, aggr_idx, STAT_NSECS);



	total = runtime_stat_avg(STAT_ITLB_CACHE, aggr_idx, rsd);

	if (cycles && nsecs) {

		double ratio = cycles / nsecs;



	if (total)

		ratio = avg / total * 100.0;



	color = get_ratio_color(GRC_CACHE_MISSES, ratio);

	out->print_metric(config, out->ctx, color, "%7.2f%%", "of all iTLB cache accesses", ratio);

		out->print_metric(config, out->ctx, NULL, "%8.3f", "GHz", ratio);

	} else

		out->print_metric(config, out->ctx, NULL, NULL, "GHz", 0);

}



static void print_ll_cache_misses(struct perf_stat_config *config,

				  int aggr_idx, double avg,

				  struct perf_stat_output_ctx *out,

				  struct runtime_stat_data *rsd)

static void print_nsecs(struct perf_stat_config *config,

			const struct evsel *evsel,

			int aggr_idx __maybe_unused, double nsecs,

			struct perf_stat_output_ctx *out)

{

	double total, ratio = 0.0;

	const char *color;



	total = runtime_stat_avg(STAT_LL_CACHE, aggr_idx, rsd);



	if (total)

		ratio = avg / total * 100.0;

	print_metric_t print_metric = out->print_metric;

	void *ctxp = out->ctx;

	double wall_time = avg_stats(&walltime_nsecs_stats);



	color = get_ratio_color(GRC_CACHE_MISSES, ratio);

	out->print_metric(config, out->ctx, color, "%7.2f%%", "of all LL-cache accesses", ratio);

	if (wall_time) {

		print_metric(config, ctxp, NULL, "%8.3f", "CPUs utilized",

			nsecs / (wall_time * evsel->scale));

	} else

		print_metric(config, ctxp, NULL, NULL, "CPUs utilized", 0);

}



static int prepare_metric(struct evsel **metric_events,
@@ -638,140 +730,52 @@ void perf_stat__print_shadow_stats(struct perf_stat_config *config, 
				   struct perf_stat_output_ctx *out,

				   struct rblist *metric_events)

{

	void *ctxp = out->ctx;

	print_metric_t print_metric = out->print_metric;

	double total, ratio = 0.0;

	struct runtime_stat_data rsd = {

		.ctx = evsel_context(evsel),

		.cgrp = evsel->cgrp,

	typedef void (*stat_print_function_t)(struct perf_stat_config *config,

					const struct evsel *evsel,

					int aggr_idx, double misses,

					struct perf_stat_output_ctx *out);

	static const stat_print_function_t stat_print_function[STAT_MAX] = {

		[STAT_INSTRUCTIONS] = print_instructions,

		[STAT_BRANCH_MISS] = print_branch_miss,

		[STAT_L1D_MISS] = print_l1d_miss,

		[STAT_L1I_MISS] = print_l1i_miss,

		[STAT_DTLB_MISS] = print_dtlb_miss,

		[STAT_ITLB_MISS] = print_itlb_miss,

		[STAT_LL_MISS] = print_ll_miss,

		[STAT_CACHE_MISSES] = print_cache_miss,

		[STAT_STALLED_CYCLES_FRONT] = print_stalled_cycles_front,

		[STAT_STALLED_CYCLES_BACK] = print_stalled_cycles_back,

		[STAT_CYCLES] = print_cycles,

		[STAT_NSECS] = print_nsecs,

	};

	print_metric_t print_metric = out->print_metric;

	void *ctxp = out->ctx;

	struct metric_event *me;

	int num = 1;



	if (config->iostat_run) {

		iostat_print_metric(config, evsel, out);

	} else if (evsel__match(evsel, HARDWARE, HW_INSTRUCTIONS)) {

		total = runtime_stat_avg(STAT_CYCLES, aggr_idx, &rsd);



		if (total) {

			ratio = avg / total;

			print_metric(config, ctxp, NULL, "%7.2f ",

					"insn per cycle", ratio);

	} else {

			print_metric(config, ctxp, NULL, NULL, "insn per cycle", 0);

		}

		stat_print_function_t fn = stat_print_function[evsel__stat_type(evsel)];



		total = runtime_stat_avg(STAT_STALLED_CYCLES_FRONT, aggr_idx, &rsd);

		if (fn)

			fn(config, evsel, aggr_idx, avg, out);

		else {

			double nsecs =	find_stat(evsel, aggr_idx, STAT_NSECS);



		total = max(total, runtime_stat_avg(STAT_STALLED_CYCLES_BACK,

						    aggr_idx, &rsd));



		if (total && avg) {

			out->new_line(config, ctxp);

			ratio = total / avg;

			print_metric(config, ctxp, NULL, "%7.2f ",

					"stalled cycles per insn",

					ratio);

		}

	} else if (evsel__match(evsel, HARDWARE, HW_BRANCH_MISSES)) {

		if (runtime_stat_n(STAT_BRANCHES, aggr_idx, &rsd) != 0)

			print_branch_misses(config, aggr_idx, avg, out, &rsd);

		else

			print_metric(config, ctxp, NULL, NULL, "of all branches", 0);

	} else if (

		evsel->core.attr.type == PERF_TYPE_HW_CACHE &&

		evsel->core.attr.config ==  ( PERF_COUNT_HW_CACHE_L1D |

					((PERF_COUNT_HW_CACHE_OP_READ) << 8) |

					 ((PERF_COUNT_HW_CACHE_RESULT_MISS) << 16))) {



		if (runtime_stat_n(STAT_L1_DCACHE, aggr_idx, &rsd) != 0)

			print_l1_dcache_misses(config, aggr_idx, avg, out, &rsd);

		else

			print_metric(config, ctxp, NULL, NULL, "of all L1-dcache accesses", 0);

	} else if (

		evsel->core.attr.type == PERF_TYPE_HW_CACHE &&

		evsel->core.attr.config ==  ( PERF_COUNT_HW_CACHE_L1I |

					((PERF_COUNT_HW_CACHE_OP_READ) << 8) |

					 ((PERF_COUNT_HW_CACHE_RESULT_MISS) << 16))) {



		if (runtime_stat_n(STAT_L1_ICACHE, aggr_idx, &rsd) != 0)

			print_l1_icache_misses(config, aggr_idx, avg, out, &rsd);

		else

			print_metric(config, ctxp, NULL, NULL, "of all L1-icache accesses", 0);

	} else if (

		evsel->core.attr.type == PERF_TYPE_HW_CACHE &&

		evsel->core.attr.config ==  ( PERF_COUNT_HW_CACHE_DTLB |

					((PERF_COUNT_HW_CACHE_OP_READ) << 8) |

					 ((PERF_COUNT_HW_CACHE_RESULT_MISS) << 16))) {



		if (runtime_stat_n(STAT_DTLB_CACHE, aggr_idx, &rsd) != 0)

			print_dtlb_cache_misses(config, aggr_idx, avg, out, &rsd);

		else

			print_metric(config, ctxp, NULL, NULL, "of all dTLB cache accesses", 0);

	} else if (

		evsel->core.attr.type == PERF_TYPE_HW_CACHE &&

		evsel->core.attr.config ==  ( PERF_COUNT_HW_CACHE_ITLB |

					((PERF_COUNT_HW_CACHE_OP_READ) << 8) |

					 ((PERF_COUNT_HW_CACHE_RESULT_MISS) << 16))) {



		if (runtime_stat_n(STAT_ITLB_CACHE, aggr_idx, &rsd) != 0)

			print_itlb_cache_misses(config, aggr_idx, avg, out, &rsd);

		else

			print_metric(config, ctxp, NULL, NULL, "of all iTLB cache accesses", 0);

	} else if (

		evsel->core.attr.type == PERF_TYPE_HW_CACHE &&

		evsel->core.attr.config ==  ( PERF_COUNT_HW_CACHE_LL |

					((PERF_COUNT_HW_CACHE_OP_READ) << 8) |

					 ((PERF_COUNT_HW_CACHE_RESULT_MISS) << 16))) {



		if (runtime_stat_n(STAT_LL_CACHE, aggr_idx, &rsd) != 0)

			print_ll_cache_misses(config, aggr_idx, avg, out, &rsd);

		else

			print_metric(config, ctxp, NULL, NULL, "of all LL-cache accesses", 0);

	} else if (evsel__match(evsel, HARDWARE, HW_CACHE_MISSES)) {

		total = runtime_stat_avg(STAT_CACHEREFS, aggr_idx, &rsd);



		if (total)

			ratio = avg * 100 / total;



		if (runtime_stat_n(STAT_CACHEREFS, aggr_idx, &rsd) != 0)

			print_metric(config, ctxp, NULL, "%8.3f %%",

				     "of all cache refs", ratio);

		else

			print_metric(config, ctxp, NULL, NULL, "of all cache refs", 0);

	} else if (evsel__match(evsel, HARDWARE, HW_STALLED_CYCLES_FRONTEND)) {

		print_stalled_cycles_frontend(config, aggr_idx, avg, out, &rsd);

	} else if (evsel__match(evsel, HARDWARE, HW_STALLED_CYCLES_BACKEND)) {

		print_stalled_cycles_backend(config, aggr_idx, avg, out, &rsd);

	} else if (evsel__match(evsel, HARDWARE, HW_CPU_CYCLES)) {

		total = runtime_stat_avg(STAT_NSECS, aggr_idx, &rsd);



		if (total) {

			ratio = avg / total;

			print_metric(config, ctxp, NULL, "%8.3f", "GHz", ratio);

		} else {

			print_metric(config, ctxp, NULL, NULL, "Ghz", 0);

		}

	} else if (evsel__is_clock(evsel)) {

		if ((ratio = avg_stats(&walltime_nsecs_stats)) != 0)

			print_metric(config, ctxp, NULL, "%8.3f", "CPUs utilized",

				     avg / (ratio * evsel->scale));

		else

			print_metric(config, ctxp, NULL, NULL, "CPUs utilized", 0);

	} else if (runtime_stat_n(STAT_NSECS, aggr_idx, &rsd) != 0) {

			if (nsecs) {

				char unit = ' ';

				char unit_buf[10] = "/sec";



		total = runtime_stat_avg(STAT_NSECS, aggr_idx, &rsd);

		if (total)

			ratio = convert_unit_double(1000000000.0 * avg / total, &unit);

				double ratio = convert_unit_double(1000000000.0 * avg / nsecs,

								   &unit);



				if (unit != ' ')

					snprintf(unit_buf, sizeof(unit_buf), "%c/sec", unit);

				print_metric(config, ctxp, NULL, "%8.3f", unit_buf, ratio);

	} else {

			} else

				num = 0;

		}

	}



	if ((me = metricgroup__lookup(metric_events, evsel, false)) != NULL) {

		struct metric_expr *mexp;