system/linux
system/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux synced 2024-10-23 03:37:40 +00:00
Code Issues Packages Projects Releases Wiki Activity
linux/tools/perf/util/stat-shadow.c
Andi Kleen 140aeadc1f perf stat: Abstract stat metrics printing 
Abstract the printing of shadow metrics. Instead of every metric calling
fprintf directly and taking care of indentation, use two call backs: one
to print metrics and another to start a new line.

This will allow adding metrics to CSV mode and also using them for other
purposes.

The computation of padding is now done in the central callback, instead
of every metric doing it manually.  This makes it easier to add new
metrics.

v2: Refactor functions, printout now does more. Move
shadow printing. Improve fallback callbacks. Don't
use void * callback data.
v3: Remove unnecessary hunk. Add typedef for new_line
v4: Remove unnecessary hunk. Don't print metrics for CSV/interval
mode yet.  Move printout change to separate patch.
v5: Fix bisect bugs. Avoid bogus frontend cycles printing.
Fix indentation in different aggregation modes.
v6: Delay newline handling

Signed-off-by: Andi Kleen <ak@linux.intel.com>
Acked-by: Jiri Olsa <jolsa@redhat.com>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/1454173616-17710-2-git-send-email-andi@firstfloor.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-02-16 17:13:00 -03:00

459 lines
15 KiB
C
Raw Blame History

#include <stdio.h>
#include "evsel.h"
#include "stat.h"
#include "color.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
static struct stats runtime_nsecs_stats[MAX_NR_CPUS];
static struct stats runtime_cycles_stats[NUM_CTX][MAX_NR_CPUS];
static struct stats runtime_stalled_cycles_front_stats[NUM_CTX][MAX_NR_CPUS];
static struct stats runtime_stalled_cycles_back_stats[NUM_CTX][MAX_NR_CPUS];
static struct stats runtime_branches_stats[NUM_CTX][MAX_NR_CPUS];
static struct stats runtime_cacherefs_stats[NUM_CTX][MAX_NR_CPUS];
static struct stats runtime_l1_dcache_stats[NUM_CTX][MAX_NR_CPUS];
static struct stats runtime_l1_icache_stats[NUM_CTX][MAX_NR_CPUS];
static struct stats runtime_ll_cache_stats[NUM_CTX][MAX_NR_CPUS];
static struct stats runtime_itlb_cache_stats[NUM_CTX][MAX_NR_CPUS];
static struct stats runtime_dtlb_cache_stats[NUM_CTX][MAX_NR_CPUS];
static struct stats runtime_cycles_in_tx_stats[NUM_CTX][MAX_NR_CPUS];
static struct stats runtime_transaction_stats[NUM_CTX][MAX_NR_CPUS];
static struct stats runtime_elision_stats[NUM_CTX][MAX_NR_CPUS];
struct stats walltime_nsecs_stats;
static int evsel_context(struct perf_evsel *evsel)
{
int ctx = 0;
if (evsel->attr.exclude_kernel)
ctx |= CTX_BIT_KERNEL;
if (evsel->attr.exclude_user)
ctx |= CTX_BIT_USER;
if (evsel->attr.exclude_hv)
ctx |= CTX_BIT_HV;
if (evsel->attr.exclude_host)
ctx |= CTX_BIT_HOST;
if (evsel->attr.exclude_idle)
ctx |= CTX_BIT_IDLE;
return ctx;
}
void perf_stat__reset_shadow_stats(void)
{
memset(runtime_nsecs_stats, 0, sizeof(runtime_nsecs_stats));
memset(runtime_cycles_stats, 0, sizeof(runtime_cycles_stats));
memset(runtime_stalled_cycles_front_stats, 0, sizeof(runtime_stalled_cycles_front_stats));
memset(runtime_stalled_cycles_back_stats, 0, sizeof(runtime_stalled_cycles_back_stats));
memset(runtime_branches_stats, 0, sizeof(runtime_branches_stats));
memset(runtime_cacherefs_stats, 0, sizeof(runtime_cacherefs_stats));
memset(runtime_l1_dcache_stats, 0, sizeof(runtime_l1_dcache_stats));
memset(runtime_l1_icache_stats, 0, sizeof(runtime_l1_icache_stats));
memset(runtime_ll_cache_stats, 0, sizeof(runtime_ll_cache_stats));
memset(runtime_itlb_cache_stats, 0, sizeof(runtime_itlb_cache_stats));
memset(runtime_dtlb_cache_stats, 0, sizeof(runtime_dtlb_cache_stats));
memset(runtime_cycles_in_tx_stats, 0,
sizeof(runtime_cycles_in_tx_stats));
memset(runtime_transaction_stats, 0,
sizeof(runtime_transaction_stats));
memset(runtime_elision_stats, 0, sizeof(runtime_elision_stats));
memset(&walltime_nsecs_stats, 0, sizeof(walltime_nsecs_stats));
}
/*
* 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 ctx = evsel_context(counter);
if (perf_evsel__match(counter, SOFTWARE, SW_TASK_CLOCK))
update_stats(&runtime_nsecs_stats[cpu], count[0]);
else if (perf_evsel__match(counter, HARDWARE, HW_CPU_CYCLES))
update_stats(&runtime_cycles_stats[ctx][cpu], count[0]);
else if (perf_stat_evsel__is(counter, CYCLES_IN_TX))
update_stats(&runtime_cycles_in_tx_stats[ctx][cpu], count[0]);
else if (perf_stat_evsel__is(counter, TRANSACTION_START))
update_stats(&runtime_transaction_stats[ctx][cpu], count[0]);
else if (perf_stat_evsel__is(counter, ELISION_START))
update_stats(&runtime_elision_stats[ctx][cpu], count[0]);
else if (perf_evsel__match(counter, HARDWARE, HW_STALLED_CYCLES_FRONTEND))
update_stats(&runtime_stalled_cycles_front_stats[ctx][cpu], count[0]);
else if (perf_evsel__match(counter, HARDWARE, HW_STALLED_CYCLES_BACKEND))
update_stats(&runtime_stalled_cycles_back_stats[ctx][cpu], count[0]);
else if (perf_evsel__match(counter, HARDWARE, HW_BRANCH_INSTRUCTIONS))
update_stats(&runtime_branches_stats[ctx][cpu], count[0]);
else if (perf_evsel__match(counter, HARDWARE, HW_CACHE_REFERENCES))
update_stats(&runtime_cacherefs_stats[ctx][cpu], count[0]);
else if (perf_evsel__match(counter, HW_CACHE, HW_CACHE_L1D))
update_stats(&runtime_l1_dcache_stats[ctx][cpu], count[0]);
else if (perf_evsel__match(counter, HW_CACHE, HW_CACHE_L1I))
update_stats(&runtime_ll_cache_stats[ctx][cpu], count[0]);
else if (perf_evsel__match(counter, HW_CACHE, HW_CACHE_LL))
update_stats(&runtime_ll_cache_stats[ctx][cpu], count[0]);
else if (perf_evsel__match(counter, HW_CACHE, HW_CACHE_DTLB))
update_stats(&runtime_dtlb_cache_stats[ctx][cpu], count[0]);
else if (perf_evsel__match(counter, HW_CACHE, HW_CACHE_ITLB))
update_stats(&runtime_itlb_cache_stats[ctx][cpu], count[0]);
}
/* 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 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])
color = PERF_COLOR_RED;
else if (ratio > grc_table[type][1])
color = PERF_COLOR_MAGENTA;
else if (ratio > grc_table[type][2])
color = PERF_COLOR_YELLOW;
return color;
}
static void print_stalled_cycles_frontend(int cpu,
struct perf_evsel *evsel
__maybe_unused, double avg,
struct perf_stat_output_ctx *out)
{
double total, ratio = 0.0;
const char *color;
int ctx = evsel_context(evsel);
total = avg_stats(&runtime_cycles_stats[ctx][cpu]);
if (total)
ratio = avg / total * 100.0;
color = get_ratio_color(GRC_STALLED_CYCLES_FE, ratio);
if (ratio)
out->print_metric(out->ctx, color, "%7.2f%%", "frontend cycles idle",
ratio);
else
out->print_metric(out->ctx, NULL, NULL, "frontend cycles idle", 0);
}
static void print_stalled_cycles_backend(int cpu,
struct perf_evsel *evsel
__maybe_unused, double avg,
struct perf_stat_output_ctx *out)
{
double total, ratio = 0.0;
const char *color;
int ctx = evsel_context(evsel);
total = avg_stats(&runtime_cycles_stats[ctx][cpu]);
if (total)
ratio = avg / total * 100.0;
color = get_ratio_color(GRC_STALLED_CYCLES_BE, ratio);
out->print_metric(out->ctx, color, "%6.2f%%", "backend cycles idle", ratio);
}
static void print_branch_misses(int cpu,
struct perf_evsel *evsel __maybe_unused,
double avg,
struct perf_stat_output_ctx *out)
{
double total, ratio = 0.0;
const char *color;
int ctx = evsel_context(evsel);
total = avg_stats(&runtime_branches_stats[ctx][cpu]);
if (total)
ratio = avg / total * 100.0;
color = get_ratio_color(GRC_CACHE_MISSES, ratio);
out->print_metric(out->ctx, color, "%7.2f%%", "of all branches", ratio);
}
static void print_l1_dcache_misses(int cpu,
struct perf_evsel *evsel __maybe_unused,
double avg,
struct perf_stat_output_ctx *out)
{
double total, ratio = 0.0;
const char *color;
int ctx = evsel_context(evsel);
total = avg_stats(&runtime_l1_dcache_stats[ctx][cpu]);
if (total)
ratio = avg / total * 100.0;
color = get_ratio_color(GRC_CACHE_MISSES, ratio);
out->print_metric(out->ctx, color, "%7.2f%%", "of all L1-dcache hits", ratio);
}
static void print_l1_icache_misses(int cpu,
struct perf_evsel *evsel __maybe_unused,
double avg,
struct perf_stat_output_ctx *out)
{
double total, ratio = 0.0;
const char *color;
int ctx = evsel_context(evsel);
total = avg_stats(&runtime_l1_icache_stats[ctx][cpu]);
if (total)
ratio = avg / total * 100.0;
color = get_ratio_color(GRC_CACHE_MISSES, ratio);
out->print_metric(out->ctx, color, "%7.2f%%", "of all L1-icache hits", ratio);
}
static void print_dtlb_cache_misses(int cpu,
struct perf_evsel *evsel __maybe_unused,
double avg,
struct perf_stat_output_ctx *out)
{
double total, ratio = 0.0;
const char *color;
int ctx = evsel_context(evsel);
total = avg_stats(&runtime_dtlb_cache_stats[ctx][cpu]);
if (total)
ratio = avg / total * 100.0;
color = get_ratio_color(GRC_CACHE_MISSES, ratio);
out->print_metric(out->ctx, color, "%7.2f%%", "of all dTLB cache hits", ratio);
}
static void print_itlb_cache_misses(int cpu,
struct perf_evsel *evsel __maybe_unused,
double avg,
struct perf_stat_output_ctx *out)
{
double total, ratio = 0.0;
const char *color;
int ctx = evsel_context(evsel);
total = avg_stats(&runtime_itlb_cache_stats[ctx][cpu]);
if (total)
ratio = avg / total * 100.0;
color = get_ratio_color(GRC_CACHE_MISSES, ratio);
out->print_metric(out->ctx, color, "%7.2f%%", "of all iTLB cache hits", ratio);
}
static void print_ll_cache_misses(int cpu,
struct perf_evsel *evsel __maybe_unused,
double avg,
struct perf_stat_output_ctx *out)
{
double total, ratio = 0.0;
const char *color;
int ctx = evsel_context(evsel);
total = avg_stats(&runtime_ll_cache_stats[ctx][cpu]);
if (total)
ratio = avg / total * 100.0;
color = get_ratio_color(GRC_CACHE_MISSES, ratio);
out->print_metric(out->ctx, color, "%7.2f%%", "of all LL-cache hits", ratio);
}
void perf_stat__print_shadow_stats(struct perf_evsel *evsel,
double avg, int cpu,
struct perf_stat_output_ctx *out)
{
void *ctxp = out->ctx;
print_metric_t print_metric = out->print_metric;
double total, ratio = 0.0, total2;
int ctx = evsel_context(evsel);
if (perf_evsel__match(evsel, HARDWARE, HW_INSTRUCTIONS)) {
total = avg_stats(&runtime_cycles_stats[ctx][cpu]);
if (total) {
ratio = avg / total;
print_metric(ctxp, NULL, "%7.2f ",
"insn per cycle", ratio);
} 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]));
out->new_line(ctxp);
if (total && avg) {
ratio = total / avg;
print_metric(ctxp, NULL, "%7.2f ",
"stalled cycles per insn",
ratio);
} else {
print_metric(ctxp, NULL, NULL,
"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);
else
print_metric(ctxp, NULL, NULL, "of all branches", 0);
} else if (
evsel->attr.type == PERF_TYPE_HW_CACHE &&
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);
else
print_metric(ctxp, NULL, NULL, "of all L1-dcache hits", 0);
} else if (
evsel->attr.type == PERF_TYPE_HW_CACHE &&
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);
else
print_metric(ctxp, NULL, NULL, "of all L1-icache hits", 0);
} else if (
evsel->attr.type == PERF_TYPE_HW_CACHE &&
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);
else
print_metric(ctxp, NULL, NULL, "of all dTLB cache hits", 0);
} else if (
evsel->attr.type == PERF_TYPE_HW_CACHE &&
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);
else
print_metric(ctxp, NULL, NULL, "of all iTLB cache hits", 0);
} else if (
evsel->attr.type == PERF_TYPE_HW_CACHE &&
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);
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]);
if (total)
ratio = avg * 100 / total;
if (runtime_cacherefs_stats[ctx][cpu].n != 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);
} else if (perf_evsel__match(evsel, HARDWARE, HW_STALLED_CYCLES_BACKEND)) {
print_stalled_cycles_backend(cpu, evsel, avg, out);
} else if (perf_evsel__match(evsel, HARDWARE, HW_CPU_CYCLES)) {
total = avg_stats(&runtime_nsecs_stats[cpu]);
if (total) {
ratio = avg / total;
print_metric(ctxp, NULL, "%8.3f", "GHz", ratio);
} else {
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]);
if (total)
print_metric(ctxp, NULL,
"%7.2f%%", "transactional cycles",
100.0 * (avg / total));
else
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]);
if (total2 < avg)
total2 = avg;
if (total)
print_metric(ctxp, NULL, "%7.2f%%", "aborted cycles",
100.0 * ((total2-avg) / total));
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]);
if (avg)
ratio = total / avg;
if (runtime_cycles_in_tx_stats[ctx][cpu].n != 0)
print_metric(ctxp, NULL, "%8.0f",
"cycles / transaction", ratio);
else
print_metric(ctxp, NULL, NULL, "cycles / transaction",
0);
} else if (perf_stat_evsel__is(evsel, ELISION_START)) {
total = avg_stats(&runtime_cycles_in_tx_stats[ctx][cpu]);
if (avg)
ratio = total / avg;
print_metric(ctxp, NULL, "%8.0f", "cycles / elision", ratio);
} else if (perf_evsel__match(evsel, SOFTWARE, SW_TASK_CLOCK)) {
if ((ratio = avg_stats(&walltime_nsecs_stats)) != 0)
print_metric(ctxp, NULL, "%8.3f", "CPUs utilized",
avg / ratio);
else
print_metric(ctxp, NULL, NULL, "CPUs utilized", 0);
} else if (runtime_nsecs_stats[cpu].n != 0) {
char unit = 'M';
char unit_buf[10];
total = avg_stats(&runtime_nsecs_stats[cpu]);
if (total)
ratio = 1000.0 * avg / total;
if (ratio < 0.001) {
ratio *= 1000;
unit = 'K';
}
snprintf(unit_buf, sizeof(unit_buf), "%c/sec", unit);
print_metric(ctxp, NULL, "%8.3f", unit_buf, ratio);
} else {
print_metric(ctxp, NULL, NULL, NULL, 0);
}
}
Reference in a new issue View git blame Copy permalink