| 1 | |
| 2 | |
| 3 | * Copyright (C) 2011, Red Hat Inc, Arnaldo Carvalho de Melo <[email protected]>
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| 4 | *
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| 5 | * Refactored from builtin-top.c, see that files for further copyright notes.
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| 6 |
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| 7 |
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| 8 | #include "event.h"
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| 9 | #include "evlist.h"
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| 10 | #include "evsel.h"
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| 11 | #include "parse-events.h"
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| 12 | #include "symbol.h"
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| 13 | #include "top.h"
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| 14 | #include "util.h"
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| 15 | #include <inttypes.h>
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| 16 |
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| 17 | #define SNPRINTF(buf, size, fmt, args...) \
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| 18 | ({ \
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| 19 | size_t r = snprintf(buf, size, fmt, ## args); \
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| 20 | r > size ? size : r; \
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| 21 | })
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| 22 |
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| 23 | size_t perf_top__header_snprintf(struct perf_top *top, char *bf, size_t size)
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| 24 | {
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| 25 | float samples_per_sec;
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| 26 | float ksamples_per_sec;
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| 27 | float esamples_percent;
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| 28 | struct record_opts *opts = &top->record_opts;
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| 29 | struct target *target = &opts->target;
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| 30 | size_t ret = 0;
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| 31 | int nr_cpus;
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| 32 |
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| 33 | if (top->samples) {
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| 34 | samples_per_sec = top->samples / top->delay_secs;
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| 35 | ksamples_per_sec = top->kernel_samples / top->delay_secs;
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| 36 | esamples_percent = (100.0 * top->exact_samples) / top->samples;
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| 37 | } else {
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| 38 | samples_per_sec = ksamples_per_sec = esamples_percent = 0.0;
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| 39 | }
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| 40 |
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| 41 | if (!perf_guest) {
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| 42 | float ksamples_percent = 0.0;
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| 43 |
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| 44 | if (samples_per_sec)
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| 45 | ksamples_percent = (100.0 * ksamples_per_sec) /
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| 46 | samples_per_sec;
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| 47 | ret = SNPRINTF(bf, size,
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| 48 | " PerfTop:%8.0f irqs/sec kernel:%4.1f%%"
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| 49 | " exact: %4.1f%% lost: %" PRIu64 "/%" PRIu64 " drop: %" PRIu64 "/%" PRIu64 " [",
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| 50 | samples_per_sec, ksamples_percent, esamples_percent,
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| 51 | top->lost, top->lost_total, top->drop, top->drop_total);
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| 52 | } else {
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| 53 | float us_samples_per_sec = top->us_samples / top->delay_secs;
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| 54 | float guest_kernel_samples_per_sec = top->guest_kernel_samples / top->delay_secs;
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| 55 | float guest_us_samples_per_sec = top->guest_us_samples / top->delay_secs;
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| 56 |
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| 57 | ret = SNPRINTF(bf, size,
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| 58 | " PerfTop:%8.0f irqs/sec kernel:%4.1f%% us:%4.1f%%"
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| 59 | " guest kernel:%4.1f%% guest us:%4.1f%%"
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| 60 | " exact: %4.1f%% [", samples_per_sec,
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| 61 | 100.0 - (100.0 * ((samples_per_sec - ksamples_per_sec) /
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| 62 | samples_per_sec)),
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| 63 | 100.0 - (100.0 * ((samples_per_sec - us_samples_per_sec) /
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| 64 | samples_per_sec)),
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| 65 | 100.0 - (100.0 * ((samples_per_sec -
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| 66 | guest_kernel_samples_per_sec) /
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| 67 | samples_per_sec)),
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| 68 | 100.0 - (100.0 * ((samples_per_sec -
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| 69 | guest_us_samples_per_sec) /
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| 70 | samples_per_sec)),
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| 71 | esamples_percent);
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| 72 | }
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| 73 |
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| 74 | if (evlist__nr_entries(top->evlist) == 1) {
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| 75 | struct evsel *first = evlist__first(top->evlist);
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| 76 | ret += SNPRINTF(bf + ret, size - ret, "%" PRIu64 "%s ",
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| 77 | (uint64_t)first->core.attr.sample_period,
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| 78 | opts->freq ? "Hz" : "");
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| 79 | }
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| 80 |
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| 81 | ret += SNPRINTF(bf + ret, size - ret, "%s", evsel__name(top->sym_evsel));
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| 82 |
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| 83 | ret += SNPRINTF(bf + ret, size - ret, "], ");
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| 84 |
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| 85 | if (target->pid)
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| 86 | ret += SNPRINTF(bf + ret, size - ret, " (target_pid: %s",
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| 87 | target->pid);
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| 88 | else if (target->tid)
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| 89 | ret += SNPRINTF(bf + ret, size - ret, " (target_tid: %s",
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| 90 | target->tid);
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| 91 | else if (top->uid_str != NULL)
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| 92 | ret += SNPRINTF(bf + ret, size - ret, " (uid: %s",
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| 93 | top->uid_str);
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| 94 | else
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| 95 | ret += SNPRINTF(bf + ret, size - ret, " (all");
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| 96 |
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| 97 | nr_cpus = perf_cpu_map__nr(evlist__core(top->evlist)->user_requested_cpus);
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| 98 | if (target->cpu_list)
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| 99 | ret += SNPRINTF(bf + ret, size - ret, ", CPU%s: %s)",
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| 100 | nr_cpus > 1 ? "s" : "",
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| 101 | target->cpu_list);
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| 102 | else {
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| 103 | if (target->tid)
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| 104 | ret += SNPRINTF(bf + ret, size - ret, ")");
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| 105 | else
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| 106 | ret += SNPRINTF(bf + ret, size - ret, ", %d CPU%s)",
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| 107 | nr_cpus, nr_cpus > 1 ? "s" : "");
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| 108 | }
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| 109 |
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| 110 | perf_top__reset_sample_counters(top);
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| 111 | return ret;
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| 112 | }
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| 113 |
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| 114 | void perf_top__reset_sample_counters(struct perf_top *top)
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| 115 | {
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| 116 | top->samples = top->us_samples = top->kernel_samples =
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| 117 | top->exact_samples = top->guest_kernel_samples =
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| 118 | top->guest_us_samples = top->lost = top->drop = 0;
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| 119 | }
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