1 // SPDX-License-Identifier: GPL-2.0-only
3 * Copyright (C) 2011, Red Hat Inc, Arnaldo Carvalho de Melo <acme@redhat.com>
5 * Refactored from builtin-top.c, see that files for further copyright notes.
11 #include "parse-events.h"
17 #define SNPRINTF(buf, size, fmt, args...) \
19 size_t r = snprintf(buf, size, fmt, ## args); \
20 r > size ? size : r; \
23 size_t perf_top__header_snprintf(struct perf_top *top, char *bf, size_t size)
25 float samples_per_sec;
26 float ksamples_per_sec;
27 float esamples_percent;
28 struct record_opts *opts = &top->record_opts;
29 struct target *target = &opts->target;
34 samples_per_sec = top->samples / top->delay_secs;
35 ksamples_per_sec = top->kernel_samples / top->delay_secs;
36 esamples_percent = (100.0 * top->exact_samples) / top->samples;
38 samples_per_sec = ksamples_per_sec = esamples_percent = 0.0;
42 float ksamples_percent = 0.0;
45 ksamples_percent = (100.0 * ksamples_per_sec) /
47 ret = SNPRINTF(bf, size,
48 " PerfTop:%8.0f irqs/sec kernel:%4.1f%%"
49 " exact: %4.1f%% lost: %" PRIu64 "/%" PRIu64 " drop: %" PRIu64 "/%" PRIu64 " [",
50 samples_per_sec, ksamples_percent, esamples_percent,
51 top->lost, top->lost_total, top->drop, top->drop_total);
53 float us_samples_per_sec = top->us_samples / top->delay_secs;
54 float guest_kernel_samples_per_sec = top->guest_kernel_samples / top->delay_secs;
55 float guest_us_samples_per_sec = top->guest_us_samples / top->delay_secs;
57 ret = SNPRINTF(bf, size,
58 " PerfTop:%8.0f irqs/sec kernel:%4.1f%% us:%4.1f%%"
59 " guest kernel:%4.1f%% guest us:%4.1f%%"
60 " exact: %4.1f%% [", samples_per_sec,
61 100.0 - (100.0 * ((samples_per_sec - ksamples_per_sec) /
63 100.0 - (100.0 * ((samples_per_sec - us_samples_per_sec) /
65 100.0 - (100.0 * ((samples_per_sec -
66 guest_kernel_samples_per_sec) /
68 100.0 - (100.0 * ((samples_per_sec -
69 guest_us_samples_per_sec) /
74 if (top->evlist->core.nr_entries == 1) {
75 struct evsel *first = evlist__first(top->evlist);
76 ret += SNPRINTF(bf + ret, size - ret, "%" PRIu64 "%s ",
77 (uint64_t)first->core.attr.sample_period,
78 opts->freq ? "Hz" : "");
81 ret += SNPRINTF(bf + ret, size - ret, "%s", evsel__name(top->sym_evsel));
83 ret += SNPRINTF(bf + ret, size - ret, "], ");
86 ret += SNPRINTF(bf + ret, size - ret, " (target_pid: %s",
89 ret += SNPRINTF(bf + ret, size - ret, " (target_tid: %s",
91 else if (target->uid_str != NULL)
92 ret += SNPRINTF(bf + ret, size - ret, " (uid: %s",
95 ret += SNPRINTF(bf + ret, size - ret, " (all");
97 nr_cpus = perf_cpu_map__nr(top->evlist->core.user_requested_cpus);
99 ret += SNPRINTF(bf + ret, size - ret, ", CPU%s: %s)",
100 nr_cpus > 1 ? "s" : "",
104 ret += SNPRINTF(bf + ret, size - ret, ")");
106 ret += SNPRINTF(bf + ret, size - ret, ", %d CPU%s)",
107 nr_cpus, nr_cpus > 1 ? "s" : "");
110 perf_top__reset_sample_counters(top);
114 void perf_top__reset_sample_counters(struct perf_top *top)
116 top->samples = top->us_samples = top->kernel_samples =
117 top->exact_samples = top->guest_kernel_samples =
118 top->guest_us_samples = top->lost = top->drop = 0;