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1// SPDX-License-Identifier: GPL-2.0-only2/*3 * Copyright (C) 2011, Red Hat Inc, Arnaldo Carvalho de Melo <acme@redhat.com>4 *5 * Refactored from builtin-top.c, see that files for further copyright notes.6 */7 8#include "event.h"9#include "evlist.h"10#include "evsel.h"11#include "parse-events.h"12#include "symbol.h"13#include "top.h"14#include "util.h"15#include <inttypes.h>16 17#define SNPRINTF(buf, size, fmt, args...) \18({ \19 size_t r = snprintf(buf, size, fmt, ## args); \20 r > size ? size : r; \21})22 23size_t perf_top__header_snprintf(struct perf_top *top, char *bf, size_t size)24{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;30 size_t ret = 0;31 int nr_cpus;32 33 if (top->samples) {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;37 } else {38 samples_per_sec = ksamples_per_sec = esamples_percent = 0.0;39 }40 41 if (!perf_guest) {42 float ksamples_percent = 0.0;43 44 if (samples_per_sec)45 ksamples_percent = (100.0 * ksamples_per_sec) /46 samples_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);52 } else {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;56 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) /62 samples_per_sec)),63 100.0 - (100.0 * ((samples_per_sec - us_samples_per_sec) /64 samples_per_sec)),65 100.0 - (100.0 * ((samples_per_sec -66 guest_kernel_samples_per_sec) /67 samples_per_sec)),68 100.0 - (100.0 * ((samples_per_sec -69 guest_us_samples_per_sec) /70 samples_per_sec)),71 esamples_percent);72 }73 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" : "");79 }80 81 ret += SNPRINTF(bf + ret, size - ret, "%s", evsel__name(top->sym_evsel));82 83 ret += SNPRINTF(bf + ret, size - ret, "], ");84 85 if (target->pid)86 ret += SNPRINTF(bf + ret, size - ret, " (target_pid: %s",87 target->pid);88 else if (target->tid)89 ret += SNPRINTF(bf + ret, size - ret, " (target_tid: %s",90 target->tid);91 else if (target->uid_str != NULL)92 ret += SNPRINTF(bf + ret, size - ret, " (uid: %s",93 target->uid_str);94 else95 ret += SNPRINTF(bf + ret, size - ret, " (all");96 97 nr_cpus = perf_cpu_map__nr(top->evlist->core.user_requested_cpus);98 if (target->cpu_list)99 ret += SNPRINTF(bf + ret, size - ret, ", CPU%s: %s)",100 nr_cpus > 1 ? "s" : "",101 target->cpu_list);102 else {103 if (target->tid)104 ret += SNPRINTF(bf + ret, size - ret, ")");105 else106 ret += SNPRINTF(bf + ret, size - ret, ", %d CPU%s)",107 nr_cpus, nr_cpus > 1 ? "s" : "");108 }109 110 perf_top__reset_sample_counters(top);111 return ret;112}113 114void perf_top__reset_sample_counters(struct perf_top *top)115{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;119}120