| // SPDX-License-Identifier: GPL-2.0-only |
| /* |
| * Copyright (C) 2011, Red Hat Inc, Arnaldo Carvalho de Melo <acme@redhat.com> |
| * |
| * Refactored from builtin-top.c, see that files for further copyright notes. |
| */ |
| |
| #include "cpumap.h" |
| #include "event.h" |
| #include "evlist.h" |
| #include "evsel.h" |
| #include "parse-events.h" |
| #include "symbol.h" |
| #include "top.h" |
| #include <inttypes.h> |
| |
| #define SNPRINTF(buf, size, fmt, args...) \ |
| ({ \ |
| size_t r = snprintf(buf, size, fmt, ## args); \ |
| r > size ? size : r; \ |
| }) |
| |
| size_t perf_top__header_snprintf(struct perf_top *top, char *bf, size_t size) |
| { |
| float samples_per_sec; |
| float ksamples_per_sec; |
| float esamples_percent; |
| struct record_opts *opts = &top->record_opts; |
| struct target *target = &opts->target; |
| size_t ret = 0; |
| |
| if (top->samples) { |
| samples_per_sec = top->samples / top->delay_secs; |
| ksamples_per_sec = top->kernel_samples / top->delay_secs; |
| esamples_percent = (100.0 * top->exact_samples) / top->samples; |
| } else { |
| samples_per_sec = ksamples_per_sec = esamples_percent = 0.0; |
| } |
| |
| if (!perf_guest) { |
| float ksamples_percent = 0.0; |
| |
| if (samples_per_sec) |
| ksamples_percent = (100.0 * ksamples_per_sec) / |
| samples_per_sec; |
| ret = SNPRINTF(bf, size, |
| " PerfTop:%8.0f irqs/sec kernel:%4.1f%%" |
| " exact: %4.1f%% lost: %" PRIu64 "/%" PRIu64 " drop: %" PRIu64 "/%" PRIu64 " [", |
| samples_per_sec, ksamples_percent, esamples_percent, |
| top->lost, top->lost_total, top->drop, top->drop_total); |
| } else { |
| float us_samples_per_sec = top->us_samples / top->delay_secs; |
| float guest_kernel_samples_per_sec = top->guest_kernel_samples / top->delay_secs; |
| float guest_us_samples_per_sec = top->guest_us_samples / top->delay_secs; |
| |
| ret = SNPRINTF(bf, size, |
| " PerfTop:%8.0f irqs/sec kernel:%4.1f%% us:%4.1f%%" |
| " guest kernel:%4.1f%% guest us:%4.1f%%" |
| " exact: %4.1f%% [", samples_per_sec, |
| 100.0 - (100.0 * ((samples_per_sec - ksamples_per_sec) / |
| samples_per_sec)), |
| 100.0 - (100.0 * ((samples_per_sec - us_samples_per_sec) / |
| samples_per_sec)), |
| 100.0 - (100.0 * ((samples_per_sec - |
| guest_kernel_samples_per_sec) / |
| samples_per_sec)), |
| 100.0 - (100.0 * ((samples_per_sec - |
| guest_us_samples_per_sec) / |
| samples_per_sec)), |
| esamples_percent); |
| } |
| |
| if (top->evlist->nr_entries == 1) { |
| struct evsel *first = perf_evlist__first(top->evlist); |
| ret += SNPRINTF(bf + ret, size - ret, "%" PRIu64 "%s ", |
| (uint64_t)first->attr.sample_period, |
| opts->freq ? "Hz" : ""); |
| } |
| |
| ret += SNPRINTF(bf + ret, size - ret, "%s", perf_evsel__name(top->sym_evsel)); |
| |
| ret += SNPRINTF(bf + ret, size - ret, "], "); |
| |
| if (target->pid) |
| ret += SNPRINTF(bf + ret, size - ret, " (target_pid: %s", |
| target->pid); |
| else if (target->tid) |
| ret += SNPRINTF(bf + ret, size - ret, " (target_tid: %s", |
| target->tid); |
| else if (target->uid_str != NULL) |
| ret += SNPRINTF(bf + ret, size - ret, " (uid: %s", |
| target->uid_str); |
| else |
| ret += SNPRINTF(bf + ret, size - ret, " (all"); |
| |
| if (target->cpu_list) |
| ret += SNPRINTF(bf + ret, size - ret, ", CPU%s: %s)", |
| top->evlist->cpus->nr > 1 ? "s" : "", |
| target->cpu_list); |
| else { |
| if (target->tid) |
| ret += SNPRINTF(bf + ret, size - ret, ")"); |
| else |
| ret += SNPRINTF(bf + ret, size - ret, ", %d CPU%s)", |
| top->evlist->cpus->nr, |
| top->evlist->cpus->nr > 1 ? "s" : ""); |
| } |
| |
| perf_top__reset_sample_counters(top); |
| return ret; |
| } |
| |
| void perf_top__reset_sample_counters(struct perf_top *top) |
| { |
| top->samples = top->us_samples = top->kernel_samples = |
| top->exact_samples = top->guest_kernel_samples = |
| top->guest_us_samples = top->lost = top->drop = 0; |
| } |