1 /* 2 * Copyright (C) 2011, Red Hat Inc, Arnaldo Carvalho de Melo <acme@redhat.com> 3 * 4 * Refactored from builtin-top.c, see that files for further copyright notes. 5 * 6 * Released under the GPL v2. (and only v2, not any later version) 7 */ 8 9 #include "cpumap.h" 10 #include "event.h" 11 #include "evlist.h" 12 #include "evsel.h" 13 #include "parse-events.h" 14 #include "symbol.h" 15 #include "top.h" 16 #include <inttypes.h> 17 18 #define SNPRINTF(buf, size, fmt, args...) \ 19 ({ \ 20 size_t r = snprintf(buf, size, fmt, ## args); \ 21 r > size ? size : r; \ 22 }) 23 24 size_t perf_top__header_snprintf(struct perf_top *top, char *bf, size_t size) 25 { 26 float samples_per_sec = top->samples / top->delay_secs; 27 float ksamples_per_sec = top->kernel_samples / top->delay_secs; 28 float esamples_percent = (100.0 * top->exact_samples) / top->samples; 29 struct perf_record_opts *opts = &top->record_opts; 30 struct perf_target *target = &opts->target; 31 size_t ret = 0; 32 33 if (!perf_guest) { 34 ret = SNPRINTF(bf, size, 35 " PerfTop:%8.0f irqs/sec kernel:%4.1f%%" 36 " exact: %4.1f%% [", samples_per_sec, 37 100.0 - (100.0 * ((samples_per_sec - ksamples_per_sec) / 38 samples_per_sec)), 39 esamples_percent); 40 } else { 41 float us_samples_per_sec = top->us_samples / top->delay_secs; 42 float guest_kernel_samples_per_sec = top->guest_kernel_samples / top->delay_secs; 43 float guest_us_samples_per_sec = top->guest_us_samples / top->delay_secs; 44 45 ret = SNPRINTF(bf, size, 46 " PerfTop:%8.0f irqs/sec kernel:%4.1f%% us:%4.1f%%" 47 " guest kernel:%4.1f%% guest us:%4.1f%%" 48 " exact: %4.1f%% [", samples_per_sec, 49 100.0 - (100.0 * ((samples_per_sec - ksamples_per_sec) / 50 samples_per_sec)), 51 100.0 - (100.0 * ((samples_per_sec - us_samples_per_sec) / 52 samples_per_sec)), 53 100.0 - (100.0 * ((samples_per_sec - 54 guest_kernel_samples_per_sec) / 55 samples_per_sec)), 56 100.0 - (100.0 * ((samples_per_sec - 57 guest_us_samples_per_sec) / 58 samples_per_sec)), 59 esamples_percent); 60 } 61 62 if (top->evlist->nr_entries == 1) { 63 struct perf_evsel *first = perf_evlist__first(top->evlist); 64 ret += SNPRINTF(bf + ret, size - ret, "%" PRIu64 "%s ", 65 (uint64_t)first->attr.sample_period, 66 opts->freq ? "Hz" : ""); 67 } 68 69 ret += SNPRINTF(bf + ret, size - ret, "%s", perf_evsel__name(top->sym_evsel)); 70 71 ret += SNPRINTF(bf + ret, size - ret, "], "); 72 73 if (target->pid) 74 ret += SNPRINTF(bf + ret, size - ret, " (target_pid: %s", 75 target->pid); 76 else if (target->tid) 77 ret += SNPRINTF(bf + ret, size - ret, " (target_tid: %s", 78 target->tid); 79 else if (target->uid_str != NULL) 80 ret += SNPRINTF(bf + ret, size - ret, " (uid: %s", 81 target->uid_str); 82 else 83 ret += SNPRINTF(bf + ret, size - ret, " (all"); 84 85 if (target->cpu_list) 86 ret += SNPRINTF(bf + ret, size - ret, ", CPU%s: %s)", 87 top->evlist->cpus->nr > 1 ? "s" : "", 88 target->cpu_list); 89 else { 90 if (target->tid) 91 ret += SNPRINTF(bf + ret, size - ret, ")"); 92 else 93 ret += SNPRINTF(bf + ret, size - ret, ", %d CPU%s)", 94 top->evlist->cpus->nr, 95 top->evlist->cpus->nr > 1 ? "s" : ""); 96 } 97 98 return ret; 99 } 100 101 void perf_top__reset_sample_counters(struct perf_top *top) 102 { 103 top->samples = top->us_samples = top->kernel_samples = 104 top->exact_samples = top->guest_kernel_samples = 105 top->guest_us_samples = 0; 106 } 107