~ [ source navigation ] ~ [ diff markup ] ~ [ identifier search ] ~

TOMOYO Linux Cross Reference
Linux/tools/perf/util/top.c

Version: ~ [ linux-5.2-rc1 ] ~ [ linux-5.1.2 ] ~ [ linux-5.0.16 ] ~ [ linux-4.20.17 ] ~ [ linux-4.19.43 ] ~ [ linux-4.18.20 ] ~ [ linux-4.17.19 ] ~ [ linux-4.16.18 ] ~ [ linux-4.15.18 ] ~ [ linux-4.14.119 ] ~ [ linux-4.13.16 ] ~ [ linux-4.12.14 ] ~ [ linux-4.11.12 ] ~ [ linux-4.10.17 ] ~ [ linux-4.9.176 ] ~ [ linux-4.8.17 ] ~ [ linux-4.7.10 ] ~ [ linux-4.6.7 ] ~ [ linux-4.5.7 ] ~ [ linux-4.4.179 ] ~ [ linux-4.3.6 ] ~ [ linux-4.2.8 ] ~ [ linux-4.1.52 ] ~ [ linux-4.0.9 ] ~ [ linux-3.19.8 ] ~ [ linux-3.18.139 ] ~ [ linux-3.17.8 ] ~ [ linux-3.16.67 ] ~ [ linux-3.15.10 ] ~ [ linux-3.14.79 ] ~ [ linux-3.13.11 ] ~ [ linux-3.12.74 ] ~ [ linux-3.11.10 ] ~ [ linux-3.10.108 ] ~ [ linux-3.9.11 ] ~ [ linux-3.8.13 ] ~ [ linux-3.7.10 ] ~ [ linux-3.6.11 ] ~ [ linux-3.5.7 ] ~ [ linux-3.4.113 ] ~ [ linux-3.3.8 ] ~ [ linux-3.2.102 ] ~ [ linux-3.1.10 ] ~ [ linux-3.0.101 ] ~ [ linux-2.6.39.4 ] ~ [ linux-2.6.38.8 ] ~ [ linux-2.6.37.6 ] ~ [ linux-2.6.36.4 ] ~ [ linux-2.6.35.14 ] ~ [ linux-2.6.34.15 ] ~ [ linux-2.6.33.20 ] ~ [ linux-2.6.32.71 ] ~ [ linux-2.6.0 ] ~ [ linux-2.4.37.11 ] ~ [ unix-v6-master ] ~ [ ccs-tools-1.8.5 ] ~ [ policy-sample ] ~
Architecture: ~ [ i386 ] ~ [ alpha ] ~ [ m68k ] ~ [ mips ] ~ [ ppc ] ~ [ sparc ] ~ [ sparc64 ] ~

  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;
 27         float ksamples_per_sec;
 28         float esamples_percent;
 29         struct record_opts *opts = &top->record_opts;
 30         struct target *target = &opts->target;
 31         size_t ret = 0;
 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->nr_entries == 1) {
 75                 struct perf_evsel *first = perf_evlist__first(top->evlist);
 76                 ret += SNPRINTF(bf + ret, size - ret, "%" PRIu64 "%s ",
 77                                 (uint64_t)first->attr.sample_period,
 78                                 opts->freq ? "Hz" : "");
 79         }
 80 
 81         ret += SNPRINTF(bf + ret, size - ret, "%s", perf_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         else
 95                 ret += SNPRINTF(bf + ret, size - ret, " (all");
 96 
 97         if (target->cpu_list)
 98                 ret += SNPRINTF(bf + ret, size - ret, ", CPU%s: %s)",
 99                                 top->evlist->cpus->nr > 1 ? "s" : "",
100                                 target->cpu_list);
101         else {
102                 if (target->tid)
103                         ret += SNPRINTF(bf + ret, size - ret, ")");
104                 else
105                         ret += SNPRINTF(bf + ret, size - ret, ", %d CPU%s)",
106                                         top->evlist->cpus->nr,
107                                         top->evlist->cpus->nr > 1 ? "s" : "");
108         }
109 
110         perf_top__reset_sample_counters(top);
111         return ret;
112 }
113 
114 void 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 

~ [ source navigation ] ~ [ diff markup ] ~ [ identifier search ] ~

kernel.org | git.kernel.org | LWN.net | Project Home | Wiki (Japanese) | Wiki (English) | SVN repository | Mail admin

Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.

osdn.jp