1
2
3
4
5
6
7
8
9#include "event.h"
10#include "evlist.h"
11#include "evsel.h"
12#include "parse-events.h"
13#include "symbol.h"
14#include "top.h"
15#include "../perf.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
24size_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->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", 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->core.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->core.cpus->nr,
107 top->evlist->core.cpus->nr > 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