linux/tools/perf/util/top.h
Jiri Olsa 97f7e0b33d perf top: Save and display the drop count stats
Add drop count to 'perf top' headers:

  # perf top --stdio
   PerfTop:    3549 irqs/sec  kernel:51.8%  exact: 100.0% lost: 0/0 drop: 0/0 [4000Hz cycles:ppp],  (all, 8 CPUs)

  # perf top
  Samples: 0  of event 'cycles:ppp', 4000 Hz, Event count (approx.): 0 lost: 0/0 drop: 0/0

The format is: <current period drop>/<total drop>

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Acked-by: David S. Miller <davem@davemloft.net>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/n/tip-2lj87zz8tq9ye1ntax3ulw0n@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2018-12-17 14:58:33 -03:00

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/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __PERF_TOP_H
#define __PERF_TOP_H 1
#include "tool.h"
#include "annotate.h"
#include <linux/types.h>
#include <stddef.h>
#include <stdbool.h>
#include <sys/ioctl.h>
struct perf_evlist;
struct perf_evsel;
struct perf_session;
struct perf_top {
struct perf_tool tool;
struct perf_evlist *evlist;
struct record_opts record_opts;
struct annotation_options annotation_opts;
/*
* Symbols will be added here in perf_event__process_sample and will
* get out after decayed.
*/
u64 samples, lost, lost_total, drop, drop_total;
u64 kernel_samples, us_samples;
u64 exact_samples;
u64 guest_us_samples, guest_kernel_samples;
int print_entries, count_filter, delay_secs;
int max_stack;
bool hide_kernel_symbols, hide_user_symbols, zero;
bool use_tui, use_stdio;
bool vmlinux_warned;
bool dump_symtab;
struct hist_entry *sym_filter_entry;
struct perf_evsel *sym_evsel;
struct perf_session *session;
struct winsize winsize;
int realtime_prio;
const char *sym_filter;
float min_percent;
unsigned int nr_threads_synthesize;
struct {
struct ordered_events *in;
struct ordered_events data[2];
bool rotate;
pthread_mutex_t mutex;
pthread_cond_t cond;
} qe;
};
#define CONSOLE_CLEAR ""
size_t perf_top__header_snprintf(struct perf_top *top, char *bf, size_t size);
void perf_top__reset_sample_counters(struct perf_top *top);
#endif /* __PERF_TOP_H */