linux_dsm_epyc7002/tools/perf/util/record.h
Adrian Hunter a8fcbd269b perf tools: Add FIFO file names as alternative options to --control
Enable the --control option to accept file names as an alternative to
file descriptors.

Example:

  $ mkfifo perf.control
  $ mkfifo perf.ack
  $ cat perf.ack &
  [1] 6808
  $ perf record --control fifo:perf.control,perf.ack -- sleep 300 &
  [2] 6810
  $ echo disable > perf.control
  $ Events disabled
  ack

  $ echo enable > perf.control
  $ Events enabled
  ack

  $ echo disable > perf.control
  $ Events disabled
  ack

  $ kill %2
  [ perf record: Woken up 4 times to write data ]
  $ [ perf record: Captured and wrote 0.018 MB perf.data (7 samples) ]

  [1]-  Done                    cat perf.ack
  [2]+  Terminated              perf record --control fifo:perf.control,perf.ack -- sleep 300
  $

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Acked-by: Alexey Budankov <alexey.budankov@linux.intel.com>
Acked-by: Jiri Olsa <jolsa@redhat.com>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: http://lore.kernel.org/lkml/20200902105707.11491-1-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-09-04 14:38:15 -03:00

90 lines
2.3 KiB
C

/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _PERF_RECORD_H
#define _PERF_RECORD_H
#include <time.h>
#include <stdbool.h>
#include <linux/types.h>
#include <linux/stddef.h>
#include <linux/perf_event.h>
#include "util/target.h"
struct option;
struct record_opts {
struct target target;
bool group;
bool inherit_stat;
bool no_buffering;
bool no_inherit;
bool no_inherit_set;
bool no_samples;
bool raw_samples;
bool sample_address;
bool sample_phys_addr;
bool sample_weight;
bool sample_time;
bool sample_time_set;
bool sample_cpu;
bool period;
bool period_set;
bool running_time;
bool full_auxtrace;
bool auxtrace_snapshot_mode;
bool auxtrace_snapshot_on_exit;
bool auxtrace_sample_mode;
bool record_namespaces;
bool record_cgroup;
bool record_switch_events;
bool record_switch_events_set;
bool all_kernel;
bool all_user;
bool kernel_callchains;
bool user_callchains;
bool tail_synthesize;
bool overwrite;
bool ignore_missing_thread;
bool strict_freq;
bool sample_id;
bool no_bpf_event;
bool kcore;
bool text_poke;
unsigned int freq;
unsigned int mmap_pages;
unsigned int auxtrace_mmap_pages;
unsigned int user_freq;
u64 branch_stack;
u64 sample_intr_regs;
u64 sample_user_regs;
u64 default_interval;
u64 user_interval;
size_t auxtrace_snapshot_size;
const char *auxtrace_snapshot_opts;
const char *auxtrace_sample_opts;
bool sample_transaction;
int initial_delay;
bool use_clockid;
clockid_t clockid;
u64 clockid_res_ns;
int nr_cblocks;
int affinity;
int mmap_flush;
unsigned int comp_level;
unsigned int nr_threads_synthesize;
int ctl_fd;
int ctl_fd_ack;
bool ctl_fd_close;
};
extern const char * const *record_usage;
extern struct option *record_options;
int record__parse_freq(const struct option *opt, const char *str, int unset);
static inline bool record_opts__no_switch_events(const struct record_opts *opts)
{
return opts->record_switch_events_set && !opts->record_switch_events;
}
#endif // _PERF_RECORD_H