mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-28 00:56:33 +07:00
94ad6e7e36
Use conditional variable logic to synchronize between the reading and
processing threads. Currently it's done by having mutex around rotation
code.
Using a POSIX cond variable to sync both threads after queues rotation:
Process thread:
- Detects data
- Switches queues
- Sets rotate variable
- Waits in pthread_cond_wait()
Read thread:
- Detects rotate is set
- Kicks the process thread with a pthread_cond_signal()
After this rotation is safely completed and both threads can continue
with the new queue.
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Acked-by: David S. Miller <davem@davemloft.net>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/n/tip-3rdeg23rv3brvy1pwt3igvyw@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
58 lines
1.4 KiB
C
58 lines
1.4 KiB
C
/* 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;
|
||
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 "[H[2J"
|
||
|
||
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 */
|