mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-28 05:25:20 +07:00
22adedd304
Add two new helper functions to trace_helpers that supports polling multiple perf file descriptors for events. These are used to the XDP perf_event_output example, which needs to work with one perf fd per CPU. Reviewed-by: Jakub Kicinski <jakub.kicinski@netronome.com> Signed-off-by: Toke Høiland-Jørgensen <toke@toke.dk> Acked-by: Song Liu <songliubraving@fb.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
26 lines
727 B
C
26 lines
727 B
C
/* SPDX-License-Identifier: GPL-2.0 */
|
|
#ifndef __TRACE_HELPER_H
|
|
#define __TRACE_HELPER_H
|
|
|
|
#include <libbpf.h>
|
|
#include <linux/perf_event.h>
|
|
|
|
struct ksym {
|
|
long addr;
|
|
char *name;
|
|
};
|
|
|
|
int load_kallsyms(void);
|
|
struct ksym *ksym_search(long key);
|
|
long ksym_get_addr(const char *name);
|
|
|
|
typedef enum bpf_perf_event_ret (*perf_event_print_fn)(void *data, int size);
|
|
|
|
int perf_event_mmap(int fd);
|
|
int perf_event_mmap_header(int fd, struct perf_event_mmap_page **header);
|
|
/* return LIBBPF_PERF_EVENT_DONE or LIBBPF_PERF_EVENT_ERROR */
|
|
int perf_event_poller(int fd, perf_event_print_fn output_fn);
|
|
int perf_event_poller_multi(int *fds, struct perf_event_mmap_page **headers,
|
|
int num_fds, perf_event_print_fn output_fn);
|
|
#endif
|