1// SPDX-License-Identifier: GPL-2.0-only
2
3#define __printf(a, b)  __attribute__((format(printf, a, b)))
4
5#include <stdio.h>
6#include <stdarg.h>
7#include <unistd.h>
8#include <linux/compiler.h>
9#include <perf/core.h>
10#include <internal/lib.h>
11#include "internal.h"
12
13static int __base_pr(enum libperf_print_level level __maybe_unused, const char *format,
14		     va_list args)
15{
16	return vfprintf(stderr, format, args);
17}
18
19static libperf_print_fn_t __libperf_pr = __base_pr;
20
21__printf(2, 3)
22void libperf_print(enum libperf_print_level level, const char *format, ...)
23{
24	va_list args;
25
26	if (!__libperf_pr)
27		return;
28
29	va_start(args, format);
30	__libperf_pr(level, format, args);
31	va_end(args);
32}
33
34void libperf_init(libperf_print_fn_t fn)
35{
36	page_size = sysconf(_SC_PAGE_SIZE);
37	__libperf_pr = fn;
38}
39