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Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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123456789101112131415161718192021222324252627282930313233343536373839// SPDX-License-Identifier: GPL-2.0-only
#define __printf(a, b) __attribute__((format(printf, a, b)))
#include <stdio.h>#include <stdarg.h>#include <unistd.h>#include <linux/compiler.h>#include <perf/core.h>#include <internal/lib.h>#include "internal.h"
static int __base_pr(enum libperf_print_level level __maybe_unused, const char *format, va_list args){ return vfprintf(stderr, format, args);}
static libperf_print_fn_t __libperf_pr = __base_pr;
__printf(2, 3)void libperf_print(enum libperf_print_level level, const char *format, ...){ va_list args;
if (!__libperf_pr) return;
va_start(args, format); __libperf_pr(level, format, args); va_end(args);}
void libperf_init(libperf_print_fn_t fn){ page_size = sysconf(_SC_PAGE_SIZE); __libperf_pr = fn;}