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https://github.com/torvalds/linux
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a1556f8479
Add the perf_set_print() function to allow setting an output function for warn/info/debug messages. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Alexey Budankov <alexey.budankov@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Michael Petlan <mpetlan@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20190721112506.12306-28-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
35 lines
671 B
C
35 lines
671 B
C
// SPDX-License-Identifier: GPL-2.0-only
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#define __printf(a, b) __attribute__((format(printf, a, b)))
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#include <stdio.h>
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#include <stdarg.h>
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#include <perf/core.h>
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#include "internal.h"
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static int __base_pr(enum libperf_print_level level, const char *format,
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va_list args)
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{
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return vfprintf(stderr, format, args);
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}
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static libperf_print_fn_t __libperf_pr = __base_pr;
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void libperf_set_print(libperf_print_fn_t fn)
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{
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__libperf_pr = fn;
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}
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__printf(2, 3)
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void libperf_print(enum libperf_print_level level, const char *format, ...)
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{
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va_list args;
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if (!__libperf_pr)
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return;
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va_start(args, format);
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__libperf_pr(level, format, args);
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va_end(args);
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}
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