From 5d1646d90e1f2cceb9f0828f4b28318cd0ec7744 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sat, 27 Apr 2024 12:05:51 +0200 Subject: Adding upstream version 5.10.209. Signed-off-by: Daniel Baumann --- tools/perf/perf-read-vdso.c | 35 +++++++++++++++++++++++++++++++++++ 1 file changed, 35 insertions(+) create mode 100644 tools/perf/perf-read-vdso.c (limited to 'tools/perf/perf-read-vdso.c') diff --git a/tools/perf/perf-read-vdso.c b/tools/perf/perf-read-vdso.c new file mode 100644 index 000000000..aaa5210ea --- /dev/null +++ b/tools/perf/perf-read-vdso.c @@ -0,0 +1,35 @@ +// SPDX-License-Identifier: GPL-2.0 +#include +#include + +#define VDSO__MAP_NAME "[vdso]" + +/* + * Include definition of find_map() also used in util/vdso.c for + * building perf. + */ +#include "util/find-map.c" + +int main(void) +{ + void *start, *end; + size_t size, written; + + if (find_map(&start, &end, VDSO__MAP_NAME)) + return 1; + + size = end - start; + + while (size) { + written = fwrite(start, 1, size, stdout); + if (!written) + return 1; + start += written; + size -= written; + } + + if (fflush(stdout)) + return 1; + + return 0; +} -- cgit v1.2.3