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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 10:05:51 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 10:05:51 +0000 |
commit | 5d1646d90e1f2cceb9f0828f4b28318cd0ec7744 (patch) | |
tree | a94efe259b9009378be6d90eb30d2b019d95c194 /tools/perf/perf-read-vdso.c | |
parent | Initial commit. (diff) | |
download | linux-upstream.tar.xz linux-upstream.zip |
Adding upstream version 5.10.209.upstream/5.10.209upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'tools/perf/perf-read-vdso.c')
-rw-r--r-- | tools/perf/perf-read-vdso.c | 35 |
1 files changed, 35 insertions, 0 deletions
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 <stdio.h> +#include <string.h> + +#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; +} |