Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / tools / perf / perf-read-vdso.c

diff --git a/kernel/tools/perf/perf-read-vdso.c b/kernel/tools/perf/perf-read-vdso.c
new file mode 100644 (file)
index 0000000..764e254
--- /dev/null
+++ b/kernel/tools/perf/perf-read-vdso.c
@@ -0,0 +1,34 @@
+#include <stdio.h>
+#include <string.h>
+
+#define VDSO__MAP_NAME "[vdso]"
+
+/*
+ * Include definition of find_vdso_map() also used in util/vdso.c for
+ * building perf.
+ */
+#include "util/find-vdso-map.c"
+
+int main(void)
+{
+       void *start, *end;
+       size_t size, written;
+
+       if (find_vdso_map(&start, &end))
+               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;
+}