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-rw-r--r--tools/perf/util/vdso.c37
1 files changed, 6 insertions, 31 deletions
diff --git a/tools/perf/util/vdso.c b/tools/perf/util/vdso.c
index adca69384fcc..f51390a1ed51 100644
--- a/tools/perf/util/vdso.c
+++ b/tools/perf/util/vdso.c
@@ -15,6 +15,12 @@
15#include "linux/string.h" 15#include "linux/string.h"
16#include "debug.h" 16#include "debug.h"
17 17
18/*
19 * Include definition of find_vdso_map() also used in perf-read-vdso.c for
20 * building perf-read-vdso32 and perf-read-vdsox32.
21 */
22#include "find-vdso-map.c"
23
18#define VDSO__TEMP_FILE_NAME "/tmp/perf-vdso.so-XXXXXX" 24#define VDSO__TEMP_FILE_NAME "/tmp/perf-vdso.so-XXXXXX"
19 25
20struct vdso_file { 26struct vdso_file {
@@ -40,37 +46,6 @@ static struct vdso_info *vdso_info__new(void)
40 return memdup(&vdso_info_init, sizeof(vdso_info_init)); 46 return memdup(&vdso_info_init, sizeof(vdso_info_init));
41} 47}
42 48
43static int find_vdso_map(void **start, void **end)
44{
45 FILE *maps;
46 char line[128];
47 int found = 0;
48
49 maps = fopen("/proc/self/maps", "r");
50 if (!maps) {
51 pr_err("vdso: cannot open maps\n");
52 return -1;
53 }
54
55 while (!found && fgets(line, sizeof(line), maps)) {
56 int m = -1;
57
58 /* We care only about private r-x mappings. */
59 if (2 != sscanf(line, "%p-%p r-xp %*x %*x:%*x %*u %n",
60 start, end, &m))
61 continue;
62 if (m < 0)
63 continue;
64
65 if (!strncmp(&line[m], VDSO__MAP_NAME,
66 sizeof(VDSO__MAP_NAME) - 1))
67 found = 1;
68 }
69
70 fclose(maps);
71 return !found;
72}
73
74static char *get_file(struct vdso_file *vdso_file) 49static char *get_file(struct vdso_file *vdso_file)
75{ 50{
76 char *vdso = NULL; 51 char *vdso = NULL;