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-rw-r--r--tools/perf/util/util.c15
1 files changed, 10 insertions, 5 deletions
diff --git a/tools/perf/util/util.c b/tools/perf/util/util.c
index 3cd42995ac6f..988111e0bab5 100644
--- a/tools/perf/util/util.c
+++ b/tools/perf/util/util.c
@@ -350,8 +350,12 @@ fetch_ubuntu_kernel_version(unsigned int *puint)
size_t line_len = 0;
char *ptr, *line = NULL;
int version, patchlevel, sublevel, err;
- FILE *vsig = fopen("/proc/version_signature", "r");
+ FILE *vsig;
+ if (!puint)
+ return 0;
+
+ vsig = fopen("/proc/version_signature", "r");
if (!vsig) {
pr_debug("Open /proc/version_signature failed: %s\n",
strerror(errno));
@@ -381,8 +385,7 @@ fetch_ubuntu_kernel_version(unsigned int *puint)
goto errout;
}
- if (puint)
- *puint = (version << 16) + (patchlevel << 8) + sublevel;
+ *puint = (version << 16) + (patchlevel << 8) + sublevel;
err = 0;
errout:
free(line);
@@ -409,6 +412,9 @@ fetch_kernel_version(unsigned int *puint, char *str,
str[str_size - 1] = '\0';
}
+ if (!puint || int_ver_ready)
+ return 0;
+
err = sscanf(utsname.release, "%d.%d.%d",
&version, &patchlevel, &sublevel);
@@ -418,8 +424,7 @@ fetch_kernel_version(unsigned int *puint, char *str,
return -1;
}
- if (puint && !int_ver_ready)
- *puint = (version << 16) + (patchlevel << 8) + sublevel;
+ *puint = (version << 16) + (patchlevel << 8) + sublevel;
return 0;
}