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authorMaxime Ripard <mripard@kernel.org>2024-02-26 17:23:00 +0300
committerMaxime Ripard <mripard@kernel.org>2024-02-26 17:23:00 +0300
commit2f910859724b53f1cd3579246e3d9bebb16d78b8 (patch)
tree75cd2329b7e737865bf28ea734a2e0649c02a5bf /tools/testing/selftests/kvm/lib/test_util.c
parent86bf8cfda6d2a6720fa2e6e676c98f0882c9d3d7 (diff)
parent72fa02fdf83306c52bc1eede28359e3fa32a151a (diff)
downloadlinux-2f910859724b53f1cd3579246e3d9bebb16d78b8.tar.xz
Merge drm/drm-fixes into drm-misc-fixes
Sima needs a more recent release to apply a patch. Signed-off-by: Maxime Ripard <mripard@kernel.org>
Diffstat (limited to 'tools/testing/selftests/kvm/lib/test_util.c')
-rw-r--r--tools/testing/selftests/kvm/lib/test_util.c25
1 files changed, 25 insertions, 0 deletions
diff --git a/tools/testing/selftests/kvm/lib/test_util.c b/tools/testing/selftests/kvm/lib/test_util.c
index 5d7f28b02d73..5a8f8becb129 100644
--- a/tools/testing/selftests/kvm/lib/test_util.c
+++ b/tools/testing/selftests/kvm/lib/test_util.c
@@ -392,3 +392,28 @@ char *strdup_printf(const char *fmt, ...)
return str;
}
+
+#define CLOCKSOURCE_PATH "/sys/devices/system/clocksource/clocksource0/current_clocksource"
+
+char *sys_get_cur_clocksource(void)
+{
+ char *clk_name;
+ struct stat st;
+ FILE *fp;
+
+ fp = fopen(CLOCKSOURCE_PATH, "r");
+ TEST_ASSERT(fp, "failed to open clocksource file, errno: %d", errno);
+
+ TEST_ASSERT(!fstat(fileno(fp), &st), "failed to stat clocksource file, errno: %d",
+ errno);
+
+ clk_name = malloc(st.st_size);
+ TEST_ASSERT(clk_name, "failed to allocate buffer to read file");
+
+ TEST_ASSERT(fgets(clk_name, st.st_size, fp), "failed to read clocksource file: %d",
+ ferror(fp));
+
+ fclose(fp);
+
+ return clk_name;
+}