1 files changed, 3 insertions, 2 deletions

diff --git a/Documentation/prctl/disable-tsc-test.c b/Documentation/prctl/disable-tsc-test.c
index 843c81eac235..2541e65cb64b 100644
--- a/Documentation/prctl/disable-tsc-test.c
+++ b/Documentation/prctl/disable-tsc-test.c
@@ -29,14 +29,15 @@ const char *tsc_names[] =
         [PR_TSC_SIGSEGV] = "PR_TSC_SIGSEGV",
 };
 
-uint64_t rdtsc() {
+static uint64_t rdtsc(void)
+{
 uint32_t lo, hi;
 /* We cannot use "=A", since this would use %rax on x86_64 */
 __asm__ __volatile__ ("rdtsc" : "=a" (lo), "=d" (hi));
 return (uint64_t)hi << 32 | lo;
 }
 
-void sigsegv_cb(int sig)
+static void sigsegv_cb(int sig)
 {
         int tsc_val = 0;