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-rw-r--r--tools/testing/selftests/resctrl/resctrl.h2
-rw-r--r--tools/testing/selftests/resctrl/resctrlfs.c2
2 files changed, 2 insertions, 2 deletions
diff --git a/tools/testing/selftests/resctrl/resctrl.h b/tools/testing/selftests/resctrl/resctrl.h
index 89cd89507891..9e5777e1eee3 100644
--- a/tools/testing/selftests/resctrl/resctrl.h
+++ b/tools/testing/selftests/resctrl/resctrl.h
@@ -99,7 +99,7 @@ void mbm_test_cleanup(void);
int mba_schemata_change(int cpu_no, const char * const *benchmark_cmd);
void mba_test_cleanup(void);
int get_full_cbm(const char *cache_type, unsigned long *mask);
-int get_cache_size(int cpu_no, char *cache_type, unsigned long *cache_size);
+int get_cache_size(int cpu_no, const char *cache_type, unsigned long *cache_size);
void ctrlc_handler(int signum, siginfo_t *info, void *ptr);
int signal_handler_register(void);
void signal_handler_unregister(void);
diff --git a/tools/testing/selftests/resctrl/resctrlfs.c b/tools/testing/selftests/resctrl/resctrlfs.c
index a74be17eaa4e..1bbeb4dccf05 100644
--- a/tools/testing/selftests/resctrl/resctrlfs.c
+++ b/tools/testing/selftests/resctrl/resctrlfs.c
@@ -138,7 +138,7 @@ int get_resource_id(int cpu_no, int *resource_id)
*
* Return: = 0 on success, < 0 on failure.
*/
-int get_cache_size(int cpu_no, char *cache_type, unsigned long *cache_size)
+int get_cache_size(int cpu_no, const char *cache_type, unsigned long *cache_size)
{
char cache_path[1024], cache_str[64];
int length, i, cache_num;