Reinette reported following compilation issue on Fedora 32, gcc version 10.1.1
/usr/bin/ld: resctrl_tests.o:<src_dir>/resctrl.h:65: multiple definition of `bm_pid'; cache.o:<src_dir>/resctrl.h:65: first defined here
Other variables are ppid, tests_run, llc_occup_path, is_amd. Compiler isn't happy because these variables are defined globally in two .c files but are not declared as extern.
To fix issues for the global variables, declare them as extern.
Chang Log: - Split this patch from v4's patch 1 (Shuah).
Reported-by: Reinette Chatre reinette.chatre@intel.com Signed-off-by: Fenghua Yu fenghua.yu@intel.com --- tools/testing/selftests/resctrl/resctrl.h | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/tools/testing/selftests/resctrl/resctrl.h b/tools/testing/selftests/resctrl/resctrl.h index 959c71e39bdc..12b77182cb44 100644 --- a/tools/testing/selftests/resctrl/resctrl.h +++ b/tools/testing/selftests/resctrl/resctrl.h @@ -62,11 +62,11 @@ struct resctrl_val_param { int (*setup)(int num, ...); };
-pid_t bm_pid, ppid; -int tests_run; +extern pid_t bm_pid, ppid; +extern int tests_run;
-char llc_occup_path[1024]; -bool is_amd; +extern char llc_occup_path[1024]; +extern bool is_amd;
bool check_resctrlfs_support(void); int filter_dmesg(void);