The struct resctrl_val_param has control and monitor groups as char arrays but they are not supposed to be mutated within resctrl_val().
Convert the ctrlgrp and mongrp char array within resctrl_val_param to plain const char pointers and adjust the strlen() based checks to check NULL instead.
Signed-off-by: Ilpo Järvinen ilpo.jarvinen@linux.intel.com --- tools/testing/selftests/resctrl/resctrl.h | 4 ++-- tools/testing/selftests/resctrl/resctrlfs.c | 8 ++++---- 2 files changed, 6 insertions(+), 6 deletions(-)
diff --git a/tools/testing/selftests/resctrl/resctrl.h b/tools/testing/selftests/resctrl/resctrl.h index 3ccca8556aa7..f6a77139d1c0 100644 --- a/tools/testing/selftests/resctrl/resctrl.h +++ b/tools/testing/selftests/resctrl/resctrl.h @@ -86,8 +86,8 @@ struct resctrl_test { */ struct resctrl_val_param { char *resctrl_val; - char ctrlgrp[64]; - char mongrp[64]; + const char *ctrlgrp; + const char *mongrp; char filename[64]; unsigned long mask; int num_of_runs; diff --git a/tools/testing/selftests/resctrl/resctrlfs.c b/tools/testing/selftests/resctrl/resctrlfs.c index e01044194ddd..597150e4056e 100644 --- a/tools/testing/selftests/resctrl/resctrlfs.c +++ b/tools/testing/selftests/resctrl/resctrlfs.c @@ -433,7 +433,7 @@ static int create_grp(const char *grp_name, char *grp, const char *parent_grp) * length of grp_name == 0, it means, user wants to use root con_mon * grp, so do nothing */ - if (strlen(grp_name) == 0) + if (!grp_name) return 0;
/* Check if requested grp exists or not */ @@ -505,7 +505,7 @@ int write_bm_pid_to_resctrl(pid_t bm_pid, const char *ctrlgrp, char tasks[1024]; int ret = 0;
- if (strlen(ctrlgrp)) + if (ctrlgrp) sprintf(controlgroup, "%s/%s", RESCTRL_PATH, ctrlgrp); else sprintf(controlgroup, "%s", RESCTRL_PATH); @@ -522,7 +522,7 @@ int write_bm_pid_to_resctrl(pid_t bm_pid, const char *ctrlgrp, /* Create mon grp and write pid into it for "mbm" and "cmt" test */ if (!strncmp(resctrl_val, CMT_STR, sizeof(CMT_STR)) || !strncmp(resctrl_val, MBM_STR, sizeof(MBM_STR))) { - if (strlen(mongrp)) { + if (mongrp) { sprintf(monitorgroup_p, "%s/mon_groups", controlgroup); sprintf(monitorgroup, "%s/%s", monitorgroup_p, mongrp); ret = create_grp(mongrp, monitorgroup, monitorgroup_p); @@ -576,7 +576,7 @@ int write_schemata(const char *ctrlgrp, char *schemata, int cpu_no, goto out; }
- if (strlen(ctrlgrp) != 0) + if (ctrlgrp) sprintf(controlgroup, "%s/%s/schemata", RESCTRL_PATH, ctrlgrp); else sprintf(controlgroup, "%s/schemata", RESCTRL_PATH);