initialize_mem_bw_resctrl() and set_mbm_path() contain complicated set of conditions, each yielding different file to be opened to measure memory bandwidth through resctrl FS. In practice, only two of them are used. For MBA test, ctrlgrp is always provided, and for MBM test both ctrlgrp and mongrp are set.
The file used differ between MBA/MBM test, however, MBM test unnecessarily create monitor group because resctrl FS already provides monitoring interface underneath any ctrlgrp too, which is what the MBA selftest uses.
Consolidate memory bandwidth file used to the one used by the MBA selftest. Remove all unused branches opening other files to simplify the code.
Suggested-by: Reinette Chatre reinette.chatre@intel.com Signed-off-by: Ilpo Järvinen ilpo.jarvinen@linux.intel.com Tested-by: Babu Moger babu.moger@amd.com Reviewed-by: Reinette Chatre reinette.chatre@intel.com ---
v4: - Remove also MBM .mongrp setup v3: - New patch --- tools/testing/selftests/resctrl/mbm_test.c | 1 - tools/testing/selftests/resctrl/resctrl_val.c | 45 ++----------------- 2 files changed, 4 insertions(+), 42 deletions(-)
diff --git a/tools/testing/selftests/resctrl/mbm_test.c b/tools/testing/selftests/resctrl/mbm_test.c index 3059ccc51a5a..96d279b06377 100644 --- a/tools/testing/selftests/resctrl/mbm_test.c +++ b/tools/testing/selftests/resctrl/mbm_test.c @@ -115,7 +115,6 @@ static int mbm_run_test(const struct resctrl_test *test, const struct user_param struct resctrl_val_param param = { .resctrl_val = MBM_STR, .ctrlgrp = "c1", - .mongrp = "m1", .filename = RESULT_FILE_NAME, .bw_report = "reads", .setup = mbm_setup diff --git a/tools/testing/selftests/resctrl/resctrl_val.c b/tools/testing/selftests/resctrl/resctrl_val.c index 7eaf3cd0f024..9d6982be3b68 100644 --- a/tools/testing/selftests/resctrl/resctrl_val.c +++ b/tools/testing/selftests/resctrl/resctrl_val.c @@ -19,18 +19,10 @@ #define MAX_TOKENS 5 #define READ 0 #define WRITE 1 -#define CON_MON_MBM_LOCAL_BYTES_PATH \ - "%s/%s/mon_groups/%s/mon_data/mon_L3_%02d/mbm_local_bytes"
#define CON_MBM_LOCAL_BYTES_PATH \ "%s/%s/mon_data/mon_L3_%02d/mbm_local_bytes"
-#define MON_MBM_LOCAL_BYTES_PATH \ - "%s/mon_groups/%s/mon_data/mon_L3_%02d/mbm_local_bytes" - -#define MBM_LOCAL_BYTES_PATH \ - "%s/mon_data/mon_L3_%02d/mbm_local_bytes" - #define CON_MON_LCC_OCCUP_PATH \ "%s/%s/mon_groups/%s/mon_data/mon_L3_%02d/llc_occupancy"
@@ -430,43 +422,15 @@ static int get_mem_bw_imc(char *bw_report, float *bw_imc) return 0; }
-void set_mbm_path(const char *ctrlgrp, const char *mongrp, int domain_id) -{ - if (ctrlgrp && mongrp) - sprintf(mbm_total_path, CON_MON_MBM_LOCAL_BYTES_PATH, - RESCTRL_PATH, ctrlgrp, mongrp, domain_id); - else if (!ctrlgrp && mongrp) - sprintf(mbm_total_path, MON_MBM_LOCAL_BYTES_PATH, RESCTRL_PATH, - mongrp, domain_id); - else if (ctrlgrp && !mongrp) - sprintf(mbm_total_path, CON_MBM_LOCAL_BYTES_PATH, RESCTRL_PATH, - ctrlgrp, domain_id); - else if (!ctrlgrp && !mongrp) - sprintf(mbm_total_path, MBM_LOCAL_BYTES_PATH, RESCTRL_PATH, - domain_id); -} - /* * initialize_mem_bw_resctrl: Appropriately populate "mbm_total_path" * @ctrlgrp: Name of the control monitor group (con_mon grp) - * @mongrp: Name of the monitor group (mon grp) * @domain_id: Domain ID (cache ID; for MB, L3 cache ID) - * @resctrl_val: Resctrl feature (Eg: mbm, mba.. etc) */ -static void initialize_mem_bw_resctrl(const char *ctrlgrp, const char *mongrp, - int domain_id, char *resctrl_val) +static void initialize_mem_bw_resctrl(const char *ctrlgrp, int domain_id) { - if (!strncmp(resctrl_val, MBM_STR, sizeof(MBM_STR))) - set_mbm_path(ctrlgrp, mongrp, domain_id); - - if (!strncmp(resctrl_val, MBA_STR, sizeof(MBA_STR))) { - if (ctrlgrp) - sprintf(mbm_total_path, CON_MBM_LOCAL_BYTES_PATH, - RESCTRL_PATH, ctrlgrp, domain_id); - else - sprintf(mbm_total_path, MBM_LOCAL_BYTES_PATH, - RESCTRL_PATH, domain_id); - } + sprintf(mbm_total_path, CON_MBM_LOCAL_BYTES_PATH, RESCTRL_PATH, + ctrlgrp, domain_id); }
/* @@ -867,8 +831,7 @@ int resctrl_val(const struct resctrl_test *test, if (ret) goto out;
- initialize_mem_bw_resctrl(param->ctrlgrp, param->mongrp, - domain_id, resctrl_val); + initialize_mem_bw_resctrl(param->ctrlgrp, domain_id); } else if (!strncmp(resctrl_val, CMT_STR, sizeof(CMT_STR))) initialize_llc_occu_resctrl(param->ctrlgrp, param->mongrp, domain_id, resctrl_val);