The struct resctrl_val_param is there to customize behavior inside resctrl_val() which is currently not used to full extent and there are number of strcmp()s for test name in resctrl_val done by resctrl_val().
Create ->init() hook into the struct resctrl_val_param to cleanly do per test initialization.
Remove also unused branches to setup paths and the related #defines.
Signed-off-by: Ilpo Järvinen ilpo.jarvinen@linux.intel.com --- tools/testing/selftests/resctrl/cmt_test.c | 12 ++ tools/testing/selftests/resctrl/mba_test.c | 24 +++- tools/testing/selftests/resctrl/mbm_test.c | 24 +++- tools/testing/selftests/resctrl/resctrl.h | 9 +- tools/testing/selftests/resctrl/resctrl_val.c | 123 ++---------------- 5 files changed, 75 insertions(+), 117 deletions(-)
diff --git a/tools/testing/selftests/resctrl/cmt_test.c b/tools/testing/selftests/resctrl/cmt_test.c index 241c0b129b58..e79eca9346f3 100644 --- a/tools/testing/selftests/resctrl/cmt_test.c +++ b/tools/testing/selftests/resctrl/cmt_test.c @@ -16,6 +16,17 @@ #define MAX_DIFF 2000000 #define MAX_DIFF_PERCENT 15
+#define CON_MON_LCC_OCCUP_PATH \ + "%s/%s/mon_groups/%s/mon_data/mon_L3_%02d/llc_occupancy" + +static int set_cmt_path(const struct resctrl_val_param *param, int domain_id) +{ + sprintf(llc_occup_path, CON_MON_LCC_OCCUP_PATH, RESCTRL_PATH, + param->ctrlgrp, param->mongrp, domain_id); + + return 0; +} + static int cmt_setup(const struct resctrl_test *test, const struct user_params *uparams, struct resctrl_val_param *p) @@ -139,6 +150,7 @@ static int cmt_run_test(const struct resctrl_test *test, const struct user_param .filename = RESULT_FILE_NAME, .mask = ~(long_mask << n) & long_mask, .num_of_runs = 0, + .init = set_cmt_path, .setup = cmt_setup, .measure = cmt_measure, }; diff --git a/tools/testing/selftests/resctrl/mba_test.c b/tools/testing/selftests/resctrl/mba_test.c index 0939f86514f7..22c1f5e43352 100644 --- a/tools/testing/selftests/resctrl/mba_test.c +++ b/tools/testing/selftests/resctrl/mba_test.c @@ -8,6 +8,8 @@ * Sai Praneeth Prakhya sai.praneeth.prakhya@intel.com, * Fenghua Yu fenghua.yu@intel.com */ +#include <limits.h> + #include "resctrl.h"
#define RESULT_FILE_NAME "result_mba" @@ -17,6 +19,25 @@ #define ALLOCATION_MIN 10 #define ALLOCATION_STEP 10
+#define CON_MBM_LOCAL_BYTES_PATH \ + "%s/%s/mon_data/mon_L3_%02d/mbm_local_bytes" + +static char mbm_total_path[PATH_MAX]; + +static int set_mba_path(const struct resctrl_val_param *param, int domain_id) +{ + int ret; + + ret = initialize_mem_bw_imc(); + if (ret) + return ret; + + sprintf(mbm_total_path, CON_MBM_LOCAL_BYTES_PATH, + RESCTRL_PATH, param->ctrlgrp, domain_id); + + return 0; +} + /* * Change schemata percentage from 100 to 10%. Write schemata to specified * con_mon grp, mon_grp in resctrl FS. @@ -54,7 +75,7 @@ static int mba_setup(const struct resctrl_test *test, static int mba_measure(const struct user_params *uparams, struct resctrl_val_param *param, pid_t bm_pid) { - return measure_mem_bw(uparams, param, bm_pid); + return measure_mem_bw(uparams, param, bm_pid, mbm_total_path); }
static bool show_mba_info(unsigned long *bw_imc, unsigned long *bw_resc) @@ -156,6 +177,7 @@ static int mba_run_test(const struct resctrl_test *test, const struct user_param .mongrp = "m1", .filename = RESULT_FILE_NAME, .bw_report = "reads", + .init = set_mba_path, .setup = mba_setup, .measure = mba_measure, }; diff --git a/tools/testing/selftests/resctrl/mbm_test.c b/tools/testing/selftests/resctrl/mbm_test.c index 17398cd3aace..ffbfcecf9bd6 100644 --- a/tools/testing/selftests/resctrl/mbm_test.c +++ b/tools/testing/selftests/resctrl/mbm_test.c @@ -8,12 +8,19 @@ * Sai Praneeth Prakhya sai.praneeth.prakhya@intel.com, * Fenghua Yu fenghua.yu@intel.com */ +#include <limits.h> + #include "resctrl.h"
#define RESULT_FILE_NAME "result_mbm" #define MAX_DIFF_PERCENT 8 #define NUM_OF_RUNS 5
+#define CON_MON_MBM_LOCAL_BYTES_PATH \ + "%s/%s/mon_groups/%s/mon_data/mon_L3_%02d/mbm_local_bytes" + +static char mbm_total_path[PATH_MAX]; + static int show_bw_info(unsigned long *bw_imc, unsigned long *bw_resc, size_t span) { @@ -86,6 +93,20 @@ static int check_results(size_t span) return ret; }
+static int set_mbm_path(const struct resctrl_val_param *param, int domain_id) +{ + int ret; + + ret = initialize_mem_bw_imc(); + if (ret) + return ret; + + sprintf(mbm_total_path, CON_MON_MBM_LOCAL_BYTES_PATH, + RESCTRL_PATH, param->ctrlgrp, param->mongrp, domain_id); + + return 0; +} + static int mbm_setup(const struct resctrl_test *test, const struct user_params *uparams, struct resctrl_val_param *p) @@ -108,7 +129,7 @@ static int mbm_setup(const struct resctrl_test *test, static int mbm_measure(const struct user_params *uparams, struct resctrl_val_param *param, pid_t bm_pid) { - return measure_mem_bw(uparams, param, bm_pid); + return measure_mem_bw(uparams, param, bm_pid, mbm_total_path); }
void mbm_test_cleanup(void) @@ -124,6 +145,7 @@ static int mbm_run_test(const struct resctrl_test *test, const struct user_param .mongrp = "m1", .filename = RESULT_FILE_NAME, .bw_report = "reads", + .init = set_mbm_path, .setup = mbm_setup, .measure = mbm_measure, }; diff --git a/tools/testing/selftests/resctrl/resctrl.h b/tools/testing/selftests/resctrl/resctrl.h index 2da642e11b61..d9c6443a8524 100644 --- a/tools/testing/selftests/resctrl/resctrl.h +++ b/tools/testing/selftests/resctrl/resctrl.h @@ -84,7 +84,8 @@ struct resctrl_test { * @mongrp: Name of the monitor group (mon grp) * @filename: Name of file to which the o/p should be written * @bw_report: Bandwidth report type (reads vs writes) - * @setup: Call back function to setup test environment + * @init: Callback function to initialize test environment + * @setup: Callback function to setup per test run environment * @measure: Callback that performs the measurement (a single test) */ struct resctrl_val_param { @@ -95,6 +96,8 @@ struct resctrl_val_param { char *bw_report; unsigned long mask; int num_of_runs; + int (*init)(const struct resctrl_val_param *param, + int domain_id); int (*setup)(const struct resctrl_test *test, const struct user_params *uparams, struct resctrl_val_param *param); @@ -147,8 +150,10 @@ unsigned char *alloc_buffer(size_t buf_size, int memflush); void mem_flush(unsigned char *buf, size_t buf_size); void fill_cache_read(unsigned char *buf, size_t buf_size, bool once); int run_fill_buf(size_t buf_size, int memflush, int op, bool once); +int initialize_mem_bw_imc(void); int measure_mem_bw(const struct user_params *uparams, - struct resctrl_val_param *param, pid_t bm_pid); + struct resctrl_val_param *param, + pid_t bm_pid, const char *mbm_total_path); int resctrl_val(const struct resctrl_test *test, const struct user_params *uparams, const char * const *benchmark_cmd, diff --git a/tools/testing/selftests/resctrl/resctrl_val.c b/tools/testing/selftests/resctrl/resctrl_val.c index 13d89d24474e..1a96298592ed 100644 --- a/tools/testing/selftests/resctrl/resctrl_val.c +++ b/tools/testing/selftests/resctrl/resctrl_val.c @@ -19,29 +19,6 @@ #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" - -#define CON_LCC_OCCUP_PATH \ - "%s/%s/mon_data/mon_L3_%02d/llc_occupancy" - -#define MON_LCC_OCCUP_PATH \ - "%s/mon_groups/%s/mon_data/mon_L3_%02d/llc_occupancy" - -#define LCC_OCCUP_PATH \ - "%s/mon_data/mon_L3_%02d/llc_occupancy"
struct membw_read_format { __u64 value; /* The value of the event */ @@ -59,7 +36,6 @@ struct imc_counter_config { int fd; };
-static char mbm_total_path[1024]; static int imcs; static struct imc_counter_config imc_counters_config[MAX_IMCS][2];
@@ -275,7 +251,7 @@ static int num_of_imcs(void) return count; }
-static int initialize_mem_bw_imc(void) +int initialize_mem_bw_imc(void) { int imc, j;
@@ -411,56 +387,10 @@ 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) -{ - 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); - } -} - /* * Get MBM Local bytes as reported by resctrl FS - * For MBM, - * 1. If con_mon grp and mon grp are given, then read from con_mon grp's mon grp - * 2. If only con_mon grp is given, then read from con_mon grp - * 3. If both are not given, then read from root con_mon grp - * For MBA, - * 1. If con_mon grp is given, then read from it - * 2. If con_mon grp is not given, then read from root con_mon grp */ -static int get_mem_bw_resctrl(unsigned long *mbm_total) +static int get_mem_bw_resctrl(const char *mbm_total_path, unsigned long *mbm_total) { FILE *fp;
@@ -581,43 +511,16 @@ static int print_results_bw(char *filename, pid_t bm_pid, float bw_imc, return 0; }
-static void set_cmt_path(const char *ctrlgrp, const char *mongrp, char sock_num) -{ - if (strlen(ctrlgrp) && strlen(mongrp)) - sprintf(llc_occup_path, CON_MON_LCC_OCCUP_PATH, RESCTRL_PATH, - ctrlgrp, mongrp, sock_num); - else if (!strlen(ctrlgrp) && strlen(mongrp)) - sprintf(llc_occup_path, MON_LCC_OCCUP_PATH, RESCTRL_PATH, - mongrp, sock_num); - else if (strlen(ctrlgrp) && !strlen(mongrp)) - sprintf(llc_occup_path, CON_LCC_OCCUP_PATH, RESCTRL_PATH, - ctrlgrp, sock_num); - else if (!strlen(ctrlgrp) && !strlen(mongrp)) - sprintf(llc_occup_path, LCC_OCCUP_PATH, RESCTRL_PATH, sock_num); -} - -/* - * initialize_llc_occu_resctrl: Appropriately populate "llc_occup_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: cat, cmt.. etc) - */ -static void initialize_llc_occu_resctrl(const char *ctrlgrp, const char *mongrp, - int domain_id, char *resctrl_val) -{ - if (!strncmp(resctrl_val, CMT_STR, sizeof(CMT_STR))) - set_cmt_path(ctrlgrp, mongrp, domain_id); -} - /* * measure_mem_bw - Measures memory bandwidth numbers while benchmark runs * @uparams: User supplied parameters * @param: parameters passed to resctrl_val() * @bm_pid: PID that runs the benchmark + * @mbm_total_path: Resctrl FS monitoring file to read mem BW from */ int measure_mem_bw(const struct user_params *uparams, - struct resctrl_val_param *param, pid_t bm_pid) + struct resctrl_val_param *param, + pid_t bm_pid, const char *mbm_total_path) { unsigned long bw_resc, bw_resc_start, bw_resc_end; float bw_imc; @@ -634,13 +537,13 @@ int measure_mem_bw(const struct user_params *uparams, if (ret < 0) return ret;
- ret = get_mem_bw_resctrl(&bw_resc_start); + ret = get_mem_bw_resctrl(mbm_total_path, &bw_resc_start); if (ret < 0) return ret;
do_imc_mem_bw_test();
- ret = get_mem_bw_resctrl(&bw_resc_end); + ret = get_mem_bw_resctrl(mbm_total_path, &bw_resc_end); if (ret < 0) return ret;
@@ -826,17 +729,11 @@ int resctrl_val(const struct resctrl_test *test, if (ret) goto out;
- if (!strncmp(resctrl_val, MBM_STR, sizeof(MBM_STR)) || - !strncmp(resctrl_val, MBA_STR, sizeof(MBA_STR))) { - ret = initialize_mem_bw_imc(); + if (param->init) { + ret = param->init(param, domain_id); if (ret) goto out; - - initialize_mem_bw_resctrl(param->ctrlgrp, param->mongrp, - domain_id, resctrl_val); - } else if (!strncmp(resctrl_val, CMT_STR, sizeof(CMT_STR))) - initialize_llc_occu_resctrl(param->ctrlgrp, param->mongrp, - domain_id, resctrl_val); + }
/* Parent waits for child to be ready. */ close(pipefd[1]);