> -----Original Message-----
> From: Fenghua Yu <fenghua.yu@xxxxxxxxx>
> Sent: Sunday, March 7, 2021 8:55 AM
> To: Shuah Khan <shuah@xxxxxxxxxx>; Tony Luck <tony.luck@xxxxxxxxx>;
> Reinette Chatre <reinette.chatre@xxxxxxxxx>; Moger, Babu
> <Babu.Moger@xxxxxxx>
> Cc: linux-kselftest <linux-kselftest@xxxxxxxxxxxxxxx>; linux-kernel <linux-
> kernel@xxxxxxxxxxxxxxx>; Fenghua Yu <fenghua.yu@xxxxxxxxx>
> Subject: [PATCH v5 08/21] selftests/resctrl: Call kselftest APIs to log test results
>
> Call kselftest APIs instead of using printf() to log test results
> for cleaner code and better future extension.
>
> Suggested-by: Shuah Khan <shuah@xxxxxxxxxx>
> Signed-off-by: Fenghua Yu <fenghua.yu@xxxxxxxxx>
> ---
> Change Log:
> v5:
> - Add this patch (Shuah)
>
> tools/testing/selftests/resctrl/cat_test.c | 37 +++++++--------
> tools/testing/selftests/resctrl/cmt_test.c | 42 ++++++++---------
> tools/testing/selftests/resctrl/mba_test.c | 24 +++++-----
> tools/testing/selftests/resctrl/mbm_test.c | 28 ++++++------
> tools/testing/selftests/resctrl/resctrl.h | 2 +-
> .../testing/selftests/resctrl/resctrl_tests.c | 40 +++++++++--------
> tools/testing/selftests/resctrl/resctrl_val.c | 4 +-
> tools/testing/selftests/resctrl/resctrlfs.c | 45 +++++++------------
> 8 files changed, 105 insertions(+), 117 deletions(-)
>
> diff --git a/tools/testing/selftests/resctrl/cat_test.c
> b/tools/testing/selftests/resctrl/cat_test.c
> index 20823725daca..0deb38ed971b 100644
> --- a/tools/testing/selftests/resctrl/cat_test.c
> +++ b/tools/testing/selftests/resctrl/cat_test.c
> @@ -52,25 +52,28 @@ static int cat_setup(int num, ...)
> return ret;
> }
>
> -static void show_cache_info(unsigned long sum_llc_perf_miss, int no_of_bits,
> - unsigned long span)
> +static int show_cache_info(unsigned long sum_llc_perf_miss, int no_of_bits,
> + unsigned long span)
> {
> unsigned long allocated_cache_lines = span / 64;
> unsigned long avg_llc_perf_miss = 0;
> float diff_percent;
> + int ret;
>
> avg_llc_perf_miss = sum_llc_perf_miss / (NUM_OF_RUNS - 1);
> diff_percent = ((float)allocated_cache_lines - avg_llc_perf_miss) /
> allocated_cache_lines * 100;
>
> - printf("%sok CAT: cache miss rate within %d%%\n",
> - !is_amd && abs((int)diff_percent) > MAX_DIFF_PERCENT ?
> - "not " : "", MAX_DIFF_PERCENT);
> - tests_run++;
> - printf("# Percent diff=%d\n", abs((int)diff_percent));
> - printf("# Number of bits: %d\n", no_of_bits);
> - printf("# Avg_llc_perf_miss: %lu\n", avg_llc_perf_miss);
> - printf("# Allocated cache lines: %lu\n", allocated_cache_lines);
> + ret = !is_amd && abs((int)diff_percent) > MAX_DIFF_PERCENT;
> + ksft_print_msg("cache miss rate %swithin %d%%\n",
> + ret ? "not " : "", MAX_DIFF_PERCENT);
> +
> + ksft_print_msg("Percent diff=%d\n", abs((int)diff_percent));
> + ksft_print_msg("Number of bits: %d\n", no_of_bits);
> + ksft_print_msg("Avg_llc_perf_miss: %lu\n", avg_llc_perf_miss);
> + ksft_print_msg("Allocated cache lines: %lu\n", allocated_cache_lines);
> +
> + return ret;
> }
>
> static int check_results(struct resctrl_val_param *param)
> @@ -80,7 +83,7 @@ static int check_results(struct resctrl_val_param *param)
> int runs = 0, no_of_bits = 0;
> FILE *fp;
>
> - printf("# Checking for pass/fail\n");
> + ksft_print_msg("Checking for pass/fail\n");
> fp = fopen(param->filename, "r");
> if (!fp) {
> perror("# Cannot open file");
> @@ -108,9 +111,7 @@ static int check_results(struct resctrl_val_param
> *param)
> fclose(fp);
> no_of_bits = count_bits(param->mask);
>
> - show_cache_info(sum_llc_perf_miss, no_of_bits, param->span);
> -
> - return 0;
> + return show_cache_info(sum_llc_perf_miss, no_of_bits, param->span);
> }
>
> void cat_test_cleanup(void)
> @@ -146,15 +147,15 @@ int cat_perf_miss_val(int cpu_no, int n, char
> *cache_type)
> ret = get_cache_size(cpu_no, cache_type, &cache_size);
> if (ret)
> return ret;
> - printf("cache size :%lu\n", cache_size);
> + ksft_print_msg("cache size :%lu\n", cache_size);
>
> /* Get max number of bits from default-cabm mask */
> count_of_bits = count_bits(long_mask);
>
> if (n < 1 || n > count_of_bits - 1) {
> - printf("Invalid input value for no_of_bits n!\n");
> - printf("Please Enter value in range 1 to %d\n",
> - count_of_bits - 1);
> + ksft_print_msg("Invalid input value for no_of_bits n!\n");
> + ksft_print_msg("Please Enter value in range 1 to %d\n",
> + count_of_bits - 1);
> return -1;
> }
>
> diff --git a/tools/testing/selftests/resctrl/cmt_test.c
> b/tools/testing/selftests/resctrl/cmt_test.c
> index ca82db37c1f7..e5af19335115 100644
> --- a/tools/testing/selftests/resctrl/cmt_test.c
> +++ b/tools/testing/selftests/resctrl/cmt_test.c
> @@ -39,36 +39,33 @@ static int cmt_setup(int num, ...)
> return 0;
> }
>
> -static void show_cache_info(unsigned long sum_llc_occu_resc, int no_of_bits,
> - unsigned long span)
> +static int show_cache_info(unsigned long sum_llc_occu_resc, int no_of_bits,
> + unsigned long span)
> {
> unsigned long avg_llc_occu_resc = 0;
> float diff_percent;
> long avg_diff = 0;
> - bool res;
> + int ret;
>
> avg_llc_occu_resc = sum_llc_occu_resc / (NUM_OF_RUNS - 1);
> avg_diff = (long)abs(span - avg_llc_occu_resc);
>
> diff_percent = (((float)span - avg_llc_occu_resc) / span) * 100;
>
> - if ((abs((int)diff_percent) <= MAX_DIFF_PERCENT) ||
> - (abs(avg_diff) <= MAX_DIFF))
> - res = true;
> - else
> - res = false;
> + ret = (abs((int)diff_percent) > MAX_DIFF_PERCENT) &&
> + (abs(avg_diff) > MAX_DIFF);
>
> - printf("%sok CMT: diff within %d, %d\%%\n", res ? "" : "not",
> - MAX_DIFF, (int)MAX_DIFF_PERCENT);
> + ksft_print_msg("%scache miss diff within %d, %d\%%\n",
> + ret ? "fail: " : "not", MAX_DIFF, (int)MAX_DIFF_PERCENT);
>
> - printf("# diff: %ld\n", avg_diff);
> - printf("# percent diff=%d\n", abs((int)diff_percent));
> - printf("# Results are displayed in (Bytes)\n");
> - printf("# Number of bits: %d\n", no_of_bits);
> - printf("# Avg_llc_occu_resc: %lu\n", avg_llc_occu_resc);
> - printf("# llc_occu_exp (span): %lu\n", span);
> + ksft_print_msg("diff: %ld\n", avg_diff);
> + ksft_print_msg("percent diff=%d\n", abs((int)diff_percent));
> + ksft_print_msg("Results are displayed in (Bytes)\n");
> + ksft_print_msg("Number of bits: %d\n", no_of_bits);
> + ksft_print_msg("Avg_llc_occu_resc: %lu\n", avg_llc_occu_resc);
> + ksft_print_msg("llc_occu_exp (span): %lu\n", span);
>
> - tests_run++;
> + return ret;
> }
>
> static int check_results(struct resctrl_val_param *param, int no_of_bits)
> @@ -78,7 +75,7 @@ static int check_results(struct resctrl_val_param *param,
> int no_of_bits)
> int runs = 0;
> FILE *fp;
>
> - printf("# checking for pass/fail\n");
> + ksft_print_msg("checking for pass/fail\n");
> fp = fopen(param->filename, "r");
> if (!fp) {
> perror("# Error in opening file\n");
> @@ -101,9 +98,8 @@ static int check_results(struct resctrl_val_param *param,
> int no_of_bits)
> runs++;
> }
> fclose(fp);
> - show_cache_info(sum_llc_occu_resc, no_of_bits, param->span);
>
> - return 0;
> + return show_cache_info(sum_llc_occu_resc, no_of_bits, param->span);
> }
>
> void cmt_test_cleanup(void)
> @@ -134,13 +130,13 @@ int cmt_resctrl_val(int cpu_no, int n, char
> **benchmark_cmd)
> ret = get_cache_size(cpu_no, "L3", &cache_size);
> if (ret)
> return ret;
> - printf("cache size :%lu\n", cache_size);
> + ksft_print_msg("cache size :%lu\n", cache_size);
>
> count_of_bits = count_bits(long_mask);
>
> if (n < 1 || n > count_of_bits) {
> - printf("Invalid input value for numbr_of_bits n!\n");
> - printf("Please Enter value in range 1 to %d\n", count_of_bits);
> + ksft_print_msg("Invalid input value for numbr_of_bits n!\n");
> + ksft_print_msg("Please Enter value in range 1 to %d\n",
> count_of_bits);
> return -1;
> }
>
> diff --git a/tools/testing/selftests/resctrl/mba_test.c
> b/tools/testing/selftests/resctrl/mba_test.c
> index 6449fbd96096..3a226effe80c 100644
> --- a/tools/testing/selftests/resctrl/mba_test.c
> +++ b/tools/testing/selftests/resctrl/mba_test.c
> @@ -56,7 +56,7 @@ static void show_mba_info(unsigned long *bw_imc,
> unsigned long *bw_resc)
> int allocation, runs;
> bool failed = false;
>
> - printf("# Results are displayed in (MB)\n");
> + ksft_print_msg("Results are displayed in (MB)\n");
> /* Memory bandwidth from 100% down to 10% */
> for (allocation = 0; allocation < ALLOCATION_MAX / ALLOCATION_STEP;
> allocation++) {
> @@ -78,21 +78,21 @@ static void show_mba_info(unsigned long *bw_imc,
> unsigned long *bw_resc)
> avg_bw_resc = sum_bw_resc / (NUM_OF_RUNS - 1);
> avg_diff = labs((long)(avg_bw_resc - avg_bw_imc));
>
> - printf("%sok MBA schemata percentage %u smaller than %d
> %%\n",
> - avg_diff > MAX_DIFF ? "not " : "",
> - ALLOCATION_MAX - ALLOCATION_STEP * allocation,
> - MAX_DIFF);
> - tests_run++;
> - printf("# avg_diff: %lu\n", avg_diff);
> - printf("# avg_bw_imc: %lu\n", avg_bw_imc);
> - printf("# avg_bw_resc: %lu\n", avg_bw_resc);
> + ksft_print_msg("%s MBA schemata percentage %u smaller than
> %d %%\n",
> + avg_diff > MAX_DIFF ? "fail:" : "pass:",
> + ALLOCATION_MAX - ALLOCATION_STEP *
> allocation,
> + MAX_DIFF);
> + ksft_print_msg("avg_diff: %lu\n", avg_diff);
> + ksft_print_msg("avg_bw_imc: %lu\n", avg_bw_imc);
> + ksft_print_msg("avg_bw_resc: %lu\n", avg_bw_resc);
> if (avg_diff > MAX_DIFF)
> failed = true;
> }
>
> - printf("%sok schemata change using MBA%s\n", failed ? "not " : "",
> - failed ? " # at least one test failed" : "");
> - tests_run++;
> + ksft_print_msg("%s schemata change using MBA\n",
> + failed ? "fail:" : "pass:");
> + if (failed)
> + ksft_print_msg("at least one test failed");
> }
>
> static int check_results(void)
> diff --git a/tools/testing/selftests/resctrl/mbm_test.c
> b/tools/testing/selftests/resctrl/mbm_test.c
> index ec6cfe01c9c2..2b4f26013d84 100644
> --- a/tools/testing/selftests/resctrl/mbm_test.c
> +++ b/tools/testing/selftests/resctrl/mbm_test.c
> @@ -14,13 +14,13 @@
> #define MAX_DIFF 300
> #define NUM_OF_RUNS 5
>
> -static void
> +static int
> show_bw_info(unsigned long *bw_imc, unsigned long *bw_resc, int span)
> {
> unsigned long avg_bw_imc = 0, avg_bw_resc = 0;
> unsigned long sum_bw_imc = 0, sum_bw_resc = 0;
> long avg_diff = 0;
> - int runs;
> + int runs, ret;
>
> /*
> * Discard the first value which is inaccurate due to monitoring setup
> @@ -35,13 +35,15 @@ show_bw_info(unsigned long *bw_imc, unsigned long
> *bw_resc, int span)
> avg_bw_resc = sum_bw_resc / 4;
> avg_diff = avg_bw_resc - avg_bw_imc;
>
> - printf("%sok MBM: diff within %d%%\n",
> - labs(avg_diff) > MAX_DIFF ? "not " : "", MAX_DIFF);
> - tests_run++;
> - printf("# avg_diff: %lu\n", labs(avg_diff));
> - printf("# Span (MB): %d\n", span);
> - printf("# avg_bw_imc: %lu\n", avg_bw_imc);
> - printf("# avg_bw_resc: %lu\n", avg_bw_resc);
> + ret = labs(avg_diff) > MAX_DIFF;
> + ksft_print_msg("%s MBM: diff within %d%%\n",
> + ret ? "fail:" : "pass:", MAX_DIFF);
> + ksft_print_msg("avg_diff: %lu\n", labs(avg_diff));
> + ksft_print_msg("Span (MB): %d\n", span);
> + ksft_print_msg("avg_bw_imc: %lu\n", avg_bw_imc);
> + ksft_print_msg("avg_bw_resc: %lu\n", avg_bw_resc);
> +
> + return ret;
> }
>
> static int check_results(int span)
> @@ -49,10 +51,10 @@ static int check_results(int span)
> unsigned long bw_imc[NUM_OF_RUNS], bw_resc[NUM_OF_RUNS];
> char temp[1024], *token_array[8];
> char output[] = RESULT_FILE_NAME;
> - int runs;
> + int runs, ret;
> FILE *fp;
>
> - printf("# Checking for pass/fail\n");
> + ksft_print_msg("Checking for pass/fail\n");
>
> fp = fopen(output, "r");
> if (!fp) {
> @@ -76,11 +78,11 @@ static int check_results(int span)
> runs++;
> }
>
> - show_bw_info(bw_imc, bw_resc, span);
> + ret = show_bw_info(bw_imc, bw_resc, span);
>
> fclose(fp);
>
> - return 0;
> + return ret;
> }
>
> static int mbm_setup(int num, ...)
> diff --git a/tools/testing/selftests/resctrl/resctrl.h
> b/tools/testing/selftests/resctrl/resctrl.h
> index 1a58767a0bd2..ebf88217f9de 100644
> --- a/tools/testing/selftests/resctrl/resctrl.h
> +++ b/tools/testing/selftests/resctrl/resctrl.h
> @@ -23,6 +23,7 @@
> #include <sys/eventfd.h>
> #include <asm/unistd.h>
> #include <linux/perf_event.h>
> +#include "../kselftest.h"
>
> #define MB (1024 * 1024)
> #define RESCTRL_PATH "/sys/fs/resctrl"
> @@ -68,7 +69,6 @@ struct resctrl_val_param {
> #define CAT_STR "cat"
>
> extern pid_t bm_pid, ppid;
> -extern int tests_run;
>
> extern char llc_occup_path[1024];
> extern bool is_amd;
> diff --git a/tools/testing/selftests/resctrl/resctrl_tests.c
> b/tools/testing/selftests/resctrl/resctrl_tests.c
> index 01f7aed7f54e..ebc24992cc2c 100644
> --- a/tools/testing/selftests/resctrl/resctrl_tests.c
> +++ b/tools/testing/selftests/resctrl/resctrl_tests.c
> @@ -60,7 +60,7 @@ int main(int argc, char **argv)
> int res, c, cpu_no = 1, span = 250, argc_new = argc, i, no_of_bits = 5;
> char *benchmark_cmd[BENCHMARK_ARGS], bw_report[64],
> bm_type[64];
> char
> benchmark_cmd_area[BENCHMARK_ARGS][BENCHMARK_ARG_SIZE];
> - int ben_ind, ben_count;
> + int ben_ind, ben_count, tests = 0;
> bool cat_test = true;
>
> for (i = 0; i < argc; i++) {
> @@ -87,12 +87,16 @@ int main(int argc, char **argv)
> while (token) {
> if (!strncmp(token, MBM_STR,
> sizeof(MBM_STR))) {
> mbm_test = true;
> + tests++;
> } else if (!strncmp(token, MBA_STR,
> sizeof(MBA_STR))) {
> mba_test = true;
> + tests++;
> } else if (!strncmp(token, CMT_STR,
> sizeof(CMT_STR))) {
> cmt_test = true;
> + tests++;
> } else if (!strncmp(token, CAT_STR,
> sizeof(CAT_STR))) {
> cat_test = true;
> + tests++;
> } else {
> printf("invalid argument\n");
>
> @@ -118,7 +122,7 @@ int main(int argc, char **argv)
> }
> }
>
> - printf("TAP version 13\n");
> + ksft_print_header();
>
> /*
> * Typically we need root privileges, because:
> @@ -126,7 +130,7 @@ int main(int argc, char **argv)
> * 2. We execute perf commands
> */
> if (geteuid() != 0)
> - printf("# WARNING: not running as root, tests may fail.\n");
> + return ksft_exit_fail_msg("not running as root, abort
> testing.\n");
>
> /* Detect AMD vendor */
> detect_amd();
> @@ -155,48 +159,46 @@ int main(int argc, char **argv)
> sprintf(bw_report, "reads");
> sprintf(bm_type, "fill_buf");
>
> - check_resctrlfs_support();
> + if (!check_resctrlfs_support())
> + return ksft_exit_fail_msg("resctrl FS does not exist\n");
> +
> filter_dmesg();
>
> + ksft_set_plan(tests ? : 4);
> +
> if (!is_amd && mbm_test) {
> - printf("# Starting MBM BW change ...\n");
> + ksft_print_msg("Starting MBM BW change ...\n");
> if (!has_ben)
> sprintf(benchmark_cmd[5], "%s", MBA_STR);
> res = mbm_bw_change(span, cpu_no, bw_report,
> benchmark_cmd);
> - printf("%sok MBM: bw change\n", res ? "not " : "");
> + ksft_test_result(!res, "MBM: bw change\n");
> mbm_test_cleanup();
> - tests_run++;
> }
>
> if (!is_amd && mba_test) {
> - printf("# Starting MBA Schemata change ...\n");
> + ksft_print_msg("Starting MBA Schemata change ...\n");
> if (!has_ben)
> sprintf(benchmark_cmd[1], "%d", span);
> res = mba_schemata_change(cpu_no, bw_report,
> benchmark_cmd);
> - printf("%sok MBA: schemata change\n", res ? "not " : "");
> + ksft_test_result(!res, "MBA: schemata change\n");
> mba_test_cleanup();
> - tests_run++;
> }
>
> if (cmt_test) {
> - printf("# Starting CMT test ...\n");
> + ksft_print_msg("Starting CMT test ...\n");
> if (!has_ben)
> sprintf(benchmark_cmd[5], "%s", "cmt");
> res = cmt_resctrl_val(cpu_no, no_of_bits, benchmark_cmd);
> - printf("%sok CMT: test\n", res ? "not " : "");
> + ksft_test_result(!res, "CMT: test\n");
> cmt_test_cleanup();
> - tests_run++;
> }
>
> if (cat_test) {
> - printf("# Starting CAT test ...\n");
> + ksft_print_msg("Starting CAT test ...\n");
> res = cat_perf_miss_val(cpu_no, no_of_bits, "L3");
> - printf("%sok CAT: test\n", res ? "not " : "");
> - tests_run++;
> + ksft_test_result(!res, "CAT: test\n");
> cat_test_cleanup();
> }
>
> - printf("1..%d\n", tests_run);
> -
> - return 0;
> + return ksft_exit_pass();
> }
> diff --git a/tools/testing/selftests/resctrl/resctrl_val.c
> b/tools/testing/selftests/resctrl/resctrl_val.c
> index 17770095c98e..48bcd5fd7d79 100644
> --- a/tools/testing/selftests/resctrl/resctrl_val.c
> +++ b/tools/testing/selftests/resctrl/resctrl_val.c
> @@ -449,7 +449,7 @@ void ctrlc_handler(int signum, siginfo_t *info, void *ptr)
> kill(bm_pid, SIGKILL);
> umount_resctrlfs();
> tests_cleanup();
> - printf("Ending\n\n");
> + ksft_print_msg("Ending\n\n");
>
> exit(EXIT_SUCCESS);
> }
> @@ -645,7 +645,7 @@ int resctrl_val(char **benchmark_cmd, struct
> resctrl_val_param *param)
> PARENT_EXIT("Child is done");
> }
>
> - printf("# benchmark PID: %d\n", bm_pid);
> + ksft_print_msg("benchmark PID: %d\n", bm_pid);
>
> /*
> * Register CTRL-C handler for parent, as it has to kill benchmark
> diff --git a/tools/testing/selftests/resctrl/resctrlfs.c
> b/tools/testing/selftests/resctrl/resctrlfs.c
> index b47f4f150189..e3d18e113313 100644
> --- a/tools/testing/selftests/resctrl/resctrlfs.c
> +++ b/tools/testing/selftests/resctrl/resctrlfs.c
> @@ -10,8 +10,6 @@
> */
> #include "resctrl.h"
>
> -int tests_run;
> -
> static int find_resctrl_mount(char *buffer)
> {
> FILE *mounts;
> @@ -68,23 +66,17 @@ int remount_resctrlfs(bool mum_resctrlfs)
> if (ret)
> strcpy(mountpoint, RESCTRL_PATH);
>
> - if (!ret && mum_resctrlfs && umount(mountpoint)) {
> - printf("not ok unmounting \"%s\"\n", mountpoint);
> - perror("# umount");
> - tests_run++;
> - }
> + if (!ret && mum_resctrlfs && umount(mountpoint))
> + ksft_print_msg("fail: unmounting \"%s\"\n", mountpoint);
>
> if (!ret && !mum_resctrlfs)
> return 0;
>
> + ksft_print_msg("mounting resctrl to \"%s\"\n", RESCTRL_PATH);
> ret = mount("resctrl", RESCTRL_PATH, "resctrl", 0, NULL);
> - printf("%sok mounting resctrl to \"%s\"\n", ret ? "not " : "",
> - RESCTRL_PATH);
> if (ret)
> perror("# mount");
>
> - tests_run++;
> -
> return ret;
> }
>
> @@ -477,13 +469,10 @@ int write_bm_pid_to_resctrl(pid_t bm_pid, char
> *ctrlgrp, char *mongrp,
> }
>
> out:
> - printf("%sok writing benchmark parameters to resctrl FS\n",
> - ret ? "not " : "");
> + ksft_print_msg("writing benchmark parameters to resctrl FS\n");
> if (ret)
> perror("# writing to resctrlfs");
>
> - tests_run++;
> -
> return ret;
> }
>
> @@ -511,7 +500,7 @@ int write_schemata(char *ctrlgrp, char *schemata, int
> cpu_no, char *resctrl_val)
> return -ENOENT;
>
> if (!schemata) {
> - printf("# Skipping empty schemata update\n");
> + ksft_print_msg("Skipping empty schemata update\n");
>
> return -1;
> }
> @@ -552,10 +541,9 @@ int write_schemata(char *ctrlgrp, char *schemata, int
> cpu_no, char *resctrl_val)
> fclose(fp);
>
> out:
> - printf("%sok Write schema \"%s\" to resctrl FS%s%s\n",
> - ret ? "not " : "", schema, ret ? " # " : "",
> - ret ? reason : "");
> - tests_run++;
> + ksft_print_msg("Write schema \"%s\" to resctrl FS%s%s\n",
> + schema, ret ? " # " : "",
> + ret ? reason : "");
>
> return ret;
> }
> @@ -579,18 +567,17 @@ bool check_resctrlfs_support(void)
>
> fclose(inf);
>
> - printf("%sok kernel supports resctrl filesystem\n", ret ? "" : "not ");
> - tests_run++;
> + ksft_print_msg("%s kernel supports resctrl filesystem\n",
> + ret ? "pass:" : "fail:");
>
> dp = opendir(RESCTRL_PATH);
> - printf("%sok resctrl mountpoint \"%s\" exists\n",
> - dp ? "" : "not ", RESCTRL_PATH);
> + ksft_print_msg("%s resctrl mountpoint \"%s\" exists\n",
> + dp ? "pass:" : "fail:", RESCTRL_PATH);
> if (dp)
> closedir(dp);
> - tests_run++;
>
> - printf("# resctrl filesystem %s mounted\n",
> - find_resctrl_mount(NULL) ? "not" : "is");
> + ksft_print_msg("resctrl filesystem %s mounted\n",
> + find_resctrl_mount(NULL) ? "not" : "is");
>
> return ret;
> }
> @@ -672,9 +659,9 @@ int filter_dmesg(void)
>
> while (fgets(line, 1024, fp)) {
> if (strstr(line, "intel_rdt:"))
> - printf("# dmesg: %s", line);
> + ksft_print_msg("dmesg: %s", line);
> if (strstr(line, "resctrl:"))
> - printf("# dmesg: %s", line);
> + ksft_print_msg("dmesg: %s", line);
> }
> fclose(fp);
> waitpid(pid, NULL, 0);
> --
> 2.30.1
In general, this patch has some minor nits. When displaying the messages,
normally the first character should be capitalized.
ksft_print_msg("checking for pass/fail\n");
should be
ksft_print_msg("Checking for pass/fail\n");
And
ksft_print_msg("Please Enter value in range 1 to %d\n",count_of_bits);
Should be
ksft_print_msg("Please enter value in range 1 to %d\n", count_of_bits);
I am not too concerned about this. You can improve it if you like it.
