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85b73447a4
CAT and CMT tests have count_of_bits, long_mask, cbm_mask, and cache_size global variables that can be moved into the sole using function. Make the global variables local variables of the relevant function to scope them better. While at it, move cache_size initialization into the declaration line. Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> Reviewed-by: Reinette Chatre <reinette.chatre@intel.com> Tested-by: Babu Moger <babu.moger@amd.com> Tested-by: Shaopeng Tan (Fujitsu) <tan.shaopeng@fujitsu.com> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
129 lines
2.6 KiB
C
129 lines
2.6 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* Cache Monitoring Technology (CMT) test
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*
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* Copyright (C) 2018 Intel Corporation
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*
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* Authors:
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* Sai Praneeth Prakhya <sai.praneeth.prakhya@intel.com>,
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* Fenghua Yu <fenghua.yu@intel.com>
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*/
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#include "resctrl.h"
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#include <unistd.h>
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#define RESULT_FILE_NAME "result_cmt"
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#define NUM_OF_RUNS 5
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#define MAX_DIFF 2000000
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#define MAX_DIFF_PERCENT 15
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static int cmt_setup(struct resctrl_val_param *p)
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{
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/* Run NUM_OF_RUNS times */
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if (p->num_of_runs >= NUM_OF_RUNS)
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return END_OF_TESTS;
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p->num_of_runs++;
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return 0;
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}
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static int check_results(struct resctrl_val_param *param, int no_of_bits)
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{
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char *token_array[8], temp[512];
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unsigned long sum_llc_occu_resc = 0;
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int runs = 0;
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FILE *fp;
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ksft_print_msg("Checking for pass/fail\n");
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fp = fopen(param->filename, "r");
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if (!fp) {
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perror("# Error in opening file\n");
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return errno;
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}
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while (fgets(temp, sizeof(temp), fp)) {
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char *token = strtok(temp, ":\t");
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int fields = 0;
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while (token) {
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token_array[fields++] = token;
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token = strtok(NULL, ":\t");
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}
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/* Field 3 is llc occ resc value */
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if (runs > 0)
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sum_llc_occu_resc += strtoul(token_array[3], NULL, 0);
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runs++;
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}
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fclose(fp);
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return show_cache_info(sum_llc_occu_resc, no_of_bits, param->span,
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MAX_DIFF, MAX_DIFF_PERCENT, NUM_OF_RUNS,
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true, true);
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}
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void cmt_test_cleanup(void)
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{
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remove(RESULT_FILE_NAME);
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}
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int cmt_resctrl_val(int cpu_no, int n, char **benchmark_cmd)
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{
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unsigned long cache_size = 0;
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unsigned long long_mask;
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char cbm_mask[256];
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int count_of_bits;
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int ret;
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if (!validate_resctrl_feature_request(CMT_STR))
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return -1;
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ret = get_cbm_mask("L3", cbm_mask);
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if (ret)
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return ret;
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long_mask = strtoul(cbm_mask, NULL, 16);
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ret = get_cache_size(cpu_no, "L3", &cache_size);
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if (ret)
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return ret;
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ksft_print_msg("Cache size :%lu\n", cache_size);
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count_of_bits = count_bits(long_mask);
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if (n < 1 || n > count_of_bits) {
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ksft_print_msg("Invalid input value for numbr_of_bits n!\n");
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ksft_print_msg("Please enter value in range 1 to %d\n", count_of_bits);
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return -1;
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}
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struct resctrl_val_param param = {
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.resctrl_val = CMT_STR,
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.ctrlgrp = "c1",
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.mongrp = "m1",
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.cpu_no = cpu_no,
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.filename = RESULT_FILE_NAME,
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.mask = ~(long_mask << n) & long_mask,
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.span = cache_size * n / count_of_bits,
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.num_of_runs = 0,
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.setup = cmt_setup,
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};
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if (strcmp(benchmark_cmd[0], "fill_buf") == 0)
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sprintf(benchmark_cmd[1], "%zu", param.span);
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remove(RESULT_FILE_NAME);
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ret = resctrl_val(benchmark_cmd, ¶m);
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if (ret)
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goto out;
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ret = check_results(¶m, n);
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out:
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cmt_test_cleanup();
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return ret;
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}
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