74 lines · c
1// SPDX-License-Identifier: GPL-2.02/*3 * Copyright(C) 2020 Linaro Limited. All rights reserved.4 * Author: Mike Leach <mike.leach@linaro.org>5 */6 7#include "coresight-config.h"8#include "coresight-syscfg.h"9 10/* create an alternate autofdo configuration */11 12/* we will provide 4 sets of preset parameter values */13#define AFDO2_NR_PRESETS 414/* the total number of parameters in used features - strobing has 2 */15#define AFDO2_NR_PARAM_SUM 216 17static const char *afdo2_ref_names[] = {18 "strobing",19};20 21/*22 * set of presets leaves strobing window constant while varying period to allow23 * experimentation with mark / space ratios for various workloads24 */25static u64 afdo2_presets[AFDO2_NR_PRESETS][AFDO2_NR_PARAM_SUM] = {26 { 1000, 100 },27 { 1000, 1000 },28 { 1000, 5000 },29 { 1000, 10000 },30};31 32struct cscfg_config_desc afdo2 = {33 .name = "autofdo2",34 .description = "Setup ETMs with strobing for autofdo\n"35 "Supplied presets allow experimentation with mark-space ratio for various loads\n",36 .nr_feat_refs = ARRAY_SIZE(afdo2_ref_names),37 .feat_ref_names = afdo2_ref_names,38 .nr_presets = AFDO2_NR_PRESETS,39 .nr_total_params = AFDO2_NR_PARAM_SUM,40 .presets = &afdo2_presets[0][0],41};42 43static struct cscfg_feature_desc *sample_feats[] = {44 NULL45};46 47static struct cscfg_config_desc *sample_cfgs[] = {48 &afdo2,49 NULL50};51 52static struct cscfg_load_owner_info mod_owner = {53 .type = CSCFG_OWNER_MODULE,54 .owner_handle = THIS_MODULE,55};56 57/* module init and exit - just load and unload configs */58static int __init cscfg_sample_init(void)59{60 return cscfg_load_config_sets(sample_cfgs, sample_feats, &mod_owner);61}62 63static void __exit cscfg_sample_exit(void)64{65 cscfg_unload_config_sets(&mod_owner);66}67 68module_init(cscfg_sample_init);69module_exit(cscfg_sample_exit);70 71MODULE_LICENSE("GPL v2");72MODULE_AUTHOR("Mike Leach <mike.leach@linaro.org>");73MODULE_DESCRIPTION("CoreSight Syscfg Example");74