| 1 | // SPDX-License-Identifier: GPL-2.0 |
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| 2 | /* |
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| 3 | * Copyright(C) 2020 Linaro Limited. All rights reserved. |
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| 4 | * Author: Mike Leach <mike.leach@linaro.org> |
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| 5 | */ |
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| 6 | |
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| 7 | #include "coresight-config.h" |
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| 8 | #include "coresight-syscfg.h" |
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| 9 | |
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| 10 | /* create an alternate autofdo configuration */ |
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| 11 | |
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| 12 | /* we will provide 4 sets of preset parameter values */ |
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| 13 | #define AFDO2_NR_PRESETS 4 |
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| 14 | /* the total number of parameters in used features - strobing has 2 */ |
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| 15 | #define AFDO2_NR_PARAM_SUM 2 |
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| 16 | |
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| 17 | static const char *afdo2_ref_names[] = { |
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| 18 | "strobing" , |
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| 19 | }; |
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| 20 | |
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| 21 | /* |
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| 22 | * set of presets leaves strobing window constant while varying period to allow |
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| 23 | * experimentation with mark / space ratios for various workloads |
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| 24 | */ |
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| 25 | static u64 afdo2_presets[AFDO2_NR_PRESETS][AFDO2_NR_PARAM_SUM] = { |
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| 26 | { 1000, 100 }, |
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| 27 | { 1000, 1000 }, |
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| 28 | { 1000, 5000 }, |
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| 29 | { 1000, 10000 }, |
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| 30 | }; |
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| 31 | |
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| 32 | struct cscfg_config_desc afdo2 = { |
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| 33 | .name = "autofdo2" , |
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| 34 | .description = "Setup ETMs with strobing for autofdo\n" |
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| 35 | "Supplied presets allow experimentation with mark-space ratio for various loads\n" , |
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| 36 | .nr_feat_refs = ARRAY_SIZE(afdo2_ref_names), |
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| 37 | .feat_ref_names = afdo2_ref_names, |
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| 38 | .nr_presets = AFDO2_NR_PRESETS, |
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| 39 | .nr_total_params = AFDO2_NR_PARAM_SUM, |
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| 40 | .presets = &afdo2_presets[0][0], |
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| 41 | }; |
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| 42 | |
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| 43 | static struct cscfg_feature_desc *sample_feats[] = { |
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| 44 | NULL |
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| 45 | }; |
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| 46 | |
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| 47 | static struct cscfg_config_desc *sample_cfgs[] = { |
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| 48 | &afdo2, |
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| 49 | NULL |
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| 50 | }; |
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| 51 | |
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| 52 | static struct cscfg_load_owner_info mod_owner = { |
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| 53 | .type = CSCFG_OWNER_MODULE, |
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| 54 | .owner_handle = THIS_MODULE, |
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| 55 | }; |
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| 56 | |
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| 57 | /* module init and exit - just load and unload configs */ |
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| 58 | static int __init cscfg_sample_init(void) |
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| 59 | { |
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| 60 | return cscfg_load_config_sets(sample_cfgs, sample_feats, &mod_owner); |
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| 61 | } |
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| 62 | |
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| 63 | static void __exit cscfg_sample_exit(void) |
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| 64 | { |
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| 65 | cscfg_unload_config_sets(&mod_owner); |
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| 66 | } |
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| 67 | |
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| 68 | module_init(cscfg_sample_init); |
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| 69 | module_exit(cscfg_sample_exit); |
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| 70 | |
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| 71 | MODULE_LICENSE("GPL v2" ); |
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| 72 | MODULE_AUTHOR("Mike Leach <mike.leach@linaro.org>" ); |
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| 73 | MODULE_DESCRIPTION("CoreSight Syscfg Example" ); |
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| 74 | |
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