mirror of https://gitee.com/openkylin/linux.git
78 lines
1.8 KiB
C
78 lines
1.8 KiB
C
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/*
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* drv_configs.h: Interface to apply PMU specific configuration
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* Copyright (c) 2016-2018, Linaro Ltd.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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*/
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#include "drv_configs.h"
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#include "evlist.h"
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#include "evsel.h"
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#include "pmu.h"
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static int
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perf_evsel__apply_drv_configs(struct perf_evsel *evsel,
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struct perf_evsel_config_term **err_term)
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{
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bool found = false;
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int err = 0;
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struct perf_evsel_config_term *term;
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struct perf_pmu *pmu = NULL;
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while ((pmu = perf_pmu__scan(pmu)) != NULL)
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if (pmu->type == evsel->attr.type) {
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found = true;
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break;
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}
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list_for_each_entry(term, &evsel->config_terms, list) {
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if (term->type != PERF_EVSEL__CONFIG_TERM_DRV_CFG)
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continue;
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/*
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* We have a configuration term, report an error if we
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* can't find the PMU or if the PMU driver doesn't support
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* cmd line driver configuration.
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*/
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if (!found || !pmu->set_drv_config) {
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err = -EINVAL;
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*err_term = term;
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break;
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}
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err = pmu->set_drv_config(term);
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if (err) {
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*err_term = term;
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break;
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}
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}
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return err;
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}
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int perf_evlist__apply_drv_configs(struct perf_evlist *evlist,
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struct perf_evsel **err_evsel,
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struct perf_evsel_config_term **err_term)
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{
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struct perf_evsel *evsel;
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int err = 0;
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evlist__for_each_entry(evlist, evsel) {
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err = perf_evsel__apply_drv_configs(evsel, err_term);
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if (err) {
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*err_evsel = evsel;
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break;
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}
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}
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return err;
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}
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