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Release 4.10 tools/perf/util/drv_configs.c

Directory: tools/perf/util
 * drv_configs.h: Interface to apply PMU specific configuration
 * Copyright (c) 2016-2018, Linaro Ltd.
 * This program is free software; you can redistribute it and/or modify it
 * under the terms and conditions of the GNU General Public License,
 * version 2, as published by the Free Software Foundation.
 * This program is distributed in the hope it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
 * more details.

#include "drv_configs.h"
#include "evlist.h"
#include "evsel.h"
#include "pmu.h"

static int perf_evsel__apply_drv_configs(struct perf_evsel *evsel, struct perf_evsel_config_term **err_term) { bool found = false; int err = 0; struct perf_evsel_config_term *term; struct perf_pmu *pmu = NULL; while ((pmu = perf_pmu__scan(pmu)) != NULL) if (pmu->type == evsel->attr.type) { found = true; break; } list_for_each_entry(term, &evsel->config_terms, list) { if (term->type != PERF_EVSEL__CONFIG_TERM_DRV_CFG) continue; /* * We have a configuration term, report an error if we * can't find the PMU or if the PMU driver doesn't support * cmd line driver configuration. */ if (!found || !pmu->set_drv_config) { err = -EINVAL; *err_term = term; break; } err = pmu->set_drv_config(term); if (err) { *err_term = term; break; } } return err; }


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int perf_evlist__apply_drv_configs(struct perf_evlist *evlist, struct perf_evsel **err_evsel, struct perf_evsel_config_term **err_term) { struct perf_evsel *evsel; int err = 0; evlist__for_each_entry(evlist, evsel) { err = perf_evsel__apply_drv_configs(evsel, err_term); if (err) { *err_evsel = evsel; break; } } return err; }


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Directory: tools/perf/util
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