/*
|
* 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"
|
#include <errno.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;
|
}
|
|
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;
|
}
|
