/* SPDX-License-Identifier: GPL-2.0 */
/*
* Copyright ( C ) 2015 Linaro Limited . All rights reserved .
* Author : Mathieu Poirier < mathieu . poirier @ linaro . org >
*/
#ifndef _CORESIGHT_ETM_PERF_H
#define _CORESIGHT_ETM_PERF_H
#include <linux/percpu-defs.h>
#include "coresight-priv.h"
struct coresight_device;
struct cscfg_config_desc;
/*
* In both ETMv3 and v4 the maximum number of address comparator implentable
* is 8 . The actual number is implementation specific and will be checked
* when filters are applied .
*/
#define ETM_ADDR_CMP_MAX 8
/**
* struct etm_filter - single instruction range or start / stop configuration .
* @ start_addr : The address to start tracing on .
* @ stop_addr : The address to stop tracing on .
* @ type : Is this a range or start / stop filter .
*/
struct etm_filter {
unsigned long start_addr;
unsigned long stop_addr;
enum etm_addr_type type;
};
/**
* struct etm_filters - set of filters for a session
* @ etm_filter : All the filters for this session .
* @ nr_filters : Number of filters
* @ ssstatus : Status of the start / stop logic .
*/
struct etm_filters {
struct etm_filter etm_filter[ETM_ADDR_CMP_MAX];
unsigned int nr_filters;
bool ssstatus;
};
/**
* struct etm_event_data - Coresight specifics associated to an event
* @ work : Handle to free allocated memory outside IRQ context .
* @ mask : Hold the CPU ( s ) this event was set for .
* @ aux_hwid_done : Whether a CPU has emitted the TraceID packet or not .
* @ snk_config : The sink configuration .
* @ cfg_hash : The hash id of any coresight config selected .
* @ path : An array of path , each slot for one CPU .
*/
struct etm_event_data {
struct work_struct work;
cpumask_t mask;
cpumask_t aux_hwid_done;
void *snk_config;
u32 cfg_hash;
struct coresight_path * __percpu *path;
};
int etm_perf_symlink(struct coresight_device *csdev, bool link);
int etm_perf_add_symlink_sink(struct coresight_device *csdev);
void etm_perf_del_symlink_sink(struct coresight_device *csdev);
static inline void *etm_perf_sink_config(struct perf_output_handle *handle)
{
struct etm_event_data *data = perf_get_aux(handle);
if (data)
return data->snk_config;
return NULL;
}
int etm_perf_add_symlink_cscfg(struct device *dev,
struct cscfg_config_desc *config_desc);
void etm_perf_del_symlink_cscfg(struct cscfg_config_desc *config_desc);
int __init etm_perf_init(void );
void etm_perf_exit(void );
#endif
Messung V0.5 in Prozent C=94 H=100 G=96
¤ Dauer der Verarbeitung: 0.10 Sekunden
(vorverarbeitet am 2026-09-28)
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