8e264c52e1
Enhance coresight developer's efficiency to debug coresight drivers. - Kconfig becomes a tristate, to allow =m - append -core to source file name to allow module to be called coresight by the Makefile - modules can have only one init/exit, so we add the etm_perf register/unregister function calls to the core init/exit functions. - add a MODULE_DEVICE_TABLE for autoloading on boot Cc: Mathieu Poirier <mathieu.poirier@linaro.org> Cc: Leo Yan <leo.yan@linaro.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Randy Dunlap <rdunlap@infradead.org> Cc: Suzuki K Poulose <Suzuki.Poulose@arm.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Russell King <linux@armlinux.org.uk> Tested-by: Mike Leach <mike.leach@linaro.org> Reviewed-by: Suzuki K Poulose <suzuki.poulose@arm.com> Signed-off-by: Kim Phillips <kim.phillips@arm.com> Signed-off-by: Tingwei Zhang <tingwei@codeaurora.org> Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org> Link: https://lore.kernel.org/r/20200928163513.70169-25-mathieu.poirier@linaro.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
89 lines
2.4 KiB
C
89 lines
2.4 KiB
C
/* 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;
|
|
|
|
/*
|
|
* 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.
|
|
* @snk_config: The sink configuration.
|
|
* @path: An array of path, each slot for one CPU.
|
|
*/
|
|
struct etm_event_data {
|
|
struct work_struct work;
|
|
cpumask_t mask;
|
|
void *snk_config;
|
|
struct list_head * __percpu *path;
|
|
};
|
|
|
|
#if IS_ENABLED(CONFIG_CORESIGHT)
|
|
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;
|
|
}
|
|
#else
|
|
static inline int etm_perf_symlink(struct coresight_device *csdev, bool link)
|
|
{ return -EINVAL; }
|
|
int etm_perf_add_symlink_sink(struct coresight_device *csdev)
|
|
{ return -EINVAL; }
|
|
void etm_perf_del_symlink_sink(struct coresight_device *csdev) {}
|
|
static inline void *etm_perf_sink_config(struct perf_output_handle *handle)
|
|
{
|
|
return NULL;
|
|
}
|
|
|
|
#endif /* CONFIG_CORESIGHT */
|
|
|
|
int __init etm_perf_init(void);
|
|
void __exit etm_perf_exit(void);
|
|
|
|
#endif
|