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/* 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 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; } 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); #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; } int etm_perf_add_symlink_cscfg(struct device *dev, struct cscfg_config_desc *config_desc) { return -EINVAL; } void etm_perf_del_symlink_cscfg(struct cscfg_config_desc *config_desc) {} #endif /* CONFIG_CORESIGHT */ int __init etm_perf_init(void); void etm_perf_exit(void); #endif |