From d25054ee8d18c937058a1b69b35fa5bfdef471f3 Mon Sep 17 00:00:00 2001 From: Suzuki K Poulose Date: Thu, 20 Sep 2018 13:17:55 -0600 Subject: coresight: perf: Add helper to retrieve sink configuration We can always find the sink configuration for a given perf_output_handle. Add a helper to retrieve the sink configuration for a given perf_output_handle. This will be used to get rid of the set_buffer() call back. Cc: Mathieu Poirier Signed-off-by: Suzuki K Poulose Signed-off-by: Mathieu Poirier Signed-off-by: Greg Kroah-Hartman --- drivers/hwtracing/coresight/coresight-etm-perf.h | 26 ++++++++++++++++++++++++ 1 file changed, 26 insertions(+) (limited to 'drivers/hwtracing/coresight/coresight-etm-perf.h') diff --git a/drivers/hwtracing/coresight/coresight-etm-perf.h b/drivers/hwtracing/coresight/coresight-etm-perf.h index 4197df4faf5e..da7d9336a15c 100644 --- a/drivers/hwtracing/coresight/coresight-etm-perf.h +++ b/drivers/hwtracing/coresight/coresight-etm-perf.h @@ -7,6 +7,7 @@ #ifndef _CORESIGHT_ETM_PERF_H #define _CORESIGHT_ETM_PERF_H +#include #include "coresight-priv.h" struct coresight_device; @@ -42,14 +43,39 @@ struct etm_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; +}; #ifdef CONFIG_CORESIGHT int etm_perf_symlink(struct coresight_device *csdev, bool link); +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; } +static inline void *etm_perf_sink_config(struct perf_output_handle *handle) +{ + return NULL; +} + #endif /* CONFIG_CORESIGHT */ #endif -- cgit v1.2.3