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 <mathieu.poirier@linaro.org> Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com> Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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@ -23,20 +23,6 @@
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static struct pmu etm_pmu;
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static bool etm_perf_up;
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/**
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* struct etm_event_data - Coresight specifics associated to an event
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* @work: Handle to free allocated memory outside IRQ context.
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* @mask: Hold the CPU(s) this event was set for.
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* @snk_config: The sink configuration.
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* @path: An array of path, each slot for one CPU.
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*/
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struct etm_event_data {
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struct work_struct work;
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cpumask_t mask;
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void *snk_config;
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struct list_head * __percpu *path;
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};
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static DEFINE_PER_CPU(struct perf_output_handle, ctx_handle);
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static DEFINE_PER_CPU(struct coresight_device *, csdev_src);
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@ -7,6 +7,7 @@
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#ifndef _CORESIGHT_ETM_PERF_H
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#define _CORESIGHT_ETM_PERF_H
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#include <linux/percpu-defs.h>
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#include "coresight-priv.h"
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struct coresight_device;
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@ -42,14 +43,39 @@ struct etm_filters {
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bool ssstatus;
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};
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/**
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* struct etm_event_data - Coresight specifics associated to an event
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* @work: Handle to free allocated memory outside IRQ context.
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* @mask: Hold the CPU(s) this event was set for.
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* @snk_config: The sink configuration.
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* @path: An array of path, each slot for one CPU.
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*/
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struct etm_event_data {
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struct work_struct work;
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cpumask_t mask;
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void *snk_config;
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struct list_head * __percpu *path;
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};
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#ifdef CONFIG_CORESIGHT
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int etm_perf_symlink(struct coresight_device *csdev, bool link);
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static inline void *etm_perf_sink_config(struct perf_output_handle *handle)
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{
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struct etm_event_data *data = perf_get_aux(handle);
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if (data)
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return data->snk_config;
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return NULL;
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}
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#else
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static inline int etm_perf_symlink(struct coresight_device *csdev, bool link)
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{ return -EINVAL; }
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static inline void *etm_perf_sink_config(struct perf_output_handle *handle)
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{
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return NULL;
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}
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#endif /* CONFIG_CORESIGHT */
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#endif
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