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coresight: etm3x: implementing perf_enable/disable() API

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That way traces can be enabled and disabled automatically
from the Perf subystem using the PMU abstraction.

Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Mathieu Poirier
2016-02-17 17:51:57 -07:00
committed by Greg Kroah-Hartman
parent 2127154d11
commit 882d5e1124
5 changed files with 99 additions and 9 deletions
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6
include/linux/coresight.h
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@@ -14,6 +14,7 @@
#define _LINUX_CORESIGHT_H
#include <linux/device.h>
#include <linux/perf_event.h>
#include <linux/sched.h>
/* Peripheral id registers (0xFD0-0xFEC) */
@@ -206,14 +207,15 @@ struct coresight_ops_link {
* @cpu_id: returns the value of the CPU number this component
* is associated to.
* @trace_id: returns the value of the component's trace ID as known
to the HW.
* to the HW.
* @enable: enables tracing for a source.
* @disable: disables tracing for a source.
*/
struct coresight_ops_source {
int (*cpu_id)(struct coresight_device *csdev);
int (*trace_id)(struct coresight_device *csdev);
int (*enable)(struct coresight_device *csdev, u32 mode);
int (*enable)(struct coresight_device *csdev,
struct perf_event_attr *attr, u32 mode);
void (*disable)(struct coresight_device *csdev);
};