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coresight: Communicate perf event to sink buffer allocation functions

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Make struct perf_event available to sink buffer allocation functions in
order to use the pid they carry to allocate and free buffer memory along
with regimenting access to what source a sink can collect data for.

Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Tested-by: Leo Yan <leo.yan@linaro.org>
Tested-by: Robert Walker <robert.walker@arm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Mathieu Poirier 2019-04-25 13:53:01 -06:00 • committed by Greg Kroah-Hartman
parent f5200aa983
commit a0f08a6a9f
5 changed files with 22 additions and 17 deletions
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5
include/linux/coresight.h
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@ -193,8 +193,9 @@ struct coresight_device {
struct coresight_ops_sink {
int (*enable)(struct coresight_device *csdev, u32 mode, void *data);
int (*disable)(struct coresight_device *csdev);
void *(*alloc_buffer)(struct coresight_device *csdev, int cpu,
void **pages, int nr_pages, bool overwrite);
void *(*alloc_buffer)(struct coresight_device *csdev,
struct perf_event *event, void **pages,
int nr_pages, bool overwrite);
void (*free_buffer)(void *config);
unsigned long (*update_buffer)(struct coresight_device *csdev,
struct perf_output_handle *handle,