diff options
| -rw-r--r-- | drivers/hwtracing/coresight/coresight-core.c | 22 | ||||
| -rw-r--r-- | drivers/hwtracing/coresight/coresight-priv.h | 2 | ||||
| -rw-r--r-- | include/linux/coresight.h | 4 |
3 files changed, 28 insertions, 0 deletions
diff --git a/drivers/hwtracing/coresight/coresight-core.c b/drivers/hwtracing/coresight/coresight-core.c index 5632bcb8feb6..fa758cc21827 100644 --- a/drivers/hwtracing/coresight/coresight-core.c +++ b/drivers/hwtracing/coresight/coresight-core.c @@ -392,6 +392,28 @@ void coresight_disable_source(struct coresight_device *csdev, void *data) } EXPORT_SYMBOL_GPL(coresight_disable_source); +void coresight_pause_source(struct coresight_device *csdev) +{ + if (!coresight_is_percpu_source(csdev)) + return; + + if (source_ops(csdev)->pause_perf) + source_ops(csdev)->pause_perf(csdev); +} +EXPORT_SYMBOL_GPL(coresight_pause_source); + +int coresight_resume_source(struct coresight_device *csdev) +{ + if (!coresight_is_percpu_source(csdev)) + return -EOPNOTSUPP; + + if (!source_ops(csdev)->resume_perf) + return -EOPNOTSUPP; + + return source_ops(csdev)->resume_perf(csdev); +} +EXPORT_SYMBOL_GPL(coresight_resume_source); + /* * coresight_disable_path_from : Disable components in the given path beyond * @nd in the list. If @nd is NULL, all the components, except the SOURCE are diff --git a/drivers/hwtracing/coresight/coresight-priv.h b/drivers/hwtracing/coresight/coresight-priv.h index ce91e0fbb497..33e22b1ba043 100644 --- a/drivers/hwtracing/coresight/coresight-priv.h +++ b/drivers/hwtracing/coresight/coresight-priv.h @@ -251,5 +251,7 @@ void coresight_add_helper(struct coresight_device *csdev, void coresight_set_percpu_sink(int cpu, struct coresight_device *csdev); struct coresight_device *coresight_get_percpu_sink(int cpu); void coresight_disable_source(struct coresight_device *csdev, void *data); +void coresight_pause_source(struct coresight_device *csdev); +int coresight_resume_source(struct coresight_device *csdev); #endif diff --git a/include/linux/coresight.h b/include/linux/coresight.h index 8abdd8b5c791..4ac65c68bbf4 100644 --- a/include/linux/coresight.h +++ b/include/linux/coresight.h @@ -398,6 +398,8 @@ struct coresight_ops_link { * is associated to. * @enable: enables tracing for a source. * @disable: disables tracing for a source. + * @resume_perf: resumes tracing for a source in perf session. + * @pause_perf: pauses tracing for a source in perf session. */ struct coresight_ops_source { int (*cpu_id)(struct coresight_device *csdev); @@ -405,6 +407,8 @@ struct coresight_ops_source { enum cs_mode mode, struct coresight_path *path); void (*disable)(struct coresight_device *csdev, struct perf_event *event); + int (*resume_perf)(struct coresight_device *csdev); + void (*pause_perf)(struct coresight_device *csdev); }; /** |