#include "coresight-priv.h"
static DEFINE_MUTEX(coresight_mutex);
+DEFINE_PER_CPU(struct coresight_device *, csdev_sink);
/**
* struct coresight_node - elements of a path, from source to sink
}
EXPORT_SYMBOL_GPL(coresight_remove_cti_ops);
+void coresight_set_percpu_sink(int cpu, struct coresight_device *csdev)
+{
+ per_cpu(csdev_sink, cpu) = csdev;
+}
+EXPORT_SYMBOL_GPL(coresight_set_percpu_sink);
+
+struct coresight_device *coresight_get_percpu_sink(int cpu)
+{
+ return per_cpu(csdev_sink, cpu);
+}
+EXPORT_SYMBOL_GPL(coresight_get_percpu_sink);
+
static int coresight_id_match(struct device *dev, void *data)
{
int trace_id, i_trace_id;
if (csdev == sink)
goto out;
+ if (coresight_is_percpu_source(csdev) && coresight_is_percpu_sink(sink) &&
+ sink == per_cpu(csdev_sink, source_ops(csdev)->cpu_id(csdev))) {
+ if (_coresight_build_path(sink, sink, path) == 0) {
+ found = true;
+ goto out;
+ }
+ }
+
/* Not a sink - recursively explore each port found on this element */
for (i = 0; i < csdev->pdata->nr_outport; i++) {
struct coresight_device *child_dev;
int depth = 0;
/* look for a default sink if we have not found for this device */
- if (!csdev->def_sink)
- csdev->def_sink = coresight_find_sink(csdev, &depth);
+ if (!csdev->def_sink) {
+ if (coresight_is_percpu_source(csdev))
+ csdev->def_sink = per_cpu(csdev_sink, source_ops(csdev)->cpu_id(csdev));
+ if (!csdev->def_sink)
+ csdev->def_sink = coresight_find_sink(csdev, &depth);
+ }
return csdev->def_sink;
}
CORESIGHT_DEV_SUBTYPE_SINK_PORT,
CORESIGHT_DEV_SUBTYPE_SINK_BUFFER,
CORESIGHT_DEV_SUBTYPE_SINK_SYSMEM,
+ CORESIGHT_DEV_SUBTYPE_SINK_PERCPU_SYSMEM,
};
enum coresight_dev_subtype_link {
}
#endif /* CONFIG_64BIT */
+static inline bool coresight_is_percpu_source(struct coresight_device *csdev)
+{
+ return csdev && (csdev->type == CORESIGHT_DEV_TYPE_SOURCE) &&
+ (csdev->subtype.source_subtype == CORESIGHT_DEV_SUBTYPE_SOURCE_PROC);
+}
+
+static inline bool coresight_is_percpu_sink(struct coresight_device *csdev)
+{
+ return csdev && (csdev->type == CORESIGHT_DEV_TYPE_SINK) &&
+ (csdev->subtype.sink_subtype == CORESIGHT_DEV_SUBTYPE_SINK_PERCPU_SYSMEM);
+}
+
extern struct coresight_device *
coresight_register(struct coresight_desc *desc);
extern void coresight_unregister(struct coresight_device *csdev);