diff options
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/trace_remote.h | 7 | ||||
| -rw-r--r-- | include/linux/trace_remote_event.h | 23 |
2 files changed, 29 insertions, 1 deletions
diff --git a/include/linux/trace_remote.h b/include/linux/trace_remote.h index 090c58b7d92b..fcd1d46ea466 100644 --- a/include/linux/trace_remote.h +++ b/include/linux/trace_remote.h @@ -5,6 +5,7 @@ #include <linux/dcache.h> #include <linux/ring_buffer.h> +#include <linux/trace_remote_event.h> /** * struct trace_remote_callbacks - Callbacks used by Tracefs to control the remote @@ -23,6 +24,8 @@ * @reset: Called on `echo 0 > trace`. It is expected from the * remote to reset all ring-buffer pages. * new reader-page from the @cpu ring-buffer. + * @enable_event: Called on events/event_name/enable. It is expected from + * the remote to allow the writing event @id. */ struct trace_remote_callbacks { int (*init)(struct dentry *d, void *priv); @@ -31,9 +34,11 @@ struct trace_remote_callbacks { int (*enable_tracing)(bool enable, void *priv); int (*swap_reader_page)(unsigned int cpu, void *priv); int (*reset)(unsigned int cpu, void *priv); + int (*enable_event)(unsigned short id, bool enable, void *priv); }; -int trace_remote_register(const char *name, struct trace_remote_callbacks *cbs, void *priv); +int trace_remote_register(const char *name, struct trace_remote_callbacks *cbs, void *priv, + struct remote_event *events, size_t nr_events); int trace_remote_alloc_buffer(struct trace_buffer_desc *desc, size_t desc_size, size_t buffer_size, const struct cpumask *cpumask); diff --git a/include/linux/trace_remote_event.h b/include/linux/trace_remote_event.h new file mode 100644 index 000000000000..a4449008a075 --- /dev/null +++ b/include/linux/trace_remote_event.h @@ -0,0 +1,23 @@ +/* SPDX-License-Identifier: GPL-2.0 */ + +#ifndef _LINUX_TRACE_REMOTE_EVENTS_H +#define _LINUX_TRACE_REMOTE_EVENTS_H + +struct trace_remote; +struct trace_event_fields; + +struct remote_event_hdr { + unsigned short id; +}; + +#define REMOTE_EVENT_NAME_MAX 30 +struct remote_event { + char name[REMOTE_EVENT_NAME_MAX]; + unsigned short id; + bool enabled; + struct trace_remote *remote; + struct trace_event_fields *fields; + char *print_fmt; + void (*print)(void *evt, struct trace_seq *seq); +}; +#endif |