diff options
| author | Jiri Pirko <jiri@mellanox.com> | 2016-07-12 18:05:03 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2016-07-12 14:20:18 -0700 |
| commit | e5224f0fe2acddbc2fa9b419d8867ced7f5381fc (patch) | |
| tree | 246d2e1b757978a0e507b5198ec1bb60c016c3a4 /include/trace | |
| parent | 85c22bad56ec0d0d8d8518414f97106233132e43 (diff) | |
| download | linux-e5224f0fe2acddbc2fa9b419d8867ced7f5381fc.tar.bz2 | |
devlink: add hardware messages tracing facility
Define a tracepoint and allow user to trace messages going to and from
hardware associated with devlink instance.
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Acked-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/trace')
| -rw-r--r-- | include/trace/events/devlink.h | 68 |
1 files changed, 68 insertions, 0 deletions
diff --git a/include/trace/events/devlink.h b/include/trace/events/devlink.h new file mode 100644 index 000000000000..333c32ac9bfa --- /dev/null +++ b/include/trace/events/devlink.h @@ -0,0 +1,68 @@ +#if IS_ENABLED(CONFIG_NET_DEVLINK) + +#undef TRACE_SYSTEM +#define TRACE_SYSTEM devlink + +#if !defined(_TRACE_DEVLINK_H) || defined(TRACE_HEADER_MULTI_READ) +#define _TRACE_DEVLINK_H + +#include <linux/device.h> +#include <net/devlink.h> +#include <linux/tracepoint.h> + +/* + * Tracepoint for devlink hardware message: + */ +TRACE_EVENT(devlink_hwmsg, + TP_PROTO(const struct devlink *devlink, bool incoming, + unsigned long type, const u8 *buf, size_t len), + + TP_ARGS(devlink, incoming, type, buf, len), + + TP_STRUCT__entry( + __string(bus_name, devlink->dev->bus->name) + __string(dev_name, dev_name(devlink->dev)) + __string(owner_name, devlink->dev->driver->owner->name) + __field(bool, incoming) + __field(unsigned long, type) + __dynamic_array(u8, buf, len) + __field(size_t, len) + ), + + TP_fast_assign( + __assign_str(bus_name, devlink->dev->bus->name); + __assign_str(dev_name, dev_name(devlink->dev)); + __assign_str(owner_name, devlink->dev->driver->owner->name); + __entry->incoming = incoming; + __entry->type = type; + memcpy(__get_dynamic_array(buf), buf, len); + __entry->len = len; + ), + + TP_printk("bus_name=%s dev_name=%s owner_name=%s incoming=%d type=%lu buf=0x[%*phD] len=%lu", + __get_str(bus_name), __get_str(dev_name), + __get_str(owner_name), __entry->incoming, __entry->type, + (int) __entry->len, __get_dynamic_array(buf), __entry->len) +); + +#endif /* _TRACE_DEVLINK_H */ + +/* This part must be outside protection */ +#include <trace/define_trace.h> + +#else /* CONFIG_NET_DEVLINK */ + +#if !defined(_TRACE_DEVLINK_H) +#define _TRACE_DEVLINK_H + +#include <net/devlink.h> + +static inline void trace_devlink_hwmsg(const struct devlink *devlink, + bool incoming, unsigned long type, + const u8 *buf, size_t len) +{ +} + +#endif /* _TRACE_DEVLINK_H */ + +#endif |