linux/include/trace/events/iscsi.h
Steven Rostedt (Google) 5409b80535 scsi: iscsi: tracing: Use the new __vstring() helper
Instead of open coding a __dynamic_array() with a fixed length (which
defeats the purpose of the dynamic array in the first place). Use the new
__vstring() helper that will use a va_list and only write enough of the
string into the ring buffer that is needed.

Link: https://lkml.kernel.org/r/20220705224750.715763972@goodmis.org

Cc: Fred Herard <fred.herard@oracle.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
2022-07-19 11:20:25 -04:00

108 lines
2.3 KiB
C

#undef TRACE_SYSTEM
#define TRACE_SYSTEM iscsi
#if !defined(_TRACE_ISCSI_H) || defined(TRACE_HEADER_MULTI_READ)
#define _TRACE_ISCSI_H
#include <linux/tracepoint.h>
/* max debug message length */
#define ISCSI_MSG_MAX 256
/*
* Declare tracepoint helper function.
*/
void iscsi_dbg_trace(void (*trace)(struct device *dev, struct va_format *),
struct device *dev, const char *fmt, ...);
/*
* Declare event class for iscsi debug messages.
*/
DECLARE_EVENT_CLASS(iscsi_log_msg,
TP_PROTO(struct device *dev, struct va_format *vaf),
TP_ARGS(dev, vaf),
TP_STRUCT__entry(
__string(dname, dev_name(dev) )
__vstring(msg, vaf->fmt, vaf->va)
),
TP_fast_assign(
__assign_str(dname, dev_name(dev));
__assign_vstr(msg, vaf->fmt, vaf->va);
),
TP_printk("%s: %s",__get_str(dname), __get_str(msg)
)
);
/*
* Define event to capture iscsi connection debug messages.
*/
DEFINE_EVENT(iscsi_log_msg, iscsi_dbg_conn,
TP_PROTO(struct device *dev, struct va_format *vaf),
TP_ARGS(dev, vaf)
);
/*
* Define event to capture iscsi session debug messages.
*/
DEFINE_EVENT(iscsi_log_msg, iscsi_dbg_session,
TP_PROTO(struct device *dev, struct va_format *vaf),
TP_ARGS(dev, vaf)
);
/*
* Define event to capture iscsi error handling debug messages.
*/
DEFINE_EVENT(iscsi_log_msg, iscsi_dbg_eh,
TP_PROTO(struct device *dev, struct va_format *vaf),
TP_ARGS(dev, vaf)
);
/*
* Define event to capture iscsi tcp debug messages.
*/
DEFINE_EVENT(iscsi_log_msg, iscsi_dbg_tcp,
TP_PROTO(struct device *dev, struct va_format *vaf),
TP_ARGS(dev, vaf)
);
/*
* Define event to capture iscsi sw tcp debug messages.
*/
DEFINE_EVENT(iscsi_log_msg, iscsi_dbg_sw_tcp,
TP_PROTO(struct device *dev, struct va_format *vaf),
TP_ARGS(dev, vaf)
);
/*
* Define event to capture iscsi transport session debug messages.
*/
DEFINE_EVENT(iscsi_log_msg, iscsi_dbg_trans_session,
TP_PROTO(struct device *dev, struct va_format *vaf),
TP_ARGS(dev, vaf)
);
/*
* Define event to capture iscsi transport connection debug messages.
*/
DEFINE_EVENT(iscsi_log_msg, iscsi_dbg_trans_conn,
TP_PROTO(struct device *dev, struct va_format *vaf),
TP_ARGS(dev, vaf)
);
#endif /* _TRACE_ISCSI_H */
/* This part must be outside protection */
#include <trace/define_trace.h>