Commit 5f9468ce authored by Mathieu Desnoyers's avatar Mathieu Desnoyers Committed by Linus Torvalds

Linux Kernel Markers: document format string

Describes the format string standard further: Use of field names before the
type specifiers..
Signed-off-by: default avatarMathieu Desnoyers <mathieu.desnoyers@polymtl.ca>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 314de8a9
......@@ -35,12 +35,14 @@ In order to use the macro trace_mark, you should include linux/marker.h.
And,
trace_mark(subsystem_event, "%d %s", someint, somestring);
trace_mark(subsystem_event, "myint %d mystring %s", someint, somestring);
Where :
- subsystem_event is an identifier unique to your event
- subsystem is the name of your subsystem.
- event is the name of the event to mark.
- "%d %s" is the formatted string for the serializer.
- "myint %d mystring %s" is the formatted string for the serializer. "myint" and
"mystring" are repectively the field names associated with the first and
second parameter.
- someint is an integer.
- somestring is a char pointer.
......
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