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Linux Kernel Markers: document format string

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Describes the format string standard further: Use of field names before the
type specifiers..

Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Mathieu Desnoyers 2007-11-14 16:59:49 -08:00 committed by Linus Torvalds
parent 314de8a9e1
commit 5f9468cebf
1 changed files with 4 additions and 2 deletions
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6
Documentation/markers.txt
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@ -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.