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| author | Masami Hiramatsu <mhiramat@redhat.com> | 2009-08-13 16:34:53 -0400 |
|---|---|---|
| committer | Frederic Weisbecker <fweisbec@gmail.com> | 2009-08-27 00:46:40 +0200 |
| commit | bd1a5c849bdcc5c89e4a6a18216cd2b9a7a8a78f (patch) | |
| tree | 1a807fef00b8a700d90683d4f1d480d95eec9669 /include/linux/ftrace_event.h | |
| parent | b1cf540f0e5278ecfe8532557e547d833ed269d7 (diff) | |
| download | lwn-bd1a5c849bdcc5c89e4a6a18216cd2b9a7a8a78f.tar.gz lwn-bd1a5c849bdcc5c89e4a6a18216cd2b9a7a8a78f.zip | |
tracing: Ftrace dynamic ftrace_event_call support
Add dynamic ftrace_event_call support to ftrace. Trace engines can add
new ftrace_event_call to ftrace on the fly. Each operator function of
the call takes an ftrace_event_call data structure as an argument,
because these functions may be shared among several ftrace_event_calls.
Changes from v13:
- Define remove_subsystem_dir() always (revirt a2ca5e03), because
trace_remove_event_call() uses it.
- Modify syscall tracer because of ftrace_event_call change.
[fweisbec@gmail.com: Fixed conflict against latest tracing/core]
Signed-off-by: Masami Hiramatsu <mhiramat@redhat.com>
Cc: Ananth N Mavinakayanahalli <ananth@in.ibm.com>
Cc: Avi Kivity <avi@redhat.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Christoph Hellwig <hch@infradead.org>
Cc: Frank Ch. Eigler <fche@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Jason Baron <jbaron@redhat.com>
Cc: Jim Keniston <jkenisto@us.ibm.com>
Cc: K.Prasad <prasad@linux.vnet.ibm.com>
Cc: Lai Jiangshan <laijs@cn.fujitsu.com>
Cc: Li Zefan <lizf@cn.fujitsu.com>
Cc: Przemysław Pawełczyk <przemyslaw@pawelczyk.it>
Cc: Roland McGrath <roland@redhat.com>
Cc: Sam Ravnborg <sam@ravnborg.org>
Cc: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Tom Zanussi <tzanussi@gmail.com>
Cc: Vegard Nossum <vegard.nossum@gmail.com>
LKML-Reference: <20090813203453.31965.71901.stgit@localhost.localdomain>
Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Diffstat (limited to 'include/linux/ftrace_event.h')
| -rw-r--r-- | include/linux/ftrace_event.h | 19 |
1 files changed, 10 insertions, 9 deletions
diff --git a/include/linux/ftrace_event.h b/include/linux/ftrace_event.h index ace2da9e0a0d..1ab3089b5c59 100644 --- a/include/linux/ftrace_event.h +++ b/include/linux/ftrace_event.h @@ -112,12 +112,12 @@ struct ftrace_event_call { struct dentry *dir; struct trace_event *event; int enabled; - int (*regfunc)(void *); - void (*unregfunc)(void *); + int (*regfunc)(struct ftrace_event_call *); + void (*unregfunc)(struct ftrace_event_call *); int id; - int (*raw_init)(void); - int (*show_format)(struct ftrace_event_call *call, - struct trace_seq *s); + int (*raw_init)(struct ftrace_event_call *); + int (*show_format)(struct ftrace_event_call *, + struct trace_seq *); int (*define_fields)(struct ftrace_event_call *); struct list_head fields; int filter_active; @@ -147,11 +147,12 @@ enum { FILTER_PTR_STRING, }; -extern int trace_define_field(struct ftrace_event_call *call, - const char *type, const char *name, - int offset, int size, int is_signed, - int filter_type); extern int trace_define_common_fields(struct ftrace_event_call *call); +extern int trace_define_field(struct ftrace_event_call *call, char *type, + char *name, int offset, int size, int is_signed, + int filter_type); +extern int trace_add_event_call(struct ftrace_event_call *call); +extern void trace_remove_event_call(struct ftrace_event_call *call); #define is_signed_type(type) (((type)(-1)) < 0) |