diff options
| author | Steven Rostedt <srostedt@redhat.com> | 2010-04-20 10:47:33 -0400 |
|---|---|---|
| committer | Steven Rostedt <rostedt@goodmis.org> | 2010-05-14 09:33:49 -0400 |
| commit | 8f0820183056ad26dabc0202115848a92f1143fc (patch) | |
| tree | c9e1cb9d41e37d5075704efbde3c97121820e0c5 /kernel/trace/trace_export.c | |
| parent | 23e117fa44429cc054cb27d5621d64e4ced91e52 (diff) | |
tracing: Create class struct for events
This patch creates a ftrace_event_class struct that event structs point to.
This class struct will be made to hold information to modify the
events. Currently the class struct only holds the events system name.
This patch slightly increases the size, but this change lays the ground work
of other changes to make the footprint of tracepoints smaller.
With 82 standard tracepoints, and 618 system call tracepoints
(two tracepoints per syscall: enter and exit):
text data bss dec hex filename
4913961 1088356 861512 6863829 68bbd5 vmlinux.orig
4914025 1088868 861512 6864405 68be15 vmlinux.class
This patch also cleans up some stale comments in ftrace.h.
v2: Fixed missing semi-colon in macro.
Acked-by: Frederic Weisbecker <fweisbec@gmail.com>
Acked-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Acked-by: Masami Hiramatsu <mhiramat@redhat.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Diffstat (limited to 'kernel/trace/trace_export.c')
| -rw-r--r-- | kernel/trace/trace_export.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/kernel/trace/trace_export.c b/kernel/trace/trace_export.c index e091f64ba6c..7f16e216381 100644 --- a/kernel/trace/trace_export.c +++ b/kernel/trace/trace_export.c @@ -18,6 +18,10 @@ #undef TRACE_SYSTEM #define TRACE_SYSTEM ftrace +struct ftrace_event_class event_class_ftrace = { + .system = __stringify(TRACE_SYSTEM), +}; + /* not needed for this file */ #undef __field_struct #define __field_struct(type, item) @@ -160,7 +164,7 @@ __attribute__((__aligned__(4))) \ __attribute__((section("_ftrace_events"))) event_##call = { \ .name = #call, \ .id = type, \ - .system = __stringify(TRACE_SYSTEM), \ + .class = &event_class_ftrace, \ .raw_init = ftrace_raw_init_event, \ .print_fmt = print, \ .define_fields = ftrace_define_fields_##call, \ |