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authorSteven Rostedt <srostedt@redhat.com>2010-04-22 18:46:14 -0400
committerSteven Rostedt <rostedt@goodmis.org>2010-05-14 14:20:32 -0400
commita9a5776380208a3e48a92d0c763ee1a3b486fb73 (patch)
tree5ecd41c3b373e2156f5bf748ae777e022296a30c /kernel/trace/trace_branch.c
parent0405ab80aa94afb13bf9ac4a6fc9f2923d4b9114 (diff)
downloadlinux-a9a5776380208a3e48a92d0c763ee1a3b486fb73.tar.bz2
tracing: Allow events to share their print functions
Multiple events may use the same method to print their data. Instead of having all events have a pointer to their print funtions, the trace_event structure now points to a trace_event_functions structure that will hold the way to print ouf the event. The event itself is now passed to the print function to let the print function know what kind of event it should print. This opens the door to consolidating the way several events print their output. text data bss dec hex filename 4913961 1088356 861512 6863829 68bbd5 vmlinux.orig 4900382 1048964 861512 6810858 67ecea vmlinux.init 4900446 1049028 861512 6810986 67ed6a vmlinux.preprint This change slightly increases the size but is needed for the next change. v3: Fix the branch tracer events to handle this change. v2: Fix the new function graph tracer event calls to handle this change. Acked-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com> Acked-by: Masami Hiramatsu <mhiramat@redhat.com> Acked-by: Frederic Weisbecker <fweisbec@gmail.com> Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Diffstat (limited to 'kernel/trace/trace_branch.c')
-rw-r--r--kernel/trace/trace_branch.c8
1 files changed, 6 insertions, 2 deletions
diff --git a/kernel/trace/trace_branch.c b/kernel/trace/trace_branch.c
index b9bc4d470177..8d3538b4ea5f 100644
--- a/kernel/trace/trace_branch.c
+++ b/kernel/trace/trace_branch.c
@@ -143,7 +143,7 @@ static void branch_trace_reset(struct trace_array *tr)
}
static enum print_line_t trace_branch_print(struct trace_iterator *iter,
- int flags)
+ int flags, struct trace_event *event)
{
struct trace_branch *field;
@@ -167,9 +167,13 @@ static void branch_print_header(struct seq_file *s)
" |\n");
}
+static struct trace_event_functions trace_branch_funcs = {
+ .trace = trace_branch_print,
+};
+
static struct trace_event trace_branch_event = {
.type = TRACE_BRANCH,
- .trace = trace_branch_print,
+ .funcs = &trace_branch_funcs,
};
static struct tracer branch_trace __read_mostly =