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| author | Steven Rostedt | 2009-02-17 05:06:01 +0100 |
|---|---|---|
| committer | Steven Rostedt | 2009-02-17 05:06:01 +0100 |
| commit | 809dcf29ce4e1723709910878e050bd187617e0e (patch) | |
| tree | 4747ede5ad0678d6ae88176f403a2c26f277182e | |
| parent | ftrace: show selected functions in set_ftrace_filter (diff) | |
| download | kernel-qcow2-linux-809dcf29ce4e1723709910878e050bd187617e0e.tar.gz kernel-qcow2-linux-809dcf29ce4e1723709910878e050bd187617e0e.tar.xz kernel-qcow2-linux-809dcf29ce4e1723709910878e050bd187617e0e.zip | |
ftrace: add pretty print to selected fuction traces
This patch adds a call back for the tracers that have hooks to
selected functions. This allows the tracer to show better output
in the set_ftrace_filter file.
Signed-off-by: Steven Rostedt <srostedt@redhat.com>
| -rw-r--r-- | include/linux/ftrace.h | 6 | ||||
| -rw-r--r-- | kernel/trace/ftrace.c | 3 |
2 files changed, 9 insertions, 0 deletions
diff --git a/include/linux/ftrace.h b/include/linux/ftrace.h index 13918c4400ad..b331e216d8a1 100644 --- a/include/linux/ftrace.h +++ b/include/linux/ftrace.h @@ -106,12 +106,18 @@ struct ftrace_func_command { /* asm/ftrace.h must be defined for archs supporting dynamic ftrace */ #include <asm/ftrace.h> +struct seq_file; + struct ftrace_hook_ops { void (*func)(unsigned long ip, unsigned long parent_ip, void **data); int (*callback)(unsigned long ip, void **data); void (*free)(void **data); + int (*print)(struct seq_file *m, + unsigned long ip, + struct ftrace_hook_ops *ops, + void *data); }; extern int diff --git a/kernel/trace/ftrace.c b/kernel/trace/ftrace.c index 1e058848cddb..6533c1d20155 100644 --- a/kernel/trace/ftrace.c +++ b/kernel/trace/ftrace.c @@ -834,6 +834,9 @@ static int t_hash_show(struct seq_file *m, void *v) rec = hlist_entry(hnd, struct ftrace_func_hook, node); + if (rec->ops->print) + return rec->ops->print(m, rec->ip, rec->ops, rec->data); + kallsyms_lookup(rec->ip, NULL, NULL, NULL, str); seq_printf(m, "%s:", str); |