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Re: [PATCH 2/2] tracing: Export ftrace API for kernel modules
- From: Peter Zijlstra <peterz at infradead dot org>
- To: Atsushi Tsuji <a-tsuji at bk dot jp dot nec dot com>
- Cc: linux-kernel at vger dot kernel dot org, rostedt at goodmis dot org, Ingo Molnar <mingo at elte dot hu>, fweisbec at gmail dot com, "Frank Ch. Eigler" <fche at redhat dot com>, paulus at samba dot org, systemtap at sources dot redhat dot com
- Date: Tue, 15 Sep 2009 12:11:19 +0200
- Subject: Re: [PATCH 2/2] tracing: Export ftrace API for kernel modules
- References: <4AAF6728.6010807@bk.jp.nec.com>
On Tue, 2009-09-15 at 19:06 +0900, Atsushi Tsuji wrote:
> Export register_ and unresgister_ftrace_function_probe to modules. This can
> be used by SystemTap.
Its unusual to export bits without an in-kernel user.
> Signed-off-by: Atsushi Tsuji <a-tsuji@bk.jp.nec.com>
> ---
> kernel/trace/ftrace.c | 2 ++
> 1 files changed, 2 insertions(+), 0 deletions(-)
>
> diff --git a/kernel/trace/ftrace.c b/kernel/trace/ftrace.c
> index 5ef8f59..9c32291 100644
> --- a/kernel/trace/ftrace.c
> +++ b/kernel/trace/ftrace.c
> @@ -2042,6 +2042,7 @@ register_ftrace_function_probe(char *glob, struct ftrace_probe_ops *ops,
>
> return count;
> }
> +EXPORT_SYMBOL_GPL(register_ftrace_function_probe);
>
> enum {
> PROBE_TEST_FUNC = 1,
> @@ -2108,6 +2109,7 @@ unregister_ftrace_function_probe(char *glob, struct ftrace_probe_ops *ops,
> __unregister_ftrace_function_probe(glob, ops, data,
> PROBE_TEST_FUNC | PROBE_TEST_DATA);
> }
> +EXPORT_SYMBOL_GPL(unregister_ftrace_function_probe);
>
> void
> unregister_ftrace_function_probe_func(char *glob, struct ftrace_probe_ops *ops)