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SubjectRe: [PATCH] tracing: Remove second parameter to __assign_rel_str()
On Fri, 23 Feb 2024 16:25:19 -0500
Steven Rostedt <rostedt@goodmis.org> wrote:

> From: "Steven Rostedt (Google)" <rostedt@goodmis.org>
>
> The second parameter of __assign_rel_str() is no longer used. It can be removed.
>
> Note, the only real users of rel_string is user events. This code is just
> in the sample code for testing purposes.
>
> This makes __assign_rel_str() different than __assign_str() but that's
> fine. __assign_str() is used over 700 places and has a larger impact. That
> change will come later.

Looks good to me.

Reviewed-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>

Thanks,

>
> Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
> ---
> include/trace/stages/stage6_event_callback.h | 2 +-
> samples/trace_events/trace-events-sample.h | 2 +-
> 2 files changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/include/trace/stages/stage6_event_callback.h b/include/trace/stages/stage6_event_callback.h
> index 935608971899..a0c15f67eabe 100644
> --- a/include/trace/stages/stage6_event_callback.h
> +++ b/include/trace/stages/stage6_event_callback.h
> @@ -91,7 +91,7 @@
> #define __rel_string_len(item, src, len) __rel_dynamic_array(char, item, -1)
>
> #undef __assign_rel_str
> -#define __assign_rel_str(dst, src) \
> +#define __assign_rel_str(dst) \
> do { \
> char *__str__ = __get_rel_str(dst); \
> int __len__ = __get_rel_dynamic_array_len(dst) - 1; \
> diff --git a/samples/trace_events/trace-events-sample.h b/samples/trace_events/trace-events-sample.h
> index 2dfaf7fc7bfa..500981eca74d 100644
> --- a/samples/trace_events/trace-events-sample.h
> +++ b/samples/trace_events/trace-events-sample.h
> @@ -574,7 +574,7 @@ TRACE_EVENT(foo_rel_loc,
> ),
>
> TP_fast_assign(
> - __assign_rel_str(foo, foo);
> + __assign_rel_str(foo);
> __entry->bar = bar;
> __assign_rel_bitmask(bitmask, mask,
> BITS_PER_BYTE * sizeof(unsigned long));
> --
> 2.43.0
>


--
Masami Hiramatsu (Google) <mhiramat@kernel.org>

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