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Message-ID: <20141118141817.GG23958@pathway.suse.cz>
Date: Tue, 18 Nov 2014 15:18:17 +0100
From: Petr Mladek <pmladek@...e.cz>
To: Steven Rostedt <rostedt@...dmis.org>
Cc: linux-kernel@...r.kernel.org, Ingo Molnar <mingo@...nel.org>,
Andrew Morton <akpm@...ux-foundation.org>,
Jiri Kosina <jkosina@...e.cz>
Subject: Re: [PATCH 12/26 v5] tracing: Remove return values of most
trace_seq_*() functions
On Fri 2014-11-14 23:58:59, Steven Rostedt wrote:
> From: "Steven Rostedt (Red Hat)" <rostedt@...dmis.org>
>
> The trace_seq_printf() and friends are used to store strings into a buffer
> that can be passed around from function to function. If the trace_seq buffer
> fills up, it will not print any more. The return values were somewhat
> inconsistant and using trace_seq_has_overflowed() was a better way to know
> if the write to the trace_seq buffer succeeded or not.
>
> Now that all users have removed reading the return value of the printf()
> type functions, they can safely return void and keep future users of them
> from reading the inconsistent values as well.
>
> Link: http://lkml.kernel.org/r/20141114011411.992510720@goodmis.org
>
> Signed-off-by: Steven Rostedt <rostedt@...dmis.org>
Reviewed-by: Petr Mladek <pmladek@...e.cz>
Best Regards,
Petr
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