linux-kernel - Re: [PATCH V2 -tip 3/4] Tracing/ftrace: Adapt mmiotrace to the new type of print

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Message-ID: <c62985530809300625p6c178c0ew6b9619998c3d5011@mail.gmail.com>
Date:	Tue, 30 Sep 2008 15:25:42 +0200
From:	"Frédéric Weisbecker" <fweisbec@...il.com>
To:	"Steven Rostedt" <rostedt@...dmis.org>
Cc:	"Ingo Molnar" <mingo@...e.hu>, "Pekka Paalanen" <pq@....fi>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH V2 -tip 3/4] Tracing/ftrace: Adapt mmiotrace to the new type of print_line

2008/9/30 Steven Rostedt <rostedt@...dmis.org>:
>
> OK, I'll nuke the ring_buffer_lock :-/
>
> The trace_pipe calls that and then calls print_trace_line which will
> eventually lock the buffer again. This is a bug on my part. I'll fix that
> today.
>
> Thanks,

Strange, I can't see any case where print_trace_line could call the
ring_buffer_lock.
Hmm, I will see in your patch.

Ingo, I just saw one damage from the merging, trace_empty() returns
TRACE_TYPE_HANDLED. The type is wrong, it should return 1.
It's not urgent since the value is the same. Should I send a patch for
such a small error?

Thanks.
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