linux-kernel - Re: [PATCH 21/21] dynamic_debug: delete pending queries

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Message-ID: <CAO+b5-paNCtqwJjrg3zDxq3J3h3RX+pBgeeeR3sXRpFKt_tz+w@mail.gmail.com>
Date:	Mon, 11 Jul 2011 12:49:08 +0200
From:	Bart Van Assche <bvanassche@....org>
To:	Jim Cromie <jim.cromie@...il.com>
Cc:	jbaron@...hat.com, linux-kernel@...r.kernel.org, joe@...ches.com,
	gregkh@...e.de, gnb@...h.org
Subject: Re: [PATCH 21/21] dynamic_debug: delete pending queries

On Mon, Jul 11, 2011 at 9:46 AM, Jim Cromie <jim.cromie@...il.com> wrote:
> delete pending queries by re-issuing it with disabled flags
>
> with:
> $> echo "module foo +ap" > <debugfs>/dynamic_debug/control
> $> echo "module foo +apt" > <debugfs>/dynamic_debug/control
> $> echo "module foo ap=" > <debugfs>/dynamic_debug/control
>
> 1st command adds a pending query on foo
> 2nd command modifies it by adding a TID flag
> 3rd command deletes it by setting flags to 0
>
> Note that the pending query matches 'ap' as required by the flags-filter,
> but additionally has 't'.  An exact match on the query-spec is required,
> "module foo line 10-20" would not match, and wouldnt be removed.

Maybe I've missed something, but do we need both 'a' and 'p' ? Would
'a' alone be sufficient ?

Bart.
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