[ltt-dev] [PATCH take2 01/13] make marker_entry permanent
Mathieu Desnoyers
compudj at krystal.dyndns.org
Mon Mar 2 20:14:52 EST 2009
* Lai Jiangshan (laijs at cn.fujitsu.com) wrote:
> Mathieu Desnoyers 写道:
> >>
> >> +int ltt_channel_alive(const char *channel)
> >> +{
> >> + int ret;
> >> + mutex_lock(<t_channel_mutex);
> >> + ret = !!atomic_read(&index_kref.refcount);
> >> + mutex_unlock(<t_channel_mutex);
> >
> > Why are you taking the ltt_channel_mutex to read a variable atomically ?
> > There is probably something you intend to protect (race between stopping
> > to use a channel and removing a marker), but I am pretty much sure this
> > locking does not do what you intend.
> >
> > Mathieu
> >
> >> + return ret;
> >> +}
> >> +
>
>
> Hi, Mathieu,
>
> You can feel free to fix patches(comments, changelog, code) and
> merge them.
>
OK. By the way, thanks for doing all this work, this saves me a lot of
time. I'll take care of the last mile and get the patches in shape to
merge them into LTTng.
Mathieu
> Lai.
>
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--
Mathieu Desnoyers
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