linux-kernel - Re: [PATCH] tracepoint: don't make assumptions about length of string on task rename

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Date:	Tue, 1 Sep 2015 11:32:34 -0400
From:	Steven Rostedt <rostedt@...dmis.org>
To:	Sasha Levin <sasha.levin@...cle.com>
Cc:	mingo@...hat.com, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] tracepoint: don't make assumptions about length of
 string on task rename

On Tue, 01 Sep 2015 11:07:32 -0400
Sasha Levin <sasha.levin@...cle.com> wrote:

 
> > Also, as the memcpy was just faster than a strcpy, the static length
> > was used. Perhaps we should convert that to a dynamic length string.
> > But that should be a separate patch as this one fixes a possible bug,
> > and the conversion to a dynamic string is just an enhancement.
> 
> That'll slow things down for the common case, no?

Not really that much.

The comms should have been dynamic strings too, but the sched_switch
tracepoint (the one others have been copied from) was created before we
had dynamic strings for tracepoints.

-- Steve

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