linux-kernel - Re: [PATCH v3 2/4] objtool: Move orc outside of check

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Date:   Thu, 30 Jul 2020 09:15:26 -0500
From:   Josh Poimboeuf <jpoimboe@...hat.com>
To:     Julien Thierry <jthierry@...hat.com>
Cc:     peterz@...radead.org, linux-kernel@...r.kernel.org, mbenes@...e.cz
Subject: Re: [PATCH v3 2/4] objtool: Move orc outside of check

On Thu, Jul 30, 2020 at 02:29:20PM +0100, Julien Thierry wrote:
> 
> 
> On 7/30/20 2:22 PM, peterz@...radead.org wrote:
> > On Thu, Jul 30, 2020 at 01:40:42PM +0100, Julien Thierry wrote:
> > > 
> > > 
> > > On 7/30/20 10:57 AM, peterz@...radead.org wrote:
> > > > On Thu, Jul 30, 2020 at 10:41:41AM +0100, Julien Thierry wrote:
> > > > > +		if (file->elf->changed)
> > > > > +			return elf_write(file->elf);
> > > > > +		else
> > > > > +			return 0;
> > > > >    	}
> > > > 
> > > > I think we can do without that else :-)
> > > > 
> > > 
> > > I did wonder and was not 100% confident about it, but the orc gen will
> > > always change the file, correct?
> > 
> > Not if it already has orc, iirc.
> > 
> > But what I was trying to say is that:
> > 
> > 	if (file->elf->changed)
> > 		return elf_write(file->elf)
> > 
> > 	return 0;
> > 
> > is identical code and, IMO, easier to read.
> > 
> 
> Much easier yes, I'll change it.

But I think file->elf->changed can be assumed at this point anyway, so
it could just be an unconditional

	return elf_write(file->elf);

-- 
Josh