linux-kernel - Re: [RFC][PATCH 3/7] sched,livepatch: Use task_try

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Message-ID: <YUyFgtOSB4J6wnDC@hirez.programming.kicks-ass.net>
Date:   Thu, 23 Sep 2021 15:47:46 +0200
From:   Peter Zijlstra <peterz@...radead.org>
To:     Petr Mladek <pmladek@...e.com>
Cc:     gor@...ux.ibm.com, jpoimboe@...hat.com, jikos@...nel.org,
        mbenes@...e.cz, mingo@...nel.org, linux-kernel@...r.kernel.org,
        joe.lawrence@...hat.com, fweisbec@...il.com, tglx@...utronix.de,
        hca@...ux.ibm.com, svens@...ux.ibm.com, sumanthk@...ux.ibm.com,
        live-patching@...r.kernel.org, paulmck@...nel.org
Subject: Re: [RFC][PATCH 3/7] sched,livepatch: Use task_try_func()

On Thu, Sep 23, 2021 at 03:17:17PM +0200, Peter Zijlstra wrote:
> On Thu, Sep 23, 2021 at 02:05:00PM +0200, Petr Mladek wrote:
> > I would prefer to be on the safe side and catch error codes that might
> > eventually appear in the future.
> > 
> > 	case 0:
> > 		/* success */
> > 		break;
> 
> 	case -EAGAIN:
> 		/* task_try_func() raced */
> 		break;

Also, I'll try and see if I can get rid of that one.