linux-kernel - Re: [PATCH printk v3 09/40] um: kmsg_dump: use console_is

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Date:   Wed, 9 Nov 2022 15:57:29 +0100
From:   Petr Mladek <pmladek@...e.com>
To:     John Ogness <john.ogness@...utronix.de>
Cc:     Sergey Senozhatsky <senozhatsky@...omium.org>,
        Steven Rostedt <rostedt@...dmis.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        linux-kernel@...r.kernel.org, Richard Weinberger <richard@....at>,
        Anton Ivanov <anton.ivanov@...bridgegreys.com>,
        Johannes Berg <johannes@...solutions.net>,
        linux-um@...ts.infradead.org
Subject: Re: [PATCH printk v3 09/40] um: kmsg_dump: use console_is_enabled()

On Wed 2022-11-09 15:56:11, Petr Mladek wrote:
> On Mon 2022-11-07 15:22:07, John Ogness wrote:
> > Replace (console->flags & CON_ENABLED) usage with console_is_enabled().
> > 
> > Signed-off-by: John Ogness <john.ogness@...utronix.de>
> > ---
> >  arch/um/kernel/kmsg_dump.c | 2 +-
> >  1 file changed, 1 insertion(+), 1 deletion(-)
> > 
> > diff --git a/arch/um/kernel/kmsg_dump.c b/arch/um/kernel/kmsg_dump.c
> > index 40abf1e9ccb1..f0233e2f8de0 100644
> > --- a/arch/um/kernel/kmsg_dump.c
> > +++ b/arch/um/kernel/kmsg_dump.c
> > @@ -32,7 +32,7 @@ static void kmsg_dumper_stdout(struct kmsg_dumper *dumper,
> >  		 * expected to output the crash information.
> >  		 */
> >  		if (strcmp(con->name, "ttynull") != 0 &&
> > -		    (con->flags & CON_ENABLED)) {
> > +		    console_is_enabled(con)) {
> 
> Same as with the 9th patch. I would merge this with the patch
> switching to the srcu console list iterator. It will explain
> why the racy check is needed here. This change does not make
> sense without the other.

Ah, this was supposed to be for the 10th patch.

I am sorry for confusion.

Best Regards,
Petr