linux-kernel - Re: [PATCH v1] printk: Declare log

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Message-ID: <20200204112211.GA2009@jagdpanzerIV.localdomain>
Date:   Tue, 4 Feb 2020 20:22:11 +0900
From:   Sergey Senozhatsky <sergey.senozhatsky@...il.com>
To:     Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Cc:     Sergey Senozhatsky <sergey.senozhatsky.work@...il.com>,
        Petr Mladek <pmladek@...e.com>,
        Sergey Senozhatsky <sergey.senozhatsky@...il.com>,
        linux-kernel@...r.kernel.org, Steven Rostedt <rostedt@...dmis.org>
Subject: Re: [PATCH v1] printk: Declare log_wait as external variable

On (20/02/04 11:05), Andy Shevchenko wrote:
> > > --- a/kernel/printk/printk.c
> > > +extern wait_queue_head_t log_wait;	/* Used in fs/proc/kmsg.c */
> > >  DECLARE_WAIT_QUEUE_HEAD(log_wait);
> > > +#else
> > > +static DECLARE_WAIT_QUEUE_HEAD(log_wait);
> > > +#endif /* CONFIG_PROC_FS */
> > 
> > [..]
> > 
> > Since we are now introducing CONFIG_PROC_FS dependency to printk (and
> > proc/kmsg already has CONFIG_PRINTK dependency),
> 
> I'm not sure I understood. The above does not introduce any dependencies.

kernel/printk/printk.c
 +#ifdef CONFIG_PROC_FS
 ..

Not exactly "dependency"... what is the correct word here.

	-ss