linux-kernel - Re: [PATCH next v3 10/15] printk: add syslog

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Message-ID: <YD0fRwBUIatXX6sl@alley>
Date:   Mon, 1 Mar 2021 18:07:19 +0100
From:   Petr Mladek <pmladek@...e.com>
To:     John Ogness <john.ogness@...utronix.de>
Cc:     Sergey Senozhatsky <sergey.senozhatsky.work@...il.com>,
        Sergey Senozhatsky <sergey.senozhatsky@...il.com>,
        Steven Rostedt <rostedt@...dmis.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH next v3 10/15] printk: add syslog_lock

On Thu 2021-02-25 21:24:33, John Ogness wrote:
> The global variables @syslog_seq, @syslog_partial, @syslog_time
> and write access to @clear_seq are protected by @logbuf_lock.
> Once @logbuf_lock is removed, these variables will need their
> own synchronization method. Introduce @syslog_lock for this
> purpose.
> 
> @syslog_lock is a raw_spin_lock for now. This simplifies the
> transition to removing @logbuf_lock. Once @logbuf_lock and the
> safe buffers are removed, @syslog_lock can change to spin_lock.
> 
> Signed-off-by: John Ogness <john.ogness@...utronix.de>

Reviewed-by: Petr Mladek <pmladek@...e.com>

Best Regards,
Petr