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From: Sergey Senozhatsky <sergey.senozhatsky.work@gmail.com>
To: Petr Mladek <pmladek@suse.com>
Cc: Sergey Senozhatsky <sergey.senozhatsky.work@gmail.com>,
	Sergey Senozhatsky <sergey.senozhatsky@gmail.com>,
	Jan Kara <jack@suse.cz>,
	Andrew Morton <akpm@linux-foundation.org>,
	Tejun Heo <tj@kernel.org>, Calvin Owens <calvinowens@fb.com>,
	linux-kernel@vger.kernel.org
Subject: Re: [RFC][PATCH 6/7] printk: use alternative printk buffers
Date: Wed, 5 Oct 2016 10:36:57 +0900	[thread overview]
Message-ID: <20161005013657.GB9539@swordfish> (raw)
In-Reply-To: <20161004122226.GE13369@pathway.suse.cz>

On (10/04/16 14:22), Petr Mladek wrote:
[..]
> 	if (retry && console_trylock())
> 		goto again;
> 
> with a safe variant, something like
> 
> 	if (retry) {
> 		local_irq_save(flags);
> 		alt_printk_enter();
> 		lock_failed = console_trylock();
> 		alt_printk_exit();
> 		local_irq_restore(flags);
> 
> 		if (!lock_failed)
> 			goto again;
> 	}
> 
> Or do I miss anything?

nope, you don't. that's close to what I do in v3.

> I am going to look at the second version of the patchset.

thanks a lot for your review!

I'll refresh the patch set a bit later this week. I think it's more
or less in shape now.... well, still under the old name: alt_printk.

	-ss

  reply	other threads:[~2016-10-05  1:37 UTC|newest]

Thread overview: 35+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-09-27 14:22 [RFC][PATCH 0/7] printk: use alt_printk to handle printk() recursive calls Sergey Senozhatsky
2016-09-27 14:22 ` [RFC][PATCH 1/7] printk: use vprintk_func in vprintk() Sergey Senozhatsky
2016-09-27 14:22 ` [RFC][PATCH 2/7] printk: rename nmi.c and exported api Sergey Senozhatsky
2016-09-27 14:22 ` [RFC][PATCH 3/7] printk: introduce per-cpu alt_print seq buffer Sergey Senozhatsky
2016-09-29 12:26   ` Petr Mladek
2016-09-30  1:05     ` Sergey Senozhatsky
2016-09-30 11:35       ` Petr Mladek
2016-09-27 14:22 ` [RFC][PATCH 4/7] printk: make alt_printk available when config printk set Sergey Senozhatsky
2016-09-27 14:22 ` [RFC][PATCH 5/7] printk: drop vprintk_func function Sergey Senozhatsky
2016-09-27 14:22 ` [RFC][PATCH 6/7] printk: use alternative printk buffers Sergey Senozhatsky
2016-09-29 13:00   ` Petr Mladek
2016-09-30  1:15     ` Sergey Senozhatsky
2016-09-30 11:15       ` Petr Mladek
2016-10-01  2:48         ` Sergey Senozhatsky
2016-10-04 12:22           ` Petr Mladek
2016-10-05  1:36             ` Sergey Senozhatsky [this message]
2016-10-05 10:18               ` Petr Mladek
2016-10-03  7:53         ` Sergey Senozhatsky
2016-10-04 14:52         ` Petr Mladek
2016-10-05  1:27           ` Sergey Senozhatsky
2016-10-05  9:50             ` Petr Mladek
2016-10-06  4:22               ` Sergey Senozhatsky
2016-10-06 11:32                 ` Petr Mladek
2016-10-10  4:09                   ` Sergey Senozhatsky
2016-10-10 11:17                     ` Petr Mladek
2016-10-11  7:35                       ` Sergey Senozhatsky
2016-10-11  9:30                         ` Petr Mladek
2016-09-27 14:22 ` [RFC][PATCH 7/7] printk: new printk() recursion detection Sergey Senozhatsky
2016-09-29 13:19   ` Petr Mladek
2016-09-30  2:00     ` Sergey Senozhatsky
2016-09-29 13:25 ` [RFC][PATCH 0/7] printk: use alt_printk to handle printk() recursive calls Petr Mladek
2016-09-30  2:43   ` Sergey Senozhatsky
2016-09-30 11:27     ` Petr Mladek
2016-10-01  3:02       ` Sergey Senozhatsky
2016-10-04 11:35         ` Petr Mladek

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