From: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
To: Peter Zijlstra <peterz@infradead.org>
Cc: pmladek@suse.com, sergey.senozhatsky@gmail.com,
linux-kernel@vger.kernel.org, rostedt@goodmis.org,
mingo@kernel.org, tglx@linutronix.de
Subject: Re: [PATCH 0/3] printk: Add force_early_printk boot param
Date: Fri, 29 Sep 2017 01:02:30 +0900 [thread overview]
Message-ID: <20170928160230.GA606@tigerII.localdomain> (raw)
In-Reply-To: <20170928121823.430053219@infradead.org>
On (09/28/17 14:18), Peter Zijlstra wrote:
> Most all printk() bits are terminally broken because they rely on the scheduler
> and blocking locks to function, making them unsuitable for debugging the
> scheduler and NMI context things.
hold on... wait a second... the scheduler is not lockless yet? darn...
ok, I think having something like that in printk.c wouldn't hurt. Petr
was going to take a look, IIRC.
but what's up with that scheduler thing I keep hearing about, must be
something new, can I disable it in kconfig? it seems to be conflicting
with CONFIG_PRINTK.
-ss
next prev parent reply other threads:[~2017-09-28 16:02 UTC|newest]
Thread overview: 38+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-09-28 12:18 Peter Zijlstra
2017-09-28 12:18 ` [PATCH 1/3] printk: Fix kdb_trap_printk placement Peter Zijlstra
2017-10-03 22:10 ` Steven Rostedt
2017-10-05 13:38 ` Petr Mladek
2017-10-05 13:42 ` Peter Zijlstra
2017-10-09 15:05 ` Petr Mladek
2017-10-12 9:45 ` Petr Mladek
2017-10-12 10:03 ` Petr Mladek
2017-10-12 11:34 ` Peter Zijlstra
2017-10-12 11:52 ` Greg Kroah-Hartman
2017-10-12 12:08 ` Greg Kroah-Hartman
2017-10-12 18:11 ` Joe Perches
2017-10-13 14:23 ` Petr Mladek
2017-10-12 11:30 ` Peter Zijlstra
2017-09-28 12:18 ` [PATCH 2/3] early_printk: Add force_early_printk kernel parameter Peter Zijlstra
2017-09-28 15:41 ` Randy Dunlap
2017-09-28 16:07 ` Peter Zijlstra
2017-09-28 17:05 ` Randy Dunlap
2017-10-03 22:18 ` Steven Rostedt
2017-10-12 10:24 ` Petr Mladek
2017-10-12 11:39 ` Peter Zijlstra
2017-10-13 13:06 ` Petr Mladek
2017-10-13 13:20 ` Peter Zijlstra
2017-10-13 13:30 ` Steven Rostedt
2017-09-28 12:18 ` [PATCH 3/3] early_printk: Add simple serialization to early_vprintk() Peter Zijlstra
2017-10-03 22:24 ` Steven Rostedt
2017-10-04 9:08 ` Peter Zijlstra
2017-10-04 13:04 ` Steven Rostedt
2017-10-04 13:08 ` Peter Zijlstra
2017-10-04 14:17 ` Paul E. McKenney
2017-10-04 14:43 ` Steven Rostedt
2017-10-04 14:52 ` Peter Zijlstra
2017-10-04 15:02 ` Steven Rostedt
2017-10-04 15:14 ` Paul E. McKenney
2017-10-04 15:24 ` Peter Zijlstra
2017-10-04 15:38 ` Paul E. McKenney
2017-09-28 16:02 ` Sergey Senozhatsky [this message]
2017-09-28 16:17 ` [PATCH 0/3] printk: Add force_early_printk boot param Peter Zijlstra
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