lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening PHC | |
Open Source and information security mailing list archives
| ||
|
Date: Sat, 20 Sep 2014 20:01:48 +0200 From: Peter Zijlstra <peterz@...radead.org> To: Joe Perches <joe@...ches.com> Cc: Jan Kara <jack@...e.cz>, Steven Rostedt <rostedt@...dmis.org>, Markus Trippelsdorf <markus@...ppelsdorf.de>, Geert Uytterhoeven <geert@...ux-m68k.org>, "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>, Andrew Morton <akpm@...ux-foundation.org> Subject: Re: [PATCH] printk: git rid of [sched_delayed] message for printk_deferred On Sat, Sep 20, 2014 at 09:10:47AM -0700, Joe Perches wrote: > On Sat, 2014-09-20 at 17:47 +0200, Peter Zijlstra wrote: > > On a whole, printk() is entirely useless for debugging these days, its > > far too fragile/unreliable to be taken seriously so I really don't care > > on that point either. > > That's unfortunate. > > Care to enumerate the issues that you believe make > printk too fragile/unreliable for debugging? Look at what it takes to end up at console->write(), and then realize that some console implementations require scheduling and other nonsense to actually implement ->write(). The (only) reliable option is early_printk() with the early_serial_console driver. The rest is useless crap these days. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Powered by blists - more mailing lists