Re: [PATCH] allow console drivers to be called early

From: Andrew Morton
Date: Thu May 13 2004 - 21:47:37 EST

Jesse Barnes <jbarnes@xxxxxxxxxxxx> wrote:
> This is a simple patch to allow arches to set early_printk_ok if they've
> registered console drivers that support early operation. I've got an ia64
> specific bit and an sn2 specific bit that I can post for reference if
> anyone's interested, but they're pretty straightforward, so I'm just posting
> this for comments. The ia64 one just adds a register_early_consoles()
> function to the ia64 code that gets called early on in setup_arch. All it
> does is call the init routines of console drivers that are setup to do early
> printks.
> ...
> * console_sem protects the console_drivers list, and also
> @@ -526,7 +527,7 @@
> log_level_unknown = 1;
> }
> - if (!cpu_online(smp_processor_id()) &&
> + if (!early_printk_ok && !cpu_online(smp_processor_id()) &&

Is it not possible to mark this cpu as being online? It sure seems to be.

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