Re: [PATCH 1/2 v2] x86_64/earlyprintk: setup earlyprintk as early as possible

From: Alexander Kuleshov
Date: Tue Apr 07 2015 - 07:47:07 EST


2015-04-07 17:35 GMT+06:00 Ingo Molnar <mingo@xxxxxxxxxx>:
>
>
> So if you set up earlyprintk via CONFIG_CMDLINE_OVERRIDE it just
> works?
>

Look, how i did it. I set:

CONFIG_CMDLINE_BOOL =y
CONFIG_CMDLINE_OVERRIDE =y

and passed following string:

[=root=/dev/sdb earlyprintk=ttyS0 loglevel=7 debug rdinit=/sbin/init
root=/dev/ram memblock=debug]

to the CONFIG_CMDLINE.

Now i put two early_printk calls before and after earlyprintk initialization:

early_printk("before setup_early_printk \n");
setup_early_printk(boot_command_line);
early_printk("after setup_early_printk \n");

And i don't see first string, but see last.

Did i make something wrong?
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/