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Date: Tue, 7 Apr 2015 17:47:00 +0600
Message-ID: <CANCZXo7VkpDdzAYR7Mw3=v_v=ckRje7rTjK-2upKd3bBo4Mefw@mail.gmail.com>
Subject: Re: [PATCH 1/2 v2] x86_64/earlyprintk: setup earlyprintk as early as possible
From: Alexander Kuleshov <kuleshovmail@gmail.com>
To: Ingo Molnar <mingo@kernel.org>
Cc: Thomas Gleixner <tglx@linutronix.de>, Ingo Molnar <mingo@redhat.com>,
        "H. Peter Anvin" <hpa@zytor.com>,
        Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        LKML <linux-kernel@vger.kernel.org>
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2015-04-07 17:35 GMT+06:00 Ingo Molnar <mingo@kernel.org>:
>
>
> 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?
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