linux-kernel - [PATCH 0/2] x86/earlyprintk: setup earlyprintk as early as possible

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Date:	Wed,  8 Apr 2015 15:31:06 +0600
From:	Alexander Kuleshov <kuleshovmail@...il.com>
To:	Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...hat.com>,
	"H. Peter Anvin" <hpa@...or.com>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Yinghai Lu <yinghai@...nel.org>
Cc:	linux-kernel@...r.kernel.org
Subject: [PATCH 0/2] x86/earlyprintk: setup earlyprintk as early as possible

As setup_early_printk passed to the early_param, it will be usable only after
'parse_early_param' function will be called from the 'setup_arch'. So we have
earlyprintk during early boot and decompression. Next point after decompression
of the kernel where we can use early_printk is after call of the
'parse_early_param'.

This patch provides initialization of earlyprintk serial console as early
as possible in the arch/x86/kerne/head{32,64}.c

Alexander Kuleshov (2):
  x86/setup: update boot_command_line with builtin_cmdline in separate
    function
  x86/earlyprintk: setup earlyprintk as early as possible

 arch/x86/kernel/early_printk.c |  2 +-
 arch/x86/kernel/head.c         | 14 ++++++++++++++
 arch/x86/kernel/head32.c       |  3 +++
 arch/x86/kernel/head64.c       |  8 +++++++-
 arch/x86/kernel/setup.c        | 31 ++++++++++++++++++-------------
 include/linux/init.h           |  6 +++++-
 include/linux/printk.h         |  4 ++++
 kernel/printk/printk.c         | 11 +++++++----
 8 files changed, 59 insertions(+), 20 deletions(-)

-- 
2.3.3.611.g09038fc.dirty

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