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From: Alexander Kuleshov <kuleshovmail@gmail.com>
To: Thomas Gleixner <tglx@linutronix.de>,
	Ingo Molnar <mingo@redhat.com>, "H. Peter Anvin" <hpa@zytor.com>,
	Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	Yinghai Lu <yinghai@kernel.org>
Cc: linux-kernel@vger.kernel.org
Subject: [PATCH 0/2] x86/earlyprintk: setup earlyprintk as early as possible
Date: Wed,  8 Apr 2015 15:31:06 +0600	[thread overview]
Message-ID: <1428485466-24326-1-git-send-email-kuleshovmail@gmail.com> (raw)

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


             reply	other threads:[~2015-04-08  9:31 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-04-08  9:31 Alexander Kuleshov [this message]
2015-04-08  9:31 ` [PATCH 1/2] x86/setup: update boot_command_line with builtin_cmdline in separate function Alexander Kuleshov
2015-04-08  9:31 ` [PATCH 2/2] x86/earlyprintk: setup earlyprintk as early as possible Alexander Kuleshov
2015-04-08 11:32   ` Peter Hurley
2015-04-09  7:39     ` Alexander Kuleshov
2015-05-10 19:13 [PATCH 0/2] " Alexander Kuleshov
2015-05-11  7:27 ` Andy Shevchenko
2015-05-11  9:56   ` Alexander Kuleshov

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