From: Tom Roberts <tjroberts@lucent.com>
To: Zhaobin Zhu <zzhu@emc.com>
Cc: "'linuxppc-embedded@lists.linuxppc.org'"
<linuxppc-embedded@lists.linuxppc.org>
Subject: Re: printk() ?
Date: Wed, 27 Sep 2000 14:47:45 -0500 [thread overview]
Message-ID: <39D24EE1.10964CA@lucent.com> (raw)
In-Reply-To: 39D0F6DC.4DDB7509@emc.com
Zhaobin Zhu wrote:
> Where does printk() in linux kernel send message to ?
It normally prints to the syslogd facility, which by default makes it come
out in the file /var/log/messages and also for important enough messages
comes out on the console. Note that if you write your own console driver,
you probably need to write _two_ drivers: the actual console driver used
by printk (the read routine seems to be unused), and a serial I/O driver
which will be opened by the kernel for the init process. Console drivers
themselves do not appear in the filesystem, but are registered via
register_console(). The serial I/O device needs to appear in the filesystem
for the kernel to open it for init, so should be a standard char device.
> In which file I can find it ?
kernel/printk.c
Tom Roberts tjroberts@lucent.com
** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/
prev parent reply other threads:[~2000-09-27 19:47 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2000-09-26 18:24 switching linux kernels Julia Elbert
2000-09-26 19:19 ` printk() ? Zhaobin Zhu
2000-09-27 19:47 ` Tom Roberts [this message]
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