linux-kernel - Re: Trailing periods in kernel messages

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Date:	Fri, 21 Dec 2007 11:15:10 +0100 (CET)
From:	Jan Engelhardt <jengelh@...putergmbh.de>
To:	Andrew Morton <akpm@...ux-foundation.org>
cc:	Frans Pop <elendil@...net.nl>, Alan Cox <alan@...rguk.ukuu.org.uk>,
	Andy Whitcroft <apw@...dowen.org>,
	Joe Perches <joe@...ches.com>, Li Zefan <lizf@...fujitsu.com>,
	linux-kernel@...r.kernel.org, tglx@...utronix.de,
	trivial@...nel.org, Randy Dunlap <rdunlap@...otime.net>,
	Joel Schopp <jschopp@...tin.ibm.com>
Subject: Re: Trailing periods in kernel messages


On Dec 20 2007 18:15, Andrew Morton wrote:
>
>No-period is a kernel idiom, produces perfectly readable output, I have
>never ever heard of anyone expressing the least concern over a lack of dots
>at the end of their printks and 91% of kernel code agrees.

Let's check out some real-world messages, i.e. the ones you actually see:

11:12 ichi:~/Coding/linux-2.6_nosov > dmesg | grep '\.$' 

[   16.520364] Total of 1 processors activated (3334.94 BogoMIPS).
[   16.746692] Completing Region/Field/Buffer/Package initialization:.............................................................................
[   16.751681] Initializing Device/Processor/Thermal objects by executing _INI methods:.
[   16.761402] Enabling SiS 96x SMBus.
[   16.765700] ACPI: PCI Interrupt Link [LNKC] (IRQs 3 4 5 7 10 11 12 14 15) *0, disabled.
[   16.768126] ACPI: PCI Interrupt Link [LNKG] (IRQs 3 4 5 7 10 11 12 14 15) *0, disabled.
[   16.812932] Time: tsc clocksource has been installed.
[   16.863799]   IO window: disabled.
[   16.993286] Machine check exception polling timer started.
[   17.023249] isapnp: Scanning for PnP cards...
[   17.484975] libata version 2.21 loaded.
[   23.684850] 0000:00:04.0: Realtek RTL8201 PHY transceiver found at address 1.
[   23.695501] eth0: SiS 900 PCI Fast Ethernet at 0xdc00, IRQ 19, 00:0a:e6:98:ed:d7.
[   25.341019] nvidia: module license 'NVIDIA' taints kernel.
[   63.215338] Netfilter messages via NETLINK v0.30.
[  151.770648] /dev/vmmon[2792]: VMCI: Driver initialized.
[  152.906489] /dev/vmnet: hub 0 does not exist, allocating memory.
[  153.325793] /dev/vmnet: hub 1 does not exist, allocating memory.
[  164.114371] agpgart: Found an AGP 2.0 compliant device at 0000:00:00.0.
[  164.114405] agpgart: SiS delay workaround: giving bridge time to recover.
[  165.319145] Installing knfsd (copyright (C) 1996 okir@...ad.swb.de).

# vmware fills up dmesg. Shrug.
11:14 ichi:~/Coding/linux-2.6_nosov > dmesg|grep -v vmmon|wc -l
297
11:14 ichi:~/Coding/linux-2.6_nosov > dmesg|grep -v vmmon|grep '\.$' | wc -l
18

So yeah 91% is a good call.
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