linux-kernel - Q: When do files in /proc change their times?

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Message-Id: <4F8BF2FD020000A1000097D2@gwsmtp1.uni-regensburg.de>
Date:	Mon, 16 Apr 2012 10:22:53 +0200
From:	"Ulrich Windl" <Ulrich.Windl@...uni-regensburg.de>
To:	<linux-kernel@...r.kernel.org>
Subject: Q: When do files in /proc change their times?

Hello!

I have a simple question: When do files in /proc show changed modification times?
Specifically: When is "/proc/sys/kernel/random/boot_id" expected to change ist time?

I found out that usually the "file" doesn't change ist modification times, so I expected the modification times to change when the content changes. Obviously a wrong assumption: No reboot, but the file date changed.

According to syslog there was nothing special, but I did install some software packages (SLES11 SP1 (2.6.32.54-0.3-xen), no kernel) some seconds before that.

Maybe some kind soul could answer and CC: me as I'm not subscribed to the kernel list.

Regards,
Ulrich Windl

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