linux-kernel - Re: Question about /proc/uptime

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Tue, 31 Dec 2013 22:17:39 -0600
From:	Rob Landley <rob@...dley.net>
To:	Martin Schwidefsky <schwidefsky@...ibm.com>,
	Oleg Nesterov <oleg@...hat.com>
CC:	linux-kernel@...r.kernel.org,
	Frederic Weisbecker <fweisbec@...il.com>
Subject: Re: Question about /proc/uptime

On 12/30/13 09:26, Martin Schwidefsky wrote:
> On Mon, 30 Dec 2013 16:11:10 +0100
> Oleg Nesterov <oleg@...hat.com> wrote:
>> Not sure I understand... except that timekeeping_resume() does
>> __timekeeping_inject_sleeptime().
>
> Hmm, you are right. The sleeptime is added to the monotonic boottime.
> So the first value of /proc/uptime is the wall-time since boot.
> And the second value is combined idle time over all cpus.

Is there an obvious way to query the non-suspend uptime from userspace?

Rob
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/