On 01/01/14 06:41, Martin Schwidefsky wrote:
On Tue, 31 Dec 2013 22:17:39 -0600
Rob Landley <r...@landley.net> wrote:
On 12/30/13 09:26, Martin Schwidefsky wrote:
On Mon, 30 Dec 2013 16:11:10 +0100
Oleg Nesterov <o...@redhat.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?
clock_gettime with CLOCK_MONOTONIC gives you the uptime minus without the
suspend time.
Given that the clock_gettime man page says:
CLOCK_MONOTONIC
Clock that cannot be set and represents monotonic time since
some unspecified starting point.
Can I rely on it _continuing_ to do so in future, and if so should the
man page be clarified?
Rob
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