Displaying 3 results from an estimated 3 matches for "timekeeping_advance".
2018 Sep 18
1
[patch 09/11] x86/vdso: Simplify the invalid vclock case
...CPU1 is slightly behind the TSC on CPU0 then now1 can be
> smaller than cycle_last. The TSC sync stuff does not catch the small delta
> for unknown raisins. I'll go and find that machine and test that again.
Of course it does not trigger anymore. We accumulated code between the
point in timekeeping_advance() where the TSC is read and the update of the
VDSO data.
I'll might have to get an 2.6ish kernel booted on that machine and try with
that again. /me shudders
Thanks,
tglx
2018 Sep 18
3
[patch 09/11] x86/vdso: Simplify the invalid vclock case
On Tue, Sep 18, 2018 at 12:41:57PM +0200, Thomas Gleixner wrote:
> On Tue, 18 Sep 2018, Thomas Gleixner wrote:
> > On Tue, 18 Sep 2018, Thomas Gleixner wrote:
> > > On Tue, 18 Sep 2018, Peter Zijlstra wrote:
> > > > > Your memory serves you right. That's indeed observable on CPUs which
> > > > > lack TSC_ADJUST.
> > > >
> >
2018 Sep 18
3
[patch 09/11] x86/vdso: Simplify the invalid vclock case
On Tue, Sep 18, 2018 at 12:41:57PM +0200, Thomas Gleixner wrote:
> On Tue, 18 Sep 2018, Thomas Gleixner wrote:
> > On Tue, 18 Sep 2018, Thomas Gleixner wrote:
> > > On Tue, 18 Sep 2018, Peter Zijlstra wrote:
> > > > > Your memory serves you right. That's indeed observable on CPUs which
> > > > > lack TSC_ADJUST.
> > > >
> >