On 26/01/21 12:35, Xu, Like wrote:
Ah, now we have the v3 version on guest PEBS feature.
It does not rely on counter_freezing, but disables the co-existence of
guest PEBS and host PEBS.
I am not clear about your attitude towards this co-existence.
There are also more interesting topics for
On Tue, Jan 26, 2021 at 10:51:39AM +0100, Paolo Bonzini wrote:
> What is the state of this work? I was expecting a new version that doesn't
> use counter_freezing. However, I see that counter_freezing is still in
> there, so this patch from Peter has never been applied.
Bah, I forgot about it.
On 2021/1/26 17:51, Paolo Bonzini wrote:
On 11/11/20 03:42, Xu, Like wrote:
Hi Peter,
On 2020/11/11 4:52, Stephane Eranian wrote:
On Tue, Nov 10, 2020 at 7:37 AM Peter Zijlstra
wrote:
On Tue, Nov 10, 2020 at 04:12:57PM +0100, Peter Zijlstra wrote:
On Mon, Nov 09, 2020 at 10:12:37AM +0800,
On 11/11/20 03:42, Xu, Like wrote:
Hi Peter,
On 2020/11/11 4:52, Stephane Eranian wrote:
On Tue, Nov 10, 2020 at 7:37 AM Peter Zijlstra
wrote:
On Tue, Nov 10, 2020 at 04:12:57PM +0100, Peter Zijlstra wrote:
On Mon, Nov 09, 2020 at 10:12:37AM +0800, Like Xu wrote:
The Precise Event Based
Hi Peter,
On 2020/11/10 23:37, Peter Zijlstra wrote:
-static int __init intel_perf_counter_freezing_setup(char *s)
-{
- bool res;
-
- if (kstrtobool(s, ))
- return -EINVAL;
-
- disable_counter_freezing = !res;
- return 1;
-}
-__setup("perf_v4_pmi=",
On Tue, Nov 10, 2020 at 12:52:04PM -0800, Stephane Eranian wrote:
> What is implemented is Freeze-on-Overflow, yet it is described as
> Freeze-on-PMI.
> That, in itself, is a problem. I agree with you on that point.
Exactly.
> However, there are use cases for both modes.
>
> I can sample on
Hi Peter,
On 2020/11/11 4:52, Stephane Eranian wrote:
On Tue, Nov 10, 2020 at 7:37 AM Peter Zijlstra wrote:
On Tue, Nov 10, 2020 at 04:12:57PM +0100, Peter Zijlstra wrote:
On Mon, Nov 09, 2020 at 10:12:37AM +0800, Like Xu wrote:
The Precise Event Based Sampling(PEBS) supported on Intel Ice
On Tue, Nov 10, 2020 at 7:37 AM Peter Zijlstra wrote:
>
> On Tue, Nov 10, 2020 at 04:12:57PM +0100, Peter Zijlstra wrote:
> > On Mon, Nov 09, 2020 at 10:12:37AM +0800, Like Xu wrote:
> > > The Precise Event Based Sampling(PEBS) supported on Intel Ice Lake server
> > > platforms can provide an
On Tue, Nov 10, 2020 at 04:12:57PM +0100, Peter Zijlstra wrote:
> On Mon, Nov 09, 2020 at 10:12:37AM +0800, Like Xu wrote:
> > The Precise Event Based Sampling(PEBS) supported on Intel Ice Lake server
> > platforms can provide an architectural state of the instruction executed
> > after the
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