Re: [EXT] Re: [PATCH v4 03/13] task_isolation: userspace hard isolation from kernel

2020-10-17 Thread Thomas Gleixner
On Sat, Oct 17 2020 at 16:15, Alex Belits wrote: > On Sat, 2020-10-17 at 18:08 +0200, Thomas Gleixner wrote: >> On Sat, Oct 17 2020 at 01:08, Alex Belits wrote: >> > I think that the goal of "finding source of disturbance" interface >> > is >> > different from what can be accomplished by tracing in

Re: [EXT] Re: [PATCH v4 03/13] task_isolation: userspace hard isolation from kernel

2020-10-17 Thread Alex Belits
On Sat, 2020-10-17 at 18:08 +0200, Thomas Gleixner wrote: > On Sat, Oct 17 2020 at 01:08, Alex Belits wrote: > > On Mon, 2020-10-05 at 14:52 -0400, Nitesh Narayan Lal wrote: > > > On 10/4/20 7:14 PM, Frederic Weisbecker wrote: > > I think that the goal of "finding source of disturbance" interface

Re: [EXT] Re: [PATCH v4 03/13] task_isolation: userspace hard isolation from kernel

2020-10-17 Thread Thomas Gleixner
On Sat, Oct 17 2020 at 01:08, Alex Belits wrote: > On Mon, 2020-10-05 at 14:52 -0400, Nitesh Narayan Lal wrote: >> On 10/4/20 7:14 PM, Frederic Weisbecker wrote: > I think that the goal of "finding source of disturbance" interface is > different from what can be accomplished by tracing in two ways:

Re: [EXT] Re: [PATCH v4 03/13] task_isolation: userspace hard isolation from kernel

2020-10-16 Thread Alex Belits
On Mon, 2020-10-05 at 14:52 -0400, Nitesh Narayan Lal wrote: > On 10/4/20 7:14 PM, Frederic Weisbecker wrote: > > On Sun, Oct 04, 2020 at 02:44:39PM +, Alex Belits wrote: > > > On Thu, 2020-10-01 at 15:56 +0200, Frederic Weisbecker wrote: > > > > External Email > > > > > > > > ---

Re: [EXT] Re: [PATCH v4 03/13] task_isolation: userspace hard isolation from kernel

2020-10-16 Thread Alex Belits
On Tue, 2020-10-06 at 12:35 +0200, Frederic Weisbecker wrote: > On Mon, Oct 05, 2020 at 02:52:49PM -0400, Nitesh Narayan Lal wrote: > > On 10/4/20 7:14 PM, Frederic Weisbecker wrote: > > > On Sun, Oct 04, 2020 at 02:44:39PM +, Alex Belits wrote: > > > > > > > The idea behind this is that isol

Re: [EXT] Re: [PATCH v4 03/13] task_isolation: userspace hard isolation from kernel

2020-10-06 Thread Alex Belits
On Mon, 2020-10-05 at 01:14 +0200, Frederic Weisbecker wrote: > Speaking of which, I agree with Thomas that it's unnecessary. > > > It's > > > too much > > > code and complexity. We can use the existing trace events and > > > perform > > > the > > > analysis from userspace to find the source of the

Re: [EXT] Re: [PATCH v4 03/13] task_isolation: userspace hard isolation from kernel

2020-10-06 Thread Frederic Weisbecker
On Mon, Oct 05, 2020 at 02:52:49PM -0400, Nitesh Narayan Lal wrote: > > On 10/4/20 7:14 PM, Frederic Weisbecker wrote: > > On Sun, Oct 04, 2020 at 02:44:39PM +, Alex Belits wrote: > >> On Thu, 2020-10-01 at 15:56 +0200, Frederic Weisbecker wrote: > >>> External Email > >>> > >>> --

Re: [EXT] Re: [PATCH v4 03/13] task_isolation: userspace hard isolation from kernel

2020-10-05 Thread Nitesh Narayan Lal
On 10/4/20 7:14 PM, Frederic Weisbecker wrote: > On Sun, Oct 04, 2020 at 02:44:39PM +, Alex Belits wrote: >> On Thu, 2020-10-01 at 15:56 +0200, Frederic Weisbecker wrote: >>> External Email >>> >>> --- >>> --- >>> On Wed, Jul 22,

Re: [EXT] Re: [PATCH v4 03/13] task_isolation: userspace hard isolation from kernel

2020-10-04 Thread Frederic Weisbecker
On Sun, Oct 04, 2020 at 02:44:39PM +, Alex Belits wrote: > On Thu, 2020-10-01 at 15:56 +0200, Frederic Weisbecker wrote: > > External Email > > > > --- > > --- > > On Wed, Jul 22, 2020 at 02:49:49PM +, Alex Belits wrote: > > >

Re: [EXT] Re: [PATCH v4 03/13] task_isolation: userspace hard isolation from kernel

2020-10-04 Thread Alex Belits
On Thu, 2020-10-01 at 16:40 +0200, Frederic Weisbecker wrote: > External Email > > --- > --- > On Wed, Jul 22, 2020 at 02:49:49PM +, Alex Belits wrote: > > +/** > > + * task_isolation_kernel_enter() - clear low-level task isolati

Re: [EXT] Re: [PATCH v4 03/13] task_isolation: userspace hard isolation from kernel

2020-10-04 Thread Alex Belits
On Thu, 2020-10-01 at 15:56 +0200, Frederic Weisbecker wrote: > External Email > > --- > --- > On Wed, Jul 22, 2020 at 02:49:49PM +, Alex Belits wrote: > > +/* > > + * Description of the last two tasks that ran isolated on a given