Re: [Intel-gfx] [PATCH igt] core/sighelper: Interrupt everyone in the process group

2016-01-11 Thread Chris Wilson
On Mon, Jan 11, 2016 at 01:29:12PM +, Dave Gordon wrote: > On 11/01/16 12:34, Chris Wilson wrote: > >On Mon, Jan 11, 2016 at 12:25:07PM +, Dave Gordon wrote: > >>On 11/01/16 09:06, Daniel Vetter wrote: > >>>On Mon, Jan 11, 2016 at 08:54:59AM +, Chris Wilson wrote: > On Mon, Jan 11,

Re: [Intel-gfx] [PATCH igt] core/sighelper: Interrupt everyone in the process group

2016-01-11 Thread Dave Gordon
On 11/01/16 12:34, Chris Wilson wrote: On Mon, Jan 11, 2016 at 12:25:07PM +, Dave Gordon wrote: On 11/01/16 09:06, Daniel Vetter wrote: On Mon, Jan 11, 2016 at 08:54:59AM +, Chris Wilson wrote: On Mon, Jan 11, 2016 at 08:57:33AM +0100, Daniel Vetter wrote: On Fri, Jan 08, 2016 at 08:4

Re: [Intel-gfx] [PATCH igt] core/sighelper: Interrupt everyone in the process group

2016-01-11 Thread Chris Wilson
On Mon, Jan 11, 2016 at 12:25:07PM +, Dave Gordon wrote: > On 11/01/16 09:06, Daniel Vetter wrote: > >On Mon, Jan 11, 2016 at 08:54:59AM +, Chris Wilson wrote: > >>On Mon, Jan 11, 2016 at 08:57:33AM +0100, Daniel Vetter wrote: > >>>On Fri, Jan 08, 2016 at 08:44:29AM +, Chris Wilson wrot

Re: [Intel-gfx] [PATCH igt] core/sighelper: Interrupt everyone in the process group

2016-01-11 Thread Dave Gordon
On 11/01/16 09:06, Daniel Vetter wrote: On Mon, Jan 11, 2016 at 08:54:59AM +, Chris Wilson wrote: On Mon, Jan 11, 2016 at 08:57:33AM +0100, Daniel Vetter wrote: On Fri, Jan 08, 2016 at 08:44:29AM +, Chris Wilson wrote: Some stress tests create both the signal helper and a lot of compet

Re: [Intel-gfx] [PATCH igt] core/sighelper: Interrupt everyone in the process group

2016-01-11 Thread Daniel Vetter
On Mon, Jan 11, 2016 at 08:54:59AM +, Chris Wilson wrote: > On Mon, Jan 11, 2016 at 08:57:33AM +0100, Daniel Vetter wrote: > > On Fri, Jan 08, 2016 at 08:44:29AM +, Chris Wilson wrote: > > > Some stress tests create both the signal helper and a lot of competing > > > processes. In these tes

Re: [Intel-gfx] [PATCH igt] core/sighelper: Interrupt everyone in the process group

2016-01-11 Thread Chris Wilson
On Mon, Jan 11, 2016 at 08:57:33AM +0100, Daniel Vetter wrote: > On Fri, Jan 08, 2016 at 08:44:29AM +, Chris Wilson wrote: > > Some stress tests create both the signal helper and a lot of competing > > processes. In these tests, the parent is just waiting upon the children, > > and the intentio

Re: [Intel-gfx] [PATCH igt] core/sighelper: Interrupt everyone in the process group

2016-01-10 Thread Daniel Vetter
On Fri, Jan 08, 2016 at 08:44:29AM +, Chris Wilson wrote: > Some stress tests create both the signal helper and a lot of competing > processes. In these tests, the parent is just waiting upon the children, > and the intention is not to keep waking up the waiting parent, but to > keep interrupti

[Intel-gfx] [PATCH igt] core/sighelper: Interrupt everyone in the process group

2016-01-08 Thread Chris Wilson
Some stress tests create both the signal helper and a lot of competing processes. In these tests, the parent is just waiting upon the children, and the intention is not to keep waking up the waiting parent, but to keep interrupting the children (as we hope to trigger races in our kernel code). kill