[Intel-gfx] [PATCH igt] core/sighelper: Send SIGUSR1 to everyone in the process group

[Chris Wilson]

On Thu, Jan 07, 2016 at 09:07:03AM +0000, 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 interrupting the children (as we hope to trigger races in our
> kernel code). raise(-pid) sends the signal to all members of the process

s/raise/kill/ oops.

> group, not just the target pid.
-Chris

-- 
Chris Wilson, Intel Open Source Technology Centre