Re: [PATCH] Relay CPU Hotplug support
Andrew Morton <[email protected]>
| Newsgroups | gmane.linux.systemtap,gmane.linux.kernel,gmane.linux.kernel.tracing |
|---|---|
| Message-ID | <[email protected]> |
On Fri, 22 Dec 2006 16:07:24 +0530 Gautham R Shenoy <[email protected]> wrote: > While we are at this per-subsystem cpuhotplug "locking", here's a > proposal that might put an end to the workqueue deadlock woes. Oleg is working on some patches which will permit us to cancel or wait upon a particular work_struct, rather than upon all pending work_structs. This will fix the problem where we accidentlly wait upon some unrelated work_struct which takes a lock which is related to one which we already hold. I hope. It'll be a bit tricky to implement: if some foreign work_struct is running right now, we cannot wait upon it - we must non-blockingly dequeue the work_struct which we want to kill before it gets to run.