Re: [PATCHSET] workqueue: break local execution guarantee of unbound work items

2016-02-10 Thread Tejun Heo
Hello, Jiri. On Wed, Feb 10, 2016 at 09:01:38AM +0100, Jiri Slaby wrote: > Thanks all for sorting the issue out. Now it remains to decide what > should go to stable. Given only 0001 is marked as "Fixes", is that enough? I think so. The other two are primarily for debugging anyway. > And what

Re: [PATCHSET] workqueue: break local execution guarantee of unbound work items

2016-02-10 Thread Jiri Slaby
On 02/10/2016, 12:14 AM, Tejun Heo wrote: > Hello, > > Workqueue used to implicitly guarantee local execution of unbound work > items. Recent timer updates broke that for delayed work items and the > attempt to restore it ended up causing more harm than good. It has > been decided to take the

Re: [PATCHSET] workqueue: break local execution guarantee of unbound work items

2016-02-10 Thread Tejun Heo
Hello, Jiri. On Wed, Feb 10, 2016 at 09:01:38AM +0100, Jiri Slaby wrote: > Thanks all for sorting the issue out. Now it remains to decide what > should go to stable. Given only 0001 is marked as "Fixes", is that enough? I think so. The other two are primarily for debugging anyway. > And what

Re: [PATCHSET] workqueue: break local execution guarantee of unbound work items

2016-02-10 Thread Jiri Slaby
On 02/10/2016, 12:14 AM, Tejun Heo wrote: > Hello, > > Workqueue used to implicitly guarantee local execution of unbound work > items. Recent timer updates broke that for delayed work items and the > attempt to restore it ended up causing more harm than good. It has > been decided to take the

Re: [PATCHSET] workqueue: break local execution guarantee of unbound work items

2016-02-09 Thread Linus Torvalds
On Tue, Feb 9, 2016 at 3:14 PM, Tejun Heo wrote: > > This patchset reverts 874bbfe600a6 ("workqueue: make sure delayed work > run in local cpu"), expands wq_unbound_cpu_mask so that it also > applies to unbound work items queued on percpu workqueues, and > implements a debug feature which forces

[PATCHSET] workqueue: break local execution guarantee of unbound work items

2016-02-09 Thread Tejun Heo
Hello, Workqueue used to implicitly guarantee local execution of unbound work items. Recent timer updates broke that for delayed work items and the attempt to restore it ended up causing more harm than good. It has been decided to take the chance and officially break it. This patchset reverts

[PATCHSET] workqueue: break local execution guarantee of unbound work items

2016-02-09 Thread Tejun Heo
Hello, Workqueue used to implicitly guarantee local execution of unbound work items. Recent timer updates broke that for delayed work items and the attempt to restore it ended up causing more harm than good. It has been decided to take the chance and officially break it. This patchset reverts

Re: [PATCHSET] workqueue: break local execution guarantee of unbound work items

2016-02-09 Thread Linus Torvalds
On Tue, Feb 9, 2016 at 3:14 PM, Tejun Heo wrote: > > This patchset reverts 874bbfe600a6 ("workqueue: make sure delayed work > run in local cpu"), expands wq_unbound_cpu_mask so that it also > applies to unbound work items queued on percpu workqueues, and > implements a debug