[lkml]   [2017]   [Nov]   [28]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
SubjectRe: [PATCH RT] fix IPI balancing for 4.14-rt
On 2017-11-27 17:25:21 [-0500], Steven Rostedt wrote:
> On Thu, 23 Nov 2017 18:25:39 +0100
> Sebastian Andrzej Siewior <> wrote:
> > I cherry-picked commit 4bdced5c9a29 ("sched/rt: Simplify the IPI based
> > RT balancing logic") and while refreshing the queue I noticed that the
> > irq_work struct moved and added the fix below into the original patch
> > where the IRQ_WORK_HARD_IRQ flag was added.
> Perhaps you should keep it as a separate patch. 4bdced5c9a29 is now in
> mainline. The next time you port to mainline, you may drop this fix,
> and cause the scheduling IPI to run in threaded context (which would be
> bad).
> Having it as a separate patch, would remind us that it would need to be
> added to mainline in the future.

That patch in v4.14 rt-devel RT git tree has it as one commit. The patch
in RT queue has the IRQ_WORK_HARD_IRQ added in the patch where that flag
was introduced. For reference:

> Feel free to add to that that patch:
> Signed-off-by: Steven Rostedt (VMware) <>
> -- Steve


 \ /
  Last update: 2017-11-28 09:32    [W:0.099 / U:0.472 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site