* The timer softirq on the RT kernel [not found] ` <DDCAE26804250545B9934A2056554AA021106A54@ORSMSX112.amr.corp.intel.com> @ 2016-08-05 0:36 ` yunhong jiang 2016-08-05 2:36 ` Mike Galbraith 0 siblings, 1 reply; 3+ messages in thread From: yunhong jiang @ 2016-08-05 0:36 UTC (permalink / raw) To: umgwanakikbuti; +Cc: linux-kernel, linux-rt-users, rostedt Hi,Mike & Steven On https://lkml.org/lkml/2015/3/24/1178, the patch of "timers: do not raise softirq unconditionally" is reverted. Thanks for Steven's detailed comments, it's quite clear explained. I remember Mike has a patch trying to fix it but late abandoned. Do you still have any plan to work on this? Otherwise, I will have a try. Thanks --jyh ^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: The timer softirq on the RT kernel 2016-08-05 0:36 ` The timer softirq on the RT kernel yunhong jiang @ 2016-08-05 2:36 ` Mike Galbraith 2016-08-05 20:17 ` yunhong jiang 0 siblings, 1 reply; 3+ messages in thread From: Mike Galbraith @ 2016-08-05 2:36 UTC (permalink / raw) To: yunhong jiang; +Cc: linux-kernel, linux-rt-users, rostedt On Thu, 2016-08-04 at 17:36 -0700, yunhong jiang wrote: > Hi,Mike & Steven > On https://lkml.org/lkml/2015/3/24/1178, the patch of "timers: > do not raise softirq unconditionally" is reverted. Thanks for > Steven's > detailed comments, it's quite clear explained. > I remember Mike has a patch trying to fix it but late > abandoned. Do you still have any plan to work on this? Otherwise, I > will have a try. Sebastian converted the lock to raw in -rt, so nohz_full now works without any extra hackery. -Mike ^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: The timer softirq on the RT kernel 2016-08-05 2:36 ` Mike Galbraith @ 2016-08-05 20:17 ` yunhong jiang 0 siblings, 0 replies; 3+ messages in thread From: yunhong jiang @ 2016-08-05 20:17 UTC (permalink / raw) To: Mike Galbraith; +Cc: linux-kernel, linux-rt-users, rostedt On Fri, 05 Aug 2016 04:36:23 +0200 Mike Galbraith <umgwanakikbuti@gmail.com> wrote: > On Thu, 2016-08-04 at 17:36 -0700, yunhong jiang wrote: > > Hi,Mike & Steven > > On https://lkml.org/lkml/2015/3/24/1178, the patch of > > "timers: do not raise softirq unconditionally" is reverted. Thanks > > for Steven's > > detailed comments, it's quite clear explained. > > I remember Mike has a patch trying to fix it but late > > abandoned. Do you still have any plan to work on this? Otherwise, I > > will have a try. > > Sebastian converted the lock to raw in -rt, so nohz_full now works > without any extra hackery. Hi, Mike, thanks for reply and the update. I still noticed timer softirq on my isolated CPUs, possibly something wrong on my environment. I will re-check it. Thanks --jyh > > -Mike ^ permalink raw reply [flat|nested] 3+ messages in thread
end of thread, other threads:[~2016-08-05 20:24 UTC | newest]
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2016-08-05 0:36 ` The timer softirq on the RT kernel yunhong jiang
2016-08-05 2:36 ` Mike Galbraith
2016-08-05 20:17 ` yunhong jiang
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