Re: [BUGREPORT] Tasklet scheduled issue in Linux 3.4.x-rt

2014-03-31 Thread Yijing Wang
Hi Thomas, Thanks for your reply! >> nf_defrag_ipv4 xt_state nf_conntrack usr_cache(O) acpi_cpufreq mperf >> processor thermal_sys sg hwmon iptable_filter ip_tables x_tables ixgbe(O) >> igb(O) bonding(O) tg(O) netmgmt(O) drvinstall(PO) dal(PO) dca usb_storage(O) >> uhci_hcd ehci_hcd usbcor

Re: [BUGREPORT] Tasklet scheduled issue in Linux 3.4.x-rt

2014-03-31 Thread Yijing Wang
>> Because this patch does not exist in the latest Linus kernel, so I >> have not reported this issue to kernel bugzilla. > > This patch exists in all -RT releases up to 3.12. If there is an issue > with it, it should be solved. > > If the sched bit set is and you can't get lock later then the ta

Re: [BUGREPORT] Tasklet scheduled issue in Linux 3.4.x-rt

2014-03-31 Thread Thomas Gleixner
On Mon, 3 Mar 2014, Yijing Wang wrote: > Hi list, >I found a tasklet related issue in linux-stable-rt 3.4. > > And after I revert following commit, the test result seems ok(test lasted > 40hours). > > commit 0d9f73fc1e7270a3f8709c59c913408153d9d9f8 This commit id does not exist in the offi

Re: [BUGREPORT] Tasklet scheduled issue in Linux 3.4.x-rt

2014-03-31 Thread Sebastian Andrzej Siewior
On 03/29/2014 07:35 AM, Yijing Wang wrote: > Hi Sebastian, Hi Yijing, >Thanks for your reply and help to look at it, thanks! > > I also check the tasklet state machine changes, and didn't find > clue for this issue. So I Temporarily reverted Ingo's patch, without > this patch, my test is ok.

Re: [BUGREPORT] Tasklet scheduled issue in Linux 3.4.x-rt

2014-03-28 Thread Yijing Wang
Hi Sebastian, Thanks for your reply and help to look at it, thanks! I also check the tasklet state machine changes, and didn't find clue for this issue. So I Temporarily reverted Ingo's patch, without this patch, my test is ok. commit 0d9f73fc1e7270a3f8709c59c913408153d9d9f8 Author: Ingo Molna

Re: [BUGREPORT] Tasklet scheduled issue in Linux 3.4.x-rt

2014-03-28 Thread Sebastian Andrzej Siewior
* Yijing Wang | 2014-03-03 17:24:39 [+0800]: >[2012-03-26 18:55:43][ 929.252312] WARNING: at kernel/softirq.c:773 >__tasklet_action+0x51/0x1a0() >[2012-03-27 03:41:06][ 3647.886005] WARNING: at kernel/softirq.c:773 >__tasklet_action+0x51/0x1a0() >[2012-03-27 03:42:04][ 3705.434418] WARNING: at

[BUGREPORT] Tasklet scheduled issue in Linux 3.4.x-rt

2014-03-03 Thread Yijing Wang
Hi list, I found a tasklet related issue in linux-stable-rt 3.4. And after I revert following commit, the test result seems ok(test lasted 40hours). commit 0d9f73fc1e7270a3f8709c59c913408153d9d9f8 Author: Ingo Molnar Date: Tue Nov 29 20:18:22 2011 -0500 tasklet: Prevent tasklets from