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| * robertmarshall runs a daily health on the iwg20m with an email to the list. | 07:39 | |
| *** robertmarshall is now known as rajm | 07:40 | |
| rajm | unfortunately the BBB got left at home - let me see if I can find an appropriate cable for a spare board... | 07:41 |
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| * rajm runs a daily health on the BBB with an email to the list. | 07:56 | |
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| szlin | #startmeeting | 08:00 |
| szlin | #roll call | 08:00 |
| szlin | please say hi if you're around | 08:00 |
| szlin | ._./ | 08:00 |
| gavinlai | hi | 08:00 |
| Tzongyen_Lin | hi | 08:00 |
| bwh | hi | 08:00 |
| patersonc | hi | 08:00 |
| wagi | hi (partial around, also on a telco in parallel) | 08:00 |
| szlin | #topic AI review | 08:01 |
| rajm | hi | 08:01 |
| szlin | - AI: Create a wiki page for collaboration (SZ Lin) | 08:01 |
| szlin | * https://wiki.linuxfoundation.org/civilinfrastructureplatform/linux-4.4.y | 08:01 |
| szlin | Any suggestions? | 08:01 |
| patersonc | When you say "ACK: SZ Lin...", is it for the patches listed above? | 08:02 |
| szlin | that's right | 08:02 |
| patersonc | Okay | 08:03 |
| szlin | ack the patch each by each | 08:03 |
| iwamatsu | Hi | 08:03 |
| szlin | because some patches are not in CIP kernel maintenance scope | 08:03 |
| szlin | feel free to provide any idea afterwards. | 08:04 |
| szlin | -AI: Discuss patchwork item in TSC meeting (Chris) | 08:04 |
| szlin | *Example: https://patchwork.kernel.org/project/linux-renesas-soc/list/ | 08:04 |
| patersonc | I think the outcome of the discussion about patchwork was that no one saw any issues with using patchwork, or proposed any alternitives | 08:05 |
| patersonc | Does anyone here have any other views? | 08:05 |
| patersonc | iwamatsu? (as the main maintainer going forward...) | 08:05 |
| szlin | patersonc: which one do you prefer? https://patchwork.ozlabs.org/ or https://patchwork.kernel.org/ | 08:06 |
| iwamatsu | patersonc: patchwork makes it easy to understand the state of the patch, I think. I agree using pathcwork. | 08:07 |
| patersonc | I don't have a strong opinion, but kernel.org seems more 'legit', but only because I've never really heard of ozlabs until last week... | 08:07 |
| patersonc | iwamatsu: Okay | 08:08 |
| patersonc | szlin: Either would be fine | 08:08 |
| szlin | Any objections? | 08:08 |
| szlin | #agreed CIP kernel maintenance team will use patchwork | 08:09 |
| szlin | patersonc: do you need any assistence with this AI? | 08:10 |
| patersonc | Only if someone is keen to set it up. If no one is then I'll pick it up. | 08:11 |
| szlin | anyone? | 08:12 |
| patersonc | I'll email kernel.org first and see if they'll take us. If not I'll try ozlabs. | 08:12 |
| szlin | #action patersonc will apply patchwork for CIP kernel maintenance team | 08:13 |
| szlin | patersonc: thanks! | 08:13 |
| patersonc | No worries | 08:13 |
| szlin | #topic kernel maintenance updates | 08:13 |
| szlin | Moxa UC-2100 dts was merged, I will check if we have any other in-house patches | 08:14 |
| szlin | https://www.lkml.org/lkml/2018/9/28/880 | 08:14 |
| szlin | furthermore, I've sent CVE-2018-10880 kernel patch for 4.4.y | 08:15 |
| szlin | https://www.spinics.net/lists/stable/msg260103.html | 08:15 |
| patersonc | Great | 08:15 |
| szlin | === 4.4.155 reviewing === | 08:15 |
| szlin | I am taking my personal leave until next week, and thus I don't have any updates. | 08:15 |
| wagi | v4.4-rt update: Peter Z recommended to use ticket spinlocks for -rt instead of qspinlocks. I retested v4.4-rt with ticket spinlocks and the problem are gone. | 08:16 |
| szlin | wow... | 08:16 |
| szlin | wagi: do you find out the root cause? | 08:16 |
| wagi | it is still under investigation | 08:16 |
| wagi | pretty nasty stuff | 08:17 |
| szlin | wagi: true.. thanks for your update | 08:17 |
| bwh | Ticket spinlocks are what mainline uses, right? | 08:17 |
| wagi | mainline uses qspinlocks these days | 08:17 |
| bwh | Oh I see | 08:17 |
| wagi | qspinlocks scale easily up to hundreds of cpu | 08:18 |
| wagi | while ticket spinlocks is usuless for system with more then 16 cpus (if all cpus spin on the same lock, obviously) | 08:18 |
| szlin | some references about kernel lock - http://events17.linuxfoundation.org/sites/events/files/slides/linuxcon-2014-locking-final.pdf | 08:19 |
| szlin | I'm not quite familiar with qspinlocks | 08:19 |
| wagi | the concept is 'easy' but the implementation is really really hard stuff | 08:20 |
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| wagi | anyway for 4.4-rt it is solved | 08:21 |
| szlin | wagi: that's interesting, I will take a look with it afterwards, thanks | 08:21 |
| wagi | I guess for 4.9 fixex could be backported | 08:21 |
| wagi | bigeasy has done it for 4.9-rt | 08:21 |
| wagi | the problem is that there are quite a few dependencies (atomics API changes etc) | 08:22 |
| wagi | I shut up if no one has question now :) | 08:23 |
| szlin | wagi: do you have related URL with 4.9-rt? | 08:23 |
| wagi | IIRC bigeasy has not posted anything, still WIP | 08:24 |
| wagi | I suppose any fix will go via Greg KH's stable trees | 08:25 |
| wagi | I'll ask bigeasy what he's plan are | 08:25 |
| szlin | wagi: Please keep us posted on the status :) | 08:26 |
| wagi | sure will do | 08:26 |
| szlin | any other points? | 08:26 |
| szlin | 3 | 08:26 |
| szlin | 2 | 08:26 |
| szlin | 1 | 08:26 |
| szlin | #topic kernel testing | 08:26 |
| rajm | hi - there's a MR in for the change to b@d device types to get iwg20m - some discussion around whether using zImage directly is ok | 08:27 |
| rajm | I'm running daily tests on both BBB and iwg20m when in the office | 08:28 |
| rajm | still having issues with uboot and lava-docker will discuss later | 08:28 |
| rajm | thanks | 08:28 |
| szlin | rajm: thanks for the updates. | 08:29 |
| szlin | any questions? | 08:29 |
| szlin | 3 | 08:30 |
| szlin | 2 | 08:30 |
| patersonc | o/ Update from Renesas | 08:30 |
| szlin | 1 | 08:30 |
| patersonc | We were getting somewhere with the CIP LAVA master setup, but then the admin rebuilt the docker container from scratch rather than saved the instance before a reboot, so now we need to create all the user accounts and exchange passwords over the phone again. | 08:30 |
| szlin | patersonc: thanks. | 08:31 |
| szlin | any other points? | 08:31 |
| patersonc | Nope | 08:31 |
| szlin | #topic AOB | 08:31 |
| szlin | any points? | 08:32 |
| bwh | The Debian kernel team had a meeting on Tuesday evening | 08:32 |
| bwh | We agreed to use 4.19 for the buster release | 08:32 |
| patersonc | Thanks bwh | 08:33 |
| wagi | Is 4.19 going to be a LTS? | 08:33 |
| bwh | yes | 08:33 |
| patersonc | I assume there are therefore no outstanding reasons for CIP not to use LTS v4.19 for the next SLTS? | 08:34 |
| szlin | #info Debian 10 (buster) selects 4.19 kernel | 08:34 |
| patersonc | Is this something the maintainers should take to the TSC (and maybe announce to the world at ELC?) | 08:34 |
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| iwamatsu | debian kernel team meeting log: http://meetbot.debian.net/debian-kernel/2018/debian-kernel.2018-10-02-18.33.html | 08:34 |
| szlin | iwamatsu: thank you for the link. | 08:35 |
| toscalix | thanks | 08:36 |
| szlin | patersonc: yes, I think 4.19 might be the version of SLTS | 08:36 |
| patersonc | "Might"? Is there any reason it wouldn't be? | 08:37 |
| szlin | patersonc: we need the official announcement | 08:37 |
| toscalix | there won't be | 08:38 |
| patersonc | szlin: Good point | 08:38 |
| patersonc | So assuming v4.19 _is_ an LTS, we will take it? If for some reason Greg doesn't use v4.19 afterall we'll have a rethink | 08:38 |
| bwh | right | 08:39 |
| patersonc | bwh: Is this basically the same view for Buster? Or will you use v4.19.y regardless? | 08:39 |
| bwh | We want to use an LTS version | 08:40 |
| patersonc | Okay | 08:40 |
| szlin | there is very little information about 4.19 | 08:41 |
| szlin | any other points? | 08:42 |
| szlin | 3 | 08:42 |
| szlin | 2 | 08:42 |
| szlin | 1 | 08:43 |
| szlin | #endmeeting | 08:43 |
| szlin | thanks all | 08:43 |
| patersonc | Thanks | 08:43 |
| Tzongyen_Lin | thanks | 08:43 |
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| bwh | Thanks | 08:43 |
| iwamatsu | thanks | 08:43 |
| wagi | patersonc: we still meet for the breakfast, right? | 08:44 |
| szlin | patersonc: Typically, greg will post an announcement in his blog with stable kernel selection | 08:44 |
| szlin | e.g., http://www.kroah.com/log/blog/2017/09/06/4-dot-14-equals-equals-this-years-lts-kernel/ | 08:44 |
| patersonc | wagi: Sure :) Monday before the maintainers meeting? | 08:44 |
| patersonc | szlin: yep - thanks. | 08:45 |
| wagi | patersonc: Nice. Yes, before the meeting | 08:45 |
| patersonc | Oh one more point - I'm adding information about the iwg20m board to the cip wiki pages | 08:45 |
| patersonc | How to build the BSP etc. | 08:45 |
| patersonc | (not really Kernel maintenance, but perhaps useful) | 08:46 |
| patersonc | If anyone has any information on the other reference platforms it would be good to add it | 08:46 |
| patersonc | https://wiki.linuxfoundation.org/civilinfrastructureplatform/cipreferencehardware | 08:46 |
| toscalix | patersonc: nice | 08:47 |
| patersonc | I'm not very familiar with the other reference hardware - can anyone check I have the names correct? | 08:47 |
| rajm | yes thanks patersonc ! | 08:48 |
| patersonc | It's been on my todo list for over a year... | 08:49 |
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| rajm | thanks bwh I've now merged https://gitlab.com/cip-project/cip-testing/board-at-desk-single-dev/merge_requests/63 - the iwg20m change | 13:45 |
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| toscalix | szlin: still around? | 15:11 |
| toscalix | bwh just sent the kernel config analysis | 15:12 |
| szlin | toscalix: yes, I'm here | 15:13 |
| szlin | got it, we will check it. | 15:17 |
| szlin | bwh: toscalix : thanks! | 15:17 |
| toscalix | it was the pending task missing from bwh as maintainer | 15:21 |
| toscalix | so we are done | 15:21 |
| toscalix | until the new maintainer request something | 15:22 |
| toscalix | related with the handover of the maintainer role | 15:22 |
| toscalix | now... bwh changes hats | 15:22 |
| toscalix | :-) | 15:22 |
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| patersonc | Well done bwh :) | 16:02 |
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