Tuesday, 2023-05-16

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AdrianTheFirstJaMa, thanks for the help yesterday. We decided to go the route of disabling the version-going-backwards globally for now, rather than taking the more complicated route of setting up a PR_service.06:11
AdrianTheFirstOur Yocto build on the build server start from scratch most of the time, so the version history is lost.06:12
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JaMakhem: https://patchwork.yoctoproject.org/project/oe/patch/20230515113620.42510-2-Martin.Jansa@gmail.com/ might be still needed, but lets see the oe-core fix from rburton first06:43
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LetoThe2ndyo dudX06:46
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*** ChanServ sets mode: +o LetoThe2nd07:15
*** ChanServ changes topic to "Welcome to the Yocto Project | Learn more: https://www.yoctoproject.org | Join us or Speak at Yocto Project Developer Day at Prague, June 26th 2023: https://summit.yoctoproject.org/devday-at-eoss-2023/cfp | Join the community: https://www.yoctoproject.org/community | IRC logs available at https://www.yoctoproject.org/irc/ | Having difficulty on the list or with someone on the list, c"07:15
*** ChanServ changes topic to ""Welcome to the Yocto Project | Learn more: https://www.yoctoproject.org | Join us or Speak at Yocto Project Developer Day at Prague, June 26th 2023: https://summit.yoctoproject.org/devday-at-eoss-2023/cfp | Join the community: https://www.yoctoproject.org/community | IRC logs available at https://www.yoctoproject.org/irc/ | Having difficulty on the list or with someone on the list, "07:15
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*** ChanServ changes topic to ""Welcome to the Yocto Project | Learn more: https://www.yoctoproject.org | Join us or Speak at Yocto Project Developer Day at Prague, June 26th 2023: https://summit.yoctoproject.org/devday-at-eoss-2023/cfp | Join the community: https://www.yoctoproject.org/community | IRC logs: https://www.yoctoproject.org/irc/ | Having difficulty on the list or with someone on the list, contact YP CM Le"07:18
*** ChanServ changes topic to ""Welcome to the Yocto Project | Learn more: https://www.yoctoproject.org | Join us or Speak at Yocto Project Developer Day at Prague, June 26th 2023: https://summit.yoctoproject.org/devday-at-eoss-2023/cfp | Community: https://www.yoctoproject.org/community | IRC logs: https://www.yoctoproject.org/irc/ | Having difficulty on the list or with someone on the list, contact YP CM Letothe2nd""07:18
LetoThe2ndI fit the topic in! YAY!07:18
svuorelayou just need a shorter name :P07:20
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LetoThe2ndsvuorela: indeed. maybe I should call myself "L".07:27
LetoThe2ndOTOH, the CFP link for Prague is just too long...07:27
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svuorelaLetoThe2nd: oh. there is also quotes around topic. That seems unneeded07:36
LetoThe2ndyup indeed.07:37
qschulzLetoThe2nd: we need a URL shortener: yp.dev07:51
LetoThe2ndqschulz: LOL I'm just one week in and my first thought is "Not another thing to care about!"07:52
LetoThe2ndis that a good sign, or not?07:52
qschulzLetoThe2nd: hehehe :)07:53
qschulzprioritizing stuff is a good thing :)07:53
LetoThe2ndya07:54
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Guest45is the git.yoctoproject.org server down? I'm getting fetcher errors and doing a: git clone git@git.yoctoproject.org:pseudo -b oe-core just freezes?09:22
mcfriskGuest45: git access works for me, server responds on time09:25
Guest45mcfrisk: thanks for testing, strange, I'm not getting anything through the git protocol from two different servers, https works fine though...09:27
mcfriskGuest45: try https protocol, it's recommended nowadays09:31
Guest45@mcfr09:38
Guest45mcfrisk: anyway to set the default protocol? The recipe I'm having problems fetching is https://git.yoctoproject.org/poky/tree/meta/recipes-devtools/pseudo/pseudo_git.bb?h=dunfell09:38
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mcfriskGuest45: add ";protocol=https" to the SRC_URI line. Looks like poky commit 1285f78ce861a92dbb99f476b49499574259e615 is not yet applied in dunfell branch.09:42
Guest45mcfrisk: ok, thanks for you help!09:43
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Guest98i have a question about emmc write but it's related with yocto and emmc knowledge. may i ask? rookiee here O_O10:58
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rburtonfeel free to ask10:59
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Guest98I'm trying to write the image created in imx8mq(coral dev board) board to emmc. By the way, using "meta-coral(zeus)". Encountering the following error:10:59
Guest98https://pastebin.com/ya5q9bzU10:59
Guest98After investigating the problem, people said that these partitions should not be read only mode. I did the following step to get it out of read-only mode.10:59
Guest98https://pastebin.com/VsyJhagu10:59
Guest98When i reboot, the configurations are gone. How can i get an image installed on the sd card to be uploaded to emmc when i insert it into the device? emmc is working with mendel os but not working with yocto.10:59
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qschulzGuest98: this is something that needs to be done on each boot as this is an eMMC controller configuration AFAIR11:42
qschulzso do the echo before this copy is done11:42
qschulzhighly recommend doing only one at a time11:42
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qschulzand properly switch the eMMC boot partition to use for booting when flashing one11:43
qschulzso that if you have a power loss during a flash of boot partition 0, you boot from boot partition 1 next try11:43
qschulzat least less likely to be completely bricked11:43
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Guest98qschulz It's hard to be a rookie :D. I will try to understand what you say and try to do something. Thank you!11:46
qschulzGuest98: https://manpages.debian.org/testing/mmc-utils/mmc.1.en.html#bootpart11:48
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d-s-eHey, I try to build a rust application with yocto, but it fails with "error running rustfmt: Os { code: 2, kind: NotFound, message: "No such file or directory" }". Any ideas?12:48
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rburtond-s-e: looks like you need a dependency on whatever provides rustfmt?  (note: i've never done rust)13:14
d-s-emaybe. rustfmt is available on the build host, but it seems not to be used. I also tried to add a a rustfmt recipe that fails with lots of errors (I'm not really into rust either).13:18
rburtontools on the build host are not visible unless they're in HOSTTOOLS13:19
rburtonrustfmt appears to be part of the rust recipe, so dunno13:20
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d-s-eso I could  simply append it to HOSTTOOLS?13:23
d-s-epart of the rust recipe?13:24
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d-s-eWTH is canadian? I see several packages with that in the name!?13:30
jboHey guys, I am currently trying to get a custom board running. So far everything works. But I am struggling with the sound. I put an SSM2603 on the board. It's connected over I2C and to I2S0 of the SAMA5D. I am really lost on the DTS setup for this. Would anybody be willing to give me a hand?13:33
rburtond-s-e: https://en.wikipedia.org/wiki/Cross_compiler#Canadian_Cross13:35
d-s-erburton: thanks, very confusing. The rustfmt is part of the rust-tools-cross-canadian recipe, so does this mean, it will not be build to run natively on the build host?13:47
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rburtonyou'd do better waiting for someone who understands how rust is built to get back to you.  that recipe doesn't even exist in mickledore.13:49
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d-s-ethanks anyway, rust looks like a very strange half-baked thing to me so far. I'm on kirkstone.13:51
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rburtonyeah the rust recipes got rewritten post-kirkstone.  there's a mixin layer with modern rust in if you want that instead.13:53
rburtonhttps://git.yoctoproject.org/meta-lts-mixins/log/?h=kirkstone/rust-1.6813:53
d-s-eah ok, maybe that's why it's so hard :) I will have a look at that.13:54
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Peter[m]123Hi all, I'm curious what the 2023 opinion is of the gold linker / "ld-is-gold" DISTRO_FEATURE. I'm currently evaluating it internally (at Arm) and seeing very promising results, particularly in terms of memory usage when linking large cpp binaries. Would you consider patches to exercise it on the autobuilder, or even enable it by default (for supported architectures)?14:05
JaMaPeter[m]123: I'm still using it for historical reasons in some of my builds, but lld seems to be much better alternative nowadays14:06
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rburtonlld would be if you've switch to clang too, right14:10
JaMagold will also cause TMPDIR (buildpaths) QA issues everywhere, see https://github.com/openembedded/meta-openembedded/issues/675#issuecomment-150555737214:12
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rburtonsomeone should write a little lld recipe that builds just lld and test that14:17
rburtonthen again i've got a branch that adds and uses mold, switching linkers is never fun14:17
JaMaor mold :)14:17
fbreHi, maybe a special question of the SoC I use, but is it possible to map parts of the L1 oder L2 cache as heap within Linux, just for having fast RAM?14:17
LetoThe2ndfbre: there are things like MLOCK, and cache locking when it comes to RT and nanoseconds - everything else is definitely premature overoptimization, and your problem is somewhere else.14:19
rburtonreducing the amount of L1 cache for "performance" seems like the wrong thing to do :)14:20
LetoThe2ndrburton: there are rare circumstances where you can trade it for determinism. but yeah, generally such makes your system not faster, but slower - albeit more predictably slower :-)14:21
frayonly devices I know of that use on-board cache as RAM, do it as a short-term quick-boot strategy, then they configure actual dram 'late' so they can stage device startup (which can take longer then ram config) earlier14:23
fraybut that is really specialized stuff.. and as someone said, the wrong way to optimize..14:23
JaMaIn my usecase I would prefer surprisingly fast over predictably slow :)14:23
rburtonlol14:23
fbrethe firmware I develop has an algorithm module which computes 10 times faster with such fast RAM. It works well on an DSP and its operationg system (SysBios) where the cache can be mapped as fast heap. Now we are porting to Linux and I come across this question.14:24
Peter[m]123JaMa/rburton: We already depend on meta-clang (for bindgen) in our project, so I'll give ld-is-lld a test drive. Thanks.14:26
LetoThe2ndhttps://bootlin.com/doc/training/preempt-rt/preempt-rt-slides.pdf page 113 ff, in case you are interested.14:26
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fbreSo I read your answers as "no, we don't know how to map the cache as another heap", right?14:34
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rburtonfbre: you're asking an incredibly specific question on the general yocto project support channel14:43
fbreyes, it's true, I should ask in the SoC forum, but I just wanted to know if Linux allows such mapping of hardware components to own heaps with own address ranges14:44
fbre...which is a general question independent of the hardware14:45
fbreas I said, the TI operating system (Sys BIOS) has that feature of mapping the L1 and L2 cache hardware to special heap address ranges. This makes things so fast on a DSP. World is turning and so we have to get that working on Linux too14:47
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fbre... on the DSP you separate the actual algorithm firmware module from the maintenance system14:48
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fbre...for which controlling fast heap makes much sense that way14:49
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fbreThanx anyway, I'll ask in the SoC forum14:50
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khemrburton: lld would need llvm backend to be available for build, technically we can repurpose the llvm recipe in oe-core to provide that and then have a recipe for lld, however if you use meta-clang then it lld comes by default as part of tool suite and all you need is ls-is-lld in DISTRO_FEATURES 🙂15:39
khemerr ld-is-lld15:40
khemI have been using it in yoe distro for a long time now15:40
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khemmold is inder AGPL-3 hmmm interesting15:59
jboHey guys, I'm running into an issue where I do  "bitbake -c menuconfig virtual/kernel". change settings, then same them. then do a build and the settings are reverted next time. I did not have this problem before my meta-custom layer added a patch for a DTS. is there something obvious I am missing?16:00
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smurraykhem: heh, I saw your discussion about lld and was wondering about the current state of mold myself16:06
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rburtonmold is 'interesting'16:16
rburtonin my lame testing, it wasn't hugely faster16:16
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jboGuys, is there any magic to having a persistent custom kernel config in my own layer? I have  meta-custom/recipes-kernel/linux/linux-mchp_6.1.22.bbappend. In there, I have an SRC_URI:append = "file://defconfig"  and in the same directory I have "defconfig".  However, changes do not seem to apply.16:30
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dariodo you have a line like FILESEXTRAPATHS:prepend := "${THISDIR}:" or similar?16:52
darioiirc if anything, only the files/ subdir is automatically added to the files search path16:52
jboyes, I have that16:55
jboI am still investigating16:55
jbothe documentation mentions ${THISDIR}/${PN}:  instead. I am not sure yet what ${PN} actually is.16:55
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khemrburton: mold has a commercial offering called sold 🙂 so I guess thats the play17:05
dariojbo: the package name, i guess it's a matter of taste/repo organization which one you choose17:06
jboaye, I think I got it working now. I removed some stuff, compiled the image and stuff seems to be gone. also doing a  bitbake -c menuconfig virtual/kernel  now shows those options disabled17:07
darioi guess in general bitbake -e [recipename] | less lets you search whether it includes all the files you expect it to17:08
jboI think I never struggled with something as much as getting this SSM2603 codec to show up as a device under ALSA. I still don't have it working. I don't understand the DTS :D17:09
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rburtonkhem: yeah18:31
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LetoThe2ndwhat is the strategy for cargo dependencies in rust (kirkstone)? write a recipe each?19:45
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jbohmm... is there a driver somewhere for the Quectel-EC25?20:18
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kergothUgh, getting a no provider message with no info on what depended on it, so no idea what's pulling it into the build with the wrong provider dep22:21
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