Keybuk | linux-tools is uninstallable on current natty :'( | 00:48 |
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lifeless | \o/ | 00:51 |
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* jjohansen reboot | 01:34 | |
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ncuster | hello, I am having the same issues building the kernel modules virtualbox via dkms that this user is: http://lists.debian.org/debian-user/2011/01/msg01508.html ... however I am using the stock pae ubuntu kernel instead of a custom built one. I installed the pae headers, but I am still having the same issue. Is there some other change I need to make so that I can build this module? | 06:05 |
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Kano | hi, how different is -6 kernel to rc8? | 12:39 |
doko_ | any idea when the fix for bug #605042 will be uploaded to lucid? | 12:48 |
ubot2 | Launchpad bug 605042 in linux-fsl-imx51 "[armel] java fails to start with eglibc-2.12-0ubuntu4" [Critical,In progress] https://launchpad.net/bugs/605042 | 12:48 |
fairuz | what is the equivalent library in kernel space for unistd.h? | 13:09 |
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smb | doko_, I saw that patch just today submitted for sru. I don't think it was committed yet and then it would need another upload which I am also not sure when that could be. | 13:12 |
smb | sconklin, bjf Would you happen to know about fsl plans for Lucid? | 13:12 |
doko_ | smb: we need the kernel on the buildd to fix it in eglibc ... | 13:14 |
tgardner | doko_, working on it... | 13:14 |
doko_ | thanks | 13:15 |
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fairuz | Hi, can I call smp_processor_id() in user space? | 14:43 |
mjg59 | fairuz: No | 14:47 |
mjg59 | fairuz: Also, unless you have affinity, it's not a meaningful thing to do | 14:48 |
mjg59 | fairuz: You could be rescheduled to a different CPU between making the call and doing something with it | 14:48 |
fairuz | mjg59: I'm running a dual core cortex-A9 | 14:48 |
fairuz | and I can set the affinity of a process | 14:48 |
mjg59 | fairuz: Then sched_getaffinity will give you your affinity | 14:49 |
fairuz | mjg59: ah ok | 14:49 |
fairuz | mjg59: so a setaffinity will affect only one process right? | 14:49 |
mjg59 | fairuz: Yes | 14:49 |
mjg59 | See man sched_setaffinity | 14:49 |
fairuz | mjg59: ok ty | 14:50 |
mjg59 | The first argument is the pid | 14:50 |
fairuz | mjg59: so basically we cant set an affinity for a program that not yet running? | 14:52 |
mjg59 | fairuz: No, but you can launch it with taskset | 14:53 |
fairuz | mjg59: hmm whats that | 14:53 |
mjg59 | fairuz: What are you actually trying to achieve? | 14:53 |
mjg59 | fairuz: A command that launches a process on a specified set of CPUs | 14:53 |
fairuz | mjg59: actually i have a program..lets call it X | 14:53 |
fairuz | that i dont want to modify its source code | 14:53 |
fairuz | and I have another program that sets some hardware registers | 14:54 |
fairuz | so basically the flow is | 14:54 |
fairuz | 1) call my program, and set something | 14:54 |
fairuz | 2) call program X | 14:54 |
fairuz | 3) call my program again to reset something and colelct data | 14:54 |
fairuz | *collect | 14:54 |
fairuz | so if possible I want all of them to run on a processor of my choice | 14:55 |
Krunch | wrap all that in a shell script that you start with taskset | 14:55 |
fairuz | I already made a shell script to launch all that | 14:55 |
Krunch | unless you mean the two need to run on different CPUs, taskset is still the solution but you use it in the shell script | 14:55 |
fairuz | Krunch: ok, I think I have all the elements, So right now I just need to launch the script from taskset | 14:56 |
Krunch | and the affinity will be inherited by its children | 14:57 |
fairuz | what taskset will do exactly? | 14:57 |
mjg59 | fairuz: taskset will set the affinity and then exec your process | 14:57 |
mjg59 | fairuz: Which will then inherit that affinity | 14:57 |
mjg59 | So taskset -c 1 myscript.sh will run myscript on cpu 1 | 14:58 |
mjg59 | And taskset -c 0 myscript.sh will run it on cpu 0 | 14:58 |
fairuz | mjg59: Ah ok, so I set the affinity on a higher level | 14:58 |
fairuz | because right now I jsut set the affinity in my program, and not in program X | 14:58 |
Krunch | s/myscript/myscript and the processes it spawns/ | 14:58 |
fairuz | and I know its wrong | 14:58 |
fairuz | Krunch: mjg59: ok thanks.. I think I get it now | 14:59 |
Krunch | well you can have the 1st program set affinity of program X as well if you know its pid but that's just more work while you can make it simpler by taking advantage of affinity inheritance | 14:59 |
fairuz | Krunch: but I dont think thats possible, because at the moment the 1st program runs, the program X is not yet launched thus it does not have any PID yet, right? | 15:00 |
Krunch | i am sure you can devise some ipc mechanism to give it the pid | 15:02 |
Krunch | but doing it that way is really useless work and complexity | 15:02 |
fairuz | Krunch: ok. I'll try taskset | 15:02 |
fairuz | So all programs launch by a script are considered the children of that script? | 15:03 |
bjf | ## | 15:03 |
bjf | ## Ubuntu Kernel Team Meeting - Today @ 17:00 UTC - #ubuntu-meeting | 15:03 |
bjf | ## agenda: https://wiki.ubuntu.com/KernelTeam/Meeting | 15:03 |
bjf | ## | 15:03 |
mjg59 | fairuz: Yes | 15:03 |
fairuz | mjg59: I hope taskset is not arch dependant since I'm using ARM | 15:04 |
fairuz | some tools are not working on ARM | 15:04 |
fairuz | =( | 15:04 |
mjg59 | I hope that too! | 15:04 |
fairuz | mjg59: Krunch: Thanks | 15:05 |
fairuz | So I imagine if I set taskset -c 3 myprog | 15:11 |
fairuz | then it up to the kernel to choose which processor it want myprog to run? | 15:12 |
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Krunch | "-c3" means to run only on the 4th cpu | 15:32 |
fairuz | Krunch: I thougth it means cpu 0 and cpu 1 are chosen> | 15:38 |
mjg59 | fairuz: No, -c is a list of CPUs, not a mask | 15:40 |
fairuz | mjg59: ok | 15:44 |
sforshee | pgraner, can you accept the natty nomination on bug 508516 | 15:48 |
ubot2 | Launchpad bug 508516 in linux "wakeup from sleep fails on toshiba nb305" [Undecided,In progress] https://launchpad.net/bugs/508516 | 15:48 |
bjf | ## | 16:30 |
bjf | ## Ubuntu Kernel Team Meeting - in 30 minutes - #ubuntu-meeting | 16:30 |
bjf | ## | 16:30 |
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Ntemis | hi | 17:13 |
Ntemis | please i need your help | 17:13 |
Ntemis | i just tried to update samba on my server and i f*** it up badly | 17:13 |
Ntemis | my server is ubuntu 10.10 and i tried to update to samba 3.5.8 from here | 17:14 |
Ntemis | ftp://ftp.sernet.de/pub/samba/3.5/debian/dists/lenny/main/binary-amd64/ | 17:14 |
Ntemis | now i am left without samba | 17:14 |
Ntemis | and this: | 17:14 |
JFo | <-lunch | 17:14 |
JFo | bbiab | 17:14 |
apw | Ntemis, you tried to update from a lenny package? i suspect that is not the best plan | 17:15 |
Ntemis | http://pastebin.com/NadhUFQg | 17:15 |
Ntemis | please help me unistall the conflicting packages | 17:16 |
Ntemis | i want my samba back :) | 17:16 |
Ntemis | could not find any deb for 3.5.8 version | 17:16 |
Ntemis | my kernel is 2.6.37.3 :) | 17:17 |
Ntemis | so i wanted to use the latest samba also, my fault | 17:17 |
Ntemis | fortunately i backed up my samba.conf | 17:18 |
apw | Ntemis, i would try and install the official version of samba | 17:18 |
apw | as the first step | 17:18 |
Ntemis | no go | 17:19 |
Ntemis | have a look in my pastebin | 17:19 |
Ntemis | packages have unmet dependencies | 17:20 |
bjf | jjohansen, just a heads up, you've been dropped from the meeting agenda :-) | 17:21 |
jjohansen | bjf: okay | 17:22 |
jjohansen | bjf: shooting for 6 min next week :) | 17:22 |
bjf | jjohansen, heh, something like that | 17:22 |
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=== bjf changed the topic of #ubuntu-kernel to: Home: https://wiki.ubuntu.com/Kernel/ || Natty Kernel Version: 2.6.38 || Ubuntu Kernel Team Meeting - March-15 - 17:00 UTC || If you have a question just ask, and do wait around for an answer! | ||
sconklin | JFo: you here? | 17:47 |
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JFo | sconklin, yep | 18:22 |
JFo | am now | 18:22 |
kamal | jjohansen: fyi, the natty toolchain problem (".size expression ...") seems to be fixed in the archive now. natty kernel build is no longer failing on Launchpad. | 19:34 |
jjohansen | kamal: oh, /me was just starting to look as I did an upgrade this morning and was seeing the failure locally | 19:39 |
* jjohansen goes to update again | 19:39 | |
jjohansen | kamal: btw thanks for the heads up | 19:39 |
kamal | jjohansen: sure :-). apw uploaded a new natty kernel, and it sees to be building fine on LP now. I've successfully built amd64 on tangerine, and am testing i386 there now. | 19:40 |
kamal | s/sees/seems/ | 19:41 |
kamal | jjohansen: natty kernel {i386, amd64} now building fine on tangerine again | 19:46 |
jjohansen | nice | 19:47 |
jjohansen | I've just sucked in the new tool chain locally and have fired off a test | 19:48 |
kamal | jjohansen: pretty massive breakage... I'm surprised it got into the archive at all in that state. anyway ... back to the old grind. ;-) | 19:48 |
jjohansen | yeah, well accidents happen, /me has had his fair share too | 19:49 |
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bryceh_ | apw, have you guys thought about backporting the support for ATI Cayman cards (http://www.phoronix.com/scan.php?page=news_item&px=OTE2NA) | 22:53 |
jjohansen | bryceh_: sigh, it will probably happen | 22:58 |
rishi | I am looking for the source for the linux-image-generic-lts-backport-maverick kernel. After reading https://help.ubuntu.com/community/Kernel/Compile and https://wiki.ubuntu.com/KernelTeam/KernelGitGuide I am unable to locate which Git tree to clone. | 22:59 |
rishi | I am trying diagnose a problem with the Mantis DVB driver and want to apply three patches from Linus' tree to test the issue. | 23:00 |
rishi | Any help regarding the location of the sources of linux-image-generic-lts-backport-maverick will be very helpful. Thanks. | 23:00 |
jjohansen | rishi: its in the lts-backport-maverick branch in the ubuntu-lucid repo | 23:14 |
rishi | jjohansen: Ok. Ok. | 23:19 |
rishi | I am just curious, what is the difference between http://kernel.ubuntu.com/~kernel-ppa/mainline/ and https://launchpad.net/~kernel-ppa/+archive/ppa ? Both seem to go by the name kernel-ppa, but have different content. | 23:20 |
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