July 2014 - kernelnewbies@kernelnewbies.org - Kernelnewbies Mailing Lists

Re: Kernelnewbies Digest, Vol 44, Issue 51
by Vishwas Srivastava July 28, 2014

July 28, 2014

Hi All, I have a doubt regarding the threaded interrupt handing mechanism. what is the kernel context of execution while executing interrupt thread. if i check for macro in_irq() or in_interrupt() withing handler thread , my understanding is that they both are going to return me 0 (since we are in kernel thread), as threads runs in process context. Also, since they are "kernel threads", they must be schedulable enteties. what conceptually deviated me from my understanding is one of the driver which had a threaded interrupt mechanism and when i checked in_interrupt() macro, it returned me a non zero value so i am a bit confused. thanks in advance. Vishwas S

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Re: doubt with git and linux-next
by Lucas Tanure July 28, 2014

July 28, 2014

I had the same issue. I cloned a new one, and every time that I need to update I do those commands, and now I never got the issue again. -- Lucas Tanure +55 (19) 988176559 On Fri, Jul 25, 2014 at 11:14 AM, Sudip Mukherjee < sudipm.mukherjee(a)gmail.com> wrote: > On Fri, Jul 25, 2014 at 7:40 PM, Lucas Tanure <tanure(a)linux.com> wrote: > > Hi, > > > > Could you try: > > > > $ git remote update > > $ git reset --hard origin/master > > then git pull master is not at all a necessary step ?? > > I have mentioned in my mail that " then i used : git reset --hard > master , so now git status is showing > "include/linux/mvebu-v7-cpuidle.h" as an untracked file ... " > but i have not modified that file . > > > > > > > > Thanks > > > > -- > > Lucas Tanure > > +55 (19) 988176559 > > > > > > On Fri, Jul 25, 2014 at 11:06 AM, Sudip Mukherjee > > <sudipm.mukherjee(a)gmail.com> wrote: > >> > >> Hi, > >> I am having some doubt regarding git and how to sync my local copy > >> with linux-next. I have cloned it and the next day if I want to sync > >> my master with linux-next , i am using : > >> git remote update > >> git pull master > >> > >> Then it is giving some messages about some conflicts. For example If i > >> am trying to sync with todays tree (next-20140725) i got some > >> conflicts. So to merge the conflicts I used > >> git commit -a > >> but then git status is showing "Your branch is ahead of > >> 'master/master' by 271 commits" > >> then i used : git reset --hard master , so now git status is showing > >> "include/linux/mvebu-v7-cpuidle.h" as an untracked file ... > >> Can you anyone please tell me what is the actual and proper way to > >> sync with that days tree .. > >> > >> Thanks in advance > >> Sudip > >> > >> _______________________________________________ > >> Kernelnewbies mailing list > >> Kernelnewbies(a)kernelnewbies.org > >> http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies > > > > >

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New Kernel-newbies site
by Lucas Tanure July 26, 2014

July 26, 2014

Hi, I was thinking if the Kernel-newbies could be re-born. Like a wiki that any registered user can edit and add new information. I saw here, in this list, a few questions more than once. And maybe some information still are hard to find. So, older newbies add information for new newbies. And the most relevant questions made here, go to the wiki. Thanks -- Lucas Tanure +55 (19) 988176559

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Re: New Kernel-newbies site
by Lucas Tanure July 25, 2014

July 25, 2014

Yes, like how submit a patch, clean up drivers, work with linux-next , etc .... This is a newbie website. -- Lucas Tanure +55 (19) 988176559 On Fri, Jul 25, 2014 at 6:26 PM, Andrey Utkin <andrey.krieger.utkin(a)gmail.com> wrote: > 2014-07-26 0:19 GMT+03:00 Lucas Tanure <tanure(a)linux.com>: >> Hi, >> >> I was thinking if the Kernel-newbies could be re-born. Like a wiki that any >> registered user can edit and add new information. >> I saw here, in this list, a few questions more than once. And maybe some >> information still are hard to find. >> So, older newbies add information for new newbies. And the most relevant >> questions made here, go to the wiki. > > The problem with current newbies site is outdated information. If > somebody will update the site with actual information, it will get > outdated some time after that (because active maintenance of such site > isn't fun i suppose). To avoid such Sisyphian task, I'd remove from > that site everything which is outdated, or can get outdated, and leave > only fundamental information. > > -- > Andrey Utkin

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doubt with git and linux-next
by Sudip Mukherjee July 25, 2014

July 25, 2014

Hi, I am having some doubt regarding git and how to sync my local copy with linux-next. I have cloned it and the next day if I want to sync my master with linux-next , i am using : git remote update git pull master Then it is giving some messages about some conflicts. For example If i am trying to sync with todays tree (next-20140725) i got some conflicts. So to merge the conflicts I used git commit -a but then git status is showing "Your branch is ahead of 'master/master' by 271 commits" then i used : git reset --hard master , so now git status is showing "include/linux/mvebu-v7-cpuidle.h" as an untracked file ... Can you anyone please tell me what is the actual and proper way to sync with that days tree .. Thanks in advance Sudip

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Help with flame wars
by Nick Krause July 25, 2014

July 25, 2014

As a new kernel developer I seem to have sent out some bad patches and the other developers are stating I should stop working on the kernel and learn C , even though I known it. I would like to see if we can stop these flame wars as there really wanting me to quit. Nick

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hacking kernel-3.x with ncc
by Real Name July 25, 2014

July 25, 2014

hi, is there anyone hacking/browsering kernel-3.x with ncc? If yes, could you please provide some suggestion how to do it? http://students.ceid.upatras.gr/~sxanth/ncc/ thanks

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How to force my usb mouse using a kernel module created by myself?
by Julio Faracco July 24, 2014

July 24, 2014

Hi everyone! It's a dumb question, but is not working with me. Does anybody knows how to force my usb mouse using a kernel module created by myself? When I plug my mouse it need to load my module and not the generic one. Thanks! *Julio Cesar Faracco*

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Task 1 of Eudyptula Challenge
by Nick Krause July 24, 2014

July 24, 2014

Hey guys, I am need so I was wondering how to write the Makefile. Cheers Nick

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printk or pr_<level>?
by Raphael Silva July 24, 2014

July 24, 2014

Hello guys, 1) If I use printk(KERN_<LEVEL>...) the checkpatch warns me: WARNING: Prefer [subsystem eg: netdev]_dbg([subsystem]dev, ... then dev_dbg(dev, ... then pr_debug(... to printk(KERN_DEBUG ... So, pr_devel() is the correct way to print a debug level msg? 2) if pr_<level> is the correct way, what about KERN_DEFAULT ? If I don't put the kern_level (printk("Hello");) WARNING: printk() should include KERN_ facility level if I put KERN_DEFAULT: WARNING: Prefer [subsystem eg: netdev]_default([subsystem]dev, ... then dev_default(dev, ... then pr_default(... to printk(KERN_DEFAULT ... But for KERN_DEFAULT, there isn't a macro pr_<level> like pr_devel(). Can anyone show me the correct way? tks

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