Re: [Outreachy kernel] commiting the .git/hooks/pre-commit and testing the changes on the updated e1000_main.c

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On Tue, Jul 26, 2016 at 08:40:47PM -0700, Alison Schofield wrote:
> On Tue, Jul 26, 2016 at 08:19:00PM -0700, courage angeh wrote:
> > 
> > 
> > On Tuesday, July 26, 2016 at 8:46:17 PM UTC+1, Alison Schofield wrote:
> > >
> > > Hi Courage ? ;) 
> > > I'll help you.  I'm an outreachy intern now. 
> > >
> > > We need to move this thread over to linux-newbie mailing list, since 
> > > this outreachy list won't be active until the next application round. 
> > > Please 'cc linux-newbie on posts as I've done above. 
> > >
> > > See comments in line below. 
> > > alisons 
> > >
> > >
> > > On Tue, Jul 26, 2016 at 11:06:10AM -0700, courage angeh wrote: 
> > > > I am a newbie... just start recently preparing for the out reach program 
> > > in 
> > > > December.... i started at: https://kernelnewbies.org/Outreachyfirstpatch 
> > > > but i have a number of difficulties: 
> > > > 1. After editx... ,  recompiling my driver, installing the changes and 
> > > > rebooting my linux system . I tested the changes but i didn't find the 
> > > > message " I can modify the Linux kernel!".... i contacted the irc 
> > > > channel:#kernel-outreachy but i seemed not to exist. 
> > >
> > > Let's go step by step. 
> > >
> > > Let's make sure you put in a printk that will get printed. 
> > > Let's make sure you've compiled the module. 
> > >
> > > Confirm you compiled the module...do you see a .ko with new timestamp? 
> > >
> > > Can you sudo modprobe <drivername> ? 
> > > Or sudo insmod drivername.ko ? 
> > >
> > > (at this point you don't need to keep rebooting the kernel.  We will 
> > > modprobe add/remove your driver.) 
> 
> OOPS!!!  I just reaquainted myself with the first patch tutorial and
> realize that you are on the step that tells you to modify a driver
> that is running on your system. So - forget what I said about modprobe
> and insmod.  You'll do that in the next step.  (It wouldn't hurt your
> system, it just would fail with device busy.)
> 
> OK...see more below
> 
> 
> > >
> > > post what you have on the above items and I'll take a look. 
> > >
> > 
> > Thanks for the reply. 
> > I did run the command but no output. i got an idea but i don't know if its 
> > right
> > i actually edited but the diver file in a folder in my work directory  not 
> > the driver file in my OS 
> > kernel...:/home/courage/git/kernels/staging/drivers/net/ethernet/intel/e1000
> > 
> > 
> > while the r other instances of this driver in my computer:
> > /lib/modules/3.13.0-32-generic/kernel/drivers/net/ethernet/intel/e1000
> > /lib/modules/4.7.0-rc6+/kernel/drivers/net/ethernet/intel/e1000
> > /usr/src/linux-headers-3.13.0-32/drivers/net/ethernet/intel/e1000
> > /usr/src/linux-headers-3.13.0-24/drivers/net/ethernet/intel/e1000


note: my tree is called 'iio' while you've named yours 'staging' of
course.  And, yes, you need to be doing the changes and building in
your git staging tree.

> 
> here's what i'd do on my system, see if you can track similar.
> 
> Find which ethernet modules sys is using:
> $ lsmod | grep e1000
> e1000e                233472  0 
> ptp                    20480  1 e1000e
> 
> Go find it:
> 
> amsfield22@d830:~/git/kernels/iio/drivers/net/ethernet/intel$ ls
> e1000   e100.c  i40e    igb    ixgb   ixgbevf  Makefile
> e1000e  fm10k   i40evf  igbvf  ixgbe  Kconfig
> amsfield22@d830:~/git/kernels/iio/drivers/net/ethernet/intel$ cd e1000e
> amsfield22@d830:~/git/kernels/iio/drivers/net/ethernet/intel/e1000e$ ls
> 80003es2lan.c  defines.h  ich8lan.c  Makefile  nvm.c    phy.h
> 80003es2lan.h  e1000.h    ich8lan.h  manage.c  nvm.h    ptp.c
> 82571.c        ethtool.c  mac.c      manage.h  param.c  regs.h
> 82571.h        hw.h       mac.h      netdev.c  phy.c
> amsfield22@d830:~/git/kernels/iio/drivers/net/ethernet/intel/e1000e$
> grep probe *.c
> netdev.c: * e1000_probe - Device Initialization Routine
> netdev.c: * e1000_probe initializes an adapter identified by a pci_dev
> structure.
> netdev.c:static int e1000_probe(struct pci_dev *pdev, const struct
> pci_device_id *ent)
> netdev.c:	.probe    = e1000_probe,
> amsfield22@d830:~/git/kernels/iio/drivers/net/ethernet/intel/e1000e$ 
> 
> I'd edit the probe function in netdev.c
> 
> Then follow tutorial instructions for rebuild/reboot.
> Look in dmesg for your printk message.
> 
> Let me know if you get further along...
> 
> alisons
> 
> 
> 
> 
> > 
> >  
> > 
> > >
> > > > 2. i went ahead to creating the .git/hooks/pre-commit but when i try 
> > > > staging and commiting the file i get the respective errors: 
> > > > 
> > > > error: Invalid path '.git/hooks/pre-commit' 
> > > > error: unable to add .git/hooks/pre-commit to index 
> > > > fatal: adding files failed 
> > > > 
> > > > and 
> > > > 
> > > > error: pathspec 'First patch' did not match any file(s) known to git. 
> > > > 
> > > > please some one help me out??? 
> > >
> > > You are not submitted that pre-commit hooks file.  It lives in your 
> > > git tree to poke you went you make a submittal. 
> > >
> > > > 
> > > > 
> > > > -- 
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> > > an email to outreachy-kern...@xxxxxxxxxxxxxxxx <javascript:>. 
> > > > To post to this group, send email to outreach...@xxxxxxxxxxxxxxxx 
> > > <javascript:>. 
> > > > To view this discussion on the web visit 
> > > https://groups.google.com/d/msgid/outreachy-kernel/64c3385b-6ee7-44ac-bb17-e265d5f9ade8%40googlegroups.com. 
> > >
> > > > For more options, visit https://groups.google.com/d/optout. 
> > >
> > >
> > 
> > -- 
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> 
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