Messages in this thread | | | From | Bernd Schubert <> | Subject | Re: API changes / 2.6.21 sysctl changes | Date | Mon, 11 Jun 2007 17:59:45 +0200 |
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On Monday 11 June 2007 17:46:27 Alexey Dobriyan wrote: > On Mon, Jun 11, 2007 at 03:13:12PM +0200, Bernd Schubert wrote: > > in 2.6.21 register_sysctl_table(), struct ctl_table and probably > > something else did change. Unfortunately so far I didn't figure out the > > "something else". > > Do you have a problem porting your sysctls to newer kernels?
A little bit, yes. Well, I got it working, but I don't understand why I had to do that whay.
I'm porting lustre to newer kernel versions and up to 2.6.20 the procfs/sysctl logic was
1.) register_sysctl_table() -> creates /proc/sys/lnet
2.) create_proc_entry() -> add additional files in /proc/sys/lnet
With 2.6.21 creating additional entries in /proc/sys/lnet fails and I have to first call "proc_mkdir("sys/lnet", NULL)". I did this proc_mkdir() call even before the register_sysctl_table() call, hoping that its correct.
My guess is that register_sysctl_table() doesn't create /proc/sys/lnet anymore, but I have now idea why. Either I did something wrong or its intended.
Since I don't like guessing I ask for more documentation. However I think in general, each interface change should be documented. Its just such a waste of time of many people, just because one person doesn't want to spend additional 5 min to write what did change.
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