Re: [PATCH 1/3] Kprobes: Make kprobe modules more portable

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On Tue, Aug 08, 2006 at 06:28:28PM +0100, Paulo Marques wrote:
> Just one side note: kallsyms_lookup_name is _really_ inefficient. The 
> kallsyms structure is tailored so that kallsyms_lookup (the most 
> frequently used function) is really fast. Doing it the other way around 
> involves a O(N) search, uncompressing every symbol name as it goes :P
> 
> I don't think this is really a performance problem for users like 
> kprobes, but I just wanted people to keep in mind that there is a 
> penalty involved in calling kallsyms_lookup_name.

That's true.  One more reason to not expose this interface to the public.
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

[Index of Archives]     [Kernel Newbies]     [Netfilter]     [Bugtraq]     [Photo]     [Stuff]     [Gimp]     [Yosemite News]     [MIPS Linux]     [ARM Linux]     [Linux Security]     [Linux RAID]     [Video 4 Linux]     [Linux for the blind]     [Linux Resources]
  Powered by Linux