Re: [PATCH 1/1] threads_max: Simple lockout prevention patch

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

 



On 4/24/06, Al Boldi <[email protected]> wrote:
> > > Like so?
> > >         if (nr_threads >= max_threads)
> > >                 if (p->pid != su_pid)
> > >                         goto bad_fork_cleanup_count;
> >
> > It's better to combine the two if statements into one with &&.

On Mon, 2006-04-24 at 16:53 +0300, Al Boldi wrote:
> I thought of combining them too, but was afraid of some compile optimization 
> issues.  Remember, this code-path is executed for each and every fork in the 
> system, thus it's highly performance sensitive.

There shouldn't be any difference. What compiler optimizations are you
referring to? Did you study the generated object code?

				Pekka

-
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