Christoph Lameter wrote:
> + if (current == next_thread(current)) {
> + /*
> + * Single thread case. We do not need to scan the tasklist
> + * and thus can avoid the read_lock(&task_list_lock). We
> + * also do not need to take the siglock since we
> + * are the only thread in this process
> + */
> + utime = cputime_add(current->signal->utime, current->utime);
> + stime = cputime_add(current->signal->utime, current->stime);
> + cutime = current->signal->cutime;
> + cstime = current->signal->cstime;
> + } else
Maybe #ifdef CONFIG_SMP around this? On uniproc you're still saving the
sti/cli around reading the tsk->signal stuff but that's probably not
enough to warrant the code bloat.
Or maybe this is a small enough amount of code not to matter... just a
suggestion.
-Mitch
-
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]
