Re: [PATCH] Periodically drain non local pagesets

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

 



On Wed, 2005-06-01 at 10:48 -0700, Christoph Lameter wrote:
> +               struct per_cpu_pageset *pset;
> +
> +               /* Do not drain local pagesets */
> +               if (zone == zone_table[numa_node_id()])
> +                       continue;
> +

It's best to avoid using NUMA-specific data structures, even in #ifdef
NUMA code.  This particular use is incorrect, as the zone_table[] is not
indexed by numa_node_id(), but rather by a combination of the node
number and the zone number (see NODEZONE()).

I'd suggest using something like this:

	if (zone->zone_pgdat->node_id == numa_node_id())

It might be nice to have a zone_node_id() macro that hides this as well.
With a macro like that that #defines to 0 when !CONFIG_NUMA, the #ifdef
around that function could probably go away.  

Also, are you sure that you need the local_irq_en/disable()?  

-- Dave

-
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