lk/linux-kernel-test
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

page-allocator: add inactive ratio calculation function of each zone

Browse Source 
Factor the per-zone arithemetic inside setup_per_zone_inactive_ratio()'s
loop into a a separate function, calculate_zone_inactive_ratio().  This
function will be used in a later patch

[akpm@linux-foundation.org: coding-style fixes]
Signed-off-by: Minchan Kim <minchan.kim@gmail.com>
Reviewed-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Cc: Rik van Riel <riel@redhat.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Minchan Kim
2009-06-16 15:32:49 -07:00
committed by Linus Torvalds
parent bc75d33f0f
commit 96cb4df5dd
2 changed files with 17 additions and 12 deletions
Download Patch File Download Diff File Expand all files Collapse all files

28
mm/page_alloc.c
View File

@ -4478,22 +4478,26 @@ void setup_per_zone_wmarks(void)
* 1TB 101 10GB
* 10TB 320 32GB
*/
void calculate_zone_inactive_ratio(struct zone *zone)
{
unsigned int gb, ratio;
/* Zone size in gigabytes */
gb = zone->present_pages >> (30 - PAGE_SHIFT);
if (gb)
ratio = int_sqrt(10 * gb);
else
ratio = 1;
zone->inactive_ratio = ratio;
}
static void __init setup_per_zone_inactive_ratio(void)
{
struct zone *zone;
for_each_zone(zone) {
unsigned int gb, ratio;
/* Zone size in gigabytes */
gb = zone->present_pages >> (30 - PAGE_SHIFT);
if (gb)
ratio = int_sqrt(10 * gb);
else
ratio = 1;
zone->inactive_ratio = ratio;
}
for_each_zone(zone)
calculate_zone_inactive_ratio(zone);
}
/*