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Date: Fri, 27 May 2011 18:01:34 +0530
From: Ankita Garg <ankita@...ibm.com>
To: linux-arm-kernel@...ts.infradead.org, linux-mm@...ck.org,
linux-kernel@...r.kernel.org, linux-pm@...ts.linux-foundation.org
Cc: ankita@...ibm.com, svaidy@...ux.vnet.ibm.com,
thomas.abraham@...aro.org
Subject: [PATCH 06/10] mm: Verify zonelists
Verify that the zonelists were created appropriately. Below is the output in
the dmesg for the verification of creation of zonelists. 4 regions, each of
size 512MB were created on the Samsung Orion/Exynos board (board has 2G RAM).
The regions were created as follows:
created region 0 in nid 0 start pfn 262144 spanned pages 131072
created region 1 in nid 0 start pfn 393216 spanned pages 131072
created region 2 in nid 0 start pfn 524288 spanned pages 131072
created region 3 in nid 0 start pfn 655360 spanned pages 57344
mminit::zonelist general 0:Normal = 0:Normal 0:Normal 0:Normal 0:Normal
mminit::zonelist general 0:Normal = 0:Normal 0:Normal 0:Normal 0:Normal
mminit::zonelist general 0:Normal = 0:Normal 0:Normal 0:Normal 0:Normal
mminit::zonelist general 0:Normal = 0:Normal 0:Normal 0:Normal 0:Normal
Since now 4 zones are present inside a node, the above shows 4 zonelists
being created.
Signed-off-by: Ankita Garg <ankita@...ibm.com>
---
mm/mm_init.c | 51 +++++++++++++++++++++++++++------------------------
1 files changed, 27 insertions(+), 24 deletions(-)
diff --git a/mm/mm_init.c b/mm/mm_init.c
index 4e0e265..77468f8 100644
--- a/mm/mm_init.c
+++ b/mm/mm_init.c
@@ -21,44 +21,47 @@ int mminit_loglevel;
/* The zonelists are simply reported, validation is manual. */
void mminit_verify_zonelist(void)
{
- int nid;
+ int nid, p;
if (mminit_loglevel < MMINIT_VERIFY)
return;
for_each_online_node(nid) {
pg_data_t *pgdat = NODE_DATA(nid);
- struct zone *zone;
- struct zoneref *z;
- struct zonelist *zonelist;
- int i, listid, zoneid;
-
- BUG_ON(MAX_ZONELISTS > 2);
- for (i = 0; i < MAX_ZONELISTS * MAX_NR_ZONES; i++) {
-
- /* Identify the zone and nodelist */
- zoneid = i % MAX_NR_ZONES;
- listid = i / MAX_NR_ZONES;
- zonelist = &pgdat->node_zonelists[listid];
- zone = &pgdat->node_zones[zoneid];
- if (!populated_zone(zone))
- continue;
-
- /* Print information about the zonelist */
- printk(KERN_DEBUG "mminit::zonelist %s %d:%s = ",
- listid > 0 ? "thisnode" : "general", nid,
- zone->name);
-
- /* Iterate the zonelist */
- for_each_zone_zonelist(zone, z, zonelist, zoneid) {
+ for_each_mem_region_in_nid(p, nid) {
+ mem_region_t *mem_region = &(NODE_DATA(nid)->mem_regions[p]);
+ struct zone *zone;
+ struct zoneref *z;
+ struct zonelist *zonelist;
+ int i, listid, zoneid;
+
+ BUG_ON(MAX_ZONELISTS > 2);
+ for (i = 0; i < MAX_ZONELISTS * MAX_NR_ZONES; i++) {
+
+ /* Identify the zone and nodelist */
+ zoneid = i % MAX_NR_ZONES;
+ listid = i / MAX_NR_ZONES;
+ zonelist = &pgdat->node_zonelists[listid];
+ zone = &mem_region->zones[zoneid];
+ if (!populated_zone(zone))
+ continue;
+
+ /* Print information about the zonelist */
+ printk(KERN_DEBUG "mminit::zonelist %s %d:%s = ",
+ listid > 0 ? "thisnode" : "general", nid,
+ zone->name);
+
+ /* Iterate the zonelist */
+ for_each_zone_zonelist(zone, z, zonelist, zoneid) {
#ifdef CONFIG_NUMA
- printk(KERN_CONT "%d:%s ",
- zone->node, zone->name);
+ printk(KERN_CONT "%d:%s ",
+ zone->node, zone->name);
#else
- printk(KERN_CONT "0:%s ", zone->name);
+ printk(KERN_CONT "0:%s ", zone->name);
#endif /* CONFIG_NUMA */
+ }
+ printk(KERN_CONT "\n");
}
- printk(KERN_CONT "\n");
}
}
}
--
1.7.4
--
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