leandrof/linux
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

PM / Hibernate: Touch Soft Lockup Watchdog in rtree_next_node

Browse Source 
When a memory bitmap is fully populated on a large memory
machine (several TB of RAM) it can take more than a minute
to walk through all bits. This causes the soft lockup
detector on these machine to report warnings.

Avoid this by touching the soft lockup watchdog in the
memory bitmap walking code.

Signed-off-by: Joerg Roedel <jroedel@suse.de>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Joerg Roedel 2014-07-21 12:27:02 +02:00 committed by Rafael J. Wysocki
parent 9047eb629e
commit 0f7d83e85d
1 changed files with 1 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
kernel/power/snapshot.c
View File

@ -769,6 +769,7 @@ static bool rtree_next_node(struct memory_bitmap *bm)
if (&bm->cur.node->list != &bm->cur.zone->leaves) {
bm->cur.node_pfn += BM_BITS_PER_BLOCK;
bm->cur.node_bit = 0;
touch_softlockup_watchdog();
return true;
}