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authorPrarit Bhargava <prarit@redhat.com>2007-08-22 14:34:38 -0400
committerTony Luck <tony.luck@intel.com>2007-09-01 02:50:21 -0700
commit99a19cf1c0eb22bad83fff060f08330ee9e029e2 (patch)
treea4e6726edfbcf9fcb89e9ebd8ebdcae53f26d48b /arch/ia64/mm/discontig.c
parent6e9de18120988388cdae5097c09e774416d58745 (diff)
downloadlinux-2.6.38-lt-ux500-99a19cf1c0eb22bad83fff060f08330ee9e029e2.tar.gz
[IA64] Stop bogus NMI & softlockup warnings in ia64 show_mem
When dumping memory via sysrq-m it is possible to take a bogus NMI watchdog or softlockup watchdog because the dump can take a long time on big memory systems. Occasionally tickle the watchdog when doing the dump. Signed-off-by: Prarit Bhargava <prarit@redhat.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
Diffstat (limited to 'arch/ia64/mm/discontig.c')
-rw-r--r--arch/ia64/mm/discontig.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/ia64/mm/discontig.c b/arch/ia64/mm/discontig.c
index 0dbf0e81f8c..0d34585058c 100644
--- a/arch/ia64/mm/discontig.c
+++ b/arch/ia64/mm/discontig.c
@@ -16,6 +16,7 @@
#include <linux/kernel.h>
#include <linux/mm.h>
+#include <linux/nmi.h>
#include <linux/swap.h>
#include <linux/bootmem.h>
#include <linux/acpi.h>
@@ -533,6 +534,8 @@ void show_mem(void)
present = pgdat->node_present_pages;
for(i = 0; i < pgdat->node_spanned_pages; i++) {
struct page *page;
+ if (unlikely(i % MAX_ORDER_NR_PAGES == 0))
+ touch_nmi_watchdog();
if (pfn_valid(pgdat->node_start_pfn + i))
page = pfn_to_page(pgdat->node_start_pfn + i);
else {