diff options
| author |   Prarit Bhargava <prarit@redhat.com> | 2007-08-22 14:34:38 -0400 |
|---|---|---|
| committer |   Tony Luck <tony.luck@intel.com> | 2007-09-01 02:50:21 -0700 |
| commit | 99a19cf1c0eb22bad83fff060f08330ee9e029e2 (patch) | |
| tree | a4e6726edfbcf9fcb89e9ebd8ebdcae53f26d48b /arch/ia64/mm/discontig.c | |
| parent | [IA64] SN: Add support for CPU disable (diff) | |
| download | linux-dev-99a19cf1c0eb22bad83fff060f08330ee9e029e2.tar.xz linux-dev-99a19cf1c0eb22bad83fff060f08330ee9e029e2.zip | |
[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.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/ia64/mm/discontig.c b/arch/ia64/mm/discontig.c index 0dbf0e81f8c0..0d34585058c8 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 { |