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@xxxxxxxxxx> diff --git a/arch/ia64/mm/contig.c b/arch/ia64/mm/contig.c index 7ac8592..d3c538b 100644 --- a/arch/ia64/mm/contig.c +++ b/arch/ia64/mm/contig.c @@ -17,6 +17,7 @@ #include <linux/bootmem.h> #include <linux/efi.h> #include <linux/mm.h> +#include <linux/nmi.h> #include <linux/swap.h> #include <asm/meminit.h> @@ -56,6 +57,8 @@ 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 { diff --git a/arch/ia64/mm/discontig.c b/arch/ia64/mm/discontig.c index 0dbf0e8..0d34585 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 { - To unsubscribe from this list: send the line "unsubscribe linux-ia64" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
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