Messages in this thread Patch in this message | | | Date | Thu, 23 Aug 2007 09:57:38 -0400 | From | Prarit Bhargava <> | Subject | [PATCH]: i386 Stop bogus nmi & softlockup warnings in show_mem |
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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>
diff --git a/arch/i386/mm/pgtable.c b/arch/i386/mm/pgtable.c index 01437c4..9754cb5 100644 --- a/arch/i386/mm/pgtable.c +++ b/arch/i386/mm/pgtable.c @@ -6,6 +6,7 @@ #include <linux/kernel.h> #include <linux/errno.h> #include <linux/mm.h> +#include <linux/nmi.h> #include <linux/swap.h> #include <linux/smp.h> #include <linux/highmem.h> @@ -39,6 +40,8 @@ void show_mem(void) for_each_online_pgdat(pgdat) { pgdat_resize_lock(pgdat, &flags); for (i = 0; i < pgdat->node_spanned_pages; ++i) { + if (unlikely(i % MAX_ORDER_NR_PAGES == 0)) + touch_nmi_watchdog(); page = pgdat_page_nr(pgdat, i); total++; if (PageHighMem(page)) - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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