diff options
Diffstat (limited to 'mm/page_alloc.c')
| -rw-r--r-- | mm/page_alloc.c | 26 |
1 files changed, 25 insertions, 1 deletions
diff --git a/mm/page_alloc.c b/mm/page_alloc.c index 755c99a0ac71..d1a80f652c6f 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -223,6 +223,30 @@ static inline int bad_range(struct zone *zone, struct page *page) static void bad_page(struct page *page) { + static unsigned long resume; + static unsigned long nr_shown; + static unsigned long nr_unshown; + + /* + * Allow a burst of 60 reports, then keep quiet for that minute; + * or allow a steady drip of one report per second. + */ + if (nr_shown == 60) { + if (time_before(jiffies, resume)) { + nr_unshown++; + goto out; + } + if (nr_unshown) { + printk(KERN_EMERG + "Bad page state: %lu messages suppressed\n", + nr_unshown); + nr_unshown = 0; + } + nr_shown = 0; + } + if (nr_shown++ == 0) + resume = jiffies + 60 * HZ; + printk(KERN_EMERG "Bad page state in process %s pfn:%05lx\n", current->comm, page_to_pfn(page)); printk(KERN_EMERG @@ -232,7 +256,7 @@ static void bad_page(struct page *page) printk(KERN_EMERG "Trying to fix it up, but a reboot is needed\n"); dump_stack(); - +out: /* Leave bad fields for debug, except PageBuddy could make trouble */ __ClearPageBuddy(page); add_taint(TAINT_BAD_PAGE); |