This implements a platform-independent version of show_mem(). Signed-off-by: Johannes Weiner --- mm/Kconfig | 3 +++ mm/page_alloc.c | 55 +++++++++++++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 58 insertions(+) --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -45,6 +45,7 @@ #include #include #include +#include #include #include @@ -2042,6 +2043,60 @@ static void zoneref_set_zone(struct zone zoneref->zone_idx = zone_idx(zone); } +#ifdef CONFIG_HAVE_GENERIC_SHOW_MEM +void show_mem(void) +{ + pg_data_t *pgdat; + int total = 0, reserved = 0, shared = 0, nonshared = 0, highmem = 0; + + printk(KERN_INFO "Mem-Info:\n"); + show_free_areas(); + + for_each_online_pgdat(pgdat) { + unsigned long i, flags; + + pgdat_resize_lock(pgdat, &flags); + for (i = 0; i < pgdat->node_spanned_pages; i++) { + struct page *page; + unsigned long pfn = pgdat->node_start_pfn + i; + + if (unlikely((i % MAX_ORDER_NR_PAGES) == 0)) + touch_nmi_watchdog(); + + if (!pfn_valid(pfn)) + continue; + + page = pfn_to_page(pfn); + + if (PageHighMem(page)) + highmem++; + + if (PageReserved(page)) + reserved++; + else if (page_count(page) == 1) + nonshared++; + else if (page_count(page) > 1) + shared += page_count(page) - 1; + + total++; + } + pgdat_resize_unlock(pgdat, &flags); + } + + printk(KERN_INFO "%d pages RAM\n", total); +#ifdef CONFIG_HIGHMEM + printk(KERN_INFO "%d pages HighMem\n", highmem); +#endif + printk(KERN_INFO "%d pages reserved\n", reserved); + printk(KERN_INFO "%d pages shared\n", shared); + printk(KERN_INFO "%d pages non-shared\n", nonshared); +#ifdef CONFIG_QUICKLIST + printk(KERN_INFO "%d pages in pagetable cache\n", + quicklist_total_size()); +#endif +} +#endif /* CONFIG_HAVE_GENERIC_SHOW_MEM */ + /* * Builds allocation fallback zone lists. * --- a/mm/Kconfig +++ b/mm/Kconfig @@ -213,6 +213,9 @@ config VIRT_TO_BUS config PAGE_WALKER def_bool n +config HAVE_GENERIC_SHOW_MEM + def_bool n + config UNEVICTABLE_LRU bool "Add LRU list to track non-evictable pages" default y -- -- 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/