From: Lee Schermerhorn Report non-reclaimable pages per zone and system wide. Note: may want to track/report some specific reasons for nonreclaimability for deciding when to splice the noreclaim lists back to the normal lru. That will be tricky, especially in shrink_active_list(), where we'd need someplace to save the per page reason for non-reclaimability until the pages are dumped back onto the noreclaim list from the pagevec. Note: my tests indicate that NR_NORECLAIM and probably the other LRU stats aren't being maintained properly--especially with large amounts of mlocked memory and the mlock patch in this series installed. Can't be sure of this, as I don't know why the pages are on the noreclaim list. Needs further investigation. Signed-off-by: Lee Schermerhorn Signed-off-by: Rik van Riel --- V2 -> V3: + rebase to 23-mm1 atop RvR's split LRU series V1 -> V2: no changes drivers/base/node.c | 6 ++++++ fs/proc/proc_misc.c | 6 ++++++ mm/page_alloc.c | 16 +++++++++++++++- mm/vmstat.c | 3 +++ 4 files changed, 30 insertions(+), 1 deletion(-) Index: linux-2.6.26-rc2-mm1/mm/page_alloc.c =================================================================== --- linux-2.6.26-rc2-mm1.orig/mm/page_alloc.c 2008-05-16 14:05:09.000000000 -0400 +++ linux-2.6.26-rc2-mm1/mm/page_alloc.c 2008-05-16 14:05:13.000000000 -0400 @@ -1918,12 +1918,20 @@ void show_free_areas(void) } printk("Active_anon:%lu active_file:%lu inactive_anon%lu\n" - " inactive_file:%lu dirty:%lu writeback:%lu unstable:%lu\n" + " inactive_file:%lu" +//TODO: check/adjust line lengths +#ifdef CONFIG_NORECLAIM_LRU + " noreclaim:%lu" +#endif + " dirty:%lu writeback:%lu unstable:%lu\n" " free:%lu slab:%lu mapped:%lu pagetables:%lu bounce:%lu\n", global_page_state(NR_ACTIVE_ANON), global_page_state(NR_ACTIVE_FILE), global_page_state(NR_INACTIVE_ANON), global_page_state(NR_INACTIVE_FILE), +#ifdef CONFIG_NORECLAIM_LRU + global_page_state(NR_NORECLAIM), +#endif global_page_state(NR_FILE_DIRTY), global_page_state(NR_WRITEBACK), global_page_state(NR_UNSTABLE_NFS), @@ -1950,6 +1958,9 @@ void show_free_areas(void) " inactive_anon:%lukB" " active_file:%lukB" " inactive_file:%lukB" +#ifdef CONFIG_NORECLAIM_LRU + " noreclaim:%lukB" +#endif " present:%lukB" " pages_scanned:%lu" " all_unreclaimable? %s" @@ -1963,6 +1974,9 @@ void show_free_areas(void) K(zone_page_state(zone, NR_INACTIVE_ANON)), K(zone_page_state(zone, NR_ACTIVE_FILE)), K(zone_page_state(zone, NR_INACTIVE_FILE)), +#ifdef CONFIG_NORECLAIM_LRU + K(zone_page_state(zone, NR_NORECLAIM)), +#endif K(zone->present_pages), zone->pages_scanned, (zone_is_all_unreclaimable(zone) ? "yes" : "no") Index: linux-2.6.26-rc2-mm1/mm/vmstat.c =================================================================== --- linux-2.6.26-rc2-mm1.orig/mm/vmstat.c 2008-05-16 14:03:56.000000000 -0400 +++ linux-2.6.26-rc2-mm1/mm/vmstat.c 2008-05-16 14:05:13.000000000 -0400 @@ -699,6 +699,9 @@ static const char * const vmstat_text[] "nr_active_anon", "nr_inactive_file", "nr_active_file", +#ifdef CONFIG_NORECLAIM_LRU + "nr_noreclaim", +#endif "nr_anon_pages", "nr_mapped", "nr_file_pages", Index: linux-2.6.26-rc2-mm1/drivers/base/node.c =================================================================== --- linux-2.6.26-rc2-mm1.orig/drivers/base/node.c 2008-05-16 13:53:09.000000000 -0400 +++ linux-2.6.26-rc2-mm1/drivers/base/node.c 2008-05-16 14:05:13.000000000 -0400 @@ -67,6 +67,9 @@ static ssize_t node_read_meminfo(struct "Node %d Inactive(anon): %8lu kB\n" "Node %d Active(file): %8lu kB\n" "Node %d Inactive(file): %8lu kB\n" +#ifdef CONFIG_NORECLAIM_LRU + "Node %d Noreclaim: %8lu kB\n" +#endif #ifdef CONFIG_HIGHMEM "Node %d HighTotal: %8lu kB\n" "Node %d HighFree: %8lu kB\n" @@ -96,6 +99,9 @@ static ssize_t node_read_meminfo(struct nid, node_page_state(nid, NR_INACTIVE_ANON), nid, node_page_state(nid, NR_ACTIVE_FILE), nid, node_page_state(nid, NR_INACTIVE_FILE), +#ifdef CONFIG_NORECLAIM_LRU + nid, node_page_state(nid, NR_NORECLAIM), +#endif #ifdef CONFIG_HIGHMEM nid, K(i.totalhigh), nid, K(i.freehigh), Index: linux-2.6.26-rc2-mm1/fs/proc/proc_misc.c =================================================================== --- linux-2.6.26-rc2-mm1.orig/fs/proc/proc_misc.c 2008-05-16 13:53:09.000000000 -0400 +++ linux-2.6.26-rc2-mm1/fs/proc/proc_misc.c 2008-05-16 14:05:13.000000000 -0400 @@ -174,6 +174,9 @@ static int meminfo_read_proc(char *page, "Inactive(anon): %8lu kB\n" "Active(file): %8lu kB\n" "Inactive(file): %8lu kB\n" +#ifdef CONFIG_NORECLAIM_LRU + "Noreclaim: %8lu kB\n" +#endif #ifdef CONFIG_HIGHMEM "HighTotal: %8lu kB\n" "HighFree: %8lu kB\n" @@ -209,6 +212,9 @@ static int meminfo_read_proc(char *page, K(inactive_anon), K(active_file), K(inactive_file), +#ifdef CONFIG_NORECLAIM_LRU + K(global_page_state(NR_NORECLAIM)), +#endif #ifdef CONFIG_HIGHMEM K(i.totalhigh), K(i.freehigh), -- All Rights Reversed -- 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/