UPSTREAM: drm/rockchip: direct config connecter gate and out_mode

[firefly-linux-kernel-4.4.55.git] / mm / vmscan.c

diff --git a/mm/vmscan.c b/mm/vmscan.c
index 7f63a9381f71ebbb0c1f9bdda94a913c930280f0..0c56f6a812bcd9d375aa74cf4b59b7d2b6176e91 100644 (file)
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -46,6 +46,7 @@
 #include <linux/oom.h>
 #include <linux/prefetch.h>
 #include <linux/printk.h>
+#include <linux/debugfs.h>
 
 #include <asm/tlbflush.h>
 #include <asm/div64.h>
@@ -175,7 +176,7 @@ static bool sane_reclaim(struct scan_control *sc)
        if (!memcg)
                return true;
 #ifdef CONFIG_CGROUP_WRITEBACK
-       if (cgroup_on_dfl(memcg->css.cgroup))
+       if (cgroup_subsys_on_dfl(memory_cgrp_subsys))
                return true;
 #endif
        return false;
@@ -194,7 +195,7 @@ static bool sane_reclaim(struct scan_control *sc)
 
 static unsigned long zone_reclaimable_pages(struct zone *zone)
 {
-       int nr;
+       unsigned long nr;
 
        nr = zone_page_state(zone, NR_ACTIVE_FILE) +
             zone_page_state(zone, NR_INACTIVE_FILE);
@@ -220,6 +221,39 @@ static unsigned long get_lru_size(struct lruvec *lruvec, enum lru_list lru)
        return zone_page_state(lruvec_zone(lruvec), NR_LRU_BASE + lru);
 }
 
+struct dentry *debug_file;
+
+static int debug_shrinker_show(struct seq_file *s, void *unused)
+{
+       struct shrinker *shrinker;
+       struct shrink_control sc;
+
+       sc.gfp_mask = -1;
+       sc.nr_to_scan = 0;
+
+       down_read(&shrinker_rwsem);
+       list_for_each_entry(shrinker, &shrinker_list, list) {
+               int num_objs;
+
+               num_objs = shrinker->count_objects(shrinker, &sc);
+               seq_printf(s, "%pf %d\n", shrinker->scan_objects, num_objs);
+       }
+       up_read(&shrinker_rwsem);
+       return 0;
+}
+
+static int debug_shrinker_open(struct inode *inode, struct file *file)
+{
+        return single_open(file, debug_shrinker_show, inode->i_private);
+}
+
+static const struct file_operations debug_shrinker_fops = {
+        .open = debug_shrinker_open,
+        .read = seq_read,
+        .llseek = seq_lseek,
+        .release = single_release,
+};
+
 /*
  * Add a shrinker callback to be called from the vm.
  */
@@ -249,6 +283,15 @@ int register_shrinker(struct shrinker *shrinker)
 }
 EXPORT_SYMBOL(register_shrinker);
 
+static int __init add_shrinker_debug(void)
+{
+       debugfs_create_file("shrinker", 0644, NULL, NULL,
+                           &debug_shrinker_fops);
+       return 0;
+}
+
+late_initcall(add_shrinker_debug);
+
 /*
  * Remove one
  */
@@ -1476,7 +1519,7 @@ static int too_many_isolated(struct zone *zone, int file,
         * won't get blocked by normal direct-reclaimers, forming a circular
         * deadlock.
         */
-       if ((sc->gfp_mask & GFP_IOFS) == GFP_IOFS)
+       if ((sc->gfp_mask & (__GFP_IO | __GFP_FS)) == (__GFP_IO | __GFP_FS))
                inactive >>= 3;
 
        return isolated > inactive;
@@ -1859,17 +1902,14 @@ static void shrink_active_list(unsigned long nr_to_scan,
 }
 
 #ifdef CONFIG_SWAP
-static int inactive_anon_is_low_global(struct zone *zone)
+static bool inactive_anon_is_low_global(struct zone *zone)
 {
        unsigned long active, inactive;
 
        active = zone_page_state(zone, NR_ACTIVE_ANON);
        inactive = zone_page_state(zone, NR_INACTIVE_ANON);
 
-       if (inactive * zone->inactive_ratio < active)
-               return 1;
-
-       return 0;
+       return inactive * zone->inactive_ratio < active;
 }
 
 /**
@@ -1879,14 +1919,14 @@ static int inactive_anon_is_low_global(struct zone *zone)
  * Returns true if the zone does not have enough inactive anon pages,
  * meaning some active anon pages need to be deactivated.
  */
-static int inactive_anon_is_low(struct lruvec *lruvec)
+static bool inactive_anon_is_low(struct lruvec *lruvec)
 {
        /*
         * If we don't have swap space, anonymous page deactivation
         * is pointless.
         */
        if (!total_swap_pages)
-               return 0;
+               return false;
 
        if (!mem_cgroup_disabled())
                return mem_cgroup_inactive_anon_is_low(lruvec);
@@ -1894,9 +1934,9 @@ static int inactive_anon_is_low(struct lruvec *lruvec)
        return inactive_anon_is_low_global(lruvec_zone(lruvec));
 }
 #else
-static inline int inactive_anon_is_low(struct lruvec *lruvec)
+static inline bool inactive_anon_is_low(struct lruvec *lruvec)
 {
-       return 0;
+       return false;
 }
 #endif
 
@@ -1914,7 +1954,7 @@ static inline int inactive_anon_is_low(struct lruvec *lruvec)
  * This uses a different ratio than the anonymous pages, because
  * the page cache uses a use-once replacement algorithm.
  */
-static int inactive_file_is_low(struct lruvec *lruvec)
+static bool inactive_file_is_low(struct lruvec *lruvec)
 {
        unsigned long inactive;
        unsigned long active;
@@ -1925,7 +1965,7 @@ static int inactive_file_is_low(struct lruvec *lruvec)
        return active > inactive;
 }
 
-static int inactive_list_is_low(struct lruvec *lruvec, enum lru_list lru)
+static bool inactive_list_is_low(struct lruvec *lruvec, enum lru_list lru)
 {
        if (is_file_lru(lru))
                return inactive_file_is_low(lruvec);
@@ -2480,7 +2520,7 @@ static inline bool compaction_ready(struct zone *zone, int order)
        balance_gap = min(low_wmark_pages(zone), DIV_ROUND_UP(
                        zone->managed_pages, KSWAPD_ZONE_BALANCE_GAP_RATIO));
        watermark = high_wmark_pages(zone) + balance_gap + (2UL << order);
-       watermark_ok = zone_watermark_ok_safe(zone, 0, watermark, 0, 0);
+       watermark_ok = zone_watermark_ok_safe(zone, 0, watermark, 0);
 
        /*
         * If compaction is deferred, reclaim up to a point where
@@ -2963,7 +3003,7 @@ static bool zone_balanced(struct zone *zone, int order,
                          unsigned long balance_gap, int classzone_idx)
 {
        if (!zone_watermark_ok_safe(zone, order, high_wmark_pages(zone) +
-                                   balance_gap, classzone_idx, 0))
+                                   balance_gap, classzone_idx))
                return false;
 
        if (IS_ENABLED(CONFIG_COMPACTION) && order && compaction_suitable(zone,
@@ -3696,10 +3736,10 @@ static inline unsigned long zone_unmapped_file_pages(struct zone *zone)
 }
 
 /* Work out how many page cache pages we can reclaim in this reclaim_mode */
-static long zone_pagecache_reclaimable(struct zone *zone)
+static unsigned long zone_pagecache_reclaimable(struct zone *zone)
 {
-       long nr_pagecache_reclaimable;
-       long delta = 0;
+       unsigned long nr_pagecache_reclaimable;
+       unsigned long delta = 0;
 
        /*
         * If RECLAIM_UNMAP is set, then all file pages are considered
@@ -3794,7 +3834,7 @@ int zone_reclaim(struct zone *zone, gfp_t gfp_mask, unsigned int order)
        /*
         * Do not scan if the allocation should not be delayed.
         */
-       if (!(gfp_mask & __GFP_WAIT) || (current->flags & PF_MEMALLOC))
+       if (!gfpflags_allow_blocking(gfp_mask) || (current->flags & PF_MEMALLOC))
                return ZONE_RECLAIM_NOSCAN;
 
        /*