Merge "mm: avoid taking zone lock in pagetypeinfo_showmixed()" (1014096c) · Commits · e / devices / android_kernel_sony_msm8998

mm/vmstat.c

+17 −10

Original line number	Diff line number	Diff line
		@@ -906,6 +906,7 @@ static void frag_stop(struct seq_file m, void arg)

		/* Walk all the zones in a node and print using a callback */
		static void walk_zones_in_node(struct seq_file m, pg_data_t pgdat,
		bool nolock,
		void (print)(struct seq_file m, pg_data_t , struct zone ))
		{
		struct zone *zone;
		@@ -916,8 +917,10 @@ static void walk_zones_in_node(struct seq_file m, pg_data_t pgdat,
		if (!populated_zone(zone))
		continue;

		if (!nolock)
		spin_lock_irqsave(&zone->lock, flags);
		print(m, pgdat, zone);
		if (!nolock)
		spin_unlock_irqrestore(&zone->lock, flags);
		}
		}
		@@ -954,7 +957,7 @@ static void frag_show_print(struct seq_file m, pg_data_t pgdat,
		static int frag_show(struct seq_file m, void arg)
		{
		pg_data_t pgdat = (pg_data_t )arg;
		walk_zones_in_node(m, pgdat, frag_show_print);
		walk_zones_in_node(m, pgdat, false, frag_show_print);
		return 0;
		}

		@@ -995,7 +998,7 @@ static int pagetypeinfo_showfree(struct seq_file m, void arg)
		seq_printf(m, "%6d ", order);
		seq_putc(m, '\n');

		walk_zones_in_node(m, pgdat, pagetypeinfo_showfree_print);
		walk_zones_in_node(m, pgdat, false, pagetypeinfo_showfree_print);

		return 0;
		}
		@@ -1044,7 +1047,7 @@ static int pagetypeinfo_showblockcount(struct seq_file m, void arg)
		for (mtype = 0; mtype < MIGRATE_TYPES; mtype++)
		seq_printf(m, "%12s ", migratetype_names[mtype]);
		seq_putc(m, '\n');
		walk_zones_in_node(m, pgdat, pagetypeinfo_showblockcount_print);
		walk_zones_in_node(m, pgdat, false, pagetypeinfo_showblockcount_print);

		return 0;
		}
		@@ -1088,7 +1091,11 @@ static void pagetypeinfo_showmixedcount_print(struct seq_file *m,

		page = pfn_to_page(pfn);
		if (PageBuddy(page)) {
		pfn += (1UL << page_order(page)) - 1;
		unsigned long freepage_order;

		freepage_order = page_order_unsafe(page);
		if (freepage_order < MAX_ORDER)
		pfn += (1UL << freepage_order) - 1;
		continue;
		}

		@@ -1143,7 +1150,7 @@ static void pagetypeinfo_showmixedcount(struct seq_file m, pg_data_t pgdat)
		seq_printf(m, "%12s ", migratetype_names[mtype]);
		seq_putc(m, '\n');

		walk_zones_in_node(m, pgdat, pagetypeinfo_showmixedcount_print);
		walk_zones_in_node(m, pgdat, true, pagetypeinfo_showmixedcount_print);
		#endif /* CONFIG_PAGE_OWNER */
		}

		@@ -1276,7 +1283,7 @@ static void zoneinfo_show_print(struct seq_file m, pg_data_t pgdat,
		static int zoneinfo_show(struct seq_file m, void arg)
		{
		pg_data_t pgdat = (pg_data_t )arg;
		walk_zones_in_node(m, pgdat, zoneinfo_show_print);
		walk_zones_in_node(m, pgdat, false, zoneinfo_show_print);
		return 0;
		}

		@@ -1635,7 +1642,7 @@ static int unusable_show(struct seq_file m, void arg)
		if (!node_state(pgdat->node_id, N_MEMORY))
		return 0;

		walk_zones_in_node(m, pgdat, unusable_show_print);
		walk_zones_in_node(m, pgdat, false, unusable_show_print);

		return 0;
		}
		@@ -1687,7 +1694,7 @@ static int extfrag_show(struct seq_file m, void arg)
		{
		pg_data_t pgdat = (pg_data_t )arg;

		walk_zones_in_node(m, pgdat, extfrag_show_print);
		walk_zones_in_node(m, pgdat, false, extfrag_show_print);

		return 0;
		}