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Date: Thu, 15 Apr 2010 16:38:28 -0700
From: Randy Dunlap <randy.dunlap@...cle.com>
To: linux-kernel@...r.kernel.org, linux-mm@...ck.org
Cc: akpm@...ux-foundation.org, Mel Gorman <mel@....ul.ie>
Subject: [PATCH -mmotm] vmstat: fix build errors when PROC_FS is disabled
From: Randy Dunlap <randy.dunlap@...cle.com>
Fix vmstat.c to build when CONFIG_PROC_FS is disabled
but CONFIG_DEBUG_FS is enabled.
Fixes around 25 errors.
Signed-off-by: Randy Dunlap <randy.dunlap@...cle.com>
Cc: Mel Gorman <mel@....ul.ie>
---
mm/vmstat.c | 119 ++++++++++++++++++++++++--------------------------
1 file changed, 59 insertions(+), 60 deletions(-)
--- mmotm-2010-0415-1442.orig/mm/vmstat.c
+++ mmotm-2010-0415-1442/mm/vmstat.c
@@ -16,6 +16,7 @@
#include <linux/cpu.h>
#include <linux/vmstat.h>
#include <linux/sched.h>
+#include <linux/seq_file.h>
#include <linux/math64.h>
#ifdef CONFIG_VM_EVENT_COUNTERS
@@ -380,18 +381,57 @@ void zone_statistics(struct zone *prefer
}
#endif
-#ifdef CONFIG_PROC_FS
-#include <linux/proc_fs.h>
-#include <linux/seq_file.h>
-
-static char * const migratetype_names[MIGRATE_TYPES] = {
- "Unmovable",
- "Reclaimable",
- "Movable",
- "Reserve",
- "Isolate",
+struct contig_page_info {
+ unsigned long free_pages;
+ unsigned long free_blocks_total;
+ unsigned long free_blocks_suitable;
};
+/* 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,
+ void (*print)(struct seq_file *m, pg_data_t *, struct zone *))
+{
+ struct zone *zone;
+ struct zone *node_zones = pgdat->node_zones;
+ unsigned long flags;
+
+ for (zone = node_zones; zone - node_zones < MAX_NR_ZONES; ++zone) {
+ if (!populated_zone(zone))
+ continue;
+
+ spin_lock_irqsave(&zone->lock, flags);
+ print(m, pgdat, zone);
+ spin_unlock_irqrestore(&zone->lock, flags);
+ }
+}
+
+/*
+ * A fragmentation index only makes sense if an allocation of a requested
+ * size would fail. If that is true, the fragmentation index indicates
+ * whether external fragmentation or a lack of memory was the problem.
+ * The value can be used to determine if page reclaim or compaction
+ * should be used
+ */
+int __fragmentation_index(unsigned int order, struct contig_page_info *info)
+{
+ unsigned long requested = 1UL << order;
+
+ if (!info->free_blocks_total)
+ return 0;
+
+ /* Fragmentation index only makes sense when a request would fail */
+ if (info->free_blocks_suitable)
+ return -1000;
+
+ /*
+ * Index is between 0 and 1 so return within 3 decimal places
+ *
+ * 0 => allocation would fail due to lack of memory
+ * 1 => allocation would fail due to fragmentation
+ */
+ return 1000 - div_u64( (1000+(div_u64(info->free_pages * 1000ULL, requested))), info->free_blocks_total);
+}
+
static void *frag_start(struct seq_file *m, loff_t *pos)
{
pg_data_t *pgdat;
@@ -416,23 +456,16 @@ static void frag_stop(struct seq_file *m
{
}
-/* 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,
- void (*print)(struct seq_file *m, pg_data_t *, struct zone *))
-{
- struct zone *zone;
- struct zone *node_zones = pgdat->node_zones;
- unsigned long flags;
-
- for (zone = node_zones; zone - node_zones < MAX_NR_ZONES; ++zone) {
- if (!populated_zone(zone))
- continue;
+#ifdef CONFIG_PROC_FS
+#include <linux/proc_fs.h>
- spin_lock_irqsave(&zone->lock, flags);
- print(m, pgdat, zone);
- spin_unlock_irqrestore(&zone->lock, flags);
- }
-}
+static char * const migratetype_names[MIGRATE_TYPES] = {
+ "Unmovable",
+ "Reclaimable",
+ "Movable",
+ "Reserve",
+ "Isolate",
+};
static void frag_show_print(struct seq_file *m, pg_data_t *pgdat,
struct zone *zone)
@@ -455,39 +488,6 @@ static int frag_show(struct seq_file *m,
return 0;
}
-struct contig_page_info {
- unsigned long free_pages;
- unsigned long free_blocks_total;
- unsigned long free_blocks_suitable;
-};
-
-/*
- * A fragmentation index only makes sense if an allocation of a requested
- * size would fail. If that is true, the fragmentation index indicates
- * whether external fragmentation or a lack of memory was the problem.
- * The value can be used to determine if page reclaim or compaction
- * should be used
- */
-int __fragmentation_index(unsigned int order, struct contig_page_info *info)
-{
- unsigned long requested = 1UL << order;
-
- if (!info->free_blocks_total)
- return 0;
-
- /* Fragmentation index only makes sense when a request would fail */
- if (info->free_blocks_suitable)
- return -1000;
-
- /*
- * Index is between 0 and 1 so return within 3 decimal places
- *
- * 0 => allocation would fail due to lack of memory
- * 1 => allocation would fail due to fragmentation
- */
- return 1000 - div_u64( (1000+(div_u64(info->free_pages * 1000ULL, requested))), info->free_blocks_total);
-}
-
static void pagetypeinfo_showfree_print(struct seq_file *m,
pg_data_t *pgdat, struct zone *zone)
{
@@ -1001,7 +1001,6 @@ module_init(setup_vmstat)
#ifdef CONFIG_DEBUG_FS
#include <linux/debugfs.h>
-#include <linux/seq_file.h>
static struct dentry *extfrag_debug_root;
--
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