[PATCH] reduce MAX_NR_ZONES: make display of highmem counters conditi…

…onal on CONFIG_HIGHMEM

Do not display HIGHMEM memory sizes if CONFIG_HIGHMEM is not set.

Make HIGHMEM dependent texts and make display of highmem counters optional

Some texts are depending on CONFIG_HIGHMEM.

Remove those strings and remove the display of highmem counter values if
CONFIG_HIGHMEM is not set.

[[email protected]: remove some ifdefs]
Signed-off-by: Christoph Lameter <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>

drivers/base/node.c

@@ -54,10 +54,12 @@ static ssize_t node_read_meminfo(struct sys_device * dev, char * buf)
 		       "Node %d MemUsed:      %8lu kB\n"
 		       "Node %d Active:       %8lu kB\n"
 		       "Node %d Inactive:     %8lu kB\n"
+#ifdef CONFIG_HIGHMEM
 		       "Node %d HighTotal:    %8lu kB\n"
 		       "Node %d HighFree:     %8lu kB\n"
 		       "Node %d LowTotal:     %8lu kB\n"
 		       "Node %d LowFree:      %8lu kB\n"
+#endif
 		       "Node %d Dirty:        %8lu kB\n"
 		       "Node %d Writeback:    %8lu kB\n"
 		       "Node %d FilePages:    %8lu kB\n"
@@ -72,10 +74,12 @@ static ssize_t node_read_meminfo(struct sys_device * dev, char * buf)
 		       nid, K(i.totalram - i.freeram),
 		       nid, K(active),
 		       nid, K(inactive),
+#ifdef CONFIG_HIGHMEM
 		       nid, K(i.totalhigh),
 		       nid, K(i.freehigh),
 		       nid, K(i.totalram - i.totalhigh),
 		       nid, K(i.freeram - i.freehigh),
+#endif
 		       nid, K(node_page_state(nid, NR_FILE_DIRTY)),
 		       nid, K(node_page_state(nid, NR_WRITEBACK)),
 		       nid, K(node_page_state(nid, NR_FILE_PAGES)),

fs/proc/proc_misc.c

@@ -157,10 +157,12 @@ static int meminfo_read_proc(char *page, char **start, off_t off,
 		"SwapCached:   %8lu kB\n"
 		"Active:       %8lu kB\n"
 		"Inactive:     %8lu kB\n"
+#ifdef CONFIG_HIGHMEM
 		"HighTotal:    %8lu kB\n"
 		"HighFree:     %8lu kB\n"
 		"LowTotal:     %8lu kB\n"
 		"LowFree:      %8lu kB\n"
+#endif
 		"SwapTotal:    %8lu kB\n"
 		"SwapFree:     %8lu kB\n"
 		"Dirty:        %8lu kB\n"
@@ -183,10 +185,12 @@ static int meminfo_read_proc(char *page, char **start, off_t off,
 		K(total_swapcache_pages),
 		K(active),
 		K(inactive),
+#ifdef CONFIG_HIGHMEM
 		K(i.totalhigh),
 		K(i.freehigh),
 		K(i.totalram-i.totalhigh),
 		K(i.freeram-i.freehigh),
+#endif
 		K(i.totalswap),
 		K(i.freeswap),
 		K(global_page_state(NR_FILE_DIRTY)),

mm/page_alloc.c

@@ -1281,10 +1281,6 @@ void show_free_areas(void)
 
 	get_zone_counts(&active, &inactive, &free);
 
-	printk("Free pages: %11ukB (%ukB HighMem)\n",
-		K(nr_free_pages()),
-		K(nr_free_highpages()));
-
 	printk("Active:%lu inactive:%lu dirty:%lu writeback:%lu "
 		"unstable:%lu free:%u slab:%lu mapped:%lu pagetables:%lu\n",
 		active,