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authorChristoph Lameter <christoph@scalex86.org>2005-09-06 15:16:33 -0700
committerLinus Torvalds <torvalds@g5.osdl.org>2005-09-07 16:57:18 -0700
commitc3d8c1414573be8cf7c8fdc1e076935697c7f6af (patch)
treebd2fc21473e03fbbf5c1182ee584b68ebfd8b1cf /mm
parentb3dbb4ecd46767b621df3dedd28788da93ee0cac (diff)
downloadlinux-sh-c3d8c1414573be8cf7c8fdc1e076935697c7f6af.tar.gz
[PATCH] More __read_mostly variables
Move some more frequently read variables that showed up during some of our performance tests as sometimes ending up in hot cachelines to the read_mostly section. Fix: Move the __read_mostly from before hpet_usec_quotient to follow the variable like the other uses of __read_mostly. Signed-off-by: Alok N Kataria <alokk@calsoftinc.com> Signed-off-by: Christoph Lameter <christoph@scalex86.org> Signed-off-by: Shai Fultheim <shai@scalex86.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'mm')
-rw-r--r--mm/mmap.c2
-rw-r--r--mm/page_alloc.c8
2 files changed, 5 insertions, 5 deletions
diff --git a/mm/mmap.c b/mm/mmap.c
index 404319477e71..bb43340d3973 100644
--- a/mm/mmap.c
+++ b/mm/mmap.c
@@ -61,7 +61,7 @@ pgprot_t protection_map[16] = {
int sysctl_overcommit_memory = OVERCOMMIT_GUESS; /* heuristic overcommit */
int sysctl_overcommit_ratio = 50; /* default is 50% */
-int sysctl_max_map_count = DEFAULT_MAX_MAP_COUNT;
+int sysctl_max_map_count __read_mostly = DEFAULT_MAX_MAP_COUNT;
atomic_t vm_committed_space = ATOMIC_INIT(0);
/*
diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index b06a9636d971..34bba8f1144e 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -42,11 +42,11 @@
* MCD - HACK: Find somewhere to initialize this EARLY, or make this
* initializer cleaner
*/
-nodemask_t node_online_map = { { [0] = 1UL } };
+nodemask_t node_online_map __read_mostly = { { [0] = 1UL } };
EXPORT_SYMBOL(node_online_map);
-nodemask_t node_possible_map = NODE_MASK_ALL;
+nodemask_t node_possible_map __read_mostly = NODE_MASK_ALL;
EXPORT_SYMBOL(node_possible_map);
-struct pglist_data *pgdat_list;
+struct pglist_data *pgdat_list __read_mostly;
unsigned long totalram_pages;
unsigned long totalhigh_pages;
long nr_swap_pages;
@@ -68,7 +68,7 @@ EXPORT_SYMBOL(nr_swap_pages);
* Used by page_zone() to look up the address of the struct zone whose
* id is encoded in the upper bits of page->flags
*/
-struct zone *zone_table[1 << ZONETABLE_SHIFT];
+struct zone *zone_table[1 << ZONETABLE_SHIFT] __read_mostly;
EXPORT_SYMBOL(zone_table);
static char *zone_names[MAX_NR_ZONES] = { "DMA", "Normal", "HighMem" };