From c3d8c1414573be8cf7c8fdc1e076935697c7f6af Mon Sep 17 00:00:00 2001 From: Christoph Lameter Date: Tue, 6 Sep 2005 15:16:33 -0700 Subject: [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 Signed-off-by: Christoph Lameter Signed-off-by: Shai Fultheim Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- mm/mmap.c | 2 +- mm/page_alloc.c | 8 ++++---- 2 files changed, 5 insertions(+), 5 deletions(-) (limited to 'mm') 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" }; -- cgit v1.2.3