diff options
| author | Christoph Lameter <christoph@scalex86.org> | 2005-09-06 15:16:33 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2005-09-07 16:57:18 -0700 |
| commit | c3d8c1414573be8cf7c8fdc1e076935697c7f6af (patch) | |
| tree | bd2fc21473e03fbbf5c1182ee584b68ebfd8b1cf | |
| parent | b3dbb4ecd46767b621df3dedd28788da93ee0cac (diff) | |
| download | op-kernel-dev-c3d8c1414573be8cf7c8fdc1e076935697c7f6af.zip op-kernel-dev-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>
| -rw-r--r-- | arch/i386/kernel/setup.c | 2 | ||||
| -rw-r--r-- | arch/i386/kernel/timers/timer_hpet.c | 2 | ||||
| -rw-r--r-- | mm/mmap.c | 2 | ||||
| -rw-r--r-- | mm/page_alloc.c | 8 |
4 files changed, 7 insertions, 7 deletions
diff --git a/arch/i386/kernel/setup.c b/arch/i386/kernel/setup.c index 294bcca..e29fd5a 100644 --- a/arch/i386/kernel/setup.c +++ b/arch/i386/kernel/setup.c @@ -82,7 +82,7 @@ EXPORT_SYMBOL(efi_enabled); /* cpu data as detected by the assembly code in head.S */ struct cpuinfo_x86 new_cpu_data __initdata = { 0, 0, 0, 0, -1, 1, 0, 0, -1 }; /* common cpu data for all cpus */ -struct cpuinfo_x86 boot_cpu_data = { 0, 0, 0, 0, -1, 1, 0, 0, -1 }; +struct cpuinfo_x86 boot_cpu_data __read_mostly = { 0, 0, 0, 0, -1, 1, 0, 0, -1 }; EXPORT_SYMBOL(boot_cpu_data); unsigned long mmu_cr4_features; diff --git a/arch/i386/kernel/timers/timer_hpet.c b/arch/i386/kernel/timers/timer_hpet.c index 001de97..6dbb29f 100644 --- a/arch/i386/kernel/timers/timer_hpet.c +++ b/arch/i386/kernel/timers/timer_hpet.c @@ -18,7 +18,7 @@ #include "mach_timer.h" #include <asm/hpet.h> -static unsigned long __read_mostly hpet_usec_quotient; /* convert hpet clks to usec */ +static unsigned long hpet_usec_quotient __read_mostly; /* convert hpet clks to usec */ static unsigned long tsc_hpet_quotient; /* convert tsc to hpet clks */ static unsigned long hpet_last; /* hpet counter value at last tick*/ static unsigned long last_tsc_low; /* lsb 32 bits of Time Stamp Counter */ @@ -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 b06a963..34bba8f 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" }; |
