From 6c231b7bab0aa6860cd9da2de8a064eddc34c146 Mon Sep 17 00:00:00 2001 From: Ravikiran G Thirumalai Date: Tue, 6 Sep 2005 15:17:45 -0700 Subject: [PATCH] Additions to .data.read_mostly section Mark variables which are usually accessed for reads with __readmostly. Signed-off-by: Alok N Kataria Signed-off-by: Shai Fultheim Signed-off-by: Ravikiran Thirumalai Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- arch/i386/kernel/io_apic.c | 10 +++++----- arch/i386/kernel/timers/timer_hpet.c | 2 +- arch/i386/mm/discontig.c | 8 ++++---- arch/i386/mm/init.c | 2 +- 4 files changed, 11 insertions(+), 11 deletions(-) (limited to 'arch/i386') diff --git a/arch/i386/kernel/io_apic.c b/arch/i386/kernel/io_apic.c index 4a594043157..0e727e6da5c 100644 --- a/arch/i386/kernel/io_apic.c +++ b/arch/i386/kernel/io_apic.c @@ -78,7 +78,7 @@ static struct irq_pin_list { int apic, pin, next; } irq_2_pin[PIN_MAP_SIZE]; -int vector_irq[NR_VECTORS] = { [0 ... NR_VECTORS - 1] = -1}; +int vector_irq[NR_VECTORS] __read_mostly = { [0 ... NR_VECTORS - 1] = -1}; #ifdef CONFIG_PCI_MSI #define vector_to_irq(vector) \ (platform_legacy_irq(vector) ? vector : vector_irq[vector]) @@ -1119,7 +1119,7 @@ static inline int IO_APIC_irq_trigger(int irq) } /* irq_vectors is indexed by the sum of all RTEs in all I/O APICs. */ -u8 irq_vector[NR_IRQ_VECTORS] = { FIRST_DEVICE_VECTOR , 0 }; +u8 irq_vector[NR_IRQ_VECTORS] __read_mostly = { FIRST_DEVICE_VECTOR , 0 }; int assign_irq_vector(int irq) { @@ -1990,7 +1990,7 @@ static void set_ioapic_affinity_vector (unsigned int vector, * edge-triggered handler, without risking IRQ storms and other ugly * races. */ -static struct hw_interrupt_type ioapic_edge_type = { +static struct hw_interrupt_type ioapic_edge_type __read_mostly = { .typename = "IO-APIC-edge", .startup = startup_edge_ioapic, .shutdown = shutdown_edge_ioapic, @@ -2003,7 +2003,7 @@ static struct hw_interrupt_type ioapic_edge_type = { #endif }; -static struct hw_interrupt_type ioapic_level_type = { +static struct hw_interrupt_type ioapic_level_type __read_mostly = { .typename = "IO-APIC-level", .startup = startup_level_ioapic, .shutdown = shutdown_level_ioapic, @@ -2076,7 +2076,7 @@ static void ack_lapic_irq (unsigned int irq) static void end_lapic_irq (unsigned int i) { /* nothing */ } -static struct hw_interrupt_type lapic_irq_type = { +static struct hw_interrupt_type lapic_irq_type __read_mostly = { .typename = "local-APIC-edge", .startup = NULL, /* startup_irq() not used for IRQ0 */ .shutdown = NULL, /* shutdown_irq() not used for IRQ0 */ diff --git a/arch/i386/kernel/timers/timer_hpet.c b/arch/i386/kernel/timers/timer_hpet.c index 6dbb29f834e..d973a8b681f 100644 --- a/arch/i386/kernel/timers/timer_hpet.c +++ b/arch/i386/kernel/timers/timer_hpet.c @@ -19,7 +19,7 @@ #include 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 tsc_hpet_quotient __read_mostly; /* 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 */ static unsigned long last_tsc_high; /* msb 32 bits of Time Stamp Counter */ diff --git a/arch/i386/mm/discontig.c b/arch/i386/mm/discontig.c index 6711ce3f691..244d8ec66be 100644 --- a/arch/i386/mm/discontig.c +++ b/arch/i386/mm/discontig.c @@ -37,7 +37,7 @@ #include #include -struct pglist_data *node_data[MAX_NUMNODES]; +struct pglist_data *node_data[MAX_NUMNODES] __read_mostly; EXPORT_SYMBOL(node_data); bootmem_data_t node0_bdata; @@ -49,8 +49,8 @@ bootmem_data_t node0_bdata; * 2) node_start_pfn - the starting page frame number for a node * 3) node_end_pfn - the ending page fram number for a node */ -unsigned long node_start_pfn[MAX_NUMNODES]; -unsigned long node_end_pfn[MAX_NUMNODES]; +unsigned long node_start_pfn[MAX_NUMNODES] __read_mostly; +unsigned long node_end_pfn[MAX_NUMNODES] __read_mostly; #ifdef CONFIG_DISCONTIGMEM @@ -66,7 +66,7 @@ unsigned long node_end_pfn[MAX_NUMNODES]; * physnode_map[4-7] = 1; * physnode_map[8- ] = -1; */ -s8 physnode_map[MAX_ELEMENTS] = { [0 ... (MAX_ELEMENTS - 1)] = -1}; +s8 physnode_map[MAX_ELEMENTS] __read_mostly = { [0 ... (MAX_ELEMENTS - 1)] = -1}; EXPORT_SYMBOL(physnode_map); void memory_present(int nid, unsigned long start, unsigned long end) diff --git a/arch/i386/mm/init.c b/arch/i386/mm/init.c index 9edfc058b89..2ebaf75f732 100644 --- a/arch/i386/mm/init.c +++ b/arch/i386/mm/init.c @@ -393,7 +393,7 @@ void zap_low_mappings (void) } static int disable_nx __initdata = 0; -u64 __supported_pte_mask = ~_PAGE_NX; +u64 __supported_pte_mask __read_mostly = ~_PAGE_NX; /* * noexec = on|off -- cgit v1.2.3