[PATCH 01/16] x86 smp: modify send_IPI_mask interface to accept cpumask_t pointers
From: Mike Travis
Date: Mon Dec 15 2008 - 21:28:53 EST
Impact: cleanup, change parameter passing
* Change genapic interfaces to accept cpumask_t pointers where possible.
* Modify external callers to use cpumask_t pointers in function calls.
* Create new send_IPI_mask_allbutself which is the same as the
send_IPI_mask functions but removes smp_processor_id() from list.
This removes another common need for a temporary cpumask_t variable.
* Functions that used a temp cpumask_t variable for:
cpumask_t allbutme = cpu_online_map;
cpu_clear(smp_processor_id(), allbutme);
if (!cpus_empty(allbutme))
...
become:
if (!cpus_equal(cpu_online_map, cpumask_of_cpu(cpu)))
...
* Other minor code optimizations (like using cpus_clear instead of
CPU_MASK_NONE, etc.)
Applies to linux-2.6.tip/master.
Signed-off-by: Mike Travis <travis@xxxxxxx>
Signed-off-by: Rusty Russell <rusty@xxxxxxxxxxxxxxx>
Acked-by: Ingo Molnar <mingo@xxxxxxx>
---
arch/x86/include/asm/bigsmp/apic.h | 14 +-
arch/x86/include/asm/bigsmp/ipi.h | 9 -
arch/x86/include/asm/es7000/apic.h | 38 +++----
arch/x86/include/asm/es7000/ipi.h | 9 -
arch/x86/include/asm/genapic_32.h | 9 -
arch/x86/include/asm/genapic_64.h | 11 +-
arch/x86/include/asm/ipi.h | 21 +++
arch/x86/include/asm/mach-default/mach_apic.h | 17 +--
arch/x86/include/asm/mach-default/mach_ipi.h | 18 +--
arch/x86/include/asm/numaq/apic.h | 6 -
arch/x86/include/asm/numaq/ipi.h | 9 -
arch/x86/include/asm/smp.h | 6 -
arch/x86/include/asm/summit/apic.h | 12 +-
arch/x86/include/asm/summit/ipi.h | 9 -
arch/x86/kernel/apic.c | 6 -
arch/x86/kernel/crash.c | 5
arch/x86/kernel/genapic_flat_64.c | 76 +++++++++-----
arch/x86/kernel/genx2apic_cluster.c | 60 +++++++----
arch/x86/kernel/genx2apic_phys.c | 55 +++++++---
arch/x86/kernel/genx2apic_uv_x.c | 43 ++++---
arch/x86/kernel/io_apic.c | 141 +++++++++++++-------------
arch/x86/kernel/ipi.c | 26 +++-
arch/x86/kernel/smp.c | 8 -
arch/x86/kernel/tlb_32.c | 2
arch/x86/kernel/tlb_64.c | 2
arch/x86/mach-generic/bigsmp.c | 5
arch/x86/mach-generic/es7000.c | 5
arch/x86/mach-generic/numaq.c | 5
arch/x86/mach-generic/summit.c | 5
arch/x86/xen/smp.c | 17 +--
30 files changed, 378 insertions(+), 271 deletions(-)
--- linux-2.6-for-ingo.orig/arch/x86/include/asm/bigsmp/apic.h
+++ linux-2.6-for-ingo/arch/x86/include/asm/bigsmp/apic.h
@@ -9,12 +9,12 @@ static inline int apic_id_registered(voi
return (1);
}
-static inline cpumask_t target_cpus(void)
+static inline const cpumask_t *target_cpus(void)
{
#ifdef CONFIG_SMP
- return cpu_online_map;
+ return &cpu_online_map;
#else
- return cpumask_of_cpu(0);
+ return &cpumask_of_cpu(0);
#endif
}
@@ -79,7 +79,7 @@ static inline int apicid_to_node(int log
static inline int cpu_present_to_apicid(int mps_cpu)
{
- if (mps_cpu < NR_CPUS)
+ if (mps_cpu < nr_cpu_ids)
return (int) per_cpu(x86_bios_cpu_apicid, mps_cpu);
return BAD_APICID;
@@ -94,7 +94,7 @@ extern u8 cpu_2_logical_apicid[];
/* Mapping from cpu number to logical apicid */
static inline int cpu_to_logical_apicid(int cpu)
{
- if (cpu >= NR_CPUS)
+ if (cpu >= nr_cpu_ids)
return BAD_APICID;
return cpu_physical_id(cpu);
}
@@ -119,12 +119,12 @@ static inline int check_phys_apicid_pres
}
/* As we are using single CPU as destination, pick only one CPU here */
-static inline unsigned int cpu_mask_to_apicid(cpumask_t cpumask)
+static inline unsigned int cpu_mask_to_apicid(const cpumask_t *cpumask)
{
int cpu;
int apicid;
- cpu = first_cpu(cpumask);
+ cpu = first_cpu(*cpumask);
apicid = cpu_to_logical_apicid(cpu);
return apicid;
}
--- linux-2.6-for-ingo.orig/arch/x86/include/asm/bigsmp/ipi.h
+++ linux-2.6-for-ingo/arch/x86/include/asm/bigsmp/ipi.h
@@ -1,9 +1,10 @@
#ifndef __ASM_MACH_IPI_H
#define __ASM_MACH_IPI_H
-void send_IPI_mask_sequence(cpumask_t mask, int vector);
+void send_IPI_mask_sequence(const cpumask_t *mask, int vector);
+void send_IPI_mask_allbutself(const cpumask_t *mask, int vector);
-static inline void send_IPI_mask(cpumask_t mask, int vector)
+static inline void send_IPI_mask(const cpumask_t *mask, int vector)
{
send_IPI_mask_sequence(mask, vector);
}
@@ -14,12 +15,12 @@ static inline void send_IPI_allbutself(i
cpu_clear(smp_processor_id(), mask);
if (!cpus_empty(mask))
- send_IPI_mask(mask, vector);
+ send_IPI_mask(&mask, vector);
}
static inline void send_IPI_all(int vector)
{
- send_IPI_mask(cpu_online_map, vector);
+ send_IPI_mask(&cpu_online_map, vector);
}
#endif /* __ASM_MACH_IPI_H */
--- linux-2.6-for-ingo.orig/arch/x86/include/asm/es7000/apic.h
+++ linux-2.6-for-ingo/arch/x86/include/asm/es7000/apic.h
@@ -9,14 +9,14 @@ static inline int apic_id_registered(voi
return (1);
}
-static inline cpumask_t target_cpus_cluster(void)
+static inline const cpumask_t *target_cpus_cluster(void)
{
- return CPU_MASK_ALL;
+ return &CPU_MASK_ALL;
}
-static inline cpumask_t target_cpus(void)
+static inline const cpumask_t *target_cpus(void)
{
- return cpumask_of_cpu(smp_processor_id());
+ return &cpumask_of_cpu(smp_processor_id());
}
#define APIC_DFR_VALUE_CLUSTER (APIC_DFR_CLUSTER)
@@ -80,9 +80,10 @@ extern int apic_version [MAX_APICS];
static inline void setup_apic_routing(void)
{
int apic = per_cpu(x86_bios_cpu_apicid, smp_processor_id());
- printk("Enabling APIC mode: %s. Using %d I/O APICs, target cpus %lx\n",
+ printk("Enabling APIC mode: %s. Using %d I/O APICs, target cpus %lx\n",
(apic_version[apic] == 0x14) ?
- "Physical Cluster" : "Logical Cluster", nr_ioapics, cpus_addr(target_cpus())[0]);
+ "Physical Cluster" : "Logical Cluster",
+ nr_ioapics, cpus_addr(*target_cpus())[0]);
}
static inline int multi_timer_check(int apic, int irq)
@@ -100,7 +101,7 @@ static inline int cpu_present_to_apicid(
{
if (!mps_cpu)
return boot_cpu_physical_apicid;
- else if (mps_cpu < NR_CPUS)
+ else if (mps_cpu < nr_cpu_ids)
return (int) per_cpu(x86_bios_cpu_apicid, mps_cpu);
else
return BAD_APICID;
@@ -120,9 +121,9 @@ extern u8 cpu_2_logical_apicid[];
static inline int cpu_to_logical_apicid(int cpu)
{
#ifdef CONFIG_SMP
- if (cpu >= NR_CPUS)
- return BAD_APICID;
- return (int)cpu_2_logical_apicid[cpu];
+ if (cpu >= nr_cpu_ids)
+ return BAD_APICID;
+ return (int)cpu_2_logical_apicid[cpu];
#else
return logical_smp_processor_id();
#endif
@@ -146,14 +147,15 @@ static inline int check_phys_apicid_pres
return (1);
}
-static inline unsigned int cpu_mask_to_apicid_cluster(cpumask_t cpumask)
+static inline unsigned int
+cpu_mask_to_apicid_cluster(const struct cpumask *cpumask)
{
int num_bits_set;
int cpus_found = 0;
int cpu;
int apicid;
- num_bits_set = cpus_weight(cpumask);
+ num_bits_set = cpumask_weight(cpumask);
/* Return id to all */
if (num_bits_set == NR_CPUS)
return 0xFF;
@@ -161,10 +163,10 @@ static inline unsigned int cpu_mask_to_a
* The cpus in the mask must all be on the apic cluster. If are not
* on the same apicid cluster return default value of TARGET_CPUS.
*/
- cpu = first_cpu(cpumask);
+ cpu = cpumask_first(cpumask);
apicid = cpu_to_logical_apicid(cpu);
while (cpus_found < num_bits_set) {
- if (cpu_isset(cpu, cpumask)) {
+ if (cpumask_test_cpu(cpu, cpumask)) {
int new_apicid = cpu_to_logical_apicid(cpu);
if (apicid_cluster(apicid) !=
apicid_cluster(new_apicid)){
@@ -179,14 +181,14 @@ static inline unsigned int cpu_mask_to_a
return apicid;
}
-static inline unsigned int cpu_mask_to_apicid(cpumask_t cpumask)
+static inline unsigned int cpu_mask_to_apicid(const cpumask_t *cpumask)
{
int num_bits_set;
int cpus_found = 0;
int cpu;
int apicid;
- num_bits_set = cpus_weight(cpumask);
+ num_bits_set = cpus_weight(*cpumask);
/* Return id to all */
if (num_bits_set == NR_CPUS)
return cpu_to_logical_apicid(0);
@@ -194,10 +196,10 @@ static inline unsigned int cpu_mask_to_a
* The cpus in the mask must all be on the apic cluster. If are not
* on the same apicid cluster return default value of TARGET_CPUS.
*/
- cpu = first_cpu(cpumask);
+ cpu = first_cpu(*cpumask);
apicid = cpu_to_logical_apicid(cpu);
while (cpus_found < num_bits_set) {
- if (cpu_isset(cpu, cpumask)) {
+ if (cpu_isset(cpu, *cpumask)) {
int new_apicid = cpu_to_logical_apicid(cpu);
if (apicid_cluster(apicid) !=
apicid_cluster(new_apicid)){
--- linux-2.6-for-ingo.orig/arch/x86/include/asm/es7000/ipi.h
+++ linux-2.6-for-ingo/arch/x86/include/asm/es7000/ipi.h
@@ -1,9 +1,10 @@
#ifndef __ASM_ES7000_IPI_H
#define __ASM_ES7000_IPI_H
-void send_IPI_mask_sequence(cpumask_t mask, int vector);
+void send_IPI_mask_sequence(const cpumask_t *mask, int vector);
+void send_IPI_mask_allbutself(const cpumask_t *mask, int vector);
-static inline void send_IPI_mask(cpumask_t mask, int vector)
+static inline void send_IPI_mask(const cpumask_t *mask, int vector)
{
send_IPI_mask_sequence(mask, vector);
}
@@ -13,12 +14,12 @@ static inline void send_IPI_allbutself(i
cpumask_t mask = cpu_online_map;
cpu_clear(smp_processor_id(), mask);
if (!cpus_empty(mask))
- send_IPI_mask(mask, vector);
+ send_IPI_mask(&mask, vector);
}
static inline void send_IPI_all(int vector)
{
- send_IPI_mask(cpu_online_map, vector);
+ send_IPI_mask(&cpu_online_map, vector);
}
#endif /* __ASM_ES7000_IPI_H */
--- linux-2.6-for-ingo.orig/arch/x86/include/asm/genapic_32.h
+++ linux-2.6-for-ingo/arch/x86/include/asm/genapic_32.h
@@ -24,7 +24,7 @@ struct genapic {
int (*probe)(void);
int (*apic_id_registered)(void);
- cpumask_t (*target_cpus)(void);
+ const cpumask_t *(*target_cpus)(void);
int int_delivery_mode;
int int_dest_mode;
int ESR_DISABLE;
@@ -57,12 +57,13 @@ struct genapic {
unsigned (*get_apic_id)(unsigned long x);
unsigned long apic_id_mask;
- unsigned int (*cpu_mask_to_apicid)(cpumask_t cpumask);
- cpumask_t (*vector_allocation_domain)(int cpu);
+ unsigned int (*cpu_mask_to_apicid)(const cpumask_t *cpumask);
+ void (*vector_allocation_domain)(int cpu, cpumask_t *retmask);
#ifdef CONFIG_SMP
/* ipi */
- void (*send_IPI_mask)(cpumask_t mask, int vector);
+ void (*send_IPI_mask)(const cpumask_t *mask, int vector);
+ void (*send_IPI_mask_allbutself)(const cpumask_t *mask, int vector);
void (*send_IPI_allbutself)(int vector);
void (*send_IPI_all)(int vector);
#endif
--- linux-2.6-for-ingo.orig/arch/x86/include/asm/genapic_64.h
+++ linux-2.6-for-ingo/arch/x86/include/asm/genapic_64.h
@@ -1,6 +1,8 @@
#ifndef _ASM_X86_GENAPIC_64_H
#define _ASM_X86_GENAPIC_64_H
+#include <linux/cpumask.h>
+
/*
* Copyright 2004 James Cleverdon, IBM.
* Subject to the GNU Public License, v.2
@@ -18,16 +20,17 @@ struct genapic {
u32 int_delivery_mode;
u32 int_dest_mode;
int (*apic_id_registered)(void);
- cpumask_t (*target_cpus)(void);
- cpumask_t (*vector_allocation_domain)(int cpu);
+ const cpumask_t *(*target_cpus)(void);
+ void (*vector_allocation_domain)(int cpu, cpumask_t *retmask);
void (*init_apic_ldr)(void);
/* ipi */
- void (*send_IPI_mask)(cpumask_t mask, int vector);
+ void (*send_IPI_mask)(const cpumask_t *mask, int vector);
+ void (*send_IPI_mask_allbutself)(const cpumask_t *mask, int vector);
void (*send_IPI_allbutself)(int vector);
void (*send_IPI_all)(int vector);
void (*send_IPI_self)(int vector);
/* */
- unsigned int (*cpu_mask_to_apicid)(cpumask_t cpumask);
+ unsigned int (*cpu_mask_to_apicid)(const cpumask_t *cpumask);
unsigned int (*phys_pkg_id)(int index_msb);
unsigned int (*get_apic_id)(unsigned long x);
unsigned long (*set_apic_id)(unsigned int id);
--- linux-2.6-for-ingo.orig/arch/x86/include/asm/ipi.h
+++ linux-2.6-for-ingo/arch/x86/include/asm/ipi.h
@@ -117,7 +117,7 @@ static inline void __send_IPI_dest_field
native_apic_mem_write(APIC_ICR, cfg);
}
-static inline void send_IPI_mask_sequence(cpumask_t mask, int vector)
+static inline void send_IPI_mask_sequence(const cpumask_t *mask, int vector)
{
unsigned long flags;
unsigned long query_cpu;
@@ -128,11 +128,28 @@ static inline void send_IPI_mask_sequenc
* - mbligh
*/
local_irq_save(flags);
- for_each_cpu_mask_nr(query_cpu, mask) {
+ for_each_cpu_mask_nr(query_cpu, *mask) {
__send_IPI_dest_field(per_cpu(x86_cpu_to_apicid, query_cpu),
vector, APIC_DEST_PHYSICAL);
}
local_irq_restore(flags);
}
+static inline void send_IPI_mask_allbutself(const cpumask_t *mask, int vector)
+{
+ unsigned long flags;
+ unsigned int query_cpu;
+ unsigned int this_cpu = smp_processor_id();
+
+ /* See Hack comment above */
+
+ local_irq_save(flags);
+ for_each_cpu_mask_nr(query_cpu, *mask)
+ if (query_cpu != this_cpu)
+ __send_IPI_dest_field(
+ per_cpu(x86_cpu_to_apicid, query_cpu),
+ vector, APIC_DEST_PHYSICAL);
+ local_irq_restore(flags);
+}
+
#endif /* _ASM_X86_IPI_H */
--- linux-2.6-for-ingo.orig/arch/x86/include/asm/mach-default/mach_apic.h
+++ linux-2.6-for-ingo/arch/x86/include/asm/mach-default/mach_apic.h
@@ -8,12 +8,12 @@
#define APIC_DFR_VALUE (APIC_DFR_FLAT)
-static inline cpumask_t target_cpus(void)
+static inline const cpumask_t *target_cpus(void)
{
#ifdef CONFIG_SMP
- return cpu_online_map;
+ return &cpu_online_map;
#else
- return cpumask_of_cpu(0);
+ return &cpumask_of_cpu(0);
#endif
}
@@ -61,9 +61,9 @@ static inline int apic_id_registered(voi
return physid_isset(read_apic_id(), phys_cpu_present_map);
}
-static inline unsigned int cpu_mask_to_apicid(cpumask_t cpumask)
+static inline unsigned int cpu_mask_to_apicid(const cpumask_t *cpumask)
{
- return cpus_addr(cpumask)[0];
+ return cpus_addr(*cpumask)[0];
}
static inline u32 phys_pkg_id(u32 cpuid_apic, int index_msb)
@@ -88,7 +88,7 @@ static inline int apicid_to_node(int log
#endif
}
-static inline cpumask_t vector_allocation_domain(int cpu)
+static inline void vector_allocation_domain(int cpu, cpumask_t *retmask)
{
/* Careful. Some cpus do not strictly honor the set of cpus
* specified in the interrupt destination when using lowest
@@ -98,8 +98,7 @@ static inline cpumask_t vector_allocatio
* deliver interrupts to the wrong hyperthread when only one
* hyperthread was specified in the interrupt desitination.
*/
- cpumask_t domain = { { [0] = APIC_ALL_CPUS, } };
- return domain;
+ *retmask = (cpumask_t) { { [0] = APIC_ALL_CPUS } };
}
#endif
@@ -131,7 +130,7 @@ static inline int cpu_to_logical_apicid(
static inline int cpu_present_to_apicid(int mps_cpu)
{
- if (mps_cpu < NR_CPUS && cpu_present(mps_cpu))
+ if (mps_cpu < nr_cpu_ids && cpu_present(mps_cpu))
return (int)per_cpu(x86_bios_cpu_apicid, mps_cpu);
else
return BAD_APICID;
--- linux-2.6-for-ingo.orig/arch/x86/include/asm/mach-default/mach_ipi.h
+++ linux-2.6-for-ingo/arch/x86/include/asm/mach-default/mach_ipi.h
@@ -4,7 +4,8 @@
/* Avoid include hell */
#define NMI_VECTOR 0x02
-void send_IPI_mask_bitmask(cpumask_t mask, int vector);
+void send_IPI_mask_bitmask(const cpumask_t *mask, int vector);
+void send_IPI_mask_allbutself(const cpumask_t *mask, int vector);
void __send_IPI_shortcut(unsigned int shortcut, int vector);
extern int no_broadcast;
@@ -12,28 +13,27 @@ extern int no_broadcast;
#ifdef CONFIG_X86_64
#include <asm/genapic.h>
#define send_IPI_mask (genapic->send_IPI_mask)
+#define send_IPI_mask_allbutself (genapic->send_IPI_mask_allbutself)
#else
-static inline void send_IPI_mask(cpumask_t mask, int vector)
+static inline void send_IPI_mask(const cpumask_t *mask, int vector)
{
send_IPI_mask_bitmask(mask, vector);
}
+void send_IPI_mask_allbutself(const cpumask_t *mask, int vector);
#endif
static inline void __local_send_IPI_allbutself(int vector)
{
- if (no_broadcast || vector == NMI_VECTOR) {
- cpumask_t mask = cpu_online_map;
-
- cpu_clear(smp_processor_id(), mask);
- send_IPI_mask(mask, vector);
- } else
+ if (no_broadcast || vector == NMI_VECTOR)
+ send_IPI_mask_allbutself(&cpu_online_map, vector);
+ else
__send_IPI_shortcut(APIC_DEST_ALLBUT, vector);
}
static inline void __local_send_IPI_all(int vector)
{
if (no_broadcast || vector == NMI_VECTOR)
- send_IPI_mask(cpu_online_map, vector);
+ send_IPI_mask(&cpu_online_map, vector);
else
__send_IPI_shortcut(APIC_DEST_ALLINC, vector);
}
--- linux-2.6-for-ingo.orig/arch/x86/include/asm/numaq/apic.h
+++ linux-2.6-for-ingo/arch/x86/include/asm/numaq/apic.h
@@ -7,9 +7,9 @@
#define APIC_DFR_VALUE (APIC_DFR_CLUSTER)
-static inline cpumask_t target_cpus(void)
+static inline const cpumask_t *target_cpus(void)
{
- return CPU_MASK_ALL;
+ return &CPU_MASK_ALL;
}
#define NO_BALANCE_IRQ (1)
@@ -122,7 +122,7 @@ static inline void enable_apic_mode(void
* We use physical apicids here, not logical, so just return the default
* physical broadcast to stop people from breaking us
*/
-static inline unsigned int cpu_mask_to_apicid(cpumask_t cpumask)
+static inline unsigned int cpu_mask_to_apicid(const cpumask_t *cpumask)
{
return (int) 0xF;
}
--- linux-2.6-for-ingo.orig/arch/x86/include/asm/numaq/ipi.h
+++ linux-2.6-for-ingo/arch/x86/include/asm/numaq/ipi.h
@@ -1,9 +1,10 @@
#ifndef __ASM_NUMAQ_IPI_H
#define __ASM_NUMAQ_IPI_H
-void send_IPI_mask_sequence(cpumask_t, int vector);
+void send_IPI_mask_sequence(const cpumask_t *mask, int vector);
+void send_IPI_mask_allbutself(const cpumask_t *mask, int vector);
-static inline void send_IPI_mask(cpumask_t mask, int vector)
+static inline void send_IPI_mask(const cpumask_t *mask, int vector)
{
send_IPI_mask_sequence(mask, vector);
}
@@ -14,12 +15,12 @@ static inline void send_IPI_allbutself(i
cpu_clear(smp_processor_id(), mask);
if (!cpus_empty(mask))
- send_IPI_mask(mask, vector);
+ send_IPI_mask(&mask, vector);
}
static inline void send_IPI_all(int vector)
{
- send_IPI_mask(cpu_online_map, vector);
+ send_IPI_mask(&cpu_online_map, vector);
}
#endif /* __ASM_NUMAQ_IPI_H */
--- linux-2.6-for-ingo.orig/arch/x86/include/asm/smp.h
+++ linux-2.6-for-ingo/arch/x86/include/asm/smp.h
@@ -60,7 +60,7 @@ struct smp_ops {
void (*cpu_die)(unsigned int cpu);
void (*play_dead)(void);
- void (*send_call_func_ipi)(cpumask_t mask);
+ void (*send_call_func_ipi)(const cpumask_t *mask);
void (*send_call_func_single_ipi)(int cpu);
};
@@ -125,7 +125,7 @@ static inline void arch_send_call_functi
static inline void arch_send_call_function_ipi(cpumask_t mask)
{
- smp_ops.send_call_func_ipi(mask);
+ smp_ops.send_call_func_ipi(&mask);
}
void cpu_disable_common(void);
@@ -138,7 +138,7 @@ void native_cpu_die(unsigned int cpu);
void native_play_dead(void);
void play_dead_common(void);
-void native_send_call_func_ipi(cpumask_t mask);
+void native_send_call_func_ipi(const cpumask_t *mask);
void native_send_call_func_single_ipi(int cpu);
extern void prefill_possible_map(void);
--- linux-2.6-for-ingo.orig/arch/x86/include/asm/summit/apic.h
+++ linux-2.6-for-ingo/arch/x86/include/asm/summit/apic.h
@@ -14,13 +14,13 @@
#define APIC_DFR_VALUE (APIC_DFR_CLUSTER)
-static inline cpumask_t target_cpus(void)
+static inline const cpumask_t *target_cpus(void)
{
/* CPU_MASK_ALL (0xff) has undefined behaviour with
* dest_LowestPrio mode logical clustered apic interrupt routing
* Just start on cpu 0. IRQ balancing will spread load
*/
- return cpumask_of_cpu(0);
+ return &cpumask_of_cpu(0);
}
#define INT_DELIVERY_MODE (dest_LowestPrio)
@@ -137,14 +137,14 @@ static inline void enable_apic_mode(void
{
}
-static inline unsigned int cpu_mask_to_apicid(cpumask_t cpumask)
+static inline unsigned int cpu_mask_to_apicid(const cpumask_t *cpumask)
{
int num_bits_set;
int cpus_found = 0;
int cpu;
int apicid;
- num_bits_set = cpus_weight(cpumask);
+ num_bits_set = cpus_weight(*cpumask);
/* Return id to all */
if (num_bits_set == NR_CPUS)
return (int) 0xFF;
@@ -152,10 +152,10 @@ static inline unsigned int cpu_mask_to_a
* The cpus in the mask must all be on the apic cluster. If are not
* on the same apicid cluster return default value of TARGET_CPUS.
*/
- cpu = first_cpu(cpumask);
+ cpu = first_cpu(*cpumask);
apicid = cpu_to_logical_apicid(cpu);
while (cpus_found < num_bits_set) {
- if (cpu_isset(cpu, cpumask)) {
+ if (cpu_isset(cpu, *cpumask)) {
int new_apicid = cpu_to_logical_apicid(cpu);
if (apicid_cluster(apicid) !=
apicid_cluster(new_apicid)){
--- linux-2.6-for-ingo.orig/arch/x86/include/asm/summit/ipi.h
+++ linux-2.6-for-ingo/arch/x86/include/asm/summit/ipi.h
@@ -1,9 +1,10 @@
#ifndef __ASM_SUMMIT_IPI_H
#define __ASM_SUMMIT_IPI_H
-void send_IPI_mask_sequence(cpumask_t mask, int vector);
+void send_IPI_mask_sequence(const cpumask_t *mask, int vector);
+void send_IPI_mask_allbutself(const cpumask_t *mask, int vector);
-static inline void send_IPI_mask(cpumask_t mask, int vector)
+static inline void send_IPI_mask(const cpumask_t *mask, int vector)
{
send_IPI_mask_sequence(mask, vector);
}
@@ -14,12 +15,12 @@ static inline void send_IPI_allbutself(i
cpu_clear(smp_processor_id(), mask);
if (!cpus_empty(mask))
- send_IPI_mask(mask, vector);
+ send_IPI_mask(&mask, vector);
}
static inline void send_IPI_all(int vector)
{
- send_IPI_mask(cpu_online_map, vector);
+ send_IPI_mask(&cpu_online_map, vector);
}
#endif /* __ASM_SUMMIT_IPI_H */
--- linux-2.6-for-ingo.orig/arch/x86/kernel/apic.c
+++ linux-2.6-for-ingo/arch/x86/kernel/apic.c
@@ -141,7 +141,7 @@ static int lapic_next_event(unsigned lon
struct clock_event_device *evt);
static void lapic_timer_setup(enum clock_event_mode mode,
struct clock_event_device *evt);
-static void lapic_timer_broadcast(const struct cpumask *mask);
+static void lapic_timer_broadcast(const cpumask_t *mask);
static void apic_pm_activate(void);
/*
@@ -453,10 +453,10 @@ static void lapic_timer_setup(enum clock
/*
* Local APIC timer broadcast function
*/
-static void lapic_timer_broadcast(const struct cpumask *mask)
+static void lapic_timer_broadcast(const cpumask_t *mask)
{
#ifdef CONFIG_SMP
- send_IPI_mask(*mask, LOCAL_TIMER_VECTOR);
+ send_IPI_mask(mask, LOCAL_TIMER_VECTOR);
#endif
}
--- linux-2.6-for-ingo.orig/arch/x86/kernel/crash.c
+++ linux-2.6-for-ingo/arch/x86/kernel/crash.c
@@ -77,10 +77,7 @@ static int crash_nmi_callback(struct not
static void smp_send_nmi_allbutself(void)
{
- cpumask_t mask = cpu_online_map;
- cpu_clear(safe_smp_processor_id(), mask);
- if (!cpus_empty(mask))
- send_IPI_mask(mask, NMI_VECTOR);
+ send_IPI_allbutself(NMI_VECTOR);
}
static struct notifier_block crash_nmi_nb = {
--- linux-2.6-for-ingo.orig/arch/x86/kernel/genapic_flat_64.c
+++ linux-2.6-for-ingo/arch/x86/kernel/genapic_flat_64.c
@@ -30,12 +30,12 @@ static int flat_acpi_madt_oem_check(char
return 1;
}
-static cpumask_t flat_target_cpus(void)
+static const cpumask_t *flat_target_cpus(void)
{
- return cpu_online_map;
+ return &cpu_online_map;
}
-static cpumask_t flat_vector_allocation_domain(int cpu)
+static void flat_vector_allocation_domain(int cpu, cpumask_t *retmask)
{
/* Careful. Some cpus do not strictly honor the set of cpus
* specified in the interrupt destination when using lowest
@@ -45,8 +45,7 @@ static cpumask_t flat_vector_allocation_
* deliver interrupts to the wrong hyperthread when only one
* hyperthread was specified in the interrupt desitination.
*/
- cpumask_t domain = { { [0] = APIC_ALL_CPUS, } };
- return domain;
+ *retmask = (cpumask_t) { {[0] = APIC_ALL_CPUS, } };
}
/*
@@ -69,9 +68,8 @@ static void flat_init_apic_ldr(void)
apic_write(APIC_LDR, val);
}
-static void flat_send_IPI_mask(cpumask_t cpumask, int vector)
+static inline void _flat_send_IPI_mask(unsigned long mask, int vector)
{
- unsigned long mask = cpus_addr(cpumask)[0];
unsigned long flags;
local_irq_save(flags);
@@ -79,20 +77,40 @@ static void flat_send_IPI_mask(cpumask_t
local_irq_restore(flags);
}
+static void flat_send_IPI_mask(const cpumask_t *cpumask, int vector)
+{
+ unsigned long mask = cpus_addr(*cpumask)[0];
+
+ _flat_send_IPI_mask(mask, vector);
+}
+
+static void flat_send_IPI_mask_allbutself(const cpumask_t *cpumask, int vector)
+{
+ unsigned long mask = cpus_addr(*cpumask)[0];
+ int cpu = smp_processor_id();
+
+ if (cpu < BITS_PER_LONG)
+ clear_bit(cpu, &mask);
+ _flat_send_IPI_mask(mask, vector);
+}
+
static void flat_send_IPI_allbutself(int vector)
{
+ int cpu = smp_processor_id();
#ifdef CONFIG_HOTPLUG_CPU
int hotplug = 1;
#else
int hotplug = 0;
#endif
if (hotplug || vector == NMI_VECTOR) {
- cpumask_t allbutme = cpu_online_map;
+ if (!cpus_equal(cpu_online_map, cpumask_of_cpu(cpu))) {
+ unsigned long mask = cpus_addr(cpu_online_map)[0];
- cpu_clear(smp_processor_id(), allbutme);
+ if (cpu < BITS_PER_LONG)
+ clear_bit(cpu, &mask);
- if (!cpus_empty(allbutme))
- flat_send_IPI_mask(allbutme, vector);
+ _flat_send_IPI_mask(mask, vector);
+ }
} else if (num_online_cpus() > 1) {
__send_IPI_shortcut(APIC_DEST_ALLBUT, vector,APIC_DEST_LOGICAL);
}
@@ -101,7 +119,7 @@ static void flat_send_IPI_allbutself(int
static void flat_send_IPI_all(int vector)
{
if (vector == NMI_VECTOR)
- flat_send_IPI_mask(cpu_online_map, vector);
+ flat_send_IPI_mask(&cpu_online_map, vector);
else
__send_IPI_shortcut(APIC_DEST_ALLINC, vector, APIC_DEST_LOGICAL);
}
@@ -135,9 +153,9 @@ static int flat_apic_id_registered(void)
return physid_isset(read_xapic_id(), phys_cpu_present_map);
}
-static unsigned int flat_cpu_mask_to_apicid(cpumask_t cpumask)
+static unsigned int flat_cpu_mask_to_apicid(const cpumask_t *cpumask)
{
- return cpus_addr(cpumask)[0] & APIC_ALL_CPUS;
+ return cpus_addr(*cpumask)[0] & APIC_ALL_CPUS;
}
static unsigned int phys_pkg_id(int index_msb)
@@ -157,6 +175,7 @@ struct genapic apic_flat = {
.send_IPI_all = flat_send_IPI_all,
.send_IPI_allbutself = flat_send_IPI_allbutself,
.send_IPI_mask = flat_send_IPI_mask,
+ .send_IPI_mask_allbutself = flat_send_IPI_mask_allbutself,
.send_IPI_self = apic_send_IPI_self,
.cpu_mask_to_apicid = flat_cpu_mask_to_apicid,
.phys_pkg_id = phys_pkg_id,
@@ -188,35 +207,39 @@ static int physflat_acpi_madt_oem_check(
return 0;
}
-static cpumask_t physflat_target_cpus(void)
+static const cpumask_t *physflat_target_cpus(void)
{
- return cpu_online_map;
+ return &cpu_online_map;
}
-static cpumask_t physflat_vector_allocation_domain(int cpu)
+static void physflat_vector_allocation_domain(int cpu, cpumask_t *retmask)
{
- return cpumask_of_cpu(cpu);
+ cpus_clear(*retmask);
+ cpu_set(cpu, *retmask);
}
-static void physflat_send_IPI_mask(cpumask_t cpumask, int vector)
+static void physflat_send_IPI_mask(const cpumask_t *cpumask, int vector)
{
send_IPI_mask_sequence(cpumask, vector);
}
-static void physflat_send_IPI_allbutself(int vector)
+static void physflat_send_IPI_mask_allbutself(const cpumask_t *cpumask,
+ int vector)
{
- cpumask_t allbutme = cpu_online_map;
+ send_IPI_mask_allbutself(cpumask, vector);
+}
- cpu_clear(smp_processor_id(), allbutme);
- physflat_send_IPI_mask(allbutme, vector);
+static void physflat_send_IPI_allbutself(int vector)
+{
+ send_IPI_mask_allbutself(&cpu_online_map, vector);
}
static void physflat_send_IPI_all(int vector)
{
- physflat_send_IPI_mask(cpu_online_map, vector);
+ physflat_send_IPI_mask(&cpu_online_map, vector);
}
-static unsigned int physflat_cpu_mask_to_apicid(cpumask_t cpumask)
+static unsigned int physflat_cpu_mask_to_apicid(const cpumask_t *cpumask)
{
int cpu;
@@ -224,7 +247,7 @@ static unsigned int physflat_cpu_mask_to
* We're using fixed IRQ delivery, can only return one phys APIC ID.
* May as well be the first.
*/
- cpu = first_cpu(cpumask);
+ cpu = first_cpu(*cpumask);
if ((unsigned)cpu < nr_cpu_ids)
return per_cpu(x86_cpu_to_apicid, cpu);
else
@@ -243,6 +266,7 @@ struct genapic apic_physflat = {
.send_IPI_all = physflat_send_IPI_all,
.send_IPI_allbutself = physflat_send_IPI_allbutself,
.send_IPI_mask = physflat_send_IPI_mask,
+ .send_IPI_mask_allbutself = physflat_send_IPI_mask_allbutself,
.send_IPI_self = apic_send_IPI_self,
.cpu_mask_to_apicid = physflat_cpu_mask_to_apicid,
.phys_pkg_id = phys_pkg_id,
--- linux-2.6-for-ingo.orig/arch/x86/kernel/genx2apic_cluster.c
+++ linux-2.6-for-ingo/arch/x86/kernel/genx2apic_cluster.c
@@ -22,19 +22,18 @@ static int x2apic_acpi_madt_oem_check(ch
/* Start with all IRQs pointing to boot CPU. IRQ balancing will shift them. */
-static cpumask_t x2apic_target_cpus(void)
+static const cpumask_t *x2apic_target_cpus(void)
{
- return cpumask_of_cpu(0);
+ return &cpumask_of_cpu(0);
}
/*
* for now each logical cpu is in its own vector allocation domain.
*/
-static cpumask_t x2apic_vector_allocation_domain(int cpu)
+static void x2apic_vector_allocation_domain(int cpu, cpumask_t *retmask)
{
- cpumask_t domain = CPU_MASK_NONE;
- cpu_set(cpu, domain);
- return domain;
+ cpus_clear(*retmask);
+ cpu_set(cpu, *retmask);
}
static void __x2apic_send_IPI_dest(unsigned int apicid, int vector,
@@ -56,32 +55,52 @@ static void __x2apic_send_IPI_dest(unsig
* at once. We have 16 cpu's in a cluster. This will minimize IPI register
* writes.
*/
-static void x2apic_send_IPI_mask(cpumask_t mask, int vector)
+static void x2apic_send_IPI_mask(const cpumask_t *mask, int vector)
{
unsigned long flags;
unsigned long query_cpu;
local_irq_save(flags);
- for_each_cpu_mask(query_cpu, mask) {
- __x2apic_send_IPI_dest(per_cpu(x86_cpu_to_logical_apicid, query_cpu),
- vector, APIC_DEST_LOGICAL);
- }
+ for_each_cpu_mask_nr(query_cpu, *mask)
+ __x2apic_send_IPI_dest(
+ per_cpu(x86_cpu_to_logical_apicid, query_cpu),
+ vector, APIC_DEST_LOGICAL);
local_irq_restore(flags);
}
-static void x2apic_send_IPI_allbutself(int vector)
+static void x2apic_send_IPI_mask_allbutself(const cpumask_t *mask, int vector)
{
- cpumask_t mask = cpu_online_map;
+ unsigned long flags;
+ unsigned long query_cpu;
+ unsigned long this_cpu = smp_processor_id();
- cpu_clear(smp_processor_id(), mask);
+ local_irq_save(flags);
+ for_each_cpu_mask_nr(query_cpu, *mask)
+ if (query_cpu != this_cpu)
+ __x2apic_send_IPI_dest(
+ per_cpu(x86_cpu_to_logical_apicid, query_cpu),
+ vector, APIC_DEST_LOGICAL);
+ local_irq_restore(flags);
+}
- if (!cpus_empty(mask))
- x2apic_send_IPI_mask(mask, vector);
+static void x2apic_send_IPI_allbutself(int vector)
+{
+ unsigned long flags;
+ unsigned long query_cpu;
+ unsigned long this_cpu = smp_processor_id();
+
+ local_irq_save(flags);
+ for_each_online_cpu(query_cpu)
+ if (query_cpu != this_cpu)
+ __x2apic_send_IPI_dest(
+ per_cpu(x86_cpu_to_logical_apicid, query_cpu),
+ vector, APIC_DEST_LOGICAL);
+ local_irq_restore(flags);
}
static void x2apic_send_IPI_all(int vector)
{
- x2apic_send_IPI_mask(cpu_online_map, vector);
+ x2apic_send_IPI_mask(&cpu_online_map, vector);
}
static int x2apic_apic_id_registered(void)
@@ -89,7 +108,7 @@ static int x2apic_apic_id_registered(voi
return 1;
}
-static unsigned int x2apic_cpu_mask_to_apicid(cpumask_t cpumask)
+static unsigned int x2apic_cpu_mask_to_apicid(const cpumask_t *cpumask)
{
int cpu;
@@ -97,8 +116,8 @@ static unsigned int x2apic_cpu_mask_to_a
* We're using fixed IRQ delivery, can only return one phys APIC ID.
* May as well be the first.
*/
- cpu = first_cpu(cpumask);
- if ((unsigned)cpu < NR_CPUS)
+ cpu = first_cpu(*cpumask);
+ if ((unsigned)cpu < nr_cpu_ids)
return per_cpu(x86_cpu_to_logical_apicid, cpu);
else
return BAD_APICID;
@@ -150,6 +169,7 @@ struct genapic apic_x2apic_cluster = {
.send_IPI_all = x2apic_send_IPI_all,
.send_IPI_allbutself = x2apic_send_IPI_allbutself,
.send_IPI_mask = x2apic_send_IPI_mask,
+ .send_IPI_mask_allbutself = x2apic_send_IPI_mask_allbutself,
.send_IPI_self = x2apic_send_IPI_self,
.cpu_mask_to_apicid = x2apic_cpu_mask_to_apicid,
.phys_pkg_id = phys_pkg_id,
--- linux-2.6-for-ingo.orig/arch/x86/kernel/genx2apic_phys.c
+++ linux-2.6-for-ingo/arch/x86/kernel/genx2apic_phys.c
@@ -29,16 +29,15 @@ static int x2apic_acpi_madt_oem_check(ch
/* Start with all IRQs pointing to boot CPU. IRQ balancing will shift them. */
-static cpumask_t x2apic_target_cpus(void)
+static const cpumask_t *x2apic_target_cpus(void)
{
- return cpumask_of_cpu(0);
+ return &cpumask_of_cpu(0);
}
-static cpumask_t x2apic_vector_allocation_domain(int cpu)
+static void x2apic_vector_allocation_domain(int cpu, cpumask_t *retmask)
{
- cpumask_t domain = CPU_MASK_NONE;
- cpu_set(cpu, domain);
- return domain;
+ cpus_clear(*retmask);
+ cpu_set(cpu, *retmask);
}
static void __x2apic_send_IPI_dest(unsigned int apicid, int vector,
@@ -54,32 +53,53 @@ static void __x2apic_send_IPI_dest(unsig
x2apic_icr_write(cfg, apicid);
}
-static void x2apic_send_IPI_mask(cpumask_t mask, int vector)
+static void x2apic_send_IPI_mask(const cpumask_t *mask, int vector)
{
unsigned long flags;
unsigned long query_cpu;
local_irq_save(flags);
- for_each_cpu_mask(query_cpu, mask) {
+ for_each_cpu_mask_nr(query_cpu, *mask) {
__x2apic_send_IPI_dest(per_cpu(x86_cpu_to_apicid, query_cpu),
vector, APIC_DEST_PHYSICAL);
}
local_irq_restore(flags);
}
-static void x2apic_send_IPI_allbutself(int vector)
+static void x2apic_send_IPI_mask_allbutself(const cpumask_t *mask, int vector)
{
- cpumask_t mask = cpu_online_map;
+ unsigned long flags;
+ unsigned long query_cpu;
+ unsigned long this_cpu = smp_processor_id();
+
+ local_irq_save(flags);
+ for_each_cpu_mask_nr(query_cpu, *mask) {
+ if (query_cpu != this_cpu)
+ __x2apic_send_IPI_dest(
+ per_cpu(x86_cpu_to_apicid, query_cpu),
+ vector, APIC_DEST_PHYSICAL);
+ }
+ local_irq_restore(flags);
+}
- cpu_clear(smp_processor_id(), mask);
+static void x2apic_send_IPI_allbutself(int vector)
+{
+ unsigned long flags;
+ unsigned long query_cpu;
+ unsigned long this_cpu = smp_processor_id();
- if (!cpus_empty(mask))
- x2apic_send_IPI_mask(mask, vector);
+ local_irq_save(flags);
+ for_each_online_cpu(query_cpu)
+ if (query_cpu != this_cpu)
+ __x2apic_send_IPI_dest(
+ per_cpu(x86_cpu_to_apicid, query_cpu),
+ vector, APIC_DEST_PHYSICAL);
+ local_irq_restore(flags);
}
static void x2apic_send_IPI_all(int vector)
{
- x2apic_send_IPI_mask(cpu_online_map, vector);
+ x2apic_send_IPI_mask(&cpu_online_map, vector);
}
static int x2apic_apic_id_registered(void)
@@ -87,7 +107,7 @@ static int x2apic_apic_id_registered(voi
return 1;
}
-static unsigned int x2apic_cpu_mask_to_apicid(cpumask_t cpumask)
+static unsigned int x2apic_cpu_mask_to_apicid(const cpumask_t *cpumask)
{
int cpu;
@@ -95,8 +115,8 @@ static unsigned int x2apic_cpu_mask_to_a
* We're using fixed IRQ delivery, can only return one phys APIC ID.
* May as well be the first.
*/
- cpu = first_cpu(cpumask);
- if ((unsigned)cpu < NR_CPUS)
+ cpu = first_cpu(*cpumask);
+ if ((unsigned)cpu < nr_cpu_ids)
return per_cpu(x86_cpu_to_apicid, cpu);
else
return BAD_APICID;
@@ -145,6 +165,7 @@ struct genapic apic_x2apic_phys = {
.send_IPI_all = x2apic_send_IPI_all,
.send_IPI_allbutself = x2apic_send_IPI_allbutself,
.send_IPI_mask = x2apic_send_IPI_mask,
+ .send_IPI_mask_allbutself = x2apic_send_IPI_mask_allbutself,
.send_IPI_self = x2apic_send_IPI_self,
.cpu_mask_to_apicid = x2apic_cpu_mask_to_apicid,
.phys_pkg_id = phys_pkg_id,
--- linux-2.6-for-ingo.orig/arch/x86/kernel/genx2apic_uv_x.c
+++ linux-2.6-for-ingo/arch/x86/kernel/genx2apic_uv_x.c
@@ -75,16 +75,15 @@ EXPORT_SYMBOL(sn_rtc_cycles_per_second);
/* Start with all IRQs pointing to boot CPU. IRQ balancing will shift them. */
-static cpumask_t uv_target_cpus(void)
+static const cpumask_t *uv_target_cpus(void)
{
- return cpumask_of_cpu(0);
+ return &cpumask_of_cpu(0);
}
-static cpumask_t uv_vector_allocation_domain(int cpu)
+static void uv_vector_allocation_domain(int cpu, cpumask_t *retmask)
{
- cpumask_t domain = CPU_MASK_NONE;
- cpu_set(cpu, domain);
- return domain;
+ cpus_clear(*retmask);
+ cpu_set(cpu, *retmask);
}
int uv_wakeup_secondary(int phys_apicid, unsigned int start_rip)
@@ -123,28 +122,37 @@ static void uv_send_IPI_one(int cpu, int
uv_write_global_mmr64(pnode, UVH_IPI_INT, val);
}
-static void uv_send_IPI_mask(cpumask_t mask, int vector)
+static void uv_send_IPI_mask(const cpumask_t *mask, int vector)
{
unsigned int cpu;
- for_each_possible_cpu(cpu)
- if (cpu_isset(cpu, mask))
+ for_each_cpu_mask_nr(cpu, *mask)
+ uv_send_IPI_one(cpu, vector);
+}
+
+static void uv_send_IPI_mask_allbutself(const cpumask_t *mask, int vector)
+{
+ unsigned int cpu;
+ unsigned int this_cpu = smp_processor_id();
+
+ for_each_cpu_mask_nr(cpu, *mask)
+ if (cpu != this_cpu)
uv_send_IPI_one(cpu, vector);
}
static void uv_send_IPI_allbutself(int vector)
{
- cpumask_t mask = cpu_online_map;
-
- cpu_clear(smp_processor_id(), mask);
+ unsigned int cpu;
+ unsigned int this_cpu = smp_processor_id();
- if (!cpus_empty(mask))
- uv_send_IPI_mask(mask, vector);
+ for_each_online_cpu(cpu)
+ if (cpu != this_cpu)
+ uv_send_IPI_one(cpu, vector);
}
static void uv_send_IPI_all(int vector)
{
- uv_send_IPI_mask(cpu_online_map, vector);
+ uv_send_IPI_mask(&cpu_online_map, vector);
}
static int uv_apic_id_registered(void)
@@ -156,7 +164,7 @@ static void uv_init_apic_ldr(void)
{
}
-static unsigned int uv_cpu_mask_to_apicid(cpumask_t cpumask)
+static unsigned int uv_cpu_mask_to_apicid(const cpumask_t *cpumask)
{
int cpu;
@@ -164,7 +172,7 @@ static unsigned int uv_cpu_mask_to_apici
* We're using fixed IRQ delivery, can only return one phys APIC ID.
* May as well be the first.
*/
- cpu = first_cpu(cpumask);
+ cpu = first_cpu(*cpumask);
if ((unsigned)cpu < nr_cpu_ids)
return per_cpu(x86_cpu_to_apicid, cpu);
else
@@ -218,6 +226,7 @@ struct genapic apic_x2apic_uv_x = {
.send_IPI_all = uv_send_IPI_all,
.send_IPI_allbutself = uv_send_IPI_allbutself,
.send_IPI_mask = uv_send_IPI_mask,
+ .send_IPI_mask_allbutself = uv_send_IPI_mask_allbutself,
.send_IPI_self = uv_send_IPI_self,
.cpu_mask_to_apicid = uv_cpu_mask_to_apicid,
.phys_pkg_id = phys_pkg_id,
--- linux-2.6-for-ingo.orig/arch/x86/kernel/io_apic.c
+++ linux-2.6-for-ingo/arch/x86/kernel/io_apic.c
@@ -231,7 +231,8 @@ static struct irq_cfg *irq_cfg(unsigned
#endif
-static inline void set_extra_move_desc(struct irq_desc *desc, cpumask_t mask)
+static inline void
+set_extra_move_desc(struct irq_desc *desc, const struct cpumask *mask)
{
}
@@ -396,7 +397,8 @@ static void __target_IO_APIC_irq(unsigne
}
}
-static int assign_irq_vector(int irq, struct irq_cfg *cfg, cpumask_t mask);
+static int
+assign_irq_vector(int irq, struct irq_cfg *cfg, const struct cpumask *mask);
static void set_ioapic_affinity_irq_desc(struct irq_desc *desc,
const struct cpumask *mask)
@@ -412,13 +414,13 @@ static void set_ioapic_affinity_irq_desc
irq = desc->irq;
cfg = desc->chip_data;
- if (assign_irq_vector(irq, cfg, *mask))
+ if (assign_irq_vector(irq, cfg, mask))
return;
- set_extra_move_desc(desc, *mask);
+ set_extra_move_desc(desc, mask);
cpumask_and(&tmp, &cfg->domain, mask);
- dest = cpu_mask_to_apicid(tmp);
+ dest = cpu_mask_to_apicid(&tmp);
/*
* Only the high 8 bits are valid.
*/
@@ -1099,7 +1101,8 @@ void unlock_vector_lock(void)
spin_unlock(&vector_lock);
}
-static int __assign_irq_vector(int irq, struct irq_cfg *cfg, cpumask_t mask)
+static int
+__assign_irq_vector(int irq, struct irq_cfg *cfg, const struct cpumask *mask)
{
/*
* NOTE! The local APIC isn't very good at handling
@@ -1115,35 +1118,32 @@ static int __assign_irq_vector(int irq,
static int current_vector = FIRST_DEVICE_VECTOR, current_offset = 0;
unsigned int old_vector;
int cpu;
+ cpumask_t tmp_mask;
if ((cfg->move_in_progress) || cfg->move_cleanup_count)
return -EBUSY;
- /* Only try and allocate irqs on cpus that are present */
- cpus_and(mask, mask, cpu_online_map);
-
old_vector = cfg->vector;
if (old_vector) {
- cpumask_t tmp;
- cpus_and(tmp, cfg->domain, mask);
- if (!cpus_empty(tmp))
+ cpus_and(tmp_mask, *mask, cpu_online_map);
+ cpus_and(tmp_mask, cfg->domain, tmp_mask);
+ if (!cpus_empty(tmp_mask))
return 0;
}
- for_each_cpu_mask_nr(cpu, mask) {
- cpumask_t domain, new_mask;
+ /* Only try and allocate irqs on cpus that are present */
+ for_each_cpu_and(cpu, mask, &cpu_online_map) {
int new_cpu;
int vector, offset;
- domain = vector_allocation_domain(cpu);
- cpus_and(new_mask, domain, cpu_online_map);
+ vector_allocation_domain(cpu, &tmp_mask);
vector = current_vector;
offset = current_offset;
next:
vector += 8;
if (vector >= first_system_vector) {
- /* If we run out of vectors on large boxen, must share them. */
+ /* If out of vectors on large boxen, must share them. */
offset = (offset + 1) % 8;
vector = FIRST_DEVICE_VECTOR + offset;
}
@@ -1156,7 +1156,7 @@ next:
if (vector == SYSCALL_VECTOR)
goto next;
#endif
- for_each_cpu_mask_nr(new_cpu, new_mask)
+ for_each_cpu_and(new_cpu, &tmp_mask, &cpu_online_map)
if (per_cpu(vector_irq, new_cpu)[vector] != -1)
goto next;
/* Found one! */
@@ -1166,16 +1166,17 @@ next:
cfg->move_in_progress = 1;
cfg->old_domain = cfg->domain;
}
- for_each_cpu_mask_nr(new_cpu, new_mask)
+ for_each_cpu_and(new_cpu, &tmp_mask, &cpu_online_map)
per_cpu(vector_irq, new_cpu)[vector] = irq;
cfg->vector = vector;
- cfg->domain = domain;
+ cfg->domain = tmp_mask;
return 0;
}
return -ENOSPC;
}
-static int assign_irq_vector(int irq, struct irq_cfg *cfg, cpumask_t mask)
+static int
+assign_irq_vector(int irq, struct irq_cfg *cfg, const struct cpumask *mask)
{
int err;
unsigned long flags;
@@ -1384,8 +1385,8 @@ static void setup_IO_APIC_irq(int apic,
cfg = desc->chip_data;
- mask = TARGET_CPUS;
- if (assign_irq_vector(irq, cfg, mask))
+ mask = *TARGET_CPUS;
+ if (assign_irq_vector(irq, cfg, &mask))
return;
cpus_and(mask, cfg->domain, mask);
@@ -1398,7 +1399,7 @@ static void setup_IO_APIC_irq(int apic,
if (setup_ioapic_entry(mp_ioapics[apic].mp_apicid, irq, &entry,
- cpu_mask_to_apicid(mask), trigger, polarity,
+ cpu_mask_to_apicid(&mask), trigger, polarity,
cfg->vector)) {
printk("Failed to setup ioapic entry for ioapic %d, pin %d\n",
mp_ioapics[apic].mp_apicid, pin);
@@ -2121,7 +2122,7 @@ static int ioapic_retrigger_irq(unsigned
unsigned long flags;
spin_lock_irqsave(&vector_lock, flags);
- send_IPI_mask(cpumask_of_cpu(first_cpu(cfg->domain)), cfg->vector);
+ send_IPI_mask(&cpumask_of_cpu(first_cpu(cfg->domain)), cfg->vector);
spin_unlock_irqrestore(&vector_lock, flags);
return 1;
@@ -2170,18 +2171,19 @@ static DECLARE_DELAYED_WORK(ir_migration
* as simple as edge triggered migration and we can do the irq migration
* with a simple atomic update to IO-APIC RTE.
*/
-static void migrate_ioapic_irq_desc(struct irq_desc *desc, cpumask_t mask)
+static void
+migrate_ioapic_irq_desc(struct irq_desc *desc, const struct cpumask *mask)
{
struct irq_cfg *cfg;
- cpumask_t tmp, cleanup_mask;
+ cpumask_t tmpmask;
struct irte irte;
int modify_ioapic_rte;
unsigned int dest;
unsigned long flags;
unsigned int irq;
- cpus_and(tmp, mask, cpu_online_map);
- if (cpus_empty(tmp))
+ cpus_and(tmpmask, *mask, cpu_online_map);
+ if (cpus_empty(tmpmask))
return;
irq = desc->irq;
@@ -2194,8 +2196,8 @@ static void migrate_ioapic_irq_desc(stru
set_extra_move_desc(desc, mask);
- cpus_and(tmp, cfg->domain, mask);
- dest = cpu_mask_to_apicid(tmp);
+ cpus_and(tmpmask, cfg->domain, *mask);
+ dest = cpu_mask_to_apicid(&tmpmask);
modify_ioapic_rte = desc->status & IRQ_LEVEL;
if (modify_ioapic_rte) {
@@ -2213,13 +2215,13 @@ static void migrate_ioapic_irq_desc(stru
modify_irte(irq, &irte);
if (cfg->move_in_progress) {
- cpus_and(cleanup_mask, cfg->old_domain, cpu_online_map);
- cfg->move_cleanup_count = cpus_weight(cleanup_mask);
- send_IPI_mask(cleanup_mask, IRQ_MOVE_CLEANUP_VECTOR);
+ cpus_and(tmpmask, cfg->old_domain, cpu_online_map);
+ cfg->move_cleanup_count = cpus_weight(tmpmask);
+ send_IPI_mask(&tmpmask, IRQ_MOVE_CLEANUP_VECTOR);
cfg->move_in_progress = 0;
}
- desc->affinity = mask;
+ desc->affinity = *mask;
}
static int migrate_irq_remapped_level_desc(struct irq_desc *desc)
@@ -2241,7 +2243,7 @@ static int migrate_irq_remapped_level_de
}
/* everthing is clear. we have right of way */
- migrate_ioapic_irq_desc(desc, desc->pending_mask);
+ migrate_ioapic_irq_desc(desc, &desc->pending_mask);
ret = 0;
desc->status &= ~IRQ_MOVE_PENDING;
@@ -2359,7 +2361,7 @@ static void irq_complete_move(struct irq
cpus_and(cleanup_mask, cfg->old_domain, cpu_online_map);
cfg->move_cleanup_count = cpus_weight(cleanup_mask);
- send_IPI_mask(cleanup_mask, IRQ_MOVE_CLEANUP_VECTOR);
+ send_IPI_mask(&cleanup_mask, IRQ_MOVE_CLEANUP_VECTOR);
cfg->move_in_progress = 0;
}
}
@@ -3089,13 +3091,13 @@ static int msi_compose_msg(struct pci_de
cpumask_t tmp;
cfg = irq_cfg(irq);
- tmp = TARGET_CPUS;
- err = assign_irq_vector(irq, cfg, tmp);
+ tmp = *TARGET_CPUS;
+ err = assign_irq_vector(irq, cfg, &tmp);
if (err)
return err;
cpus_and(tmp, cfg->domain, tmp);
- dest = cpu_mask_to_apicid(tmp);
+ dest = cpu_mask_to_apicid(&tmp);
#ifdef CONFIG_INTR_REMAP
if (irq_remapped(irq)) {
@@ -3161,13 +3163,13 @@ static void set_msi_irq_affinity(unsigne
return;
cfg = desc->chip_data;
- if (assign_irq_vector(irq, cfg, *mask))
+ if (assign_irq_vector(irq, cfg, mask))
return;
- set_extra_move_desc(desc, *mask);
+ set_extra_move_desc(desc, mask);
cpumask_and(&tmp, &cfg->domain, mask);
- dest = cpu_mask_to_apicid(tmp);
+ dest = cpu_mask_to_apicid(&tmp);
read_msi_msg_desc(desc, &msg);
@@ -3184,8 +3186,8 @@ static void set_msi_irq_affinity(unsigne
* Migrate the MSI irq to another cpumask. This migration is
* done in the process context using interrupt-remapping hardware.
*/
-static void ir_set_msi_irq_affinity(unsigned int irq,
- const struct cpumask *mask)
+static void
+ir_set_msi_irq_affinity(unsigned int irq, const struct cpumask *mask)
{
struct irq_desc *desc = irq_to_desc(irq);
struct irq_cfg *cfg;
@@ -3200,13 +3202,13 @@ static void ir_set_msi_irq_affinity(unsi
return;
cfg = desc->chip_data;
- if (assign_irq_vector(irq, cfg, *mask))
+ if (assign_irq_vector(irq, cfg, mask))
return;
set_extra_move_desc(desc, mask);
cpumask_and(&tmp, &cfg->domain, mask);
- dest = cpu_mask_to_apicid(tmp);
+ dest = cpu_mask_to_apicid(&tmp);
irte.vector = cfg->vector;
irte.dest_id = IRTE_DEST(dest);
@@ -3224,7 +3226,7 @@ static void ir_set_msi_irq_affinity(unsi
if (cfg->move_in_progress) {
cpus_and(cleanup_mask, cfg->old_domain, cpu_online_map);
cfg->move_cleanup_count = cpus_weight(cleanup_mask);
- send_IPI_mask(cleanup_mask, IRQ_MOVE_CLEANUP_VECTOR);
+ send_IPI_mask(&cleanup_mask, IRQ_MOVE_CLEANUP_VECTOR);
cfg->move_in_progress = 0;
}
@@ -3419,7 +3421,7 @@ void arch_teardown_msi_irq(unsigned int
#ifdef CONFIG_DMAR
#ifdef CONFIG_SMP
-static void dmar_msi_set_affinity(unsigned int irq, const struct cpumask *mask)
+static void dmar_msi_set_affinity(unsigned int irq, const cpumask_t *mask)
{
struct irq_desc *desc = irq_to_desc(irq);
struct irq_cfg *cfg;
@@ -3431,13 +3433,13 @@ static void dmar_msi_set_affinity(unsign
return;
cfg = desc->chip_data;
- if (assign_irq_vector(irq, cfg, *mask))
+ if (assign_irq_vector(irq, cfg, mask))
return;
- set_extra_move_desc(desc, *mask);
+ set_extra_move_desc(desc, mask);
cpumask_and(&tmp, &cfg->domain, mask);
- dest = cpu_mask_to_apicid(tmp);
+ dest = cpu_mask_to_apicid(&tmp);
dmar_msi_read(irq, &msg);
@@ -3481,7 +3483,7 @@ int arch_setup_dmar_msi(unsigned int irq
#ifdef CONFIG_HPET_TIMER
#ifdef CONFIG_SMP
-static void hpet_msi_set_affinity(unsigned int irq, const struct cpumask *mask)
+static void hpet_msi_set_affinity(unsigned int irq, const cpumask_t *mask)
{
struct irq_desc *desc = irq_to_desc(irq);
struct irq_cfg *cfg;
@@ -3493,13 +3495,13 @@ static void hpet_msi_set_affinity(unsign
return;
cfg = desc->chip_data;
- if (assign_irq_vector(irq, cfg, *mask))
+ if (assign_irq_vector(irq, cfg, mask))
return;
- set_extra_move_desc(desc, *mask);
+ set_extra_move_desc(desc, mask);
cpumask_and(&tmp, &cfg->domain, mask);
- dest = cpu_mask_to_apicid(tmp);
+ dest = cpu_mask_to_apicid(&tmp);
hpet_msi_read(irq, &msg);
@@ -3564,7 +3566,7 @@ static void target_ht_irq(unsigned int i
write_ht_irq_msg(irq, &msg);
}
-static void set_ht_irq_affinity(unsigned int irq, const struct cpumask *mask)
+static void set_ht_irq_affinity(unsigned int irq, const cpumask_t *mask)
{
struct irq_desc *desc = irq_to_desc(irq);
struct irq_cfg *cfg;
@@ -3575,13 +3577,13 @@ static void set_ht_irq_affinity(unsigned
return;
cfg = desc->chip_data;
- if (assign_irq_vector(irq, cfg, *mask))
+ if (assign_irq_vector(irq, cfg, mask))
return;
- set_extra_move_desc(desc, *mask);
+ set_extra_move_desc(desc, mask);
cpumask_and(&tmp, &cfg->domain, mask);
- dest = cpu_mask_to_apicid(tmp);
+ dest = cpu_mask_to_apicid(&tmp);
target_ht_irq(irq, dest, cfg->vector);
cpumask_copy(&desc->affinity, mask);
@@ -3607,14 +3609,13 @@ int arch_setup_ht_irq(unsigned int irq,
cpumask_t tmp;
cfg = irq_cfg(irq);
- tmp = TARGET_CPUS;
- err = assign_irq_vector(irq, cfg, tmp);
+ err = assign_irq_vector(irq, cfg, TARGET_CPUS);
if (!err) {
struct ht_irq_msg msg;
unsigned dest;
cpus_and(tmp, cfg->domain, tmp);
- dest = cpu_mask_to_apicid(tmp);
+ dest = cpu_mask_to_apicid(&tmp);
msg.address_hi = HT_IRQ_HIGH_DEST_ID(dest);
@@ -3650,7 +3651,7 @@ int arch_setup_ht_irq(unsigned int irq,
int arch_enable_uv_irq(char *irq_name, unsigned int irq, int cpu, int mmr_blade,
unsigned long mmr_offset)
{
- const cpumask_t *eligible_cpu = get_cpu_mask(cpu);
+ const cpumask_t *eligible_cpu = &cpumask_of_cpu(cpu);
struct irq_cfg *cfg;
int mmr_pnode;
unsigned long mmr_value;
@@ -3660,7 +3661,7 @@ int arch_enable_uv_irq(char *irq_name, u
cfg = irq_cfg(irq);
- err = assign_irq_vector(irq, cfg, *eligible_cpu);
+ err = assign_irq_vector(irq, cfg, eligible_cpu);
if (err != 0)
return err;
@@ -3679,7 +3680,7 @@ int arch_enable_uv_irq(char *irq_name, u
entry->polarity = 0;
entry->trigger = 0;
entry->mask = 0;
- entry->dest = cpu_mask_to_apicid(*eligible_cpu);
+ entry->dest = cpu_mask_to_apicid(eligible_cpu);
mmr_pnode = uv_blade_to_pnode(mmr_blade);
uv_write_global_mmr64(mmr_pnode, mmr_offset, mmr_value);
@@ -3890,7 +3891,7 @@ void __init setup_ioapic_dest(void)
int pin, ioapic, irq, irq_entry;
struct irq_desc *desc;
struct irq_cfg *cfg;
- cpumask_t mask;
+ const cpumask_t *mask;
if (skip_ioapic_setup == 1)
return;
@@ -3921,16 +3922,16 @@ void __init setup_ioapic_dest(void)
*/
if (desc->status &
(IRQ_NO_BALANCING | IRQ_AFFINITY_SET))
- mask = desc->affinity;
+ mask = &desc->affinity;
else
mask = TARGET_CPUS;
#ifdef CONFIG_INTR_REMAP
if (intr_remapping_enabled)
- set_ir_ioapic_affinity_irq_desc(desc, &mask);
+ set_ir_ioapic_affinity_irq_desc(desc, mask);
else
#endif
- set_ioapic_affinity_irq_desc(desc, &mask);
+ set_ioapic_affinity_irq_desc(desc, mask);
}
}
--- linux-2.6-for-ingo.orig/arch/x86/kernel/ipi.c
+++ linux-2.6-for-ingo/arch/x86/kernel/ipi.c
@@ -116,9 +116,9 @@ static inline void __send_IPI_dest_field
/*
* This is only used on smaller machines.
*/
-void send_IPI_mask_bitmask(cpumask_t cpumask, int vector)
+void send_IPI_mask_bitmask(const cpumask_t *cpumask, int vector)
{
- unsigned long mask = cpus_addr(cpumask)[0];
+ unsigned long mask = cpus_addr(*cpumask)[0];
unsigned long flags;
local_irq_save(flags);
@@ -127,7 +127,7 @@ void send_IPI_mask_bitmask(cpumask_t cpu
local_irq_restore(flags);
}
-void send_IPI_mask_sequence(cpumask_t mask, int vector)
+void send_IPI_mask_sequence(const cpumask_t *mask, int vector)
{
unsigned long flags;
unsigned int query_cpu;
@@ -139,12 +139,24 @@ void send_IPI_mask_sequence(cpumask_t ma
*/
local_irq_save(flags);
- for_each_possible_cpu(query_cpu) {
- if (cpu_isset(query_cpu, mask)) {
+ for_each_cpu_mask_nr(query_cpu, *mask)
+ __send_IPI_dest_field(cpu_to_logical_apicid(query_cpu), vector);
+ local_irq_restore(flags);
+}
+
+void send_IPI_mask_allbutself(const cpumask_t *mask, int vector)
+{
+ unsigned long flags;
+ unsigned int query_cpu;
+ unsigned int this_cpu = smp_processor_id();
+
+ /* See Hack comment above */
+
+ local_irq_save(flags);
+ for_each_cpu_mask_nr(query_cpu, *mask)
+ if (query_cpu != this_cpu)
__send_IPI_dest_field(cpu_to_logical_apicid(query_cpu),
vector);
- }
- }
local_irq_restore(flags);
}
--- linux-2.6-for-ingo.orig/arch/x86/kernel/smp.c
+++ linux-2.6-for-ingo/arch/x86/kernel/smp.c
@@ -118,22 +118,22 @@ static void native_smp_send_reschedule(i
WARN_ON(1);
return;
}
- send_IPI_mask(cpumask_of_cpu(cpu), RESCHEDULE_VECTOR);
+ send_IPI_mask(&cpumask_of_cpu(cpu), RESCHEDULE_VECTOR);
}
void native_send_call_func_single_ipi(int cpu)
{
- send_IPI_mask(cpumask_of_cpu(cpu), CALL_FUNCTION_SINGLE_VECTOR);
+ send_IPI_mask(&cpumask_of_cpu(cpu), CALL_FUNCTION_SINGLE_VECTOR);
}
-void native_send_call_func_ipi(cpumask_t mask)
+void native_send_call_func_ipi(const cpumask_t *mask)
{
cpumask_t allbutself;
allbutself = cpu_online_map;
cpu_clear(smp_processor_id(), allbutself);
- if (cpus_equal(mask, allbutself) &&
+ if (cpus_equal(*mask, allbutself) &&
cpus_equal(cpu_online_map, cpu_callout_map))
send_IPI_allbutself(CALL_FUNCTION_VECTOR);
else
--- linux-2.6-for-ingo.orig/arch/x86/kernel/tlb_32.c
+++ linux-2.6-for-ingo/arch/x86/kernel/tlb_32.c
@@ -164,7 +164,7 @@ void native_flush_tlb_others(const cpuma
* We have to send the IPI only to
* CPUs affected.
*/
- send_IPI_mask(cpumask, INVALIDATE_TLB_VECTOR);
+ send_IPI_mask(&cpumask, INVALIDATE_TLB_VECTOR);
while (!cpus_empty(flush_cpumask))
/* nothing. lockup detection does not belong here */
--- linux-2.6-for-ingo.orig/arch/x86/kernel/tlb_64.c
+++ linux-2.6-for-ingo/arch/x86/kernel/tlb_64.c
@@ -191,7 +191,7 @@ void native_flush_tlb_others(const cpuma
* We have to send the IPI only to
* CPUs affected.
*/
- send_IPI_mask(cpumask, INVALIDATE_TLB_VECTOR_START + sender);
+ send_IPI_mask(&cpumask, INVALIDATE_TLB_VECTOR_START + sender);
while (!cpus_empty(f->flush_cpumask))
cpu_relax();
--- linux-2.6-for-ingo.orig/arch/x86/mach-generic/bigsmp.c
+++ linux-2.6-for-ingo/arch/x86/mach-generic/bigsmp.c
@@ -42,9 +42,10 @@ static const struct dmi_system_id bigsmp
{ }
};
-static cpumask_t vector_allocation_domain(int cpu)
+static void vector_allocation_domain(int cpu, cpumask_t *retmask)
{
- return cpumask_of_cpu(cpu);
+ cpus_clear(*retmask);
+ cpu_set(cpu, *retmask);
}
static int probe_bigsmp(void)
--- linux-2.6-for-ingo.orig/arch/x86/mach-generic/es7000.c
+++ linux-2.6-for-ingo/arch/x86/mach-generic/es7000.c
@@ -87,7 +87,7 @@ static int __init acpi_madt_oem_check(ch
}
#endif
-static cpumask_t vector_allocation_domain(int cpu)
+static void vector_allocation_domain(int cpu, cpumask_t *retmask)
{
/* Careful. Some cpus do not strictly honor the set of cpus
* specified in the interrupt destination when using lowest
@@ -97,8 +97,7 @@ static cpumask_t vector_allocation_domai
* deliver interrupts to the wrong hyperthread when only one
* hyperthread was specified in the interrupt desitination.
*/
- cpumask_t domain = { { [0] = APIC_ALL_CPUS, } };
- return domain;
+ *retmask = (cpumask_t){ { [0] = APIC_ALL_CPUS, } };
}
struct genapic __initdata_refok apic_es7000 = APIC_INIT("es7000", probe_es7000);
--- linux-2.6-for-ingo.orig/arch/x86/mach-generic/numaq.c
+++ linux-2.6-for-ingo/arch/x86/mach-generic/numaq.c
@@ -38,7 +38,7 @@ static int acpi_madt_oem_check(char *oem
return 0;
}
-static cpumask_t vector_allocation_domain(int cpu)
+static void vector_allocation_domain(int cpu, cpumask_t *retmask)
{
/* Careful. Some cpus do not strictly honor the set of cpus
* specified in the interrupt destination when using lowest
@@ -48,8 +48,7 @@ static cpumask_t vector_allocation_domai
* deliver interrupts to the wrong hyperthread when only one
* hyperthread was specified in the interrupt desitination.
*/
- cpumask_t domain = { { [0] = APIC_ALL_CPUS, } };
- return domain;
+ *retmask = (cpumask_t){ { [0] = APIC_ALL_CPUS, } };
}
struct genapic apic_numaq = APIC_INIT("NUMAQ", probe_numaq);
--- linux-2.6-for-ingo.orig/arch/x86/mach-generic/summit.c
+++ linux-2.6-for-ingo/arch/x86/mach-generic/summit.c
@@ -24,7 +24,7 @@ static int probe_summit(void)
return 0;
}
-static cpumask_t vector_allocation_domain(int cpu)
+static void vector_allocation_domain(int cpu, cpumask_t *retmask)
{
/* Careful. Some cpus do not strictly honor the set of cpus
* specified in the interrupt destination when using lowest
@@ -34,8 +34,7 @@ static cpumask_t vector_allocation_domai
* deliver interrupts to the wrong hyperthread when only one
* hyperthread was specified in the interrupt desitination.
*/
- cpumask_t domain = { { [0] = APIC_ALL_CPUS, } };
- return domain;
+ *retmask = (cpumask_t){ { [0] = APIC_ALL_CPUS, } };
}
struct genapic apic_summit = APIC_INIT("summit", probe_summit);
--- linux-2.6-for-ingo.orig/arch/x86/xen/smp.c
+++ linux-2.6-for-ingo/arch/x86/xen/smp.c
@@ -158,7 +158,7 @@ static void __init xen_fill_possible_map
{
int i, rc;
- for (i = 0; i < NR_CPUS; i++) {
+ for (i = 0; i < nr_cpu_ids; i++) {
rc = HYPERVISOR_vcpu_op(VCPUOP_is_up, i, NULL);
if (rc >= 0) {
num_processors++;
@@ -196,7 +196,7 @@ static void __init xen_smp_prepare_cpus(
/* Restrict the possible_map according to max_cpus. */
while ((num_possible_cpus() > 1) && (num_possible_cpus() > max_cpus)) {
- for (cpu = NR_CPUS - 1; !cpu_possible(cpu); cpu--)
+ for (cpu = nr_cpu_ids - 1; !cpu_possible(cpu); cpu--)
continue;
cpu_clear(cpu, cpu_possible_map);
}
@@ -408,24 +408,22 @@ static void xen_smp_send_reschedule(int
xen_send_IPI_one(cpu, XEN_RESCHEDULE_VECTOR);
}
-static void xen_send_IPI_mask(cpumask_t mask, enum ipi_vector vector)
+static void xen_send_IPI_mask(const cpumask_t *mask, enum ipi_vector vector)
{
unsigned cpu;
- cpus_and(mask, mask, cpu_online_map);
-
- for_each_cpu_mask_nr(cpu, mask)
+ for_each_cpu_and(cpu, mask, &cpu_online_map)
xen_send_IPI_one(cpu, vector);
}
-static void xen_smp_send_call_function_ipi(cpumask_t mask)
+static void xen_smp_send_call_function_ipi(const cpumask_t *mask)
{
int cpu;
xen_send_IPI_mask(mask, XEN_CALL_FUNCTION_VECTOR);
/* Make sure other vcpus get a chance to run if they need to. */
- for_each_cpu_mask_nr(cpu, mask) {
+ for_each_cpu_mask_nr(cpu, *mask) {
if (xen_vcpu_stolen(cpu)) {
HYPERVISOR_sched_op(SCHEDOP_yield, 0);
break;
@@ -435,7 +433,8 @@ static void xen_smp_send_call_function_i
static void xen_smp_send_call_function_single_ipi(int cpu)
{
- xen_send_IPI_mask(cpumask_of_cpu(cpu), XEN_CALL_FUNCTION_SINGLE_VECTOR);
+ xen_send_IPI_mask(&cpumask_of_cpu(cpu),
+ XEN_CALL_FUNCTION_SINGLE_VECTOR);
}
static irqreturn_t xen_call_function_interrupt(int irq, void *dev_id)
--
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/