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yaml
---
r: 136679
b: refs/heads/master
c: c5e9548
h: refs/heads/master
i:
  136677: 936e238
  136675: 3264877
  136671: 74e4fd1
v: v3
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Yinghai Lu authored and Ingo Molnar committed Feb 5, 2009
1 parent 6ebe707 commit 8b7573a
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Showing 4 changed files with 122 additions and 121 deletions.
2 changes: 1 addition & 1 deletion [refs]
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Original file line number Diff line number Diff line change
@@ -1,2 +1,2 @@
---
refs/heads/master: fdbecd9fd14198853bec4cbae8bc7af93f2e3de3
refs/heads/master: c5e954820335ef5aed1662b70aaf5deb9de16735
6 changes: 0 additions & 6 deletions trunk/arch/x86/include/asm/hw_irq.h
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Original file line number Diff line number Diff line change
Expand Up @@ -71,12 +71,6 @@ extern void setup_ioapic_dest(void);
extern void enable_IO_APIC(void);
#endif

/* IPI functions */
#ifdef CONFIG_X86_32
extern void default_send_IPI_self(int vector);
#endif
extern void default_send_IPI(int dest, int vector);

/* Statistics */
extern atomic_t irq_err_count;
extern atomic_t irq_mis_count;
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127 changes: 13 additions & 114 deletions trunk/arch/x86/include/asm/ipi.h
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Expand Up @@ -119,112 +119,22 @@ static inline void
native_apic_mem_write(APIC_ICR, cfg);
}

static inline void
default_send_IPI_mask_sequence_phys(const struct cpumask *mask, int vector)
{
unsigned long query_cpu;
unsigned long flags;

/*
* Hack. The clustered APIC addressing mode doesn't allow us to send
* to an arbitrary mask, so I do a unicast to each CPU instead.
* - mbligh
*/
local_irq_save(flags);
for_each_cpu(query_cpu, mask) {
__default_send_IPI_dest_field(per_cpu(x86_cpu_to_apicid,
query_cpu), vector, APIC_DEST_PHYSICAL);
}
local_irq_restore(flags);
}

static inline void
default_send_IPI_mask_allbutself_phys(const struct cpumask *mask, int vector)
{
unsigned int this_cpu = smp_processor_id();
unsigned int query_cpu;
unsigned long flags;

/* See Hack comment above */

local_irq_save(flags);
for_each_cpu(query_cpu, mask) {
if (query_cpu == this_cpu)
continue;
__default_send_IPI_dest_field(per_cpu(x86_cpu_to_apicid,
query_cpu), vector, APIC_DEST_PHYSICAL);
}
local_irq_restore(flags);
}

extern void default_send_IPI_mask_sequence_phys(const struct cpumask *mask,
int vector);
extern void default_send_IPI_mask_allbutself_phys(const struct cpumask *mask,
int vector);
#include <asm/genapic.h>

static inline void
default_send_IPI_mask_sequence_logical(const struct cpumask *mask, int vector)
{
unsigned long flags;
unsigned int query_cpu;

/*
* Hack. The clustered APIC addressing mode doesn't allow us to send
* to an arbitrary mask, so I do a unicasts to each CPU instead. This
* should be modified to do 1 message per cluster ID - mbligh
*/

local_irq_save(flags);
for_each_cpu(query_cpu, mask)
__default_send_IPI_dest_field(
apic->cpu_to_logical_apicid(query_cpu), vector,
apic->dest_logical);
local_irq_restore(flags);
}

static inline void
default_send_IPI_mask_allbutself_logical(const struct cpumask *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(query_cpu, mask) {
if (query_cpu == this_cpu)
continue;
__default_send_IPI_dest_field(
apic->cpu_to_logical_apicid(query_cpu), vector,
apic->dest_logical);
}
local_irq_restore(flags);
}
extern void default_send_IPI_mask_sequence_logical(const struct cpumask *mask,
int vector);
extern void default_send_IPI_mask_allbutself_logical(const struct cpumask *mask,
int vector);

/* Avoid include hell */
#define NMI_VECTOR 0x02

extern int no_broadcast;

#ifndef CONFIG_X86_64
/*
* This is only used on smaller machines.
*/
static inline void default_send_IPI_mask_bitmask_logical(const struct cpumask *cpumask, int vector)
{
unsigned long mask = cpumask_bits(cpumask)[0];
unsigned long flags;

local_irq_save(flags);
WARN_ON(mask & ~cpumask_bits(cpu_online_mask)[0]);
__default_send_IPI_dest_field(mask, vector, apic->dest_logical);
local_irq_restore(flags);
}

static inline void default_send_IPI_mask_logical(const struct cpumask *mask, int vector)
{
default_send_IPI_mask_bitmask_logical(mask, vector);
}
#endif

static inline void __default_local_send_IPI_allbutself(int vector)
{
if (no_broadcast || vector == NMI_VECTOR)
Expand All @@ -242,22 +152,11 @@ static inline void __default_local_send_IPI_all(int vector)
}

#ifdef CONFIG_X86_32
static inline void default_send_IPI_allbutself(int vector)
{
/*
* if there are no other CPUs in the system then we get an APIC send
* error if we try to broadcast, thus avoid sending IPIs in this case.
*/
if (!(num_online_cpus() > 1))
return;

__default_local_send_IPI_allbutself(vector);
}

static inline void default_send_IPI_all(int vector)
{
__default_local_send_IPI_all(vector);
}
extern void default_send_IPI_mask_logical(const struct cpumask *mask,
int vector);
extern void default_send_IPI_allbutself(int vector);
extern void default_send_IPI_all(int vector);
extern void default_send_IPI_self(int vector);
#endif

#endif
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108 changes: 108 additions & 0 deletions trunk/arch/x86/kernel/ipi.c
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Original file line number Diff line number Diff line change
Expand Up @@ -19,8 +19,116 @@
#include <asm/proto.h>
#include <asm/ipi.h>

void default_send_IPI_mask_sequence_phys(const struct cpumask *mask, int vector)
{
unsigned long query_cpu;
unsigned long flags;

/*
* Hack. The clustered APIC addressing mode doesn't allow us to send
* to an arbitrary mask, so I do a unicast to each CPU instead.
* - mbligh
*/
local_irq_save(flags);
for_each_cpu(query_cpu, mask) {
__default_send_IPI_dest_field(per_cpu(x86_cpu_to_apicid,
query_cpu), vector, APIC_DEST_PHYSICAL);
}
local_irq_restore(flags);
}

void default_send_IPI_mask_allbutself_phys(const struct cpumask *mask,
int vector)
{
unsigned int this_cpu = smp_processor_id();
unsigned int query_cpu;
unsigned long flags;

/* See Hack comment above */

local_irq_save(flags);
for_each_cpu(query_cpu, mask) {
if (query_cpu == this_cpu)
continue;
__default_send_IPI_dest_field(per_cpu(x86_cpu_to_apicid,
query_cpu), vector, APIC_DEST_PHYSICAL);
}
local_irq_restore(flags);
}

void default_send_IPI_mask_sequence_logical(const struct cpumask *mask,
int vector)
{
unsigned long flags;
unsigned int query_cpu;

/*
* Hack. The clustered APIC addressing mode doesn't allow us to send
* to an arbitrary mask, so I do a unicasts to each CPU instead. This
* should be modified to do 1 message per cluster ID - mbligh
*/

local_irq_save(flags);
for_each_cpu(query_cpu, mask)
__default_send_IPI_dest_field(
apic->cpu_to_logical_apicid(query_cpu), vector,
apic->dest_logical);
local_irq_restore(flags);
}

void default_send_IPI_mask_allbutself_logical(const struct cpumask *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(query_cpu, mask) {
if (query_cpu == this_cpu)
continue;
__default_send_IPI_dest_field(
apic->cpu_to_logical_apicid(query_cpu), vector,
apic->dest_logical);
}
local_irq_restore(flags);
}

#ifdef CONFIG_X86_32

/*
* This is only used on smaller machines.
*/
void default_send_IPI_mask_logical(const struct cpumask *cpumask, int vector)
{
unsigned long mask = cpumask_bits(cpumask)[0];
unsigned long flags;

local_irq_save(flags);
WARN_ON(mask & ~cpumask_bits(cpu_online_mask)[0]);
__default_send_IPI_dest_field(mask, vector, apic->dest_logical);
local_irq_restore(flags);
}

void default_send_IPI_allbutself(int vector)
{
/*
* if there are no other CPUs in the system then we get an APIC send
* error if we try to broadcast, thus avoid sending IPIs in this case.
*/
if (!(num_online_cpus() > 1))
return;

__default_local_send_IPI_allbutself(vector);
}

void default_send_IPI_all(int vector)
{
__default_local_send_IPI_all(vector);
}

void default_send_IPI_self(int vector)
{
__default_send_IPI_shortcut(APIC_DEST_SELF, vector, apic->dest_logical);
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