[PATCH 059/114] x86, apic: untangle the send_IPI_*() jungle

From: Ingo Molnar
Date: Wed Jan 28 2009 - 19:07:45 EST

Our send_IPI_*() methods and definitions are a twisted mess: the same
symbol is defined to different things depending on .config details,
in a non-transparent way.

- spread out the quirks into separately named per apic driver methods

- prefix the standard PC methods with default_

- get rid of wrapper macro obfuscation

- clean up various details

Signed-off-by: Ingo Molnar <mingo@xxxxxxx>
---
arch/x86/include/asm/bigsmp/ipi.h | 44 +++++-----
arch/x86/include/asm/es7000/ipi.h | 44 +++++-----
arch/x86/include/asm/hw_irq.h | 4 +-
arch/x86/include/asm/ipi.h | 38 ++++----
arch/x86/include/asm/mach-default/mach_apic.h | 1 -
arch/x86/include/asm/mach-default/mach_ipi.h | 122 ++++++++++++-------------
arch/x86/include/asm/mach-generic/mach_ipi.h | 4 -
arch/x86/include/asm/numaq/ipi.h | 44 +++++-----
arch/x86/include/asm/summit/ipi.h | 52 +++++-----
arch/x86/kernel/apic.c | 2 +-
arch/x86/kernel/genapic_64.c | 2 +-
arch/x86/kernel/genapic_flat_64.c | 24 +++--
arch/x86/kernel/genx2apic_cluster.c | 38 ++++----
arch/x86/kernel/genx2apic_phys.c | 36 +++----
arch/x86/kernel/genx2apic_uv_x.c | 21 +++--
arch/x86/kernel/io_apic.c | 10 +-
arch/x86/kernel/ipi.c | 28 +++---
arch/x86/kernel/kgdb.c | 2 +-
arch/x86/kernel/reboot.c | 2 +-
arch/x86/kernel/smp.c | 10 +-
arch/x86/mach-generic/bigsmp.c | 6 +-
arch/x86/mach-generic/default.c | 6 +-
arch/x86/mach-generic/es7000.c | 6 +-
arch/x86/mach-generic/numaq.c | 6 +-
arch/x86/mach-generic/summit.c | 6 +-
arch/x86/mm/tlb.c | 2 +-
26 files changed, 279 insertions(+), 281 deletions(-)
rewrite arch/x86/include/asm/bigsmp/ipi.h (81%)
rewrite arch/x86/include/asm/es7000/ipi.h (81%)
rewrite arch/x86/include/asm/mach-default/mach_ipi.h (65%)
rewrite arch/x86/include/asm/numaq/ipi.h (81%)
rewrite arch/x86/include/asm/summit/ipi.h (66%)

diff --git a/arch/x86/include/asm/bigsmp/ipi.h b/arch/x86/include/asm/bigsmp/ipi.h
dissimilarity index 81%
index 27fcd01..a91db69 100644
--- a/arch/x86/include/asm/bigsmp/ipi.h
+++ b/arch/x86/include/asm/bigsmp/ipi.h
@@ -1,22 +1,22 @@
-#ifndef __ASM_MACH_IPI_H
-#define __ASM_MACH_IPI_H
-
-void send_IPI_mask_sequence(const struct cpumask *mask, int vector);
-void send_IPI_mask_allbutself(const struct cpumask *mask, int vector);
-
-static inline void send_IPI_mask(const struct cpumask *mask, int vector)
-{
- send_IPI_mask_sequence(mask, vector);
-}
-
-static inline void send_IPI_allbutself(int vector)
-{
- send_IPI_mask_allbutself(cpu_online_mask, vector);
-}
-
-static inline void send_IPI_all(int vector)
-{
- send_IPI_mask(cpu_online_mask, vector);
-}
-
-#endif /* __ASM_MACH_IPI_H */
+#ifndef __ASM_MACH_IPI_H
+#define __ASM_MACH_IPI_H
+
+void default_send_IPI_mask_sequence(const struct cpumask *mask, int vector);
+void default_send_IPI_mask_allbutself(const struct cpumask *mask, int vector);
+
+static inline void default_send_IPI_mask(const struct cpumask *mask, int vector)
+{
+ default_send_IPI_mask_sequence(mask, vector);
+}
+
+static inline void bigsmp_send_IPI_allbutself(int vector)
+{
+ default_send_IPI_mask_allbutself(cpu_online_mask, vector);
+}
+
+static inline void bigsmp_send_IPI_all(int vector)
+{
+ default_send_IPI_mask(cpu_online_mask, vector);
+}
+
+#endif /* __ASM_MACH_IPI_H */
diff --git a/arch/x86/include/asm/es7000/ipi.h b/arch/x86/include/asm/es7000/ipi.h
dissimilarity index 81%
index 7e8ed24..81e77c8 100644
--- a/arch/x86/include/asm/es7000/ipi.h
+++ b/arch/x86/include/asm/es7000/ipi.h
@@ -1,22 +1,22 @@
-#ifndef __ASM_ES7000_IPI_H
-#define __ASM_ES7000_IPI_H
-
-void send_IPI_mask_sequence(const struct cpumask *mask, int vector);
-void send_IPI_mask_allbutself(const struct cpumask *mask, int vector);
-
-static inline void send_IPI_mask(const struct cpumask *mask, int vector)
-{
- send_IPI_mask_sequence(mask, vector);
-}
-
-static inline void send_IPI_allbutself(int vector)
-{
- send_IPI_mask_allbutself(cpu_online_mask, vector);
-}
-
-static inline void send_IPI_all(int vector)
-{
- send_IPI_mask(cpu_online_mask, vector);
-}
-
-#endif /* __ASM_ES7000_IPI_H */
+#ifndef __ASM_ES7000_IPI_H
+#define __ASM_ES7000_IPI_H
+
+void default_send_IPI_mask_sequence(const struct cpumask *mask, int vector);
+void default_send_IPI_mask_allbutself(const struct cpumask *mask, int vector);
+
+static inline void es7000_send_IPI_mask(const struct cpumask *mask, int vector)
+{
+ default_send_IPI_mask_sequence(mask, vector);
+}
+
+static inline void es7000_send_IPI_allbutself(int vector)
+{
+ default_send_IPI_mask_allbutself(cpu_online_mask, vector);
+}
+
+static inline void es7000_send_IPI_all(int vector)
+{
+ es7000_send_IPI_mask(cpu_online_mask, vector);
+}
+
+#endif /* __ASM_ES7000_IPI_H */
diff --git a/arch/x86/include/asm/hw_irq.h b/arch/x86/include/asm/hw_irq.h
index 8de644b..bfa921f 100644
--- a/arch/x86/include/asm/hw_irq.h
+++ b/arch/x86/include/asm/hw_irq.h
@@ -73,9 +73,9 @@ extern void enable_IO_APIC(void);

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

/* Statistics */
extern atomic_t irq_err_count;
diff --git a/arch/x86/include/asm/ipi.h b/arch/x86/include/asm/ipi.h
index c745a30..a8d717f 100644
--- a/arch/x86/include/asm/ipi.h
+++ b/arch/x86/include/asm/ipi.h
@@ -55,8 +55,9 @@ static inline void __xapic_wait_icr_idle(void)
cpu_relax();
}

-static inline void __send_IPI_shortcut(unsigned int shortcut, int vector,
- unsigned int dest)
+static inline void
+__default_send_IPI_shortcut(unsigned int shortcut,
+ int vector, unsigned int dest)
{
/*
* Subtle. In the case of the 'never do double writes' workaround
@@ -87,8 +88,8 @@ static inline void __send_IPI_shortcut(unsigned int shortcut, int vector,
* This is used to send an IPI with no shorthand notation (the destination is
* specified in bits 56 to 63 of the ICR).
*/
-static inline void __send_IPI_dest_field(unsigned int mask, int vector,
- unsigned int dest)
+static inline void
+ __default_send_IPI_dest_field(unsigned int mask, int vector, unsigned int dest)
{
unsigned long cfg;

@@ -117,11 +118,11 @@ static inline void __send_IPI_dest_field(unsigned int mask, int vector,
native_apic_mem_write(APIC_ICR, cfg);
}

-static inline void send_IPI_mask_sequence(const struct cpumask *mask,
- int vector)
+static inline void
+default_send_IPI_mask_sequence(const struct cpumask *mask, int vector)
{
- unsigned long flags;
unsigned long query_cpu;
+ unsigned long flags;

/*
* Hack. The clustered APIC addressing mode doesn't allow us to send
@@ -130,27 +131,28 @@ static inline void send_IPI_mask_sequence(const struct cpumask *mask,
*/
local_irq_save(flags);
for_each_cpu(query_cpu, mask) {
- __send_IPI_dest_field(per_cpu(x86_cpu_to_apicid, query_cpu),
- vector, APIC_DEST_PHYSICAL);
+ __default_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 struct cpumask *mask,
- int vector)
+static inline void
+default_send_IPI_mask_allbutself(const struct cpumask *mask, int vector)
{
- unsigned long flags;
- unsigned int query_cpu;
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)
- __send_IPI_dest_field(
- per_cpu(x86_cpu_to_apicid, query_cpu),
- vector, APIC_DEST_PHYSICAL);
+ 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);
}

diff --git a/arch/x86/include/asm/mach-default/mach_apic.h b/arch/x86/include/asm/mach-default/mach_apic.h
index 8972f84..2e4104c 100644
--- a/arch/x86/include/asm/mach-default/mach_apic.h
+++ b/arch/x86/include/asm/mach-default/mach_apic.h
@@ -20,7 +20,6 @@ static inline const struct cpumask *default_target_cpus(void)
#ifdef CONFIG_X86_64
#include <asm/genapic.h>
#define read_apic_id() (apic->get_apic_id(apic_read(APIC_ID)))
-#define send_IPI_self (apic->send_IPI_self)
#define wakeup_secondary_cpu (apic->wakeup_cpu)
extern void default_setup_apic_routing(void);
#else
diff --git a/arch/x86/include/asm/mach-default/mach_ipi.h b/arch/x86/include/asm/mach-default/mach_ipi.h
dissimilarity index 65%
index 0893996..85dec63 100644
--- a/arch/x86/include/asm/mach-default/mach_ipi.h
+++ b/arch/x86/include/asm/mach-default/mach_ipi.h
@@ -1,64 +1,58 @@
-#ifndef _ASM_X86_MACH_DEFAULT_MACH_IPI_H
-#define _ASM_X86_MACH_DEFAULT_MACH_IPI_H
-
-/* Avoid include hell */
-#define NMI_VECTOR 0x02
-
-void send_IPI_mask_bitmask(const struct cpumask *mask, int vector);
-void send_IPI_mask_allbutself(const struct cpumask *mask, int vector);
-void __send_IPI_shortcut(unsigned int shortcut, int vector);
-
-extern int no_broadcast;
-
-#ifdef CONFIG_X86_64
-#include <asm/genapic.h>
-#define send_IPI_mask (apic->send_IPI_mask)
-#define send_IPI_mask_allbutself (apic->send_IPI_mask_allbutself)
-#else
-static inline void send_IPI_mask(const struct cpumask *mask, int vector)
-{
- send_IPI_mask_bitmask(mask, vector);
-}
-void send_IPI_mask_allbutself(const struct cpumask *mask, int vector);
-#endif
-
-static inline void __local_send_IPI_allbutself(int vector)
-{
- if (no_broadcast || vector == NMI_VECTOR)
- send_IPI_mask_allbutself(cpu_online_mask, 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_mask, vector);
- else
- __send_IPI_shortcut(APIC_DEST_ALLINC, vector);
-}
-
-#ifdef CONFIG_X86_64
-#define send_IPI_allbutself (apic->send_IPI_allbutself)
-#define send_IPI_all (apic->send_IPI_all)
-#else
-static inline void 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;
-
- __local_send_IPI_allbutself(vector);
- return;
-}
-
-static inline void send_IPI_all(int vector)
-{
- __local_send_IPI_all(vector);
-}
-#endif
-
-#endif /* _ASM_X86_MACH_DEFAULT_MACH_IPI_H */
+#ifndef _ASM_X86_MACH_DEFAULT_MACH_IPI_H
+#define _ASM_X86_MACH_DEFAULT_MACH_IPI_H
+
+/* Avoid include hell */
+#define NMI_VECTOR 0x02
+
+void default_send_IPI_mask_bitmask(const struct cpumask *mask, int vector);
+void default_send_IPI_mask_allbutself(const struct cpumask *mask, int vector);
+void __default_send_IPI_shortcut(unsigned int shortcut, int vector);
+
+extern int no_broadcast;
+
+#ifdef CONFIG_X86_64
+#include <asm/genapic.h>
+#else
+static inline void default_send_IPI_mask(const struct cpumask *mask, int vector)
+{
+ default_send_IPI_mask_bitmask(mask, vector);
+}
+void default_send_IPI_mask_allbutself(const struct cpumask *mask, int vector);
+#endif
+
+static inline void __default_local_send_IPI_allbutself(int vector)
+{
+ if (no_broadcast || vector == NMI_VECTOR)
+ apic->send_IPI_mask_allbutself(cpu_online_mask, vector);
+ else
+ __default_send_IPI_shortcut(APIC_DEST_ALLBUT, vector);
+}
+
+static inline void __default_local_send_IPI_all(int vector)
+{
+ if (no_broadcast || vector == NMI_VECTOR)
+ apic->send_IPI_mask(cpu_online_mask, vector);
+ else
+ __default_send_IPI_shortcut(APIC_DEST_ALLINC, 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);
+}
+#endif
+
+#endif /* _ASM_X86_MACH_DEFAULT_MACH_IPI_H */
diff --git a/arch/x86/include/asm/mach-generic/mach_ipi.h b/arch/x86/include/asm/mach-generic/mach_ipi.h
index 75e54bd..5691c09 100644
--- a/arch/x86/include/asm/mach-generic/mach_ipi.h
+++ b/arch/x86/include/asm/mach-generic/mach_ipi.h
@@ -3,8 +3,4 @@

#include <asm/genapic.h>

-#define send_IPI_mask (apic->send_IPI_mask)
-#define send_IPI_allbutself (apic->send_IPI_allbutself)
-#define send_IPI_all (apic->send_IPI_all)
-
#endif /* _ASM_X86_MACH_GENERIC_MACH_IPI_H */
diff --git a/arch/x86/include/asm/numaq/ipi.h b/arch/x86/include/asm/numaq/ipi.h
dissimilarity index 81%
index a8374c6..5dbc4b4 100644
--- a/arch/x86/include/asm/numaq/ipi.h
+++ b/arch/x86/include/asm/numaq/ipi.h
@@ -1,22 +1,22 @@
-#ifndef __ASM_NUMAQ_IPI_H
-#define __ASM_NUMAQ_IPI_H
-
-void send_IPI_mask_sequence(const struct cpumask *mask, int vector);
-void send_IPI_mask_allbutself(const struct cpumask *mask, int vector);
-
-static inline void send_IPI_mask(const struct cpumask *mask, int vector)
-{
- send_IPI_mask_sequence(mask, vector);
-}
-
-static inline void send_IPI_allbutself(int vector)
-{
- send_IPI_mask_allbutself(cpu_online_mask, vector);
-}
-
-static inline void send_IPI_all(int vector)
-{
- send_IPI_mask(cpu_online_mask, vector);
-}
-
-#endif /* __ASM_NUMAQ_IPI_H */
+#ifndef __ASM_NUMAQ_IPI_H
+#define __ASM_NUMAQ_IPI_H
+
+void default_send_IPI_mask_sequence(const struct cpumask *mask, int vector);
+void default_send_IPI_mask_allbutself(const struct cpumask *mask, int vector);
+
+static inline void numaq_send_IPI_mask(const struct cpumask *mask, int vector)
+{
+ default_send_IPI_mask_sequence(mask, vector);
+}
+
+static inline void numaq_send_IPI_allbutself(int vector)
+{
+ default_send_IPI_mask_allbutself(cpu_online_mask, vector);
+}
+
+static inline void numaq_send_IPI_all(int vector)
+{
+ numaq_send_IPI_mask(cpu_online_mask, vector);
+}
+
+#endif /* __ASM_NUMAQ_IPI_H */
diff --git a/arch/x86/include/asm/summit/ipi.h b/arch/x86/include/asm/summit/ipi.h
dissimilarity index 66%
index a8a2c24..f87a43f 100644
--- a/arch/x86/include/asm/summit/ipi.h
+++ b/arch/x86/include/asm/summit/ipi.h
@@ -1,26 +1,26 @@
-#ifndef __ASM_SUMMIT_IPI_H
-#define __ASM_SUMMIT_IPI_H
-
-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(const cpumask_t *mask, int vector)
-{
- send_IPI_mask_sequence(mask, vector);
-}
-
-static inline void send_IPI_allbutself(int vector)
-{
- cpumask_t mask = cpu_online_map;
- cpu_clear(smp_processor_id(), mask);
-
- if (!cpus_empty(mask))
- send_IPI_mask(&mask, vector);
-}
-
-static inline void send_IPI_all(int vector)
-{
- send_IPI_mask(&cpu_online_map, vector);
-}
-
-#endif /* __ASM_SUMMIT_IPI_H */
+#ifndef __ASM_SUMMIT_IPI_H
+#define __ASM_SUMMIT_IPI_H
+
+void default_send_IPI_mask_sequence(const cpumask_t *mask, int vector);
+void default_send_IPI_mask_allbutself(const cpumask_t *mask, int vector);
+
+static inline void summit_send_IPI_mask(const cpumask_t *mask, int vector)
+{
+ default_send_IPI_mask_sequence(mask, vector);
+}
+
+static inline void summit_send_IPI_allbutself(int vector)
+{
+ cpumask_t mask = cpu_online_map;
+ cpu_clear(smp_processor_id(), mask);
+
+ if (!cpus_empty(mask))
+ summit_send_IPI_mask(&mask, vector);
+}
+
+static inline void summit_send_IPI_all(int vector)
+{
+ summit_send_IPI_mask(&cpu_online_map, vector);
+}
+
+#endif /* __ASM_SUMMIT_IPI_H */
diff --git a/arch/x86/kernel/apic.c b/arch/x86/kernel/apic.c
index 5f7f3a9..84b8e7c 100644
--- a/arch/x86/kernel/apic.c
+++ b/arch/x86/kernel/apic.c
@@ -475,7 +475,7 @@ static void lapic_timer_setup(enum clock_event_mode mode,
static void lapic_timer_broadcast(const struct cpumask *mask)
{
#ifdef CONFIG_SMP
- send_IPI_mask(mask, LOCAL_TIMER_VECTOR);
+ apic->send_IPI_mask(mask, LOCAL_TIMER_VECTOR);
#endif
}

diff --git a/arch/x86/kernel/genapic_64.c b/arch/x86/kernel/genapic_64.c
index d57d213..820dea5 100644
--- a/arch/x86/kernel/genapic_64.c
+++ b/arch/x86/kernel/genapic_64.c
@@ -65,7 +65,7 @@ void __init default_setup_apic_routing(void)

void apic_send_IPI_self(int vector)
{
- __send_IPI_shortcut(APIC_DEST_SELF, vector, APIC_DEST_PHYSICAL);
+ __default_send_IPI_shortcut(APIC_DEST_SELF, vector, APIC_DEST_PHYSICAL);
}

int __init default_acpi_madt_oem_check(char *oem_id, char *oem_table_id)
diff --git a/arch/x86/kernel/genapic_flat_64.c b/arch/x86/kernel/genapic_flat_64.c
index b941b11..7c648cc 100644
--- a/arch/x86/kernel/genapic_flat_64.c
+++ b/arch/x86/kernel/genapic_flat_64.c
@@ -74,7 +74,7 @@ static inline void _flat_send_IPI_mask(unsigned long mask, int vector)
unsigned long flags;

local_irq_save(flags);
- __send_IPI_dest_field(mask, vector, apic->dest_logical);
+ __default_send_IPI_dest_field(mask, vector, apic->dest_logical);
local_irq_restore(flags);
}

@@ -85,14 +85,15 @@ static void flat_send_IPI_mask(const struct cpumask *cpumask, int vector)
_flat_send_IPI_mask(mask, vector);
}

-static void flat_send_IPI_mask_allbutself(const struct cpumask *cpumask,
- int vector)
+static void
+ flat_send_IPI_mask_allbutself(const struct cpumask *cpumask, int vector)
{
unsigned long mask = cpumask_bits(cpumask)[0];
int cpu = smp_processor_id();

if (cpu < BITS_PER_LONG)
clear_bit(cpu, &mask);
+
_flat_send_IPI_mask(mask, vector);
}

@@ -114,16 +115,19 @@ static void flat_send_IPI_allbutself(int vector)
_flat_send_IPI_mask(mask, vector);
}
} else if (num_online_cpus() > 1) {
- __send_IPI_shortcut(APIC_DEST_ALLBUT, vector, apic->dest_logical);
+ __default_send_IPI_shortcut(APIC_DEST_ALLBUT,
+ vector, apic->dest_logical);
}
}

static void flat_send_IPI_all(int vector)
{
- if (vector == NMI_VECTOR)
+ if (vector == NMI_VECTOR) {
flat_send_IPI_mask(cpu_online_mask, vector);
- else
- __send_IPI_shortcut(APIC_DEST_ALLINC, vector, apic->dest_logical);
+ } else {
+ __default_send_IPI_shortcut(APIC_DEST_ALLINC,
+ vector, apic->dest_logical);
+ }
}

static unsigned int flat_get_apic_id(unsigned long x)
@@ -265,18 +269,18 @@ static void physflat_vector_allocation_domain(int cpu, struct cpumask *retmask)

static void physflat_send_IPI_mask(const struct cpumask *cpumask, int vector)
{
- send_IPI_mask_sequence(cpumask, vector);
+ default_send_IPI_mask_sequence(cpumask, vector);
}

static void physflat_send_IPI_mask_allbutself(const struct cpumask *cpumask,
int vector)
{
- send_IPI_mask_allbutself(cpumask, vector);
+ default_send_IPI_mask_allbutself(cpumask, vector);
}

static void physflat_send_IPI_allbutself(int vector)
{
- send_IPI_mask_allbutself(cpu_online_mask, vector);
+ default_send_IPI_mask_allbutself(cpu_online_mask, vector);
}

static void physflat_send_IPI_all(int vector)
diff --git a/arch/x86/kernel/genx2apic_cluster.c b/arch/x86/kernel/genx2apic_cluster.c
index 62f9fcc..2d97726 100644
--- a/arch/x86/kernel/genx2apic_cluster.c
+++ b/arch/x86/kernel/genx2apic_cluster.c
@@ -36,8 +36,8 @@ static void x2apic_vector_allocation_domain(int cpu, struct cpumask *retmask)
cpumask_set_cpu(cpu, retmask);
}

-static void __x2apic_send_IPI_dest(unsigned int apicid, int vector,
- unsigned int dest)
+static void
+ __x2apic_send_IPI_dest(unsigned int apicid, int vector, unsigned int dest)
{
unsigned long cfg;

@@ -57,45 +57,50 @@ static void __x2apic_send_IPI_dest(unsigned int apicid, int vector,
*/
static void x2apic_send_IPI_mask(const struct cpumask *mask, int vector)
{
- unsigned long flags;
unsigned long query_cpu;
+ unsigned long flags;

local_irq_save(flags);
- for_each_cpu(query_cpu, mask)
+ for_each_cpu(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_mask_allbutself(const struct cpumask *mask,
- int vector)
+static void
+ x2apic_send_IPI_mask_allbutself(const struct cpumask *mask, int vector)
{
- unsigned long flags;
- unsigned long query_cpu;
unsigned long this_cpu = smp_processor_id();
+ unsigned long query_cpu;
+ unsigned long flags;

local_irq_save(flags);
- for_each_cpu(query_cpu, mask)
- if (query_cpu != this_cpu)
- __x2apic_send_IPI_dest(
+ for_each_cpu(query_cpu, mask) {
+ if (query_cpu == this_cpu)
+ continue;
+ __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)
{
- unsigned long flags;
- unsigned long query_cpu;
unsigned long this_cpu = smp_processor_id();
+ unsigned long query_cpu;
+ unsigned long flags;

local_irq_save(flags);
- for_each_online_cpu(query_cpu)
- if (query_cpu != this_cpu)
- __x2apic_send_IPI_dest(
+ for_each_online_cpu(query_cpu) {
+ if (query_cpu == this_cpu)
+ continue;
+ __x2apic_send_IPI_dest(
per_cpu(x86_cpu_to_logical_apicid, query_cpu),
vector, apic->dest_logical);
+ }
local_irq_restore(flags);
}

@@ -175,7 +180,6 @@ static void init_x2apic_ldr(void)
int cpu = smp_processor_id();

per_cpu(x86_cpu_to_logical_apicid, cpu) = apic_read(APIC_LDR);
- return;
}

struct genapic apic_x2apic_cluster = {
diff --git a/arch/x86/kernel/genx2apic_phys.c b/arch/x86/kernel/genx2apic_phys.c
index 3da1675..74777c2 100644
--- a/arch/x86/kernel/genx2apic_phys.c
+++ b/arch/x86/kernel/genx2apic_phys.c
@@ -55,8 +55,8 @@ static void __x2apic_send_IPI_dest(unsigned int apicid, int vector,

static void x2apic_send_IPI_mask(const struct cpumask *mask, int vector)
{
- unsigned long flags;
unsigned long query_cpu;
+ unsigned long flags;

local_irq_save(flags);
for_each_cpu(query_cpu, mask) {
@@ -66,12 +66,12 @@ static void x2apic_send_IPI_mask(const struct cpumask *mask, int vector)
local_irq_restore(flags);
}

-static void x2apic_send_IPI_mask_allbutself(const struct cpumask *mask,
- int vector)
+static void
+ x2apic_send_IPI_mask_allbutself(const struct cpumask *mask, int vector)
{
- unsigned long flags;
- unsigned long query_cpu;
unsigned long this_cpu = smp_processor_id();
+ unsigned long query_cpu;
+ unsigned long flags;

local_irq_save(flags);
for_each_cpu(query_cpu, mask) {
@@ -85,16 +85,17 @@ static void x2apic_send_IPI_mask_allbutself(const struct cpumask *mask,

static void x2apic_send_IPI_allbutself(int vector)
{
- unsigned long flags;
- unsigned long query_cpu;
unsigned long this_cpu = smp_processor_id();
+ unsigned long query_cpu;
+ unsigned long flags;

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);
+ for_each_online_cpu(query_cpu) {
+ if (query_cpu == this_cpu)
+ continue;
+ __x2apic_send_IPI_dest(per_cpu(x86_cpu_to_apicid, query_cpu),
+ vector, APIC_DEST_PHYSICAL);
+ }
local_irq_restore(flags);
}

@@ -145,18 +146,12 @@ x2apic_cpu_mask_to_apicid_and(const struct cpumask *cpumask,

static unsigned int x2apic_phys_get_apic_id(unsigned long x)
{
- unsigned int id;
-
- id = x;
- return id;
+ return x;
}

static unsigned long set_apic_id(unsigned int id)
{
- unsigned long x;
-
- x = id;
- return x;
+ return id;
}

static int x2apic_phys_pkg_id(int initial_apicid, int index_msb)
@@ -171,7 +166,6 @@ static void x2apic_send_IPI_self(int vector)

static void init_x2apic_ldr(void)
{
- return;
}

struct genapic apic_x2apic_phys = {
diff --git a/arch/x86/kernel/genx2apic_uv_x.c b/arch/x86/kernel/genx2apic_uv_x.c
index f957878..24b9f42 100644
--- a/arch/x86/kernel/genx2apic_uv_x.c
+++ b/arch/x86/kernel/genx2apic_uv_x.c
@@ -118,12 +118,13 @@ static void uv_send_IPI_one(int cpu, int vector)
int pnode;

apicid = per_cpu(x86_cpu_to_apicid, cpu);
- lapicid = apicid & 0x3f; /* ZZZ macro needed */
+ lapicid = apicid & 0x3f; /* ZZZ macro needed */
pnode = uv_apicid_to_pnode(apicid);
- val =
- (1UL << UVH_IPI_INT_SEND_SHFT) | (lapicid <<
- UVH_IPI_INT_APIC_ID_SHFT) |
- (vector << UVH_IPI_INT_VECTOR_SHFT);
+
+ val = ( 1UL << UVH_IPI_INT_SEND_SHFT ) |
+ ( lapicid << UVH_IPI_INT_APIC_ID_SHFT ) |
+ ( vector << UVH_IPI_INT_VECTOR_SHFT );
+
uv_write_global_mmr64(pnode, UVH_IPI_INT, val);
}

@@ -137,22 +138,24 @@ static void uv_send_IPI_mask(const struct cpumask *mask, int vector)

static void uv_send_IPI_mask_allbutself(const struct cpumask *mask, int vector)
{
- unsigned int cpu;
unsigned int this_cpu = smp_processor_id();
+ unsigned int cpu;

- for_each_cpu(cpu, mask)
+ for_each_cpu(cpu, mask) {
if (cpu != this_cpu)
uv_send_IPI_one(cpu, vector);
+ }
}

static void uv_send_IPI_allbutself(int vector)
{
- unsigned int cpu;
unsigned int this_cpu = smp_processor_id();
+ unsigned int cpu;

- for_each_online_cpu(cpu)
+ for_each_online_cpu(cpu) {
if (cpu != this_cpu)
uv_send_IPI_one(cpu, vector);
+ }
}

static void uv_send_IPI_all(int vector)
diff --git a/arch/x86/kernel/io_apic.c b/arch/x86/kernel/io_apic.c
index 01a2505..e90970c 100644
--- a/arch/x86/kernel/io_apic.c
+++ b/arch/x86/kernel/io_apic.c
@@ -514,11 +514,11 @@ static void send_cleanup_vector(struct irq_cfg *cfg)
for_each_cpu_and(i, cfg->old_domain, cpu_online_mask)
cfg->move_cleanup_count++;
for_each_cpu_and(i, cfg->old_domain, cpu_online_mask)
- send_IPI_mask(cpumask_of(i), IRQ_MOVE_CLEANUP_VECTOR);
+ apic->send_IPI_mask(cpumask_of(i), IRQ_MOVE_CLEANUP_VECTOR);
} else {
cpumask_and(cleanup_mask, cfg->old_domain, cpu_online_mask);
cfg->move_cleanup_count = cpumask_weight(cleanup_mask);
- send_IPI_mask(cleanup_mask, IRQ_MOVE_CLEANUP_VECTOR);
+ apic->send_IPI_mask(cleanup_mask, IRQ_MOVE_CLEANUP_VECTOR);
free_cpumask_var(cleanup_mask);
}
cfg->move_in_progress = 0;
@@ -800,7 +800,7 @@ static void clear_IO_APIC (void)
}

#if !defined(CONFIG_SMP) && defined(CONFIG_X86_32)
-void send_IPI_self(int vector)
+void default_send_IPI_self(int vector)
{
unsigned int cfg;

@@ -2297,7 +2297,7 @@ static int ioapic_retrigger_irq(unsigned int irq)
unsigned long flags;

spin_lock_irqsave(&vector_lock, flags);
- send_IPI_mask(cpumask_of(cpumask_first(cfg->domain)), cfg->vector);
+ apic->send_IPI_mask(cpumask_of(cpumask_first(cfg->domain)), cfg->vector);
spin_unlock_irqrestore(&vector_lock, flags);

return 1;
@@ -2305,7 +2305,7 @@ static int ioapic_retrigger_irq(unsigned int irq)
#else
static int ioapic_retrigger_irq(unsigned int irq)
{
- send_IPI_self(irq_cfg(irq)->vector);
+ apic->send_IPI_self(irq_cfg(irq)->vector);

return 1;
}
diff --git a/arch/x86/kernel/ipi.c b/arch/x86/kernel/ipi.c
index 367c5e6..e16c41b 100644
--- a/arch/x86/kernel/ipi.c
+++ b/arch/x86/kernel/ipi.c
@@ -48,7 +48,7 @@ static inline int __prepare_ICR2(unsigned int mask)
return SET_APIC_DEST_FIELD(mask);
}

-void __send_IPI_shortcut(unsigned int shortcut, int vector)
+void __default_send_IPI_shortcut(unsigned int shortcut, int vector)
{
/*
* Subtle. In the case of the 'never do double writes' workaround
@@ -75,16 +75,16 @@ void __send_IPI_shortcut(unsigned int shortcut, int vector)
apic_write(APIC_ICR, cfg);
}

-void send_IPI_self(int vector)
+void default_send_IPI_self(int vector)
{
- __send_IPI_shortcut(APIC_DEST_SELF, vector);
+ __default_send_IPI_shortcut(APIC_DEST_SELF, vector);
}

/*
* This is used to send an IPI with no shorthand notation (the destination is
* specified in bits 56 to 63 of the ICR).
*/
-static inline void __send_IPI_dest_field(unsigned long mask, int vector)
+static inline void __default_send_IPI_dest_field(unsigned long mask, int vector)
{
unsigned long cfg;

@@ -116,18 +116,18 @@ static inline void __send_IPI_dest_field(unsigned long mask, int vector)
/*
* This is only used on smaller machines.
*/
-void send_IPI_mask_bitmask(const struct cpumask *cpumask, int vector)
+void default_send_IPI_mask_bitmask(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]);
- __send_IPI_dest_field(mask, vector);
+ __default_send_IPI_dest_field(mask, vector);
local_irq_restore(flags);
}

-void send_IPI_mask_sequence(const struct cpumask *mask, int vector)
+void default_send_IPI_mask_sequence(const struct cpumask *mask, int vector)
{
unsigned long flags;
unsigned int query_cpu;
@@ -140,11 +140,11 @@ void send_IPI_mask_sequence(const struct cpumask *mask, int vector)

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

-void send_IPI_mask_allbutself(const struct cpumask *mask, int vector)
+void default_send_IPI_mask_allbutself(const struct cpumask *mask, int vector)
{
unsigned long flags;
unsigned int query_cpu;
@@ -153,10 +153,12 @@ void send_IPI_mask_allbutself(const struct cpumask *mask, int vector)
/* See Hack comment above */

local_irq_save(flags);
- for_each_cpu(query_cpu, mask)
- if (query_cpu != this_cpu)
- __send_IPI_dest_field(apic->cpu_to_logical_apicid(query_cpu),
- vector);
+ 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);
+ }
local_irq_restore(flags);
}

diff --git a/arch/x86/kernel/kgdb.c b/arch/x86/kernel/kgdb.c
index 10435a1..b62a381 100644
--- a/arch/x86/kernel/kgdb.c
+++ b/arch/x86/kernel/kgdb.c
@@ -347,7 +347,7 @@ void kgdb_post_primary_code(struct pt_regs *regs, int e_vector, int err_code)
*/
void kgdb_roundup_cpus(unsigned long flags)
{
- send_IPI_allbutself(APIC_DM_NMI);
+ apic->send_IPI_allbutself(APIC_DM_NMI);
}
#endif

diff --git a/arch/x86/kernel/reboot.c b/arch/x86/kernel/reboot.c
index f8536fe..38dace2 100644
--- a/arch/x86/kernel/reboot.c
+++ b/arch/x86/kernel/reboot.c
@@ -651,7 +651,7 @@ static int crash_nmi_callback(struct notifier_block *self,

static void smp_send_nmi_allbutself(void)
{
- send_IPI_allbutself(NMI_VECTOR);
+ apic->send_IPI_allbutself(NMI_VECTOR);
}

static struct notifier_block crash_nmi_nb = {
diff --git a/arch/x86/kernel/smp.c b/arch/x86/kernel/smp.c
index e6faa33..c48ba6c 100644
--- a/arch/x86/kernel/smp.c
+++ b/arch/x86/kernel/smp.c
@@ -118,12 +118,12 @@ static void native_smp_send_reschedule(int cpu)
WARN_ON(1);
return;
}
- send_IPI_mask(cpumask_of(cpu), RESCHEDULE_VECTOR);
+ apic->send_IPI_mask(cpumask_of(cpu), RESCHEDULE_VECTOR);
}

void native_send_call_func_single_ipi(int cpu)
{
- send_IPI_mask(cpumask_of(cpu), CALL_FUNCTION_SINGLE_VECTOR);
+ apic->send_IPI_mask(cpumask_of(cpu), CALL_FUNCTION_SINGLE_VECTOR);
}

void native_send_call_func_ipi(const struct cpumask *mask)
@@ -131,7 +131,7 @@ void native_send_call_func_ipi(const struct cpumask *mask)
cpumask_var_t allbutself;

if (!alloc_cpumask_var(&allbutself, GFP_ATOMIC)) {
- send_IPI_mask(mask, CALL_FUNCTION_VECTOR);
+ apic->send_IPI_mask(mask, CALL_FUNCTION_VECTOR);
return;
}

@@ -140,9 +140,9 @@ void native_send_call_func_ipi(const struct cpumask *mask)

if (cpumask_equal(mask, allbutself) &&
cpumask_equal(cpu_online_mask, cpu_callout_mask))
- send_IPI_allbutself(CALL_FUNCTION_VECTOR);
+ apic->send_IPI_allbutself(CALL_FUNCTION_VECTOR);
else
- send_IPI_mask(mask, CALL_FUNCTION_VECTOR);
+ apic->send_IPI_mask(mask, CALL_FUNCTION_VECTOR);

free_cpumask_var(allbutself);
}
diff --git a/arch/x86/mach-generic/bigsmp.c b/arch/x86/mach-generic/bigsmp.c
index 22c2c7b..4782b55 100644
--- a/arch/x86/mach-generic/bigsmp.c
+++ b/arch/x86/mach-generic/bigsmp.c
@@ -97,10 +97,10 @@ struct genapic apic_bigsmp = {
.cpu_mask_to_apicid = bigsmp_cpu_mask_to_apicid,
.cpu_mask_to_apicid_and = bigsmp_cpu_mask_to_apicid_and,

- .send_IPI_mask = send_IPI_mask,
+ .send_IPI_mask = default_send_IPI_mask,
.send_IPI_mask_allbutself = NULL,
- .send_IPI_allbutself = send_IPI_allbutself,
- .send_IPI_all = send_IPI_all,
+ .send_IPI_allbutself = bigsmp_send_IPI_allbutself,
+ .send_IPI_all = bigsmp_send_IPI_all,
.send_IPI_self = NULL,

.wakeup_cpu = NULL,
diff --git a/arch/x86/mach-generic/default.c b/arch/x86/mach-generic/default.c
index 477ebec..bf4670d 100644
--- a/arch/x86/mach-generic/default.c
+++ b/arch/x86/mach-generic/default.c
@@ -78,10 +78,10 @@ struct genapic apic_default = {
.cpu_mask_to_apicid = default_cpu_mask_to_apicid,
.cpu_mask_to_apicid_and = default_cpu_mask_to_apicid_and,

- .send_IPI_mask = send_IPI_mask,
+ .send_IPI_mask = default_send_IPI_mask,
.send_IPI_mask_allbutself = NULL,
- .send_IPI_allbutself = send_IPI_allbutself,
- .send_IPI_all = send_IPI_all,
+ .send_IPI_allbutself = default_send_IPI_allbutself,
+ .send_IPI_all = default_send_IPI_all,
.send_IPI_self = NULL,

.wakeup_cpu = NULL,
diff --git a/arch/x86/mach-generic/es7000.c b/arch/x86/mach-generic/es7000.c
index d758cf6..d36642e 100644
--- a/arch/x86/mach-generic/es7000.c
+++ b/arch/x86/mach-generic/es7000.c
@@ -133,10 +133,10 @@ struct genapic apic_es7000 = {
.cpu_mask_to_apicid = es7000_cpu_mask_to_apicid,
.cpu_mask_to_apicid_and = es7000_cpu_mask_to_apicid_and,

- .send_IPI_mask = send_IPI_mask,
+ .send_IPI_mask = es7000_send_IPI_mask,
.send_IPI_mask_allbutself = NULL,
- .send_IPI_allbutself = send_IPI_allbutself,
- .send_IPI_all = send_IPI_all,
+ .send_IPI_allbutself = es7000_send_IPI_allbutself,
+ .send_IPI_all = es7000_send_IPI_all,
.send_IPI_self = NULL,

.wakeup_cpu = NULL,
diff --git a/arch/x86/mach-generic/numaq.c b/arch/x86/mach-generic/numaq.c
index eb7d56a..135b183 100644
--- a/arch/x86/mach-generic/numaq.c
+++ b/arch/x86/mach-generic/numaq.c
@@ -97,10 +97,10 @@ struct genapic apic_numaq = {
.cpu_mask_to_apicid = numaq_cpu_mask_to_apicid,
.cpu_mask_to_apicid_and = numaq_cpu_mask_to_apicid_and,

- .send_IPI_mask = send_IPI_mask,
+ .send_IPI_mask = numaq_send_IPI_mask,
.send_IPI_mask_allbutself = NULL,
- .send_IPI_allbutself = send_IPI_allbutself,
- .send_IPI_all = send_IPI_all,
+ .send_IPI_allbutself = numaq_send_IPI_allbutself,
+ .send_IPI_all = numaq_send_IPI_all,
.send_IPI_self = NULL,

.wakeup_cpu = NULL,
diff --git a/arch/x86/mach-generic/summit.c b/arch/x86/mach-generic/summit.c
index 8c29305..77196a4 100644
--- a/arch/x86/mach-generic/summit.c
+++ b/arch/x86/mach-generic/summit.c
@@ -77,10 +77,10 @@ struct genapic apic_summit = {
.cpu_mask_to_apicid = summit_cpu_mask_to_apicid,
.cpu_mask_to_apicid_and = summit_cpu_mask_to_apicid_and,

- .send_IPI_mask = send_IPI_mask,
+ .send_IPI_mask = summit_send_IPI_mask,
.send_IPI_mask_allbutself = NULL,
- .send_IPI_allbutself = send_IPI_allbutself,
- .send_IPI_all = send_IPI_all,
+ .send_IPI_allbutself = summit_send_IPI_allbutself,
+ .send_IPI_all = summit_send_IPI_all,
.send_IPI_self = NULL,

.wakeup_cpu = NULL,
diff --git a/arch/x86/mm/tlb.c b/arch/x86/mm/tlb.c
index 72a6d4e..6348e11 100644
--- a/arch/x86/mm/tlb.c
+++ b/arch/x86/mm/tlb.c
@@ -196,7 +196,7 @@ static void flush_tlb_others_ipi(const struct cpumask *cpumask,
* We have to send the IPI only to
* CPUs affected.
*/
- send_IPI_mask(to_cpumask(f->flush_cpumask),
+ apic->send_IPI_mask(to_cpumask(f->flush_cpumask),
INVALIDATE_TLB_VECTOR_START + sender);

while (!cpumask_empty(to_cpumask(f->flush_cpumask)))
--
1.6.0.2

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