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Date: Wed, 28 Jan 2009 23:42:09 +0000
From: Ingo Molnar <mingo@...e.hu>
To: linux-kernel@...r.kernel.org
Cc: "H. Peter Anvin" <hpa@...or.com>,
Thomas Gleixner <tglx@...utronix.de>,
Ingo Molnar <mingo@...e.hu>
Subject: [PATCH 063/114] x86, smp: refactor ->smp_callin_clear_local_apic() methods
Only NUMAQ does something substantial here, because it initializes
via NMIs (not via INIT as standard SMP startup) - so it needs to
reset the APIC.
- extend the generic code to handle NULL methods
- clear out dummy methods and replace them with NULL
- clean up: remove wrapper macros, etc.
Signed-off-by: Ingo Molnar <mingo@...e.hu>
---
arch/x86/include/asm/es7000/wakecpu.h | 5 -----
arch/x86/include/asm/mach-default/mach_wakecpu.h | 5 -----
arch/x86/include/asm/mach-generic/mach_wakecpu.h | 1 -
arch/x86/include/asm/numaq/wakecpu.h | 4 ++--
arch/x86/kernel/smpboot.c | 3 ++-
arch/x86/mach-generic/bigsmp.c | 3 ++-
arch/x86/mach-generic/default.c | 2 +-
arch/x86/mach-generic/es7000.c | 4 +++-
arch/x86/mach-generic/numaq.c | 2 +-
arch/x86/mach-generic/summit.c | 3 ++-
10 files changed, 13 insertions(+), 19 deletions(-)
diff --git a/arch/x86/include/asm/es7000/wakecpu.h b/arch/x86/include/asm/es7000/wakecpu.h
index 5c4d05f..e8e0396 100644
--- a/arch/x86/include/asm/es7000/wakecpu.h
+++ b/arch/x86/include/asm/es7000/wakecpu.h
@@ -13,11 +13,6 @@ static inline void es7000_wait_for_init_deassert(atomic_t *deassert)
return;
}
-/* Nothing to do for most platforms, since cleared by the INIT cycle */
-static inline void smp_callin_clear_local_apic(void)
-{
-}
-
static inline void store_NMI_vector(unsigned short *high, unsigned short *low)
{
}
diff --git a/arch/x86/include/asm/mach-default/mach_wakecpu.h b/arch/x86/include/asm/mach-default/mach_wakecpu.h
index 1d34c69..d059807 100644
--- a/arch/x86/include/asm/mach-default/mach_wakecpu.h
+++ b/arch/x86/include/asm/mach-default/mach_wakecpu.h
@@ -8,11 +8,6 @@ static inline void default_wait_for_init_deassert(atomic_t *deassert)
return;
}
-/* Nothing to do for most platforms, since cleared by the INIT cycle */
-static inline void smp_callin_clear_local_apic(void)
-{
-}
-
static inline void store_NMI_vector(unsigned short *high, unsigned short *low)
{
}
diff --git a/arch/x86/include/asm/mach-generic/mach_wakecpu.h b/arch/x86/include/asm/mach-generic/mach_wakecpu.h
index 58e5412..30515a1 100644
--- a/arch/x86/include/asm/mach-generic/mach_wakecpu.h
+++ b/arch/x86/include/asm/mach-generic/mach_wakecpu.h
@@ -1,7 +1,6 @@
#ifndef _ASM_X86_MACH_GENERIC_MACH_WAKECPU_H
#define _ASM_X86_MACH_GENERIC_MACH_WAKECPU_H
-#define smp_callin_clear_local_apic (apic->smp_callin_clear_local_apic)
#define store_NMI_vector (apic->store_NMI_vector)
#define restore_NMI_vector (apic->restore_NMI_vector)
#define inquire_remote_apic (apic->inquire_remote_apic)
diff --git a/arch/x86/include/asm/numaq/wakecpu.h b/arch/x86/include/asm/numaq/wakecpu.h
index 884b95c..61d0a7d 100644
--- a/arch/x86/include/asm/numaq/wakecpu.h
+++ b/arch/x86/include/asm/numaq/wakecpu.h
@@ -8,9 +8,9 @@
/*
* Because we use NMIs rather than the INIT-STARTUP sequence to
- * bootstrap the CPUs, the APIC may be in a weird state. Kick it.
+ * bootstrap the CPUs, the APIC may be in a weird state. Kick it:
*/
-static inline void smp_callin_clear_local_apic(void)
+static inline void numaq_smp_callin_clear_local_apic(void)
{
clear_local_APIC();
}
diff --git a/arch/x86/kernel/smpboot.c b/arch/x86/kernel/smpboot.c
index 558af37..10873a4 100644
--- a/arch/x86/kernel/smpboot.c
+++ b/arch/x86/kernel/smpboot.c
@@ -244,7 +244,8 @@ static void __cpuinit smp_callin(void)
*/
pr_debug("CALLIN, before setup_local_APIC().\n");
- smp_callin_clear_local_apic();
+ if (apic->smp_callin_clear_local_apic)
+ apic->smp_callin_clear_local_apic();
setup_local_APIC();
end_local_APIC_setup();
map_cpu_to_logical_apicid();
diff --git a/arch/x86/mach-generic/bigsmp.c b/arch/x86/mach-generic/bigsmp.c
index 40910bf..bd069e7 100644
--- a/arch/x86/mach-generic/bigsmp.c
+++ b/arch/x86/mach-generic/bigsmp.c
@@ -109,7 +109,8 @@ struct genapic apic_bigsmp = {
.wait_for_init_deassert = default_wait_for_init_deassert,
- .smp_callin_clear_local_apic = smp_callin_clear_local_apic,
+ .smp_callin_clear_local_apic = NULL,
+
.store_NMI_vector = store_NMI_vector,
.restore_NMI_vector = restore_NMI_vector,
.inquire_remote_apic = inquire_remote_apic,
diff --git a/arch/x86/mach-generic/default.c b/arch/x86/mach-generic/default.c
index c246484..a25e6ef 100644
--- a/arch/x86/mach-generic/default.c
+++ b/arch/x86/mach-generic/default.c
@@ -90,7 +90,7 @@ struct genapic apic_default = {
.wait_for_init_deassert = default_wait_for_init_deassert,
- .smp_callin_clear_local_apic = smp_callin_clear_local_apic,
+ .smp_callin_clear_local_apic = NULL,
.store_NMI_vector = store_NMI_vector,
.restore_NMI_vector = restore_NMI_vector,
.inquire_remote_apic = inquire_remote_apic,
diff --git a/arch/x86/mach-generic/es7000.c b/arch/x86/mach-generic/es7000.c
index 4cb3984..ab41b54 100644
--- a/arch/x86/mach-generic/es7000.c
+++ b/arch/x86/mach-generic/es7000.c
@@ -145,7 +145,9 @@ struct genapic apic_es7000 = {
.wait_for_init_deassert = default_wait_for_init_deassert,
- .smp_callin_clear_local_apic = smp_callin_clear_local_apic,
+ /* Nothing to do for most platforms, since cleared by the INIT cycle: */
+ .smp_callin_clear_local_apic = NULL,
+
.store_NMI_vector = store_NMI_vector,
.restore_NMI_vector = restore_NMI_vector,
.inquire_remote_apic = inquire_remote_apic,
diff --git a/arch/x86/mach-generic/numaq.c b/arch/x86/mach-generic/numaq.c
index fb03867..4d3924f 100644
--- a/arch/x86/mach-generic/numaq.c
+++ b/arch/x86/mach-generic/numaq.c
@@ -110,7 +110,7 @@ struct genapic apic_numaq = {
/* We don't do anything here because we use NMI's to boot instead */
.wait_for_init_deassert = NULL,
- .smp_callin_clear_local_apic = smp_callin_clear_local_apic,
+ .smp_callin_clear_local_apic = numaq_smp_callin_clear_local_apic,
.store_NMI_vector = store_NMI_vector,
.restore_NMI_vector = restore_NMI_vector,
.inquire_remote_apic = inquire_remote_apic,
diff --git a/arch/x86/mach-generic/summit.c b/arch/x86/mach-generic/summit.c
index fdca78b..2595baa 100644
--- a/arch/x86/mach-generic/summit.c
+++ b/arch/x86/mach-generic/summit.c
@@ -89,7 +89,8 @@ struct genapic apic_summit = {
.wait_for_init_deassert = default_wait_for_init_deassert,
- .smp_callin_clear_local_apic = smp_callin_clear_local_apic,
+ .smp_callin_clear_local_apic = NULL,
+
.store_NMI_vector = store_NMI_vector,
.restore_NMI_vector = restore_NMI_vector,
.inquire_remote_apic = inquire_remote_apic,
--
1.6.0.2
--
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