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Date: Mon, 11 Aug 2008 18:34:08 +0400
From: Cyrill Gorcunov <gorcunov@...il.com>
To: Ingo Molnar <mingo@...e.hu>
Cc: Thomas Gleixner <tglx@...utronix.de>,
"H. Peter Anvin" <hpa@...or.com>, Andi Kleen <andi@...stfloor.org>,
"Maciej W. Rozycki" <macro@...ux-mips.org>,
Yinghai Lu <yhlu.kernel@...il.com>,
LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH -tip] x86: apic interrupts - move assignments to
irqinit_32.c
[Ingo Molnar - Mon, Aug 11, 2008 at 03:06:47PM +0200]
|
| * Ingo Molnar <mingo@...e.hu> wrote:
|
| > * Cyrill Gorcunov <gorcunov@...il.com> wrote:
| >
| > > 64bit mode APIC interrupt handlers are set within irqinit_64.c.
| > > Lets do tha same for 32bit mode which would help in furter code merging.
| > >
| > > Signed-off-by: Cyrill Gorcunov <gorcunov@...il.com>
| > > ---
| > >
| > > I found it useful for APIC code merging process (in which
| > > i'm now). So please review and test if possible.
| > > Any comments are quite welcome!
| > >
| > > Ugh... almost forget - the patch is over -tip tree
| > > commit 62c67a7cc7dbd9c8d92d49cfd7d5ca1d8f354616
| >
| > applied to tip/x86/core for more testing, thanks Cyrill.
|
| doesnt build:
|
| arch/x86/mach-default/setup.c:44: warning: ‘irq2’ defined but not used
| arch/x86/kernel/irqinit_32.c: In function ‘native_init_IRQ’:
| arch/x86/kernel/irqinit_32.c:139: error: ‘irq2’ undeclared (first use in this function)
| arch/x86/kernel/irqinit_32.c:139: error: (Each undeclared identifier is reported only once
| arch/x86/kernel/irqinit_32.c:139: error: for each function it appears in.)
|
| with:
|
| http://redhat.com/~mingo/misc/config-Mon_Aug_11_14_48_29_CEST_2008.bad
|
| Ingo
|
Sorry, Ingo, for that. Here is an updated version. Could you please
update it?
- Cyrill -
---
From: Cyrill Gorcunov <gorcunov@...il.com>
Subject: [PATCH -tip] x86: apic interrupts - move assignments to irqinit_32.c v2
64bit mode APIC interrupt handlers are set within irqinit_64.c.
Lets do tha same for 32bit mode which would help in furter code merging.
Signed-off-by: Cyrill Gorcunov <gorcunov@...il.com>
---
The patch is on top of 62c67a7cc7dbd9c8d92d49cfd7d5ca1d8f354616 -tip tree.
Index: linux-2.6.git/arch/x86/kernel/apic_32.c
===================================================================
--- linux-2.6.git.orig/arch/x86/kernel/apic_32.c 2008-08-11 18:16:22.000000000 +0400
+++ linux-2.6.git/arch/x86/kernel/apic_32.c 2008-08-11 18:18:13.000000000 +0400
@@ -1366,54 +1366,6 @@ void smp_error_interrupt(struct pt_regs
irq_exit();
}
-#ifdef CONFIG_SMP
-void __init smp_intr_init(void)
-{
- /*
- * IRQ0 must be given a fixed assignment and initialized,
- * because it's used before the IO-APIC is set up.
- */
- set_intr_gate(FIRST_DEVICE_VECTOR, interrupt[0]);
-
- /*
- * The reschedule interrupt is a CPU-to-CPU reschedule-helper
- * IPI, driven by wakeup.
- */
- alloc_intr_gate(RESCHEDULE_VECTOR, reschedule_interrupt);
-
- /* IPI for invalidation */
- alloc_intr_gate(INVALIDATE_TLB_VECTOR, invalidate_interrupt);
-
- /* IPI for generic function call */
- alloc_intr_gate(CALL_FUNCTION_VECTOR, call_function_interrupt);
-
- /* IPI for single call function */
- set_intr_gate(CALL_FUNCTION_SINGLE_VECTOR,
- call_function_single_interrupt);
-}
-#endif
-
-/*
- * Initialize APIC interrupts
- */
-void __init apic_intr_init(void)
-{
-#ifdef CONFIG_SMP
- smp_intr_init();
-#endif
- /* self generated IPI for local APIC timer */
- alloc_intr_gate(LOCAL_TIMER_VECTOR, apic_timer_interrupt);
-
- /* IPI vectors for APIC spurious and error interrupts */
- alloc_intr_gate(SPURIOUS_APIC_VECTOR, spurious_interrupt);
- alloc_intr_gate(ERROR_APIC_VECTOR, error_interrupt);
-
- /* thermal monitor LVT interrupt */
-#ifdef CONFIG_X86_MCE_P4THERMAL
- alloc_intr_gate(THERMAL_APIC_VECTOR, thermal_interrupt);
-#endif
-}
-
/**
* connect_bsp_APIC - attach the APIC to the interrupt system
*/
Index: linux-2.6.git/arch/x86/kernel/irqinit_32.c
===================================================================
--- linux-2.6.git.orig/arch/x86/kernel/irqinit_32.c 2008-08-11 18:16:22.000000000 +0400
+++ linux-2.6.git/arch/x86/kernel/irqinit_32.c 2008-08-11 18:23:51.000000000 +0400
@@ -74,6 +74,15 @@ void __init init_ISA_irqs (void)
}
}
+/*
+ * IRQ2 is cascade interrupt to second interrupt controller
+ */
+static struct irqaction irq2 = {
+ .handler = no_action,
+ .mask = CPU_MASK_NONE,
+ .name = "cascade",
+};
+
/* Overridden in paravirt.c */
void init_IRQ(void) __attribute__((weak, alias("native_init_IRQ")));
@@ -98,6 +107,46 @@ void __init native_init_IRQ(void)
set_intr_gate(vector, interrupt[i]);
}
+#if defined(CONFIG_X86_LOCAL_APIC) && defined(CONFIG_SMP)
+ /*
+ * IRQ0 must be given a fixed assignment and initialized,
+ * because it's used before the IO-APIC is set up.
+ */
+ set_intr_gate(FIRST_DEVICE_VECTOR, interrupt[0]);
+
+ /*
+ * The reschedule interrupt is a CPU-to-CPU reschedule-helper
+ * IPI, driven by wakeup.
+ */
+ alloc_intr_gate(RESCHEDULE_VECTOR, reschedule_interrupt);
+
+ /* IPI for invalidation */
+ alloc_intr_gate(INVALIDATE_TLB_VECTOR, invalidate_interrupt);
+
+ /* IPI for generic function call */
+ alloc_intr_gate(CALL_FUNCTION_VECTOR, call_function_interrupt);
+
+ /* IPI for single call function */
+ set_intr_gate(CALL_FUNCTION_SINGLE_VECTOR, call_function_single_interrupt);
+#endif
+
+#ifdef CONFIG_X86_LOCAL_APIC
+ /* self generated IPI for local APIC timer */
+ alloc_intr_gate(LOCAL_TIMER_VECTOR, apic_timer_interrupt);
+
+ /* IPI vectors for APIC spurious and error interrupts */
+ alloc_intr_gate(SPURIOUS_APIC_VECTOR, spurious_interrupt);
+ alloc_intr_gate(ERROR_APIC_VECTOR, error_interrupt);
+#endif
+
+#if defined(CONFIG_X86_LOCAL_APIC) && defined(CONFIG_X86_MCE_P4THERMAL)
+ /* thermal monitor LVT interrupt */
+ alloc_intr_gate(THERMAL_APIC_VECTOR, thermal_interrupt);
+#endif
+
+ if (!acpi_ioapic)
+ setup_irq(2, &irq2);
+
/* setup after call gates are initialised (usually add in
* the architecture specific gates)
*/
Index: linux-2.6.git/arch/x86/mach-default/setup.c
===================================================================
--- linux-2.6.git.orig/arch/x86/mach-default/setup.c 2008-08-11 18:16:22.000000000 +0400
+++ linux-2.6.git/arch/x86/mach-default/setup.c 2008-08-11 18:22:51.000000000 +0400
@@ -38,15 +38,6 @@ void __init pre_intr_init_hook(void)
init_ISA_irqs();
}
-/*
- * IRQ2 is cascade interrupt to second interrupt controller
- */
-static struct irqaction irq2 = {
- .handler = no_action,
- .mask = CPU_MASK_NONE,
- .name = "cascade",
-};
-
/**
* intr_init_hook - post gate setup interrupt initialisation
*
@@ -62,12 +53,6 @@ void __init intr_init_hook(void)
if (x86_quirks->arch_intr_init())
return;
}
-#ifdef CONFIG_X86_LOCAL_APIC
- apic_intr_init();
-#endif
-
- if (!acpi_ioapic)
- setup_irq(2, &irq2);
}
/**
Index: linux-2.6.git/include/asm-x86/arch_hooks.h
===================================================================
--- linux-2.6.git.orig/include/asm-x86/arch_hooks.h 2008-08-11 18:16:22.000000000 +0400
+++ linux-2.6.git/include/asm-x86/arch_hooks.h 2008-08-11 18:18:13.000000000 +0400
@@ -12,8 +12,6 @@
/* these aren't arch hooks, they are generic routines
* that can be used by the hooks */
extern void init_ISA_irqs(void);
-extern void apic_intr_init(void);
-extern void smp_intr_init(void);
extern irqreturn_t timer_interrupt(int irq, void *dev_id);
/* these are the defined hooks */
--
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