From b940d22d58c41b2ae491dca9232850f6f38f3653 Mon Sep 17 00:00:00 2001 From: "Eric W. Biederman" Date: Sun, 8 Oct 2006 07:43:46 -0600 Subject: [PATCH] [PATCH] i386/x86_64: Remove global IO_APIC_VECTOR Which vector an irq is assigned to now varies dynamically and is not needed outside of io_apic.c. So remove the possibility of accessing the information outside of io_apic.c and remove the silly macro that makes looking for users of irq_vector difficult. The fact this compiles ensures there aren't any more pieces of the old CONFIG_PCI_MSI weirdness that I failed to remove. Signed-off-by: Eric W. Biederman Signed-off-by: Linus Torvalds --- arch/i386/kernel/io_apic.c | 12 ++++++------ arch/x86_64/kernel/io_apic.c | 8 ++++---- include/asm-i386/hw_irq.h | 3 --- include/asm-x86_64/hw_irq.h | 2 -- 4 files changed, 10 insertions(+), 15 deletions(-) diff --git a/arch/i386/kernel/io_apic.c b/arch/i386/kernel/io_apic.c index b7287fb499f3..cd082c36ca03 100644 --- a/arch/i386/kernel/io_apic.c +++ b/arch/i386/kernel/io_apic.c @@ -1184,8 +1184,8 @@ static int __assign_irq_vector(int irq) BUG_ON((unsigned)irq >= NR_IRQ_VECTORS); - if (IO_APIC_VECTOR(irq) > 0) - return IO_APIC_VECTOR(irq); + if (irq_vector[irq] > 0) + return irq_vector[irq]; current_vector += 8; if (current_vector == SYSCALL_VECTOR) @@ -1199,7 +1199,7 @@ static int __assign_irq_vector(int irq) } vector = current_vector; - IO_APIC_VECTOR(irq) = vector; + irq_vector[irq] = vector; return vector; } @@ -1967,7 +1967,7 @@ static void ack_ioapic_quirk_irq(unsigned int irq) * operation to prevent an edge-triggered interrupt escaping meanwhile. * The idea is from Manfred Spraul. --macro */ - i = IO_APIC_VECTOR(irq); + i = irq_vector[irq]; v = apic_read(APIC_TMR + ((i & ~0x1f) >> 1)); @@ -1984,7 +1984,7 @@ static void ack_ioapic_quirk_irq(unsigned int irq) static int ioapic_retrigger_irq(unsigned int irq) { - send_IPI_self(IO_APIC_VECTOR(irq)); + send_IPI_self(irq_vector[irq]); return 1; } @@ -2020,7 +2020,7 @@ static inline void init_IO_APIC_traps(void) */ for (irq = 0; irq < NR_IRQS ; irq++) { int tmp = irq; - if (IO_APIC_IRQ(tmp) && !IO_APIC_VECTOR(tmp)) { + if (IO_APIC_IRQ(tmp) && !irq_vector[tmp]) { /* * Hmm.. We don't have an entry for this, * so default to an old-fashioned 8259 diff --git a/arch/x86_64/kernel/io_apic.c b/arch/x86_64/kernel/io_apic.c index 91728d9d3472..9c3b9b19d699 100644 --- a/arch/x86_64/kernel/io_apic.c +++ b/arch/x86_64/kernel/io_apic.c @@ -587,8 +587,8 @@ static int __assign_irq_vector(int irq, cpumask_t mask) BUG_ON((unsigned)irq >= NR_IRQ_VECTORS); - if (IO_APIC_VECTOR(irq) > 0) - old_vector = IO_APIC_VECTOR(irq); + if (irq_vector[irq] > 0) + old_vector = irq_vector[irq]; if ((old_vector > 0) && cpu_isset(old_vector >> 8, mask)) { return old_vector; } @@ -620,7 +620,7 @@ next: } per_cpu(vector_irq, cpu)[vector] = irq; vector |= cpu << 8; - IO_APIC_VECTOR(irq) = vector; + irq_vector[irq] = vector; return vector; } return -ENOSPC; @@ -1289,7 +1289,7 @@ static inline void init_IO_APIC_traps(void) */ for (irq = 0; irq < NR_IRQS ; irq++) { int tmp = irq; - if (IO_APIC_IRQ(tmp) && !IO_APIC_VECTOR(tmp)) { + if (IO_APIC_IRQ(tmp) && !irq_vector[tmp]) { /* * Hmm.. We don't have an entry for this, * so default to an old-fashioned 8259 diff --git a/include/asm-i386/hw_irq.h b/include/asm-i386/hw_irq.h index 8806c7e002a7..0bedbdf5e907 100644 --- a/include/asm-i386/hw_irq.h +++ b/include/asm-i386/hw_irq.h @@ -26,9 +26,6 @@ * Interrupt entry/exit code at both C and assembly level */ -extern u8 irq_vector[NR_IRQ_VECTORS]; -#define IO_APIC_VECTOR(irq) (irq_vector[irq]) - extern void (*interrupt[NR_IRQS])(void); #ifdef CONFIG_SMP diff --git a/include/asm-x86_64/hw_irq.h b/include/asm-x86_64/hw_irq.h index 53d0d9fd10d6..792dd52fcd70 100644 --- a/include/asm-x86_64/hw_irq.h +++ b/include/asm-x86_64/hw_irq.h @@ -74,10 +74,8 @@ #ifndef __ASSEMBLY__ -extern unsigned int irq_vector[NR_IRQ_VECTORS]; typedef int vector_irq_t[NR_VECTORS]; DECLARE_PER_CPU(vector_irq_t, vector_irq); -#define IO_APIC_VECTOR(irq) (irq_vector[irq]) /* * Various low-level irq details needed by irq.c, process.c, -- 2.39.5