[PATCH 1/3] x86, irq: Rename VECTOR_UNDEFINED and VECTOR_RETRIGGERED to IRQ_*

Bjorn Helgaas
2015-07-12T22:01:54Z

The per-cpu vector_irq[] table is indexed by CPU vector numbers, and each
entry contains an IRQ number.

Rename the special values VECTOR_UNDEFINED and VECTOR_RETRIGGERED to
IRQ_UNDEFINED and IRQ_RETRIGGERED to indicate that they are in the IRQ
number space, not the CPU vector number space.

No functional change.

Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
---
arch/x86/include/asm/hw_irq.h | 4 ++--
arch/x86/kernel/apic/vector.c | 14 +++++++-------
arch/x86/kernel/irq.c | 12 ++++++------
arch/x86/kernel/irqinit.c | 4 ++--
4 files changed, 17 insertions(+), 17 deletions(-)

diff --git a/arch/x86/include/asm/hw_irq.h b/arch/x86/include/asm/hw_irq.h
index 6615032..b51a1ca 100644
--- a/arch/x86/include/asm/hw_irq.h
+++ b/arch/x86/include/asm/hw_irq.h
@@ -182,8 +182,8 @@ extern char irq_entries_start[];
#define trace_irq_entries_start irq_entries_start
#endif

-#define VECTOR_UNDEFINED (-1)
-#define VECTOR_RETRIGGERED (-2)
+#define IRQ_UNDEFINED (-1)
+#define IRQ_RETRIGGERED (-2)

typedef int vector_irq_t[NR_VECTORS];
DECLARE_PER_CPU(vector_irq_t, vector_irq);
diff --git a/arch/x86/kernel/apic/vector.c b/arch/x86/kernel/apic/vector.c
index 28eba2d..8ae84b4 100644
--- a/arch/x86/kernel/apic/vector.c
+++ b/arch/x86/kernel/apic/vector.c
@@ -170,7 +170,7 @@ next:

for_each_cpu_and(new_cpu, vector_cpumask, cpu_online_mask) {
if (per_cpu(vector_irq, new_cpu)[vector] >
- VECTOR_UNDEFINED)
+ IRQ_UNDEFINED)
goto next;
}
/* Found one! */
@@ -232,7 +232,7 @@ static void clear_irq_vector(int irq, struct apic_chip_data *data)

vector = data->cfg.vector;
for_each_cpu_and(cpu, data->domain, cpu_online_mask)
- per_cpu(vector_irq, cpu)[vector] = VECTOR_UNDEFINED;
+ per_cpu(vector_irq, cpu)[vector] = IRQ_UNDEFINED;

data->cfg.vector = 0;
cpumask_clear(data->domain);
@@ -247,7 +247,7 @@ static void clear_irq_vector(int irq, struct apic_chip_data *data)
vector++) {
if (per_cpu(vector_irq, cpu)[vector] != irq)
continue;
- per_cpu(vector_irq, cpu)[vector] = VECTOR_UNDEFINED;
+ per_cpu(vector_irq, cpu)[vector] = IRQ_UNDEFINED;
break;
}
}
@@ -429,12 +429,12 @@ static void __setup_vector_irq(int cpu)
/* Mark the free vectors */
for (vector = 0; vector < NR_VECTORS; ++vector) {
irq = per_cpu(vector_irq, cpu)[vector];
- if (irq <= VECTOR_UNDEFINED)
+ if (irq <= IRQ_UNDEFINED)
continue;

data = apic_chip_data(irq_get_irq_data(irq));
if (!cpumask_test_cpu(cpu, data->domain))
- per_cpu(vector_irq, cpu)[vector] = VECTOR_UNDEFINED;
+ per_cpu(vector_irq, cpu)[vector] = IRQ_UNDEFINED;
}
raw_spin_unlock(&vector_lock);
}
@@ -553,7 +553,7 @@ asmlinkage __visible void smp_irq_move_cleanup_interrupt(void)

irq = __this_cpu_read(vector_irq[vector]);

- if (irq <= VECTOR_UNDEFINED)
+ if (irq <= IRQ_UNDEFINED)
continue;

desc = irq_to_desc(irq);
@@ -589,7 +589,7 @@ asmlinkage __visible void smp_irq_move_cleanup_interrupt(void)
apic->send_IPI_self(IRQ_MOVE_CLEANUP_VECTOR);
goto unlock;
}
- __this_cpu_write(vector_irq[vector], VECTOR_UNDEFINED);
+ __this_cpu_write(vector_irq[vector], IRQ_UNDEFINED);
unlock:
raw_spin_unlock(&desc->lock);
}
diff --git a/arch/x86/kernel/irq.c b/arch/x86/kernel/irq.c
index 88b36648..2949c6e 100644
--- a/arch/x86/kernel/irq.c
+++ b/arch/x86/kernel/irq.c
@@ -223,12 +223,12 @@ __visible unsigned int __irq_entry do_IRQ(struct pt_regs *regs)
if (!handle_irq(irq, regs)) {
ack_APIC_irq();

- if (irq != VECTOR_RETRIGGERED) {
+ if (irq != IRQ_RETRIGGERED) {
pr_emerg_ratelimited("%s: %d.%d No irq handler for vector (irq %d)\n",
__func__, smp_processor_id(),
vector, irq);
} else {
- __this_cpu_write(vector_irq[vector], VECTOR_UNDEFINED);
+ __this_cpu_write(vector_irq[vector], IRQ_UNDEFINED);
}
}

@@ -489,7 +489,7 @@ void fixup_irqs(void)
for (vector = FIRST_EXTERNAL_VECTOR; vector < NR_VECTORS; vector++) {
unsigned int irr;

- if (__this_cpu_read(vector_irq[vector]) <= VECTOR_UNDEFINED)
+ if (__this_cpu_read(vector_irq[vector]) <= IRQ_UNDEFINED)
continue;

irr = apic_read(APIC_IRR + (vector / 32 * 0x10));
@@ -502,12 +502,12 @@ void fixup_irqs(void)
raw_spin_lock(&desc->lock);
if (chip->irq_retrigger) {
chip->irq_retrigger(data);
- __this_cpu_write(vector_irq[vector], VECTOR_RETRIGGERED);
+ __this_cpu_write(vector_irq[vector], IRQ_RETRIGGERED);
}
raw_spin_unlock(&desc->lock);
}
- if (__this_cpu_read(vector_irq[vector]) != VECTOR_RETRIGGERED)
- __this_cpu_write(vector_irq[vector], VECTOR_UNDEFINED);
+ if (__this_cpu_read(vector_irq[vector]) != IRQ_RETRIGGERED)
+ __this_cpu_write(vector_irq[vector], IRQ_UNDEFINED);
}
}
#endif
diff --git a/arch/x86/kernel/irqinit.c b/arch/x86/kernel/irqinit.c
index a3a5e15..fc1822d 100644
--- a/arch/x86/kernel/irqinit.c
+++ b/arch/x86/kernel/irqinit.c
@@ -52,7 +52,7 @@ static struct irqaction irq2 = {
};

DEFINE_PER_CPU(vector_irq_t, vector_irq) = {
- [0 ... NR_VECTORS - 1] = VECTOR_UNDEFINED,
+ [0 ... NR_VECTORS - 1] = IRQ_UNDEFINED,
};

int vector_used_by_percpu_irq(unsigned int vector)
@@ -60,7 +60,7 @@ int vector_used_by_percpu_irq(unsigned int vector)
int cpu;

for_each_online_cpu(cpu) {
- if (per_cpu(vector_irq, cpu)[vector] > VECTOR_UNDEFINED)
+ if (per_cpu(vector_irq, cpu)[vector] > IRQ_UNDEFINED)
return 1;
}