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-rw-r--r--arch/x86_64/kernel/io_apic.c20
1 files changed, 7 insertions, 13 deletions
diff --git a/arch/x86_64/kernel/io_apic.c b/arch/x86_64/kernel/io_apic.c
index b000017e4b5d..0e89ae7e7b22 100644
--- a/arch/x86_64/kernel/io_apic.c
+++ b/arch/x86_64/kernel/io_apic.c
@@ -612,10 +612,7 @@ static int __assign_irq_vector(int irq, cpumask_t mask, cpumask_t *result)
* Also, we've got to be careful not to trash gate
* 0x80, because int 0x80 is hm, kind of importantish. ;)
*/
- static struct {
- int vector;
- int offset;
- } pos[NR_CPUS] = { [ 0 ... NR_CPUS - 1] = {FIRST_DEVICE_VECTOR, 0} };
+ static int current_vector = FIRST_DEVICE_VECTOR, current_offset = 0;
int old_vector = -1;
int cpu;
@@ -631,14 +628,13 @@ static int __assign_irq_vector(int irq, cpumask_t mask, cpumask_t *result)
for_each_cpu_mask(cpu, mask) {
cpumask_t domain;
- int first, new_cpu;
+ int new_cpu;
int vector, offset;
domain = vector_allocation_domain(cpu);
- first = first_cpu(domain);
- vector = pos[first].vector;
- offset = pos[first].offset;
+ vector = current_vector;
+ offset = current_offset;
next:
vector += 8;
if (vector >= FIRST_SYSTEM_VECTOR) {
@@ -646,7 +642,7 @@ next:
offset = (offset + 1) % 8;
vector = FIRST_DEVICE_VECTOR + offset;
}
- if (unlikely(pos[first].vector == vector))
+ if (unlikely(current_vector == vector))
continue;
if (vector == IA32_SYSCALL_VECTOR)
goto next;
@@ -654,10 +650,8 @@ next:
if (per_cpu(vector_irq, new_cpu)[vector] != -1)
goto next;
/* Found one! */
- for_each_cpu_mask(new_cpu, domain) {
- pos[new_cpu].vector = vector;
- pos[new_cpu].offset = offset;
- }
+ current_vector = vector;
+ current_offset = offset;
if (old_vector >= 0) {
int old_cpu;
for_each_cpu_mask(old_cpu, irq_domain[irq])