diff options
| author | Eric W. Biederman <ebiederm@xmission.com> | 2007-02-23 04:11:56 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-02-26 10:34:07 -0800 |
| commit | fc5d56f987170cda1d344095c4df65a60a3e9820 (patch) | |
| tree | d73ca9b3f20112c42e515127c04c8e3be0bfe178 /arch/x86_64 | |
| parent | ea3d5226f52ef30f52aa0a04f47f5919c7facacf (diff) | |
[PATCH] x86_64 irq: Simplfy __assign_irq_vector
By precomputing old_mask I remove an extra if statement, remove an
indentation level and make the code slightly easier to read.
Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch/x86_64')
| -rw-r--r-- | arch/x86_64/kernel/io_apic.c | 13 |
1 files changed, 5 insertions, 8 deletions
diff --git a/arch/x86_64/kernel/io_apic.c b/arch/x86_64/kernel/io_apic.c index 950682f35766..357b354921c1 100644 --- a/arch/x86_64/kernel/io_apic.c +++ b/arch/x86_64/kernel/io_apic.c @@ -685,6 +685,7 @@ static int __assign_irq_vector(int irq, cpumask_t mask, cpumask_t *result) * 0x80, because int 0x80 is hm, kind of importantish. ;) */ static int current_vector = FIRST_DEVICE_VECTOR, current_offset = 0; + cpumask_t old_mask = CPU_MASK_NONE; int old_vector = -1; int cpu; @@ -699,11 +700,12 @@ static int __assign_irq_vector(int irq, cpumask_t mask, cpumask_t *result) cpus_and(*result, irq_domain[irq], mask); if (!cpus_empty(*result)) return old_vector; + cpus_and(old_mask, irq_domain[irq], cpu_online_map); } for_each_cpu_mask(cpu, mask) { cpumask_t domain, new_mask; - int new_cpu; + int new_cpu, old_cpu; int vector, offset; domain = vector_allocation_domain(cpu); @@ -728,13 +730,8 @@ next: /* Found one! */ current_vector = vector; current_offset = offset; - if (old_vector >= 0) { - cpumask_t old_mask; - int old_cpu; - cpus_and(old_mask, irq_domain[irq], cpu_online_map); - for_each_cpu_mask(old_cpu, old_mask) - per_cpu(vector_irq, old_cpu)[old_vector] = -1; - } + for_each_cpu_mask(old_cpu, old_mask) + per_cpu(vector_irq, old_cpu)[old_vector] = -1; for_each_cpu_mask(new_cpu, new_mask) per_cpu(vector_irq, new_cpu)[vector] = irq; irq_vector[irq] = vector; |