From 5ff5115efafb08b49cbc8abdea9726884fba0b5a Mon Sep 17 00:00:00 2001 From: "Eric W. Biederman" Date: Fri, 23 Feb 2007 04:20:59 -0700 Subject: [PATCH] [PATCH] x86_64 irq: Simplfiy the set_affinity logic. For some reason the code has been picking TARGET_CPUS when asked to set the affinity to an empty set of cpus. That is just silly it's extra work. Instead if there are no cpus to set the affinity to we should just give up immediately. That is simpler and a little more intuitive. Signed-off-by: Eric W. Biederman Signed-off-by: Linus Torvalds --- arch/x86_64/kernel/io_apic.c | 12 +++--------- 1 file changed, 3 insertions(+), 9 deletions(-) diff --git a/arch/x86_64/kernel/io_apic.c b/arch/x86_64/kernel/io_apic.c index e0648380fdde..74671defbbe3 100644 --- a/arch/x86_64/kernel/io_apic.c +++ b/arch/x86_64/kernel/io_apic.c @@ -244,9 +244,7 @@ static void set_ioapic_affinity_irq(unsigned int irq, cpumask_t mask) cpus_and(tmp, mask, cpu_online_map); if (cpus_empty(tmp)) - tmp = TARGET_CPUS; - - cpus_and(mask, tmp, CPU_MASK_ALL); + return; vector = assign_irq_vector(irq, mask, &tmp); if (vector < 0) @@ -1890,9 +1888,7 @@ static void set_msi_irq_affinity(unsigned int irq, cpumask_t mask) cpus_and(tmp, mask, cpu_online_map); if (cpus_empty(tmp)) - tmp = TARGET_CPUS; - - cpus_and(mask, tmp, CPU_MASK_ALL); + return; vector = assign_irq_vector(irq, mask, &tmp); if (vector < 0) @@ -1985,9 +1981,7 @@ static void set_ht_irq_affinity(unsigned int irq, cpumask_t mask) cpus_and(tmp, mask, cpu_online_map); if (cpus_empty(tmp)) - tmp = TARGET_CPUS; - - cpus_and(mask, tmp, CPU_MASK_ALL); + return; vector = assign_irq_vector(irq, mask, &tmp); if (vector < 0) -- 2.20.1