Commit-ID: c7d6c9dd871f42c4e0ce5563d2f684e78ea673cf Gitweb: http://git.kernel.org/tip/c7d6c9dd871f42c4e0ce5563d2f684e78ea673cf Author: Thomas Gleixner <t...@linutronix.de> AuthorDate: Tue, 20 Jun 2017 01:37:46 +0200 Committer: Thomas Gleixner <t...@linutronix.de> CommitDate: Thu, 22 Jun 2017 18:21:23 +0200
x86/apic: Implement effective irq mask update Add the effective irq mask update to the apic implementations and enable effective irq masks for x86. Signed-off-by: Thomas Gleixner <t...@linutronix.de> Cc: Jens Axboe <ax...@kernel.dk> Cc: Marc Zyngier <marc.zyng...@arm.com> Cc: Michael Ellerman <m...@ellerman.id.au> Cc: Keith Busch <keith.bu...@intel.com> Cc: Peter Zijlstra <pet...@infradead.org> Cc: Christoph Hellwig <h...@lst.de> Link: http://lkml.kernel.org/r/20170619235446.878370...@linutronix.de --- arch/x86/Kconfig | 1 + arch/x86/kernel/apic/apic.c | 3 +++ arch/x86/kernel/apic/x2apic_cluster.c | 4 ++++ 3 files changed, 8 insertions(+) diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig index fcf1dad..0172c0b 100644 --- a/arch/x86/Kconfig +++ b/arch/x86/Kconfig @@ -87,6 +87,7 @@ config X86 select GENERIC_EARLY_IOREMAP select GENERIC_FIND_FIRST_BIT select GENERIC_IOMAP + select GENERIC_IRQ_EFFECTIVE_AFF_MASK if SMP select GENERIC_IRQ_MIGRATION if SMP select GENERIC_IRQ_PROBE select GENERIC_IRQ_SHOW diff --git a/arch/x86/kernel/apic/apic.c b/arch/x86/kernel/apic/apic.c index 14e5a47..e740946 100644 --- a/arch/x86/kernel/apic/apic.c +++ b/arch/x86/kernel/apic/apic.c @@ -2210,6 +2210,7 @@ int default_cpu_mask_to_apicid(const struct cpumask *mask, if (cpu >= nr_cpu_ids) return -EINVAL; *apicid = per_cpu(x86_cpu_to_apicid, cpu); + irq_data_update_effective_affinity(irqdata, cpumask_of(cpu)); return 0; } @@ -2218,11 +2219,13 @@ int flat_cpu_mask_to_apicid(const struct cpumask *mask, unsigned int *apicid) { + struct cpumask *effmsk = irq_data_get_effective_affinity_mask(irqdata); unsigned long cpu_mask = cpumask_bits(mask)[0] & APIC_ALL_CPUS; if (!cpu_mask) return -EINVAL; *apicid = (unsigned int)cpu_mask; + cpumask_bits(effmsk)[0] = cpu_mask; return 0; } diff --git a/arch/x86/kernel/apic/x2apic_cluster.c b/arch/x86/kernel/apic/x2apic_cluster.c index 305031e..481237c 100644 --- a/arch/x86/kernel/apic/x2apic_cluster.c +++ b/arch/x86/kernel/apic/x2apic_cluster.c @@ -4,6 +4,7 @@ #include <linux/kernel.h> #include <linux/ctype.h> #include <linux/dmar.h> +#include <linux/irq.h> #include <linux/cpu.h> #include <asm/smp.h> @@ -107,6 +108,7 @@ static int x2apic_cpu_mask_to_apicid(const struct cpumask *mask, struct irq_data *irqdata, unsigned int *apicid) { + struct cpumask *effmsk = irq_data_get_effective_affinity_mask(irqdata); unsigned int cpu; u32 dest = 0; u16 cluster; @@ -118,10 +120,12 @@ x2apic_cpu_mask_to_apicid(const struct cpumask *mask, struct irq_data *irqdata, dest = per_cpu(x86_cpu_to_logical_apicid, cpu); cluster = x2apic_cluster(cpu); + cpumask_clear(effmsk); for_each_cpu(cpu, mask) { if (cluster != x2apic_cluster(cpu)) continue; dest |= per_cpu(x86_cpu_to_logical_apicid, cpu); + cpumask_set_cpu(cpu, effmsk); } *apicid = dest;
