diff options
| author | Thomas Gleixner <tglx@linutronix.de> | 2017-09-13 23:29:31 +0200 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2017-09-25 20:51:54 +0200 |
| commit | 029c6e1c9df776fe1b2ba756a28fb65e9f9e9f69 (patch) | |
| tree | 6435980295a68b00b920e0f65079c20f1e999141 | |
| parent | 86ba65514f8730d58e2c11fb6e25caa537d6bc93 (diff) | |
x86/vector: Store the single CPU targets in apic data
Now that the interrupt affinities are targeted at single CPUs storing them
in a cpumask is overkill. Store them in a dedicated variable.
This does not yet remove the domain cpumasks because the current allocator
relies on them. Preparatory change for the allocator rework.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Juergen Gross <jgross@suse.com>
Tested-by: Yu Chen <yu.c.chen@intel.com>
Acked-by: Juergen Gross <jgross@suse.com>
Cc: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Marc Zyngier <marc.zyngier@arm.com>
Cc: Alok Kataria <akataria@vmware.com>
Cc: Joerg Roedel <joro@8bytes.org>
Cc: "Rafael J. Wysocki" <rjw@rjwysocki.net>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Rui Zhang <rui.zhang@intel.com>
Cc: "K. Y. Srinivasan" <kys@microsoft.com>
Cc: Arjan van de Ven <arjan@linux.intel.com>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: Len Brown <lenb@kernel.org>
Link: https://lkml.kernel.org/r/20170913213154.544867277@linutronix.de
| -rw-r--r-- | arch/x86/kernel/apic/vector.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/arch/x86/kernel/apic/vector.c b/arch/x86/kernel/apic/vector.c index a7f7c3730a09..7a9e0c6dd756 100644 --- a/arch/x86/kernel/apic/vector.c +++ b/arch/x86/kernel/apic/vector.c @@ -23,6 +23,8 @@ struct apic_chip_data { struct irq_cfg cfg; + unsigned int cpu; + unsigned int prev_cpu; cpumask_var_t domain; cpumask_var_t old_domain; u8 move_in_progress : 1; @@ -214,6 +216,7 @@ update: cpumask_and(d->old_domain, d->old_domain, cpu_online_mask); d->move_in_progress = !cpumask_empty(d->old_domain); d->cfg.old_vector = d->move_in_progress ? d->cfg.vector : 0; + d->prev_cpu = d->cpu; d->cfg.vector = vector; cpumask_copy(d->domain, vector_cpumask); success: @@ -228,6 +231,7 @@ success: cpumask_and(vector_searchmask, vector_searchmask, mask); BUG_ON(apic->cpu_mask_to_apicid(vector_searchmask, irqd, &d->cfg.dest_apicid)); + d->cpu = cpumask_first(vector_searchmask); return 0; } @@ -428,6 +432,7 @@ static void __init init_legacy_irqs(void) apicd->cfg.vector = ISA_IRQ_VECTOR(i); cpumask_copy(apicd->domain, cpumask_of(0)); + apicd->cpu = 0; irq_set_chip_data(i, apicd); } } |