Commit-ID: 029c6e1c9df776fe1b2ba756a28fb65e9f9e9f69 Gitweb: http://git.kernel.org/tip/029c6e1c9df776fe1b2ba756a28fb65e9f9e9f69 Author: Thomas Gleixner <tglx@xxxxxxxxxxxxx> AuthorDate: Wed, 13 Sep 2017 23:29:31 +0200 Committer: Thomas Gleixner <tglx@xxxxxxxxxxxxx> CommitDate: Mon, 25 Sep 2017 20:51:54 +0200 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@xxxxxxxxxxxxx> Tested-by: Juergen Gross <jgross@xxxxxxxx> Tested-by: Yu Chen <yu.c.chen@xxxxxxxxx> Acked-by: Juergen Gross <jgross@xxxxxxxx> Cc: Boris Ostrovsky <boris.ostrovsky@xxxxxxxxxx> Cc: Tony Luck <tony.luck@xxxxxxxxx> Cc: Marc Zyngier <marc.zyngier@xxxxxxx> Cc: Alok Kataria <akataria@xxxxxxxxxx> Cc: Joerg Roedel <joro@xxxxxxxxxx> Cc: "Rafael J. Wysocki" <rjw@xxxxxxxxxxxxx> Cc: Steven Rostedt <rostedt@xxxxxxxxxxx> Cc: Christoph Hellwig <hch@xxxxxx> Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx> Cc: Borislav Petkov <bp@xxxxxxxxx> Cc: Paolo Bonzini <pbonzini@xxxxxxxxxx> Cc: Rui Zhang <rui.zhang@xxxxxxxxx> Cc: "K. Y. Srinivasan" <kys@xxxxxxxxxxxxx> Cc: Arjan van de Ven <arjan@xxxxxxxxxxxxxxx> Cc: Dan Williams <dan.j.williams@xxxxxxxxx> Cc: Len Brown <lenb@xxxxxxxxxx> Link: https://lkml.kernel.org/r/20170913213154.544867277@xxxxxxxxxxxxx --- arch/x86/kernel/apic/vector.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/arch/x86/kernel/apic/vector.c b/arch/x86/kernel/apic/vector.c index a7f7c37..7a9e0c6 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); } } -- To unsubscribe from this list: send the line "unsubscribe linux-tip-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
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