diff options
author | Thomas Gleixner <tglx@linutronix.de> | 2017-09-13 23:29:37 +0200 |
---|---|---|
committer | Thomas Gleixner <tglx@linutronix.de> | 2017-09-25 20:51:56 +0200 |
commit | 9f9e3bb1cf2ecba7697bfb5e350ad2648e69dbdf (patch) | |
tree | 15cd5de24aef1fa44498aee33fe4ae76c5c751eb /arch/x86/kernel/apic/apic_common.c | |
parent | 99a1482d8aa105922dc4a3360ab11600f0bc9d80 (diff) |
x86/apic: Add replacement for cpu_mask_to_apicid()
As preparation for replacing the vector allocator, provide a new function
which takes a cpu number instead of a cpu mask to calculate/lookup the
resulting APIC destination id.
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>
Diffstat (limited to 'arch/x86/kernel/apic/apic_common.c')
-rw-r--r-- | arch/x86/kernel/apic/apic_common.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/arch/x86/kernel/apic/apic_common.c b/arch/x86/kernel/apic/apic_common.c index 4791654cdeb2..ddc6a4301588 100644 --- a/arch/x86/kernel/apic/apic_common.c +++ b/arch/x86/kernel/apic/apic_common.c @@ -6,6 +6,11 @@ #include <linux/irq.h> #include <asm/apic.h> +u32 apic_default_calc_apicid(unsigned int cpu) +{ + return per_cpu(x86_cpu_to_apicid, cpu); +} + int default_cpu_mask_to_apicid(const struct cpumask *msk, struct irq_data *irqd, unsigned int *apicid) { @@ -18,6 +23,11 @@ int default_cpu_mask_to_apicid(const struct cpumask *msk, struct irq_data *irqd, return 0; } +u32 apic_flat_calc_apicid(unsigned int cpu) +{ + return 1U << cpu; +} + int flat_cpu_mask_to_apicid(const struct cpumask *mask, struct irq_data *irqd, unsigned int *apicid) |