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| 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/x2apic_cluster.c | |
| parent | x86/vector: Move helper functions around (diff) | |
| download | linux-9f9e3bb1cf2ecba7697bfb5e350ad2648e69dbdf.tar.xz linux-9f9e3bb1cf2ecba7697bfb5e350ad2648e69dbdf.zip | |
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/x2apic_cluster.c')
| -rw-r--r-- | arch/x86/kernel/apic/x2apic_cluster.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/arch/x86/kernel/apic/x2apic_cluster.c b/arch/x86/kernel/apic/x2apic_cluster.c index c1684f27226e..17bf63f580d7 100644 --- a/arch/x86/kernel/apic/x2apic_cluster.c +++ b/arch/x86/kernel/apic/x2apic_cluster.c @@ -114,6 +114,11 @@ x2apic_cpu_mask_to_apicid(const struct cpumask *mask, struct irq_data *irqdata, return 0; } +static u32 x2apic_calc_apicid(unsigned int cpu) +{ + return per_cpu(x86_cpu_to_logical_apicid, cpu); +} + static void init_x2apic_ldr(void) { struct cluster_mask *cmsk = this_cpu_read(cluster_masks); @@ -245,6 +250,7 @@ static struct apic apic_x2apic_cluster __ro_after_init = { .set_apic_id = x2apic_set_apic_id, .cpu_mask_to_apicid = x2apic_cpu_mask_to_apicid, + .calc_dest_apicid = x2apic_calc_apicid, .send_IPI = x2apic_send_IPI, .send_IPI_mask = x2apic_send_IPI_mask, |