linux_dsm_epyc7002/arch/x86/kernel/apic
Suresh Siddha 1ac322d0b1 x86/apic/x2apic: Limit the vector reservation to the user specified mask
For the x2apic cluster mode, vector for an interrupt is
currently reserved on all the cpu's that are part of the x2apic
cluster. But the interrupts will be routed only to the cluster
(derived from the first cpu in the mask) members specified in
the mask. So there is no need to reserve the vector in the
unused cluster members.

Modify __assign_irq_vector() to reserve the vectors based on the
user specified irq destination mask. If the new mask is a proper
subset of the currently used mask, cleanup the vector allocation
on the unused cpu members.

Also, allow the apic driver to tune the vector domain based on
the affinity mask (which in most cases is the user-specified
mask).

Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com>
Acked-by: Yinghai Lu <yinghai@kernel.org>
Acked-by: Alexander Gordeev <agordeev@redhat.com>
Acked-by: Cyrill Gorcunov <gorcunov@openvz.org>
Link: http://lkml.kernel.org/r/1340656709-11423-3-git-send-email-suresh.b.siddha@intel.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2012-07-06 11:00:22 +02:00
..
apic_flat_64.c x86/apic: Eliminate cpu_mask_to_apicid() operation 2012-06-14 12:53:13 +02:00
apic_noop.c x86/apic/x2apic: Limit the vector reservation to the user specified mask 2012-07-06 11:00:22 +02:00
apic_numachip.c x86/apic: Eliminate cpu_mask_to_apicid() operation 2012-06-14 12:53:13 +02:00
apic.c x86/apic: Fix ugly casting and branching in cpu_mask_to_apicid_and() 2012-06-14 12:53:14 +02:00
bigsmp_32.c x86/apic: Eliminate cpu_mask_to_apicid() operation 2012-06-14 12:53:13 +02:00
es7000_32.c x86/apic/es7000: Make apicid of a cluster (not CPU) from a cpumask 2012-06-14 12:53:16 +02:00
hw_nmi.c x86, nmi: Wire up NMI handlers to new routines 2011-10-10 06:56:57 +02:00
io_apic.c x86/apic/x2apic: Limit the vector reservation to the user specified mask 2012-07-06 11:00:22 +02:00
ipi.c x86: Always use x86_cpu_to_logical_apicid for cpu -> logical apic id 2011-01-28 14:54:05 +01:00
Makefile x86: Add NumaChip support 2011-12-05 17:17:24 +01:00
numaq_32.c x86/apic: Eliminate cpu_mask_to_apicid() operation 2012-06-14 12:53:13 +02:00
probe_32.c Merge branch 'x86/apic' into x86/platform 2012-06-18 11:09:49 +02:00
probe_64.c x86/platform: Introduce APIC post-initialization callback 2012-06-06 09:06:19 +02:00
summit_32.c x86/apic/es7000+summit: Always make valid apicid from a cpumask 2012-06-14 12:53:15 +02:00
x2apic_cluster.c x86/apic/x2apic: Limit the vector reservation to the user specified mask 2012-07-06 11:00:22 +02:00
x2apic_phys.c x86/apic: Eliminate cpu_mask_to_apicid() operation 2012-06-14 12:53:13 +02:00
x2apic_uv_x.c x86/apic: Fix ugly casting and branching in cpu_mask_to_apicid_and() 2012-06-14 12:53:14 +02:00