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authorYinghai Lu <yinghai@kernel.org>2008-12-11 00:15:01 -0800
committerIngo Molnar <mingo@elte.hu>2008-12-17 00:14:01 +0100
commit48a1b10aff588833b73994704c47bbd0deb73e9c (patch)
treedeb3c7b486346c3afa54014b3c3516344c2708f2 /arch/x86/Kconfig
parent13bd41bc227a48d6cf8992a3286bf6eba3c71a0c (diff)
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op-kernel-dev-48a1b10aff588833b73994704c47bbd0deb73e9c.tar.gz
x86, sparseirq: move irq_desc according to smp_affinity, v7
Impact: improve NUMA handling by migrating irq_desc on smp_affinity changes if CONFIG_NUMA_MIGRATE_IRQ_DESC is set: - make irq_desc to go with affinity aka irq_desc moving etc - call move_irq_desc in irq_complete_move() - legacy irq_desc is not moved, because they are allocated via static array for logical apic mode, need to add move_desc_in_progress_in_same_domain, otherwise it will not be moved ==> also could need two phases to get irq_desc moved. Signed-off-by: Yinghai Lu <yinghai@kernel.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/x86/Kconfig')
-rw-r--r--arch/x86/Kconfig9
1 files changed, 9 insertions, 0 deletions
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index 8943c13..2907353 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -248,6 +248,15 @@ config SPARSE_IRQ
If you don't know what to do here, say Y.
+config NUMA_MIGRATE_IRQ_DESC
+ bool "Move irq desc when changing irq smp_affinity"
+ depends on SPARSE_IRQ && SMP
+ default n
+ help
+ This enables moving irq_desc to cpu/node that irq will use handled.
+
+ If you don't know what to do here, say N.
+
config X86_FIND_SMP_CONFIG
def_bool y
depends on X86_MPPARSE || X86_VOYAGER
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