diff options
| author | Yinghai Lu <yinghai@kernel.org> | 2008-12-11 00:15:01 -0800 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-12-17 00:14:01 +0100 |
| commit | 48a1b10aff588833b73994704c47bbd0deb73e9c (patch) | |
| tree | deb3c7b486346c3afa54014b3c3516344c2708f2 /arch/x86/Kconfig | |
| parent | 13bd41bc227a48d6cf8992a3286bf6eba3c71a0c (diff) | |
| download | blackbird-obmc-linux-48a1b10aff588833b73994704c47bbd0deb73e9c.tar.gz blackbird-obmc-linux-48a1b10aff588833b73994704c47bbd0deb73e9c.zip | |
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/Kconfig | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig index 8943c13502c6..29073532f94c 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 |
