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authorYinghai Lu <yinghai@kernel.org>2009-04-16 05:39:13 +0400
committerIngo Molnar <mingo@elte.hu>2009-04-17 05:20:01 +0400
commitca713c2ab0eea3458962983e4a7e13430ea479b8 (patch)
tree4bd77472e09216dcb0911efcdf1c5e8ed6ab6748 /arch/x86/Kconfig
parent6ec3cfeca04622e3d80c9270191cd7f5f88214af (diff)
downloadlinux-ca713c2ab0eea3458962983e4a7e13430ea479b8.tar.xz
x86/irq: mark NUMA_MIGRATE_IRQ_DESC broken
It causes crash on system with lots of cards with MSI-X when irq_balancer enabled... The patches fixing it were both complex and fragile, according to Eric they were also doing quite dangerous things to the hardware. Instead we now have patches that solve this problem via static NUMA node mappings - not dynamic allocation and balancing. The patches are much simpler than this method but are still too large outside of the merge window, so we mark the dynamic balancer as broken for now, and queue up the new approach for v2.6.31. [ Impact: deactivate broken kernel feature ] Reported-by: Suresh Siddha <suresh.b.siddha@intel.com> Signed-off-by: Yinghai Lu <yinghai@kernel.org> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: "Eric W. Biederman" <ebiederm@xmission.com> Cc: Rusty Russell <rusty@rustcorp.com.au> LKML-Reference: <49E68C41.4020801@kernel.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/x86/Kconfig')
-rw-r--r--arch/x86/Kconfig1
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index bc25b9f5e4cd..b1d2be7d91a0 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -277,6 +277,7 @@ config SPARSE_IRQ
config NUMA_MIGRATE_IRQ_DESC
bool "Move irq desc when changing irq smp_affinity"
depends on SPARSE_IRQ && NUMA
+ depends on BROKEN
default n
---help---
This enables moving irq_desc to cpu/node that irq will use handled.