diff options
| author | Thomas Gleixner <tglx@linutronix.de> | 2011-12-14 01:03:49 +0100 |
|---|---|---|
| committer | Clark Williams <williams@redhat.com> | 2012-04-11 11:07:53 -0500 |
| commit | 942693abe74c964f737e8f4d5dab56a62f8f72ac (patch) | |
| tree | b8377837f647ca09e8266d72c9d787998d935bac | |
| parent | 6d90d43d64d00372239708c754620ad32b23b086 (diff) | |
cpumask: Disable CONFIG_CPUMASK_OFFSTACK for RT
We can't deal with the cpumask allocations which happen in atomic
context (see arch/x86/kernel/apic/io_apic.c) on RT right now.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
| -rw-r--r-- | arch/x86/Kconfig | 2 | ||||
| -rw-r--r-- | lib/Kconfig | 1 |
2 files changed, 2 insertions, 1 deletions
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig index 0b3c720ce9b3..70a97c33163b 100644 --- a/arch/x86/Kconfig +++ b/arch/x86/Kconfig @@ -750,7 +750,7 @@ config IOMMU_HELPER config MAXSMP bool "Enable Maximum number of SMP Processors and NUMA Nodes" depends on X86_64 && SMP && DEBUG_KERNEL && EXPERIMENTAL - select CPUMASK_OFFSTACK + select CPUMASK_OFFSTACK if !PREEMPT_RT_FULL ---help--- Enable maximum number of CPUS and NUMA Nodes for this architecture. If unsure, say N. diff --git a/lib/Kconfig b/lib/Kconfig index 4a8aba2e5cc0..4c03fe3b7b1b 100644 --- a/lib/Kconfig +++ b/lib/Kconfig @@ -303,6 +303,7 @@ config CHECK_SIGNATURE config CPUMASK_OFFSTACK bool "Force CPU masks off stack" if DEBUG_PER_CPU_MAPS + depends on !PREEMPT_RT_FULL help Use dynamic allocation for cpumask_var_t, instead of putting them on the stack. This is a bit more expensive, but avoids |