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authorThomas Gleixner <tglx@linutronix.de>2011-12-14 00:03:49 (GMT)
committerScott Wood <scottwood@freescale.com>2014-05-14 18:38:46 (GMT)
commite8b6fb1229641f26058e37860a7a32fee453b736 (patch)
treee184a5081e75e2511b7168b796ee4dc4786e462f
parent0dadca92282071c72781ae48c07af0cbdd43b909 (diff)
downloadlinux-fsl-qoriq-e8b6fb1229641f26058e37860a7a32fee453b736.tar.xz
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/Kconfig2
-rw-r--r--lib/Kconfig1
2 files changed, 2 insertions, 1 deletions
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index 7a6b720..083ee96 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -820,7 +820,7 @@ config IOMMU_HELPER
config MAXSMP
bool "Enable Maximum number of SMP Processors and NUMA Nodes"
depends on X86_64 && SMP && DEBUG_KERNEL
- 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 c742a2d..eee9e09 100644
--- a/lib/Kconfig
+++ b/lib/Kconfig
@@ -344,6 +344,7 @@ 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