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| author | Thomas Gleixner <tglx@linutronix.de> | 2011-12-14 01:03:49 +0100 |
|---|---|---|
| committer | Sebastian Andrzej Siewior <bigeasy@linutronix.de> | 2016-02-13 00:36:30 +0100 |
| commit | 6b83097be85c5de4112ea2b354997c31dcbba632 (patch) | |
| tree | cdb19ceb4b0498e071b8bc134c43d26d15a0c33c | |
| parent | b252ef5826bbd88a7ca6806ddca3d9002b556baa (diff) | |
| download | rt-linux-6b83097be85c5de4112ea2b354997c31dcbba632.tar.gz | |
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 a2d6e332461b09..1ef9f1829845b1 100644 --- a/arch/x86/Kconfig +++ b/arch/x86/Kconfig @@ -851,7 +851,7 @@ 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 f0df318104e727..77ff6451ad3f5c 100644 --- a/lib/Kconfig +++ b/lib/Kconfig @@ -395,6 +395,7 @@ 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 |