path: root/Documentation
diff options
authorThomas Gleixner <tglx@linutronix.de>2012-05-25 16:59:47 +0200
committerJon Medhurst <tixy@linaro.org>2013-07-17 11:12:18 +0100
commit1dfb365825bf076bc089b8198667c384a8ab89d4 (patch)
tree55033a93c129563b2fceb7cb4efee3fd3fcee8a2 /Documentation
parent8bb495e3f02401ee6f76d1b1d77f3ac9f079e376 (diff)
genirq: Add default affinity mask command line option
If we isolate CPUs, then we don't want random device interrupts on them. Even w/o the user space irq balancer enabled we can end up with irqs on non boot cpus. Allow to restrict the default irq affinity mask. Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'Documentation')
1 files changed, 9 insertions, 0 deletions
diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
index 2fe6e767b3d..a2a5f4111a3 100644
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation/kernel-parameters.txt
@@ -1240,6 +1240,15 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
See comment before ip2_setup() in
+ irqaffinity= [SMP] Set the default irq affinity mask
+ Format:
+ <cpu number>,...,<cpu number>
+ or
+ <cpu number>-<cpu number>
+ (must be a positive range in ascending order)
+ or a mixture
+ <cpu number>,...,<cpu number>-<cpu number>
irqfixup [HW]
When an interrupt is not handled search all handlers
for it. Intended to get systems with badly broken