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authorPaul E. McKenney <paulmck@linux.vnet.ibm.com>2017-08-19 02:11:37 +0300
committerPaul E. McKenney <paulmck@linux.vnet.ibm.com>2017-10-10 00:26:08 +0300
commit2b1516e55f8416acfb48d5f43d41222d180fb5a3 (patch)
tree68d5e48d865b53a5551f721dbac11d55913d6879 /Documentation/admin-guide
parent8a5776a5f49812d29fe4b2d0a2d71675c3facf3f (diff)
downloadlinux-2b1516e55f8416acfb48d5f43d41222d180fb5a3.tar.xz
rcutorture: Add interrupt-disable capability to stall-warning tests
When rcutorture sees the rcutorture.stall_cpu kernel boot parameter, it loops with preemption disabled, which does in fact normally generate an RCU CPU stall warning message. However, there are test scenarios that need the stalling CPU to have interrupts disabled. This commit therefore adds an rcutorture.stall_cpu_irqsoff kernel boot parameter that causes the stalling CPU to disable interrupts. Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Diffstat (limited to 'Documentation/admin-guide')
-rw-r--r--Documentation/admin-guide/kernel-parameters.txt3
1 files changed, 3 insertions, 0 deletions
diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt
index 05496622b4ef..bc94c47085a5 100644
--- a/Documentation/admin-guide/kernel-parameters.txt
+++ b/Documentation/admin-guide/kernel-parameters.txt
@@ -3539,6 +3539,9 @@
rcutorture.stall_cpu_holdoff= [KNL]
Time to wait (s) after boot before inducing stall.
+ rcutorture.stall_cpu_irqsoff= [KNL]
+ Disable interrupts while stalling if set.
+
rcutorture.stat_interval= [KNL]
Time (s) between statistics printk()s.