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authorPaul E. McKenney <paulmck@linux.vnet.ibm.com>2017-04-26 01:12:56 +0300
committerPaul E. McKenney <paulmck@linux.vnet.ibm.com>2017-06-08 18:25:32 +0300
commit820687a7b98a5031207893ff265f97c0a0ad403e (patch)
tree7ca7ed37ea08413a9e36951ccbd50685ea55da20 /Documentation/admin-guide
parentb562b85c3a8c395d49aca6a46b321299d6e49ff1 (diff)
downloadlinux-820687a7b98a5031207893ff265f97c0a0ad403e.tar.xz
rcuperf: Add writer_holdoff boot parameter
This commit adds a writer_holdoff boot parameter to rcuperf, which is intended to be used to test Tree SRCU's auto-expediting. This boot parameter is in microseconds, and defaults to zero (that is, disabled). Set it to a bit larger than srcutree.exp_holdoff, keeping the nanosecond/microsecond conversion, to force Tree SRCU to auto-expedite more aggressively. This commit also adds documentation for this parameter, and fixes some alphabetization while in the neighborhood. 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.txt11
1 files changed, 8 insertions, 3 deletions
diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt
index 3598464ca8ed..01b5ab92d251 100644
--- a/Documentation/admin-guide/kernel-parameters.txt
+++ b/Documentation/admin-guide/kernel-parameters.txt
@@ -3357,17 +3357,22 @@
rcuperf.perf_runnable= [BOOT]
Start rcuperf running at boot time.
+ rcuperf.perf_type= [KNL]
+ Specify the RCU implementation to test.
+
rcuperf.shutdown= [KNL]
Shut the system down after performance tests
complete. This is useful for hands-off automated
testing.
- rcuperf.perf_type= [KNL]
- Specify the RCU implementation to test.
-
rcuperf.verbose= [KNL]
Enable additional printk() statements.
+ rcuperf.writer_holdoff= [KNL]
+ Write-side holdoff between grace periods,
+ in microseconds. The default of zero says
+ no holdoff.
+
rcutorture.cbflood_inter_holdoff= [KNL]
Set holdoff time (jiffies) between successive
callback-flood tests.