58524e0fed
The rcutorture test suite makes double use of the rcutorture.stat_interval module parameter. As its name suggests, it controls the frequency of statistics printing, but it also controls the rcu_torture_writer() stall timeout. The current setting of 15 seconds works surprisingly well. However, given that the RCU tasks stall-warning timeout is ten -minutes-, 15 seconds is too short for TASKS02, which runs a non-preemptible kernel on a single CPU. This commit therefore adds checks for per-scenario specification of the rcutorture.stat_interval module parameter. Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
56 lines
1.5 KiB
Bash
56 lines
1.5 KiB
Bash
#!/bin/bash
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# SPDX-License-Identifier: GPL-2.0+
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#
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# Kernel-version-dependent shell functions for the rest of the scripts.
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#
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# Copyright (C) IBM Corporation, 2013
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#
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# Authors: Paul E. McKenney <paulmck@linux.ibm.com>
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# rcutorture_param_n_barrier_cbs bootparam-string
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#
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# Adds n_barrier_cbs rcutorture module parameter if not already specified.
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rcutorture_param_n_barrier_cbs () {
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if echo $1 | grep -q "rcutorture\.n_barrier_cbs"
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then
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:
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else
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echo rcutorture.n_barrier_cbs=4
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fi
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}
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# rcutorture_param_onoff bootparam-string config-file
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#
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# Adds onoff rcutorture module parameters to kernels having it.
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rcutorture_param_onoff () {
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if ! bootparam_hotplug_cpu "$1" && configfrag_hotplug_cpu "$2"
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then
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echo CPU-hotplug kernel, adding rcutorture onoff. 1>&2
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echo rcutorture.onoff_interval=1000 rcutorture.onoff_holdoff=30
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fi
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}
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# rcutorture_param_stat_interval bootparam-string
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#
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# Adds stat_interval rcutorture module parameter if not already specified.
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rcutorture_param_stat_interval () {
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if echo $1 | grep -q "rcutorture\.stat_interval"
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then
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:
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else
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echo rcutorture.stat_interval=15
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fi
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}
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# per_version_boot_params bootparam-string config-file seconds
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#
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# Adds per-version torture-module parameters to kernels supporting them.
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per_version_boot_params () {
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echo $1 `rcutorture_param_onoff "$1" "$2"` \
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`rcutorture_param_n_barrier_cbs "$1"` \
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`rcutorture_param_stat_interval "$1"` \
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rcutorture.shutdown_secs=$3 \
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rcutorture.test_no_idle_hz=1 \
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rcutorture.verbose=1
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}
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