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|
#!/bin/bash
#
# Library with some functions for writing block layer tests using the
# ktest framework.
#
. $(dirname $(readlink -e ${BASH_SOURCE[0]}))/prelude.sh
. $(dirname $(readlink -e ${BASH_SOURCE[0]}))/kconfig.sh
config-mem 4G
(($ktest_cpus > 16)) && ktest_cpus=16
# Usage:
# setup_tracing tracepoint_glob
setup_tracing()
{
local t=/sys/kernel/tracing
echo > "$t"/trace
echo 8192 > "$t"/buffer_size_kb
echo $@ > "$t"/set_event
echo trace_printk > "$t"/trace_options
#echo stacktrace > "$t"/trace_options
echo 1 > "$t"/options/overwrite
echo 1 > "$t"/tracing_on
#echo 1 > /proc/sys/kernel/ftrace_dump_on_oops
}
# Fault injection
set_faults()
{
f=/sys/kernel/debug/dynamic_fault/control
if [[ -f $f ]]; then
echo "$@" > $f
fi
}
enable_memory_faults()
{
set_faults "class memory frequency 100"
}
disable_memory_faults()
{
set_faults "class memory disable"
}
enable_race_faults()
{
set_faults "class race frequency 1000"
}
disable_race_faults()
{
set_faults "class race disable"
}
enable_faults()
{
enable_memory_faults
enable_race_faults
}
disable_faults()
{
disable_race_faults
disable_memory_faults
}
# Generic test antagonists
antagonist_sync()
{
while true; do
sync
sleep 0.5
done
}
antagonist_drop_caches()
{
echo 4 > /proc/sys/vm/drop_caches
while true; do
echo 3 > /proc/sys/vm/drop_caches
sleep 5
done
}
stress_timeout()
{
echo $((($ktest_priority + 3) * 600))
}
call_base_test()
{
fname=$(basename ${BASH_SOURCE[2]})
fname=${fname#$1-}
shift
. $(dirname $(readlink -e ${BASH_SOURCE[2]}))/$fname
}
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