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The hotplug testing only tries reading a trace remote buffer, loaded before a CPU is offline. Extend this testing to cover: * A trace remote buffer loaded after a CPU is offline. * A trace remote buffer loaded before a CPU is online. Because of these added test cases, move the hotplug testing into a separate hotplug.tc file. Acked-by: Steven Rostedt (Google) <rostedt@goodmis.org> Signed-off-by: Vincent Donnefort <vdonnefort@google.com> Link: https://patch.msgid.link/20260401045100.3394299-3-vdonnefort@google.com Signed-off-by: Marc Zyngier <maz@kernel.org>
100 lines
1.7 KiB
Plaintext
100 lines
1.7 KiB
Plaintext
# SPDX-License-Identifier: GPL-2.0
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setup_remote()
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{
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local name=$1
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[ -e $TRACING_DIR/remotes/$name/write_event ] || exit_unresolved
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cd remotes/$name/
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echo 0 > tracing_on
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clear_trace
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echo 7 > buffer_size_kb
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echo 0 > events/enable
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echo 1 > events/$name/selftest/enable
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echo 1 > tracing_on
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}
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setup_remote_test()
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{
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[ -d $TRACING_DIR/remotes/test/ ] || modprobe remote_test || exit_unresolved
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setup_remote "test"
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}
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assert_loaded()
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{
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grep -q "(loaded)" buffer_size_kb || return 1
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}
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assert_unloaded()
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{
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grep -q "(unloaded)" buffer_size_kb || return 1
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}
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reload_remote()
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{
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echo 0 > tracing_on
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clear_trace
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assert_unloaded
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echo 1 > tracing_on
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assert_loaded
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}
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dump_trace_pipe()
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{
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output=$(mktemp $TMPDIR/remote_test.XXXXXX)
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cat trace_pipe > $output &
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pid=$!
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sleep 1
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kill -1 $pid
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echo $output
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}
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check_trace()
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{
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start_id="$1"
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end_id="$2"
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file="$3"
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# Ensure the file is not empty
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test -n "$(head $file)"
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prev_ts=0
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id=0
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# Only keep <timestamp> <id>
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tmp=$(mktemp $TMPDIR/remote_test.XXXXXX)
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sed -e 's/\[[0-9]*\]\s*\([0-9]*.[0-9]*\): [a-z]* id=\([0-9]*\)/\1 \2/' $file > $tmp
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while IFS= read -r line; do
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ts=$(echo $line | cut -d ' ' -f 1)
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id=$(echo $line | cut -d ' ' -f 2)
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test $(echo "$ts>$prev_ts" | bc) -eq 1
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test $id -eq $start_id
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prev_ts=$ts
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start_id=$((start_id + 1))
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done < $tmp
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test $id -eq $end_id
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rm $tmp
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}
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get_cpu_ids()
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{
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sed -n 's/^processor\s*:\s*\([0-9]\+\).*/\1/p' /proc/cpuinfo
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}
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get_page_size()
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{
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sed -ne 's/^.*data.*size:\([0-9][0-9]*\).*/\1/p' events/header_page
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}
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get_selftest_event_size()
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{
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sed -ne 's/^.*field:.*;.*size:\([0-9][0-9]*\);.*/\1/p' events/*/selftest/format | awk '{s+=$1} END {print s}'
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}
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