103 lines
1.9 KiB
Bash
103 lines
1.9 KiB
Bash
#!/bin/sh
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# SPDX-License-Identifier: GPL-2.0
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# description: Test trace remote consuming read
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# requires: remotes/test
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. $TEST_DIR/remotes/functions
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test_trace_pipe()
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{
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echo 0 > tracing_on
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assert_unloaded
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# Emit events from the same CPU
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for cpu in $(get_cpu_ids); do
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break
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done
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#
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# Simple test: Emit enough events to fill few pages
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#
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echo 1024 > buffer_size_kb
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echo 1 > tracing_on
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assert_loaded
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events_per_page=$(($(get_page_size) / $(get_selftest_event_size)))
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nr_events=$(($events_per_page * 4))
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output=$(mktemp $TMPDIR/remote_test.XXXXXX)
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cat trace_pipe > $output &
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pid=$!
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for i in $(seq 1 $nr_events); do
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taskset -c $cpu echo $i > write_event
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done
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echo 0 > tracing_on
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sleep 1
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kill $pid
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check_trace 1 $nr_events $output
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rm $output
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#
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# Test interaction with lost events
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#
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assert_unloaded
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echo 7 > buffer_size_kb
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echo 1 > tracing_on
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assert_loaded
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nr_events=$((events_per_page * 2))
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for i in $(seq 1 $nr_events); do
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taskset -c $cpu echo $i > write_event
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done
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output=$(dump_trace_pipe)
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lost_events=$(sed -n -e '1s/CPU:.*\[LOST \([0-9]*\) EVENTS\]/\1/p' $output)
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test -n "$lost_events"
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id=$(sed -n -e '2s/\[[0-9]*\]\s*[0-9]*.[0-9]*: [a-z]* id=\([0-9]*\)/\1/p' $output)
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test "$id" -eq $(($lost_events + 1))
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# Drop [LOST EVENTS] line
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sed -i '1d' $output
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check_trace $id $nr_events $output
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rm $output
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#
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# Test per-CPU interface
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#
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echo 0 > trace
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echo 1 > tracing_on
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for cpu in $(get_cpu_ids); do
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taskset -c $cpu echo $cpu > write_event
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done
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for cpu in $(get_cpu_ids); do
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cd per_cpu/cpu$cpu/
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output=$(dump_trace_pipe)
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check_trace $cpu $cpu $output
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rm $output
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cd - > /dev/null
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done
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}
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if [ -z "$SOURCE_REMOTE_TEST" ]; then
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set -e
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setup_remote_test
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test_trace_pipe
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fi
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