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https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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75e961730b
The test starts a backgroup thloop workload and monitors it using cpu-clock ensuring test_loop appears in the output. Signed-off-by: Ian Rogers <irogers@google.com> Signed-off-by: Namhyung Kim <namhyung@kernel.org>
75 lines
1.6 KiB
Bash
Executable File
75 lines
1.6 KiB
Bash
Executable File
#!/bin/bash
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# perf top tests
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# SPDX-License-Identifier: GPL-2.0
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set -e
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err=0
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log_file=$(mktemp /tmp/perf.top.log.XXXXX)
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cleanup() {
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rm -f "${log_file}"
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trap - EXIT TERM INT
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}
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trap_cleanup() {
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echo "Unexpected signal in ${FUNCNAME[1]}"
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cleanup
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exit 1
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}
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trap trap_cleanup EXIT TERM INT
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test_basic_perf_top() {
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echo "Basic perf top test"
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# Start a workload that spins to generate samples
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# thloop runs for the specified number of seconds
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perf test -w thloop 20 &
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PID=$!
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# Allow it to start
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sleep 0.1
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# Run perf top for 5 seconds, monitoring that PID
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# Use --stdio to avoid TUI and redirect output
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# Use -d 1 to avoid flooding output
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# Use -e cpu-clock to ensure we get samples
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# Use sleep to keep stdin open but silent, preventing EOF loop or interactive spam
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if ! sleep 10 | timeout 5s perf top --stdio -d 1 -e cpu-clock -p $PID > "${log_file}" 2>&1; then
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retval=$?
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if [ $retval -ne 124 ] && [ $retval -ne 0 ]; then
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echo "Basic perf top test [Failed: perf top failed to start or run (ret=$retval)]"
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head -n 50 "${log_file}"
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kill $PID
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wait $PID 2>/dev/null || true
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err=1
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return
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fi
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fi
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kill $PID
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wait $PID 2>/dev/null || true
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# Check for some sample data (percentage)
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if ! grep -E -q "[0-9]+\.[0-9]+%" "${log_file}"; then
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echo "Basic perf top test [Failed: no sample percentage found]"
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head -n 50 "${log_file}"
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err=1
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return
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fi
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# Check for the symbol
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if ! grep -q "test_loop" "${log_file}"; then
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echo "Basic perf top test [Failed: test_loop symbol not found]"
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head -n 50 "${log_file}"
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err=1
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return
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fi
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echo "Basic perf top test [Success]"
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}
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test_basic_perf_top
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cleanup
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exit $err
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