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2f5d370dec
There are 43 instances of posix shell tests and 35 instances of bash. To give us a single consistent language for testing in, replace all #!/bin/sh to #!/bin/bash. Common sources that are included in both different shells will now work as expected. And we no longer have to fix up bashisms that appear to work when someone's system has sh symlinked to bash, but don't work on other systems that have both shells installed. Although we could have chosen sh, it's not backwards compatible so it wouldn't be possible to bulk convert without re-writing the existing bash tests. Choosing bash also gives us some nicer features including 'local' variable definitions and regexes in if statements that are already widely used in the tests. It's not expected that there are any users with only sh available due to the large number of bash tests that exist. Discussed in relation to running shellcheck here: https://lore.kernel.org/linux-perf-users/e3751a74be34bbf3781c4644f518702a7270220b.1749785642.git.collin.funk1@gmail.com/ Signed-off-by: James Clark <james.clark@linaro.org> Reviewed-by: Collin Funk <collin.funk1@gmail.com> Acked-by: Arnaldo Carvalho de Melo <acme@redhat.com> Link: https://lore.kernel.org/r/20250623-james-perf-bash-tests-v1-1-f572f54d4559@linaro.org Signed-off-by: Namhyung Kim <namhyung@kernel.org>
86 lines
2.2 KiB
Bash
Executable file
86 lines
2.2 KiB
Bash
Executable file
#!/bin/bash
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# perf ftrace tests
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# SPDX-License-Identifier: GPL-2.0
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set -e
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# perf ftrace commands only works for root
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if [ "$(id -u)" != 0 ]; then
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echo "perf ftrace test [Skipped: no permission]"
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exit 2
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fi
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output=$(mktemp /tmp/__perf_test.ftrace.XXXXXX)
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cleanup() {
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rm -f "${output}"
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trap - EXIT TERM INT
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}
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trap_cleanup() {
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cleanup
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exit 1
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}
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trap trap_cleanup EXIT TERM INT
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# this will be set in test_ftrace_trace()
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target_function=
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test_ftrace_list() {
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echo "perf ftrace list test"
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perf ftrace -F > "${output}"
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# this will be used in test_ftrace_trace()
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sleep_functions=$(grep 'sys_.*sleep$' "${output}")
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echo "syscalls for sleep:"
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echo "${sleep_functions}"
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echo "perf ftrace list test [Success]"
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}
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test_ftrace_trace() {
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echo "perf ftrace trace test"
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perf ftrace trace --graph-opts depth=5 sleep 0.1 > "${output}"
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# it should have some function name contains 'sleep'
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grep "^#" "${output}"
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grep -F 'sleep()' "${output}"
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# find actual syscall function name
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for FN in ${sleep_functions}; do
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if grep -q "${FN}" "${output}"; then
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target_function="${FN}"
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echo "perf ftrace trace test [Success]"
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return
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fi
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done
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echo "perf ftrace trace test [Failure: sleep syscall not found]"
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exit 1
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}
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test_ftrace_latency() {
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echo "perf ftrace latency test"
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echo "target function: ${target_function}"
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perf ftrace latency -T "${target_function}" sleep 0.1 > "${output}"
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grep "^#" "${output}"
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grep "###" "${output}"
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echo "perf ftrace latency test [Success]"
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}
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test_ftrace_profile() {
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echo "perf ftrace profile test"
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perf ftrace profile --graph-opts depth=5 sleep 0.1 > "${output}"
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grep ^# "${output}"
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time_re="[[:space:]]+1[[:digit:]]{5}\.[[:digit:]]{3}"
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# 100283.000 100283.000 100283.000 1 __x64_sys_clock_nanosleep
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# Check for one *clock_nanosleep line with a Count of just 1 that takes a bit more than 0.1 seconds
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# Strip the _x64_sys part to work with other architectures
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grep -E "^${time_re}${time_re}${time_re}[[:space:]]+1[[:space:]]+.*clock_nanosleep" "${output}"
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echo "perf ftrace profile test [Success]"
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}
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test_ftrace_list
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test_ftrace_trace
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test_ftrace_latency
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test_ftrace_profile
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cleanup
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exit 0
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