1097b38fb7
Add a test for system-wide side band even when tracing selected CPUs. The test fails before the patches up to "perf tools: Allow system-wide events to keep their own CPUs" are applied, passes afterwards. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Tested-by: Ian Rogers <irogers@google.com> Acked-by: Ian Rogers <irogers@google.com> Acked-by: Namhyung Kim <namhyung@kernel.org> Cc: Alexey Bayduraev <alexey.v.bayduraev@linux.intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Leo Yan <leo.yan@linaro.org> Link: https://lore.kernel.org/r/20220524075436.29144-2-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
71 lines
1.3 KiB
Bash
Executable file
71 lines
1.3 KiB
Bash
Executable file
#!/bin/sh
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# Miscellaneous Intel PT testing
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# SPDX-License-Identifier: GPL-2.0
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set -e
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# Skip if no Intel PT
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perf list | grep -q 'intel_pt//' || exit 2
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skip_cnt=0
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ok_cnt=0
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err_cnt=0
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tmpfile=`mktemp`
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perfdatafile=`mktemp`
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can_cpu_wide()
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{
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perf record -o ${tmpfile} -B -N --no-bpf-event -e dummy:u -C $1 true 2>&1 >/dev/null || return 2
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return 0
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}
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test_system_wide_side_band()
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{
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# Need CPU 0 and CPU 1
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can_cpu_wide 0 || return $?
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can_cpu_wide 1 || return $?
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# Record on CPU 0 a task running on CPU 1
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perf record -B -N --no-bpf-event -o ${perfdatafile} -e intel_pt//u -C 0 -- taskset --cpu-list 1 uname
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# Should get MMAP events from CPU 1 because they can be needed to decode
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mmap_cnt=`perf script -i ${perfdatafile} --no-itrace --show-mmap-events -C 1 2>/dev/null | grep MMAP | wc -l`
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if [ ${mmap_cnt} -gt 0 ] ; then
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return 0
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fi
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echo "Failed to record MMAP events on CPU 1 when tracing CPU 0"
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return 1
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}
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count_result()
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{
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if [ $1 -eq 2 ] ; then
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skip_cnt=`expr ${skip_cnt} \+ 1`
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return
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fi
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if [ $1 -eq 0 ] ; then
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ok_cnt=`expr ${ok_cnt} \+ 1`
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return
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fi
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err_cnt=`expr ${err_cnt} \+ 1`
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}
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test_system_wide_side_band
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count_result $?
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rm -f ${tmpfile}
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rm -f ${perfdatafile}
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if [ ${err_cnt} -gt 0 ] ; then
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exit 1
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fi
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if [ ${ok_cnt} -gt 0 ] ; then
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exit 0
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fi
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exit 2
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