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$ perf test -vv "DWARF callchain" 87: perf inject to convert DWARF callchains to regular ones: --- start --- test child forked, pid 1560328 recording data with DWARF callchain [ perf record: Woken up 4 times to write data ] [ perf record: Captured and wrote 0.908 MB /tmp/perf-test.nM3WoW (105 samples) ] convert DWARF callchain using perf inject compare the both result excluding inlined functions ---- end(0) ---- 87: perf inject to convert DWARF callchains to regular ones : Ok $ Reviewed-by: Ian Rogers <irogers@google.com> Signed-off-by: Namhyung Kim <namhyung@kernel.org> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: James Clark <james.clark@linaro.org> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
46 lines
1.1 KiB
Bash
Executable File
46 lines
1.1 KiB
Bash
Executable File
#!/bin/bash
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# perf inject to convert DWARF callchains to regular ones
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# SPDX-License-Identifier: GPL-2.0
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if ! perf check feature -q dwarf; then
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echo "SKIP: DWARF support is not available"
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exit 2
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fi
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TESTDATA=$(mktemp /tmp/perf-test.XXXXXX)
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err=0
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cleanup()
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{
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trap - EXIT TERM INT
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rm -f ${TESTDATA}*
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}
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trap_cleanup()
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{
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cleanup
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exit 1
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}
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trap trap_cleanup EXIT TERM INT
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echo "recording data with DWARF callchain"
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perf record -F 999 --call-graph dwarf -o "${TESTDATA}" -- perf test -w noploop
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echo "convert DWARF callchain using perf inject"
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perf inject -i "${TESTDATA}" --convert-callchain -o "${TESTDATA}.new"
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perf report -i "${TESTDATA}" --no-children -q --percent-limit=1 > ${TESTDATA}.out
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perf report -i "${TESTDATA}.new" --no-children -q --percent-limit=1 > ${TESTDATA}.new.out
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echo "compare the both result excluding inlined functions"
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if diff -u "${TESTDATA}.out" "${TESTDATA}.new.out" | grep "^- " | grep -qv "(inlined)"; then
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echo "Found some differences"
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diff -u "${TESTDATA}.out" "${TESTDATA}.new.out"
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err=1
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fi
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cleanup
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exit $err
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