mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson
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1468479322
The annotate test was sped up by Thomas Richter
<tmricht@linux.ibm.com> in commit
658a8805cb ("perf test: Speed up test case 70 annotate basic tests")
by reducing the annotate output using head. This causes flakes on
hybrid machines where the first event dumped may not have the samples
for the test within it. Rather than reduce the output using `head`
switch to `--percent-limit 10` which will stop annotate dumping
functions that have an overhead of less than 10%, the noploop program
should be using more.
Add the missing objdump option for the pipe mode version of the
objdump with a command test.
Signed-off-by: Ian Rogers <irogers@google.com>
Tested-by: Thomas Richter <tmricht@linux.ibm.com>
Link: https://lore.kernel.org/r/20250628015832.1271229-1-irogers@google.com
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
114 lines
2.8 KiB
Bash
Executable File
114 lines
2.8 KiB
Bash
Executable File
#!/bin/bash
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# perf annotate basic tests
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# SPDX-License-Identifier: GPL-2.0
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set -e
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shelldir=$(dirname "$0")
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# shellcheck source=lib/perf_has_symbol.sh
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. "${shelldir}"/lib/perf_has_symbol.sh
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testsym="noploop"
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skip_test_missing_symbol ${testsym}
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err=0
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perfdata=$(mktemp /tmp/__perf_test.perf.data.XXXXX)
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perfout=$(mktemp /tmp/__perf_test.perf.out.XXXXX)
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testprog="perf test -w noploop"
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# disassembly format: "percent : offset: instruction (operands ...)"
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disasm_regex="[0-9]*\.[0-9]* *: *\w*: *\w*"
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cleanup() {
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rm -rf "${perfdata}" "${perfout}"
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rm -rf "${perfdata}".old
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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() {
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mode=$1
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echo "${mode} perf annotate test"
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if [ "x${mode}" == "xBasic" ]
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then
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perf record -o "${perfdata}" ${testprog} 2> /dev/null
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else
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perf record -o - ${testprog} 2> /dev/null > "${perfdata}"
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fi
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if [ "x$?" != "x0" ]
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then
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echo "${mode} annotate [Failed: perf record]"
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err=1
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return
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fi
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# Generate the annotated output file
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if [ "x${mode}" == "xBasic" ]
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then
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perf annotate --no-demangle -i "${perfdata}" --stdio --percent-limit 10 2> /dev/null > "${perfout}"
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else
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perf annotate --no-demangle -i - --stdio 2> /dev/null --percent-limit 10 < "${perfdata}" > "${perfout}"
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fi
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# check if it has the target symbol
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if ! grep -q "${testsym}" "${perfout}"
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then
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echo "${mode} annotate [Failed: missing target symbol]"
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cat "${perfout}"
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err=1
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return
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fi
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# check if it has the disassembly lines
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if ! grep -q "${disasm_regex}" "${perfout}"
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then
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echo "${mode} annotate [Failed: missing disasm output from default disassembler]"
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err=1
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return
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fi
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# check again with a target symbol name
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if [ "x${mode}" == "xBasic" ]
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then
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perf annotate --no-demangle -i "${perfdata}" "${testsym}" 2> /dev/null > "${perfout}"
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else
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perf annotate --no-demangle -i - "${testsym}" 2> /dev/null < "${perfdata}" > "${perfout}"
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fi
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if ! head -250 "${perfout}"| grep -q -m 3 "${disasm_regex}"
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then
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echo "${mode} annotate [Failed: missing disasm output when specifying the target symbol]"
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err=1
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return
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fi
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# check one more with external objdump tool (forced by --objdump option)
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if [ "x${mode}" == "xBasic" ]
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then
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perf annotate --no-demangle -i "${perfdata}" --percent-limit 10 --objdump=objdump 2> /dev/null > "${perfout}"
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else
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perf annotate --no-demangle -i - "${testsym}" --percent-limit 10 --objdump=objdump 2> /dev/null < "${perfdata}" > "${perfout}"
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fi
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if ! grep -q -m 3 "${disasm_regex}" "${perfout}"
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then
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echo "${mode} annotate [Failed: missing disasm output from non default disassembler (using --objdump)]"
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err=1
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return
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fi
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echo "${mode} annotate test [Success]"
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}
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test_basic Basic
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test_basic Pipe
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cleanup
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exit $err
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