We can use exit snapshot to limit the amount of trace to decode here too. Also each call to objdump is quite expensive on kcore so limit it to 2 samples instead of 30. We only want to see if there is no data at all.
Reviewed-by: Leo Yan leo.yan@arm.com Signed-off-by: James Clark james.clark@linaro.org --- tools/perf/tests/shell/test_arm_coresight_disasm.sh | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/tools/perf/tests/shell/test_arm_coresight_disasm.sh b/tools/perf/tests/shell/test_arm_coresight_disasm.sh index f78dfb6bf73e..f2fb1aa92252 100755 --- a/tools/perf/tests/shell/test_arm_coresight_disasm.sh +++ b/tools/perf/tests/shell/test_arm_coresight_disasm.sh @@ -43,9 +43,9 @@ branch_search='[[:space:]](bl|b(.(eq|ne|cs|cc|mi|pl|vs|vc|hi|ls|ge|lt|gt|le|al) ## Test kernel ## if [ "$(id -u)" == 0 ] && [ -e /proc/kcore ]; then echo "Testing kernel disassembly" - perf record -o ${perfdata} -e cs_etm//k --kcore -- touch $file > /dev/null 2>&1 + perf record -o ${perfdata} -e cs_etm//k --kcore -Se -m,64K -- touch $file > /dev/null 2>&1 perf script -i ${perfdata} -s python:${script_path} -- \ - -d --stop-sample=30 -k ${perfdata}/kcore_dir/kcore 2> /dev/null > ${file} + -d --stop-sample=2 -k ${perfdata}/kcore_dir/kcore 2> /dev/null > ${file} grep -q -E ${branch_search} ${file} echo "Found kernel branches" else @@ -55,9 +55,9 @@ fi
## Test user ## echo "Testing userspace disassembly" -perf record -o ${perfdata} -e cs_etm//u -- touch $file > /dev/null 2>&1 +perf record -o ${perfdata} -e cs_etm//u -Se -m,64K -- touch $file > /dev/null 2>&1 perf script -i ${perfdata} -s python:${script_path} -- \ - -d --stop-sample=30 2> /dev/null > ${file} + -d --stop-sample=2 2> /dev/null > ${file} grep -q -E ${branch_search} ${file} echo "Found userspace branches"