fa423fe6d9
[ Upstream commitff16aeb9b8] The 2 second sleep can cause the test to fail on very slow network file systems because Perf ends up being killed before it finishes starting up. Fix it by making the leafloop workload end after a fixed time like the other workloads so there is no need to kill it after 2 seconds. Also remove the 1 second start sampling delay because it is similarly fragile. Instead, search through all samples for a matching one, rather than just checking the first sample and hoping it's in the right place. Fixes:cd6382d827("perf test arm64: Test unwinding using fame-pointer (fp) mode") Signed-off-by: James Clark <james.clark@arm.com> Acked-by: Namhyung Kim <namhyung@kernel.org> Cc: German Gomez <german.gomez@arm.com> Cc: Spoorthy S <spoorts2@in.ibm.com> Cc: Kajol Jain <kjain@linux.ibm.com> Signed-off-by: Namhyung Kim <namhyung@kernel.org> Link: https://lore.kernel.org/r/20240612140316.3006660-1-james.clark@arm.com Signed-off-by: Sasha Levin <sashal@kernel.org>
35 lines
913 B
Bash
Executable File
35 lines
913 B
Bash
Executable File
#!/bin/sh
|
|
# Check Arm64 callgraphs are complete in fp mode
|
|
# SPDX-License-Identifier: GPL-2.0
|
|
|
|
lscpu | grep -q "aarch64" || exit 2
|
|
|
|
PERF_DATA=$(mktemp /tmp/__perf_test.perf.data.XXXXX)
|
|
TEST_PROGRAM="perf test -w leafloop"
|
|
|
|
cleanup_files()
|
|
{
|
|
rm -f "$PERF_DATA"
|
|
}
|
|
|
|
trap cleanup_files EXIT TERM INT
|
|
|
|
# shellcheck disable=SC2086
|
|
perf record -o "$PERF_DATA" --call-graph fp -e cycles//u --user-callchains -- $TEST_PROGRAM
|
|
|
|
# Try opening the file so any immediate errors are visible in the log
|
|
perf script -i "$PERF_DATA" -F comm,ip,sym | head -n4
|
|
|
|
# expected perf-script output if 'leaf' has been inserted correctly:
|
|
#
|
|
# perf
|
|
# 728 leaf
|
|
# 753 parent
|
|
# 76c leafloop
|
|
# ... remaining stack to main() ...
|
|
|
|
# Each frame is separated by a tab, some spaces and an address
|
|
SEP="[[:space:]]+ [[:xdigit:]]+"
|
|
perf script -i "$PERF_DATA" -F comm,ip,sym | tr '\n' ' ' | \
|
|
grep -E -q "perf $SEP leaf $SEP parent $SEP leafloop"
|