scx-upstream/meson-scripts/test_sched
Andrea Righi 67a53ba621 ci: detect errors only from stderr
Search for potential errors only in the kernel logs and the scheduler
stderr.

In this way we can use "error keywords" in the scheduler's output
without triggering false positives in the CI (see for example #127).

NOTE: this works, because virtme-ng, when executed in verbose mode,
sends the kernel messages to stderr (together with the command's stderr)
and it channels the command's stdout to the stdout of the host.

Signed-off-by: Andrea Righi <andrea.righi@canonical.com>
2024-02-05 17:59:11 +01:00

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#!/bin/bash
#
# Run a scheduler for TIMEOUT seconds inside virtme-ng and catch potential
# errors, then unload the scheduler and return the exit status.
# Maximum time for each scheduler run.
TEST_TIMEOUT=30
# Maximum timeout for the guest used for each scheduler run (this is used to
# hard-shutdown the guest in case of system hangs).
GUEST_TIMEOUT=60
# List of schedulers to test
#
# TODO:
# - scx_layered: temporarily excluded because it
# cannot run with a default configuration
#
SCHEDULERS="scx_simple scx_central scx_flatcg scx_nest scx_pair scx_qmap scx_userland scx_rusty scx_rustland"
if [ ! -x `which vng` ]; then
echo "vng not found, please install virtme-ng to enable testing"
exit 1
fi
if [ $# -lt 1 ]; then
echo "Usage: $0 VMLINUZ"
exit 1
fi
kernel=$1
for sched in ${SCHEDULERS}; do
sched_path=$(find -type f -executable -name ${sched})
if [ ! -n "${sched_path}" ]; then
echo "${sched}: binary not found"
echo "FAIL: ${sched}"
exit 1
fi
echo "testing ${sched_path}"
rm -f /tmp/output
timeout --preserve-status ${GUEST_TIMEOUT} \
vng --force-9p --disable-microvm -v -r ${kernel} -- \
"timeout --foreground --preserve-status ${TEST_TIMEOUT} ${sched_path}" \
2> >(tee /tmp/output) </dev/null
sed -n -e '/\bBUG:/q1' \
-e '/\bWARNING:/q1' \
-e '/\berror\b/Iq1' \
-e '/\bstall/Iq1' \
-e '/\btimeout\b/Iq1' /tmp/output
res=$?
if [ ${res} -ne 0 ]; then
echo "FAIL: ${sched}"
exit 1
else
echo "OK: ${sched}"
fi
done