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|
#!/bin/sh
# PCP QA Test No. 1900
# Test bpf PMDA with valgrind.
#
# Copyright (c) 2022 Red Hat.
#
seq=`basename $0`
echo "QA output created by $seq"
# get standard environment, filters and checks
. ./common.product
. ./common.check
. ./common.bpf
_check_valgrind
_pmdabpf_check
valgrind --version | sed -e 's/valgrind-//' | awk -F. '$1 < 3 || ($1 == 3 && $2 < 19) {exit 1}' || \
_notrun "this test requires valgrind 3.19+"
status=1
cat <<EOF >$tmp.conf
# Installed by PCP QA test $seq on `date`
[biolatency.so]
enabled=true
[runqlat.so]
enabled=true
# no execsnoop.so for this test, thank you
EOF
_pmdabpf_tryload $tmp.conf
_cleanup()
{
cd $here
_pmdabpf_cleanup
$sudo rm -rf $tmp $tmp.*
}
trap "_cleanup; exit \$status" 0 1 2 3 15
_filter_logs()
{
# need sudo here because of _run_valgrind --sudo
$sudo tee -a $seq_full \
| sed \
-e '/ Debug: /d' \
-e '/ Info: /d' \
-e '/WARNING: unhandled eBPF command 28/d' \
-e '/WARNING: unhandled eBPF command 36/d' \
# end
}
cat >$tmp.suppress <<End-of-File
# The libbpf probes to test for whether the kernel supports certain features
# do not fully initialize the attr struct passed in the syscall.
# This is outside the control of PCP. There is an upstream libbpf issue filed:
#
# https://github.com/libbpf/libbpf/issues/845
{
libbpf missing attr missing expected_attach_type field initialization
Memcheck:Param
bpf(attr->expected_attach_type)
fun:syscall
...
}
{
libbpf missing attr missing prog_ifindex field initialization
Memcheck:Param
bpf(attr->prog_ifindex)
fun:syscall
...
}
End-of-File
# preliminaries ...
# - install bpf PMDA so we get bpf in the default PMNS
# - setup up a minimalist "works everywhere" bpf.conf
#
_prepare_pmda bpf
_pmdabpf_install $tmp.conf
_pmdabpf_wait_for_metric
pmda=$PCP_PMDAS_DIR/bpf/pmda_bpf,bpf_init
grind_extra="--suppressions=$tmp.suppress"
echo && echo "== Running pmdabpf with valgrind"
_run_valgrind --sudo pminfo -L -K clear -K add,157,$pmda -dmtT bpf.disk bpf.runq 2>&1 \
| _filter_logs
cd $here
for metric in bpf.disk.all.latency bpf.runq.latency
do
echo && echo "== Checking if metric $metric has any values"
_run_valgrind --sudo src/wait_for_values -L -K clear -K add,157,$pmda -w 10000 $metric 2>&1 \
| _filter_logs
done
# success, all done
status=0
exit
|
