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d89c58068a
The previous commit that introduced this test overlooked a behavior of
"perf test list", causing it to print "SPDX-License-Identifier: GPL-2.0"
as a description for that test. This reorders the comments to fix that
issue.
Fixes: edf2cadf01 ("perf test: add test for BPF metadata collection")
Signed-off-by: Blake Jones <blakejones@google.com>
Reviewed-by: Ian Rogers <irogers@google.com>
Link: https://lore.kernel.org/r/20250726004023.3466563-1-blakejones@google.com
[ update the commit message a little bit ]
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
76 lines
1.6 KiB
Bash
Executable file
76 lines
1.6 KiB
Bash
Executable file
#!/bin/bash
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# BPF metadata collection test
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#
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# SPDX-License-Identifier: GPL-2.0
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set -e
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err=0
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perfdata=$(mktemp /tmp/__perf_test.perf.data.XXXXX)
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cleanup() {
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rm -f "${perfdata}"
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rm -f "${perfdata}".old
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trap - EXIT TERM INT
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}
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trap_cleanup() {
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cleanup
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exit 1
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}
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trap trap_cleanup EXIT TERM INT
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test_bpf_metadata() {
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echo "Checking BPF metadata collection"
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if ! perf check -q feature libbpf-strings ; then
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echo "Basic BPF metadata test [skipping - not supported]"
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err=0
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return
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fi
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# This is a basic invocation of perf record
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# that invokes the perf_sample_filter BPF program.
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if ! perf record -e task-clock --filter 'ip > 0' \
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-o "${perfdata}" sleep 1 2> /dev/null
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then
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echo "Basic BPF metadata test [Failed record]"
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err=1
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return
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fi
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# The BPF programs that ship with "perf" all have the following
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# variable defined at compile time:
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#
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# const char bpf_metadata_perf_version[] SEC(".rodata") = <...>;
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#
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# This invocation looks for a PERF_RECORD_BPF_METADATA event,
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# and checks that its content contains the string given by
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# "perf version".
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VERS=$(perf version | awk '{print $NF}')
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if ! perf script --show-bpf-events -i "${perfdata}" | awk '
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/PERF_RECORD_BPF_METADATA.*perf_sample_filter/ {
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header = 1;
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}
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/^ *entry/ {
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if (header) { header = 0; entry = 1; }
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}
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$0 !~ /^ *entry/ {
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entry = 0;
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}
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/perf_version/ {
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if (entry) print $NF;
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}
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' | egrep "$VERS" > /dev/null
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then
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echo "Basic BPF metadata test [Failed invalid output]"
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err=1
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return
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fi
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echo "Basic BPF metadata test [Success]"
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}
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test_bpf_metadata
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cleanup
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exit $err
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