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72d81e1062
The perf trace enum augmentation test specifically targets landlock_
add_rule syscall but IIUC it's an optional and can be opt-out by a
kernel config.
Currently trace_landlock() runs `perf test -w landlock` before the
actual testing to check the availability but it's not enough since the
workload always returns 0. Instead it could check if perf trace output
has 'landlock' string.
Fixes: d66763fed3 ("perf test trace_btf_enum: Add regression test for the BTF augmentation of enums in 'perf trace'")
Reviewed-by: Howard Chu <howardchu95@gmail.com>
Link: https://lore.kernel.org/r/20250128170629.1251574-1-namhyung@kernel.org
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
67 lines
1.3 KiB
Bash
Executable File
67 lines
1.3 KiB
Bash
Executable File
#!/bin/sh
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# perf trace enum augmentation tests
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# SPDX-License-Identifier: GPL-2.0
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err=0
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set -e
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syscall="landlock_add_rule"
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non_syscall="timer:hrtimer_init,timer:hrtimer_start"
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TESTPROG="perf test -w landlock"
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# shellcheck source=lib/probe.sh
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. "$(dirname $0)"/lib/probe.sh
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skip_if_no_perf_trace || exit 2
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check_vmlinux() {
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echo "Checking if vmlinux exists"
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if ! ls /sys/kernel/btf/vmlinux 1>/dev/null 2>&1
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then
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echo "trace+enum test [Skipped missing vmlinux BTF support]"
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err=2
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fi
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}
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trace_landlock() {
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echo "Tracing syscall ${syscall}"
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# test flight just to see if landlock_add_rule is available
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if ! perf trace $TESTPROG 2>&1 | grep -q landlock
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then
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echo "No landlock system call found, skipping to non-syscall tracing."
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return
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fi
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if perf trace -e $syscall $TESTPROG 2>&1 | \
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grep -q -E ".*landlock_add_rule\(ruleset_fd: 11, rule_type: (LANDLOCK_RULE_PATH_BENEATH|LANDLOCK_RULE_NET_PORT), rule_attr: 0x[a-f0-9]+, flags: 45\) = -1.*"
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then
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err=0
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else
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err=1
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fi
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}
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trace_non_syscall() {
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echo "Tracing non-syscall tracepoint ${non-syscall}"
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if perf trace -e $non_syscall --max-events=1 2>&1 | \
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grep -q -E '.*timer:hrtimer_.*\(.*mode: HRTIMER_MODE_.*\)$'
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then
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err=0
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else
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err=1
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fi
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}
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check_vmlinux
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if [ $err = 0 ]; then
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trace_landlock
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fi
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if [ $err = 0 ]; then
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trace_non_syscall
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fi
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exit $err
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