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Trace the non-syscall tracepoint 'timer:hrtimer_init' and 'timer:hrtimer_start', see if the 'mode' argument is augmented, the 'mode' enum argument has the prefix of 'HRTIMER_MODE_' in its name. Committer testing: root@x1:~# perf test enum 124: perf trace enum augmentation tests : Ok root@x1:~# perf test -v enum 124: perf trace enum augmentation tests : Ok root@x1:~# perf trace -e landlock_add_rule perf test -v enum 0.000 ( 0.010 ms): perf/749827 landlock_add_rule(ruleset_fd: 11, rul= e_type: LANDLOCK_RULE_PATH_BENEATH, rule_attr: 0x7ffd324171d4, flags: 45) = =3D -1 EINVAL (Invalid argument) 0.012 ( 0.002 ms): perf/749827 landlock_add_rule(ruleset_fd: 11, rul= e_type: LANDLOCK_RULE_NET_PORT, rule_attr: 0x7ffd324171e0, flags: 45) =3D -= 1 EINVAL (Invalid argument) 457.821 ( 0.007 ms): perf/749830 landlock_add_rule(ruleset_fd: 11, rul= e_type: LANDLOCK_RULE_PATH_BENEATH, rule_attr: 0x7ffd4acd31e4, flags: 45) = =3D -1 EINVAL (Invalid argument) 457.832 ( 0.003 ms): perf/749830 landlock_add_rule(ruleset_fd: 11, rul= e_type: LANDLOCK_RULE_NET_PORT, rule_attr: 0x7ffd4acd31f0, flags: 45) =3D -= 1 EINVAL (Invalid argument) 124: perf trace enum augmentation tests : Ok root@x1:~# Suggested-by: Arnaldo Carvalho de Melo Signed-off-by: Howard Chu Tested-by: Arnaldo Carvalho de Melo Cc: Adrian Hunter Cc: Ian Rogers Cc: Jiri Olsa Cc: Kan Liang Cc: Namhyung Kim Link: https://lore.kernel.org/lkml/20240619082042.4173621-6-howardchu95@gma= il.com Link: https://lore.kernel.org/r/20240624181345.124764-7-howardchu95@gmail.c= om Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/tests/shell/trace_btf_enum.sh | 61 ++++++++++++++++++++++++ 1 file changed, 61 insertions(+) create mode 100755 tools/perf/tests/shell/trace_btf_enum.sh diff --git a/tools/perf/tests/shell/trace_btf_enum.sh b/tools/perf/tests/sh= ell/trace_btf_enum.sh new file mode 100755 index 000000000000..7d407b52bea5 --- /dev/null +++ b/tools/perf/tests/shell/trace_btf_enum.sh @@ -0,0 +1,61 @@ +#!/bin/sh +# perf trace enum augmentation tests +# SPDX-License-Identifier: GPL-2.0 + +err=3D0 +set -e + +syscall=3D"landlock_add_rule" +non_syscall=3D"timer:hrtimer_init,timer:hrtimer_start" + +TESTPROG=3D"perf test -w landlock" + +. "$(dirname $0)"/lib/probe.sh +skip_if_no_perf_trace || exit 2 + +check_vmlinux() { + echo "Checking if vmlinux exists" + if ! ls /sys/kernel/btf/vmlinux 1>/dev/null 2>&1 + then + echo "trace+enum test [Skipped missing vmlinux BTF support]" + err=3D2 + fi +} + +trace_landlock() { + echo "Tracing syscall ${syscall}" + + # test flight just to see if landlock_add_rule and libbpf are available + $TESTPROG + + if perf trace -e $syscall $TESTPROG 2>&1 | \ + grep -q -E ".*landlock_add_rule\(ruleset_fd: 11, rule_type: (LANDLOCK= _RULE_PATH_BENEATH|LANDLOCK_RULE_NET_PORT), rule_attr: 0x[a-f0-9]+, flags: = 45\) =3D -1.*" + then + err=3D0 + else + err=3D1 + fi +} + +trace_non_syscall() { + echo "Tracing non-syscall tracepoint ${non-syscall}" + if perf trace -e $non_syscall --max-events=3D1 2>&1 | \ + grep -q -E '.*timer:hrtimer_.*\(.*mode: HRTIMER_MODE_.*\)$' + then + err=3D0 + else + err=3D1 + fi +} + +check_vmlinux + +if [ $err =3D 0 ]; then + trace_landlock +fi + +if [ $err =3D 0 ]; then + trace_non_syscall +fi + +exit $err --=20 2.45.2