tools/perf/tests/shell/trace_btf_enum.sh

   1 #!/bin/sh
   2 # perf trace enum augmentation tests
   3 # SPDX-License-Identifier: GPL-2.0
   4
   5 err=0
   6 set -e
   7
   8 syscall="landlock_add_rule"
   9 non_syscall="timer:hrtimer_init,timer:hrtimer_start"
  10
  11 TESTPROG="perf test -w landlock"
  12
  13 # shellcheck source=lib/probe.sh
  14 . "$(dirname $0)"/lib/probe.sh
  15 skip_if_no_perf_trace || exit 2
  16
  17 check_vmlinux() {
  18   echo "Checking if vmlinux exists"
  19   if ! ls /sys/kernel/btf/vmlinux 1>/dev/null 2>&1
  20   then
  21     echo "trace+enum test [Skipped missing vmlinux BTF support]"
  22     err=2
  23   fi
  24 }
  25
  26 trace_landlock() {
  27   echo "Tracing syscall ${syscall}"
  28
  29   # test flight just to see if landlock_add_rule and libbpf are available
  30   $TESTPROG
  31
  32   if perf trace -e $syscall $TESTPROG 2>&1 | \
  33      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.*"
  34   then
  35     err=0
  36   else
  37     err=1
  38   fi
  39 }
  40
  41 trace_non_syscall() {
  42   echo "Tracing non-syscall tracepoint ${non-syscall}"
  43   if perf trace -e $non_syscall --max-events=1 2>&1 | \
  44      grep -q -E '.*timer:hrtimer_.*\(.*mode: HRTIMER_MODE_.*\)$'
  45   then
  46     err=0
  47   else
  48     err=1
  49   fi
  50 }
  51
  52 check_vmlinux
  53
  54 if [ $err = 0 ]; then
  55   trace_landlock
  56 fi
  57
  58 if [ $err = 0 ]; then
  59   trace_non_syscall
  60 fi
  61
  62 exit $err