tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1#!/bin/bash
2# perf all PMU test (exclusive)
3# SPDX-License-Identifier: GPL-2.0
4
5set -e
6err=0
7result=""
8
9trap_cleanup() {
10 echo "Unexpected signal in ${FUNCNAME[1]}"
11 echo "$result"
12 exit 1
13}
14trap trap_cleanup EXIT TERM INT
15
16# Test all PMU events; however exclude parameterized ones (name contains '?')
17for p in $(perf list --raw-dump pmu | sed 's/[[:graph:]]\+?[[:graph:]]\+[[:space:]]//g')
18do
19 echo "Testing $p"
20 result=$(perf stat -e "$p" true 2>&1)
21 if echo "$result" | grep -q "$p"
22 then
23 # Event seen in output.
24 continue
25 fi
26 if echo "$result" | grep -q "<not supported>"
27 then
28 # Event not supported, so ignore.
29 continue
30 fi
31 if echo "$result" | grep -q "Access to performance monitoring and observability operations is limited."
32 then
33 # Access is limited, so ignore.
34 continue
35 fi
36
37 # We failed to see the event and it is supported. Possibly the workload was
38 # too small so retry with something longer.
39 result=$(perf stat -e "$p" perf bench internals synthesize 2>&1)
40 if echo "$result" | grep -q "$p"
41 then
42 # Event seen in output.
43 continue
44 fi
45 echo "Error: event '$p' not printed in:"
46 echo "$result"
47 err=1
48done
49
50trap - EXIT TERM INT
51exit $err