Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
1#!/bin/bash
2# perf all PMU test (exclusive)
3# SPDX-License-Identifier: GPL-2.0
4
5err=0
6result=""
7
8trap_cleanup() {
9 echo "Unexpected signal in ${FUNCNAME[1]}"
10 echo "$result"
11 exit 1
12}
13trap trap_cleanup EXIT TERM INT
14
15# Test all PMU events; however exclude parameterized ones (name contains '?')
16for p in $(perf list --raw-dump pmu | sed 's/[[:graph:]]\+?[[:graph:]]\+[[:space:]]//g')
17do
18 echo -n "Testing $p -- "
19 output=$(perf stat -e "$p" true 2>&1)
20 stat_result=$?
21 if echo "$output" | grep -q "$p"
22 then
23 # Event seen in output.
24 if [ $stat_result -eq 0 ] && ! echo "$output" | grep -q "<not supported>"
25 then
26 # Event supported.
27 echo "supported"
28 continue
29 elif echo "$output" | grep -q "<not supported>"
30 then
31 # Event not supported, so ignore.
32 echo "not supported"
33 continue
34 elif echo "$output" | grep -q "No permission to enable"
35 then
36 # No permissions, so ignore.
37 echo "no permission to enable"
38 continue
39 elif echo "$output" | grep -q "Bad event name"
40 then
41 # Non-existent event.
42 echo "Error: Bad event name"
43 echo "$output"
44 err=1
45 continue
46 fi
47 fi
48
49 if echo "$output" | grep -q "Access to performance monitoring and observability operations is limited."
50 then
51 # Access is limited, so ignore.
52 echo "access limited"
53 continue
54 fi
55
56 # We failed to see the event and it is supported. Possibly the workload was
57 # too small so retry with something longer.
58 output=$(perf stat -e "$p" perf bench internals synthesize 2>&1)
59 if echo "$output" | grep -q "$p"
60 then
61 # Event seen in output.
62 echo "supported"
63 continue
64 fi
65 echo "Error: event '$p' not printed in:"
66 echo "$output"
67 err=1
68done
69
70trap - EXIT TERM INT
71exit $err