summaryrefslogtreecommitdiff
path: root/tools/perf/tests/shell/trace+probe_vfs_getname.sh
blob: 45d269b0157eb6bc42b1c16d2819d2a137db7175 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
#!/bin/sh
# Check open filename arg using perf trace + vfs_getname

# Uses the 'perf test shell' library to add probe:vfs_getname to the system
# then use it with 'perf trace' using 'touch' to write to a temp file, then
# checks that that was captured by the vfs_getname was used by 'perf trace',
# that already handles "probe:vfs_getname" if present, and used in the
# "open" syscall "filename" argument beautifier.

# SPDX-License-Identifier: GPL-2.0
# Arnaldo Carvalho de Melo <acme@kernel.org>, 2017

. $(dirname $0)/lib/probe.sh

skip_if_no_perf_probe || exit 2
skip_if_no_perf_trace || exit 2

. $(dirname $0)/lib/probe_vfs_getname.sh

file=$(mktemp /tmp/temporary_file.XXXXX)

trace_open_vfs_getname() {
	evts=$(echo $(perf list syscalls:sys_enter_open* 2>&1 | egrep 'open(at)? ' | sed -r 's/.*sys_enter_([a-z]+) +\[.*$/\1/') | sed 's/ /,/')
	perf trace -e $evts touch $file 2>&1 | \
	egrep " +[0-9]+\.[0-9]+ +\( +[0-9]+\.[0-9]+ ms\): +touch\/[0-9]+ open(at)?\((dfd: +CWD, +)?filename: +${file}, +flags: CREAT\|NOCTTY\|NONBLOCK\|WRONLY, +mode: +IRUGO\|IWUGO\) += +[0-9]+$"
}


add_probe_vfs_getname || skip_if_no_debuginfo
err=$?
if [ $err -ne 0 ] ; then
	exit $err
fi

trace_open_vfs_getname
err=$?
rm -f ${file}
cleanup_probe_vfs_getname
exit $err