1# Arnaldo Carvalho de Melo <acme@kernel.org>, 2017
2
3perf probe -l 2>&1 | grep -q probe:vfs_getname
4had_vfs_getname=$?
5
6cleanup_probe_vfs_getname() {
7	if [ $had_vfs_getname -eq 1 ] ; then
8		perf probe -q -d probe:vfs_getname*
9	fi
10}
11
12add_probe_vfs_getname() {
13	local verbose=$1
14	if [ $had_vfs_getname -eq 1 ] ; then
15		line=$(perf probe -L getname_flags 2>&1 | grep -E 'result.*=.*filename;' | sed -r 's/[[:space:]]+([[:digit:]]+)[[:space:]]+result->uptr.*/\1/')
16		perf probe -q       "vfs_getname=getname_flags:${line} pathname=result->name:string" || \
17		perf probe $verbose "vfs_getname=getname_flags:${line} pathname=filename:ustring"
18	fi
19}
20
21skip_if_no_debuginfo() {
22	add_probe_vfs_getname -v 2>&1 | grep -E -q "^(Failed to find the path for the kernel|Debuginfo-analysis is not supported)|(file has no debug information)" && return 2
23	return 1
24}
25