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 | egrep '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:string"
18	fi
19}
20
21skip_if_no_debuginfo() {
22	add_probe_vfs_getname -v 2>&1 | egrep -q "^(Failed to find the path for kernel|Debuginfo-analysis is not supported)" && return 2
23	return 1
 
 
 
 
 
 
 
 
24}

 1#!/bin/sh
 2# Arnaldo Carvalho de Melo <acme@kernel.org>, 2017
 3
 4perf probe -l 2>&1 | grep -q probe:vfs_getname
 5had_vfs_getname=$?
 6
 7cleanup_probe_vfs_getname() {
 8	if [ $had_vfs_getname -eq 1 ] ; then
 9		perf probe -q -d probe:vfs_getname*
10	fi
11}
12
13add_probe_vfs_getname() {
14	add_probe_verbose=$1
15	if [ $had_vfs_getname -eq 1 ] ; then
16		line=$(perf probe -L getname_flags 2>&1 | grep -E 'result.*=.*filename;' | sed -r 's/[[:space:]]+([[:digit:]]+)[[:space:]]+result->uptr.*/\1/')
17		perf probe -q       "vfs_getname=getname_flags:${line} pathname=result->name:string" || \
18		perf probe $add_probe_verbose "vfs_getname=getname_flags:${line} pathname=filename:ustring"
19	fi
20}
21
22skip_if_no_debuginfo() {
23	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
24	return 1
25}
26
27# check if perf is compiled with libtraceevent support
28skip_no_probe_record_support() {
29	if [ $had_vfs_getname -eq 1 ] ; then
30		perf record --dry-run -e $1 2>&1 | grep "libtraceevent is necessary for tracepoint support" && return 2
31		return 1
32	fi
33}