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