name : probe_vfs_getname.sh #!/bin/sh # Arnaldo Carvalho de Melo <acme@kernel.org>, 2017 perf probe -l 2>&1 | grep -q probe:vfs_getname had_vfs_getname=$? cleanup_probe_vfs_getname() { if [ $had_vfs_getname -eq 1 ] ; then perf probe -q -d probe:vfs_getname* fi } add_probe_vfs_getname() { add_probe_verbose=$1 if [ $had_vfs_getname -eq 1 ] ; then line=$(perf probe -L getname_flags 2>&1 | grep -E 'result.*=.*filename;' | sed -r 's/[[:space:]]+([[:digit:]]+)[[:space:]]+result->uptr.*/\1/') perf probe -q "vfs_getname=getname_flags:${line} pathname=result->name:string" || \ perf probe $add_probe_verbose "vfs_getname=getname_flags:${line} pathname=filename:ustring" fi } skip_if_no_debuginfo() { 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 return 1 } # check if perf is compiled with libtraceevent support skip_no_probe_record_support() { if [ $had_vfs_getname -eq 1 ] ; then perf record --dry-run -e $1 2>&1 | grep "libtraceevent is necessary for tracepoint support" && return 2 return 1 fi }