| #!/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 |
| } |
