tools/perf/tests/shell/lib/probe_vfs_getname.sh

   1 #!/bin/sh
   2 # Arnaldo Carvalho de Melo <acme@kernel.org>, 2017
   3
   4 perf probe -l 2>&1 | grep -q probe:vfs_getname
   5 had_vfs_getname=$?
   6
   7 cleanup_probe_vfs_getname() {
   8         if [ $had_vfs_getname -eq 1 ] ; then
   9                 perf probe -q -d probe:vfs_getname*
  10         fi
  11 }
  12
  13 add_probe_vfs_getname() {
  14         add_probe_verbose=$1
  15         if [ $had_vfs_getname -eq 1 ] ; then
  16                 result_filename_re="[[:space:]]+([[:digit:]]+)[[:space:]]+result->uptr.*"
  17                 line=$(perf probe -L getname_flags 2>&1 | grep -E "$result_filename_re" | sed -r "s/$result_filename_re/\1/")
  18                 if [ -z "$line" ] ; then
  19                         result_aname_re="[[:space:]]+([[:digit:]]+)[[:space:]]+result->aname = NULL;"
  20                         line=$(perf probe -L getname_flags 2>&1 | grep -E "$result_aname_re" | sed -r "s/$result_aname_re/\1/")
  21                 fi
  22                 perf probe -q       "vfs_getname=getname_flags:${line} pathname=result->name:string" || \
  23                 perf probe $add_probe_verbose "vfs_getname=getname_flags:${line} pathname=filename:ustring"
  24         fi
  25 }
  26
  27 skip_if_no_debuginfo() {
  28         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
  29         return 1
  30 }
  31
  32 # check if perf is compiled with libtraceevent support
  33 skip_no_probe_record_support() {
  34         if [ $had_vfs_getname -eq 1 ] ; then
  35                 perf check feature -q libtraceevent && return 1
  36                 return 2
  37         fi
  38 }