testsuite/buildok/fortytwo.stp

   1 #! /bin/sh
   2
   3 # This is a roundabout test of kernel.statement().
   4
   5 set -e
   6
   7 fn="do_readv_writev@fs/read_write.c"
   8 if stap -l 'kernel.function("'$fn'")' > /dev/null; then
   9     var="file"
  10     echo "Function '$fn' found."
  11 else
  12     fn="do_iter_readv_writev@fs/read_write.c"
  13     if stap -l 'kernel.function("'$fn'")' > /dev/null; then
  14         var="filp"
  15         echo "Function '$fn' found."
  16     else
  17         echo "Unexpected error: Can't find any function to test."
  18         exit 1
  19     fi
  20 fi
  21
  22 fullfn=`stap $@ -u -wp2 -e 'probe kernel.statement("'$fn'") {}' | grep kernel | cut -f2 -d'"'`
  23 lineno=`echo $fullfn | cut -f2 -d:`
  24
  25 echo "$0: $fn found, starting line $lineno"
  26
  27 for i in 0 1 2 4 6 10 15 20 25 # some random numbers, not larger than the number of lines in fn
  28 do
  29     ilineno=`expr $lineno + $i`
  30     errors=`stap $@ -u -p4 -e 'probe kernel.statement("'$fn':'$ilineno'") {$'$var'}' 2>&1 >/dev/null ||true `
  31     if echo "$errors" | grep -q unable.to.find.local
  32     then
  33         echo "Unexpected error $errors"; exit 1
  34     fi
  35     echo 'probe kernel.statement("'$fn':'$ilineno'") {$'$var'}' '#' OK
  36 done
  37
  38 errors=`stap $@ -u -p4 -e 'probe kernel.statement("'$fn':'$lineno'").nearest {$'$var'}' 2>&1 >/dev/null ||true `
  39 if echo "$errors" | grep -q unable.to.find.local
  40 then
  41     echo "Unexpected error $errors"; exit 1
  42 fi
  43 echo 'probe kernel.statement("'$fn':'$lineno'").nearest {$'$var'}' '#' OK