arch/powerpc/scripts/gcc-check-mprofile-kernel.sh

   1 #!/bin/bash
   2
   3 set -e
   4 set -o pipefail
   5
   6 # To debug, uncomment the following line
   7 # set -x
   8
   9 # Test whether the compile option -mprofile-kernel exists and generates
  10 # profiling code (ie. a call to _mcount()).
  11 echo "int func() { return 0; }" | \
  12     $* -S -x c -O2 -p -mprofile-kernel - -o - 2> /dev/null | \
  13     grep -q "_mcount"
  14
  15 # Test whether the notrace attribute correctly suppresses calls to _mcount().
  16
  17 echo -e "#include <linux/compiler.h>\nnotrace int func() { return 0; }" | \
  18     $* -S -x c -O2 -p -mprofile-kernel - -o - 2> /dev/null | \
  19     grep -q "_mcount" && \
  20     exit 1
  21
  22 echo "OK"
  23 exit 0