2 # SPDX-License-Identifier: GPL-2.0
7 # To debug, uncomment the following line
10 # -mprofile-kernel is only supported on 64le, so this should not be invoked
11 # for other targets. Therefore we can pass in -m64 and -mlittle-endian
12 # explicitly, to take care of toolchains defaulting to other targets.
14 # Test whether the compile option -mprofile-kernel exists and generates
15 # profiling code (ie. a call to _mcount()).
16 echo "int func() { return 0; }" | \
17 $
* -m64 -mlittle-endian -S -x c
-O2 -p -mprofile-kernel - -o - \
18 2> /dev
/null |
grep -q "_mcount"
20 # Test whether the notrace attribute correctly suppresses calls to _mcount().
22 echo -e "#include <linux/compiler.h>\nnotrace int func() { return 0; }" | \
23 $
* -m64 -mlittle-endian -S -x c
-O2 -p -mprofile-kernel - -o - \
24 2> /dev
/null |
grep -q "_mcount" && \