| rjw | 1f88458 | 2022-01-06 17:20:42 +0800 | [diff] [blame^] | 1 | #!/bin/bash |
| 2 | # SPDX-License-Identifier: GPL-2.0 |
| 3 | |
| 4 | set -e |
| 5 | set -o pipefail |
| 6 | |
| 7 | # To debug, uncomment the following line |
| 8 | # set -x |
| 9 | |
| 10 | # Test whether the compile option -mprofile-kernel exists and generates |
| 11 | # profiling code (ie. a call to _mcount()). |
| 12 | echo "int func() { return 0; }" | \ |
| 13 | $* -S -x c -O2 -p -mprofile-kernel - -o - 2> /dev/null | \ |
| 14 | grep -q "_mcount" |
| 15 | |
| 16 | # Test whether the notrace attribute correctly suppresses calls to _mcount(). |
| 17 | |
| 18 | echo -e "#include <linux/compiler.h>\nnotrace int func() { return 0; }" | \ |
| 19 | $* -S -x c -O2 -p -mprofile-kernel - -o - 2> /dev/null | \ |
| 20 | grep -q "_mcount" && \ |
| 21 | exit 1 |
| 22 | |
| 23 | echo "OK" |
| 24 | exit 0 |