1#!/bin/bash
 2
 3set -e
 4set -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()).
11echo "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
17echo -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
22echo "OK"
23exit 0