#!/bin/bash
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set -e
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set -o pipefail
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# To debug, uncomment the following line
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# set -x
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# Test whether the compile option -mprofile-kernel exists and generates
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# profiling code (ie. a call to _mcount()).
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echo "int func() { return 0; }" | \
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$* -S -x c -O2 -p -mprofile-kernel - -o - 2> /dev/null | \
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grep -q "_mcount"
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# Test whether the notrace attribute correctly suppresses calls to _mcount().
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echo -e "#include <linux/compiler.h>\nnotrace int func() { return 0; }" | \
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$* -S -x c -O2 -p -mprofile-kernel - -o - 2> /dev/null | \
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grep -q "_mcount" && \
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exit 1
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echo "OK"
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exit 0
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