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#!/bin/sh
# perf pipe recording and injection test
# SPDX-License-Identifier: GPL-2.0
# skip if there's no compiler
if ! [ -x "$(command -v cc)" ]; then
echo "failed: no compiler, install gcc"
exit 2
fi
file=$(mktemp /tmp/test.file.XXXXXX)
data=$(mktemp /tmp/perf.data.XXXXXX)
cat <<EOF | cc -o ${file} -x c -
#include <signal.h>
#include <stdlib.h>
#include <unistd.h>
volatile int done;
void sigalrm(int sig) {
done = 1;
}
__attribute__((noinline)) void noploop(void) {
while (!done)
continue;
}
int main(int argc, char *argv[]) {
int sec = 1;
if (argc > 1)
sec = atoi(argv[1]);
signal(SIGALRM, sigalrm);
alarm(sec);
noploop();
return 0;
}
EOF
if ! perf record -e task-clock:u -o - ${file} | perf report -i - --task | grep test.file; then
echo "cannot find the test file in the perf report"
exit 1
fi
if ! perf record -e task-clock:u -o - ${file} | perf inject -b | perf report -i - | grep noploop; then
echo "cannot find noploop function in pipe #1"
exit 1
fi
perf record -e task-clock:u -o - ${file} | perf inject -b -o ${data}
if ! perf report -i ${data} | grep noploop; then
echo "cannot find noploop function in pipe #2"
exit 1
fi
perf record -e task-clock:u -o ${data} ${file}
if ! perf inject -b -i ${data} | perf report -i - | grep noploop; then
echo "cannot find noploop function in pipe #3"
exit 1
fi
rm -f ${file} ${data} ${data}.old
exit 0
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