| Server IP : 127.0.1.1 / Your IP : 216.73.216.152 Web Server : Apache/2.4.52 (Ubuntu) System : Linux bahcrestlinepropertiesllc 5.15.0-113-generic #123-Ubuntu SMP Mon Jun 10 08:16:17 UTC 2024 x86_64 User : www-data ( 33) PHP Version : 7.4.33 Disable Function : pcntl_alarm,pcntl_fork,pcntl_waitpid,pcntl_wait,pcntl_wifexited,pcntl_wifstopped,pcntl_wifsignaled,pcntl_wifcontinued,pcntl_wexitstatus,pcntl_wtermsig,pcntl_wstopsig,pcntl_signal,pcntl_signal_get_handler,pcntl_signal_dispatch,pcntl_get_last_error,pcntl_strerror,pcntl_sigprocmask,pcntl_sigwaitinfo,pcntl_sigtimedwait,pcntl_exec,pcntl_getpriority,pcntl_setpriority,pcntl_async_signals,pcntl_unshare, MySQL : OFF | cURL : ON | WGET : ON | Perl : ON | Python : OFF | Sudo : ON | Pkexec : ON Directory : /usr/src/linux-headers-5.15.0-113/tools/perf/tests/shell/ |
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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