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