47 lines
749 B
C
47 lines
749 B
C
/* SPDX-License-Identifier: GPL-2.0 */
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#include <signal.h>
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#include <stdlib.h>
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#include <linux/compiler.h>
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#include <unistd.h>
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#include "../tests.h"
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/* We want to check these symbols in perf script */
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noinline void leaf(volatile int b);
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noinline void parent(volatile int b);
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static volatile int a;
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static volatile sig_atomic_t done;
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static void sighandler(int sig __maybe_unused)
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{
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done = 1;
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}
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noinline void leaf(volatile int b)
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{
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while (!done)
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a += b;
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}
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noinline void parent(volatile int b)
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{
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leaf(b);
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}
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static int leafloop(int argc, const char **argv)
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{
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int sec = 1;
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if (argc > 0)
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sec = atoi(argv[0]);
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signal(SIGINT, sighandler);
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signal(SIGALRM, sighandler);
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alarm(sec);
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parent(sec);
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return 0;
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}
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DEFINE_WORKLOAD(leafloop);
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