blob: bc82dfc7c410b1beba439200cedc3c30955604cb (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
|
// SPDX-License-Identifier: GPL-2.0
#include <pthread.h>
#include <stdlib.h>
#include <signal.h>
#include <unistd.h>
#include <linux/compiler.h>
#include "../tests.h"
static volatile int a;
static volatile sig_atomic_t done;
static void sighandler(int sig __maybe_unused)
{
done = 1;
}
static inline void __attribute__((always_inline)) leaf(int b)
{
again:
a += b;
if (!done)
goto again;
}
static inline void __attribute__((always_inline)) middle(int b)
{
leaf(b);
}
static noinline void parent(int b)
{
middle(b);
}
static int inlineloop(int argc, const char **argv)
{
int sec = 1;
pthread_setname_np(pthread_self(), "perf-inlineloop");
if (argc > 0)
sec = atoi(argv[0]);
signal(SIGINT, sighandler);
signal(SIGALRM, sighandler);
alarm(sec);
parent(sec);
return 0;
}
DEFINE_WORKLOAD(inlineloop);
|
