tools/testing/selftests/bpf/uprobe_multi.c

// SPDX-License-Identifier: GPL-2.0

#include <stdio.h>
#include <string.h>
#include <sdt.h>

#define __PASTE(a, b) a##b
#define PASTE(a, b) __PASTE(a, b)

#define NAME(name, idx) PASTE(name, idx)

#define DEF(name, idx)  int NAME(name, idx)(void) { return 0; }
#define CALL(name, idx) NAME(name, idx)();

#define F(body, name, idx) body(name, idx)

#define F10(body, name, idx) \
	F(body, PASTE(name, idx), 0) F(body, PASTE(name, idx), 1) F(body, PASTE(name, idx), 2) \
	F(body, PASTE(name, idx), 3) F(body, PASTE(name, idx), 4) F(body, PASTE(name, idx), 5) \
	F(body, PASTE(name, idx), 6) F(body, PASTE(name, idx), 7) F(body, PASTE(name, idx), 8) \
	F(body, PASTE(name, idx), 9)

#define F100(body, name, idx) \
	F10(body, PASTE(name, idx), 0) F10(body, PASTE(name, idx), 1) F10(body, PASTE(name, idx), 2) \
	F10(body, PASTE(name, idx), 3) F10(body, PASTE(name, idx), 4) F10(body, PASTE(name, idx), 5) \
	F10(body, PASTE(name, idx), 6) F10(body, PASTE(name, idx), 7) F10(body, PASTE(name, idx), 8) \
	F10(body, PASTE(name, idx), 9)

#define F1000(body, name, idx) \
	F100(body, PASTE(name, idx), 0) F100(body, PASTE(name, idx), 1) F100(body, PASTE(name, idx), 2) \
	F100(body, PASTE(name, idx), 3) F100(body, PASTE(name, idx), 4) F100(body, PASTE(name, idx), 5) \
	F100(body, PASTE(name, idx), 6) F100(body, PASTE(name, idx), 7) F100(body, PASTE(name, idx), 8) \
	F100(body, PASTE(name, idx), 9)

#define F10000(body, name, idx) \
	F1000(body, PASTE(name, idx), 0) F1000(body, PASTE(name, idx), 1) F1000(body, PASTE(name, idx), 2) \
	F1000(body, PASTE(name, idx), 3) F1000(body, PASTE(name, idx), 4) F1000(body, PASTE(name, idx), 5) \
	F1000(body, PASTE(name, idx), 6) F1000(body, PASTE(name, idx), 7) F1000(body, PASTE(name, idx), 8) \
	F1000(body, PASTE(name, idx), 9)

F10000(DEF, uprobe_multi_func_, 0)
F10000(DEF, uprobe_multi_func_, 1)
F10000(DEF, uprobe_multi_func_, 2)
F10000(DEF, uprobe_multi_func_, 3)
F10000(DEF, uprobe_multi_func_, 4)

static int bench(void)
{
	F10000(CALL, uprobe_multi_func_, 0)
	F10000(CALL, uprobe_multi_func_, 1)
	F10000(CALL, uprobe_multi_func_, 2)
	F10000(CALL, uprobe_multi_func_, 3)
	F10000(CALL, uprobe_multi_func_, 4)
	return 0;
}

#define PROBE STAP_PROBE(test, usdt);

#define PROBE10    PROBE PROBE PROBE PROBE PROBE \
		   PROBE PROBE PROBE PROBE PROBE
#define PROBE100   PROBE10 PROBE10 PROBE10 PROBE10 PROBE10 \
		   PROBE10 PROBE10 PROBE10 PROBE10 PROBE10
#define PROBE1000  PROBE100 PROBE100 PROBE100 PROBE100 PROBE100 \
		   PROBE100 PROBE100 PROBE100 PROBE100 PROBE100
#define PROBE10000 PROBE1000 PROBE1000 PROBE1000 PROBE1000 PROBE1000 \
		   PROBE1000 PROBE1000 PROBE1000 PROBE1000 PROBE1000

static int usdt(void)
{
	PROBE10000
	PROBE10000
	PROBE10000
	PROBE10000
	PROBE10000
	return 0;
}

int main(int argc, char **argv)
{
	if (argc != 2)
		goto error;

	if (!strcmp("bench", argv[1]))
		return bench();
	if (!strcmp("usdt", argv[1]))
		return usdt();

error:
	fprintf(stderr, "usage: %s <bench|usdt>\n", argv[0]);
	return -1;
}