perf test: Add libbpf pinning test (a2630536) · Commits · 戴 / test

tools/perf/tests/bpf.c

+41 −1

Original line number	Diff line number	Diff line
		@@ -5,11 +5,13 @@
		#include <util/evlist.h>
		#include <linux/bpf.h>
		#include <linux/filter.h>
		#include <api/fs/fs.h>
		#include <bpf/bpf.h>
		#include "tests.h"
		#include "llvm.h"
		#include "debug.h"
		#define NR_ITERS 111
		#define PERF_TEST_BPF_PATH "/sys/fs/bpf/perf_test"

		#ifdef HAVE_LIBBPF_SUPPORT

		@@ -54,6 +56,7 @@ static struct {
		const char *msg_load_fail;
		int (*target_func)(void);
		int expect_result;
		bool pin;
		} bpf_testcase_table[] = {
		{
		LLVM_TESTCASE_BASE,
		@@ -63,6 +66,17 @@ static struct {
		"load bpf object failed",
		&epoll_wait_loop,
		(NR_ITERS + 1) / 2,
		false,
		},
		{
		LLVM_TESTCASE_BASE,
		"BPF pinning",
		"[bpf_pinning]",
		"fix kbuild first",
		"check your vmlinux setting?",
		&epoll_wait_loop,
		(NR_ITERS + 1) / 2,
		true,
		},
		#ifdef HAVE_BPF_PROLOGUE
		{
		@@ -73,6 +87,7 @@ static struct {
		"check your vmlinux setting?",
		&llseek_loop,
		(NR_ITERS + 1) / 4,
		false,
		},
		#endif
		{
		@@ -83,6 +98,7 @@ static struct {
		"libbpf error when dealing with relocation",
		NULL,
		0,
		false,
		},
		};

		@@ -226,10 +242,34 @@ static int __test__bpf(int idx)
		goto out;
		}

		if (obj)
		if (obj) {
		ret = do_test(obj,
		bpf_testcase_table[idx].target_func,
		bpf_testcase_table[idx].expect_result);
		if (ret != TEST_OK)
		goto out;
		if (bpf_testcase_table[idx].pin) {
		int err;

		if (!bpf_fs__mount()) {
		pr_debug("BPF filesystem not mounted\n");
		ret = TEST_FAIL;
		goto out;
		}
		err = mkdir(PERF_TEST_BPF_PATH, 0777);
		if (err && errno != EEXIST) {
		pr_debug("Failed to make perf_test dir: %s\n",
		strerror(errno));
		ret = TEST_FAIL;
		goto out;
		}
		if (bpf_object__pin(obj, PERF_TEST_BPF_PATH))
		ret = TEST_FAIL;
		if (rm_rf(PERF_TEST_BPF_PATH))
		ret = TEST_FAIL;
		}
		}

		out:
		bpf__clear();
		return ret;

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