Greg Kroah-Hartman | b244131 | 2017-11-01 15:07:57 +0100 | [diff] [blame] | 1 | // SPDX-License-Identifier: GPL-2.0 |
Wang Nan | 9bc898c | 2015-07-08 10:04:02 +0000 | [diff] [blame] | 2 | #include <stdio.h> |
| 3 | #include <bpf/libbpf.h> |
| 4 | #include <util/llvm-utils.h> |
| 5 | #include <util/cache.h> |
Wang Nan | b31de01 | 2015-11-06 13:49:41 +0000 | [diff] [blame] | 6 | #include "llvm.h" |
Wang Nan | 9bc898c | 2015-07-08 10:04:02 +0000 | [diff] [blame] | 7 | #include "tests.h" |
| 8 | #include "debug.h" |
Arnaldo Carvalho de Melo | 175729f | 2016-07-07 11:38:09 -0300 | [diff] [blame] | 9 | #include "util.h" |
Wang Nan | 9bc898c | 2015-07-08 10:04:02 +0000 | [diff] [blame] | 10 | |
Wang Nan | 9bc898c | 2015-07-08 10:04:02 +0000 | [diff] [blame] | 11 | #ifdef HAVE_LIBBPF_SUPPORT |
| 12 | static int test__bpf_parsing(void *obj_buf, size_t obj_buf_sz) |
| 13 | { |
| 14 | struct bpf_object *obj; |
| 15 | |
Wang Nan | acf860a | 2015-08-27 02:30:55 +0000 | [diff] [blame] | 16 | obj = bpf_object__open_buffer(obj_buf, obj_buf_sz, NULL); |
Joe Stringer | e28ff1a | 2017-01-22 17:11:25 -0800 | [diff] [blame] | 17 | if (libbpf_get_error(obj)) |
Wang Nan | b31de01 | 2015-11-06 13:49:41 +0000 | [diff] [blame] | 18 | return TEST_FAIL; |
Wang Nan | 9bc898c | 2015-07-08 10:04:02 +0000 | [diff] [blame] | 19 | bpf_object__close(obj); |
Wang Nan | b31de01 | 2015-11-06 13:49:41 +0000 | [diff] [blame] | 20 | return TEST_OK; |
Wang Nan | 9bc898c | 2015-07-08 10:04:02 +0000 | [diff] [blame] | 21 | } |
| 22 | #else |
| 23 | static int test__bpf_parsing(void *obj_buf __maybe_unused, |
| 24 | size_t obj_buf_sz __maybe_unused) |
| 25 | { |
Wang Nan | 597bdeb | 2015-11-03 10:44:42 +0000 | [diff] [blame] | 26 | pr_debug("Skip bpf parsing\n"); |
Wang Nan | b31de01 | 2015-11-06 13:49:41 +0000 | [diff] [blame] | 27 | return TEST_OK; |
Wang Nan | 9bc898c | 2015-07-08 10:04:02 +0000 | [diff] [blame] | 28 | } |
| 29 | #endif |
| 30 | |
Wang Nan | b31de01 | 2015-11-06 13:49:41 +0000 | [diff] [blame] | 31 | static struct { |
| 32 | const char *source; |
| 33 | const char *desc; |
Wang Nan | 7b6982c | 2016-01-25 09:55:48 +0000 | [diff] [blame] | 34 | bool should_load_fail; |
Wang Nan | b31de01 | 2015-11-06 13:49:41 +0000 | [diff] [blame] | 35 | } bpf_source_table[__LLVM_TESTCASE_MAX] = { |
| 36 | [LLVM_TESTCASE_BASE] = { |
| 37 | .source = test_llvm__bpf_base_prog, |
Arnaldo Carvalho de Melo | 030910c | 2016-11-29 12:38:14 -0300 | [diff] [blame] | 38 | .desc = "Basic BPF llvm compile", |
Wang Nan | b31de01 | 2015-11-06 13:49:41 +0000 | [diff] [blame] | 39 | }, |
Wang Nan | 7af3f3d | 2015-11-06 13:49:42 +0000 | [diff] [blame] | 40 | [LLVM_TESTCASE_KBUILD] = { |
| 41 | .source = test_llvm__bpf_test_kbuild_prog, |
Arnaldo Carvalho de Melo | 030910c | 2016-11-29 12:38:14 -0300 | [diff] [blame] | 42 | .desc = "kbuild searching", |
Wang Nan | 7af3f3d | 2015-11-06 13:49:42 +0000 | [diff] [blame] | 43 | }, |
Wang Nan | bbb7d49 | 2015-11-16 12:10:14 +0000 | [diff] [blame] | 44 | [LLVM_TESTCASE_BPF_PROLOGUE] = { |
| 45 | .source = test_llvm__bpf_test_prologue_prog, |
Arnaldo Carvalho de Melo | 030910c | 2016-11-29 12:38:14 -0300 | [diff] [blame] | 46 | .desc = "Compile source for BPF prologue generation", |
Wang Nan | bbb7d49 | 2015-11-16 12:10:14 +0000 | [diff] [blame] | 47 | }, |
Wang Nan | 7b6982c | 2016-01-25 09:55:48 +0000 | [diff] [blame] | 48 | [LLVM_TESTCASE_BPF_RELOCATION] = { |
| 49 | .source = test_llvm__bpf_test_relocation, |
Arnaldo Carvalho de Melo | 030910c | 2016-11-29 12:38:14 -0300 | [diff] [blame] | 50 | .desc = "Compile source for BPF relocation", |
Wang Nan | 7b6982c | 2016-01-25 09:55:48 +0000 | [diff] [blame] | 51 | .should_load_fail = true, |
| 52 | }, |
Wang Nan | b31de01 | 2015-11-06 13:49:41 +0000 | [diff] [blame] | 53 | }; |
| 54 | |
Wang Nan | b31de01 | 2015-11-06 13:49:41 +0000 | [diff] [blame] | 55 | int |
| 56 | test_llvm__fetch_bpf_obj(void **p_obj_buf, |
| 57 | size_t *p_obj_buf_sz, |
Arnaldo Carvalho de Melo | 916d409 | 2015-11-18 17:38:49 -0300 | [diff] [blame] | 58 | enum test_llvm__testcase idx, |
Wang Nan | 7b6982c | 2016-01-25 09:55:48 +0000 | [diff] [blame] | 59 | bool force, |
| 60 | bool *should_load_fail) |
Wang Nan | 9bc898c | 2015-07-08 10:04:02 +0000 | [diff] [blame] | 61 | { |
Wang Nan | b31de01 | 2015-11-06 13:49:41 +0000 | [diff] [blame] | 62 | const char *source; |
| 63 | const char *desc; |
| 64 | const char *tmpl_old, *clang_opt_old; |
| 65 | char *tmpl_new = NULL, *clang_opt_new = NULL; |
| 66 | int err, old_verbose, ret = TEST_FAIL; |
| 67 | |
Arnaldo Carvalho de Melo | 916d409 | 2015-11-18 17:38:49 -0300 | [diff] [blame] | 68 | if (idx >= __LLVM_TESTCASE_MAX) |
Wang Nan | b31de01 | 2015-11-06 13:49:41 +0000 | [diff] [blame] | 69 | return TEST_FAIL; |
| 70 | |
Arnaldo Carvalho de Melo | 916d409 | 2015-11-18 17:38:49 -0300 | [diff] [blame] | 71 | source = bpf_source_table[idx].source; |
| 72 | desc = bpf_source_table[idx].desc; |
Wang Nan | 7b6982c | 2016-01-25 09:55:48 +0000 | [diff] [blame] | 73 | if (should_load_fail) |
| 74 | *should_load_fail = bpf_source_table[idx].should_load_fail; |
Wang Nan | 9bc898c | 2015-07-08 10:04:02 +0000 | [diff] [blame] | 75 | |
Wang Nan | 9bc898c | 2015-07-08 10:04:02 +0000 | [diff] [blame] | 76 | /* |
| 77 | * Skip this test if user's .perfconfig doesn't set [llvm] section |
| 78 | * and clang is not found in $PATH, and this is not perf test -v |
| 79 | */ |
Namhyung Kim | bb963e1 | 2017-02-17 17:17:38 +0900 | [diff] [blame] | 80 | if (!force && (verbose <= 0 && |
Wang Nan | b31de01 | 2015-11-06 13:49:41 +0000 | [diff] [blame] | 81 | !llvm_param.user_set_param && |
| 82 | llvm__search_clang())) { |
Wang Nan | 597bdeb | 2015-11-03 10:44:42 +0000 | [diff] [blame] | 83 | pr_debug("No clang and no verbosive, skip this test\n"); |
Wang Nan | 9bc898c | 2015-07-08 10:04:02 +0000 | [diff] [blame] | 84 | return TEST_SKIP; |
| 85 | } |
| 86 | |
Wang Nan | 9bc898c | 2015-07-08 10:04:02 +0000 | [diff] [blame] | 87 | /* |
| 88 | * llvm is verbosity when error. Suppress all error output if |
| 89 | * not 'perf test -v'. |
| 90 | */ |
Wang Nan | b31de01 | 2015-11-06 13:49:41 +0000 | [diff] [blame] | 91 | old_verbose = verbose; |
Wang Nan | 9bc898c | 2015-07-08 10:04:02 +0000 | [diff] [blame] | 92 | if (verbose == 0) |
| 93 | verbose = -1; |
| 94 | |
Wang Nan | b31de01 | 2015-11-06 13:49:41 +0000 | [diff] [blame] | 95 | *p_obj_buf = NULL; |
| 96 | *p_obj_buf_sz = 0; |
| 97 | |
Wang Nan | 9bc898c | 2015-07-08 10:04:02 +0000 | [diff] [blame] | 98 | if (!llvm_param.clang_bpf_cmd_template) |
Wang Nan | b31de01 | 2015-11-06 13:49:41 +0000 | [diff] [blame] | 99 | goto out; |
Wang Nan | 9bc898c | 2015-07-08 10:04:02 +0000 | [diff] [blame] | 100 | |
| 101 | if (!llvm_param.clang_opt) |
| 102 | llvm_param.clang_opt = strdup(""); |
| 103 | |
Wang Nan | b31de01 | 2015-11-06 13:49:41 +0000 | [diff] [blame] | 104 | err = asprintf(&tmpl_new, "echo '%s' | %s%s", source, |
| 105 | llvm_param.clang_bpf_cmd_template, |
| 106 | old_verbose ? "" : " 2>/dev/null"); |
Wang Nan | 9bc898c | 2015-07-08 10:04:02 +0000 | [diff] [blame] | 107 | if (err < 0) |
Wang Nan | b31de01 | 2015-11-06 13:49:41 +0000 | [diff] [blame] | 108 | goto out; |
Wang Nan | 9bc898c | 2015-07-08 10:04:02 +0000 | [diff] [blame] | 109 | err = asprintf(&clang_opt_new, "-xc %s", llvm_param.clang_opt); |
| 110 | if (err < 0) |
Wang Nan | b31de01 | 2015-11-06 13:49:41 +0000 | [diff] [blame] | 111 | goto out; |
Wang Nan | 9bc898c | 2015-07-08 10:04:02 +0000 | [diff] [blame] | 112 | |
Wang Nan | b31de01 | 2015-11-06 13:49:41 +0000 | [diff] [blame] | 113 | tmpl_old = llvm_param.clang_bpf_cmd_template; |
Wang Nan | 9bc898c | 2015-07-08 10:04:02 +0000 | [diff] [blame] | 114 | llvm_param.clang_bpf_cmd_template = tmpl_new; |
Wang Nan | b31de01 | 2015-11-06 13:49:41 +0000 | [diff] [blame] | 115 | clang_opt_old = llvm_param.clang_opt; |
Wang Nan | 9bc898c | 2015-07-08 10:04:02 +0000 | [diff] [blame] | 116 | llvm_param.clang_opt = clang_opt_new; |
Wang Nan | b31de01 | 2015-11-06 13:49:41 +0000 | [diff] [blame] | 117 | |
| 118 | err = llvm__compile_bpf("-", p_obj_buf, p_obj_buf_sz); |
| 119 | |
| 120 | llvm_param.clang_bpf_cmd_template = tmpl_old; |
| 121 | llvm_param.clang_opt = clang_opt_old; |
Wang Nan | 9bc898c | 2015-07-08 10:04:02 +0000 | [diff] [blame] | 122 | |
| 123 | verbose = old_verbose; |
Wang Nan | 597bdeb | 2015-11-03 10:44:42 +0000 | [diff] [blame] | 124 | if (err) |
Wang Nan | b31de01 | 2015-11-06 13:49:41 +0000 | [diff] [blame] | 125 | goto out; |
Wang Nan | 9bc898c | 2015-07-08 10:04:02 +0000 | [diff] [blame] | 126 | |
Wang Nan | b31de01 | 2015-11-06 13:49:41 +0000 | [diff] [blame] | 127 | ret = TEST_OK; |
| 128 | out: |
| 129 | free(tmpl_new); |
| 130 | free(clang_opt_new); |
| 131 | if (ret != TEST_OK) |
| 132 | pr_debug("Failed to compile test case: '%s'\n", desc); |
| 133 | return ret; |
| 134 | } |
| 135 | |
Arnaldo Carvalho de Melo | 81f17c9 | 2017-08-03 15:16:31 -0300 | [diff] [blame] | 136 | int test__llvm(struct test *test __maybe_unused, int subtest) |
Wang Nan | b31de01 | 2015-11-06 13:49:41 +0000 | [diff] [blame] | 137 | { |
Wang Nan | e8c6d50 | 2015-11-17 08:32:48 +0000 | [diff] [blame] | 138 | int ret; |
| 139 | void *obj_buf = NULL; |
| 140 | size_t obj_buf_sz = 0; |
Wang Nan | 7b6982c | 2016-01-25 09:55:48 +0000 | [diff] [blame] | 141 | bool should_load_fail = false; |
Wang Nan | b31de01 | 2015-11-06 13:49:41 +0000 | [diff] [blame] | 142 | |
Wang Nan | e8c6d50 | 2015-11-17 08:32:48 +0000 | [diff] [blame] | 143 | if ((subtest < 0) || (subtest >= __LLVM_TESTCASE_MAX)) |
| 144 | return TEST_FAIL; |
Wang Nan | b31de01 | 2015-11-06 13:49:41 +0000 | [diff] [blame] | 145 | |
Wang Nan | e8c6d50 | 2015-11-17 08:32:48 +0000 | [diff] [blame] | 146 | ret = test_llvm__fetch_bpf_obj(&obj_buf, &obj_buf_sz, |
Wang Nan | 7b6982c | 2016-01-25 09:55:48 +0000 | [diff] [blame] | 147 | subtest, false, &should_load_fail); |
Wang Nan | b31de01 | 2015-11-06 13:49:41 +0000 | [diff] [blame] | 148 | |
Wang Nan | 7b6982c | 2016-01-25 09:55:48 +0000 | [diff] [blame] | 149 | if (ret == TEST_OK && !should_load_fail) { |
Wang Nan | e8c6d50 | 2015-11-17 08:32:48 +0000 | [diff] [blame] | 150 | ret = test__bpf_parsing(obj_buf, obj_buf_sz); |
| 151 | if (ret != TEST_OK) { |
| 152 | pr_debug("Failed to parse test case '%s'\n", |
| 153 | bpf_source_table[subtest].desc); |
Wang Nan | b31de01 | 2015-11-06 13:49:41 +0000 | [diff] [blame] | 154 | } |
| 155 | } |
Wang Nan | e8c6d50 | 2015-11-17 08:32:48 +0000 | [diff] [blame] | 156 | free(obj_buf); |
| 157 | |
| 158 | return ret; |
| 159 | } |
| 160 | |
| 161 | int test__llvm_subtest_get_nr(void) |
| 162 | { |
| 163 | return __LLVM_TESTCASE_MAX; |
| 164 | } |
| 165 | |
| 166 | const char *test__llvm_subtest_get_desc(int subtest) |
| 167 | { |
| 168 | if ((subtest < 0) || (subtest >= __LLVM_TESTCASE_MAX)) |
| 169 | return NULL; |
| 170 | |
| 171 | return bpf_source_table[subtest].desc; |
Wang Nan | 9bc898c | 2015-07-08 10:04:02 +0000 | [diff] [blame] | 172 | } |