Commit | Line | Data |
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90702366 | 1 | // SPDX-License-Identifier: MIT |
f2d7b530 | 2 | // SPDX-FileCopyrightText: 2020 Mathieu Desnoyers <mathieu.desnoyers@efficios.com> |
93da3184 MD |
3 | /* |
4 | * Basic test coverage for critical regions and rseq_current_cpu(). | |
5 | */ | |
6 | ||
7 | #ifndef _GNU_SOURCE | |
8 | #define _GNU_SOURCE | |
9 | #endif | |
10 | #include <assert.h> | |
11 | #include <sched.h> | |
12 | #include <signal.h> | |
13 | #include <stdio.h> | |
14 | #include <string.h> | |
15 | #include <sys/time.h> | |
16 | ||
17 | #include <rseq/rseq.h> | |
18 | ||
544cdc88 MJ |
19 | #include "tap.h" |
20 | ||
6e284b80 | 21 | static void test_cpu_pointer(void) |
93da3184 MD |
22 | { |
23 | cpu_set_t affinity, test_affinity; | |
544cdc88 MJ |
24 | int ret, i; |
25 | ||
544cdc88 MJ |
26 | ret = sched_getaffinity(0, sizeof(affinity), &affinity); |
27 | ok(ret == 0, "Get current thread affinity mask"); | |
93da3184 | 28 | |
93da3184 MD |
29 | CPU_ZERO(&test_affinity); |
30 | for (i = 0; i < CPU_SETSIZE; i++) { | |
31 | if (CPU_ISSET(i, &affinity)) { | |
77a5b13a MD |
32 | int node; |
33 | ||
93da3184 | 34 | CPU_SET(i, &test_affinity); |
544cdc88 MJ |
35 | |
36 | ret = sched_setaffinity(0, sizeof(test_affinity), | |
93da3184 | 37 | &test_affinity); |
544cdc88 MJ |
38 | ok(ret == 0, "Set affinity mask to CPU %d exclusively", i); |
39 | ||
40 | ok(sched_getcpu() == i, "sched_getcpu returns CPU %d", i); | |
41 | ok(rseq_current_cpu() == (unsigned int) i, "rseq_current_cpu returns CPU %d", i); | |
42 | ok(rseq_current_cpu_raw() == i, "rseq_current_cpu_raw returns CPU %d", i); | |
43 | ok(rseq_cpu_start() == (unsigned int) i, "rseq_cpu_start returns CPU %d", i); | |
77a5b13a MD |
44 | node = rseq_fallback_current_node(); |
45 | ok(rseq_fallback_current_node() == node, "rseq_fallback_current_node returns node %d", node); | |
93da3184 MD |
46 | CPU_CLR(i, &test_affinity); |
47 | } | |
48 | } | |
544cdc88 MJ |
49 | |
50 | ret = sched_setaffinity(0, sizeof(affinity), &affinity); | |
51 | ok(ret == 0, "Restore current thread initial affinity mask"); | |
93da3184 MD |
52 | } |
53 | ||
54 | int main(void) | |
55 | { | |
d1cdec98 MJ |
56 | /* |
57 | * Skip all tests if the rseq syscall is unavailable | |
58 | */ | |
8b34114a | 59 | if (rseq_available(RSEQ_AVAILABLE_QUERY_KERNEL)) { |
d1cdec98 MJ |
60 | plan_no_plan(); |
61 | } else { | |
62 | plan_skip_all("The rseq syscall is unavailable"); | |
63 | } | |
544cdc88 | 64 | |
93da3184 | 65 | if (rseq_register_current_thread()) { |
d1cdec98 | 66 | fail("rseq_register_current_thread(...) failed(%d): %s\n", |
93da3184 | 67 | errno, strerror(errno)); |
d1cdec98 MJ |
68 | goto end; |
69 | } else { | |
70 | pass("Registered current thread with rseq"); | |
93da3184 | 71 | } |
544cdc88 | 72 | |
93da3184 | 73 | test_cpu_pointer(); |
544cdc88 | 74 | |
93da3184 | 75 | if (rseq_unregister_current_thread()) { |
d1cdec98 | 76 | fail("rseq_unregister_current_thread(...) failed(%d): %s\n", |
93da3184 | 77 | errno, strerror(errno)); |
d1cdec98 MJ |
78 | goto end; |
79 | } else { | |
80 | pass("Unregistered current thread with rseq"); | |
93da3184 | 81 | } |
544cdc88 | 82 | |
d1cdec98 MJ |
83 | end: |
84 | exit(exit_status()); | |
93da3184 | 85 | } |