projects / linux-2.6-block.git / blame
| Commit | Line | Data |
|---|---|---|
| 2874c5fd | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
| ef186331 CB |
2 | /* |
| 3 | * Copyright 2016, Cyril Bur, IBM Corp. | |
| 4 | * | |
| ef186331 CB |
5 | * Sending one self a signal should always get delivered. |
| 6 | */ | |
| 7 | ||
| 8 | #include <errno.h> | |
| 9 | #include <stdlib.h> | |
| 10 | #include <stdio.h> | |
| 11 | #include <string.h> | |
| 12 | #include <signal.h> | |
| 13 | #include <unistd.h> | |
| 14 | ||
| 15 | #include <altivec.h> | |
| 16 | ||
| 17 | #include "utils.h" | |
| 18 | #include "../tm/tm.h" | |
| 19 | ||
| 20 | #define MAX_ATTEMPT 500000 | |
| 21 | #define TIMEOUT 10 | |
| 22 | ||
| 23 | extern long tm_signal_self(pid_t pid, int sig, long *ret); | |
| 24 | ||
| 25 | static sig_atomic_t signaled; | |
| 26 | static sig_atomic_t fail; | |
| 27 | ||
| 28 | static void signal_handler(int sig) | |
| 29 | { | |
| 30 | if (tcheck_active()) { | |
| 31 | fail = 2; | |
| 32 | return; | |
| 33 | } | |
| 34 | ||
| 35 | if (sig == SIGUSR1) | |
| 36 | signaled = 1; | |
| 37 | else | |
| 38 | fail = 1; | |
| 39 | } | |
| 40 | ||
| 41 | static int test_signal_tm() | |
| 42 | { | |
| 43 | int i; | |
| 44 | struct sigaction act; | |
| 45 | ||
| 46 | act.sa_handler = signal_handler; | |
| 47 | act.sa_flags = 0; | |
| 48 | sigemptyset(&act.sa_mask); | |
| 49 | if (sigaction(SIGUSR1, &act, NULL) < 0) { | |
| 50 | perror("sigaction SIGUSR1"); | |
| 51 | exit(1); | |
| 52 | } | |
| 53 | if (sigaction(SIGALRM, &act, NULL) < 0) { | |
| 54 | perror("sigaction SIGALRM"); | |
| 55 | exit(1); | |
| 56 | } | |
| 57 | ||
| 58 | SKIP_IF(!have_htm()); | |
| 59 | ||
| 60 | for (i = 0; i < MAX_ATTEMPT; i++) { | |
| 61 | /* | |
| 62 | * If anything bad happens in ASM and we fail to set ret | |
| 63 | * because *handwave* TM this will cause failure | |
| 64 | */ | |
| 65 | long ret = 0xdead; | |
| 66 | long rc = 0xbeef; | |
| 67 | ||
| 68 | alarm(0); /* Disable any pending */ | |
| 69 | signaled = 0; | |
| 70 | alarm(TIMEOUT); | |
| 71 | FAIL_IF(tcheck_transactional()); | |
| 72 | rc = tm_signal_self(getpid(), SIGUSR1, &ret); | |
| 73 | if (ret == 0xdead) | |
| 74 | /* | |
| 75 | * This basically means the transaction aborted before we | |
| 76 | * even got to the suspend... this is crazy but it | |
| 77 | * happens. | |
| 78 | * Yes this also means we might never make forward | |
| 79 | * progress... the alarm() will trip eventually... | |
| 80 | */ | |
| 81 | continue; | |
| 82 | ||
| 83 | if (rc || ret) { | |
| 84 | /* Ret is actually an errno */ | |
| 85 | printf("TEXASR 0x%016lx, TFIAR 0x%016lx\n", | |
| 86 | __builtin_get_texasr(), __builtin_get_tfiar()); | |
| 87 | fprintf(stderr, "(%d) Fail reason: %d rc=0x%lx ret=0x%lx\n", | |
| 88 | i, fail, rc, ret); | |
| 89 | FAIL_IF(ret); | |
| 90 | } | |
| 91 | while(!signaled && !fail) | |
| 92 | asm volatile("": : :"memory"); | |
| 93 | if (!signaled) { | |
| 94 | fprintf(stderr, "(%d) Fail reason: %d rc=0x%lx ret=0x%lx\n", | |
| 95 | i, fail, rc, ret); | |
| 96 | FAIL_IF(fail); /* For the line number */ | |
| 97 | } | |
| 98 | } | |
| 99 | ||
| 100 | return 0; | |
| 101 | } | |
| 102 | ||
| 103 | int main(void) | |
| 104 | { | |
| 105 | return test_harness(test_signal_tm, "signal_tm"); | |
| 106 | } |