linux/tools/testing/selftests/powerpc/signal/signal_tm.c
Thomas Gleixner 2874c5fd28 treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
Based on 1 normalized pattern(s):

  this program is free software you can redistribute it and or modify
  it under the terms of the gnu general public license as published by
  the free software foundation either version 2 of the license or at
  your option any later version

extracted by the scancode license scanner the SPDX license identifier

  GPL-2.0-or-later

has been chosen to replace the boilerplate/reference in 3029 file(s).

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Allison Randal <allison@lohutok.net>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190527070032.746973796@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-05-30 11:26:32 -07:00

107 lines
2.1 KiB
C

// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Copyright 2016, Cyril Bur, IBM Corp.
*
* Sending one self a signal should always get delivered.
*/
#include <errno.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <signal.h>
#include <unistd.h>
#include <altivec.h>
#include "utils.h"
#include "../tm/tm.h"
#define MAX_ATTEMPT 500000
#define TIMEOUT 10
extern long tm_signal_self(pid_t pid, int sig, long *ret);
static sig_atomic_t signaled;
static sig_atomic_t fail;
static void signal_handler(int sig)
{
if (tcheck_active()) {
fail = 2;
return;
}
if (sig == SIGUSR1)
signaled = 1;
else
fail = 1;
}
static int test_signal_tm()
{
int i;
struct sigaction act;
act.sa_handler = signal_handler;
act.sa_flags = 0;
sigemptyset(&act.sa_mask);
if (sigaction(SIGUSR1, &act, NULL) < 0) {
perror("sigaction SIGUSR1");
exit(1);
}
if (sigaction(SIGALRM, &act, NULL) < 0) {
perror("sigaction SIGALRM");
exit(1);
}
SKIP_IF(!have_htm());
for (i = 0; i < MAX_ATTEMPT; i++) {
/*
* If anything bad happens in ASM and we fail to set ret
* because *handwave* TM this will cause failure
*/
long ret = 0xdead;
long rc = 0xbeef;
alarm(0); /* Disable any pending */
signaled = 0;
alarm(TIMEOUT);
FAIL_IF(tcheck_transactional());
rc = tm_signal_self(getpid(), SIGUSR1, &ret);
if (ret == 0xdead)
/*
* This basically means the transaction aborted before we
* even got to the suspend... this is crazy but it
* happens.
* Yes this also means we might never make forward
* progress... the alarm() will trip eventually...
*/
continue;
if (rc || ret) {
/* Ret is actually an errno */
printf("TEXASR 0x%016lx, TFIAR 0x%016lx\n",
__builtin_get_texasr(), __builtin_get_tfiar());
fprintf(stderr, "(%d) Fail reason: %d rc=0x%lx ret=0x%lx\n",
i, fail, rc, ret);
FAIL_IF(ret);
}
while(!signaled && !fail)
asm volatile("": : :"memory");
if (!signaled) {
fprintf(stderr, "(%d) Fail reason: %d rc=0x%lx ret=0x%lx\n",
i, fail, rc, ret);
FAIL_IF(fail); /* For the line number */
}
}
return 0;
}
int main(void)
{
return test_harness(test_signal_tm, "signal_tm");
}