151 lines
3.0 KiB
C
151 lines
3.0 KiB
C
/*
|
|
* Copyright 2015, Michael Neuling, IBM Corp.
|
|
* Licensed under GPLv2.
|
|
*
|
|
* Original: Michael Neuling 3/4/2014
|
|
* Modified: Rashmica Gupta 8/12/2015
|
|
*
|
|
* Check if any of the Transaction Memory SPRs get corrupted.
|
|
* - TFIAR - stores address of location of transaction failure
|
|
* - TFHAR - stores address of software failure handler (if transaction
|
|
* fails)
|
|
* - TEXASR - lots of info about the transacion(s)
|
|
*
|
|
* (1) create more threads than cpus
|
|
* (2) in each thread:
|
|
* (a) set TFIAR and TFHAR a unique value
|
|
* (b) loop for awhile, continually checking to see if
|
|
* either register has been corrupted.
|
|
*
|
|
* (3) Loop:
|
|
* (a) begin transaction
|
|
* (b) abort transaction
|
|
* (c) check TEXASR to see if FS has been corrupted
|
|
*
|
|
*/
|
|
|
|
#define _GNU_SOURCE
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <unistd.h>
|
|
#include <pthread.h>
|
|
#include <string.h>
|
|
|
|
#include "utils.h"
|
|
#include "tm.h"
|
|
|
|
int num_loops = 10000;
|
|
int passed = 1;
|
|
|
|
void tfiar_tfhar(void *in)
|
|
{
|
|
int i, cpu;
|
|
unsigned long tfhar, tfhar_rd, tfiar, tfiar_rd;
|
|
cpu_set_t cpuset;
|
|
|
|
CPU_ZERO(&cpuset);
|
|
cpu = (unsigned long)in >> 1;
|
|
CPU_SET(cpu, &cpuset);
|
|
sched_setaffinity(0, sizeof(cpuset), &cpuset);
|
|
|
|
/* TFIAR: Last bit has to be high so userspace can read register */
|
|
tfiar = ((unsigned long)in) + 1;
|
|
tfiar += 2;
|
|
mtspr(SPRN_TFIAR, tfiar);
|
|
|
|
/* TFHAR: Last two bits are reserved */
|
|
tfhar = ((unsigned long)in);
|
|
tfhar &= ~0x3UL;
|
|
tfhar += 4;
|
|
mtspr(SPRN_TFHAR, tfhar);
|
|
|
|
for (i = 0; i < num_loops; i++) {
|
|
tfhar_rd = mfspr(SPRN_TFHAR);
|
|
tfiar_rd = mfspr(SPRN_TFIAR);
|
|
if ( (tfhar != tfhar_rd) || (tfiar != tfiar_rd) ) {
|
|
passed = 0;
|
|
return;
|
|
}
|
|
}
|
|
return;
|
|
}
|
|
|
|
void texasr(void *in)
|
|
{
|
|
unsigned long i;
|
|
uint64_t result = 0;
|
|
|
|
for (i = 0; i < num_loops; i++) {
|
|
asm __volatile__(
|
|
"tbegin.;"
|
|
"beq 3f ;"
|
|
"tabort. 0 ;"
|
|
"tend.;"
|
|
|
|
/* Abort handler */
|
|
"3: ;"
|
|
::: "memory");
|
|
|
|
/* Check the TEXASR */
|
|
result = mfspr(SPRN_TEXASR);
|
|
if ((result & TEXASR_FS) == 0) {
|
|
passed = 0;
|
|
return;
|
|
}
|
|
}
|
|
return;
|
|
}
|
|
|
|
int test_tmspr()
|
|
{
|
|
pthread_t *thread;
|
|
int thread_num;
|
|
unsigned long i;
|
|
|
|
SKIP_IF(!have_htm());
|
|
|
|
/* To cause some context switching */
|
|
thread_num = 10 * sysconf(_SC_NPROCESSORS_ONLN);
|
|
|
|
thread = malloc(thread_num * sizeof(pthread_t));
|
|
if (thread == NULL)
|
|
return EXIT_FAILURE;
|
|
|
|
/* Test TFIAR and TFHAR */
|
|
for (i = 0; i < thread_num; i += 2) {
|
|
if (pthread_create(&thread[i], NULL, (void *)tfiar_tfhar,
|
|
(void *)i))
|
|
return EXIT_FAILURE;
|
|
}
|
|
/* Test TEXASR */
|
|
for (i = 1; i < thread_num; i += 2) {
|
|
if (pthread_create(&thread[i], NULL, (void *)texasr, (void *)i))
|
|
return EXIT_FAILURE;
|
|
}
|
|
|
|
for (i = 0; i < thread_num; i++) {
|
|
if (pthread_join(thread[i], NULL) != 0)
|
|
return EXIT_FAILURE;
|
|
}
|
|
|
|
free(thread);
|
|
|
|
if (passed)
|
|
return 0;
|
|
else
|
|
return 1;
|
|
}
|
|
|
|
int main(int argc, char *argv[])
|
|
{
|
|
if (argc > 1) {
|
|
if (strcmp(argv[1], "-h") == 0) {
|
|
printf("Syntax:\t [<num loops>]\n");
|
|
return 0;
|
|
} else {
|
|
num_loops = atoi(argv[1]);
|
|
}
|
|
}
|
|
return test_harness(test_tmspr, "tm_tmspr");
|
|
}
|