/**
* @brief Initializes PQoS library
*
* To satisfy dlock_init() requirements CAT is reset here.
* More sophisticated solution would be to look for unused CLOS here and
* pass it on to dlock_init().
*
* @return Operation status
* @retval 0 OK
* @retval <0 error
*/
static int init_pqos(void)
{
const struct pqos_cpuinfo *p_cpu = NULL;
const struct pqos_cap *p_cap = NULL;
struct pqos_config cfg;
int ret;
memset(&cfg, 0, sizeof(cfg));
cfg.fd_log = STDOUT_FILENO;
cfg.verbose = 0;
ret = pqos_init(&cfg);
if (ret != PQOS_RETVAL_OK) {
printf("Error initializing PQoS library!\n");
return -1;
}
/* Get CMT capability and CPU info pointer */
ret = pqos_cap_get(&p_cap, &p_cpu);
if (ret != PQOS_RETVAL_OK) {
pqos_fini();
printf("Error retrieving PQoS capabilities!\n");
return -1;
}
/* Reset CAT */
ret = pqos_alloc_reset(PQOS_REQUIRE_CDP_ANY);
if (ret != PQOS_RETVAL_OK) {
pqos_fini();
printf("Error resetting CAT!\n");
return -1;
}
return 0;
}
int main(int argc, char *argv[])
{
struct pqos_config cfg;
const struct pqos_cpuinfo *p_cpu = NULL;
const struct pqos_cap *p_cap = NULL;
const struct pqos_capability *cap_l3ca = NULL;
unsigned sock_count, *sockets = NULL;
int ret, exit_val = EXIT_SUCCESS;
memset(&cfg, 0, sizeof(cfg));
cfg.fd_log = STDOUT_FILENO;
cfg.verbose = 0;
/* PQoS Initialization - Check and initialize CAT and CMT capability */
ret = pqos_init(&cfg);
if (ret != PQOS_RETVAL_OK) {
printf("Error initializing PQoS library!\n");
exit_val = EXIT_FAILURE;
goto error_exit;
}
/* Get CMT capability and CPU info pointer */
ret = pqos_cap_get(&p_cap, &p_cpu);
if (ret != PQOS_RETVAL_OK) {
printf("Error retrieving PQoS capabilities!\n");
exit_val = EXIT_FAILURE;
goto error_exit;
}
if (argc == 2 && (!strcmp(argv[1], "-h") || !strcmp(argv[1], "-H"))) {
printf("Usage: %s\n\n", argv[0]);
goto error_exit;
}
/* Reset Api */
ret = pqos_alloc_reset(PQOS_REQUIRE_CDP_ANY, PQOS_REQUIRE_CDP_ANY,
PQOS_MBA_ANY);
if (ret != PQOS_RETVAL_OK)
printf("CAT reset failed!\n");
else
printf("CAT reset successful\n");
/* Get CPU socket information to set COS */
sockets = pqos_cpu_get_sockets(p_cpu, &sock_count);
if (sockets == NULL) {
printf("Error retrieving CPU socket information!\n");
exit_val = EXIT_FAILURE;
goto error_exit;
}
(void) pqos_cap_get_type(p_cap, PQOS_CAP_TYPE_L3CA, &cap_l3ca);
/* Print COS and associated cores */
print_allocation_config(cap_l3ca, sock_count, sockets, p_cpu);
error_exit:
/* reset and deallocate all the resources */
ret = pqos_fini();
if (ret != PQOS_RETVAL_OK)
printf("Error shutting down PQoS library!\n");
if (sockets != NULL)
free(sockets);
return exit_val;
}