static void __init
check_for_logical_procs (void)
{
pal_logical_to_physical_t info;
s64 status;
status = ia64_pal_logical_to_phys(0, &info);
if (status == -1) {
printk(KERN_INFO "No logical to physical processor mapping "
"available\n");
return;
}
if (status) {
printk(KERN_ERR "ia64_pal_logical_to_phys failed with %ld\n",
status);
return;
}
/*
* Total number of siblings that BSP has. Though not all of them
* may have booted successfully. The correct number of siblings
* booted is in info.overview_num_log.
*/
smp_num_siblings = info.overview_tpc;
smp_num_cpucores = info.overview_cpp;
}
/*
* identify_siblings(cpu) gets called from identify_cpu. This populates the
* information related to logical execution units in per_cpu_data structure.
*/
void __devinit
identify_siblings(struct cpuinfo_ia64 *c)
{
s64 status;
u16 pltid;
pal_logical_to_physical_t info;
if (smp_num_cpucores == 1 && smp_num_siblings == 1)
return;
if ((status = ia64_pal_logical_to_phys(-1, &info)) != PAL_STATUS_SUCCESS) {
printk(KERN_ERR "ia64_pal_logical_to_phys failed with %ld\n",
status);
return;
}
if ((status = ia64_sal_physical_id_info(&pltid)) != PAL_STATUS_SUCCESS) {
printk(KERN_ERR "ia64_sal_pltid failed with %ld\n", status);
return;
}
c->socket_id = (pltid << 8) | info.overview_ppid;
c->cores_per_socket = info.overview_cpp;
c->threads_per_core = info.overview_tpc;
c->num_log = info.overview_num_log;
c->core_id = info.log1_cid;
c->thread_id = info.log1_tid;
}
/*
* identify_siblings(cpu) gets called from identify_cpu. This populates the
* information related to logical execution units in per_cpu_data structure.
*/
void __devinit
identify_siblings(struct cpuinfo_ia64 *c)
{
long status;
u16 pltid;
pal_logical_to_physical_t info;
status = ia64_pal_logical_to_phys(-1, &info);
if (status != PAL_STATUS_SUCCESS) {
if (status != PAL_STATUS_UNIMPLEMENTED) {
printk(KERN_ERR
"ia64_pal_logical_to_phys failed with %ld\n",
status);
return;
}
info.overview_ppid = 0;
info.overview_cpp = 1;
info.overview_tpc = 1;
}
status = ia64_sal_physical_id_info(&pltid);
if (status != PAL_STATUS_SUCCESS) {
if (status != PAL_STATUS_UNIMPLEMENTED)
printk(KERN_ERR
"ia64_sal_pltid failed with %ld\n",
status);
return;
}
c->socket_id = (pltid << 8) | info.overview_ppid;
if (info.overview_cpp == 1 && info.overview_tpc == 1)
return;
c->cores_per_socket = info.overview_cpp;
c->threads_per_core = info.overview_tpc;
c->num_log = info.overview_num_log;
c->core_id = info.log1_cid;
c->thread_id = info.log1_tid;
}
