static int __init setup_ktext(char *str)
{
if (str == NULL)
return -EINVAL;
/* If you have a leading "nocache", turn off ktext caching */
if (strncmp(str, "nocache", 7) == 0) {
ktext_nocache = 1;
pr_info("ktext: disabling local caching of kernel text\n");
str += 7;
if (*str == ',')
++str;
if (*str == '\0')
return 0;
}
ktext_arg_seen = 1;
/* Default setting: use a huge page */
if (strcmp(str, "huge") == 0)
pr_info("ktext: using one huge locally cached page\n");
/* Pay TLB cost but get no cache benefit: cache small pages locally */
else if (strcmp(str, "local") == 0) {
ktext_small = 1;
ktext_local = 1;
pr_info("ktext: using small pages with local caching\n");
}
/* Neighborhood cache ktext pages on all cpus. */
else if (strcmp(str, "all") == 0) {
ktext_small = 1;
ktext_all = 1;
pr_info("ktext: using maximal caching neighborhood\n");
}
/* Neighborhood ktext pages on specified mask */
else if (cpulist_parse(str, &ktext_mask) == 0) {
if (cpumask_weight(&ktext_mask) > 1) {
ktext_small = 1;
pr_info("ktext: using caching neighborhood %*pbl with small pages\n",
cpumask_pr_args(&ktext_mask));
} else {
pr_info("ktext: caching on cpu %*pbl with one huge page\n",
cpumask_pr_args(&ktext_mask));
}
}
else if (*str)
return -EINVAL;
return 0;
}
/*
* This wrapper function around hv_flush_remote() does several things:
*
* - Provides a return value error-checking panic path, since
* there's never any good reason for hv_flush_remote() to fail.
* - Accepts a 32-bit PFN rather than a 64-bit PA, which generally
* is the type that Linux wants to pass around anyway.
* - Canonicalizes that lengths of zero make cpumasks NULL.
* - Handles deferring TLB flushes for dataplane tiles.
* - Tracks remote interrupts in the per-cpu irq_cpustat_t.
*
* Note that we have to wait until the cache flush completes before
* updating the per-cpu last_cache_flush word, since otherwise another
* concurrent flush can race, conclude the flush has already
* completed, and start to use the page while it's still dirty
* remotely (running concurrently with the actual evict, presumably).
*/
void flush_remote(unsigned long cache_pfn, unsigned long cache_control,
const struct cpumask *cache_cpumask_orig,
HV_VirtAddr tlb_va, unsigned long tlb_length,
unsigned long tlb_pgsize,
const struct cpumask *tlb_cpumask_orig,
HV_Remote_ASID *asids, int asidcount)
{
int rc;
struct cpumask cache_cpumask_copy, tlb_cpumask_copy;
struct cpumask *cache_cpumask, *tlb_cpumask;
HV_PhysAddr cache_pa;
mb(); /* provided just to simplify "magic hypervisor" mode */
/*
* Canonicalize and copy the cpumasks.
*/
if (cache_cpumask_orig && cache_control) {
cpumask_copy(&cache_cpumask_copy, cache_cpumask_orig);
cache_cpumask = &cache_cpumask_copy;
} else {
cpumask_clear(&cache_cpumask_copy);
cache_cpumask = NULL;
}
if (cache_cpumask == NULL)
cache_control = 0;
if (tlb_cpumask_orig && tlb_length) {
cpumask_copy(&tlb_cpumask_copy, tlb_cpumask_orig);
tlb_cpumask = &tlb_cpumask_copy;
} else {
cpumask_clear(&tlb_cpumask_copy);
tlb_cpumask = NULL;
}
hv_flush_update(cache_cpumask, tlb_cpumask, tlb_va, tlb_length,
asids, asidcount);
cache_pa = (HV_PhysAddr)cache_pfn << PAGE_SHIFT;
rc = hv_flush_remote(cache_pa, cache_control,
cpumask_bits(cache_cpumask),
tlb_va, tlb_length, tlb_pgsize,
cpumask_bits(tlb_cpumask),
asids, asidcount);
if (rc == 0)
return;
pr_err("hv_flush_remote(%#llx, %#lx, %p [%*pb], %#lx, %#lx, %#lx, %p [%*pb], %p, %d) = %d\n",
cache_pa, cache_control, cache_cpumask,
cpumask_pr_args(&cache_cpumask_copy),
(unsigned long)tlb_va, tlb_length, tlb_pgsize, tlb_cpumask,
cpumask_pr_args(&tlb_cpumask_copy), asids, asidcount, rc);
panic("Unsafe to continue.");
}
void smp_send_stop(void)
{
unsigned long timeout;
if (num_online_cpus() > 1) {
cpumask_t mask;
cpumask_copy(&mask, cpu_online_mask);
cpumask_clear_cpu(smp_processor_id(), &mask);
if (system_state == SYSTEM_BOOTING ||
system_state == SYSTEM_RUNNING)
pr_crit("SMP: stopping secondary CPUs\n");
smp_cross_call(&mask, IPI_CPU_STOP);
}
/* Wait up to one second for other CPUs to stop */
timeout = USEC_PER_SEC;
while (num_online_cpus() > 1 && timeout--)
udelay(1);
if (num_online_cpus() > 1)
pr_warning("SMP: failed to stop secondary CPUs %*pbl\n",
cpumask_pr_args(cpu_online_mask));
}
static ssize_t show_rps_map(struct netdev_rx_queue *queue, char *buf)
{
struct rps_map *map;
cpumask_var_t mask;
int i, len;
if (!zalloc_cpumask_var(&mask, GFP_KERNEL))
return -ENOMEM;
rcu_read_lock();
map = rcu_dereference(queue->rps_map);
if (map)
for (i = 0; i < map->len; i++)
cpumask_set_cpu(map->cpus[i], mask);
len = snprintf(buf, PAGE_SIZE, "%*pb\n", cpumask_pr_args(mask));
rcu_read_unlock();
free_cpumask_var(mask);
return len < PAGE_SIZE ? len : -EINVAL;
}
static int ics_rtas_set_affinity(struct irq_data *d,
const struct cpumask *cpumask,
bool force)
{
unsigned int hw_irq = (unsigned int)irqd_to_hwirq(d);
int status;
int xics_status[2];
int irq_server;
if (hw_irq == XICS_IPI || hw_irq == XICS_IRQ_SPURIOUS)
return -1;
status = rtas_call(ibm_get_xive, 1, 3, xics_status, hw_irq);
if (status) {
printk(KERN_ERR "%s: ibm,get-xive irq=%u returns %d\n",
__func__, hw_irq, status);
return -1;
}
irq_server = xics_get_irq_server(d->irq, cpumask, 1);
if (irq_server == -1) {
pr_warning("%s: No online cpus in the mask %*pb for irq %d\n",
__func__, cpumask_pr_args(cpumask), d->irq);
return -1;
}
status = rtas_call(ibm_set_xive, 3, 1, NULL,
hw_irq, irq_server, xics_status[1]);
if (status) {
printk(KERN_ERR "%s: ibm,set-xive irq=%u returns %d\n",
__func__, hw_irq, status);
return -1;
}
return IRQ_SET_MASK_OK;
}
static int rps_sock_flow_sysctl(struct ctl_table *table, int write,
void __user *buffer, size_t *lenp, loff_t *ppos)
{
unsigned int orig_size, size;
int ret, i;
struct ctl_table tmp = {
.data = &size,
.maxlen = sizeof(size),
.mode = table->mode
};
struct rps_sock_flow_table *orig_sock_table, *sock_table;
static DEFINE_MUTEX(sock_flow_mutex);
mutex_lock(&sock_flow_mutex);
orig_sock_table = rcu_dereference_protected(rps_sock_flow_table,
lockdep_is_held(&sock_flow_mutex));
size = orig_size = orig_sock_table ? orig_sock_table->mask + 1 : 0;
ret = proc_dointvec(&tmp, write, buffer, lenp, ppos);
if (write) {
if (size) {
if (size > 1<<29) {
/* Enforce limit to prevent overflow */
mutex_unlock(&sock_flow_mutex);
return -EINVAL;
}
size = roundup_pow_of_two(size);
if (size != orig_size) {
sock_table =
vmalloc(RPS_SOCK_FLOW_TABLE_SIZE(size));
if (!sock_table) {
mutex_unlock(&sock_flow_mutex);
return -ENOMEM;
}
rps_cpu_mask = roundup_pow_of_two(nr_cpu_ids) - 1;
sock_table->mask = size - 1;
} else
sock_table = orig_sock_table;
for (i = 0; i < size; i++)
sock_table->ents[i] = RPS_NO_CPU;
} else
sock_table = NULL;
if (sock_table != orig_sock_table) {
rcu_assign_pointer(rps_sock_flow_table, sock_table);
if (sock_table)
static_key_slow_inc(&rps_needed);
if (orig_sock_table) {
static_key_slow_dec(&rps_needed);
synchronize_rcu();
vfree(orig_sock_table);
}
}
}
mutex_unlock(&sock_flow_mutex);
return ret;
}
#endif /* CONFIG_RPS */
#ifdef CONFIG_NET_FLOW_LIMIT
static DEFINE_MUTEX(flow_limit_update_mutex);
static int flow_limit_cpu_sysctl(struct ctl_table *table, int write,
void __user *buffer, size_t *lenp,
loff_t *ppos)
{
struct sd_flow_limit *cur;
struct softnet_data *sd;
cpumask_var_t mask;
int i, len, ret = 0;
if (!alloc_cpumask_var(&mask, GFP_KERNEL))
return -ENOMEM;
if (write) {
ret = cpumask_parse_user(buffer, *lenp, mask);
if (ret)
goto done;
mutex_lock(&flow_limit_update_mutex);
len = sizeof(*cur) + netdev_flow_limit_table_len;
for_each_possible_cpu(i) {
sd = &per_cpu(softnet_data, i);
cur = rcu_dereference_protected(sd->flow_limit,
lockdep_is_held(&flow_limit_update_mutex));
if (cur && !cpumask_test_cpu(i, mask)) {
RCU_INIT_POINTER(sd->flow_limit, NULL);
synchronize_rcu();
kfree(cur);
} else if (!cur && cpumask_test_cpu(i, mask)) {
cur = kzalloc_node(len, GFP_KERNEL,
cpu_to_node(i));
if (!cur) {
/* not unwinding previous changes */
ret = -ENOMEM;
goto write_unlock;
}
cur->num_buckets = netdev_flow_limit_table_len;
rcu_assign_pointer(sd->flow_limit, cur);
}
}
write_unlock:
mutex_unlock(&flow_limit_update_mutex);
} else {
char kbuf[128];
if (*ppos || !*lenp) {
*lenp = 0;
goto done;
}
cpumask_clear(mask);
rcu_read_lock();
for_each_possible_cpu(i) {
sd = &per_cpu(softnet_data, i);
if (rcu_dereference(sd->flow_limit))
cpumask_set_cpu(i, mask);
}
rcu_read_unlock();
len = min(sizeof(kbuf) - 1, *lenp);
len = scnprintf(kbuf, len, "%*pb", cpumask_pr_args(mask));
if (!len) {
*lenp = 0;
goto done;
}
if (len < *lenp)
kbuf[len++] = '\n';
if (copy_to_user(buffer, kbuf, len)) {
ret = -EFAULT;
goto done;
}
*lenp = len;
*ppos += len;
}
done:
free_cpumask_var(mask);
return ret;
}
static int sched_domain_debug_one(struct sched_domain *sd, int cpu, int level,
struct cpumask *groupmask)
{
struct sched_group *group = sd->groups;
cpumask_clear(groupmask);
printk(KERN_DEBUG "%*s domain-%d: ", level, "", level);
if (!(sd->flags & SD_LOAD_BALANCE)) {
printk("does not load-balance\n");
if (sd->parent)
printk(KERN_ERR "ERROR: !SD_LOAD_BALANCE domain has parent");
return -1;
}
printk(KERN_CONT "span=%*pbl level=%s\n",
cpumask_pr_args(sched_domain_span(sd)), sd->name);
if (!cpumask_test_cpu(cpu, sched_domain_span(sd))) {
printk(KERN_ERR "ERROR: domain->span does not contain CPU%d\n", cpu);
}
if (!cpumask_test_cpu(cpu, sched_group_span(group))) {
printk(KERN_ERR "ERROR: domain->groups does not contain CPU%d\n", cpu);
}
printk(KERN_DEBUG "%*s groups:", level + 1, "");
do {
if (!group) {
printk("\n");
printk(KERN_ERR "ERROR: group is NULL\n");
break;
}
if (!cpumask_weight(sched_group_span(group))) {
printk(KERN_CONT "\n");
printk(KERN_ERR "ERROR: empty group\n");
break;
}
if (!(sd->flags & SD_OVERLAP) &&
cpumask_intersects(groupmask, sched_group_span(group))) {
printk(KERN_CONT "\n");
printk(KERN_ERR "ERROR: repeated CPUs\n");
break;
}
cpumask_or(groupmask, groupmask, sched_group_span(group));
printk(KERN_CONT " %d:{ span=%*pbl",
group->sgc->id,
cpumask_pr_args(sched_group_span(group)));
if ((sd->flags & SD_OVERLAP) &&
!cpumask_equal(group_balance_mask(group), sched_group_span(group))) {
printk(KERN_CONT " mask=%*pbl",
cpumask_pr_args(group_balance_mask(group)));
}
if (group->sgc->capacity != SCHED_CAPACITY_SCALE)
printk(KERN_CONT " cap=%lu", group->sgc->capacity);
if (group == sd->groups && sd->child &&
!cpumask_equal(sched_domain_span(sd->child),
sched_group_span(group))) {
printk(KERN_ERR "ERROR: domain->groups does not match domain->child\n");
}
printk(KERN_CONT " }");
group = group->next;
if (group != sd->groups)
printk(KERN_CONT ",");
} while (group != sd->groups);
printk(KERN_CONT "\n");
if (!cpumask_equal(sched_domain_span(sd), groupmask))
printk(KERN_ERR "ERROR: groups don't span domain->span\n");
if (sd->parent &&
!cpumask_subset(groupmask, sched_domain_span(sd->parent)))
printk(KERN_ERR "ERROR: parent span is not a superset of domain->span\n");
return 0;
}
static int show_schedstat(struct seq_file *seq, void *v)
{
int cpu;
if (v == (void *)1) {
seq_printf(seq, "version %d\n", SCHEDSTAT_VERSION);
seq_printf(seq, "timestamp %lu\n", jiffies);
} else {
struct rq *rq;
#ifdef CONFIG_SMP
struct sched_domain *sd;
int dcount = 0;
#endif
cpu = (unsigned long)(v - 2);
rq = cpu_rq(cpu);
/* runqueue-specific stats */
seq_printf(seq,
"cpu%d %u 0 %u %u %u %u %llu %llu %lu %u",
cpu, rq->yld_count,
rq->sched_count, rq->sched_goidle,
rq->ttwu_count, rq->ttwu_local,
rq->rq_cpu_time,
rq->rq_sched_info.run_delay, rq->rq_sched_info.pcount,
rq->yield_sleep_count);
seq_printf(seq, "\n");
#ifdef CONFIG_SMP
/* domain-specific stats */
rcu_read_lock();
for_each_domain(cpu, sd) {
enum cpu_idle_type itype;
seq_printf(seq, "domain%d %*pb", dcount++,
cpumask_pr_args(sched_domain_span(sd)));
for (itype = CPU_IDLE; itype < CPU_MAX_IDLE_TYPES;
itype++) {
seq_printf(seq, " %u %u %u %u %u %u %u %u",
sd->lb_count[itype],
sd->lb_balanced[itype],
sd->lb_failed[itype],
sd->lb_imbalance[itype],
sd->lb_gained[itype],
sd->lb_hot_gained[itype],
sd->lb_nobusyq[itype],
sd->lb_nobusyg[itype]);
}
seq_printf(seq,
" %u %u %u %u %u %u %u %u %u %u %u %u\n",
sd->alb_count, sd->alb_failed, sd->alb_pushed,
sd->sbe_count, sd->sbe_balanced, sd->sbe_pushed,
sd->sbf_count, sd->sbf_balanced, sd->sbf_pushed,
sd->ttwu_wake_remote, sd->ttwu_move_affine,
sd->ttwu_move_balance);
}
rcu_read_unlock();
#endif
}
return 0;
}
/*
* This maps the physical memory to kernel virtual address space, a total
* of max_low_pfn pages, by creating page tables starting from address
* PAGE_OFFSET.
*
* This routine transitions us from using a set of compiled-in large
* pages to using some more precise caching, including removing access
* to code pages mapped at PAGE_OFFSET (executed only at MEM_SV_START)
* marking read-only data as locally cacheable, striping the remaining
* .data and .bss across all the available tiles, and removing access
* to pages above the top of RAM (thus ensuring a page fault from a bad
* virtual address rather than a hypervisor shoot down for accessing
* memory outside the assigned limits).
*/
static void __init kernel_physical_mapping_init(pgd_t *pgd_base)
{
unsigned long long irqmask;
unsigned long address, pfn;
pmd_t *pmd;
pte_t *pte;
int pte_ofs;
const struct cpumask *my_cpu_mask = cpumask_of(smp_processor_id());
struct cpumask kstripe_mask;
int rc, i;
if (ktext_arg_seen && ktext_hash) {
pr_warn("warning: \"ktext\" boot argument ignored if \"kcache_hash\" sets up text hash-for-home\n");
ktext_small = 0;
}
if (kdata_arg_seen && kdata_hash) {
pr_warn("warning: \"kdata\" boot argument ignored if \"kcache_hash\" sets up data hash-for-home\n");
}
if (kdata_huge && !hash_default) {
pr_warn("warning: disabling \"kdata=huge\"; requires kcache_hash=all or =allbutstack\n");
kdata_huge = 0;
}
/*
* Set up a mask for cpus to use for kernel striping.
* This is normally all cpus, but minus dataplane cpus if any.
* If the dataplane covers the whole chip, we stripe over
* the whole chip too.
*/
cpumask_copy(&kstripe_mask, cpu_possible_mask);
if (!kdata_arg_seen)
kdata_mask = kstripe_mask;
/* Allocate and fill in L2 page tables */
for (i = 0; i < MAX_NUMNODES; ++i) {
#ifdef CONFIG_HIGHMEM
unsigned long end_pfn = node_lowmem_end_pfn[i];
#else
unsigned long end_pfn = node_end_pfn[i];
#endif
unsigned long end_huge_pfn = 0;
/* Pre-shatter the last huge page to allow per-cpu pages. */
if (kdata_huge)
end_huge_pfn = end_pfn - (HPAGE_SIZE >> PAGE_SHIFT);
pfn = node_start_pfn[i];
/* Allocate enough memory to hold L2 page tables for node. */
init_prealloc_ptes(i, end_pfn - pfn);
address = (unsigned long) pfn_to_kaddr(pfn);
while (pfn < end_pfn) {
BUG_ON(address & (HPAGE_SIZE-1));
pmd = get_pmd(pgtables, address);
pte = get_prealloc_pte(pfn);
if (pfn < end_huge_pfn) {
pgprot_t prot = init_pgprot(address);
*(pte_t *)pmd = pte_mkhuge(pfn_pte(pfn, prot));
for (pte_ofs = 0; pte_ofs < PTRS_PER_PTE;
pfn++, pte_ofs++, address += PAGE_SIZE)
pte[pte_ofs] = pfn_pte(pfn, prot);
} else {
if (kdata_huge)
printk(KERN_DEBUG "pre-shattered huge page at %#lx\n",
address);
for (pte_ofs = 0; pte_ofs < PTRS_PER_PTE;
pfn++, pte_ofs++, address += PAGE_SIZE) {
pgprot_t prot = init_pgprot(address);
pte[pte_ofs] = pfn_pte(pfn, prot);
}
assign_pte(pmd, pte);
}
}
}
/*
* Set or check ktext_map now that we have cpu_possible_mask
* and kstripe_mask to work with.
*/
if (ktext_all)
cpumask_copy(&ktext_mask, cpu_possible_mask);
else if (ktext_nondataplane)
ktext_mask = kstripe_mask;
else if (!cpumask_empty(&ktext_mask)) {
/* Sanity-check any mask that was requested */
struct cpumask bad;
cpumask_andnot(&bad, &ktext_mask, cpu_possible_mask);
cpumask_and(&ktext_mask, &ktext_mask, cpu_possible_mask);
if (!cpumask_empty(&bad))
pr_info("ktext: not using unavailable cpus %*pbl\n",
cpumask_pr_args(&bad));
if (cpumask_empty(&ktext_mask)) {
pr_warn("ktext: no valid cpus; caching on %d\n",
smp_processor_id());
cpumask_copy(&ktext_mask,
cpumask_of(smp_processor_id()));
}
}
address = MEM_SV_START;
pmd = get_pmd(pgtables, address);
pfn = 0; /* code starts at PA 0 */
if (ktext_small) {
/* Allocate an L2 PTE for the kernel text */
int cpu = 0;
pgprot_t prot = construct_pgprot(PAGE_KERNEL_EXEC,
PAGE_HOME_IMMUTABLE);
if (ktext_local) {
if (ktext_nocache)
prot = hv_pte_set_mode(prot,
HV_PTE_MODE_UNCACHED);
else
prot = hv_pte_set_mode(prot,
HV_PTE_MODE_CACHE_NO_L3);
} else {
prot = hv_pte_set_mode(prot,
HV_PTE_MODE_CACHE_TILE_L3);
cpu = cpumask_first(&ktext_mask);
prot = ktext_set_nocache(prot);
}
BUG_ON(address != (unsigned long)_text);
pte = NULL;
for (; address < (unsigned long)_einittext;
pfn++, address += PAGE_SIZE) {
pte_ofs = pte_index(address);
if (pte_ofs == 0) {
if (pte)
assign_pte(pmd++, pte);
pte = alloc_pte();
}
if (!ktext_local) {
prot = set_remote_cache_cpu(prot, cpu);
cpu = cpumask_next(cpu, &ktext_mask);
if (cpu == NR_CPUS)
cpu = cpumask_first(&ktext_mask);
}
pte[pte_ofs] = pfn_pte(pfn, prot);
}
if (pte)
assign_pte(pmd, pte);
} else {
pte_t pteval = pfn_pte(0, PAGE_KERNEL_EXEC);
pteval = pte_mkhuge(pteval);
if (ktext_hash) {
pteval = hv_pte_set_mode(pteval,
HV_PTE_MODE_CACHE_HASH_L3);
pteval = ktext_set_nocache(pteval);
} else
if (cpumask_weight(&ktext_mask) == 1) {
pteval = set_remote_cache_cpu(pteval,
cpumask_first(&ktext_mask));
pteval = hv_pte_set_mode(pteval,
HV_PTE_MODE_CACHE_TILE_L3);
pteval = ktext_set_nocache(pteval);
} else if (ktext_nocache)
pteval = hv_pte_set_mode(pteval,
HV_PTE_MODE_UNCACHED);
else
pteval = hv_pte_set_mode(pteval,
HV_PTE_MODE_CACHE_NO_L3);
for (; address < (unsigned long)_einittext;
pfn += PFN_DOWN(HPAGE_SIZE), address += HPAGE_SIZE)
*(pte_t *)(pmd++) = pfn_pte(pfn, pteval);
}
/* Set swapper_pgprot here so it is flushed to memory right away. */
swapper_pgprot = init_pgprot((unsigned long)swapper_pg_dir);
/*
* Since we may be changing the caching of the stack and page
* table itself, we invoke an assembly helper to do the
* following steps:
*
* - flush the cache so we start with an empty slate
* - install pgtables[] as the real page table
* - flush the TLB so the new page table takes effect
*/
irqmask = interrupt_mask_save_mask();
interrupt_mask_set_mask(-1ULL);
rc = flush_and_install_context(__pa(pgtables),
init_pgprot((unsigned long)pgtables),
__this_cpu_read(current_asid),
cpumask_bits(my_cpu_mask));
interrupt_mask_restore_mask(irqmask);
BUG_ON(rc != 0);
/* Copy the page table back to the normal swapper_pg_dir. */
memcpy(pgd_base, pgtables, sizeof(pgtables));
__install_page_table(pgd_base, __this_cpu_read(current_asid),
swapper_pgprot);
/*
* We just read swapper_pgprot and thus brought it into the cache,
* with its new home & caching mode. When we start the other CPUs,
* they're going to reference swapper_pgprot via their initial fake
* VA-is-PA mappings, which cache everything locally. At that
* time, if it's in our cache with a conflicting home, the
* simulator's coherence checker will complain. So, flush it out
* of our cache; we're not going to ever use it again anyway.
*/
__insn_finv(&swapper_pgprot);
}
static int
c_show(struct seq_file *f, void *slot)
{
/* high-level stuff */
seq_printf(f, "CPU count\t: %u\n"
"CPU list\t: %*pbl\n"
"vendor_id\t: Tensilica\n"
"model\t\t: Xtensa " XCHAL_HW_VERSION_NAME "\n"
"core ID\t\t: " XCHAL_CORE_ID "\n"
"build ID\t: 0x%x\n"
"byte order\t: %s\n"
"cpu MHz\t\t: %lu.%02lu\n"
"bogomips\t: %lu.%02lu\n",
num_online_cpus(),
cpumask_pr_args(cpu_online_mask),
XCHAL_BUILD_UNIQUE_ID,
XCHAL_HAVE_BE ? "big" : "little",
ccount_freq/1000000,
(ccount_freq/10000) % 100,
loops_per_jiffy/(500000/HZ),
(loops_per_jiffy/(5000/HZ)) % 100);
seq_printf(f,"flags\t\t: "
#if XCHAL_HAVE_NMI
"nmi "
#endif
#if XCHAL_HAVE_DEBUG
"debug "
# if XCHAL_HAVE_OCD
"ocd "
# endif
#endif
#if XCHAL_HAVE_DENSITY
"density "
#endif
#if XCHAL_HAVE_BOOLEANS
"boolean "
#endif
#if XCHAL_HAVE_LOOPS
"loop "
#endif
#if XCHAL_HAVE_NSA
"nsa "
#endif
#if XCHAL_HAVE_MINMAX
"minmax "
#endif
#if XCHAL_HAVE_SEXT
"sext "
#endif
#if XCHAL_HAVE_CLAMPS
"clamps "
#endif
#if XCHAL_HAVE_MAC16
"mac16 "
#endif
#if XCHAL_HAVE_MUL16
"mul16 "
#endif
#if XCHAL_HAVE_MUL32
"mul32 "
#endif
#if XCHAL_HAVE_MUL32_HIGH
"mul32h "
#endif
#if XCHAL_HAVE_FP
"fpu "
#endif
#if XCHAL_HAVE_S32C1I
"s32c1i "
#endif
"\n");
/* Registers. */
seq_printf(f,"physical aregs\t: %d\n"
"misc regs\t: %d\n"
"ibreak\t\t: %d\n"
"dbreak\t\t: %d\n",
XCHAL_NUM_AREGS,
XCHAL_NUM_MISC_REGS,
XCHAL_NUM_IBREAK,
XCHAL_NUM_DBREAK);
/* Interrupt. */
seq_printf(f,"num ints\t: %d\n"
"ext ints\t: %d\n"
"int levels\t: %d\n"
"timers\t\t: %d\n"
"debug level\t: %d\n",
XCHAL_NUM_INTERRUPTS,
XCHAL_NUM_EXTINTERRUPTS,
XCHAL_NUM_INTLEVELS,
XCHAL_NUM_TIMERS,
XCHAL_DEBUGLEVEL);
/* Cache */
seq_printf(f,"icache line size: %d\n"
"icache ways\t: %d\n"
"icache size\t: %d\n"
"icache flags\t: "
#if XCHAL_ICACHE_LINE_LOCKABLE
"lock "
#endif
"\n"
"dcache line size: %d\n"
"dcache ways\t: %d\n"
"dcache size\t: %d\n"
"dcache flags\t: "
#if XCHAL_DCACHE_IS_WRITEBACK
"writeback "
#endif
#if XCHAL_DCACHE_LINE_LOCKABLE
"lock "
#endif
"\n",
XCHAL_ICACHE_LINESIZE,
XCHAL_ICACHE_WAYS,
XCHAL_ICACHE_SIZE,
XCHAL_DCACHE_LINESIZE,
XCHAL_DCACHE_WAYS,
XCHAL_DCACHE_SIZE);
return 0;
}
