diff options
Diffstat (limited to 'arch/x86/kernel/tlb_uv.c')
| -rw-r--r-- | arch/x86/kernel/tlb_uv.c | 793 |
1 files changed, 0 insertions, 793 deletions
diff --git a/arch/x86/kernel/tlb_uv.c b/arch/x86/kernel/tlb_uv.c deleted file mode 100644 index 8b8c0d6640f..00000000000 --- a/arch/x86/kernel/tlb_uv.c +++ /dev/null @@ -1,793 +0,0 @@ -/* - * SGI UltraViolet TLB flush routines. - * - * (c) 2008 Cliff Wickman <cpw@sgi.com>, SGI. - * - * This code is released under the GNU General Public License version 2 or - * later. - */ -#include <linux/mc146818rtc.h> -#include <linux/proc_fs.h> -#include <linux/kernel.h> - -#include <asm/mmu_context.h> -#include <asm/uv/uv_mmrs.h> -#include <asm/uv/uv_hub.h> -#include <asm/uv/uv_bau.h> -#include <asm/genapic.h> -#include <asm/idle.h> -#include <asm/tsc.h> -#include <asm/irq_vectors.h> - -#include <mach_apic.h> - -static struct bau_control **uv_bau_table_bases __read_mostly; -static int uv_bau_retry_limit __read_mostly; - -/* position of pnode (which is nasid>>1): */ -static int uv_nshift __read_mostly; - -static unsigned long uv_mmask __read_mostly; - -static DEFINE_PER_CPU(struct ptc_stats, ptcstats); -static DEFINE_PER_CPU(struct bau_control, bau_control); - -/* - * Free a software acknowledge hardware resource by clearing its Pending - * bit. This will return a reply to the sender. - * If the message has timed out, a reply has already been sent by the - * hardware but the resource has not been released. In that case our - * clear of the Timeout bit (as well) will free the resource. No reply will - * be sent (the hardware will only do one reply per message). - */ -static void uv_reply_to_message(int resource, - struct bau_payload_queue_entry *msg, - struct bau_msg_status *msp) -{ - unsigned long dw; - - dw = (1 << (resource + UV_SW_ACK_NPENDING)) | (1 << resource); - msg->replied_to = 1; - msg->sw_ack_vector = 0; - if (msp) - msp->seen_by.bits = 0; - uv_write_local_mmr(UVH_LB_BAU_INTD_SOFTWARE_ACKNOWLEDGE_ALIAS, dw); -} - -/* - * Do all the things a cpu should do for a TLB shootdown message. - * Other cpu's may come here at the same time for this message. - */ -static void uv_bau_process_message(struct bau_payload_queue_entry *msg, - int msg_slot, int sw_ack_slot) -{ - unsigned long this_cpu_mask; - struct bau_msg_status *msp; - int cpu; - - msp = __get_cpu_var(bau_control).msg_statuses + msg_slot; - cpu = uv_blade_processor_id(); - msg->number_of_cpus = - uv_blade_nr_online_cpus(uv_node_to_blade_id(numa_node_id())); - this_cpu_mask = 1UL << cpu; - if (msp->seen_by.bits & this_cpu_mask) - return; - atomic_or_long(&msp->seen_by.bits, this_cpu_mask); - - if (msg->replied_to == 1) - return; - - if (msg->address == TLB_FLUSH_ALL) { - local_flush_tlb(); - __get_cpu_var(ptcstats).alltlb++; - } else { - __flush_tlb_one(msg->address); - __get_cpu_var(ptcstats).onetlb++; - } - - __get_cpu_var(ptcstats).requestee++; - - atomic_inc_short(&msg->acknowledge_count); - if (msg->number_of_cpus == msg->acknowledge_count) - uv_reply_to_message(sw_ack_slot, msg, msp); -} - -/* - * Examine the payload queue on one distribution node to see - * which messages have not been seen, and which cpu(s) have not seen them. - * - * Returns the number of cpu's that have not responded. - */ -static int uv_examine_destination(struct bau_control *bau_tablesp, int sender) -{ - struct bau_payload_queue_entry *msg; - struct bau_msg_status *msp; - int count = 0; - int i; - int j; - - for (msg = bau_tablesp->va_queue_first, i = 0; i < DEST_Q_SIZE; - msg++, i++) { - if ((msg->sending_cpu == sender) && (!msg->replied_to)) { - msp = bau_tablesp->msg_statuses + i; - printk(KERN_DEBUG - "blade %d: address:%#lx %d of %d, not cpu(s): ", - i, msg->address, msg->acknowledge_count, - msg->number_of_cpus); - for (j = 0; j < msg->number_of_cpus; j++) { - if (!((1L << j) & msp->seen_by.bits)) { - count++; - printk("%d ", j); - } - } - printk("\n"); - } - } - return count; -} - -/* - * Examine the payload queue on all the distribution nodes to see - * which messages have not been seen, and which cpu(s) have not seen them. - * - * Returns the number of cpu's that have not responded. - */ -static int uv_examine_destinations(struct bau_target_nodemask *distribution) -{ - int sender; - int i; - int count = 0; - - sender = smp_processor_id(); - for (i = 0; i < sizeof(struct bau_target_nodemask) * BITSPERBYTE; i++) { - if (!bau_node_isset(i, distribution)) - continue; - count += uv_examine_destination(uv_bau_table_bases[i], sender); - } - return count; -} - -/* - * wait for completion of a broadcast message - * - * return COMPLETE, RETRY or GIVEUP - */ -static int uv_wait_completion(struct bau_desc *bau_desc, - unsigned long mmr_offset, int right_shift) -{ - int exams = 0; - long destination_timeouts = 0; - long source_timeouts = 0; - unsigned long descriptor_status; - - while ((descriptor_status = (((unsigned long) - uv_read_local_mmr(mmr_offset) >> - right_shift) & UV_ACT_STATUS_MASK)) != - DESC_STATUS_IDLE) { - if (descriptor_status == DESC_STATUS_SOURCE_TIMEOUT) { - source_timeouts++; - if (source_timeouts > SOURCE_TIMEOUT_LIMIT) - source_timeouts = 0; - __get_cpu_var(ptcstats).s_retry++; - return FLUSH_RETRY; - } - /* - * spin here looking for progress at the destinations - */ - if (descriptor_status == DESC_STATUS_DESTINATION_TIMEOUT) { - destination_timeouts++; - if (destination_timeouts > DESTINATION_TIMEOUT_LIMIT) { - /* - * returns number of cpus not responding - */ - if (uv_examine_destinations - (&bau_desc->distribution) == 0) { - __get_cpu_var(ptcstats).d_retry++; - return FLUSH_RETRY; - } - exams++; - if (exams >= uv_bau_retry_limit) { - printk(KERN_DEBUG - "uv_flush_tlb_others"); - printk("giving up on cpu %d\n", - smp_processor_id()); - return FLUSH_GIVEUP; - } - /* - * delays can hang the simulator - udelay(1000); - */ - destination_timeouts = 0; - } - } - } - return FLUSH_COMPLETE; -} - -/** - * uv_flush_send_and_wait - * - * Send a broadcast and wait for a broadcast message to complete. - * - * The cpumaskp mask contains the cpus the broadcast was sent to. - * - * Returns 1 if all remote flushing was done. The mask is zeroed. - * Returns 0 if some remote flushing remains to be done. The mask is left - * unchanged. - */ -int uv_flush_send_and_wait(int cpu, int this_blade, struct bau_desc *bau_desc, - cpumask_t *cpumaskp) -{ - int completion_status = 0; - int right_shift; - int tries = 0; - int blade; - int bit; - unsigned long mmr_offset; - unsigned long index; - cycles_t time1; - cycles_t time2; - - if (cpu < UV_CPUS_PER_ACT_STATUS) { - mmr_offset = UVH_LB_BAU_SB_ACTIVATION_STATUS_0; - right_shift = cpu * UV_ACT_STATUS_SIZE; - } else { - mmr_offset = UVH_LB_BAU_SB_ACTIVATION_STATUS_1; - right_shift = - ((cpu - UV_CPUS_PER_ACT_STATUS) * UV_ACT_STATUS_SIZE); - } - time1 = get_cycles(); - do { - tries++; - index = (1UL << UVH_LB_BAU_SB_ACTIVATION_CONTROL_PUSH_SHFT) | - cpu; - uv_write_local_mmr(UVH_LB_BAU_SB_ACTIVATION_CONTROL, index); - completion_status = uv_wait_completion(bau_desc, mmr_offset, - right_shift); - } while (completion_status == FLUSH_RETRY); - time2 = get_cycles(); - __get_cpu_var(ptcstats).sflush += (time2 - time1); - if (tries > 1) - __get_cpu_var(ptcstats).retriesok++; - - if (completion_status == FLUSH_GIVEUP) { - /* - * Cause the caller to do an IPI-style TLB shootdown on - * the cpu's, all of which are still in the mask. - */ - __get_cpu_var(ptcstats).ptc_i++; - return 0; - } - - /* - * Success, so clear the remote cpu's from the mask so we don't - * use the IPI method of shootdown on them. - */ - for_each_cpu_mask(bit, *cpumaskp) { - blade = uv_cpu_to_blade_id(bit); - if (blade == this_blade) - continue; - cpu_clear(bit, *cpumaskp); - } - if (!cpus_empty(*cpumaskp)) - return 0; - return 1; -} - -/** - * uv_flush_tlb_others - globally purge translation cache of a virtual - * address or all TLB's - * @cpumaskp: mask of all cpu's in which the address is to be removed - * @mm: mm_struct containing virtual address range - * @va: virtual address to be removed (or TLB_FLUSH_ALL for all TLB's on cpu) - * - * This is the entry point for initiating any UV global TLB shootdown. - * - * Purges the translation caches of all specified processors of the given - * virtual address, or purges all TLB's on specified processors. - * - * The caller has derived the cpumaskp from the mm_struct and has subtracted - * the local cpu from the mask. This function is called only if there - * are bits set in the mask. (e.g. flush_tlb_page()) - * - * The cpumaskp is converted into a nodemask of the nodes containing - * the cpus. - * - * Returns 1 if all remote flushing was done. - * Returns 0 if some remote flushing remains to be done. - */ -int uv_flush_tlb_others(cpumask_t *cpumaskp, struct mm_struct *mm, - unsigned long va) -{ - int i; - int bit; - int blade; - int cpu; - int this_blade; - int locals = 0; - struct bau_desc *bau_desc; - - cpu = uv_blade_processor_id(); - this_blade = uv_numa_blade_id(); - bau_desc = __get_cpu_var(bau_control).descriptor_base; - bau_desc += UV_ITEMS_PER_DESCRIPTOR * cpu; - - bau_nodes_clear(&bau_desc->distribution, UV_DISTRIBUTION_SIZE); - - i = 0; - for_each_cpu_mask(bit, *cpumaskp) { - blade = uv_cpu_to_blade_id(bit); - BUG_ON(blade > (UV_DISTRIBUTION_SIZE - 1)); - if (blade == this_blade) { - locals++; - continue; - } - bau_node_set(blade, &bau_desc->distribution); - i++; - } - if (i == 0) { - /* - * no off_node flushing; return status for local node - */ - if (locals) - return 0; - else - return 1; - } - __get_cpu_var(ptcstats).requestor++; - __get_cpu_var(ptcstats).ntargeted += i; - - bau_desc->payload.address = va; - bau_desc->payload.sending_cpu = smp_processor_id(); - - return uv_flush_send_and_wait(cpu, this_blade, bau_desc, cpumaskp); -} - -/* - * The BAU message interrupt comes here. (registered by set_intr_gate) - * See entry_64.S - * - * We received a broadcast assist message. - * - * Interrupts may have been disabled; this interrupt could represent - * the receipt of several messages. - * - * All cores/threads on this node get this interrupt. - * The last one to see it does the s/w ack. - * (the resource will not be freed until noninterruptable cpus see this - * interrupt; hardware will timeout the s/w ack and reply ERROR) - */ -void uv_bau_message_interrupt(struct pt_regs *regs) -{ - struct bau_payload_queue_entry *va_queue_first; - struct bau_payload_queue_entry *va_queue_last; - struct bau_payload_queue_entry *msg; - struct pt_regs *old_regs = set_irq_regs(regs); - cycles_t time1; - cycles_t time2; - int msg_slot; - int sw_ack_slot; - int fw; - int count = 0; - unsigned long local_pnode; - - ack_APIC_irq(); - exit_idle(); - irq_enter(); - - time1 = get_cycles(); - - local_pnode = uv_blade_to_pnode(uv_numa_blade_id()); - - va_queue_first = __get_cpu_var(bau_control).va_queue_first; - va_queue_last = __get_cpu_var(bau_control).va_queue_last; - - msg = __get_cpu_var(bau_control).bau_msg_head; - while (msg->sw_ack_vector) { - count++; - fw = msg->sw_ack_vector; - msg_slot = msg - va_queue_first; - sw_ack_slot = ffs(fw) - 1; - - uv_bau_process_message(msg, msg_slot, sw_ack_slot); - - msg++; - if (msg > va_queue_last) - msg = va_queue_first; - __get_cpu_var(bau_control).bau_msg_head = msg; - } - if (!count) - __get_cpu_var(ptcstats).nomsg++; - else if (count > 1) - __get_cpu_var(ptcstats).multmsg++; - - time2 = get_cycles(); - __get_cpu_var(ptcstats).dflush += (time2 - time1); - - irq_exit(); - set_irq_regs(old_regs); -} - -static void uv_enable_timeouts(void) -{ - int i; - int blade; - int last_blade; - int pnode; - int cur_cpu = 0; - unsigned long apicid; - - last_blade = -1; - for_each_online_node(i) { - blade = uv_node_to_blade_id(i); - if (blade == last_blade) - continue; - last_blade = blade; - apicid = per_cpu(x86_cpu_to_apicid, cur_cpu); - pnode = uv_blade_to_pnode(blade); - cur_cpu += uv_blade_nr_possible_cpus(i); - } -} - -static void *uv_ptc_seq_start(struct seq_file *file, loff_t *offset) -{ - if (*offset < num_possible_cpus()) - return offset; - return NULL; -} - -static void *uv_ptc_seq_next(struct seq_file *file, void *data, loff_t *offset) -{ - (*offset)++; - if (*offset < num_possible_cpus()) - return offset; - return NULL; -} - -static void uv_ptc_seq_stop(struct seq_file *file, void *data) -{ -} - -/* - * Display the statistics thru /proc - * data points to the cpu number - */ -static int uv_ptc_seq_show(struct seq_file *file, void *data) -{ - struct ptc_stats *stat; - int cpu; - - cpu = *(loff_t *)data; - - if (!cpu) { - seq_printf(file, - "# cpu requestor requestee one all sretry dretry ptc_i "); - seq_printf(file, - "sw_ack sflush dflush sok dnomsg dmult starget\n"); - } - if (cpu < num_possible_cpus() && cpu_online(cpu)) { - stat = &per_cpu(ptcstats, cpu); - seq_printf(file, "cpu %d %ld %ld %ld %ld %ld %ld %ld ", - cpu, stat->requestor, - stat->requestee, stat->onetlb, stat->alltlb, - stat->s_retry, stat->d_retry, stat->ptc_i); - seq_printf(file, "%lx %ld %ld %ld %ld %ld %ld\n", - uv_read_global_mmr64(uv_blade_to_pnode - (uv_cpu_to_blade_id(cpu)), - UVH_LB_BAU_INTD_SOFTWARE_ACKNOWLEDGE), - stat->sflush, stat->dflush, - stat->retriesok, stat->nomsg, - stat->multmsg, stat->ntargeted); - } - - return 0; -} - -/* - * 0: display meaning of the statistics - * >0: retry limit - */ -static ssize_t uv_ptc_proc_write(struct file *file, const char __user *user, - size_t count, loff_t *data) -{ - long newmode; - char optstr[64]; - - if (count == 0 || count > sizeof(optstr)) - return -EINVAL; - if (copy_from_user(optstr, user, count)) - return -EFAULT; - optstr[count - 1] = '\0'; - if (strict_strtoul(optstr, 10, &newmode) < 0) { - printk(KERN_DEBUG "%s is invalid\n", optstr); - return -EINVAL; - } - - if (newmode == 0) { - printk(KERN_DEBUG "# cpu: cpu number\n"); - printk(KERN_DEBUG - "requestor: times this cpu was the flush requestor\n"); - printk(KERN_DEBUG - "requestee: times this cpu was requested to flush its TLBs\n"); - printk(KERN_DEBUG - "one: times requested to flush a single address\n"); - printk(KERN_DEBUG - "all: times requested to flush all TLB's\n"); - printk(KERN_DEBUG - "sretry: number of retries of source-side timeouts\n"); - printk(KERN_DEBUG - "dretry: number of retries of destination-side timeouts\n"); - printk(KERN_DEBUG - "ptc_i: times UV fell through to IPI-style flushes\n"); - printk(KERN_DEBUG - "sw_ack: image of UVH_LB_BAU_INTD_SOFTWARE_ACKNOWLEDGE\n"); - printk(KERN_DEBUG - "sflush_us: cycles spent in uv_flush_tlb_others()\n"); - printk(KERN_DEBUG - "dflush_us: cycles spent in handling flush requests\n"); - printk(KERN_DEBUG "sok: successes on retry\n"); - printk(KERN_DEBUG "dnomsg: interrupts with no message\n"); - printk(KERN_DEBUG - "dmult: interrupts with multiple messages\n"); - printk(KERN_DEBUG "starget: nodes targeted\n"); - } else { - uv_bau_retry_limit = newmode; - printk(KERN_DEBUG "timeout retry limit:%d\n", - uv_bau_retry_limit); - } - - return count; -} - -static const struct seq_operations uv_ptc_seq_ops = { - .start = uv_ptc_seq_start, - .next = uv_ptc_seq_next, - .stop = uv_ptc_seq_stop, - .show = uv_ptc_seq_show -}; - -static int uv_ptc_proc_open(struct inode *inode, struct file *file) -{ - return seq_open(file, &uv_ptc_seq_ops); -} - -static const struct file_operations proc_uv_ptc_operations = { - .open = uv_ptc_proc_open, - .read = seq_read, - .write = uv_ptc_proc_write, - .llseek = seq_lseek, - .release = seq_release, -}; - -static int __init uv_ptc_init(void) -{ - struct proc_dir_entry *proc_uv_ptc; - - if (!is_uv_system()) - return 0; - - if (!proc_mkdir("sgi_uv", NULL)) - return -EINVAL; - - proc_uv_ptc = create_proc_entry(UV_PTC_BASENAME, 0444, NULL); - if (!proc_uv_ptc) { - printk(KERN_ERR "unable to create %s proc entry\n", - UV_PTC_BASENAME); - remove_proc_entry("sgi_uv", NULL); - return -EINVAL; - } - proc_uv_ptc->proc_fops = &proc_uv_ptc_operations; - return 0; -} - -/* - * begin the initialization of the per-blade control structures - */ -static struct bau_control * __init uv_table_bases_init(int blade, int node) -{ - int i; - int *ip; - struct bau_msg_status *msp; - struct bau_control *bau_tabp; - - bau_tabp = - kmalloc_node(sizeof(struct bau_control), GFP_KERNEL, node); - BUG_ON(!bau_tabp); - - bau_tabp->msg_statuses = - kmalloc_node(sizeof(struct bau_msg_status) * - DEST_Q_SIZE, GFP_KERNEL, node); - BUG_ON(!bau_tabp->msg_statuses); - - for (i = 0, msp = bau_tabp->msg_statuses; i < DEST_Q_SIZE; i++, msp++) - bau_cpubits_clear(&msp->seen_by, (int) - uv_blade_nr_possible_cpus(blade)); - - bau_tabp->watching = - kmalloc_node(sizeof(int) * DEST_NUM_RESOURCES, GFP_KERNEL, node); - BUG_ON(!bau_tabp->watching); - - for (i = 0, ip = bau_tabp->watching; i < DEST_Q_SIZE; i++, ip++) - *ip = 0; - - uv_bau_table_bases[blade] = bau_tabp; - - return bau_tabp; -} - -/* - * finish the initialization of the per-blade control structures - */ -static void __init -uv_table_bases_finish(int blade, int node, int cur_cpu, - struct bau_control *bau_tablesp, - struct bau_desc *adp) -{ - struct bau_control *bcp; - int i; - - for (i = cur_cpu; i < cur_cpu + uv_blade_nr_possible_cpus(blade); i++) { - bcp = (struct bau_control *)&per_cpu(bau_control, i); - - bcp->bau_msg_head = bau_tablesp->va_queue_first; - bcp->va_queue_first = bau_tablesp->va_queue_first; - bcp->va_queue_last = bau_tablesp->va_queue_last; - bcp->watching = bau_tablesp->watching; - bcp->msg_statuses = bau_tablesp->msg_statuses; - bcp->descriptor_base = adp; - } -} - -/* - * initialize the sending side's sending buffers - */ -static struct bau_desc * __init -uv_activation_descriptor_init(int node, int pnode) -{ - int i; - unsigned long pa; - unsigned long m; - unsigned long n; - unsigned long mmr_image; - struct bau_desc *adp; - struct bau_desc *ad2; - - adp = (struct bau_desc *) - kmalloc_node(16384, GFP_KERNEL, node); - BUG_ON(!adp); - - pa = __pa((unsigned long)adp); - n = pa >> uv_nshift; - m = pa & uv_mmask; - - mmr_image = uv_read_global_mmr64(pnode, UVH_LB_BAU_SB_DESCRIPTOR_BASE); - if (mmr_image) { - uv_write_global_mmr64(pnode, (unsigned long) - UVH_LB_BAU_SB_DESCRIPTOR_BASE, - (n << UV_DESC_BASE_PNODE_SHIFT | m)); - } - - for (i = 0, ad2 = adp; i < UV_ACTIVATION_DESCRIPTOR_SIZE; i++, ad2++) { - memset(ad2, 0, sizeof(struct bau_desc)); - ad2->header.sw_ack_flag = 1; - ad2->header.base_dest_nodeid = - uv_blade_to_pnode(uv_cpu_to_blade_id(0)); - ad2->header.command = UV_NET_ENDPOINT_INTD; - ad2->header.int_both = 1; - /* - * all others need to be set to zero: - * fairness chaining multilevel count replied_to - */ - } - return adp; -} - -/* - * initialize the destination side's receiving buffers - */ -static struct bau_payload_queue_entry * __init -uv_payload_queue_init(int node, int pnode, struct bau_control *bau_tablesp) -{ - struct bau_payload_queue_entry *pqp; - char *cp; - - pqp = (struct bau_payload_queue_entry *) kmalloc_node( - (DEST_Q_SIZE + 1) * sizeof(struct bau_payload_queue_entry), - GFP_KERNEL, node); - BUG_ON(!pqp); - - cp = (char *)pqp + 31; - pqp = (struct bau_payload_queue_entry *)(((unsigned long)cp >> 5) << 5); - bau_tablesp->va_queue_first = pqp; - uv_write_global_mmr64(pnode, - UVH_LB_BAU_INTD_PAYLOAD_QUEUE_FIRST, - ((unsigned long)pnode << - UV_PAYLOADQ_PNODE_SHIFT) | - uv_physnodeaddr(pqp)); - uv_write_global_mmr64(pnode, UVH_LB_BAU_INTD_PAYLOAD_QUEUE_TAIL, - uv_physnodeaddr(pqp)); - bau_tablesp->va_queue_last = pqp + (DEST_Q_SIZE - 1); - uv_write_global_mmr64(pnode, UVH_LB_BAU_INTD_PAYLOAD_QUEUE_LAST, - (unsigned long) - uv_physnodeaddr(bau_tablesp->va_queue_last)); - memset(pqp, 0, sizeof(struct bau_payload_queue_entry) * DEST_Q_SIZE); - - return pqp; -} - -/* - * Initialization of each UV blade's structures - */ -static int __init uv_init_blade(int blade, int node, int cur_cpu) -{ - int pnode; - unsigned long pa; - unsigned long apicid; - struct bau_desc *adp; - struct bau_payload_queue_entry *pqp; - struct bau_control *bau_tablesp; - - bau_tablesp = uv_table_bases_init(blade, node); - pnode = uv_blade_to_pnode(blade); - adp = uv_activation_descriptor_init(node, pnode); - pqp = uv_payload_queue_init(node, pnode, bau_tablesp); - uv_table_bases_finish(blade, node, cur_cpu, bau_tablesp, adp); - /* - * the below initialization can't be in firmware because the - * messaging IRQ will be determined by the OS - */ - apicid = per_cpu(x86_cpu_to_apicid, cur_cpu); - pa = uv_read_global_mmr64(pnode, UVH_BAU_DATA_CONFIG); - if ((pa & 0xff) != UV_BAU_MESSAGE) { - uv_write_global_mmr64(pnode, UVH_BAU_DATA_CONFIG, - ((apicid << 32) | UV_BAU_MESSAGE)); - } - return 0; -} - -/* - * Initialization of BAU-related structures - */ -static int __init uv_bau_init(void) -{ - int blade; - int node; - int nblades; - int last_blade; - int cur_cpu = 0; - - if (!is_uv_system()) - return 0; - - uv_bau_retry_limit = 1; - uv_nshift = uv_hub_info->n_val; - uv_mmask = (1UL << uv_hub_info->n_val) - 1; - nblades = 0; - last_blade = -1; - for_each_online_node(node) { - blade = uv_node_to_blade_id(node); - if (blade == last_blade) - continue; - last_blade = blade; - nblades++; - } - uv_bau_table_bases = (struct bau_control **) - kmalloc(nblades * sizeof(struct bau_control *), GFP_KERNEL); - BUG_ON(!uv_bau_table_bases); - - last_blade = -1; - for_each_online_node(node) { - blade = uv_node_to_blade_id(node); - if (blade == last_blade) - continue; - last_blade = blade; - uv_init_blade(blade, node, cur_cpu); - cur_cpu += uv_blade_nr_possible_cpus(blade); - } - alloc_intr_gate(UV_BAU_MESSAGE, uv_bau_message_intr1); - uv_enable_timeouts(); - - return 0; -} -__initcall(uv_bau_init); -__initcall(uv_ptc_init); |