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@@ -1,7 +1,7 @@
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/*
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* SGI UltraViolet TLB flush routines.
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*
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- * (c) 2008 Cliff Wickman <cpw@sgi.com>, SGI.
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+ * (c) 2008-2010 Cliff Wickman <cpw@sgi.com>, SGI.
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*
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* This code is released under the GNU General Public License version 2 or
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* later.
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@@ -20,42 +20,67 @@
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#include <asm/idle.h>
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#include <asm/tsc.h>
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#include <asm/irq_vectors.h>
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+#include <asm/timer.h>
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-static struct bau_control **uv_bau_table_bases __read_mostly;
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-static int uv_bau_retry_limit __read_mostly;
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+struct msg_desc {
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+ struct bau_payload_queue_entry *msg;
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+ int msg_slot;
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+ int sw_ack_slot;
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+ struct bau_payload_queue_entry *va_queue_first;
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+ struct bau_payload_queue_entry *va_queue_last;
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+};
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-/* base pnode in this partition */
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-static int uv_partition_base_pnode __read_mostly;
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+#define UV_INTD_SOFT_ACK_TIMEOUT_PERIOD 0x000000000bUL
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+
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+static int uv_bau_max_concurrent __read_mostly;
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+
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+static int nobau;
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+static int __init setup_nobau(char *arg)
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+{
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+ nobau = 1;
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+ return 0;
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+}
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+early_param("nobau", setup_nobau);
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-static unsigned long uv_mmask __read_mostly;
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+/* base pnode in this partition */
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+static int uv_partition_base_pnode __read_mostly;
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+/* position of pnode (which is nasid>>1): */
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+static int uv_nshift __read_mostly;
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+static unsigned long uv_mmask __read_mostly;
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static DEFINE_PER_CPU(struct ptc_stats, ptcstats);
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static DEFINE_PER_CPU(struct bau_control, bau_control);
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+static DEFINE_PER_CPU(cpumask_var_t, uv_flush_tlb_mask);
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+
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+struct reset_args {
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+ int sender;
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+};
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/*
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- * Determine the first node on a blade.
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+ * Determine the first node on a uvhub. 'Nodes' are used for kernel
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+ * memory allocation.
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*/
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-static int __init blade_to_first_node(int blade)
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+static int __init uvhub_to_first_node(int uvhub)
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{
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int node, b;
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for_each_online_node(node) {
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b = uv_node_to_blade_id(node);
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- if (blade == b)
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+ if (uvhub == b)
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return node;
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}
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- return -1; /* shouldn't happen */
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+ return -1;
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}
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/*
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- * Determine the apicid of the first cpu on a blade.
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+ * Determine the apicid of the first cpu on a uvhub.
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*/
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-static int __init blade_to_first_apicid(int blade)
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+static int __init uvhub_to_first_apicid(int uvhub)
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{
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int cpu;
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for_each_present_cpu(cpu)
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- if (blade == uv_cpu_to_blade_id(cpu))
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+ if (uvhub == uv_cpu_to_blade_id(cpu))
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return per_cpu(x86_cpu_to_apicid, cpu);
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return -1;
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}
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@@ -68,195 +93,459 @@ static int __init blade_to_first_apicid(int blade)
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* clear of the Timeout bit (as well) will free the resource. No reply will
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* be sent (the hardware will only do one reply per message).
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*/
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-static void uv_reply_to_message(int resource,
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- struct bau_payload_queue_entry *msg,
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- struct bau_msg_status *msp)
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+static inline void uv_reply_to_message(struct msg_desc *mdp,
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+ struct bau_control *bcp)
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{
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unsigned long dw;
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+ struct bau_payload_queue_entry *msg;
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- dw = (1 << (resource + UV_SW_ACK_NPENDING)) | (1 << resource);
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+ msg = mdp->msg;
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+ if (!msg->canceled) {
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+ dw = (msg->sw_ack_vector << UV_SW_ACK_NPENDING) |
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+ msg->sw_ack_vector;
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+ uv_write_local_mmr(
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+ UVH_LB_BAU_INTD_SOFTWARE_ACKNOWLEDGE_ALIAS, dw);
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+ }
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msg->replied_to = 1;
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msg->sw_ack_vector = 0;
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- if (msp)
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- msp->seen_by.bits = 0;
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- uv_write_local_mmr(UVH_LB_BAU_INTD_SOFTWARE_ACKNOWLEDGE_ALIAS, dw);
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}
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/*
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- * Do all the things a cpu should do for a TLB shootdown message.
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- * Other cpu's may come here at the same time for this message.
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+ * Process the receipt of a RETRY message
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*/
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-static void uv_bau_process_message(struct bau_payload_queue_entry *msg,
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- int msg_slot, int sw_ack_slot)
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+static inline void uv_bau_process_retry_msg(struct msg_desc *mdp,
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+ struct bau_control *bcp)
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{
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- unsigned long this_cpu_mask;
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- struct bau_msg_status *msp;
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- int cpu;
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+ int i;
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+ int cancel_count = 0;
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+ int slot2;
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+ unsigned long msg_res;
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+ unsigned long mmr = 0;
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+ struct bau_payload_queue_entry *msg;
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+ struct bau_payload_queue_entry *msg2;
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+ struct ptc_stats *stat;
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- msp = __get_cpu_var(bau_control).msg_statuses + msg_slot;
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- cpu = uv_blade_processor_id();
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- msg->number_of_cpus =
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- uv_blade_nr_online_cpus(uv_node_to_blade_id(numa_node_id()));
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- this_cpu_mask = 1UL << cpu;
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- if (msp->seen_by.bits & this_cpu_mask)
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- return;
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- atomic_or_long(&msp->seen_by.bits, this_cpu_mask);
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+ msg = mdp->msg;
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+ stat = &per_cpu(ptcstats, bcp->cpu);
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+ stat->d_retries++;
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+ /*
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+ * cancel any message from msg+1 to the retry itself
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+ */
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+ for (msg2 = msg+1, i = 0; i < DEST_Q_SIZE; msg2++, i++) {
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+ if (msg2 > mdp->va_queue_last)
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+ msg2 = mdp->va_queue_first;
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+ if (msg2 == msg)
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+ break;
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+
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+ /* same conditions for cancellation as uv_do_reset */
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+ if ((msg2->replied_to == 0) && (msg2->canceled == 0) &&
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+ (msg2->sw_ack_vector) && ((msg2->sw_ack_vector &
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+ msg->sw_ack_vector) == 0) &&
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+ (msg2->sending_cpu == msg->sending_cpu) &&
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+ (msg2->msg_type != MSG_NOOP)) {
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+ slot2 = msg2 - mdp->va_queue_first;
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+ mmr = uv_read_local_mmr
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+ (UVH_LB_BAU_INTD_SOFTWARE_ACKNOWLEDGE);
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+ msg_res = ((msg2->sw_ack_vector << 8) |
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+ msg2->sw_ack_vector);
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+ /*
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+ * This is a message retry; clear the resources held
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+ * by the previous message only if they timed out.
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+ * If it has not timed out we have an unexpected
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+ * situation to report.
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+ */
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+ if (mmr & (msg_res << 8)) {
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+ /*
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+ * is the resource timed out?
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+ * make everyone ignore the cancelled message.
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+ */
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+ msg2->canceled = 1;
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+ stat->d_canceled++;
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+ cancel_count++;
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+ uv_write_local_mmr(
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+ UVH_LB_BAU_INTD_SOFTWARE_ACKNOWLEDGE_ALIAS,
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+ (msg_res << 8) | msg_res);
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+ } else
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+ printk(KERN_INFO "note bau retry: no effect\n");
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+ }
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+ }
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+ if (!cancel_count)
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+ stat->d_nocanceled++;
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+}
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- if (msg->replied_to == 1)
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- return;
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+/*
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+ * Do all the things a cpu should do for a TLB shootdown message.
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+ * Other cpu's may come here at the same time for this message.
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+ */
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+static void uv_bau_process_message(struct msg_desc *mdp,
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+ struct bau_control *bcp)
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+{
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+ int msg_ack_count;
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+ short socket_ack_count = 0;
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+ struct ptc_stats *stat;
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+ struct bau_payload_queue_entry *msg;
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+ struct bau_control *smaster = bcp->socket_master;
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+ /*
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+ * This must be a normal message, or retry of a normal message
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+ */
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+ msg = mdp->msg;
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+ stat = &per_cpu(ptcstats, bcp->cpu);
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if (msg->address == TLB_FLUSH_ALL) {
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local_flush_tlb();
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- __get_cpu_var(ptcstats).alltlb++;
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+ stat->d_alltlb++;
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} else {
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__flush_tlb_one(msg->address);
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- __get_cpu_var(ptcstats).onetlb++;
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+ stat->d_onetlb++;
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}
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+ stat->d_requestee++;
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+
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+ /*
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+ * One cpu on each uvhub has the additional job on a RETRY
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+ * of releasing the resource held by the message that is
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+ * being retried. That message is identified by sending
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+ * cpu number.
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+ */
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+ if (msg->msg_type == MSG_RETRY && bcp == bcp->uvhub_master)
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+ uv_bau_process_retry_msg(mdp, bcp);
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- __get_cpu_var(ptcstats).requestee++;
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+ /*
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+ * This is a sw_ack message, so we have to reply to it.
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+ * Count each responding cpu on the socket. This avoids
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+ * pinging the count's cache line back and forth between
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+ * the sockets.
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+ */
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+ socket_ack_count = atomic_add_short_return(1, (struct atomic_short *)
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+ &smaster->socket_acknowledge_count[mdp->msg_slot]);
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+ if (socket_ack_count == bcp->cpus_in_socket) {
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+ /*
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+ * Both sockets dump their completed count total into
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+ * the message's count.
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+ */
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+ smaster->socket_acknowledge_count[mdp->msg_slot] = 0;
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+ msg_ack_count = atomic_add_short_return(socket_ack_count,
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+ (struct atomic_short *)&msg->acknowledge_count);
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+
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+ if (msg_ack_count == bcp->cpus_in_uvhub) {
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+ /*
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+ * All cpus in uvhub saw it; reply
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+ */
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+ uv_reply_to_message(mdp, bcp);
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+ }
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+ }
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- atomic_inc_short(&msg->acknowledge_count);
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- if (msg->number_of_cpus == msg->acknowledge_count)
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- uv_reply_to_message(sw_ack_slot, msg, msp);
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+ return;
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}
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/*
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- * Examine the payload queue on one distribution node to see
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- * which messages have not been seen, and which cpu(s) have not seen them.
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+ * Determine the first cpu on a uvhub.
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+ */
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+static int uvhub_to_first_cpu(int uvhub)
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+{
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+ int cpu;
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+ for_each_present_cpu(cpu)
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+ if (uvhub == uv_cpu_to_blade_id(cpu))
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+ return cpu;
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+ return -1;
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+}
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+
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+/*
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+ * Last resort when we get a large number of destination timeouts is
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+ * to clear resources held by a given cpu.
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+ * Do this with IPI so that all messages in the BAU message queue
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+ * can be identified by their nonzero sw_ack_vector field.
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*
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- * Returns the number of cpu's that have not responded.
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+ * This is entered for a single cpu on the uvhub.
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+ * The sender want's this uvhub to free a specific message's
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+ * sw_ack resources.
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*/
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-static int uv_examine_destination(struct bau_control *bau_tablesp, int sender)
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+static void
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+uv_do_reset(void *ptr)
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{
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- struct bau_payload_queue_entry *msg;
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- struct bau_msg_status *msp;
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- int count = 0;
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int i;
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- int j;
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+ int slot;
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+ int count = 0;
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+ unsigned long mmr;
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+ unsigned long msg_res;
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+ struct bau_control *bcp;
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+ struct reset_args *rap;
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+ struct bau_payload_queue_entry *msg;
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+ struct ptc_stats *stat;
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- for (msg = bau_tablesp->va_queue_first, i = 0; i < DEST_Q_SIZE;
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- msg++, i++) {
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- if ((msg->sending_cpu == sender) && (!msg->replied_to)) {
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- msp = bau_tablesp->msg_statuses + i;
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- printk(KERN_DEBUG
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- "blade %d: address:%#lx %d of %d, not cpu(s): ",
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- i, msg->address, msg->acknowledge_count,
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- msg->number_of_cpus);
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- for (j = 0; j < msg->number_of_cpus; j++) {
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- if (!((1L << j) & msp->seen_by.bits)) {
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- count++;
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- printk("%d ", j);
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- }
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+ bcp = &per_cpu(bau_control, smp_processor_id());
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+ rap = (struct reset_args *)ptr;
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+ stat = &per_cpu(ptcstats, bcp->cpu);
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+ stat->d_resets++;
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+
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+ /*
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+ * We're looking for the given sender, and
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+ * will free its sw_ack resource.
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+ * If all cpu's finally responded after the timeout, its
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+ * message 'replied_to' was set.
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+ */
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+ for (msg = bcp->va_queue_first, i = 0; i < DEST_Q_SIZE; msg++, i++) {
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+ /* uv_do_reset: same conditions for cancellation as
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+ uv_bau_process_retry_msg() */
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+ if ((msg->replied_to == 0) &&
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+ (msg->canceled == 0) &&
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+ (msg->sending_cpu == rap->sender) &&
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+ (msg->sw_ack_vector) &&
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+ (msg->msg_type != MSG_NOOP)) {
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+ /*
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+ * make everyone else ignore this message
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+ */
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+ msg->canceled = 1;
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+ slot = msg - bcp->va_queue_first;
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+ count++;
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+ /*
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+ * only reset the resource if it is still pending
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+ */
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+ mmr = uv_read_local_mmr
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+ (UVH_LB_BAU_INTD_SOFTWARE_ACKNOWLEDGE);
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+ msg_res = ((msg->sw_ack_vector << 8) |
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+ msg->sw_ack_vector);
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+ if (mmr & msg_res) {
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+ stat->d_rcanceled++;
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+ uv_write_local_mmr(
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+ UVH_LB_BAU_INTD_SOFTWARE_ACKNOWLEDGE_ALIAS,
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+ msg_res);
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}
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- printk("\n");
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}
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}
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- return count;
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+ return;
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}
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/*
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- * Examine the payload queue on all the distribution nodes to see
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- * which messages have not been seen, and which cpu(s) have not seen them.
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- *
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- * Returns the number of cpu's that have not responded.
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+ * Use IPI to get all target uvhubs to release resources held by
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+ * a given sending cpu number.
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*/
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-static int uv_examine_destinations(struct bau_target_nodemask *distribution)
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+static void uv_reset_with_ipi(struct bau_target_uvhubmask *distribution,
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+ int sender)
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{
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- int sender;
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- int i;
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- int count = 0;
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+ int uvhub;
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+ int cpu;
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+ cpumask_t mask;
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+ struct reset_args reset_args;
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+
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+ reset_args.sender = sender;
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- sender = smp_processor_id();
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- for (i = 0; i < sizeof(struct bau_target_nodemask) * BITSPERBYTE; i++) {
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- if (!bau_node_isset(i, distribution))
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+ cpus_clear(mask);
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|
+ /* find a single cpu for each uvhub in this distribution mask */
|
|
|
+ for (uvhub = 0;
|
|
|
+ uvhub < sizeof(struct bau_target_uvhubmask) * BITSPERBYTE;
|
|
|
+ uvhub++) {
|
|
|
+ if (!bau_uvhub_isset(uvhub, distribution))
|
|
|
continue;
|
|
|
- count += uv_examine_destination(uv_bau_table_bases[i], sender);
|
|
|
+ /* find a cpu for this uvhub */
|
|
|
+ cpu = uvhub_to_first_cpu(uvhub);
|
|
|
+ cpu_set(cpu, mask);
|
|
|
}
|
|
|
- return count;
|
|
|
+ /* IPI all cpus; Preemption is already disabled */
|
|
|
+ smp_call_function_many(&mask, uv_do_reset, (void *)&reset_args, 1);
|
|
|
+ return;
|
|
|
+}
|
|
|
+
|
|
|
+static inline unsigned long
|
|
|
+cycles_2_us(unsigned long long cyc)
|
|
|
+{
|
|
|
+ unsigned long long ns;
|
|
|
+ unsigned long us;
|
|
|
+ ns = (cyc * per_cpu(cyc2ns, smp_processor_id()))
|
|
|
+ >> CYC2NS_SCALE_FACTOR;
|
|
|
+ us = ns / 1000;
|
|
|
+ return us;
|
|
|
}
|
|
|
|
|
|
/*
|
|
|
- * wait for completion of a broadcast message
|
|
|
- *
|
|
|
- * return COMPLETE, RETRY or GIVEUP
|
|
|
+ * wait for all cpus on this hub to finish their sends and go quiet
|
|
|
+ * leaves uvhub_quiesce set so that no new broadcasts are started by
|
|
|
+ * bau_flush_send_and_wait()
|
|
|
+ */
|
|
|
+static inline void
|
|
|
+quiesce_local_uvhub(struct bau_control *hmaster)
|
|
|
+{
|
|
|
+ atomic_add_short_return(1, (struct atomic_short *)
|
|
|
+ &hmaster->uvhub_quiesce);
|
|
|
+}
|
|
|
+
|
|
|
+/*
|
|
|
+ * mark this quiet-requestor as done
|
|
|
+ */
|
|
|
+static inline void
|
|
|
+end_uvhub_quiesce(struct bau_control *hmaster)
|
|
|
+{
|
|
|
+ atomic_add_short_return(-1, (struct atomic_short *)
|
|
|
+ &hmaster->uvhub_quiesce);
|
|
|
+}
|
|
|
+
|
|
|
+/*
|
|
|
+ * Wait for completion of a broadcast software ack message
|
|
|
+ * return COMPLETE, RETRY(PLUGGED or TIMEOUT) or GIVEUP
|
|
|
*/
|
|
|
static int uv_wait_completion(struct bau_desc *bau_desc,
|
|
|
- unsigned long mmr_offset, int right_shift)
|
|
|
+ unsigned long mmr_offset, int right_shift, int this_cpu,
|
|
|
+ struct bau_control *bcp, struct bau_control *smaster, long try)
|
|
|
{
|
|
|
- int exams = 0;
|
|
|
- long destination_timeouts = 0;
|
|
|
- long source_timeouts = 0;
|
|
|
+ int relaxes = 0;
|
|
|
unsigned long descriptor_status;
|
|
|
+ unsigned long mmr;
|
|
|
+ unsigned long mask;
|
|
|
+ cycles_t ttime;
|
|
|
+ cycles_t timeout_time;
|
|
|
+ struct ptc_stats *stat = &per_cpu(ptcstats, this_cpu);
|
|
|
+ struct bau_control *hmaster;
|
|
|
+
|
|
|
+ hmaster = bcp->uvhub_master;
|
|
|
+ timeout_time = get_cycles() + bcp->timeout_interval;
|
|
|
|
|
|
+ /* spin on the status MMR, waiting for it to go idle */
|
|
|
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
|
|
|
+ * Our software ack messages may be blocked because there are
|
|
|
+ * no swack resources available. As long as none of them
|
|
|
+ * has timed out hardware will NACK our message and its
|
|
|
+ * state will stay IDLE.
|
|
|
*/
|
|
|
- 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());
|
|
|
+ if (descriptor_status == DESC_STATUS_SOURCE_TIMEOUT) {
|
|
|
+ stat->s_stimeout++;
|
|
|
+ return FLUSH_GIVEUP;
|
|
|
+ } else if (descriptor_status ==
|
|
|
+ DESC_STATUS_DESTINATION_TIMEOUT) {
|
|
|
+ stat->s_dtimeout++;
|
|
|
+ ttime = get_cycles();
|
|
|
+
|
|
|
+ /*
|
|
|
+ * Our retries may be blocked by all destination
|
|
|
+ * swack resources being consumed, and a timeout
|
|
|
+ * pending. In that case hardware returns the
|
|
|
+ * ERROR that looks like a destination timeout.
|
|
|
+ */
|
|
|
+ if (cycles_2_us(ttime - bcp->send_message) < BIOS_TO) {
|
|
|
+ bcp->conseccompletes = 0;
|
|
|
+ return FLUSH_RETRY_PLUGGED;
|
|
|
+ }
|
|
|
+
|
|
|
+ bcp->conseccompletes = 0;
|
|
|
+ return FLUSH_RETRY_TIMEOUT;
|
|
|
+ } else {
|
|
|
+ /*
|
|
|
+ * descriptor_status is still BUSY
|
|
|
+ */
|
|
|
+ cpu_relax();
|
|
|
+ relaxes++;
|
|
|
+ if (relaxes >= 10000) {
|
|
|
+ relaxes = 0;
|
|
|
+ if (get_cycles() > timeout_time) {
|
|
|
+ quiesce_local_uvhub(hmaster);
|
|
|
+
|
|
|
+ /* single-thread the register change */
|
|
|
+ spin_lock(&hmaster->masks_lock);
|
|
|
+ mmr = uv_read_local_mmr(mmr_offset);
|
|
|
+ mask = 0UL;
|
|
|
+ mask |= (3UL < right_shift);
|
|
|
+ mask = ~mask;
|
|
|
+ mmr &= mask;
|
|
|
+ uv_write_local_mmr(mmr_offset, mmr);
|
|
|
+ spin_unlock(&hmaster->masks_lock);
|
|
|
+ end_uvhub_quiesce(hmaster);
|
|
|
+ stat->s_busy++;
|
|
|
return FLUSH_GIVEUP;
|
|
|
}
|
|
|
- /*
|
|
|
- * delays can hang the simulator
|
|
|
- udelay(1000);
|
|
|
- */
|
|
|
- destination_timeouts = 0;
|
|
|
}
|
|
|
}
|
|
|
- cpu_relax();
|
|
|
}
|
|
|
+ bcp->conseccompletes++;
|
|
|
return FLUSH_COMPLETE;
|
|
|
}
|
|
|
|
|
|
+static inline cycles_t
|
|
|
+sec_2_cycles(unsigned long sec)
|
|
|
+{
|
|
|
+ unsigned long ns;
|
|
|
+ cycles_t cyc;
|
|
|
+
|
|
|
+ ns = sec * 1000000000;
|
|
|
+ cyc = (ns << CYC2NS_SCALE_FACTOR)/(per_cpu(cyc2ns, smp_processor_id()));
|
|
|
+ return cyc;
|
|
|
+}
|
|
|
+
|
|
|
+/*
|
|
|
+ * conditionally add 1 to *v, unless *v is >= u
|
|
|
+ * return 0 if we cannot add 1 to *v because it is >= u
|
|
|
+ * return 1 if we can add 1 to *v because it is < u
|
|
|
+ * the add is atomic
|
|
|
+ *
|
|
|
+ * This is close to atomic_add_unless(), but this allows the 'u' value
|
|
|
+ * to be lowered below the current 'v'. atomic_add_unless can only stop
|
|
|
+ * on equal.
|
|
|
+ */
|
|
|
+static inline int atomic_inc_unless_ge(spinlock_t *lock, atomic_t *v, int u)
|
|
|
+{
|
|
|
+ spin_lock(lock);
|
|
|
+ if (atomic_read(v) >= u) {
|
|
|
+ spin_unlock(lock);
|
|
|
+ return 0;
|
|
|
+ }
|
|
|
+ atomic_inc(v);
|
|
|
+ spin_unlock(lock);
|
|
|
+ return 1;
|
|
|
+}
|
|
|
+
|
|
|
/**
|
|
|
* uv_flush_send_and_wait
|
|
|
*
|
|
|
- * Send a broadcast and wait for a broadcast message to complete.
|
|
|
+ * Send a broadcast and wait for it to complete.
|
|
|
*
|
|
|
- * The flush_mask contains the cpus the broadcast was sent to.
|
|
|
+ * The flush_mask contains the cpus the broadcast is to be sent to, plus
|
|
|
+ * cpus that are on the local uvhub.
|
|
|
*
|
|
|
- * Returns NULL if all remote flushing was done. The mask is zeroed.
|
|
|
+ * Returns NULL if all flushing represented in the mask was done. The mask
|
|
|
+ * is zeroed.
|
|
|
* Returns @flush_mask if some remote flushing remains to be done. The
|
|
|
- * mask will have some bits still set.
|
|
|
+ * mask will have some bits still set, representing any cpus on the local
|
|
|
+ * uvhub (not current cpu) and any on remote uvhubs if the broadcast failed.
|
|
|
*/
|
|
|
-const struct cpumask *uv_flush_send_and_wait(int cpu, int this_pnode,
|
|
|
- struct bau_desc *bau_desc,
|
|
|
- struct cpumask *flush_mask)
|
|
|
+const struct cpumask *uv_flush_send_and_wait(struct bau_desc *bau_desc,
|
|
|
+ struct cpumask *flush_mask,
|
|
|
+ struct bau_control *bcp)
|
|
|
{
|
|
|
- int completion_status = 0;
|
|
|
int right_shift;
|
|
|
- int tries = 0;
|
|
|
- int pnode;
|
|
|
+ int uvhub;
|
|
|
int bit;
|
|
|
+ int completion_status = 0;
|
|
|
+ int seq_number = 0;
|
|
|
+ long try = 0;
|
|
|
+ int cpu = bcp->uvhub_cpu;
|
|
|
+ int this_cpu = bcp->cpu;
|
|
|
+ int this_uvhub = bcp->uvhub;
|
|
|
unsigned long mmr_offset;
|
|
|
unsigned long index;
|
|
|
cycles_t time1;
|
|
|
cycles_t time2;
|
|
|
+ struct ptc_stats *stat = &per_cpu(ptcstats, bcp->cpu);
|
|
|
+ struct bau_control *smaster = bcp->socket_master;
|
|
|
+ struct bau_control *hmaster = bcp->uvhub_master;
|
|
|
+
|
|
|
+ /*
|
|
|
+ * Spin here while there are hmaster->max_concurrent or more active
|
|
|
+ * descriptors. This is the per-uvhub 'throttle'.
|
|
|
+ */
|
|
|
+ if (!atomic_inc_unless_ge(&hmaster->uvhub_lock,
|
|
|
+ &hmaster->active_descriptor_count,
|
|
|
+ hmaster->max_concurrent)) {
|
|
|
+ stat->s_throttles++;
|
|
|
+ do {
|
|
|
+ cpu_relax();
|
|
|
+ } while (!atomic_inc_unless_ge(&hmaster->uvhub_lock,
|
|
|
+ &hmaster->active_descriptor_count,
|
|
|
+ hmaster->max_concurrent));
|
|
|
+ }
|
|
|
+
|
|
|
+ while (hmaster->uvhub_quiesce)
|
|
|
+ cpu_relax();
|
|
|
|
|
|
if (cpu < UV_CPUS_PER_ACT_STATUS) {
|
|
|
mmr_offset = UVH_LB_BAU_SB_ACTIVATION_STATUS_0;
|
|
|
@@ -268,24 +557,108 @@ const struct cpumask *uv_flush_send_and_wait(int cpu, int this_pnode,
|
|
|
}
|
|
|
time1 = get_cycles();
|
|
|
do {
|
|
|
- tries++;
|
|
|
+ /*
|
|
|
+ * Every message from any given cpu gets a unique message
|
|
|
+ * sequence number. But retries use that same number.
|
|
|
+ * Our message may have timed out at the destination because
|
|
|
+ * all sw-ack resources are in use and there is a timeout
|
|
|
+ * pending there. In that case, our last send never got
|
|
|
+ * placed into the queue and we need to persist until it
|
|
|
+ * does.
|
|
|
+ *
|
|
|
+ * Make any retry a type MSG_RETRY so that the destination will
|
|
|
+ * free any resource held by a previous message from this cpu.
|
|
|
+ */
|
|
|
+ if (try == 0) {
|
|
|
+ /* use message type set by the caller the first time */
|
|
|
+ seq_number = bcp->message_number++;
|
|
|
+ } else {
|
|
|
+ /* use RETRY type on all the rest; same sequence */
|
|
|
+ bau_desc->header.msg_type = MSG_RETRY;
|
|
|
+ stat->s_retry_messages++;
|
|
|
+ }
|
|
|
+ bau_desc->header.sequence = seq_number;
|
|
|
index = (1UL << UVH_LB_BAU_SB_ACTIVATION_CONTROL_PUSH_SHFT) |
|
|
|
- cpu;
|
|
|
+ bcp->uvhub_cpu;
|
|
|
+ bcp->send_message = get_cycles();
|
|
|
+
|
|
|
uv_write_local_mmr(UVH_LB_BAU_SB_ACTIVATION_CONTROL, index);
|
|
|
+
|
|
|
+ try++;
|
|
|
completion_status = uv_wait_completion(bau_desc, mmr_offset,
|
|
|
- right_shift);
|
|
|
- } while (completion_status == FLUSH_RETRY);
|
|
|
+ right_shift, this_cpu, bcp, smaster, try);
|
|
|
+
|
|
|
+ if (completion_status == FLUSH_RETRY_PLUGGED) {
|
|
|
+ /*
|
|
|
+ * Our retries may be blocked by all destination swack
|
|
|
+ * resources being consumed, and a timeout pending. In
|
|
|
+ * that case hardware immediately returns the ERROR
|
|
|
+ * that looks like a destination timeout.
|
|
|
+ */
|
|
|
+ udelay(TIMEOUT_DELAY);
|
|
|
+ bcp->plugged_tries++;
|
|
|
+ if (bcp->plugged_tries >= PLUGSB4RESET) {
|
|
|
+ bcp->plugged_tries = 0;
|
|
|
+ quiesce_local_uvhub(hmaster);
|
|
|
+ spin_lock(&hmaster->queue_lock);
|
|
|
+ uv_reset_with_ipi(&bau_desc->distribution,
|
|
|
+ this_cpu);
|
|
|
+ spin_unlock(&hmaster->queue_lock);
|
|
|
+ end_uvhub_quiesce(hmaster);
|
|
|
+ bcp->ipi_attempts++;
|
|
|
+ stat->s_resets_plug++;
|
|
|
+ }
|
|
|
+ } else if (completion_status == FLUSH_RETRY_TIMEOUT) {
|
|
|
+ hmaster->max_concurrent = 1;
|
|
|
+ bcp->timeout_tries++;
|
|
|
+ udelay(TIMEOUT_DELAY);
|
|
|
+ if (bcp->timeout_tries >= TIMEOUTSB4RESET) {
|
|
|
+ bcp->timeout_tries = 0;
|
|
|
+ quiesce_local_uvhub(hmaster);
|
|
|
+ spin_lock(&hmaster->queue_lock);
|
|
|
+ uv_reset_with_ipi(&bau_desc->distribution,
|
|
|
+ this_cpu);
|
|
|
+ spin_unlock(&hmaster->queue_lock);
|
|
|
+ end_uvhub_quiesce(hmaster);
|
|
|
+ bcp->ipi_attempts++;
|
|
|
+ stat->s_resets_timeout++;
|
|
|
+ }
|
|
|
+ }
|
|
|
+ if (bcp->ipi_attempts >= 3) {
|
|
|
+ bcp->ipi_attempts = 0;
|
|
|
+ completion_status = FLUSH_GIVEUP;
|
|
|
+ break;
|
|
|
+ }
|
|
|
+ cpu_relax();
|
|
|
+ } while ((completion_status == FLUSH_RETRY_PLUGGED) ||
|
|
|
+ (completion_status == FLUSH_RETRY_TIMEOUT));
|
|
|
time2 = get_cycles();
|
|
|
- __get_cpu_var(ptcstats).sflush += (time2 - time1);
|
|
|
- if (tries > 1)
|
|
|
- __get_cpu_var(ptcstats).retriesok++;
|
|
|
|
|
|
- if (completion_status == FLUSH_GIVEUP) {
|
|
|
+ if ((completion_status == FLUSH_COMPLETE) && (bcp->conseccompletes > 5)
|
|
|
+ && (hmaster->max_concurrent < hmaster->max_concurrent_constant))
|
|
|
+ hmaster->max_concurrent++;
|
|
|
+
|
|
|
+ /*
|
|
|
+ * hold any cpu not timing out here; no other cpu currently held by
|
|
|
+ * the 'throttle' should enter the activation code
|
|
|
+ */
|
|
|
+ while (hmaster->uvhub_quiesce)
|
|
|
+ cpu_relax();
|
|
|
+ atomic_dec(&hmaster->active_descriptor_count);
|
|
|
+
|
|
|
+ /* guard against cycles wrap */
|
|
|
+ if (time2 > time1)
|
|
|
+ stat->s_time += (time2 - time1);
|
|
|
+ else
|
|
|
+ stat->s_requestor--; /* don't count this one */
|
|
|
+ if (completion_status == FLUSH_COMPLETE && try > 1)
|
|
|
+ stat->s_retriesok++;
|
|
|
+ else 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.
|
|
|
+ * the target cpu's, all of which are still in the mask.
|
|
|
*/
|
|
|
- __get_cpu_var(ptcstats).ptc_i++;
|
|
|
+ stat->s_giveup++;
|
|
|
return flush_mask;
|
|
|
}
|
|
|
|
|
|
@@ -294,18 +667,17 @@ const struct cpumask *uv_flush_send_and_wait(int cpu, int this_pnode,
|
|
|
* use the IPI method of shootdown on them.
|
|
|
*/
|
|
|
for_each_cpu(bit, flush_mask) {
|
|
|
- pnode = uv_cpu_to_pnode(bit);
|
|
|
- if (pnode == this_pnode)
|
|
|
+ uvhub = uv_cpu_to_blade_id(bit);
|
|
|
+ if (uvhub == this_uvhub)
|
|
|
continue;
|
|
|
cpumask_clear_cpu(bit, flush_mask);
|
|
|
}
|
|
|
if (!cpumask_empty(flush_mask))
|
|
|
return flush_mask;
|
|
|
+
|
|
|
return NULL;
|
|
|
}
|
|
|
|
|
|
-static DEFINE_PER_CPU(cpumask_var_t, uv_flush_tlb_mask);
|
|
|
-
|
|
|
/**
|
|
|
* uv_flush_tlb_others - globally purge translation cache of a virtual
|
|
|
* address or all TLB's
|
|
|
@@ -322,8 +694,8 @@ static DEFINE_PER_CPU(cpumask_var_t, uv_flush_tlb_mask);
|
|
|
* The caller has derived the cpumask from the mm_struct. This function
|
|
|
* is called only if there are bits set in the mask. (e.g. flush_tlb_page())
|
|
|
*
|
|
|
- * The cpumask is converted into a nodemask of the nodes containing
|
|
|
- * the cpus.
|
|
|
+ * The cpumask is converted into a uvhubmask of the uvhubs containing
|
|
|
+ * those cpus.
|
|
|
*
|
|
|
* Note that this function should be called with preemption disabled.
|
|
|
*
|
|
|
@@ -335,52 +707,82 @@ const struct cpumask *uv_flush_tlb_others(const struct cpumask *cpumask,
|
|
|
struct mm_struct *mm,
|
|
|
unsigned long va, unsigned int cpu)
|
|
|
{
|
|
|
- struct cpumask *flush_mask = __get_cpu_var(uv_flush_tlb_mask);
|
|
|
- int i;
|
|
|
- int bit;
|
|
|
- int pnode;
|
|
|
- int uv_cpu;
|
|
|
- int this_pnode;
|
|
|
+ int remotes;
|
|
|
+ int tcpu;
|
|
|
+ int uvhub;
|
|
|
int locals = 0;
|
|
|
struct bau_desc *bau_desc;
|
|
|
+ struct cpumask *flush_mask;
|
|
|
+ struct ptc_stats *stat;
|
|
|
+ struct bau_control *bcp;
|
|
|
|
|
|
- cpumask_andnot(flush_mask, cpumask, cpumask_of(cpu));
|
|
|
+ if (nobau)
|
|
|
+ return cpumask;
|
|
|
|
|
|
- uv_cpu = uv_blade_processor_id();
|
|
|
- this_pnode = uv_hub_info->pnode;
|
|
|
- bau_desc = __get_cpu_var(bau_control).descriptor_base;
|
|
|
- bau_desc += UV_ITEMS_PER_DESCRIPTOR * uv_cpu;
|
|
|
+ bcp = &per_cpu(bau_control, cpu);
|
|
|
+ /*
|
|
|
+ * Each sending cpu has a per-cpu mask which it fills from the caller's
|
|
|
+ * cpu mask. Only remote cpus are converted to uvhubs and copied.
|
|
|
+ */
|
|
|
+ flush_mask = (struct cpumask *)per_cpu(uv_flush_tlb_mask, cpu);
|
|
|
+ /*
|
|
|
+ * copy cpumask to flush_mask, removing current cpu
|
|
|
+ * (current cpu should already have been flushed by the caller and
|
|
|
+ * should never be returned if we return flush_mask)
|
|
|
+ */
|
|
|
+ cpumask_andnot(flush_mask, cpumask, cpumask_of(cpu));
|
|
|
+ if (cpu_isset(cpu, *cpumask))
|
|
|
+ locals++; /* current cpu was targeted */
|
|
|
|
|
|
- bau_nodes_clear(&bau_desc->distribution, UV_DISTRIBUTION_SIZE);
|
|
|
+ bau_desc = bcp->descriptor_base;
|
|
|
+ bau_desc += UV_ITEMS_PER_DESCRIPTOR * bcp->uvhub_cpu;
|
|
|
|
|
|
- i = 0;
|
|
|
- for_each_cpu(bit, flush_mask) {
|
|
|
- pnode = uv_cpu_to_pnode(bit);
|
|
|
- BUG_ON(pnode > (UV_DISTRIBUTION_SIZE - 1));
|
|
|
- if (pnode == this_pnode) {
|
|
|
+ bau_uvhubs_clear(&bau_desc->distribution, UV_DISTRIBUTION_SIZE);
|
|
|
+ remotes = 0;
|
|
|
+ for_each_cpu(tcpu, flush_mask) {
|
|
|
+ uvhub = uv_cpu_to_blade_id(tcpu);
|
|
|
+ if (uvhub == bcp->uvhub) {
|
|
|
locals++;
|
|
|
continue;
|
|
|
}
|
|
|
- bau_node_set(pnode - uv_partition_base_pnode,
|
|
|
- &bau_desc->distribution);
|
|
|
- i++;
|
|
|
+ bau_uvhub_set(uvhub, &bau_desc->distribution);
|
|
|
+ remotes++;
|
|
|
}
|
|
|
- if (i == 0) {
|
|
|
+ if (remotes == 0) {
|
|
|
/*
|
|
|
- * no off_node flushing; return status for local node
|
|
|
+ * No off_hub flushing; return status for local hub.
|
|
|
+ * Return the caller's mask if all were local (the current
|
|
|
+ * cpu may be in that mask).
|
|
|
*/
|
|
|
if (locals)
|
|
|
- return flush_mask;
|
|
|
+ return cpumask;
|
|
|
else
|
|
|
return NULL;
|
|
|
}
|
|
|
- __get_cpu_var(ptcstats).requestor++;
|
|
|
- __get_cpu_var(ptcstats).ntargeted += i;
|
|
|
+ stat = &per_cpu(ptcstats, cpu);
|
|
|
+ stat->s_requestor++;
|
|
|
+ stat->s_ntargcpu += remotes;
|
|
|
+ remotes = bau_uvhub_weight(&bau_desc->distribution);
|
|
|
+ stat->s_ntarguvhub += remotes;
|
|
|
+ if (remotes >= 16)
|
|
|
+ stat->s_ntarguvhub16++;
|
|
|
+ else if (remotes >= 8)
|
|
|
+ stat->s_ntarguvhub8++;
|
|
|
+ else if (remotes >= 4)
|
|
|
+ stat->s_ntarguvhub4++;
|
|
|
+ else if (remotes >= 2)
|
|
|
+ stat->s_ntarguvhub2++;
|
|
|
+ else
|
|
|
+ stat->s_ntarguvhub1++;
|
|
|
|
|
|
bau_desc->payload.address = va;
|
|
|
bau_desc->payload.sending_cpu = cpu;
|
|
|
|
|
|
- return uv_flush_send_and_wait(uv_cpu, this_pnode, bau_desc, flush_mask);
|
|
|
+ /*
|
|
|
+ * uv_flush_send_and_wait returns null if all cpu's were messaged, or
|
|
|
+ * the adjusted flush_mask if any cpu's were not messaged.
|
|
|
+ */
|
|
|
+ return uv_flush_send_and_wait(bau_desc, flush_mask, bcp);
|
|
|
}
|
|
|
|
|
|
/*
|
|
|
@@ -389,87 +791,70 @@ const struct cpumask *uv_flush_tlb_others(const struct cpumask *cpumask,
|
|
|
*
|
|
|
* We received a broadcast assist message.
|
|
|
*
|
|
|
- * Interrupts may have been disabled; this interrupt could represent
|
|
|
+ * Interrupts are 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.
|
|
|
+ * All cores/threads on this hub get this interrupt.
|
|
|
+ * The last one to see it does the software ack.
|
|
|
* (the resource will not be freed until noninterruptable cpus see this
|
|
|
- * interrupt; hardware will timeout the s/w ack and reply ERROR)
|
|
|
+ * interrupt; hardware may 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;
|
|
|
+ cycles_t time_start;
|
|
|
+ struct bau_payload_queue_entry *msg;
|
|
|
+ struct bau_control *bcp;
|
|
|
+ struct ptc_stats *stat;
|
|
|
+ struct msg_desc msgdesc;
|
|
|
+
|
|
|
+ time_start = get_cycles();
|
|
|
+ bcp = &per_cpu(bau_control, smp_processor_id());
|
|
|
+ stat = &per_cpu(ptcstats, smp_processor_id());
|
|
|
+ msgdesc.va_queue_first = bcp->va_queue_first;
|
|
|
+ msgdesc.va_queue_last = bcp->va_queue_last;
|
|
|
+ msg = bcp->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);
|
|
|
-
|
|
|
+ msgdesc.msg_slot = msg - msgdesc.va_queue_first;
|
|
|
+ msgdesc.sw_ack_slot = ffs(msg->sw_ack_vector) - 1;
|
|
|
+ msgdesc.msg = msg;
|
|
|
+ uv_bau_process_message(&msgdesc, bcp);
|
|
|
msg++;
|
|
|
- if (msg > va_queue_last)
|
|
|
- msg = va_queue_first;
|
|
|
- __get_cpu_var(bau_control).bau_msg_head = msg;
|
|
|
+ if (msg > msgdesc.va_queue_last)
|
|
|
+ msg = msgdesc.va_queue_first;
|
|
|
+ bcp->bau_msg_head = msg;
|
|
|
}
|
|
|
+ stat->d_time += (get_cycles() - time_start);
|
|
|
if (!count)
|
|
|
- __get_cpu_var(ptcstats).nomsg++;
|
|
|
+ stat->d_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);
|
|
|
+ stat->d_multmsg++;
|
|
|
+ ack_APIC_irq();
|
|
|
}
|
|
|
|
|
|
/*
|
|
|
* uv_enable_timeouts
|
|
|
*
|
|
|
- * Each target blade (i.e. blades that have cpu's) needs to have
|
|
|
+ * Each target uvhub (i.e. a uvhub that has no cpu's) needs to have
|
|
|
* shootdown message timeouts enabled. The timeout does not cause
|
|
|
* an interrupt, but causes an error message to be returned to
|
|
|
* the sender.
|
|
|
*/
|
|
|
static void uv_enable_timeouts(void)
|
|
|
{
|
|
|
- int blade;
|
|
|
- int nblades;
|
|
|
+ int uvhub;
|
|
|
+ int nuvhubs;
|
|
|
int pnode;
|
|
|
unsigned long mmr_image;
|
|
|
|
|
|
- nblades = uv_num_possible_blades();
|
|
|
+ nuvhubs = uv_num_possible_blades();
|
|
|
|
|
|
- for (blade = 0; blade < nblades; blade++) {
|
|
|
- if (!uv_blade_nr_possible_cpus(blade))
|
|
|
+ for (uvhub = 0; uvhub < nuvhubs; uvhub++) {
|
|
|
+ if (!uv_blade_nr_possible_cpus(uvhub))
|
|
|
continue;
|
|
|
|
|
|
- pnode = uv_blade_to_pnode(blade);
|
|
|
+ pnode = uv_blade_to_pnode(uvhub);
|
|
|
mmr_image =
|
|
|
uv_read_global_mmr64(pnode, UVH_LB_BAU_MISC_CONTROL);
|
|
|
/*
|
|
|
@@ -479,16 +864,16 @@ static void uv_enable_timeouts(void)
|
|
|
* To program the period, the SOFT_ACK_MODE must be off.
|
|
|
*/
|
|
|
mmr_image &= ~((unsigned long)1 <<
|
|
|
- UV_ENABLE_INTD_SOFT_ACK_MODE_SHIFT);
|
|
|
+ UVH_LB_BAU_MISC_CONTROL_ENABLE_INTD_SOFT_ACK_MODE_SHFT);
|
|
|
uv_write_global_mmr64
|
|
|
(pnode, UVH_LB_BAU_MISC_CONTROL, mmr_image);
|
|
|
/*
|
|
|
* Set the 4-bit period.
|
|
|
*/
|
|
|
mmr_image &= ~((unsigned long)0xf <<
|
|
|
- UV_INTD_SOFT_ACK_TIMEOUT_PERIOD_SHIFT);
|
|
|
+ UVH_LB_BAU_MISC_CONTROL_INTD_SOFT_ACK_TIMEOUT_PERIOD_SHFT);
|
|
|
mmr_image |= (UV_INTD_SOFT_ACK_TIMEOUT_PERIOD <<
|
|
|
- UV_INTD_SOFT_ACK_TIMEOUT_PERIOD_SHIFT);
|
|
|
+ UVH_LB_BAU_MISC_CONTROL_INTD_SOFT_ACK_TIMEOUT_PERIOD_SHFT);
|
|
|
uv_write_global_mmr64
|
|
|
(pnode, UVH_LB_BAU_MISC_CONTROL, mmr_image);
|
|
|
/*
|
|
|
@@ -497,7 +882,7 @@ static void uv_enable_timeouts(void)
|
|
|
* indicated in bits 2:0 (7 causes all of them to timeout).
|
|
|
*/
|
|
|
mmr_image |= ((unsigned long)1 <<
|
|
|
- UV_ENABLE_INTD_SOFT_ACK_MODE_SHIFT);
|
|
|
+ UVH_LB_BAU_MISC_CONTROL_ENABLE_INTD_SOFT_ACK_MODE_SHFT);
|
|
|
uv_write_global_mmr64
|
|
|
(pnode, UVH_LB_BAU_MISC_CONTROL, mmr_image);
|
|
|
}
|
|
|
@@ -522,9 +907,20 @@ static void uv_ptc_seq_stop(struct seq_file *file, void *data)
|
|
|
{
|
|
|
}
|
|
|
|
|
|
+static inline unsigned long long
|
|
|
+millisec_2_cycles(unsigned long millisec)
|
|
|
+{
|
|
|
+ unsigned long ns;
|
|
|
+ unsigned long long cyc;
|
|
|
+
|
|
|
+ ns = millisec * 1000;
|
|
|
+ cyc = (ns << CYC2NS_SCALE_FACTOR)/(per_cpu(cyc2ns, smp_processor_id()));
|
|
|
+ return cyc;
|
|
|
+}
|
|
|
+
|
|
|
/*
|
|
|
- * Display the statistics thru /proc
|
|
|
- * data points to the cpu number
|
|
|
+ * Display the statistics thru /proc.
|
|
|
+ * 'data' points to the cpu number
|
|
|
*/
|
|
|
static int uv_ptc_seq_show(struct seq_file *file, void *data)
|
|
|
{
|
|
|
@@ -535,78 +931,155 @@ static int uv_ptc_seq_show(struct seq_file *file, void *data)
|
|
|
|
|
|
if (!cpu) {
|
|
|
seq_printf(file,
|
|
|
- "# cpu requestor requestee one all sretry dretry ptc_i ");
|
|
|
+ "# cpu sent stime numuvhubs numuvhubs16 numuvhubs8 ");
|
|
|
seq_printf(file,
|
|
|
- "sw_ack sflush dflush sok dnomsg dmult starget\n");
|
|
|
+ "numuvhubs4 numuvhubs2 numuvhubs1 numcpus dto ");
|
|
|
+ seq_printf(file,
|
|
|
+ "retries rok resetp resett giveup sto bz throt ");
|
|
|
+ seq_printf(file,
|
|
|
+ "sw_ack recv rtime all ");
|
|
|
+ seq_printf(file,
|
|
|
+ "one mult none retry canc nocan reset rcan\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",
|
|
|
+ /* source side statistics */
|
|
|
+ seq_printf(file,
|
|
|
+ "cpu %d %ld %ld %ld %ld %ld %ld %ld %ld %ld %ld ",
|
|
|
+ cpu, stat->s_requestor, cycles_2_us(stat->s_time),
|
|
|
+ stat->s_ntarguvhub, stat->s_ntarguvhub16,
|
|
|
+ stat->s_ntarguvhub8, stat->s_ntarguvhub4,
|
|
|
+ stat->s_ntarguvhub2, stat->s_ntarguvhub1,
|
|
|
+ stat->s_ntargcpu, stat->s_dtimeout);
|
|
|
+ seq_printf(file, "%ld %ld %ld %ld %ld %ld %ld %ld ",
|
|
|
+ stat->s_retry_messages, stat->s_retriesok,
|
|
|
+ stat->s_resets_plug, stat->s_resets_timeout,
|
|
|
+ stat->s_giveup, stat->s_stimeout,
|
|
|
+ stat->s_busy, stat->s_throttles);
|
|
|
+ /* destination side statistics */
|
|
|
+ seq_printf(file,
|
|
|
+ "%lx %ld %ld %ld %ld %ld %ld %ld %ld %ld %ld %ld\n",
|
|
|
uv_read_global_mmr64(uv_cpu_to_pnode(cpu),
|
|
|
UVH_LB_BAU_INTD_SOFTWARE_ACKNOWLEDGE),
|
|
|
- stat->sflush, stat->dflush,
|
|
|
- stat->retriesok, stat->nomsg,
|
|
|
- stat->multmsg, stat->ntargeted);
|
|
|
+ stat->d_requestee, cycles_2_us(stat->d_time),
|
|
|
+ stat->d_alltlb, stat->d_onetlb, stat->d_multmsg,
|
|
|
+ stat->d_nomsg, stat->d_retries, stat->d_canceled,
|
|
|
+ stat->d_nocanceled, stat->d_resets,
|
|
|
+ stat->d_rcanceled);
|
|
|
}
|
|
|
|
|
|
return 0;
|
|
|
}
|
|
|
|
|
|
/*
|
|
|
+ * -1: resetf the statistics
|
|
|
* 0: display meaning of the statistics
|
|
|
- * >0: retry limit
|
|
|
+ * >0: maximum concurrent active descriptors per uvhub (throttle)
|
|
|
*/
|
|
|
static ssize_t uv_ptc_proc_write(struct file *file, const char __user *user,
|
|
|
size_t count, loff_t *data)
|
|
|
{
|
|
|
- long newmode;
|
|
|
+ int cpu;
|
|
|
+ long input_arg;
|
|
|
char optstr[64];
|
|
|
+ struct ptc_stats *stat;
|
|
|
+ struct bau_control *bcp;
|
|
|
|
|
|
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) {
|
|
|
+ if (strict_strtol(optstr, 10, &input_arg) < 0) {
|
|
|
printk(KERN_DEBUG "%s is invalid\n", optstr);
|
|
|
return -EINVAL;
|
|
|
}
|
|
|
|
|
|
- if (newmode == 0) {
|
|
|
+ if (input_arg == 0) {
|
|
|
printk(KERN_DEBUG "# cpu: cpu number\n");
|
|
|
+ printk(KERN_DEBUG "Sender statistics:\n");
|
|
|
+ printk(KERN_DEBUG
|
|
|
+ "sent: number of shootdown messages sent\n");
|
|
|
+ printk(KERN_DEBUG
|
|
|
+ "stime: time spent sending messages\n");
|
|
|
+ printk(KERN_DEBUG
|
|
|
+ "numuvhubs: number of hubs targeted with shootdown\n");
|
|
|
+ printk(KERN_DEBUG
|
|
|
+ "numuvhubs16: number times 16 or more hubs targeted\n");
|
|
|
+ printk(KERN_DEBUG
|
|
|
+ "numuvhubs8: number times 8 or more hubs targeted\n");
|
|
|
+ printk(KERN_DEBUG
|
|
|
+ "numuvhubs4: number times 4 or more hubs targeted\n");
|
|
|
+ printk(KERN_DEBUG
|
|
|
+ "numuvhubs2: number times 2 or more hubs targeted\n");
|
|
|
+ printk(KERN_DEBUG
|
|
|
+ "numuvhubs1: number times 1 hub targeted\n");
|
|
|
+ printk(KERN_DEBUG
|
|
|
+ "numcpus: number of cpus targeted with shootdown\n");
|
|
|
+ printk(KERN_DEBUG
|
|
|
+ "dto: number of destination timeouts\n");
|
|
|
+ printk(KERN_DEBUG
|
|
|
+ "retries: destination timeout retries sent\n");
|
|
|
+ printk(KERN_DEBUG
|
|
|
+ "rok: : destination timeouts successfully retried\n");
|
|
|
+ printk(KERN_DEBUG
|
|
|
+ "resetp: ipi-style resource resets for plugs\n");
|
|
|
+ printk(KERN_DEBUG
|
|
|
+ "resett: ipi-style resource resets for timeouts\n");
|
|
|
+ printk(KERN_DEBUG
|
|
|
+ "giveup: fall-backs to ipi-style shootdowns\n");
|
|
|
+ printk(KERN_DEBUG
|
|
|
+ "sto: number of source timeouts\n");
|
|
|
+ printk(KERN_DEBUG
|
|
|
+ "bz: number of stay-busy's\n");
|
|
|
+ printk(KERN_DEBUG
|
|
|
+ "throt: number times spun in throttle\n");
|
|
|
+ printk(KERN_DEBUG "Destination side statistics:\n");
|
|
|
printk(KERN_DEBUG
|
|
|
- "requestor: times this cpu was the flush requestor\n");
|
|
|
+ "sw_ack: image of UVH_LB_BAU_INTD_SOFTWARE_ACKNOWLEDGE\n");
|
|
|
printk(KERN_DEBUG
|
|
|
- "requestee: times this cpu was requested to flush its TLBs\n");
|
|
|
+ "recv: shootdown messages received\n");
|
|
|
printk(KERN_DEBUG
|
|
|
- "one: times requested to flush a single address\n");
|
|
|
+ "rtime: time spent processing messages\n");
|
|
|
printk(KERN_DEBUG
|
|
|
- "all: times requested to flush all TLB's\n");
|
|
|
+ "all: shootdown all-tlb messages\n");
|
|
|
printk(KERN_DEBUG
|
|
|
- "sretry: number of retries of source-side timeouts\n");
|
|
|
+ "one: shootdown one-tlb messages\n");
|
|
|
printk(KERN_DEBUG
|
|
|
- "dretry: number of retries of destination-side timeouts\n");
|
|
|
+ "mult: interrupts that found multiple messages\n");
|
|
|
printk(KERN_DEBUG
|
|
|
- "ptc_i: times UV fell through to IPI-style flushes\n");
|
|
|
+ "none: interrupts that found no messages\n");
|
|
|
printk(KERN_DEBUG
|
|
|
- "sw_ack: image of UVH_LB_BAU_INTD_SOFTWARE_ACKNOWLEDGE\n");
|
|
|
+ "retry: number of retry messages processed\n");
|
|
|
printk(KERN_DEBUG
|
|
|
- "sflush_us: cycles spent in uv_flush_tlb_others()\n");
|
|
|
+ "canc: number messages canceled by retries\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");
|
|
|
+ "nocan: number retries that found nothing to cancel\n");
|
|
|
printk(KERN_DEBUG
|
|
|
- "dmult: interrupts with multiple messages\n");
|
|
|
- printk(KERN_DEBUG "starget: nodes targeted\n");
|
|
|
+ "reset: number of ipi-style reset requests processed\n");
|
|
|
+ printk(KERN_DEBUG
|
|
|
+ "rcan: number messages canceled by reset requests\n");
|
|
|
+ } else if (input_arg == -1) {
|
|
|
+ for_each_present_cpu(cpu) {
|
|
|
+ stat = &per_cpu(ptcstats, cpu);
|
|
|
+ memset(stat, 0, sizeof(struct ptc_stats));
|
|
|
+ }
|
|
|
} else {
|
|
|
- uv_bau_retry_limit = newmode;
|
|
|
- printk(KERN_DEBUG "timeout retry limit:%d\n",
|
|
|
- uv_bau_retry_limit);
|
|
|
+ uv_bau_max_concurrent = input_arg;
|
|
|
+ bcp = &per_cpu(bau_control, smp_processor_id());
|
|
|
+ if (uv_bau_max_concurrent < 1 ||
|
|
|
+ uv_bau_max_concurrent > bcp->cpus_in_uvhub) {
|
|
|
+ printk(KERN_DEBUG
|
|
|
+ "Error: BAU max concurrent %d; %d is invalid\n",
|
|
|
+ bcp->max_concurrent, uv_bau_max_concurrent);
|
|
|
+ return -EINVAL;
|
|
|
+ }
|
|
|
+ printk(KERN_DEBUG "Set BAU max concurrent:%d\n",
|
|
|
+ uv_bau_max_concurrent);
|
|
|
+ for_each_present_cpu(cpu) {
|
|
|
+ bcp = &per_cpu(bau_control, cpu);
|
|
|
+ bcp->max_concurrent = uv_bau_max_concurrent;
|
|
|
+ }
|
|
|
}
|
|
|
|
|
|
return count;
|
|
|
@@ -649,80 +1122,31 @@ static int __init uv_ptc_init(void)
|
|
|
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;
|
|
|
- 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));
|
|
|
-
|
|
|
- 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,
|
|
|
- struct bau_control *bau_tablesp,
|
|
|
- struct bau_desc *adp)
|
|
|
-{
|
|
|
- struct bau_control *bcp;
|
|
|
- int cpu;
|
|
|
-
|
|
|
- for_each_present_cpu(cpu) {
|
|
|
- if (blade != uv_cpu_to_blade_id(cpu))
|
|
|
- continue;
|
|
|
-
|
|
|
- bcp = (struct bau_control *)&per_cpu(bau_control, cpu);
|
|
|
- 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->msg_statuses = bau_tablesp->msg_statuses;
|
|
|
- bcp->descriptor_base = adp;
|
|
|
- }
|
|
|
-}
|
|
|
-
|
|
|
/*
|
|
|
* initialize the sending side's sending buffers
|
|
|
*/
|
|
|
-static struct bau_desc * __init
|
|
|
+static void
|
|
|
uv_activation_descriptor_init(int node, int pnode)
|
|
|
{
|
|
|
int i;
|
|
|
+ int cpu;
|
|
|
unsigned long pa;
|
|
|
unsigned long m;
|
|
|
unsigned long n;
|
|
|
- struct bau_desc *adp;
|
|
|
- struct bau_desc *ad2;
|
|
|
+ struct bau_desc *bau_desc;
|
|
|
+ struct bau_desc *bd2;
|
|
|
+ struct bau_control *bcp;
|
|
|
|
|
|
/*
|
|
|
* each bau_desc is 64 bytes; there are 8 (UV_ITEMS_PER_DESCRIPTOR)
|
|
|
- * per cpu; and up to 32 (UV_ADP_SIZE) cpu's per blade
|
|
|
+ * per cpu; and up to 32 (UV_ADP_SIZE) cpu's per uvhub
|
|
|
*/
|
|
|
- adp = (struct bau_desc *)kmalloc_node(sizeof(struct bau_desc)*
|
|
|
+ bau_desc = (struct bau_desc *)kmalloc_node(sizeof(struct bau_desc)*
|
|
|
UV_ADP_SIZE*UV_ITEMS_PER_DESCRIPTOR, GFP_KERNEL, node);
|
|
|
- BUG_ON(!adp);
|
|
|
+ BUG_ON(!bau_desc);
|
|
|
|
|
|
- pa = uv_gpa(adp); /* need the real nasid*/
|
|
|
- n = uv_gpa_to_pnode(pa);
|
|
|
+ pa = uv_gpa(bau_desc); /* need the real nasid*/
|
|
|
+ n = pa >> uv_nshift;
|
|
|
m = pa & uv_mmask;
|
|
|
|
|
|
uv_write_global_mmr64(pnode, UVH_LB_BAU_SB_DESCRIPTOR_BASE,
|
|
|
@@ -731,96 +1155,188 @@ uv_activation_descriptor_init(int node, int pnode)
|
|
|
/*
|
|
|
* initializing all 8 (UV_ITEMS_PER_DESCRIPTOR) descriptors for each
|
|
|
* cpu even though we only use the first one; one descriptor can
|
|
|
- * describe a broadcast to 256 nodes.
|
|
|
+ * describe a broadcast to 256 uv hubs.
|
|
|
*/
|
|
|
- for (i = 0, ad2 = adp; i < (UV_ADP_SIZE*UV_ITEMS_PER_DESCRIPTOR);
|
|
|
- i++, ad2++) {
|
|
|
- memset(ad2, 0, sizeof(struct bau_desc));
|
|
|
- ad2->header.sw_ack_flag = 1;
|
|
|
+ for (i = 0, bd2 = bau_desc; i < (UV_ADP_SIZE*UV_ITEMS_PER_DESCRIPTOR);
|
|
|
+ i++, bd2++) {
|
|
|
+ memset(bd2, 0, sizeof(struct bau_desc));
|
|
|
+ bd2->header.sw_ack_flag = 1;
|
|
|
/*
|
|
|
- * base_dest_nodeid is the first node in the partition, so
|
|
|
- * the bit map will indicate partition-relative node numbers.
|
|
|
- * note that base_dest_nodeid is actually a nasid.
|
|
|
+ * base_dest_nodeid is the nasid (pnode<<1) of the first uvhub
|
|
|
+ * in the partition. The bit map will indicate uvhub numbers,
|
|
|
+ * which are 0-N in a partition. Pnodes are unique system-wide.
|
|
|
*/
|
|
|
- ad2->header.base_dest_nodeid = uv_partition_base_pnode << 1;
|
|
|
- ad2->header.dest_subnodeid = 0x10; /* the LB */
|
|
|
- ad2->header.command = UV_NET_ENDPOINT_INTD;
|
|
|
- ad2->header.int_both = 1;
|
|
|
+ bd2->header.base_dest_nodeid = uv_partition_base_pnode << 1;
|
|
|
+ bd2->header.dest_subnodeid = 0x10; /* the LB */
|
|
|
+ bd2->header.command = UV_NET_ENDPOINT_INTD;
|
|
|
+ bd2->header.int_both = 1;
|
|
|
/*
|
|
|
* all others need to be set to zero:
|
|
|
* fairness chaining multilevel count replied_to
|
|
|
*/
|
|
|
}
|
|
|
- return adp;
|
|
|
+ for_each_present_cpu(cpu) {
|
|
|
+ if (pnode != uv_blade_to_pnode(uv_cpu_to_blade_id(cpu)))
|
|
|
+ continue;
|
|
|
+ bcp = &per_cpu(bau_control, cpu);
|
|
|
+ bcp->descriptor_base = bau_desc;
|
|
|
+ }
|
|
|
}
|
|
|
|
|
|
/*
|
|
|
* initialize the destination side's receiving buffers
|
|
|
+ * entered for each uvhub in the partition
|
|
|
+ * - node is first node (kernel memory notion) on the uvhub
|
|
|
+ * - pnode is the uvhub's physical identifier
|
|
|
*/
|
|
|
-static struct bau_payload_queue_entry * __init
|
|
|
-uv_payload_queue_init(int node, int pnode, struct bau_control *bau_tablesp)
|
|
|
+static void
|
|
|
+uv_payload_queue_init(int node, int pnode)
|
|
|
{
|
|
|
- struct bau_payload_queue_entry *pqp;
|
|
|
- unsigned long pa;
|
|
|
int pn;
|
|
|
+ int cpu;
|
|
|
char *cp;
|
|
|
+ unsigned long pa;
|
|
|
+ struct bau_payload_queue_entry *pqp;
|
|
|
+ struct bau_payload_queue_entry *pqp_malloc;
|
|
|
+ struct bau_control *bcp;
|
|
|
|
|
|
pqp = (struct bau_payload_queue_entry *) kmalloc_node(
|
|
|
(DEST_Q_SIZE + 1) * sizeof(struct bau_payload_queue_entry),
|
|
|
GFP_KERNEL, node);
|
|
|
BUG_ON(!pqp);
|
|
|
+ pqp_malloc = pqp;
|
|
|
|
|
|
cp = (char *)pqp + 31;
|
|
|
pqp = (struct bau_payload_queue_entry *)(((unsigned long)cp >> 5) << 5);
|
|
|
- bau_tablesp->va_queue_first = pqp;
|
|
|
+
|
|
|
+ for_each_present_cpu(cpu) {
|
|
|
+ if (pnode != uv_cpu_to_pnode(cpu))
|
|
|
+ continue;
|
|
|
+ /* for every cpu on this pnode: */
|
|
|
+ bcp = &per_cpu(bau_control, cpu);
|
|
|
+ bcp->va_queue_first = pqp;
|
|
|
+ bcp->bau_msg_head = pqp;
|
|
|
+ bcp->va_queue_last = pqp + (DEST_Q_SIZE - 1);
|
|
|
+ }
|
|
|
/*
|
|
|
* need the pnode of where the memory was really allocated
|
|
|
*/
|
|
|
pa = uv_gpa(pqp);
|
|
|
- pn = uv_gpa_to_pnode(pa);
|
|
|
+ pn = pa >> uv_nshift;
|
|
|
uv_write_global_mmr64(pnode,
|
|
|
UVH_LB_BAU_INTD_PAYLOAD_QUEUE_FIRST,
|
|
|
((unsigned long)pn << 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));
|
|
|
+ uv_physnodeaddr(pqp + (DEST_Q_SIZE - 1)));
|
|
|
+ /* in effect, all msg_type's are set to MSG_NOOP */
|
|
|
memset(pqp, 0, sizeof(struct bau_payload_queue_entry) * DEST_Q_SIZE);
|
|
|
-
|
|
|
- return pqp;
|
|
|
}
|
|
|
|
|
|
/*
|
|
|
- * Initialization of each UV blade's structures
|
|
|
+ * Initialization of each UV hub's structures
|
|
|
*/
|
|
|
-static int __init uv_init_blade(int blade)
|
|
|
+static void __init uv_init_uvhub(int uvhub, int vector)
|
|
|
{
|
|
|
int node;
|
|
|
int pnode;
|
|
|
- unsigned long pa;
|
|
|
unsigned long apicid;
|
|
|
- struct bau_desc *adp;
|
|
|
- struct bau_payload_queue_entry *pqp;
|
|
|
- struct bau_control *bau_tablesp;
|
|
|
-
|
|
|
- node = blade_to_first_node(blade);
|
|
|
- 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, bau_tablesp, adp);
|
|
|
+
|
|
|
+ node = uvhub_to_first_node(uvhub);
|
|
|
+ pnode = uv_blade_to_pnode(uvhub);
|
|
|
+ uv_activation_descriptor_init(node, pnode);
|
|
|
+ uv_payload_queue_init(node, pnode);
|
|
|
/*
|
|
|
* the below initialization can't be in firmware because the
|
|
|
* messaging IRQ will be determined by the OS
|
|
|
*/
|
|
|
- apicid = blade_to_first_apicid(blade);
|
|
|
- pa = uv_read_global_mmr64(pnode, UVH_BAU_DATA_CONFIG);
|
|
|
+ apicid = uvhub_to_first_apicid(uvhub);
|
|
|
uv_write_global_mmr64(pnode, UVH_BAU_DATA_CONFIG,
|
|
|
- ((apicid << 32) | UV_BAU_MESSAGE));
|
|
|
- return 0;
|
|
|
+ ((apicid << 32) | vector));
|
|
|
+}
|
|
|
+
|
|
|
+/*
|
|
|
+ * initialize the bau_control structure for each cpu
|
|
|
+ */
|
|
|
+static void uv_init_per_cpu(int nuvhubs)
|
|
|
+{
|
|
|
+ int i, j, k;
|
|
|
+ int cpu;
|
|
|
+ int pnode;
|
|
|
+ int uvhub;
|
|
|
+ short socket = 0;
|
|
|
+ struct bau_control *bcp;
|
|
|
+ struct uvhub_desc *bdp;
|
|
|
+ struct socket_desc *sdp;
|
|
|
+ struct bau_control *hmaster = NULL;
|
|
|
+ struct bau_control *smaster = NULL;
|
|
|
+ struct socket_desc {
|
|
|
+ short num_cpus;
|
|
|
+ short cpu_number[16];
|
|
|
+ };
|
|
|
+ struct uvhub_desc {
|
|
|
+ short num_sockets;
|
|
|
+ short num_cpus;
|
|
|
+ short uvhub;
|
|
|
+ short pnode;
|
|
|
+ struct socket_desc socket[2];
|
|
|
+ };
|
|
|
+ struct uvhub_desc *uvhub_descs;
|
|
|
+
|
|
|
+ uvhub_descs = (struct uvhub_desc *)
|
|
|
+ kmalloc(nuvhubs * sizeof(struct uvhub_desc), GFP_KERNEL);
|
|
|
+ memset(uvhub_descs, 0, nuvhubs * sizeof(struct uvhub_desc));
|
|
|
+ for_each_present_cpu(cpu) {
|
|
|
+ bcp = &per_cpu(bau_control, cpu);
|
|
|
+ memset(bcp, 0, sizeof(struct bau_control));
|
|
|
+ spin_lock_init(&bcp->masks_lock);
|
|
|
+ bcp->max_concurrent = uv_bau_max_concurrent;
|
|
|
+ pnode = uv_cpu_hub_info(cpu)->pnode;
|
|
|
+ uvhub = uv_cpu_hub_info(cpu)->numa_blade_id;
|
|
|
+ bdp = &uvhub_descs[uvhub];
|
|
|
+ bdp->num_cpus++;
|
|
|
+ bdp->uvhub = uvhub;
|
|
|
+ bdp->pnode = pnode;
|
|
|
+ /* time interval to catch a hardware stay-busy bug */
|
|
|
+ bcp->timeout_interval = millisec_2_cycles(3);
|
|
|
+ /* kludge: assume uv_hub.h is constant */
|
|
|
+ socket = (cpu_physical_id(cpu)>>5)&1;
|
|
|
+ if (socket >= bdp->num_sockets)
|
|
|
+ bdp->num_sockets = socket+1;
|
|
|
+ sdp = &bdp->socket[socket];
|
|
|
+ sdp->cpu_number[sdp->num_cpus] = cpu;
|
|
|
+ sdp->num_cpus++;
|
|
|
+ }
|
|
|
+ socket = 0;
|
|
|
+ for_each_possible_blade(uvhub) {
|
|
|
+ bdp = &uvhub_descs[uvhub];
|
|
|
+ for (i = 0; i < bdp->num_sockets; i++) {
|
|
|
+ sdp = &bdp->socket[i];
|
|
|
+ for (j = 0; j < sdp->num_cpus; j++) {
|
|
|
+ cpu = sdp->cpu_number[j];
|
|
|
+ bcp = &per_cpu(bau_control, cpu);
|
|
|
+ bcp->cpu = cpu;
|
|
|
+ if (j == 0) {
|
|
|
+ smaster = bcp;
|
|
|
+ if (i == 0)
|
|
|
+ hmaster = bcp;
|
|
|
+ }
|
|
|
+ bcp->cpus_in_uvhub = bdp->num_cpus;
|
|
|
+ bcp->cpus_in_socket = sdp->num_cpus;
|
|
|
+ bcp->socket_master = smaster;
|
|
|
+ bcp->uvhub_master = hmaster;
|
|
|
+ for (k = 0; k < DEST_Q_SIZE; k++)
|
|
|
+ bcp->socket_acknowledge_count[k] = 0;
|
|
|
+ bcp->uvhub_cpu =
|
|
|
+ uv_cpu_hub_info(cpu)->blade_processor_id;
|
|
|
+ }
|
|
|
+ socket++;
|
|
|
+ }
|
|
|
+ }
|
|
|
+ kfree(uvhub_descs);
|
|
|
}
|
|
|
|
|
|
/*
|
|
|
@@ -828,38 +1344,54 @@ static int __init uv_init_blade(int blade)
|
|
|
*/
|
|
|
static int __init uv_bau_init(void)
|
|
|
{
|
|
|
- int blade;
|
|
|
- int nblades;
|
|
|
+ int uvhub;
|
|
|
+ int pnode;
|
|
|
+ int nuvhubs;
|
|
|
int cur_cpu;
|
|
|
+ int vector;
|
|
|
+ unsigned long mmr;
|
|
|
|
|
|
if (!is_uv_system())
|
|
|
return 0;
|
|
|
|
|
|
+ if (nobau)
|
|
|
+ return 0;
|
|
|
+
|
|
|
for_each_possible_cpu(cur_cpu)
|
|
|
zalloc_cpumask_var_node(&per_cpu(uv_flush_tlb_mask, cur_cpu),
|
|
|
GFP_KERNEL, cpu_to_node(cur_cpu));
|
|
|
|
|
|
- uv_bau_retry_limit = 1;
|
|
|
+ uv_bau_max_concurrent = MAX_BAU_CONCURRENT;
|
|
|
+ uv_nshift = uv_hub_info->m_val;
|
|
|
uv_mmask = (1UL << uv_hub_info->m_val) - 1;
|
|
|
- nblades = uv_num_possible_blades();
|
|
|
+ nuvhubs = uv_num_possible_blades();
|
|
|
|
|
|
- uv_bau_table_bases = (struct bau_control **)
|
|
|
- kmalloc(nblades * sizeof(struct bau_control *), GFP_KERNEL);
|
|
|
- BUG_ON(!uv_bau_table_bases);
|
|
|
+ uv_init_per_cpu(nuvhubs);
|
|
|
|
|
|
uv_partition_base_pnode = 0x7fffffff;
|
|
|
- for (blade = 0; blade < nblades; blade++)
|
|
|
- if (uv_blade_nr_possible_cpus(blade) &&
|
|
|
- (uv_blade_to_pnode(blade) < uv_partition_base_pnode))
|
|
|
- uv_partition_base_pnode = uv_blade_to_pnode(blade);
|
|
|
- for (blade = 0; blade < nblades; blade++)
|
|
|
- if (uv_blade_nr_possible_cpus(blade))
|
|
|
- uv_init_blade(blade);
|
|
|
-
|
|
|
- alloc_intr_gate(UV_BAU_MESSAGE, uv_bau_message_intr1);
|
|
|
+ for (uvhub = 0; uvhub < nuvhubs; uvhub++)
|
|
|
+ if (uv_blade_nr_possible_cpus(uvhub) &&
|
|
|
+ (uv_blade_to_pnode(uvhub) < uv_partition_base_pnode))
|
|
|
+ uv_partition_base_pnode = uv_blade_to_pnode(uvhub);
|
|
|
+
|
|
|
+ vector = UV_BAU_MESSAGE;
|
|
|
+ for_each_possible_blade(uvhub)
|
|
|
+ if (uv_blade_nr_possible_cpus(uvhub))
|
|
|
+ uv_init_uvhub(uvhub, vector);
|
|
|
+
|
|
|
uv_enable_timeouts();
|
|
|
+ alloc_intr_gate(vector, uv_bau_message_intr1);
|
|
|
+
|
|
|
+ for_each_possible_blade(uvhub) {
|
|
|
+ pnode = uv_blade_to_pnode(uvhub);
|
|
|
+ /* INIT the bau */
|
|
|
+ uv_write_global_mmr64(pnode, UVH_LB_BAU_SB_ACTIVATION_CONTROL,
|
|
|
+ ((unsigned long)1 << 63));
|
|
|
+ mmr = 1; /* should be 1 to broadcast to both sockets */
|
|
|
+ uv_write_global_mmr64(pnode, UVH_BAU_DATA_BROADCAST, mmr);
|
|
|
+ }
|
|
|
|
|
|
return 0;
|
|
|
}
|
|
|
-__initcall(uv_bau_init);
|
|
|
-__initcall(uv_ptc_init);
|
|
|
+core_initcall(uv_bau_init);
|
|
|
+core_initcall(uv_ptc_init);
|
Linus Torvalds