+/*
+ * Layout of entries in the hypervisor's dispatch trace log buffer.
+ */
+struct dtl_entry {
+ u8 dispatch_reason;
+ u8 preempt_reason;
+ u16 processor_id;
+ u32 enqueue_to_dispatch_time;
+ u32 ready_to_enqueue_time;
+ u32 waiting_to_ready_time;
+ u64 timebase;
+ u64 fault_addr;
+ u64 srr0;
+ u64 srr1;
+};
+
+#define DISPATCH_LOG_BYTES 4096 /* bytes per cpu */
+#define N_DISPATCH_LOG (DISPATCH_LOG_BYTES / sizeof(struct dtl_entry))
+
+/*
+ * When CONFIG_VIRT_CPU_ACCOUNTING = y, the cpu accounting code controls
+ * reading from the dispatch trace log. If other code wants to consume
+ * DTL entries, it can set this pointer to a function that will get
+ * called once for each DTL entry that gets processed.
+ */
+extern void (*dtl_consumer)(struct dtl_entry *entry, u64 index);
+