1 files changed, 19 insertions, 0 deletions

diff --git a/arch/powerpc/include/asm/lppaca.h b/arch/powerpc/include/asm/lppaca.h
index 6d02624b622c..cfb85ec85750 100644
--- a/arch/powerpc/include/asm/lppaca.h
+++ b/arch/powerpc/include/asm/lppaca.h
@@ -172,6 +172,25 @@ struct slb_shadow {
 
 extern struct slb_shadow slb_shadow[];
 
+/*
+ * 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))
+
 #endif /* CONFIG_PPC_BOOK3S */
 #endif /* __KERNEL__ */
 #endif /* _ASM_POWERPC_LPPACA_H */