Enabled HAVE_PERF_EVENTS for RISC-V

arch/riscv/Kconfig

@@ -25,6 +25,7 @@ config RISCV
 	select HAVE_DMA_API_DEBUG
 	select HAVE_DMA_CONTIGUOUS
 	select HAVE_GENERIC_DMA_COHERENT
+	select HAVE_PERF_EVENTS
 	select IRQ_DOMAIN
 	select NO_BOOTMEM
 	select RISCV_ISA_A if SMP

arch/riscv/include/asm/Kbuild

@@ -26,6 +26,7 @@ generic-y += kdebug.h
 generic-y += kmap_types.h
 generic-y += kvm_para.h
 generic-y += local.h
+generic-y += local64.h
 generic-y += mm-arch-hooks.h
 generic-y += mman.h
 generic-y += module.h

arch/riscv/include/asm/perf_event.h

@@ -0,0 +1,13 @@
+/*
+ * Copyright (C) 2018 SiFive
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public Licence
+ * as published by the Free Software Foundation; either version
+ * 2 of the Licence, or (at your option) any later version.
+ */
+
+#ifndef _ASM_RISCV_PERF_EVENT_H
+#define _ASM_RISCV_PERF_EVENT_H
+
+#endif /* _ASM_RISCV_PERF_EVENT_H */