[PATCH] compiler.h: Fix barrier_data() on clang

[Randy Dunlap]

On 11/16/20 10:30 AM, Andreas Schwab wrote:
> On Nov 16 2020, Randy Dunlap wrote:
> 
>> What kernel version are you building?
> 
> 5.10-rc4
> 
> Andreas.

OK, thanks.

My build machine is slow, but I have a patch that I am testing:

---
From: Randy Dunlap <rdunlap at infradead.org>

riscv's <vdso/processor.h> uses barrier() so it should
#include <asm/barrier.h> to prevent build errors.

Reported-by: Andreas Schwab <schwab at linux-m68k.org>
---
  arch/riscv/include/asm/vdso/processor.h |    2 ++
  1 file changed, 2 insertions(+)

--- lnx-510-rc4.orig/arch/riscv/include/asm/vdso/processor.h
+++ lnx-510-rc4/arch/riscv/include/asm/vdso/processor.h
@@ -4,6 +4,8 @@

  #ifndef __ASSEMBLY__

+#include <asm/barrier.h>
+
  static inline void cpu_relax(void)
  {
  #ifdef __riscv_muldiv