tools/arch/mips/include/asm/barrier.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #ifndef _TOOLS_LINUX_ASM_MIPS_BARRIER_H
   3 #define _TOOLS_LINUX_ASM_MIPS_BARRIER_H
   4 /*
   5  * FIXME: This came from tools/perf/perf-sys.h, where it was first introduced
   6  * in c1e028ef40b8d6943b767028ba17d4f2ba020edb, more work needed to make it
   7  * more closely follow the Linux kernel arch/mips/include/asm/barrier.h file.
   8  * Probably when we continue work on tools/ Kconfig support to have all the
   9  * CONFIG_ needed for properly doing that.
  10  */
  11 #define mb()            asm volatile(                                   \
  12                                 ".set   mips2\n\t"                      \
  13                                 "sync\n\t"                              \
  14                                 ".set   mips0"                          \
  15                                 : /* no output */                       \
  16                                 : /* no input */                        \
  17                                 : "memory")
  18 #define wmb()   mb()
  19 #define rmb()   mb()
  20
  21 #endif /* _TOOLS_LINUX_ASM_MIPS_BARRIER_H */