mirror of
https://github.com/torvalds/linux.git
synced 2024-12-26 21:02:19 +00:00
07d207ac0c
We will need it for atomic.h, so move it from the ad-hoc tools/perf/ place to a tools/ subset of the kernel arch/ hierarchy. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Borislav Petkov <bp@suse.de> Cc: David Ahern <dsahern@gmail.com> Cc: Don Zickus <dzickus@redhat.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/n/tip-zv4x77074resrkl4ayzf5e7d@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
31 lines
658 B
C
31 lines
658 B
C
/*
|
|
* Copied from the kernel sources:
|
|
*
|
|
* Copyright IBM Corp. 1999, 2009
|
|
*
|
|
* Author(s): Martin Schwidefsky <schwidefsky@de.ibm.com>
|
|
*/
|
|
|
|
#ifndef __TOOLS_LINUX_ASM_BARRIER_H
|
|
#define __TOOLS_LINUX_ASM_BARRIER_H
|
|
|
|
/*
|
|
* Force strict CPU ordering.
|
|
* And yes, this is required on UP too when we're talking
|
|
* to devices.
|
|
*/
|
|
|
|
#ifdef CONFIG_HAVE_MARCH_Z196_FEATURES
|
|
/* Fast-BCR without checkpoint synchronization */
|
|
#define __ASM_BARRIER "bcr 14,0\n"
|
|
#else
|
|
#define __ASM_BARRIER "bcr 15,0\n"
|
|
#endif
|
|
|
|
#define mb() do { asm volatile(__ASM_BARRIER : : : "memory"); } while (0)
|
|
|
|
#define rmb() mb()
|
|
#define wmb() mb()
|
|
|
|
#endif /* __TOOLS_LIB_ASM_BARRIER_H */
|