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perf tools: Move sh barrier.h stuff to tools/arch/sh/include/asm/barrier.h

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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-6xqb97k782wqp1r3v6jqayki@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Arnaldo Carvalho de Melo 2015-05-07 17:09:48 -03:00
parent c6e39db1d0
commit 827634adde
4 changed files with 35 additions and 9 deletions
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32
tools/arch/sh/include/asm/barrier.h Normal file
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@ -0,0 +1,32 @@
/*
* Copied from the kernel sources:
*
* Copyright (C) 1999, 2000 Niibe Yutaka & Kaz Kojima
* Copyright (C) 2002 Paul Mundt
*/
#ifndef __TOOLS_LINUX_ASM_SH_BARRIER_H
#define __TOOLS_LINUX_ASM_SH_BARRIER_H
/*
* A brief note on ctrl_barrier(), the control register write barrier.
*
* Legacy SH cores typically require a sequence of 8 nops after
* modification of a control register in order for the changes to take
* effect. On newer cores (like the sh4a and sh5) this is accomplished
* with icbi.
*
* Also note that on sh4a in the icbi case we can forego a synco for the
* write barrier, as it's not necessary for control registers.
*
* Historically we have only done this type of barrier for the MMUCR, but
* it's also necessary for the CCR, so we make it generic here instead.
*/
#if defined(__SH4A__) || defined(__SH5__)
#define mb() __asm__ __volatile__ ("synco": : :"memory")
#define rmb() mb()
#define wmb() mb()
#endif
#include <asm-generic/barrier.h>
#endif /* __TOOLS_LINUX_ASM_SH_BARRIER_H */

2
tools/include/asm/barrier.h
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@ -4,4 +4,6 @@
#include "../../arch/powerpc/include/asm/barrier.h"
#elif defined(__s390__)
#include "../../arch/s390/include/asm/barrier.h"
#elif defined(__sh__)
#include "../../arch/sh/include/asm/barrier.h"
#endif

1
tools/perf/MANIFEST
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@ -1,6 +1,7 @@
tools/perf
tools/arch/powerpc/include/asm/barrier.h
tools/arch/s390/include/asm/barrier.h
tools/arch/sh/include/asm/barrier.h
tools/arch/x86/include/asm/barrier.h
tools/scripts
tools/build

9
tools/perf/perf-sys.h
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@ -46,15 +46,6 @@
#endif
#ifdef __sh__
#if defined(__SH4A__) || defined(__SH5__)
# define mb() asm volatile("synco" ::: "memory")
# define wmb() asm volatile("synco" ::: "memory")
# define rmb() asm volatile("synco" ::: "memory")
#else
# define mb() asm volatile("" ::: "memory")
# define wmb() asm volatile("" ::: "memory")
# define rmb() asm volatile("" ::: "memory")
#endif
#define CPUINFO_PROC {"cpu type"}
#endif