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perf tools: Remove unused cpu_relax() macros 

Since 1955643902 ("perf_counter: kerneltop: simplify data_head read")
we do not use it, and this was way back in 2009, remove it before some
other arch maintainer adds its implementation, like so many did,
needlessly :-)

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-3l2su9c58eaq4twjzrf9uu08@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
hifive-unleashed-5.1
Arnaldo Carvalho de Melo 2017-08-17 16:44:36 -03:00
parent 5d9cdc1181
commit 4717e03cc7
1 changed files with 0 additions and 9 deletions
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9
tools/perf/perf-sys.h
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@ -10,12 +10,10 @@
#include <asm/barrier.h>
#if defined(__i386__)
#define cpu_relax() asm volatile("rep; nop" ::: "memory");
#define CPUINFO_PROC {"model name"}
#endif
#if defined(__x86_64__)
#define cpu_relax() asm volatile("rep; nop" ::: "memory");
#define CPUINFO_PROC {"model name"}
#endif
@ -44,7 +42,6 @@
#endif
#ifdef __ia64__
#define cpu_relax() asm volatile ("hint @pause" ::: "memory")
#define CPUINFO_PROC {"model name"}
#endif
@ -53,7 +50,6 @@
#endif
#ifdef __aarch64__
#define cpu_relax() asm volatile("yield" ::: "memory")
#endif
#ifdef __mips__
@ -73,14 +69,9 @@
#endif
#ifdef __tile__
#define cpu_relax() asm volatile ("mfspr zero, PASS" ::: "memory")
#define CPUINFO_PROC {"model name"}
#endif
#ifndef cpu_relax
#define cpu_relax() barrier()
#endif
static inline int
sys_perf_event_open(struct perf_event_attr *attr,
pid_t pid, int cpu, int group_fd,