From: tip-bot for Arnaldo Carvalho de Melo <tipbot@zytor.com>
To: linux-tip-commits@vger.kernel.org
Cc: namhyung@kernel.org, dsahern@gmail.com, mingo@kernel.org,
wangnan0@huawei.com, jolsa@kernel.org, tglx@linutronix.de,
hpa@zytor.com, adrian.hunter@intel.com,
linux-kernel@vger.kernel.org, acme@redhat.com,
a.p.zijlstra@chello.nl
Subject: [tip:perf/core] perf tools: Remove unused cpu_relax() macros
Date: Tue, 22 Aug 2017 03:25:25 -0700 [thread overview]
Message-ID: <tip-3l2su9c58eaq4twjzrf9uu08@git.kernel.org> (raw)
Commit-ID: 4717e03cc7e826818c3f9bd60e9c304a3309c3ad
Gitweb: http://git.kernel.org/tip/4717e03cc7e826818c3f9bd60e9c304a3309c3ad
Author: Arnaldo Carvalho de Melo <acme@redhat.com>
AuthorDate: Thu, 17 Aug 2017 16:44:36 -0300
Committer: Arnaldo Carvalho de Melo <acme@redhat.com>
CommitDate: Thu, 17 Aug 2017 16:51:25 -0300
perf tools: Remove unused cpu_relax() macros
Since 195564390210 ("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>
---
tools/perf/perf-sys.h | 9 ---------
1 file changed, 9 deletions(-)
diff --git a/tools/perf/perf-sys.h b/tools/perf/perf-sys.h
index e4b717e..2aaa736 100644
--- a/tools/perf/perf-sys.h
+++ b/tools/perf/perf-sys.h
@@ -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,
reply other threads:[~2017-08-22 10:27 UTC|newest]
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