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authorArnaldo Carvalho de Melo <acme@redhat.com>2017-08-17 16:44:36 -0300
committerArnaldo Carvalho de Melo <acme@redhat.com>2017-08-17 16:51:25 -0300
commit4717e03cc7e826818c3f9bd60e9c304a3309c3ad (patch)
treec38b1cd52ab65bd4631512e2052d17fe12d55c25 /tools/perf/perf-sys.h
parent5d9cdc1181c34f959e9fb8e24624223172071871 (diff)
downloadlinux-4717e03cc7e826818c3f9bd60e9c304a3309c3ad.tar.bz2
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>
Diffstat (limited to 'tools/perf/perf-sys.h')
-rw-r--r--tools/perf/perf-sys.h9
1 files changed, 0 insertions, 9 deletions
diff --git a/tools/perf/perf-sys.h b/tools/perf/perf-sys.h
index e4b717e9eb6c..2aaa7366cdc2 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,