diff options
| author | Hitoshi Mitake <mitake@dcl.info.waseda.ac.jp> | 2010-11-25 10:04:53 +0300 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2010-11-26 10:15:57 +0300 |
| commit | ea7872b9d6a81101f6ba0ec141544a62fea35876 (patch) | |
| tree | 569f13213fc6b1487b00cb403376b4fd70821302 /tools/perf/bench | |
| parent | 49ce8fc651794878189fd5f273228832cdfb5be9 (diff) | |
| download | linux-ea7872b9d6a81101f6ba0ec141544a62fea35876.tar.xz | |
perf bench: Add feature that measures the performance of the arch/x86/lib/memcpy_64.S memcpy routines via 'perf bench mem'
This patch ports arch/x86/lib/memcpy_64.S to perf bench mem
memcpy for benchmarking memcpy() in userland with tricky and
dirty way.
util/include/asm/cpufeature.h, util/include/asm/dwarf2.h, and
util/include/linux/linkage.h are mostly dummy files with small
wrappers, so that we are able to include memcpy_64.S
unmodified.
Signed-off-by: Hitoshi Mitake <mitake@dcl.info.waseda.ac.jp>
Cc: h.mitake@gmail.com
Cc: Miao Xie <miaox@cn.fujitsu.com>
Cc: Ma Ling <ling.ma@intel.com>
Cc: Zhao Yakui <yakui.zhao@intel.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Andi Kleen <andi@firstfloor.org>
LKML-Reference: <1290668693-27068-2-git-send-email-mitake@dcl.info.waseda.ac.jp>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'tools/perf/bench')
| -rw-r--r-- | tools/perf/bench/mem-memcpy-arch.h | 12 | ||||
| -rw-r--r-- | tools/perf/bench/mem-memcpy-x86-64-asm-def.h | 4 | ||||
| -rw-r--r-- | tools/perf/bench/mem-memcpy-x86-64-asm.S | 2 |
3 files changed, 18 insertions, 0 deletions
diff --git a/tools/perf/bench/mem-memcpy-arch.h b/tools/perf/bench/mem-memcpy-arch.h new file mode 100644 index 000000000000..a72e36cb5394 --- /dev/null +++ b/tools/perf/bench/mem-memcpy-arch.h @@ -0,0 +1,12 @@ + +#ifdef ARCH_X86_64 + +#define MEMCPY_FN(fn, name, desc) \ + extern void *fn(void *, const void *, size_t); + +#include "mem-memcpy-x86-64-asm-def.h" + +#undef MEMCPY_FN + +#endif + diff --git a/tools/perf/bench/mem-memcpy-x86-64-asm-def.h b/tools/perf/bench/mem-memcpy-x86-64-asm-def.h new file mode 100644 index 000000000000..d588b87696fc --- /dev/null +++ b/tools/perf/bench/mem-memcpy-x86-64-asm-def.h @@ -0,0 +1,4 @@ + +MEMCPY_FN(__memcpy, + "x86-64-unrolled", + "unrolled memcpy() in arch/x86/lib/memcpy_64.S") diff --git a/tools/perf/bench/mem-memcpy-x86-64-asm.S b/tools/perf/bench/mem-memcpy-x86-64-asm.S new file mode 100644 index 000000000000..a57b66e853c2 --- /dev/null +++ b/tools/perf/bench/mem-memcpy-x86-64-asm.S @@ -0,0 +1,2 @@ + +#include "../../../arch/x86/lib/memcpy_64.S" |