Re: [PATCH 1/4] perf tools: Add a test for decoding of new x86 instructions

Path	csiph.com!goblin2!goblin.stu.neva.ru!aioe.org!news.servidellagleba.it!bofh.it!news.nic.it!robomod
From	Adrian Hunter <adrian.hunter@intel.com>
Newsgroups	linux.kernel
Subject	Re: [PATCH 1/4] perf tools: Add a test for decoding of new x86 instructions
Date	Tue, 01 Sep 2015 10:30:03 +0200
Message-ID	<q3P75-160-31@gated-at.bofh.it> (permalink)
References	<q3xWx-1u3-5@gated-at.bofh.it> <q3xWy-1u3-27@gated-at.bofh.it> <q3HsS-6Nl-7@gated-at.bofh.it>
X-Original-To	平松雅巳 / HIRAMATU，MASAMI <masami.hiramatsu.pt@hitachi.com>, Arnaldo Carvalho de Melo <acme@kernel.org>
X-Extloop1	1
X-Ironport-Av	E=Sophos;i="5.17,447,1437462000"; d="scan'208";a="759804760"
Organization	Intel Finland Oy, Registered Address: PL 281, 00181 Helsinki, Business Identity Code: 0357606 - 4, Domiciled in Helsinki
User-Agent	Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Thunderbird/31.8.0
MIME-Version	1.0
Content-Type	text/plain; charset=utf-8
Content-Transfer-Encoding	8bit
Sender	robomod@news.nic.it
List-ID	<linux-kernel.vger.kernel.org>
X-Mailing-List	linux-kernel@vger.kernel.org
Approved	robomod@news.nic.it
Lines	31
X-Original-Cc	"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>, Jiri Olsa <jolsa@redhat.com>, Andy Lutomirski <luto@amacapital.net>, Denys Vlasenko <dvlasenk@redhat.com>, Peter Zijlstra <peterz@infradead.org>, Ingo Molnar <mingo@kernel.org>, Dave Hansen <dave.hansen@linux.intel.com>, Qiaowei Ren <qiaowei.ren@intel.com>, "H. Peter Anvin" <hpa@zytor.com>, Thomas Gleixner <tglx@linutronix.de>
X-Original-Date	Tue, 01 Sep 2015 11:17:34 +0300
X-Original-Message-ID	<55E55F1E.6030804@intel.com>
X-Original-References	<1441029522-20235-1-git-send-email-adrian.hunter@intel.com> <1441029522-20235-2-git-send-email-adrian.hunter@intel.com> <50399556C9727B4D88A595C8584AAB37524FD276@GSjpTKYDCembx32.service.hitachi.net>
X-Original-Sender	linux-kernel-owner@vger.kernel.org
Xref	csiph.com linux.kernel:1216674

Show key headers only | View raw

On 01/09/15 03:18, 平松雅巳 / HIRAMATU，MASAMI wrote:
>> From: Adrian Hunter [mailto:adrian.hunter@intel.com]
>>
>> Add a new test titled:
>>
>> 	Test x86 instruction decoder - new instructions
>>
>> The purpose of this test is to check the instruction decoder
>> after new instructions have been added.  Initially, MPX
>> instructions are tested which are already supported, but the
>> definitions in x86-opcode-map.txt will be tweaked in a
>> subsequent patch, after which this test can be run to verify
>> those changes.
> 
> Hmm, btw, why should this test in perf? It seems that we need
> this test in kselftest or build-time selftest.
> I prefer to put this in arch/x86/tools/ or lib/. What would you
> think ?

There are 2 reasons perf tools needs a test:
	1. perf tools is source code independent from the kernel i.e. it has its
own copy of the instruction decoder.
	2. perf tools test also tests the Intel PT decoder's categorization of
instructions.


--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

Thread

[PATCH 0/4] x86/insn: perf tools: Add a few new x86 instructions Adrian Hunter <adrian.hunter@intel.com> - 2015-08-31 16:10 +0200
  [PATCH 4/4] x86/insn: perf tools: Add new memory instructions Adrian Hunter <adrian.hunter@intel.com> - 2015-08-31 16:10 +0200
  Re: [PATCH 0/4] x86/insn: perf tools: Add a few new x86 instructions Arnaldo Carvalho de Melo <acme@kernel.org> - 2015-08-31 16:50 +0200
  Re: [PATCH 1/4] perf tools: Add a test for decoding of new x86 instructions Adrian Hunter <adrian.hunter@intel.com> - 2015-09-01 10:30 +0200
    RE: [PATCH 1/4] perf tools: Add a test for decoding of new x86  instructions 平松雅巳 / HIRAMATU，MASAMI   <masami.hiramatsu.pt@hitachi.com> - 2015-09-01 13:10 +0200
  Re: [PATCH 0/4] x86/insn: perf tools: Add a few new x86 instructions Ingo Molnar <mingo@kernel.org> - 2015-09-01 11:00 +0200
    RE: [PATCH 0/4] x86/insn: perf tools: Add a few new x86 instructions 平松雅巳 / HIRAMATU，MASAMI   <masami.hiramatsu.pt@hitachi.com> - 2015-09-01 13:40 +0200
      Re: [PATCH 0/4] x86/insn: perf tools: Add a few new x86 instructions Adrian Hunter <adrian.hunter@intel.com> - 2015-09-01 14:20 +0200
        Re: [PATCH 0/4] x86/insn: perf tools: Add a few new x86 instructions Ingo Molnar <mingo@kernel.org> - 2015-09-01 15:00 +0200
        RE: [PATCH 0/4] x86/insn: perf tools: Add a few new x86 instructions 平松雅巳 / HIRAMATU，MASAMI   <masami.hiramatsu.pt@hitachi.com> - 2015-09-01 17:20 +0200
    Re: [PATCH 0/4] x86/insn: perf tools: Add a few new x86 instructions Adrian Hunter <adrian.hunter@intel.com> - 2015-09-01 14:20 +0200
      Re: [PATCH 0/4] x86/insn: perf tools: Add a few new x86 instructions Jiri Olsa <jolsa@redhat.com> - 2015-09-01 16:00 +0200
        Re: [PATCH 0/4] x86/insn: perf tools: Add a few new x86 instructions Arnaldo Carvalho de Melo <acme@kernel.org> - 2015-09-01 17:00 +0200
      Re: [PATCH 0/4] x86/insn: perf tools: Add a few new x86 instructions Arnaldo Carvalho de Melo <acme@kernel.org> - 2015-09-01 16:00 +0200
      Re: [PATCH 0/4] x86/insn: perf tools: Add a few new x86 instructions Arnaldo Carvalho de Melo <acme@kernel.org> - 2015-09-01 22:00 +0200
        Re: [PATCH 0/4] x86/insn: perf tools: Add a few new x86 instructions Jiri Olsa <jolsa@redhat.com> - 2015-09-02 08:00 +0200
          RE: [PATCH 0/4] x86/insn: perf tools: Add a few new x86 instructions 平松雅巳 / HIRAMATU，MASAMI   <masami.hiramatsu.pt@hitachi.com> - 2015-09-02 08:50 +0200
            Re: [PATCH 0/4] x86/insn: perf tools: Add a few new x86 instructions Ingo Molnar <mingo@kernel.org> - 2015-09-02 09:40 +0200
              RE: [PATCH 0/4] x86/insn: perf tools: Add a few new x86 instructions 平松雅巳 / HIRAMATU，MASAMI   <masami.hiramatsu.pt@hitachi.com> - 2015-09-02 12:30 +0200

csiph-web