From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933098Ab2LHMPF (ORCPT ); Sat, 8 Dec 2012 07:15:05 -0500 Received: from nm13.bullet.mail.bf1.yahoo.com ([98.139.212.172]:20447 "EHLO nm13.bullet.mail.bf1.yahoo.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932325Ab2LHMPB convert rfc822-to-8bit (ORCPT ); Sat, 8 Dec 2012 07:15:01 -0500 X-Yahoo-Newman-Property: ymail-3 X-Yahoo-Newman-Id: 251948.71774.bm@omp1061.mail.bf1.yahoo.com DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=s1024; d=yahoo.com; h=X-YMail-OSG:Received:X-Rocket-MIMEInfo:X-Mailer:References:Message-ID:Date:From:Reply-To:Subject:To:Cc:In-Reply-To:MIME-Version:Content-Type:Content-Transfer-Encoding; b=qGRCcNlkS5E9rfaYOGmCleG8By8rcUhZY9IjwkVW6ldYn6wwxRKk1UuRoMQMoDNzgXG4Yi/J7OCh9y/4k5ifuRdJfgTebDtYqtGyvjlwihQIw4pCMBzgmPrGGgOm7PtXoVUP6zy7LcIl4Ni6OZeNKmRlM0n7wJKMMuyXKL9pdVs=; X-YMail-OSG: 4o1ehvwVM1nCQ4_pEPP3ln60Jcf4XNpUELpLnJ4kWhHd45I c4Nqo7NqBm6db2_kRN0ineoFPbKAaQBniax7p.2Yh9XBAXnnnfMI8G4f57cj 0ctXTqYVrRXDdoIuB1ofBVpwxffnB86nAcrEcKZp8rOjOa7HJBnrafgQsvDL OXyILUimVyEFore7Ox9szvJYMTM8DypYuhlGPez8SedFZ4_595aE50fLQggo LC7b6x6sg7SCNIOZ_8xQHdwT9PkmEX4w0D1wTjKOXWn.O4Y5LFeQN8DNU4_k QnNb6e1k.tY21ifEqw2LilIfIHxm5stF6bb_hwEKhpc41r7L3jJYRr2x3V5k UaciF2caaykajR8_hug9pp9wKU4ENyHzQncG4CtOJb5arn6AAS8TDEABLc8U phxfb07__5uE1tZXQuFQQ805.ZxhwHYEzxfnBOUUaVEszcKLxi555an5gd8B jJwlKNGVVRLxLOLVmg3S1pDO.bhGycmTbXzjnDn55PRH27dx0yIiF4oCWAAI HiCwzaTUknxs2d0faZu23L443F29IWRnRU9TFxje9RYQkMGzyK0LLnnOBvgX XLptVXE5nfiqUEqY79BH4NopSYd90DoiCgwZhmOYOqACot1UxoVkd14LBUwP uVCfSwMBvrQCNE1sTjpo4olJR8OZjGkOJnZnsjJ7v1WSCkr_9ii1XA0eNWnH h.QmS5PIdDmQJjcSov1gDJyxE3yhSO8xcR4xwInkiJEQuphpMVpLp8BEH9l2 rkpQLQEY_93vbmQuoJmmn3Hg.rQh2.pQnB1tjnBU6ikWQWHXKh_8- X-Rocket-MIMEInfo: 001.001,UGxlYXNlIGNjIG1lIG9uIHJlcGxpZXMgYXMgSSBhbSBub3QgYSByZWd1bGFyIHN1YnNjcmliZXIgdG8gbGttbC4gwqBUaGFuayB5b3UuCgoKCkkgdGVzdGVkIHRoZSBhdHRhY2hlZCBwYXRjaCB3cml0dGVuwqBieSBBbmRyw6kgUmFtbml0esKgdXNpbmcgdGhyZWUgZGlmZmVyZW50IG1hY2hpbmVzIHJ1bm5pbmcgYSBnZW5lcmljIHg4Ni02NCBrZXJuZWwgYW5kIGFuIG90aGVyd2lzZSBpZGVudGljYWwga2VybmVsIHJ1bm5pbmcgd2l0aCB0aGUgb3B0aW1pemVkIGdjYyBvcHRpb25zLsKgCgpDb25jbHVzaW9uOiABMAEBAQE- X-Mailer: YahooMailWebService/0.8.128.478 References: <1354745355.79857.YahooMailNeo@web140001.mail.bf1.yahoo.com> <20121205222738.GB6239@liondog.tnic> <1354748412.17691.YahooMailNeo@web140005.mail.bf1.yahoo.com> <20121205230835.GF6222@liondog.tnic> Message-ID: <1354968839.35825.YahooMailNeo@web140006.mail.bf1.yahoo.com> Date: Sat, 8 Dec 2012 04:13:59 -0800 (PST) From: John Reply-To: John Subject: [PATCH] Expand CPU compiler options To: Borislav Petkov Cc: "linux-kernel@vger.kernel.org" In-Reply-To: <20121205230835.GF6222@liondog.tnic> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: 8BIT Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Please cc me on replies as I am not a regular subscriber to lkml.  Thank you. I tested the attached patch written by André Ramnitz using three different machines running a generic x86-64 kernel and an otherwise identical kernel running with the optimized gcc options.  Conclusion: There are small but real speed increases using a make endpoint to running with this patch. Details: 1) Three test machines: Intel Xeon X3360, Intel i7-2620M, Intel Core i7-3660K. 2) All ran the make benchmark (linked below) 35 times while booted into a 'generic' kernel. Then all ran the same make benchmark 35 times after booting into an optimized kernel. Below are the optimizations chosen for each machine. 2a) X3360 = core2 2b) i7-2620M = corei7-avx 2c) i7-3660K = core-avx-i 3) Analyzed resulting distributions for statistical significance via ANOVA plots that clearly show statistically significant albeit small differences. Links to ANOVA plots: http://s19.postimage.org/68urcofzn/corei7_avx.png http://s19.postimage.org/ozwomuak3/core_avx_i.png http://s19.postimage.org/d0l6fj4z7/core2.png References: Bash script that controls the benchmark: https://github.com/graysky2/bin/blob/master/bench Log file generated by script: http://repo-ck.com/bench/compile_time_optimization.txt.gz --- --- linux-3.6/arch/x86/include/asm/module.h2012-04-29 18:43:58.239336240 -0700 +++ linux-3.6.mod/arch/x86/include/asm/module.h2012-04-29 18:43:41.609545221 -0700 @@ -17,6 +17,14 @@  #define MODULE_PROC_FAMILY "586MMX "  #elif defined CONFIG_MCORE2  #define MODULE_PROC_FAMILY "CORE2 " +#elif defined CONFIG_MCOREI7 +#define MODULE_PROC_FAMILY "COREI7 " +#elif defined CONFIG_MCOREI7AVX +#define MODULE_PROC_FAMILY "COREI7AVX " +#elif defined CONFIG_MCOREAVXI +#define MODULE_PROC_FAMILY "COREAVXI " +#elif defined CONFIG_MCOREAVX2 +#define MODULE_PROC_FAMILY "COREAVX2 "  #elif defined CONFIG_MATOM  #define MODULE_PROC_FAMILY "ATOM "  #elif defined CONFIG_M686 @@ -35,6 +43,14 @@  #define MODULE_PROC_FAMILY "K7 "  #elif defined CONFIG_MK8  #define MODULE_PROC_FAMILY "K8 " +#elif defined CONFIG_MBARCELONA +#define MODULE_PROC_FAMILY "BARCELONA " +#elif defined CONFIG_MBOBCAT +#define MODULE_PROC_FAMILY "BOBCAT " +#elif defined CONFIG_MBULLDOZER +#define MODULE_PROC_FAMILY "BULLDOZER " +#elif defined CONFIG_MPILEDRIVER +#define MODULE_PROC_FAMILY "PILEDRIVER "  #elif defined CONFIG_MELAN  #define MODULE_PROC_FAMILY "ELAN "  #elif defined CONFIG_MCRUSOE --- linux-3.6/arch/x86/Kconfig.cpu2012-04-29 18:43:58.249336198 -0700 +++ linux-3.6.mod/arch/x86/Kconfig.cpu2012-04-29 18:40:46.091751798 -0700 @@ -147,7 +147,7 @@      config MK6 -bool "K6/K6-II/K6-III" +bool "AMD K6/K6-II/K6-III"  depends on X86_32  ---help---    Select this for an AMD K6-family processor.  Enables use of @@ -155,7 +155,7 @@    flags to GCC.    config MK7 -bool "Athlon/Duron/K7" +bool "AMD Athlon/Duron/K7"  depends on X86_32  ---help---    Select this for an AMD Athlon K7-family processor.  Enables use of @@ -163,12 +163,40 @@    flags to GCC.    config MK8 -bool "Opteron/Athlon64/Hammer/K8" +bool "AMD Opteron/Athlon64/Hammer/K8"  ---help---    Select this for an AMD Opteron or Athlon64 Hammer-family processor.    Enables use of some extended instructions, and passes appropriate    optimization flags to GCC.   +config MBARCELONA +bool "AMD Barcelona" +---help--- +  Select this for AMD Barcelona and newer processors. + +  Enables -march=barcelona + +config MBOBCAT +bool "AMD Bobcat" +---help--- +  Select this for AMD Bobcat processors. + +  Enables -march=btver1 + +config MBULLDOZER +bool "AMD Bulldozer" +---help--- +  Select this for AMD Bulldozer processors. + +  Enables -march=bdver1 + +config MPILEDRIVER +bool "AMD Piledriver" +---help--- +  Select this for AMD Piledriver processors. + +  Enables -march=bdver2 +  config MCRUSOE  bool "Crusoe"  depends on X86_32 @@ -260,7 +288,7 @@    in /proc/cpuinfo. Family 15 is an older Xeon, Family 6 a newer one.    config MCORE2 -bool "Core 2/newer Xeon" +bool "Intel Core 2"  ---help---      Select this for Intel Core 2 and newer Core 2 Xeons (Xeon 51xx and @@ -268,6 +296,41 @@    family in /proc/cpuinfo. Newer ones have 6 and older ones 15    (not a typo)   +  Enables -march=core2 + +config MCOREI7 +bool "Intel Core i7" +---help--- + +  Select this for the Intel Nehalem platform. Intel Nehalem proecessors +  include Core i3, i5, i7, Xeon: 34xx, 35xx, 55xx, 56xx, 75xx processors. + +  Enables -march=corei7 + +config MCOREI7AVX +bool "Intel Core 2nd Gen AVX" +---help--- + +  Select this for 2nd Gen Core processors including Sandy Bridge. + +  Enables -march=corei7-avx + +config MCOREAVXI +bool "Intel Core 3rd Gen AVX" +---help--- + +  Select this for 3rd Gen Core processors including Ivy Bridge. + +  Enables -march=core-avx-i + +config MCOREAVX2 +bool "Intel Core AVX-2" +---help--- + +  Select this for AVX-2 enabled processors including Haswell. + +  Enables -march=corei7-avx-2 +  config MATOM  bool "Intel Atom"  ---help--- @@ -312,7 +375,7 @@  config X86_L1_CACHE_SHIFT  int  default "7" if MPENTIUM4 || MPSC -default "6" if MK7 || MK8 || MPENTIUMM || MCORE2 || MATOM || MVIAC7 || X86_GENERIC || GENERIC_CPU +default "6" if MK7 || MK8 || MBARCELONA || MBOBCAT || MBULLDOZER || MPILEDRIVER || MPENTIUMM || MCORE2 || MCOREI7 || MCOREI7AVX || MCOREAVXI || MCOREAVX2 || MATOM || MVIAC7 || X86_GENERIC || GENERIC_CPU  default "4" if MELAN || M486 || M386 || MGEODEGX1  default "5" if MWINCHIP3D || MWINCHIPC6 || MCRUSOE || MEFFICEON || MCYRIXIII || MK6 || MPENTIUMIII || MPENTIUMII || M686 || M586MMX || M586TSC || M586 || MVIAC3_2 || MGEODE_LX   @@ -363,11 +426,11 @@    config X86_INTEL_USERCOPY  def_bool y -depends on MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M586MMX || X86_GENERIC || MK8 || MK7 || MEFFICEON || MCORE2 +depends on MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M586MMX || X86_GENERIC || MK8 || MK7 || MBARCELONA || MEFFICEON || MCORE2 || MCOREI7 || MCOREI7AVX || MCOREAVXI || MCOREAVX2    config X86_USE_PPRO_CHECKSUM  def_bool y -depends on MWINCHIP3D || MWINCHIPC6 || MCYRIXIII || MK7 || MK6 || MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M686 || MK8 || MVIAC3_2 || MVIAC7 || MEFFICEON || MGEODE_LX || MCORE2 || MATOM +depends on MWINCHIP3D || MWINCHIPC6 || MCYRIXIII || MK7 || MK6 || MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M686 || MK8 || MVIAC3_2 || MVIAC7 || MEFFICEON || MGEODE_LX || MCORE2 || MCOREI7 || MCOREI7AVX || MCOREAVXI || MCOREAVX2 || MATOM    config X86_USE_3DNOW  def_bool y @@ -395,17 +458,17 @@    config X86_TSC  def_bool y -depends on ((MWINCHIP3D || MCRUSOE || MEFFICEON || MCYRIXIII || MK7 || MK6 || MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M686 || M586MMX || M586TSC || MK8 || MVIAC3_2 || MVIAC7 || MGEODEGX1 || MGEODE_LX || MCORE2 || MATOM) && !X86_NUMAQ) || X86_64 +depends on ((MWINCHIP3D || MCRUSOE || MEFFICEON || MCYRIXIII || MK7 || MK6 || MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M686 || M586MMX || M586TSC || MK8 || MBARCELONA || MBOBCAT || MBULLDOZER || MPILEDRIVER || MVIAC3_2 || MVIAC7 || MGEODEGX1 || MGEODE_LX || MCORE2 || MCOREI7 || MCOREI7-AVX || MATOM) && !X86_NUMAQ) || X86_64    config X86_CMPXCHG64  def_bool y -depends on X86_PAE || X86_64 || MCORE2 || MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M686 || MATOM +depends on X86_PAE || X86_64 || MCORE2 || MCOREI7 || MCOREI7AVX || MCOREAVXI || MCOREAVX2 || MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M686 || MATOM    # this should be set for all -march=.. options where the compiler  # generates cmov.  config X86_CMOV  def_bool y -depends on (MK8 || MK7 || MCORE2 || MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M686 || MVIAC3_2 || MVIAC7 || MCRUSOE || MEFFICEON || X86_64 || MATOM || MGEODE_LX) +depends on (MK8 || MBARCELONA || MBOBCAT || MBULLDOZER || MPILEDRIVER || MK7 || MCORE2 || MCOREI7 || MCOREI7AVX || MCOREAVXI || MCOREAVX2 || MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M686 || MVIAC3_2 || MVIAC7 || MCRUSOE || MEFFICEON || X86_64 || MATOM || MGEODE_LX)    config X86_MINIMUM_CPU_FAMILY  int --- linux-3.6/arch/x86/Makefile2012-04-29 18:43:58.249336198 -0700 +++ linux-3.6.mod/arch/x86/Makefile2012-04-29 18:41:51.260932642 -0700 @@ -51,10 +51,22 @@            # FIXME - should be integrated in Makefile.cpu (Makefile_32.cpu)          cflags-$(CONFIG_MK8) += $(call cc-option,-march=k8) +        cflags-$(CONFIG_MBARCELONA) += $(call cc-option,-march=barcelona) +        cflags-$(CONFIG_MBOBCAT) += $(call cc-option,-march=btver1) +        cflags-$(CONFIG_MBULLDOZER) += $(call cc-option,-march=bdver1) +        cflags-$(CONFIG_MPILEDRIVER) += $(call cc-option,-march=bdver2)          cflags-$(CONFIG_MPSC) += $(call cc-option,-march=nocona)            cflags-$(CONFIG_MCORE2) += \ -                $(call cc-option,-march=core2,$(call cc-option,-mtune=generic)) +                $(call cc-option,-march=core2,$(call cc-option,-mtune=core2)) +        cflags-$(CONFIG_MCOREI7) += \ +                $(call cc-option,-march=corei7,$(call cc-option,-mtune=corei7)) +        cflags-$(CONFIG_MCOREI7AVX) += \ +                $(call cc-option,-march=corei7-avx,$(call cc-option,-mtune=corei7-avx)) +        cflags-$(CONFIG_MCOREAVXI) += \ +                $(call cc-option,-march=core-avx-i,$(call cc-option,-mtune=core-avx-i)) +        cflags-$(CONFIG_MCOREAVX2) += \ +                $(call cc-option,-march=core-avx2,$(call cc-option,-mtune=core-avx2))  cflags-$(CONFIG_MATOM) += $(call cc-option,-march=atom) \  $(call cc-option,-mtune=atom,$(call cc-option,-mtune=generic))          cflags-$(CONFIG_GENERIC_CPU) += $(call cc-option,-mtune=generic) --- linux-3.6/arch/x86/Makefile_32.cpu2012-04-29 18:43:58.269335977 -0700 +++ linux-3.6.mod/arch/x86/Makefile_32.cpu2012-04-29 18:42:39.120330975 -0700 @@ -25,6 +25,10 @@  # They make zero difference whatsosever to performance at this time.  cflags-$(CONFIG_MK7)+= -march=athlon  cflags-$(CONFIG_MK8)+= $(call cc-option,-march=k8,-march=athlon) +cflags-$(CONFIG_MBARCELONA)+= $(call cc-option,-march=barcelona,-march=athlon) +cflags-$(CONFIG_MBOBCAT)+= $(call cc-option,-march=btver1,-march=athlon) +cflags-$(CONFIG_MBULLDOZER)+= $(call cc-option,-march=bdver1,-march=athlon) +cflags-$(CONFIG_MPILEDRIVER)+= $(call cc-option,-march=bdver2,-march=athlon)  cflags-$(CONFIG_MCRUSOE)+= -march=i686 $(align)-functions=0 $(align)-jumps=0 $(align)-loops=0  cflags-$(CONFIG_MEFFICEON)+= -march=i686 $(call tune,pentium3) $(align)-functions=0 $(align)-jumps=0 $(align)-loops=0  cflags-$(CONFIG_MWINCHIPC6)+= $(call cc-option,-march=winchip-c6,-march=i586) @@ -33,6 +37,10 @@  cflags-$(CONFIG_MVIAC3_2)+= $(call cc-option,-march=c3-2,-march=i686)  cflags-$(CONFIG_MVIAC7)+= -march=i686  cflags-$(CONFIG_MCORE2)+= -march=i686 $(call tune,core2) +cflags-$(CONFIG_MCOREI7)+= -march=i686 $(call tune,corei7) +cflags-$(CONFIG_MCOREI7AVX)+= -march=i686 $(call tune,corei7-avx) +cflags-$(CONFIG_MCOREAVXI)+= -march=i686 $(call tune,core-avx-i) +cflags-$(CONFIG_MCOREAVX2)+= -march=i686 $(call tune,core-avx-2)  cflags-$(CONFIG_MATOM)+= $(call cc-option,-march=atom,$(call cc-option,-march=core2,-march=i686)) \  $(call cc-option,-mtune=atom,$(call cc-option,-mtune=generic))