deepin: x86: Merge 'graysky2/kernel_compiler_patch' to add additional… #412
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… optimization/tuning for kernel builds
Origin commit msg:
--------------------
FEATURES
This patch adds additional CPU options to the Linux kernel accessible under:
Processor type and features --->
Processor family --->
With the release of gcc 11.1 and clang 12.0, several generic 64-bit levels are
offered which are good for supported Intel or AMD CPUs:
• x86-64-v2
• x86-64-v3
• x86-64-v4
Users of glibc 2.33 and above can see which level is supported by running:
/lib/ld-linux-x86-64.so.2 --help | grep supported
Or
/lib64/ld-linux-x86-64.so.2 --help | grep supported
Alternatively, compare the flags from /proc/cpuinfo to this list.[1]
CPU-specific microarchitectures include:
• AMD Improved K8-family
• AMD K10-family
• AMD Family 10h (Barcelona)
• AMD Family 14h (Bobcat)
• AMD Family 16h (Jaguar)
• AMD Family 15h (Bulldozer)
• AMD Family 15h (Piledriver)
• AMD Family 15h (Steamroller)
• AMD Family 15h (Excavator)
• AMD Family 17h (Zen)
• AMD Family 17h (Zen 2)
• AMD Family 19h (Zen 3)**
• AMD Family 19h (Zen 4)‡
• AMD Family 1Ah (Zen 5)§
• Intel Silvermont low-power processors
• Intel Goldmont low-power processors (Apollo Lake and Denverton)
• Intel Goldmont Plus low-power processors (Gemini Lake)
• Intel 1st Gen Core i3/i5/i7 (Nehalem)
• Intel 1.5 Gen Core i3/i5/i7 (Westmere)
• Intel 2nd Gen Core i3/i5/i7 (Sandybridge)
• Intel 3rd Gen Core i3/i5/i7 (Ivybridge)
• Intel 4th Gen Core i3/i5/i7 (Haswell)
• Intel 5th Gen Core i3/i5/i7 (Broadwell)
• Intel 6th Gen Core i3/i5/i7 (Skylake)
• Intel 6th Gen Core i7/i9 (Skylake X)
• Intel 8th Gen Core i3/i5/i7 (Cannon Lake)
• Intel 10th Gen Core i7/i9 (Ice Lake)
• Intel Xeon (Cascade Lake)
• Intel Xeon (Cooper Lake)*
• Intel 3rd Gen 10nm++ i3/i5/i7/i9-family (Tiger Lake)*
• Intel 4th Gen 10nm++ Xeon (Sapphire Rapids)†
• Intel 11th Gen i3/i5/i7/i9-family (Rocket Lake)†
• Intel 12th Gen i3/i5/i7/i9-family (Alder Lake)†
• Intel 13th Gen i3/i5/i7/i9-family (Raptor Lake)‡
• Intel 14th Gen i3/i5/i7/i9-family (Meteor Lake)‡
• Intel 5th Gen 10nm++ Xeon (Emerald Rapids)‡
Notes: If not otherwise noted, gcc >=9.1 is required for support.
*Requires gcc >=10.1 or clang >=10.0
**Required gcc >=10.3 or clang >=12.0
†Required gcc >=11.1 or clang >=12.0
‡Required gcc >=13.0 or clang >=15.0.5
§Required gcc >=14.1 or clang >=19.0?
It also offers to compile passing the 'native' option which, "selects the CPU
to generate code for at compilation time by determining the processor type of
the compiling machine. Using -march=native enables all instruction subsets
supported by the local machine and will produce code optimized for the local
machine under the constraints of the selected instruction set."[2]
Users of Intel CPUs should select the 'Intel-Native' option and users of AMD
CPUs should select the 'AMD-Native' option.
MINOR NOTES RELATING TO INTEL ATOM PROCESSORS
This patch also changes -march=atom to -march=bonnell in accordance with the
gcc v4.9 changes. Upstream is using the deprecated -match=atom flags when I
believe it should use the newer -march=bonnell flag for atom processors.[3]
It is not recommended to compile on Atom-CPUs with the 'native' option.[4] The
recommendation is to use the 'atom' option instead.
BENEFITS
Small but real speed increases are measurable using a make endpoint comparing
a generic kernel to one built with one of the respective microarchs.
See the following experimental evidence supporting this statement:
https://github.com/graysky2/kernel_gcc_patch
REQUIREMENTS
linux version 5.17+
gcc version >=9.0 or clang version >=9.0
ACKNOWLEDGMENTS
This patch builds on the seminal work by Jeroen.[5]
REFERENCES
1. https://gitlab.com/x86-psABIs/x86-64-ABI/-/commit/77566eb03bc6a326811cb7e9
2. https://gcc.gnu.org/onlinedocs/gcc/x86-Options.html#index-x86-Options
3. https://bugzilla.kernel.org/show_bug.cgi?id=77461
4. https://github.com/graysky2/kernel_gcc_patch/issues/15
5. http://www.linuxforge.net/docs/linux/linux-gcc.php
--------------------
patch-version: more-uarches-for-kernel-6.8-rc4+.patch
Link: https://github.com/graysky2/kernel_compiler_patch
Signed-off-by: graysky <therealgraysky@proton.me>
Signed-off-by: WangYuli <wangyuli@uniontech.com>
|
[APPROVALNOTIFIER] This PR is NOT APPROVED This pull-request has been approved by: The full list of commands accepted by this bot can be found here.
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deepin pr auto reviewAdd support for AMD CPUs in x86_64 git-svn-id: 756ef344af921d95d562d9e9f9389127a89a6314@240482 91177308-0d34-0410-b5e6-96231b3b80d8 |
Avenger-285714
merged commit 628b05f
into
deepin-community:linux-6.6.y
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… optimization/tuning for kernel builds
Origin commit msg:
FEATURES
This patch adds additional CPU options to the Linux kernel accessible under:
Processor type and features --->
Processor family --->
With the release of gcc 11.1 and clang 12.0, several generic 64-bit levels are offered which are good for supported Intel or AMD CPUs: • x86-64-v2
• x86-64-v3
• x86-64-v4
Users of glibc 2.33 and above can see which level is supported by running:
/lib/ld-linux-x86-64.so.2 --help | grep supported
Or
/lib64/ld-linux-x86-64.so.2 --help | grep supported
Alternatively, compare the flags from /proc/cpuinfo to this list.[1]
CPU-specific microarchitectures include:
• AMD Improved K8-family
• AMD K10-family
• AMD Family 10h (Barcelona)
• AMD Family 14h (Bobcat)
• AMD Family 16h (Jaguar)
• AMD Family 15h (Bulldozer)
• AMD Family 15h (Piledriver)
• AMD Family 15h (Steamroller)
• AMD Family 15h (Excavator)
• AMD Family 17h (Zen)
• AMD Family 17h (Zen 2)
• AMD Family 19h (Zen 3)**
• AMD Family 19h (Zen 4)‡
• AMD Family 1Ah (Zen 5)§
• Intel Silvermont low-power processors
• Intel Goldmont low-power processors (Apollo Lake and Denverton) • Intel Goldmont Plus low-power processors (Gemini Lake) • Intel 1st Gen Core i3/i5/i7 (Nehalem)
• Intel 1.5 Gen Core i3/i5/i7 (Westmere)
• Intel 2nd Gen Core i3/i5/i7 (Sandybridge)
• Intel 3rd Gen Core i3/i5/i7 (Ivybridge)
• Intel 4th Gen Core i3/i5/i7 (Haswell)
• Intel 5th Gen Core i3/i5/i7 (Broadwell)
• Intel 6th Gen Core i3/i5/i7 (Skylake)
• Intel 6th Gen Core i7/i9 (Skylake X)
• Intel 8th Gen Core i3/i5/i7 (Cannon Lake)
• Intel 10th Gen Core i7/i9 (Ice Lake)
• Intel Xeon (Cascade Lake)
• Intel Xeon (Cooper Lake)*
• Intel 3rd Gen 10nm++ i3/i5/i7/i9-family (Tiger Lake)* • Intel 4th Gen 10nm++ Xeon (Sapphire Rapids)†
• Intel 11th Gen i3/i5/i7/i9-family (Rocket Lake)† • Intel 12th Gen i3/i5/i7/i9-family (Alder Lake)†
• Intel 13th Gen i3/i5/i7/i9-family (Raptor Lake)‡ • Intel 14th Gen i3/i5/i7/i9-family (Meteor Lake)‡ • Intel 5th Gen 10nm++ Xeon (Emerald Rapids)‡
Notes: If not otherwise noted, gcc >=9.1 is required for support.
*Requires gcc >=10.1 or clang >=10.0
**Required gcc >=10.3 or clang >=12.0
†Required gcc >=11.1 or clang >=12.0
‡Required gcc >=13.0 or clang >=15.0.5
§Required gcc >=14.1 or clang >=19.0?
It also offers to compile passing the 'native' option which, "selects the CPU to generate code for at compilation time by determining the processor type of the compiling machine. Using -march=native enables all instruction subsets supported by the local machine and will produce code optimized for the local machine under the constraints of the selected instruction set."[2]
Users of Intel CPUs should select the 'Intel-Native' option and users of AMD CPUs should select the 'AMD-Native' option.
MINOR NOTES RELATING TO INTEL ATOM PROCESSORS
This patch also changes -march=atom to -march=bonnell in accordance with the gcc v4.9 changes. Upstream is using the deprecated -match=atom flags when I believe it should use the newer -march=bonnell flag for atom processors.[3]
It is not recommended to compile on Atom-CPUs with the 'native' option.[4] The recommendation is to use the 'atom' option instead.
BENEFITS
Small but real speed increases are measurable using a make endpoint comparing a generic kernel to one built with one of the respective microarchs.
See the following experimental evidence supporting this statement: https://github.com/graysky2/kernel_gcc_patch
REQUIREMENTS
linux version 5.17+
gcc version >=9.0 or clang version >=9.0
ACKNOWLEDGMENTS
This patch builds on the seminal work by Jeroen.[5]
REFERENCES
patch-version: more-uarches-for-kernel-6.8-rc4+.patch
Link: https://github.com/graysky2/kernel_compiler_patch