Changes in Makefile.autofdo

c771600c6af14749609b49565ffb4cac2959710d - Merge drm/drm-next into drm-intel-gt-next

Wed, 05 Feb 2025 10:29:14 +0100

Merge drm/drm-next into drm-intel-gt-nextWe need4ba4f1afb6a9 ("perf: Generic hotplug support for a PMU with a scope")in order to land a i915 PMU simplification and a fix. That landed in 6.12and we are stuck at 6.9 so lets bump things forward.Signed-off-by: Tvrtko Ursulin List of files: /linux/scripts/Makefile.autofdo

60675d4ca1ef0857e44eba5849b74a3a998d0c0f - Merge branch 'linus' into x86/mm, to pick up fixes

Fri, 20 Dec 2024 10:25:44 +0100

Merge branch 'linus' into x86/mm, to pick up fixesSigned-off-by: Ingo Molnar List of files: /linux/scripts/Makefile.autofdo

25768de50b1f2dbb6ea44bd5148a87fe2c9c3688 - Merge branch 'next' into for-linus

Tue, 21 Jan 2025 06:37:39 +0100

Merge branch 'next' into for-linusPrepare input updates for 6.14 merge window. List of files: /linux/scripts/Makefile.autofdo

670af65d2ab4a6a9bb72f014b080757e291ad3fe - Merge branch 'for-6.14/constify-bin-attribute' into for-linus

Mon, 20 Jan 2025 09:58:12 +0100

Merge branch 'for-6.14/constify-bin-attribute' into for-linus- constification of 'struct bin_attribute' in various HID driver (Thomas Weißschuh) List of files: /linux/scripts/Makefile.autofdo

6d4a0f4ea72319c9a37c1a7191695467006dd272 - Merge tag 'v6.13-rc3' into next

Tue, 17 Dec 2024 18:40:45 +0100

Merge tag 'v6.13-rc3' into nextSync up with the mainline. List of files: /linux/scripts/Makefile.autofdo

302cc446cbd92aadff72a647cebc13d5634f8342 - Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net

Thu, 05 Dec 2024 20:48:58 +0100

Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/netCross-merge networking fixes after downstream PR (net-6.13-rc2).No conflicts or adjacent changes.Signed-off-by: Jakub Kicinski List of files: /linux/scripts/Makefile.autofdo

c5fb51b71788926feef0d07f30c8af1d5e4af1a6 - Merge remote-tracking branch 'pm/opp/linux-next' into HEAD

Fri, 03 Jan 2025 16:13:45 +0100

Merge remote-tracking branch 'pm/opp/linux-next' into HEADMerge pm/opp tree to get dev_pm_opp_get_bw()Signed-off-by: Rob Clark List of files: /linux/scripts/Makefile.autofdo

e7f0a3a6f7339af55f1ca2c27131739d75569c08 - Merge drm/drm-next into drm-intel-next

Wed, 11 Dec 2024 21:06:05 +0100

Merge drm/drm-next into drm-intel-nextCatching up with 6.13-rc2.Signed-off-by: Rodrigo Vivi List of files: /linux/scripts/Makefile.autofdo

8f109f287fdc7b8fc7dcb6b2190c8b17dc22fcda - Merge drm/drm-next into drm-xe-next

Mon, 02 Dec 2024 17:22:11 +0100

Merge drm/drm-next into drm-xe-nextA backmerge to get the PMT preparation work formerging the BMG PMT support.Signed-off-by: Rodrigo Vivi List of files: /linux/scripts/Makefile.autofdo

3aba2eba84e0219fb66061359052be81bd883d53 - Merge drm/drm-next into drm-misc-next

Mon, 02 Dec 2024 12:44:18 +0100

Merge drm/drm-next into drm-misc-nextKickstart 6.14 cycle.Signed-off-by: Maxime Ripard List of files: /linux/scripts/Makefile.autofdo

bcfd5f644c5b933cfb3c488220e40a03e011e8a4 - Merge tag 'v6.13-rc1' into perf/core, to refresh the branch

Mon, 02 Dec 2024 11:52:59 +0100

Merge tag 'v6.13-rc1' into perf/core, to refresh the branchSigned-off-by: Ingo Molnar List of files: /linux/scripts/Makefile.autofdo

c34e9ab9a612ee8b18273398ef75c207b01f516d - Merge tag 'asoc-fix-v6.13-rc1' of https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-linus

Thu, 05 Dec 2024 18:09:29 +0100

Merge tag 'asoc-fix-v6.13-rc1' of https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-linusASoC: Fixes for v6.13A few small fixes for v6.13, all system specific - the biggest thing isthe fix for jack handling over suspend on some Intel laptops. List of files: /linux/scripts/Makefile.autofdo

6a34dfa15d6edf7e78b8118d862d2db0889cf669 - Merge tag 'kbuild-v6.13' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild

Sat, 30 Nov 2024 22:41:50 +0100

Merge tag 'kbuild-v6.13' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuildPull Kbuild updates from Masahiro Yamada: - Add generic support for built-in boot DTB files - Enable TAB cycling for dialog buttons in nconfig - Fix issues in streamline_config.pl - Refactor Kconfig - Add support for Clang's AutoFDO (Automatic Feedback-Directed Optimization) - Add support for Clang's Propeller, a profile-guided optimization. - Change the working directory to the external module directory for M= builds - Support building external modules in a separate output directory - Enable objtool for *.mod.o and additional kernel objects - Use lz4 instead of deprecated lz4c - Work around a performance issue with "git describe" - Refactor modpost* tag 'kbuild-v6.13' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: (85 commits) kbuild: rename .tmp_vmlinux.kallsyms0.syms to .tmp_vmlinux0.syms gitignore: Don't ignore 'tags' directory kbuild: add dependency from vmlinux to resolve_btfids modpost: replace tdb_hash() with hash_str() kbuild: deb-pkg: add python3:native to build dependency genksyms: reduce indentation in export_symbol() modpost: improve error messages in device_id_check() modpost: rename alias symbol for MODULE_DEVICE_TABLE() modpost: rename variables in handle_moddevtable() modpost: move strstarts() to modpost.h modpost: convert do_usb_table() to a generic handler modpost: convert do_of_table() to a generic handler modpost: convert do_pnp_device_entry() to a generic handler modpost: convert do_pnp_card_entries() to a generic handler modpost: call module_alias_printf() from all do_*_entry() functions modpost: pass (struct module *) to do_*_entry() functions modpost: remove DEF_FIELD_ADDR_VAR() macro modpost: deduplicate MODULE_ALIAS() for all drivers modpost: introduce module_alias_printf() helper modpost: remove unnecessary check in do_acpi_entry() ... List of files: /linux/scripts/Makefile.autofdo

2fd65f7afd5a73b685a1651cb651ade120b53e15 - AutoFDO: Enable machine function split optimization for AutoFDO

Sat, 02 Nov 2024 18:51:13 +0100

AutoFDO: Enable machine function split optimization for AutoFDOEnable the machine function split optimization for AutoFDO in Clang.Machine function split (MFS) is a pass in the Clang compiler thatsplits a function into hot and cold parts. The linker groups allcold blocks across functions together. This decreases hot codefragmentation and improves iCache and iTLB utilization.MFS requires a profile so this is enabled only for the AutoFDO builds.Co-developed-by: Han Shen Signed-off-by: Han Shen Signed-off-by: Rong Xu Suggested-by: Sriraman Tallam Suggested-by: Krzysztof Pszeniczny Tested-by: Yonghong Song Tested-by: Yabin Cui Tested-by: Nathan Chancellor Reviewed-by: Kees Cook Signed-off-by: Masahiro Yamada List of files: /linux/scripts/Makefile.autofdo

0847420f5e499a7ab518942fff71482179290163 - AutoFDO: Enable -ffunction-sections for the AutoFDO build

Sat, 02 Nov 2024 18:51:12 +0100

AutoFDO: Enable -ffunction-sections for the AutoFDO buildEnable -ffunction-sections by default for the AutoFDO build.With -ffunction-sections, the compiler places each function in its ownsection named .text.function_name instead of placing all functions inthe .text section. In the AutoFDO build, this allows the linker toutilize profile information to reorganize functions for improvedutilization of iCache and iTLB.Co-developed-by: Han Shen Signed-off-by: Han Shen Signed-off-by: Rong Xu Suggested-by: Sriraman Tallam Tested-by: Yonghong Song Tested-by: Yabin Cui Tested-by: Nathan Chancellor Reviewed-by: Kees Cook Signed-off-by: Masahiro Yamada List of files: /linux/scripts/Makefile.autofdo

315ad8780a129e82e2c5c65ee6e970d91a577acb - kbuild: Add AutoFDO support for Clang build

Sat, 02 Nov 2024 18:51:08 +0100

kbuild: Add AutoFDO support for Clang buildAdd the build support for using Clang's AutoFDO. Building the kernelwith AutoFDO does not reduce the optimization level from thecompiler. AutoFDO uses hardware sampling to gather information aboutthe frequency of execution of different code paths within a binary.This information is then used to guide the compiler's optimizationdecisions, resulting in a more efficient binary. Experimentsshowed that the kernel can improve up to 10% in latency.The support requires a Clang compiler after LLVM 17. This submissionis limited to x86 platforms that support PMU features like LBR onIntel machines and AMD Zen3 BRS. Support for SPE on ARM 1, and BRBE on ARM 1 is part of planned future work.Here is an example workflow for AutoFDO kernel:1) Build the kernel on the host machine with LLVM enabled, for example, $ make menuconfig LLVM=1 Turn on AutoFDO build config: CONFIG_AUTOFDO_CLANG=y With a configuration that has LLVM enabled, use the following command: scripts/config -e AUTOFDO_CLANG After getting the config, build with $ make LLVM=12) Install the kernel on the test machine.3) Run the load tests. The '-c' option in perf specifies the sample event period. We suggest using a suitable prime number, like 500009, for this purpose. For Intel platforms: $ perf record -e BR_INST_RETIRED.NEAR_TAKEN:k -a -N -b -c \ -o -- For AMD platforms: The supported system are: Zen3 with BRS, or Zen4 with amd_lbr_v2 For Zen3: $ cat proc/cpuinfo | grep " brs" For Zen4: $ cat proc/cpuinfo | grep amd_lbr_v2 $ perf record --pfm-events RETIRED_TAKEN_BRANCH_INSTRUCTIONS:k -a \ -N -b -c -o -- 4) (Optional) Download the raw perf file to the host machine.5) To generate an AutoFDO profile, two offline tools are available: create_llvm_prof and llvm_profgen. The create_llvm_prof tool is part of the AutoFDO project and can be found on GitHub (https://github.com/google/autofdo), version v0.30.1 or later. The llvm_profgen tool is included in the LLVM compiler itself. It's important to note that the version of llvm_profgen doesn't need to match the version of Clang. It needs to be the LLVM 19 release or later, or from the LLVM trunk. $ llvm-profgen --kernel --binary= --perfdata= \ -o or $ create_llvm_prof --binary= --profile= \ --format=extbinary --out= Note that multiple AutoFDO profile files can be merged into one via: $ llvm-profdata merge -o ... 6) Rebuild the kernel using the AutoFDO profile file with the same config as step 1, (Note CONFIG_AUTOFDO_CLANG needs to be enabled): $ make LLVM=1 CLANG_AUTOFDO_PROFILE=Co-developed-by: Han Shen Signed-off-by: Han Shen Signed-off-by: Rong Xu Suggested-by: Sriraman Tallam Suggested-by: Krzysztof Pszeniczny Suggested-by: Nick Desaulniers Suggested-by: Stephane Eranian Tested-by: Yonghong Song Tested-by: Yabin Cui Tested-by: Nathan Chancellor Reviewed-by: Kees Cook Tested-by: Peter Jung Signed-off-by: Masahiro Yamada List of files: /linux/scripts/Makefile.autofdo