user/sven/linux.git/Makefile, branch v5.15.166

Linux 5.15.166

2024-09-04T11:23:42Z

Link: https://lore.kernel.org/r/20240901160823.230213148@linuxfoundation.org Tested-by: Harshit Mogalapalli Tested-by: Florian Fainelli Tested-by: Ron Economos Tested-by: Jon Hunter Tested-by: Mark Brown Signed-off-by: Greg Kroah-Hartman

Linux 5.15.165

2024-08-19T03:45:52Z

Link: https://lore.kernel.org/r/20240815131941.255804951@linuxfoundation.org Tested-by: Florian Fainelli Link: https://lore.kernel.org/r/20240816101524.478149768@linuxfoundation.org Tested-by: Mark Brown Tested-by: Jon Hunter Tested-by: Ron Economos Tested-by: Florian Fainelli Link: https://lore.kernel.org/r/20240817075228.220424500@linuxfoundation.org Tested-by: Jon Hunter Tested-by: Harshit Mogalapalli Signed-off-by: Greg Kroah-Hartman

Linux 5.15.164

2024-07-27T08:46:18Z

Link: https://lore.kernel.org/r/20240725142738.422724252@linuxfoundation.org Tested-by: ChromeOS CQ Test Tested-by: SeongJae Park Tested-by: Shuah Khan Link: https://lore.kernel.org/r/20240726070557.506802053@linuxfoundation.org Tested-by: Ron Economos Tested-by: kernelci.org bot Tested-by: ChromeOS CQ Test Tested-by: Mark Brown Tested-by: Jon Hunter Tested-by: Linux Kernel Functional Testing Tested-by: Florian Fainelli Tested-by: Pavel Machek (CIP) Signed-off-by: Greg Kroah-Hartman

Linux 5.15.163

2024-07-18T11:07:45Z

Link: https://lore.kernel.org/r/20240716152752.524497140@linuxfoundation.org Tested-by: Florian Fainelli Tested-by: SeongJae Park Tested-by: Mark Brown Tested-by: Shuah Khan Tested-by: Allen Pais Link: https://lore.kernel.org/r/20240717063804.076815489@linuxfoundation.org Tested-by: Mark Brown Tested-by: Ron Economos Tested-by: Linux Kernel Functional Testing Tested-by: Kelsey Steele Tested-by: Florian Fainelli Tested-by: Jon Hunter Signed-off-by: Greg Kroah-Hartman

Linux 5.15.162

2024-07-05T07:14:52Z

Link: https://lore.kernel.org/r/20240703102913.093882413@linuxfoundation.org Tested-by: Jon Hunter Tested-by: Harshit Mogalapalli Tested-by: Mark Brown Tested-by: Kelsey Steele Tested-by: Shuah Khan Tested-by: Linux Kernel Functional Testing Tested-by: Florian Fainelli Tested-by: Ron Economos Signed-off-by: Greg Kroah-Hartman

kbuild: Remove support for Clang's ThinLTO caching

2024-07-05T07:14:23Z

commit aba091547ef6159d52471f42a3ef531b7b660ed8 upstream. There is an issue in clang's ThinLTO caching (enabled for the kernel via '--thinlto-cache-dir') with .incbin, which the kernel occasionally uses to include data within the kernel, such as the .config file for /proc/config.gz. For example, when changing the .config and rebuilding vmlinux, the copy of .config in vmlinux does not match the copy of .config in the build folder: $ echo 'CONFIG_LTO_NONE=n CONFIG_LTO_CLANG_THIN=y CONFIG_IKCONFIG=y CONFIG_HEADERS_INSTALL=y' >kernel/configs/repro.config $ make -skj"$(nproc)" ARCH=x86_64 LLVM=1 clean defconfig repro.config vmlinux ... $ grep CONFIG_HEADERS_INSTALL .config CONFIG_HEADERS_INSTALL=y $ scripts/extract-ikconfig vmlinux | grep CONFIG_HEADERS_INSTALL CONFIG_HEADERS_INSTALL=y $ scripts/config -d HEADERS_INSTALL $ make -kj"$(nproc)" ARCH=x86_64 LLVM=1 vmlinux ... UPD kernel/config_data GZIP kernel/config_data.gz CC kernel/configs.o ... LD vmlinux ... $ grep CONFIG_HEADERS_INSTALL .config # CONFIG_HEADERS_INSTALL is not set $ scripts/extract-ikconfig vmlinux | grep CONFIG_HEADERS_INSTALL CONFIG_HEADERS_INSTALL=y Without '--thinlto-cache-dir' or when using full LTO, this issue does not occur. Benchmarking incremental builds on a few different machines with and without the cache shows a 20% increase in incremental build time without the cache when measured by touching init/main.c and running 'make all'. ARCH=arm64 defconfig + CONFIG_LTO_CLANG_THIN=y on an arm64 host: Benchmark 1: With ThinLTO cache Time (mean ± σ): 56.347 s ± 0.163 s [User: 83.768 s, System: 24.661 s] Range (min … max): 56.109 s … 56.594 s 10 runs Benchmark 2: Without ThinLTO cache Time (mean ± σ): 67.740 s ± 0.479 s [User: 718.458 s, System: 31.797 s] Range (min … max): 67.059 s … 68.556 s 10 runs Summary With ThinLTO cache ran 1.20 ± 0.01 times faster than Without ThinLTO cache ARCH=x86_64 defconfig + CONFIG_LTO_CLANG_THIN=y on an x86_64 host: Benchmark 1: With ThinLTO cache Time (mean ± σ): 85.772 s ± 0.252 s [User: 91.505 s, System: 8.408 s] Range (min … max): 85.447 s … 86.244 s 10 runs Benchmark 2: Without ThinLTO cache Time (mean ± σ): 103.833 s ± 0.288 s [User: 232.058 s, System: 8.569 s] Range (min … max): 103.286 s … 104.124 s 10 runs Summary With ThinLTO cache ran 1.21 ± 0.00 times faster than Without ThinLTO cache While it is unfortunate to take this performance improvement off the table, correctness is more important. If/when this is fixed in LLVM, it can potentially be brought back in a conditional manner. Alternatively, a developer can just disable LTO if doing incremental compiles quickly is important, as a full compile cycle can still take over a minute even with the cache and it is unlikely that LTO will result in functional differences for a kernel change. Cc: stable@vger.kernel.org Fixes: dc5723b02e52 ("kbuild: add support for Clang LTO") Reported-by: Yifan Hong Closes: https://github.com/ClangBuiltLinux/linux/issues/2021 Reported-by: Masami Hiramatsu Closes: https://lore.kernel.org/r/20220327115526.cc4b0ff55fc53c97683c3e4d@kernel.org/ Signed-off-by: Nathan Chancellor Signed-off-by: Masahiro Yamada [nathan: Address conflict in Makefile] Signed-off-by: Nathan Chancellor Signed-off-by: Greg Kroah-Hartman

Linux 5.15.161

2024-06-16T11:40:01Z

Link: https://lore.kernel.org/r/20240613113302.116811394@linuxfoundation.org Tested-by: SeongJae Park Tested-by: Ron Economos Tested-by: Mark Brown Tested-by: Jon Hunter Tested-by: Shuah Khan Tested-by: Linux Kernel Functional Testing Signed-off-by: Greg Kroah-Hartman

Linux 5.15.160

2024-05-25T14:20:19Z

Link: https://lore.kernel.org/r/20240523130327.956341021@linuxfoundation.org Tested-by: SeongJae Park Tested-by: Mark Brown Tested-by: Florian Fainelli Tested-by: Harshit Mogalapalli Tested-by: Linux Kernel Functional Testing Tested-by: Shuah Khan Tested-by: Ron Economos Tested-by: Kelsey Steele Signed-off-by: Greg Kroah-Hartman

Linux 5.15.159

2024-05-17T09:51:06Z

Link: https://lore.kernel.org/r/20240514101006.678521560@linuxfoundation.org Tested-by: Harshit Mogalapalli Tested-by: Florian Fainelli Tested-by: Shuah Khan Link: https://lore.kernel.org/r/20240515082414.316080594@linuxfoundation.org Tested-by: Mark Brown Tested-by: Ron Economos Tested-by: Allen Pais Tested-by: Jon Hunter Tested-by: Linux Kernel Functional Testing Tested-by: SeongJae Park Tested-by: Florian Fainelli Tested-by: kernelci.org bot Signed-off-by: Greg Kroah-Hartman

Linux 5.15.158

2024-05-02T14:24:50Z

Link: https://lore.kernel.org/r/20240430103043.397234724@linuxfoundation.org Tested-by: Harshit Mogalapalli Tested-by: SeongJae Park Tested-by: Florian Fainelli Tested-by: Ron Economos Tested-by: Linux Kernel Functional Testing Tested-by: Jon Hunter Tested-by: Shuah Khan Tested-by: Pascal Ernster Signed-off-by: Greg Kroah-Hartman