Disable debug preemption in x86_64 (#11792)

Performance improvement. In 6.1, the recommended default for DEBUG_PREEMPT was y. However, this led to performance hits and overhead due to frequent calls to __this_cpu_preempt_check(). The default was later changed in "[cc60039] lib/Kconfig.debug: do not enable DEBUG_PREEMPT by default". Therefore, go with new recommeded default to improve performance.
microsoft · Jan 21, 2025 · 99410cc · 99410cc
1 parent 9ea5b46
commit 99410cc
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diff --git a/SPECS-SIGNED/kernel-64k-signed/kernel-64k-signed.spec b/SPECS-SIGNED/kernel-64k-signed/kernel-64k-signed.spec
@@ -7,7 +7,7 @@
 Summary:        Signed Linux Kernel for %{buildarch} systems
 Name:           kernel-64k-signed-%{buildarch}
 Version:        6.6.64.2
-Release:        2%{?dist}
+Release:        3%{?dist}
 License:        GPLv2
 Vendor:         Microsoft Corporation
 Distribution:   Azure Linux
@@ -105,6 +105,9 @@ echo "initrd of kernel %{uname_r} removed" >&2
 %exclude /module_info.ld
 
 %changelog
+* Thu Jan 15 2025 Rachel Menge <[email protected]> - 6.6.64.2-3
+- Bump release to match kernel
+
 * Fri Jan 10 2025 Rachel Menge <[email protected]> - 6.6.64.2-2
 - Bump release to match kernel-64k
 

diff --git a/SPECS-SIGNED/kernel-signed/kernel-signed.spec b/SPECS-SIGNED/kernel-signed/kernel-signed.spec
@@ -10,7 +10,7 @@
 Summary:        Signed Linux Kernel for %{buildarch} systems
 Name:           kernel-signed-%{buildarch}
 Version:        6.6.64.2
-Release:        2%{?dist}
+Release:        3%{?dist}
 License:        GPLv2
 Vendor:         Microsoft Corporation
 Distribution:   Azure Linux
@@ -145,6 +145,9 @@ echo "initrd of kernel %{uname_r} removed" >&2
 %exclude /module_info.ld
 
 %changelog
+* Thu Jan 15 2025 Rachel Menge <[email protected]> - 6.6.64.2-3
+- Bump release to match kernel
+
 * Fri Jan 10 2025 Rachel Menge <[email protected]> - 6.6.64.2-2
 - Bump release to match kernel
 

diff --git a/SPECS-SIGNED/kernel-uki-signed/kernel-uki-signed.spec b/SPECS-SIGNED/kernel-uki-signed/kernel-uki-signed.spec
@@ -6,7 +6,7 @@
 Summary:        Signed Unified Kernel Image for %{buildarch} systems
 Name:           kernel-uki-signed-%{buildarch}
 Version:        6.6.64.2
-Release:        2%{?dist}
+Release:        3%{?dist}
 License:        GPLv2
 Vendor:         Microsoft Corporation
 Distribution:   Azure Linux
@@ -68,6 +68,9 @@ popd
 /boot/efi/EFI/Linux/vmlinuz-uki-%{kernelver}.efi
 
 %changelog
+* Thu Jan 15 2025 Rachel Menge <[email protected]> - 6.6.64.2-3
+- Bump release to match kernel
+
 * Fri Jan 10 2025 Rachel Menge <[email protected]> - 6.6.64.2-2
 - Bump release to match kernel
 

diff --git a/SPECS/kernel-64k/kernel-64k.spec b/SPECS/kernel-64k/kernel-64k.spec
@@ -25,7 +25,7 @@
 Summary:        Linux Kernel
 Name:           kernel-64k
 Version:        6.6.64.2
-Release:        2%{?dist}
+Release:        3%{?dist}
 License:        GPLv2
 Vendor:         Microsoft Corporation
 Distribution:   Azure Linux
@@ -370,6 +370,9 @@ echo "initrd of kernel %{uname_r} removed" >&2
 %{_sysconfdir}/bash_completion.d/bpftool
 
 %changelog
+* Thu Jan 15 2025 Rachel Menge <[email protected]> - 6.6.64.2-3
+- Bump release to match kernel
+
 * Fri Jan 10 2025 Rachel Menge <[email protected]> - 6.6.64.2-2
 - Bump release to match kernel
 

diff --git a/SPECS/kernel-headers/kernel-headers.spec b/SPECS/kernel-headers/kernel-headers.spec
@@ -14,7 +14,7 @@
 Summary:        Linux API header files
 Name:           kernel-headers
 Version:        6.6.64.2
-Release:        2%{?dist}
+Release:        3%{?dist}
 License:        GPLv2
 Vendor:         Microsoft Corporation
 Distribution:   Azure Linux
@@ -75,6 +75,9 @@ done
 %endif
 
 %changelog
+* Thu Jan 15 2025 Rachel Menge <[email protected]> - 6.6.64.2-3
+- Bump release to match kernel
+
 * Fri Jan 10 2025 Rachel Menge <[email protected]> - 6.6.64.2-2
 - Bump release to match kernel
 

diff --git a/SPECS/kernel/config b/SPECS/kernel/config
@@ -8049,7 +8049,7 @@ CONFIG_SCHEDSTATS=y
 # end of Scheduler Debugging
 
 # CONFIG_DEBUG_TIMEKEEPING is not set
-CONFIG_DEBUG_PREEMPT=y
+# CONFIG_DEBUG_PREEMPT is not set
 
 #
 # Lock Debugging (spinlocks, mutexes, etc...)

diff --git a/SPECS/kernel/kernel-uki.spec b/SPECS/kernel/kernel-uki.spec
@@ -13,7 +13,7 @@
 Summary:        Unified Kernel Image
 Name:           kernel-uki
 Version:        6.6.64.2
-Release:        2%{?dist}
+Release:        3%{?dist}
 License:        GPLv2
 Vendor:         Microsoft Corporation
 Distribution:   Azure Linux
@@ -70,6 +70,9 @@ cp %{buildroot}/boot/vmlinuz-uki-%{kernelver}.efi %{buildroot}/boot/efi/EFI/Linu
 /boot/efi/EFI/Linux/vmlinuz-uki-%{kernelver}.efi
 
 %changelog
+* Thu Jan 15 2025 Rachel Menge <[email protected]> - 6.6.64.2-3
+- Bump release to match kernel
+
 * Fri Jan 10 2025 Rachel Menge <[email protected]> - 6.6.64.2-2
 - Bump release to match kernel
 

diff --git a/SPECS/kernel/kernel.signatures.json b/SPECS/kernel/kernel.signatures.json
@@ -1,7 +1,7 @@
 {
   "Signatures": {
     "azurelinux-ca-20230216.pem": "d545401163c75878319f01470455e6bc18a5968e39dd964323225e3fe308849b",
-    "config": "d4cc7bd42d9791716b0065a61b50ac9319172fe10a71e2aec5307fe7f7382dca",
+    "config": "0cef3115393e9ad463e1a13eeefa920e7b3e3b97c9695cb75cc04556cd0a1bc2",
     "config_aarch64": "27a07a9652c8dcfff7edb3134372dd0f53a9a6c8ab9c3dc5bf580ee08410bd27",
     "cpupower": "d7518767bf2b1110d146a49c7d42e76b803f45eb8bd14d931aa6d0d346fae985",
     "cpupower.service": "b057fe9e5d0e8c36f485818286b80e3eba8ff66ff44797940e99b1fd5361bb98",

diff --git a/SPECS/kernel/kernel.spec b/SPECS/kernel/kernel.spec
@@ -30,7 +30,7 @@
 Summary:        Linux Kernel
 Name:           kernel
 Version:        6.6.64.2
-Release:        2%{?dist}
+Release:        3%{?dist}
 License:        GPLv2
 Vendor:         Microsoft Corporation
 Distribution:   Azure Linux
@@ -428,6 +428,9 @@ echo "initrd of kernel %{uname_r} removed" >&2
 %{_sysconfdir}/bash_completion.d/bpftool
 
 %changelog
+* Thu Jan 15 2025 Rachel Menge <[email protected]> - 6.6.64.2-3
+- Disable DEBUG_PREEMPT
+
 * Fri Jan 10 2025 Rachel Menge <[email protected]> - 6.6.64.2-2
 - Enable Intel VPU
 

diff --git a/toolkit/resources/manifests/package/pkggen_core_aarch64.txt b/toolkit/resources/manifests/package/pkggen_core_aarch64.txt
@@ -1,5 +1,5 @@
 filesystem-1.1-21.azl3.aarch64.rpm
-kernel-headers-6.6.64.2-2.azl3.noarch.rpm
+kernel-headers-6.6.64.2-3.azl3.noarch.rpm
 glibc-2.38-8.azl3.aarch64.rpm
 glibc-devel-2.38-8.azl3.aarch64.rpm
 glibc-i18n-2.38-8.azl3.aarch64.rpm

diff --git a/toolkit/resources/manifests/package/pkggen_core_x86_64.txt b/toolkit/resources/manifests/package/pkggen_core_x86_64.txt
@@ -1,5 +1,5 @@
 filesystem-1.1-21.azl3.x86_64.rpm
-kernel-headers-6.6.64.2-2.azl3.noarch.rpm
+kernel-headers-6.6.64.2-3.azl3.noarch.rpm
 glibc-2.38-8.azl3.x86_64.rpm
 glibc-devel-2.38-8.azl3.x86_64.rpm
 glibc-i18n-2.38-8.azl3.x86_64.rpm

diff --git a/toolkit/resources/manifests/package/toolchain_aarch64.txt b/toolkit/resources/manifests/package/toolchain_aarch64.txt
@@ -156,7 +156,7 @@ intltool-0.51.0-7.azl3.noarch.rpm
 itstool-2.0.7-1.azl3.noarch.rpm
 kbd-2.2.0-2.azl3.aarch64.rpm
 kbd-debuginfo-2.2.0-2.azl3.aarch64.rpm
-kernel-headers-6.6.64.2-2.azl3.noarch.rpm
+kernel-headers-6.6.64.2-3.azl3.noarch.rpm
 kmod-30-1.azl3.aarch64.rpm
 kmod-debuginfo-30-1.azl3.aarch64.rpm
 kmod-devel-30-1.azl3.aarch64.rpm

diff --git a/toolkit/resources/manifests/package/toolchain_x86_64.txt b/toolkit/resources/manifests/package/toolchain_x86_64.txt
@@ -163,8 +163,8 @@ intltool-0.51.0-7.azl3.noarch.rpm
 itstool-2.0.7-1.azl3.noarch.rpm
 kbd-2.2.0-2.azl3.x86_64.rpm
 kbd-debuginfo-2.2.0-2.azl3.x86_64.rpm
-kernel-cross-headers-6.6.64.2-2.azl3.noarch.rpm
-kernel-headers-6.6.64.2-2.azl3.noarch.rpm
+kernel-cross-headers-6.6.64.2-3.azl3.noarch.rpm
+kernel-headers-6.6.64.2-3.azl3.noarch.rpm
 kmod-30-1.azl3.x86_64.rpm
 kmod-debuginfo-30-1.azl3.x86_64.rpm
 kmod-devel-30-1.azl3.x86_64.rpm