linux-kernel - [PATCH 13/15] x86/kconfig/64: Enable popular scheduler, cgroups and namespaces options in the defconfig

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Message-ID: <20250506170924.3513161-14-mingo@kernel.org>
Date: Tue,  6 May 2025 19:09:22 +0200
From: Ingo Molnar <mingo@...nel.org>
To: linux-kernel@...r.kernel.org
Cc: "H . Peter Anvin" <hpa@...or.com>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Peter Zijlstra <peterz@...radead.org>,
	Borislav Petkov <bp@...en8.de>,
	Thomas Gleixner <tglx@...utronix.de>,
	Vitaly Kuznetsov <vkuznets@...hat.com>,
	Ingo Molnar <mingo@...nel.org>,
	Ard Biesheuvel <ardb@...nel.org>,
	Arnd Bergmann <arnd@...db.de>,
	David Woodhouse <dwmw@...zon.co.uk>,
	Masahiro Yamada <yamada.masahiro@...ionext.com>,
	Michal Marek <michal.lkml@...kovi.net>
Subject: [PATCH 13/15] x86/kconfig/64: Enable popular scheduler, cgroups and namespaces options in the defconfig

Since the x86 defconfig aims to be a distro kernel work-alike with
fewer drivers and a shorter build time, enable a handful of
popular scheduler and cgroups options that are typically enabled
on major Linux distributions.

The options enabled is a superset of the latest Ubuntu and Fedora
kernel debugging configs, using Ubuntu's config-6.11.0-24-generic
file, Fedora's kernel-x86_64-fedora.config and RHEL's
kernel-x86_64-rhel.config from kernel-ark.git.

Signed-off-by: Ingo Molnar <mingo@...nel.org>
Cc: Ard Biesheuvel <ardb@...nel.org>
Cc: Arnd Bergmann <arnd@...db.de>
Cc: David Woodhouse <dwmw@...zon.co.uk>
Cc: H. Peter Anvin <hpa@...or.com>
Cc: Linus Torvalds <torvalds@...ux-foundation.org>
Cc: Masahiro Yamada <yamada.masahiro@...ionext.com>
Cc: Michal Marek <michal.lkml@...kovi.net>
---
 arch/x86/configs/defconfig.x86_64 | 25 ++++++++++++++++++++++---
 1 file changed, 22 insertions(+), 3 deletions(-)

diff --git a/arch/x86/configs/defconfig.x86_64 b/arch/x86/configs/defconfig.x86_64
index 3c4a03633328..225aed921e21 100644
--- a/arch/x86/configs/defconfig.x86_64
+++ b/arch/x86/configs/defconfig.x86_64
@@ -2,6 +2,7 @@ CONFIG_WERROR=y
 CONFIG_SYSVIPC=y
 CONFIG_POSIX_MQUEUE=y
 CONFIG_AUDIT=y
+# CONFIG_CONTEXT_TRACKING_USER_FORCE is not set
 CONFIG_NO_HZ=y
 CONFIG_HIGH_RES_TIMERS=y
 CONFIG_BPF_SYSCALL=y
@@ -11,26 +12,45 @@ CONFIG_BPF_PRELOAD=y
 CONFIG_BPF_PRELOAD_UMD=y
 CONFIG_BPF_LSM=y
 CONFIG_PREEMPT_VOLUNTARY=y
+CONFIG_SCHED_CORE=y
+CONFIG_VIRT_CPU_ACCOUNTING_GEN=y
+CONFIG_IRQ_TIME_ACCOUNTING=y
 CONFIG_BSD_PROCESS_ACCT=y
+CONFIG_BSD_PROCESS_ACCT_V3=y
 CONFIG_TASKSTATS=y
 CONFIG_TASK_DELAY_ACCT=y
 CONFIG_TASK_XACCT=y
 CONFIG_TASK_IO_ACCOUNTING=y
+CONFIG_PSI=y
+CONFIG_PSI_DEFAULT_DISABLED=y
 CONFIG_LOG_BUF_SHIFT=18
-CONFIG_CGROUPS=y
+CONFIG_PRINTK_INDEX=y
+CONFIG_UCLAMP_TASK=y
+CONFIG_NUMA_BALANCING=y
+CONFIG_MEMCG=y
+CONFIG_MEMCG_V1=y
 CONFIG_BLK_CGROUP=y
-CONFIG_CGROUP_SCHED=y
+CONFIG_CFS_BANDWIDTH=y
+CONFIG_UCLAMP_TASK_GROUP=y
 CONFIG_CGROUP_PIDS=y
 CONFIG_CGROUP_RDMA=y
+CONFIG_CGROUP_DMEM=y
 CONFIG_CGROUP_FREEZER=y
 CONFIG_CGROUP_HUGETLB=y
 CONFIG_CPUSETS=y
+CONFIG_CPUSETS_V1=y
 CONFIG_CGROUP_DEVICE=y
 CONFIG_CGROUP_CPUACCT=y
 CONFIG_CGROUP_PERF=y
 CONFIG_CGROUP_BPF=y
 CONFIG_CGROUP_MISC=y
 CONFIG_CGROUP_DEBUG=y
+CONFIG_NAMESPACES=y
+CONFIG_USER_NS=y
+CONFIG_CHECKPOINT_RESTORE=y
+CONFIG_SCHED_AUTOGROUP=y
+CONFIG_SYSFS_SYSCALL=y
+CONFIG_EXPERT=y
 CONFIG_KALLSYMS_ALL=y
 CONFIG_PROFILING=y
 CONFIG_KEXEC=y
@@ -305,7 +325,6 @@ CONFIG_LIST_HARDENED=y
 CONFIG_PRINTK_TIME=y
 CONFIG_BOOT_PRINTK_DELAY=y
 CONFIG_DYNAMIC_DEBUG=y
-CONFIG_DEBUG_KERNEL=y
 CONFIG_STRIP_ASM_SYMS=y
 CONFIG_HEADERS_INSTALL=y
 CONFIG_DEBUG_SECTION_MISMATCH=y
-- 
2.45.2