Enable PREEMPT_RT

Signed-off-by: Mikhail Malyshev <[email protected]>

arch/x86/configs/eve_defconfig

@@ -1,6 +1,6 @@
 #
 # Automatically generated file; DO NOT EDIT.
-# Linux/x86 6.1.38 Kernel Configuration
+# Linux/x86_64 6.1.38 Kernel Configuration
 #
 CONFIG_CC_VERSION_TEXT="gcc (Ubuntu 11.4.0-1ubuntu1~22.04) 11.4.0"
 CONFIG_CC_IS_GCC=y
@@ -122,13 +122,14 @@ CONFIG_BPF_JIT_DEFAULT_ON=y
 # CONFIG_BPF_LSM is not set
 # end of BPF subsystem
 
-CONFIG_PREEMPT_BUILD=y
+CONFIG_HAVE_PREEMPT_LAZY=y
+CONFIG_PREEMPT_LAZY=y
 # CONFIG_PREEMPT_NONE is not set
-CONFIG_PREEMPT_VOLUNTARY=y
+# CONFIG_PREEMPT_VOLUNTARY is not set
 # CONFIG_PREEMPT is not set
+CONFIG_PREEMPT_RT=y
 CONFIG_PREEMPT_COUNT=y
 CONFIG_PREEMPTION=y
-CONFIG_PREEMPT_DYNAMIC=y
 # CONFIG_SCHED_CORE is not set
 
 #
@@ -162,6 +163,8 @@ CONFIG_TASKS_RUDE_RCU=y
 CONFIG_TASKS_TRACE_RCU=y
 CONFIG_RCU_STALL_COMMON=y
 CONFIG_RCU_NEED_SEGCBLIST=y
+CONFIG_RCU_BOOST=y
+CONFIG_RCU_BOOST_DELAY=500
 # end of RCU Subsystem
 
 CONFIG_IKCONFIG=y
@@ -247,6 +250,7 @@ CONFIG_SYSFS_SYSCALL=y
 CONFIG_FHANDLE=y
 CONFIG_POSIX_TIMERS=y
 CONFIG_PRINTK=y
+CONFIG_HAVE_ATOMIC_CONSOLE=y
 CONFIG_BUG=y
 CONFIG_ELF_CORE=y
 CONFIG_PCSPKR_PLATFORM=y
@@ -719,6 +723,7 @@ CONFIG_MMU_GATHER_TABLE_FREE=y
 CONFIG_MMU_GATHER_RCU_TABLE_FREE=y
 CONFIG_MMU_GATHER_MERGE_VMAS=y
 CONFIG_ARCH_HAVE_NMI_SAFE_CMPXCHG=y
+CONFIG_HAVE_ALIGNED_STRUCT_PAGE=y
 CONFIG_HAVE_CMPXCHG_LOCAL=y
 CONFIG_HAVE_CMPXCHG_DOUBLE=y
 CONFIG_ARCH_WANT_COMPAT_IPC_PARSE_VERSION=y
@@ -753,7 +758,6 @@ CONFIG_HAVE_MOD_ARCH_SPECIFIC=y
 CONFIG_MODULES_USE_ELF_RELA=y
 CONFIG_HAVE_IRQ_EXIT_ON_IRQ_STACK=y
 CONFIG_HAVE_SOFTIRQ_ON_OWN_STACK=y
-CONFIG_SOFTIRQ_ON_OWN_STACK=y
 CONFIG_ARCH_HAS_ELF_RANDOMIZE=y
 CONFIG_HAVE_ARCH_MMAP_RND_BITS=y
 CONFIG_HAVE_EXIT_THREAD=y
@@ -773,6 +777,7 @@ CONFIG_HAVE_RELIABLE_STACKTRACE=y
 CONFIG_OLD_SIGSUSPEND3=y
 CONFIG_COMPAT_OLD_SIGACTION=y
 CONFIG_COMPAT_32BIT_TIME=y
+CONFIG_ARCH_SUPPORTS_RT=y
 CONFIG_HAVE_ARCH_VMAP_STACK=y
 CONFIG_VMAP_STACK=y
 CONFIG_HAVE_ARCH_RANDOMIZE_KSTACK_OFFSET=y
@@ -896,15 +901,13 @@ CONFIG_MQ_IOSCHED_KYBER=y
 
 CONFIG_PREEMPT_NOTIFIERS=y
 CONFIG_ASN1=y
-CONFIG_UNINLINE_SPIN_UNLOCK=y
 CONFIG_ARCH_SUPPORTS_ATOMIC_RMW=y
 CONFIG_MUTEX_SPIN_ON_OWNER=y
 CONFIG_RWSEM_SPIN_ON_OWNER=y
 CONFIG_LOCK_SPIN_ON_OWNER=y
 CONFIG_ARCH_USE_QUEUED_SPINLOCKS=y
 CONFIG_QUEUED_SPINLOCKS=y
 CONFIG_ARCH_USE_QUEUED_RWLOCKS=y
-CONFIG_QUEUED_RWLOCKS=y
 CONFIG_ARCH_HAS_NON_OVERLAPPING_ADDRESS_SPACE=y
 CONFIG_ARCH_HAS_SYNC_CORE_BEFORE_USERMODE=y
 CONFIG_ARCH_HAS_SYSCALL_WRAPPER=y
@@ -930,12 +933,12 @@ CONFIG_COREDUMP=y
 #
 # SLAB allocator options
 #
-CONFIG_SLAB=y
-# CONFIG_SLUB is not set
-# CONFIG_SLOB is not set
+CONFIG_SLUB=y
 CONFIG_SLAB_MERGE_DEFAULT=y
 CONFIG_SLAB_FREELIST_RANDOM=y
 # CONFIG_SLAB_FREELIST_HARDENED is not set
+# CONFIG_SLUB_STATS is not set
+CONFIG_SLUB_CPU_PARTIAL=y
 # end of SLAB allocator options
 
 # CONFIG_SHUFFLE_PAGE_ALLOCATOR is not set
@@ -959,22 +962,17 @@ CONFIG_ARCH_ENABLE_SPLIT_PMD_PTLOCK=y
 CONFIG_MEMORY_BALLOON=y
 CONFIG_BALLOON_COMPACTION=y
 CONFIG_COMPACTION=y
-CONFIG_COMPACT_UNEVICTABLE_DEFAULT=1
+CONFIG_COMPACT_UNEVICTABLE_DEFAULT=0
 CONFIG_PAGE_REPORTING=y
 CONFIG_MIGRATION=y
 CONFIG_ARCH_ENABLE_HUGEPAGE_MIGRATION=y
-CONFIG_ARCH_ENABLE_THP_MIGRATION=y
 CONFIG_CONTIG_ALLOC=y
 CONFIG_PHYS_ADDR_T_64BIT=y
 CONFIG_MMU_NOTIFIER=y
 CONFIG_KSM=y
 CONFIG_DEFAULT_MMAP_MIN_ADDR=65536
 CONFIG_ARCH_WANT_GENERAL_HUGETLB=y
 CONFIG_ARCH_WANTS_THP_SWAP=y
-CONFIG_TRANSPARENT_HUGEPAGE=y
-CONFIG_TRANSPARENT_HUGEPAGE_ALWAYS=y
-# CONFIG_TRANSPARENT_HUGEPAGE_MADVISE is not set
-# CONFIG_READ_ONLY_THP_FOR_FS is not set
 CONFIG_NEED_PER_CPU_EMBED_FIRST_CHUNK=y
 CONFIG_NEED_PER_CPU_PAGE_FIRST_CHUNK=y
 CONFIG_HAVE_SETUP_PER_CPU_AREA=y
@@ -1608,7 +1606,6 @@ CONFIG_SOCK_RX_QUEUE_MAPPING=y
 CONFIG_XPS=y
 CONFIG_CGROUP_NET_PRIO=y
 CONFIG_CGROUP_NET_CLASSID=y
-CONFIG_NET_RX_BUSY_POLL=y
 CONFIG_BQL=y
 CONFIG_NET_FLOW_LIMIT=y
 
@@ -4296,6 +4293,7 @@ CONFIG_LEDS_CLASS=m
 # CONFIG_LEDS_LM3530 is not set
 # CONFIG_LEDS_LM3532 is not set
 # CONFIG_LEDS_LM3642 is not set
+# CONFIG_LEDS_SIEMENS_IPC127 is not set
 # CONFIG_LEDS_PCA9532 is not set
 CONFIG_LEDS_GPIO=m
 # CONFIG_LEDS_LP3944 is not set
@@ -4340,7 +4338,6 @@ CONFIG_LEDS_TRIGGER_ONESHOT=m
 # CONFIG_LEDS_TRIGGER_DISK is not set
 CONFIG_LEDS_TRIGGER_HEARTBEAT=m
 CONFIG_LEDS_TRIGGER_BACKLIGHT=m
-CONFIG_LEDS_TRIGGER_CPU=y
 # CONFIG_LEDS_TRIGGER_ACTIVITY is not set
 CONFIG_LEDS_TRIGGER_GPIO=m
 CONFIG_LEDS_TRIGGER_DEFAULT_ON=m
@@ -4688,6 +4685,7 @@ CONFIG_INTEL_SCU_IPC=y
 # CONFIG_INTEL_SCU_PLATFORM is not set
 # CONFIG_SIEMENS_SIMATIC_IPC is not set
 # CONFIG_WINMATE_FM07_KEYS is not set
+# CONFIG_OS_EM32X is not set
 CONFIG_P2SB=y
 CONFIG_HAVE_CLK=y
 CONFIG_HAVE_CLK_PREPARE=y
@@ -6124,7 +6122,6 @@ CONFIG_TEXTSEARCH_KMP=y
 CONFIG_TEXTSEARCH_BM=y
 CONFIG_TEXTSEARCH_FSM=y
 CONFIG_INTERVAL_TREE=y
-CONFIG_XARRAY_MULTI=y
 CONFIG_ASSOCIATIVE_ARRAY=y
 CONFIG_HAS_IOMEM=y
 CONFIG_HAS_IOPORT_MAP=y
@@ -6162,6 +6159,7 @@ CONFIG_ARCH_HAS_PMEM_API=y
 CONFIG_ARCH_HAS_UACCESS_FLUSHCACHE=y
 CONFIG_ARCH_HAS_COPY_MC=y
 CONFIG_ARCH_STACKWALK=y
+CONFIG_STACKDEPOT=y
 CONFIG_SBITMAP=y
 # end of Library routines
 
@@ -6254,7 +6252,8 @@ CONFIG_HAVE_KCSAN_COMPILER=y
 #
 CONFIG_PAGE_EXTENSION=y
 # CONFIG_DEBUG_PAGEALLOC is not set
-# CONFIG_DEBUG_SLAB is not set
+CONFIG_SLUB_DEBUG=y
+# CONFIG_SLUB_DEBUG_ON is not set
 # CONFIG_PAGE_OWNER is not set
 # CONFIG_PAGE_TABLE_CHECK is not set
 CONFIG_PAGE_POISONING=y
@@ -6320,7 +6319,7 @@ CONFIG_SCHED_INFO=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...)
@@ -6330,7 +6329,6 @@ CONFIG_LOCK_DEBUGGING_SUPPORT=y
 # CONFIG_LOCK_STAT is not set
 # CONFIG_DEBUG_RT_MUTEXES is not set
 # CONFIG_DEBUG_SPINLOCK is not set
-# CONFIG_DEBUG_MUTEXES is not set
 # CONFIG_DEBUG_WW_MUTEX_SLOWPATH is not set
 # CONFIG_DEBUG_RWSEMS is not set
 # CONFIG_DEBUG_LOCK_ALLOC is not set
@@ -6479,7 +6477,6 @@ CONFIG_X86_DEBUG_FPU=y
 # CONFIG_PUNIT_ATOM_DEBUG is not set
 CONFIG_UNWINDER_ORC=y
 # CONFIG_UNWINDER_FRAME_POINTER is not set
-# CONFIG_UNWINDER_GUESS is not set
 # end of x86 Debugging
 
 #