Enable preemption in the linux kernel

since being able to measure processes concurrently is a requirement.

.config

@@ -130,13 +130,13 @@ CONFIG_TASK_IO_ACCOUNTING=y
 #
 # RCU Subsystem
 #
-CONFIG_TINY_RCU=y
+CONFIG_PREEMPT_RCU=y
 # CONFIG_RCU_EXPERT is not set
 CONFIG_SRCU=y
-CONFIG_TINY_SRCU=y
+CONFIG_TREE_SRCU=y
 # CONFIG_TASKS_RCU is not set
-# CONFIG_RCU_STALL_COMMON is not set
-# CONFIG_RCU_NEED_SEGCBLIST is not set
+CONFIG_RCU_STALL_COMMON=y
+CONFIG_RCU_NEED_SEGCBLIST=y
 # CONFIG_BUILD_BIN2C is not set
 # CONFIG_IKCONFIG is not set
 CONFIG_LOG_BUF_SHIFT=18
@@ -243,7 +243,6 @@ CONFIG_OPROFILE_NMI_TIMER=y
 CONFIG_KPROBES=y
 CONFIG_JUMP_LABEL=y
 # CONFIG_STATIC_KEYS_SELFTEST is not set
-CONFIG_OPTPROBES=y
 CONFIG_UPROBES=y
 # CONFIG_HAVE_64BIT_ALIGNED_ACCESS is not set
 CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS=y
@@ -391,11 +390,7 @@ CONFIG_DEFAULT_IOSCHED="cfq"
 CONFIG_MQ_IOSCHED_DEADLINE=y
 CONFIG_MQ_IOSCHED_KYBER=y
 # CONFIG_IOSCHED_BFQ is not set
-CONFIG_INLINE_SPIN_UNLOCK_IRQ=y
-CONFIG_INLINE_READ_UNLOCK=y
-CONFIG_INLINE_READ_UNLOCK_IRQ=y
-CONFIG_INLINE_WRITE_UNLOCK=y
-CONFIG_INLINE_WRITE_UNLOCK_IRQ=y
+CONFIG_UNINLINE_SPIN_UNLOCK=y
 CONFIG_ARCH_SUPPORTS_ATOMIC_RMW=y
 CONFIG_ARCH_USE_QUEUED_SPINLOCKS=y
 CONFIG_ARCH_USE_QUEUED_RWLOCKS=y
@@ -447,8 +442,9 @@ CONFIG_SWIOTLB=y
 CONFIG_IOMMU_HELPER=y
 CONFIG_NR_CPUS=1
 # CONFIG_PREEMPT_NONE is not set
-CONFIG_PREEMPT_VOLUNTARY=y
-# CONFIG_PREEMPT is not set
+# CONFIG_PREEMPT_VOLUNTARY is not set
+CONFIG_PREEMPT=y
+CONFIG_PREEMPT_COUNT=y
 CONFIG_UP_LATE_INIT=y
 CONFIG_X86_LOCAL_APIC=y
 CONFIG_X86_IO_APIC=y
@@ -3797,6 +3793,7 @@ CONFIG_SCHED_INFO=y
 CONFIG_SCHEDSTATS=y
 # CONFIG_SCHED_STACK_END_CHECK is not set
 # CONFIG_DEBUG_TIMEKEEPING is not set
+CONFIG_DEBUG_PREEMPT=y
 
 #
 # Lock Debugging (spinlocks, mutexes, etc...)
@@ -3829,6 +3826,7 @@ CONFIG_DEBUG_BUGVERBOSE=y
 # CONFIG_TORTURE_TEST is not set
 # CONFIG_RCU_PERF_TEST is not set
 # CONFIG_RCU_TORTURE_TEST is not set
+CONFIG_RCU_CPU_STALL_TIMEOUT=21
 CONFIG_RCU_TRACE=y
 # CONFIG_RCU_EQS_DEBUG is not set
 # CONFIG_DEBUG_WQ_FORCE_RR_CPU is not set
@@ -3856,6 +3854,7 @@ CONFIG_TRACING_SUPPORT=y
 CONFIG_FTRACE=y
 # CONFIG_FUNCTION_TRACER is not set
 # CONFIG_IRQSOFF_TRACER is not set
+# CONFIG_PREEMPT_TRACER is not set
 # CONFIG_SCHED_TRACER is not set
 # CONFIG_HWLAT_TRACER is not set
 # CONFIG_FTRACE_SYSCALLS is not set