3. Feature status on mips architecture

Subsystem

Feature

Kconfig

Status

Description

core

cBPF-JIT

HAVE_CBPF_JIT

ok

arch supports cBPF JIT optimizations

core

eBPF-JIT

HAVE_EBPF_JIT

ok

arch supports eBPF JIT optimizations

core

generic-idle-thread

GENERIC_SMP_IDLE_THREAD

ok

arch makes use of the generic SMP idle thread facility

core

jump-labels

HAVE_ARCH_JUMP_LABEL

ok

arch supports live patched, high efficiency branches

core

tracehook

HAVE_ARCH_TRACEHOOK

ok

arch supports tracehook (ptrace) register handling APIs

debug

debug-vm-pgtable

ARCH_HAS_DEBUG_VM_PGTABLE

TODO

arch supports pgtable tests for semantics compliance

debug

gcov-profile-all

ARCH_HAS_GCOV_PROFILE_ALL

TODO

arch supports whole-kernel GCOV code coverage profiling

debug

KASAN

HAVE_ARCH_KASAN

TODO

arch supports the KASAN runtime memory checker

debug

kcov

ARCH_HAS_KCOV

ok

arch supports kcov for coverage-guided fuzzing

debug

kgdb

HAVE_ARCH_KGDB

ok

arch supports the kGDB kernel debugger

debug

kmemleak

HAVE_DEBUG_KMEMLEAK

ok

arch supports the kernel memory leak detector

debug

kprobes

HAVE_KPROBES

ok

arch supports live patched kernel probe

debug

kprobes-on-ftrace

HAVE_KPROBES_ON_FTRACE

TODO

arch supports combined kprobes and ftrace live patching

debug

kretprobes

HAVE_KRETPROBES

ok

arch supports kernel function-return probes

debug

optprobes

HAVE_OPTPROBES

TODO

arch supports live patched optprobes

debug

stackprotector

HAVE_STACKPROTECTOR

ok

arch supports compiler driven stack overflow protection

debug

uprobes

ARCH_SUPPORTS_UPROBES

ok

arch supports live patched user probes

debug

user-ret-profiler

HAVE_USER_RETURN_NOTIFIER

TODO

arch supports user-space return from system call profiler

io

dma-contiguous

HAVE_DMA_CONTIGUOUS

ok

arch supports the DMA CMA (continuous memory allocator)

locking

cmpxchg-local

HAVE_CMPXCHG_LOCAL

TODO

arch supports the this_cpu_cmpxchg() API

locking

lockdep

LOCKDEP_SUPPORT

ok

arch supports the runtime locking correctness debug facility

locking

queued-rwlocks

ARCH_USE_QUEUED_RWLOCKS

ok

arch supports queued rwlocks

locking

queued-spinlocks

ARCH_USE_QUEUED_SPINLOCKS

ok

arch supports queued spinlocks

perf

kprobes-event

HAVE_REGS_AND_STACK_ACCESS_API

ok

arch supports kprobes with perf events

perf

perf-regs

HAVE_PERF_REGS

TODO

arch supports perf events register access

perf

perf-stackdump

HAVE_PERF_USER_STACK_DUMP

TODO

arch supports perf events stack dumps

sched

membarrier-sync-core

ARCH_HAS_MEMBARRIER_SYNC_CORE

TODO

arch supports core serializing membarrier

sched

numa-balancing

ARCH_SUPPORTS_NUMA_BALANCING

TODO

arch supports NUMA balancing

seccomp

seccomp-filter

HAVE_ARCH_SECCOMP_FILTER

ok

arch supports seccomp filters

time

arch-tick-broadcast

ARCH_HAS_TICK_BROADCAST

ok

arch provides tick_broadcast()

time

clockevents

!LEGACY_TIMER_TICK

ok

arch support generic clock events

time

context-tracking

HAVE_CONTEXT_TRACKING

ok

arch supports context tracking for NO_HZ_FULL

time

irq-time-acct

HAVE_IRQ_TIME_ACCOUNTING

ok

arch supports precise IRQ time accounting

time

virt-cpuacct

HAVE_VIRT_CPU_ACCOUNTING

ok

arch supports precise virtual CPU time accounting

vm

batch-unmap-tlb-flush

ARCH_WANT_BATCHED_UNMAP_TLB_FLUSH

TODO

arch supports deferral of TLB flush until multiple pages are unmapped

vm

ELF-ASLR

ARCH_HAS_ELF_RANDOMIZE

ok

arch randomizes the stack, heap and binary images of ELF binaries

vm

huge-vmap

HAVE_ARCH_HUGE_VMAP

TODO

arch supports the ioremap_pud_enabled() and ioremap_pmd_enabled() VM APIs

vm

ioremap_prot

HAVE_IOREMAP_PROT

ok

arch has ioremap_prot()

vm

PG_uncached

ARCH_USES_PG_UNCACHED

TODO

arch supports the PG_uncached page flag

vm

pte_special

ARCH_HAS_PTE_SPECIAL

ok

arch supports the pte_special()/pte_mkspecial() VM APIs

vm

THP

HAVE_ARCH_TRANSPARENT_HUGEPAGE

ok

arch supports transparent hugepages