diff options
Diffstat (limited to 'arch/riscv/Kconfig')
| -rw-r--r-- | arch/riscv/Kconfig | 57 |
1 files changed, 56 insertions, 1 deletions
diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig index b549499eb363..bffbd869a068 100644 --- a/arch/riscv/Kconfig +++ b/arch/riscv/Kconfig @@ -53,6 +53,7 @@ config RISCV select ARCH_USE_MEMTEST select ARCH_USE_QUEUED_RWLOCKS select ARCH_USES_CFI_TRAPS if CFI_CLANG + select ARCH_WANT_BATCHED_UNMAP_TLB_FLUSH if SMP && MMU select ARCH_WANT_DEFAULT_TOPDOWN_MMAP_LAYOUT if MMU select ARCH_WANT_FRAME_POINTERS select ARCH_WANT_GENERAL_HUGETLB if !RISCV_ISA_SVNAPOT @@ -66,9 +67,10 @@ config RISCV select CLINT_TIMER if !MMU select CLONE_BACKWARDS select COMMON_CLK - select CPU_PM if CPU_IDLE || HIBERNATION + select CPU_PM if CPU_IDLE || HIBERNATION || SUSPEND select EDAC_SUPPORT select FRAME_POINTER if PERF_EVENTS || (FUNCTION_TRACER && !DYNAMIC_FTRACE) + select FTRACE_MCOUNT_USE_PATCHABLE_FUNCTION_ENTRY if DYNAMIC_FTRACE select GENERIC_ARCH_TOPOLOGY select GENERIC_ATOMIC64 if !64BIT select GENERIC_CLOCKEVENTS_BROADCAST if SMP @@ -115,6 +117,7 @@ config RISCV select HAVE_DEBUG_KMEMLEAK select HAVE_DMA_CONTIGUOUS if MMU select HAVE_DYNAMIC_FTRACE if !XIP_KERNEL && MMU && (CLANG_SUPPORTS_DYNAMIC_FTRACE || GCC_SUPPORTS_DYNAMIC_FTRACE) + select HAVE_DYNAMIC_FTRACE_WITH_DIRECT_CALLS select HAVE_DYNAMIC_FTRACE_WITH_REGS if HAVE_DYNAMIC_FTRACE select HAVE_FTRACE_MCOUNT_RECORD if !XIP_KERNEL select HAVE_FUNCTION_GRAPH_TRACER @@ -142,6 +145,8 @@ config RISCV select HAVE_REGS_AND_STACK_ACCESS_API select HAVE_RETHOOK if !XIP_KERNEL select HAVE_RSEQ + select HAVE_SAMPLE_FTRACE_DIRECT + select HAVE_SAMPLE_FTRACE_DIRECT_MULTI select HAVE_STACKPROTECTOR select HAVE_SYSCALL_TRACEPOINTS select HOTPLUG_CORE_SYNC_DEAD if HOTPLUG_CPU @@ -183,6 +188,20 @@ config HAVE_SHADOW_CALL_STACK # https://github.com/riscv-non-isa/riscv-elf-psabi-doc/commit/a484e843e6eeb51f0cb7b8819e50da6d2444d769 depends on $(ld-option,--no-relax-gp) +config RISCV_USE_LINKER_RELAXATION + def_bool y + # https://github.com/llvm/llvm-project/commit/6611d58f5bbcbec77262d392e2923e1d680f6985 + depends on !LD_IS_LLD || LLD_VERSION >= 150000 + +# https://github.com/llvm/llvm-project/commit/bbc0f99f3bc96f1db16f649fc21dd18e5b0918f6 +config ARCH_HAS_BROKEN_DWARF5 + def_bool y + depends on RISCV_USE_LINKER_RELAXATION + # https://github.com/llvm/llvm-project/commit/1df5ea29b43690b6622db2cad7b745607ca4de6a + depends on AS_IS_LLVM && AS_VERSION < 180000 + # https://github.com/llvm/llvm-project/commit/7ffabb61a5569444b5ac9322e22e5471cc5e4a77 + depends on LD_IS_LLD && LLD_VERSION < 180000 + config ARCH_MMAP_RND_BITS_MIN default 18 if 64BIT default 8 @@ -529,6 +548,28 @@ config RISCV_ISA_V_DEFAULT_ENABLE If you don't know what to do here, say Y. +config RISCV_ISA_V_UCOPY_THRESHOLD + int "Threshold size for vectorized user copies" + depends on RISCV_ISA_V + default 768 + help + Prefer using vectorized copy_to_user()/copy_from_user() when the + workload size exceeds this value. + +config RISCV_ISA_V_PREEMPTIVE + bool "Run kernel-mode Vector with kernel preemption" + depends on PREEMPTION + depends on RISCV_ISA_V + default y + help + Usually, in-kernel SIMD routines are run with preemption disabled. + Functions which envoke long running SIMD thus must yield core's + vector unit to prevent blocking other tasks for too long. + + This config allows kernel to run SIMD without explicitly disable + preemption. Enabling this config will result in higher memory + consumption due to the allocation of per-task's kernel Vector context. + config TOOLCHAIN_HAS_ZBB bool default y @@ -655,6 +696,20 @@ config RISCV_MISALIGNED load/store for both kernel and userspace. When disable, misaligned accesses will generate SIGBUS in userspace and panic in kernel. +config RISCV_EFFICIENT_UNALIGNED_ACCESS + bool "Assume the CPU supports fast unaligned memory accesses" + depends on NONPORTABLE + select DCACHE_WORD_ACCESS if MMU + select HAVE_EFFICIENT_UNALIGNED_ACCESS + help + Say Y here if you want the kernel to assume that the CPU supports + efficient unaligned memory accesses. When enabled, this option + improves the performance of the kernel on such CPUs. However, the + kernel will run much more slowly, or will not be able to run at all, + on CPUs that do not support efficient unaligned memory accesses. + + If unsure what to do here, say N. + endmenu # "Platform type" menu "Kernel features" |