[T106][ZXW-22]7520V3SCV2.01.01.02P42U09_VEC_V0.8_AP_VEC origin source commit
Change-Id: Ic6e05d89ecd62fc34f82b23dcf306c93764aec4b
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+#
+# General architecture dependent options
+#
+
+config OPROFILE
+ tristate "OProfile system profiling"
+ depends on PROFILING
+ depends on HAVE_OPROFILE
+ depends on !PREEMPT_RT_FULL
+ select RING_BUFFER
+ select RING_BUFFER_ALLOW_SWAP
+ help
+ OProfile is a profiling system capable of profiling the
+ whole system, include the kernel, kernel modules, libraries,
+ and applications.
+
+ If unsure, say N.
+
+config OPROFILE_EVENT_MULTIPLEX
+ bool "OProfile multiplexing support (EXPERIMENTAL)"
+ default n
+ depends on OPROFILE && X86
+ help
+ The number of hardware counters is limited. The multiplexing
+ feature enables OProfile to gather more events than counters
+ are provided by the hardware. This is realized by switching
+ between events at an user specified time interval.
+
+ If unsure, say N.
+
+config HAVE_OPROFILE
+ bool
+
+config OPROFILE_NMI_TIMER
+ def_bool y
+ depends on PERF_EVENTS && HAVE_PERF_EVENTS_NMI
+
+config KPROBES
+ bool "Kprobes"
+ depends on MODULES
+ depends on HAVE_KPROBES
+ select KALLSYMS
+ help
+ Kprobes allows you to trap at almost any kernel address and
+ execute a callback function. register_kprobe() establishes
+ a probepoint and specifies the callback. Kprobes is useful
+ for kernel debugging, non-intrusive instrumentation and testing.
+ If in doubt, say "N".
+
+config JUMP_LABEL
+ bool "Optimize very unlikely/likely branches"
+ depends on HAVE_ARCH_JUMP_LABEL
+ depends on (!INTERRUPT_OFF_HIST && !PREEMPT_OFF_HIST && !WAKEUP_LATENCY_HIST && !MISSED_TIMER_OFFSETS_HIST)
+ help
+ This option enables a transparent branch optimization that
+ makes certain almost-always-true or almost-always-false branch
+ conditions even cheaper to execute within the kernel.
+
+ Certain performance-sensitive kernel code, such as trace points,
+ scheduler functionality, networking code and KVM have such
+ branches and include support for this optimization technique.
+
+ If it is detected that the compiler has support for "asm goto",
+ the kernel will compile such branches with just a nop
+ instruction. When the condition flag is toggled to true, the
+ nop will be converted to a jump instruction to execute the
+ conditional block of instructions.
+
+ This technique lowers overhead and stress on the branch prediction
+ of the processor and generally makes the kernel faster. The update
+ of the condition is slower, but those are always very rare.
+
+ ( On 32-bit x86, the necessary options added to the compiler
+ flags may increase the size of the kernel slightly. )
+
+config OPTPROBES
+ def_bool y
+ depends on KPROBES && HAVE_OPTPROBES
+ depends on !PREEMPT
+
+config HAVE_EFFICIENT_UNALIGNED_ACCESS
+ bool
+ help
+ Some architectures are unable to perform unaligned accesses
+ without the use of get_unaligned/put_unaligned. Others are
+ unable to perform such accesses efficiently (e.g. trap on
+ unaligned access and require fixing it up in the exception
+ handler.)
+
+ This symbol should be selected by an architecture if it can
+ perform unaligned accesses efficiently to allow different
+ code paths to be selected for these cases. Some network
+ drivers, for example, could opt to not fix up alignment
+ problems with received packets if doing so would not help
+ much.
+
+ See Documentation/unaligned-memory-access.txt for more
+ information on the topic of unaligned memory accesses.
+
+config HAVE_SYSCALL_WRAPPERS
+ bool
+
+config KRETPROBES
+ def_bool y
+ depends on KPROBES && HAVE_KRETPROBES
+
+config USER_RETURN_NOTIFIER
+ bool
+ depends on HAVE_USER_RETURN_NOTIFIER
+ help
+ Provide a kernel-internal notification when a cpu is about to
+ switch to user mode.
+
+config HAVE_IOREMAP_PROT
+ bool
+
+config HAVE_KPROBES
+ bool
+
+config HAVE_KRETPROBES
+ bool
+
+config HAVE_OPTPROBES
+ bool
+
+config HAVE_NMI_WATCHDOG
+ bool
+#
+# An arch should select this if it provides all these things:
+#
+# task_pt_regs() in asm/processor.h or asm/ptrace.h
+# arch_has_single_step() if there is hardware single-step support
+# arch_has_block_step() if there is hardware block-step support
+# asm/syscall.h supplying asm-generic/syscall.h interface
+# linux/regset.h user_regset interfaces
+# CORE_DUMP_USE_REGSET #define'd in linux/elf.h
+# TIF_SYSCALL_TRACE calls tracehook_report_syscall_{entry,exit}
+# TIF_NOTIFY_RESUME calls tracehook_notify_resume()
+# signal delivery calls tracehook_signal_handler()
+#
+config HAVE_ARCH_TRACEHOOK
+ bool
+
+config HAVE_DMA_ATTRS
+ bool
+
+config USE_GENERIC_SMP_HELPERS
+ bool
+
+config HAVE_REGS_AND_STACK_ACCESS_API
+ bool
+ help
+ This symbol should be selected by an architecure if it supports
+ the API needed to access registers and stack entries from pt_regs,
+ declared in asm/ptrace.h
+ For example the kprobes-based event tracer needs this API.
+
+config HAVE_CLK
+ bool
+ help
+ The <linux/clk.h> calls support software clock gating and
+ thus are a key power management tool on many systems.
+
+config HAVE_DMA_API_DEBUG
+ bool
+
+config HAVE_HW_BREAKPOINT
+ bool
+ depends on PERF_EVENTS
+
+config HAVE_MIXED_BREAKPOINTS_REGS
+ bool
+ depends on HAVE_HW_BREAKPOINT
+ help
+ Depending on the arch implementation of hardware breakpoints,
+ some of them have separate registers for data and instruction
+ breakpoints addresses, others have mixed registers to store
+ them but define the access type in a control register.
+ Select this option if your arch implements breakpoints under the
+ latter fashion.
+
+config HAVE_USER_RETURN_NOTIFIER
+ bool
+
+config HAVE_PERF_EVENTS_NMI
+ bool
+ help
+ System hardware can generate an NMI using the perf event
+ subsystem. Also has support for calculating CPU cycle events
+ to determine how many clock cycles in a given period.
+
+config HAVE_ARCH_JUMP_LABEL
+ bool
+
+config HAVE_ARCH_MUTEX_CPU_RELAX
+ bool
+
+config HAVE_RCU_TABLE_FREE
+ bool
+
+config ARCH_HAVE_NMI_SAFE_CMPXCHG
+ bool
+
+config HAVE_ALIGNED_STRUCT_PAGE
+ bool
+ help
+ This makes sure that struct pages are double word aligned and that
+ e.g. the SLUB allocator can perform double word atomic operations
+ on a struct page for better performance. However selecting this
+ might increase the size of a struct page by a word.
+
+config HAVE_CMPXCHG_LOCAL
+ bool
+
+config HAVE_CMPXCHG_DOUBLE
+ bool
+
+config ARCH_WANT_OLD_COMPAT_IPC
+ bool
+
+source "kernel/gcov/Kconfig"