2 # General architecture dependent options
6 tristate "OProfile system profiling (EXPERIMENTAL)"
8 depends on HAVE_OPROFILE
9 depends on TRACING_SUPPORT
13 OProfile is a profiling system capable of profiling the
14 whole system, include the kernel, kernel modules, libraries,
20 bool "OProfile AMD IBS support (EXPERIMENTAL)"
22 depends on OPROFILE && SMP && X86
24 Instruction-Based Sampling (IBS) is a new profiling
25 technique that provides rich, precise program performance
26 information. IBS is introduced by AMD Family10h processors
27 (AMD Opteron Quad-Core processor "Barcelona") to overcome
28 the limitations of conventional performance counter
38 depends on KALLSYMS && MODULES
39 depends on HAVE_KPROBES
41 Kprobes allows you to trap at almost any kernel address and
42 execute a callback function. register_kprobe() establishes
43 a probepoint and specifies the callback. Kprobes is useful
44 for kernel debugging, non-intrusive instrumentation and testing.
47 config HAVE_EFFICIENT_UNALIGNED_ACCESS
50 Some architectures are unable to perform unaligned accesses
51 without the use of get_unaligned/put_unaligned. Others are
52 unable to perform such accesses efficiently (e.g. trap on
53 unaligned access and require fixing it up in the exception
56 This symbol should be selected by an architecture if it can
57 perform unaligned accesses efficiently to allow different
58 code paths to be selected for these cases. Some network
59 drivers, for example, could opt to not fix up alignment
60 problems with received packets if doing so would not help
63 See Documentation/unaligned-memory-access.txt for more
64 information on the topic of unaligned memory accesses.
66 config HAVE_SYSCALL_WRAPPERS
71 depends on KPROBES && HAVE_KRETPROBES
73 config HAVE_IOREMAP_PROT
79 config HAVE_KRETPROBES
83 # An arch should select this if it provides all these things:
85 # task_pt_regs() in asm/processor.h or asm/ptrace.h
86 # arch_has_single_step() if there is hardware single-step support
87 # arch_has_block_step() if there is hardware block-step support
88 # asm/syscall.h supplying asm-generic/syscall.h interface
89 # linux/regset.h user_regset interfaces
90 # CORE_DUMP_USE_REGSET #define'd in linux/elf.h
91 # TIF_SYSCALL_TRACE calls tracehook_report_syscall_{entry,exit}
92 # TIF_NOTIFY_RESUME calls tracehook_notify_resume()
93 # signal delivery calls tracehook_signal_handler()
95 config HAVE_ARCH_TRACEHOOK
101 config USE_GENERIC_SMP_HELPERS
107 The <linux/clk.h> calls support software clock gating and
108 thus are a key power management tool on many systems.
110 config HAVE_DMA_API_DEBUG
113 config HAVE_DEFAULT_NO_SPIN_MUTEXES