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
43 depends on KALLSYMS && MODULES
44 depends on HAVE_KPROBES
46 Kprobes allows you to trap at almost any kernel address and
47 execute a callback function. register_kprobe() establishes
48 a probepoint and specifies the callback. Kprobes is useful
49 for kernel debugging, non-intrusive instrumentation and testing.
52 config HAVE_EFFICIENT_UNALIGNED_ACCESS
55 Some architectures are unable to perform unaligned accesses
56 without the use of get_unaligned/put_unaligned. Others are
57 unable to perform such accesses efficiently (e.g. trap on
58 unaligned access and require fixing it up in the exception
61 This symbol should be selected by an architecture if it can
62 perform unaligned accesses efficiently to allow different
63 code paths to be selected for these cases. Some network
64 drivers, for example, could opt to not fix up alignment
65 problems with received packets if doing so would not help
68 See Documentation/unaligned-memory-access.txt for more
69 information on the topic of unaligned memory accesses.
71 config HAVE_SYSCALL_WRAPPERS
76 depends on KPROBES && HAVE_KRETPROBES
78 config HAVE_IOREMAP_PROT
84 config HAVE_KRETPROBES
88 # An arch should select this if it provides all these things:
90 # task_pt_regs() in asm/processor.h or asm/ptrace.h
91 # arch_has_single_step() if there is hardware single-step support
92 # arch_has_block_step() if there is hardware block-step support
93 # asm/syscall.h supplying asm-generic/syscall.h interface
94 # linux/regset.h user_regset interfaces
95 # CORE_DUMP_USE_REGSET #define'd in linux/elf.h
96 # TIF_SYSCALL_TRACE calls tracehook_report_syscall_{entry,exit}
97 # TIF_NOTIFY_RESUME calls tracehook_notify_resume()
98 # signal delivery calls tracehook_signal_handler()
100 config HAVE_ARCH_TRACEHOOK
103 config HAVE_DMA_ATTRS
106 config USE_GENERIC_SMP_HELPERS
112 The <linux/clk.h> calls support software clock gating and
113 thus are a key power management tool on many systems.
115 config HAVE_DMA_API_DEBUG