2008-02-03 04:10:33 +08:00
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#
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# General architecture dependent options
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#
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2008-02-03 04:10:36 +08:00
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config OPROFILE
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tristate "OProfile system profiling (EXPERIMENTAL)"
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depends on PROFILING
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depends on HAVE_OPROFILE
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help
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OProfile is a profiling system capable of profiling the
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whole system, include the kernel, kernel modules, libraries,
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and applications.
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If unsure, say N.
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2008-07-23 03:09:06 +08:00
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config OPROFILE_IBS
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bool "OProfile AMD IBS support (EXPERIMENTAL)"
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default n
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depends on OPROFILE && SMP && X86
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help
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Instruction-Based Sampling (IBS) is a new profiling
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technique that provides rich, precise program performance
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information. IBS is introduced by AMD Family10h processors
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2008-10-24 21:05:12 +08:00
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(AMD Opteron Quad-Core processor "Barcelona") to overcome
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2008-07-23 03:09:06 +08:00
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the limitations of conventional performance counter
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sampling.
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If unsure, say N.
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2008-02-03 04:10:36 +08:00
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config HAVE_OPROFILE
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2008-10-16 13:01:38 +08:00
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bool
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2008-02-03 04:10:36 +08:00
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config KPROBES
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bool "Kprobes"
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depends on KALLSYMS && MODULES
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depends on HAVE_KPROBES
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help
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Kprobes allows you to trap at almost any kernel address and
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execute a callback function. register_kprobe() establishes
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a probepoint and specifies the callback. Kprobes is useful
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for kernel debugging, non-intrusive instrumentation and testing.
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If in doubt, say "N".
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2008-07-25 16:45:33 +08:00
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config HAVE_EFFICIENT_UNALIGNED_ACCESS
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2008-10-16 13:01:38 +08:00
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bool
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2008-07-25 16:45:33 +08:00
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help
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Some architectures are unable to perform unaligned accesses
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without the use of get_unaligned/put_unaligned. Others are
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unable to perform such accesses efficiently (e.g. trap on
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unaligned access and require fixing it up in the exception
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handler.)
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This symbol should be selected by an architecture if it can
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perform unaligned accesses efficiently to allow different
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code paths to be selected for these cases. Some network
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drivers, for example, could opt to not fix up alignment
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problems with received packets if doing so would not help
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much.
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See Documentation/unaligned-memory-access.txt for more
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information on the topic of unaligned memory accesses.
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2008-03-05 06:28:37 +08:00
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config KRETPROBES
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def_bool y
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depends on KPROBES && HAVE_KRETPROBES
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2008-07-24 12:27:05 +08:00
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config HAVE_IOREMAP_PROT
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2008-10-16 13:01:38 +08:00
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bool
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2008-07-24 12:27:05 +08:00
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2008-02-03 04:10:36 +08:00
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config HAVE_KPROBES
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2008-10-16 13:01:38 +08:00
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bool
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2008-03-05 06:28:37 +08:00
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config HAVE_KRETPROBES
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2008-10-16 13:01:38 +08:00
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bool
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2008-04-29 16:00:30 +08:00
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2008-07-26 10:45:57 +08:00
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#
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# An arch should select this if it provides all these things:
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#
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# task_pt_regs() in asm/processor.h or asm/ptrace.h
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# arch_has_single_step() if there is hardware single-step support
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# arch_has_block_step() if there is hardware block-step support
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# asm/syscall.h supplying asm-generic/syscall.h interface
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# linux/regset.h user_regset interfaces
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# CORE_DUMP_USE_REGSET #define'd in linux/elf.h
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# TIF_SYSCALL_TRACE calls tracehook_report_syscall_{entry,exit}
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# TIF_NOTIFY_RESUME calls tracehook_notify_resume()
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# signal delivery calls tracehook_signal_handler()
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#
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config HAVE_ARCH_TRACEHOOK
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2008-10-16 13:01:38 +08:00
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bool
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2008-07-26 10:45:57 +08:00
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2008-04-29 16:00:30 +08:00
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config HAVE_DMA_ATTRS
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2008-10-16 13:01:38 +08:00
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bool
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2008-06-26 17:21:34 +08:00
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config USE_GENERIC_SMP_HELPERS
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2008-10-16 13:01:38 +08:00
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bool
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2008-07-24 12:26:48 +08:00
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config HAVE_CLK
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2008-10-16 13:01:38 +08:00
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bool
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2008-07-24 12:26:48 +08:00
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help
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The <linux/clk.h> calls support software clock gating and
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thus are a key power management tool on many systems.
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