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74bc7ceebf
Introduce new interfaces, dma_*map*_attrs(), for passing architecture-specific
attributes when memory is mapped and unmapped for DMA. Give the interfaces
default implementations which ignore attributes. Also introduce the
dma_{set|get}_attr() interfaces for setting and retrieving individual
attributes. Define one attribute, DMA_ATTR_WRITE_BARRIER, in anticipation of
its use by ia64/sn. Select whether architectures implement arch-specific
versions of the dma_*map*_attrs() interfaces via HAVE_DMA_ATTRS in Kconfig.
[[email protected]: dma_{set,get}_attr() have to be static inline]
Signed-off-by: Arthur Kepner <[email protected]>
Cc: Tony Luck <[email protected]>
Cc: Jesse Barnes <[email protected]>
Cc: Jes Sorensen <[email protected]>
Cc: Randy Dunlap <[email protected]>
Cc: Roland Dreier <[email protected]>
Cc: James Bottomley <[email protected]>
Cc: David Miller <[email protected]>
Cc: Benjamin Herrenschmidt <[email protected]>
Cc: Grant Grundler <[email protected]>
Cc: Michael Ellerman <[email protected]>
Signed-off-by: Mark Nelson <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
41 lines
920 B
Text
41 lines
920 B
Text
#
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# General architecture dependent options
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#
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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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config HAVE_OPROFILE
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def_bool n
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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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config KRETPROBES
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def_bool y
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depends on KPROBES && HAVE_KRETPROBES
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config HAVE_KPROBES
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def_bool n
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config HAVE_KRETPROBES
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def_bool n
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config HAVE_DMA_ATTRS
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def_bool n
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