linux/arch/Kconfig
David Brownell 9483a578df add HAVE_CLK to Kconfig, for driver dependencies
Flag platforms as HAVE_CLK (or not) in Kconfig, based on whether they
support <linux/clk.h> calls, so that otherwise portable drivers which need
those calls can list that dependency.

Something like this is a prerequisite for merging the musb_hdrc driver,
currently used on platforms including Davinci, OMAP2430, OMAP3xx ...  and
the discrete TUSB6010 chip, which doesn't have a natural platform
dependency.  (Used with OMAP 2420 in current Nokia N8x0 tablets.)

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Cc: Russell King <rmk@arm.linux.org.uk>
Acked-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Paul Mundt <lethal@linux-sh.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-07-24 10:47:13 -07:00

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#
# General architecture dependent options
#
config OPROFILE
tristate "OProfile system profiling (EXPERIMENTAL)"
depends on PROFILING
depends on HAVE_OPROFILE
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 HAVE_OPROFILE
def_bool n
config KPROBES
bool "Kprobes"
depends on KALLSYMS && MODULES
depends on HAVE_KPROBES
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 KRETPROBES
def_bool y
depends on KPROBES && HAVE_KRETPROBES
config HAVE_KPROBES
def_bool n
config HAVE_KRETPROBES
def_bool n
config HAVE_DMA_ATTRS
def_bool n
config USE_GENERIC_SMP_HELPERS
def_bool n
config HAVE_CLK
def_bool n
help
The <linux/clk.h> calls support software clock gating and
thus are a key power management tool on many systems.