linux/kernel/irq/Kconfig
Thomas Gleixner 78f90d91f3 genirq: Remove the now unused sparse irq leftovers
The move_irq_desc() function was only used due to the problem that the
allocator did not free the old descriptors. So the descriptors had to
be moved in create_irq_nr(). That's history.

The code would have never been able to move active interrupt
descriptors on affinity settings. That can be done in a completely
different way w/o all this horror.

Remove all of it.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Ingo Molnar <mingo@elte.hu>
2010-10-12 16:53:44 +02:00

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config HAVE_GENERIC_HARDIRQS
def_bool n
if HAVE_GENERIC_HARDIRQS
menu "IRQ subsystem"
#
# Interrupt subsystem related configuration options
#
config GENERIC_HARDIRQS
def_bool y
config GENERIC_HARDIRQS_NO__DO_IRQ
def_bool y
# Select this to disable the deprecated stuff
config GENERIC_HARDIRQS_NO_DEPRECATED
def_bool n
# Options selectable by the architecture code
config HAVE_SPARSE_IRQ
def_bool n
config GENERIC_IRQ_PROBE
def_bool n
config GENERIC_PENDING_IRQ
def_bool n
config AUTO_IRQ_AFFINITY
def_bool n
config IRQ_PER_CPU
def_bool n
config HARDIRQS_SW_RESEND
def_bool n
config SPARSE_IRQ
bool "Support sparse irq numbering"
depends on HAVE_SPARSE_IRQ
---help---
Sparse irq numbering is useful for distro kernels that want
to define a high CONFIG_NR_CPUS value but still want to have
low kernel memory footprint on smaller machines.
( Sparse irqs can also be beneficial on NUMA boxes, as they spread
out the interrupt descriptors in a more NUMA-friendly way. )
If you don't know what to do here, say N.
endmenu
endif