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authorPaul Mundt <lethal@linux-sh.org>2007-11-02 12:16:51 +0900
committerPaul Mundt <lethal@linux-sh.org>2007-11-02 12:16:51 +0900
commit110ed28246a0063a5984d7f72ba5c97f154a51cf (patch)
treecf1611203f161caabd9c24022df2477656eda853 /arch/sh/Kconfig.debug
parent0e670685e4925930000a678c74eb1cbf23b415fa (diff)
downloadvexpress-lsk-110ed28246a0063a5984d7f72ba5c97f154a51cf.tar.gz
sh: Decouple 4k and soft/hardirq stacks.
While using separate IRQ stacks can cut down on stack consumption, many users can also use 4k stacks directly without the additional need of separate stacks for soft and hardirqs. With this split, we support the same rationale for 4KSTACKS as m68knommu, with the IRQSTACKS abstraction as per ppc64. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Diffstat (limited to 'arch/sh/Kconfig.debug')
-rw-r--r--arch/sh/Kconfig.debug8
1 files changed, 8 insertions, 0 deletions
diff --git a/arch/sh/Kconfig.debug b/arch/sh/Kconfig.debug
index b507b501f0c..ab2f9f3c354 100644
--- a/arch/sh/Kconfig.debug
+++ b/arch/sh/Kconfig.debug
@@ -86,6 +86,14 @@ config 4KSTACKS
on the VM subsystem for higher order allocations. This option
will also use IRQ stacks to compensate for the reduced stackspace.
+config IRQSTACKS
+ bool "Use separate kernel stacks when processing interrupts"
+ depends on DEBUG_KERNEL
+ help
+ If you say Y here the kernel will use separate kernel stacks
+ for handling hard and soft interrupts. This can help avoid
+ overflowing the process kernel stacks.
+
config SH_KGDB
bool "Include KGDB kernel debugger"
select FRAME_POINTER