From 60b332e755da7dbf32f1660973ce4f97ebf05d05 Mon Sep 17 00:00:00 2001 From: Michael Ellerman Date: Tue, 28 Aug 2007 18:47:57 +1000 Subject: [POWERPC] Export virq mapping via debugfs This adds a debugfs file "powerpc/virq_mapping", which shows the virtual to real mapping of irq numbers. Enable it with CONFIG_VIRQ_DEBUG. Signed-off-by: Zhang Wei Signed-off-by: Chen Gong Signed-off-by: Michael Ellerman Signed-off-by: Paul Mackerras --- arch/powerpc/Kconfig.debug | 10 ++++++++++ 1 file changed, 10 insertions(+) (limited to 'arch/powerpc/Kconfig.debug') diff --git a/arch/powerpc/Kconfig.debug b/arch/powerpc/Kconfig.debug index 22acece95b11..c38bc2237057 100644 --- a/arch/powerpc/Kconfig.debug +++ b/arch/powerpc/Kconfig.debug @@ -124,6 +124,16 @@ config IRQSTACKS for handling hard and soft interrupts. This can help avoid overflowing the process kernel stacks. +config VIRQ_DEBUG + bool "Expose hardware/virtual IRQ mapping via debugfs" + depends on DEBUG_FS && PPC_MERGE + help + This option will show the mapping relationship between hardware irq + numbers and virtual irq numbers. The mapping is exposed via debugfs + in the file powerpc/virq_mapping. + + If you don't know what this means you don't need it. + config BDI_SWITCH bool "Include BDI-2000 user context switcher" depends on DEBUG_KERNEL && PPC32 -- cgit v1.2.3