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authorMichael Ellerman <michael@ellerman.id.au>2007-08-28 18:47:57 +1000
committerPaul Mackerras <paulus@samba.org>2007-09-14 01:33:20 +1000
commit60b332e755da7dbf32f1660973ce4f97ebf05d05 (patch)
tree0f13a0e4c80b668c386cbb5a3766cb607e8166f8 /arch/powerpc/Kconfig.debug
parent7866291d4cabf5491d4ecb62787308f8b8958f59 (diff)
downloadlinaro-lsk-60b332e755da7dbf32f1660973ce4f97ebf05d05.tar.gz
[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 <wei.zhang@freescale.com> Signed-off-by: Chen Gong <G.Chen@freescale.com> Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
Diffstat (limited to 'arch/powerpc/Kconfig.debug')
-rw-r--r--arch/powerpc/Kconfig.debug10
1 files changed, 10 insertions, 0 deletions
diff --git a/arch/powerpc/Kconfig.debug b/arch/powerpc/Kconfig.debug
index 22acece95b1..c38bc223705 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