config DEBUG_PAGEALLOC
bool "Debug page memory allocations"
- depends on DEBUG_KERNEL && !SOFTWARE_SUSPEND
+ depends on DEBUG_KERNEL && !HIBERNATION
help
Unmap pages from the kernel linear mapping after free_pages().
This results in a large slowdown, but helps to find certain types
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
Select this to enable early debugging for IBM 44x chips via the
inbuilt serial port.
+config PPC_EARLY_DEBUG_CPM
+ bool "Early serial debugging for Freescale CPM-based serial ports"
+ depends on SERIAL_CPM
+ select PIN_TLB if PPC_8xx
+ help
+ Select this to enable early debugging for Freescale chips
+ using a CPM-based serial port. This assumes that the bootwrapper
+ has run, and set up the CPM in a particular way.
+
endchoice
config PPC_EARLY_DEBUG_44x_PHYSLOW
depends PPC_EARLY_DEBUG_44x
default "0x1"
+config PPC_EARLY_DEBUG_CPM_ADDR
+ hex "CPM UART early debug transmit descriptor address"
+ depends on PPC_EARLY_DEBUG_CPM
+ default "0xfa202008" if PPC_EP88XC
+ default "0xf0000008" if CPM2
+ default "0xff002008" if CPM1
+ help
+ This specifies the address of the transmit descriptor
+ used for early debug output. Because it is needed before
+ platform probing is done, all platforms selected must
+ share the same address.
+
endmenu