3 config TRACE_IRQFLAGS_SUPPORT
6 source "lib/Kconfig.debug"
8 config SH_STANDARD_BIOS
9 bool "Use LinuxSH standard BIOS"
12 Say Y here if your target has the gdb-sh-stub
13 package from www.m17n.org (or any conforming standard LinuxSH BIOS)
14 in FLASH or EPROM. The kernel will use standard BIOS calls during
15 boot for various housekeeping tasks (including calls to read and
16 write characters to a system console, get a MAC address from an
17 on-board Ethernet interface, and shut down the hardware). Note this
18 does not work with machines with an existing operating system in
19 mask ROM and no flash (WindowsCE machines fall in this category).
23 bool "Check for stack overflows"
24 depends on DEBUG_KERNEL && SUPERH32
26 This option will cause messages to be printed if free stack space
27 drops below a certain limit. Saying Y here will add overhead to
28 every function call and will therefore incur a major
29 performance hit. Most users should say N.
31 config DEBUG_STACK_USAGE
32 bool "Stack utilization instrumentation"
33 depends on DEBUG_KERNEL
35 Enables the display of the minimum amount of free stack which each
36 task has ever had available in the sysrq-T and sysrq-P debug output.
38 This option will slow down process creation somewhat.
41 bool "Use 4Kb for kernel stacks instead of 8Kb"
42 depends on DEBUG_KERNEL && (MMU || BROKEN) && !PAGE_SIZE_64KB
44 If you say Y here the kernel will use a 4Kb stacksize for the
45 kernel stack attached to each process/thread. This facilitates
46 running more threads on a system and also reduces the pressure
47 on the VM subsystem for higher order allocations. This option
48 will also use IRQ stacks to compensate for the reduced stackspace.
51 bool "Use separate kernel stacks when processing interrupts"
52 depends on DEBUG_KERNEL && SUPERH32 && BROKEN
54 If you say Y here the kernel will use separate kernel stacks
55 for handling hard and soft interrupts. This can help avoid
56 overflowing the process kernel stacks.
59 bool "Show disassembly of nearby code in register dumps"
60 depends on DEBUG_KERNEL && SUPERH32
61 default y if DEBUG_BUGVERBOSE
64 This prints out a code trace of the instructions leading up to
65 the faulting instruction as a debugging aid. As this does grow
66 the kernel in size a bit, most users will want to say N here.
68 Those looking for more verbose debugging output should say Y.
71 bool "Enable the DWARF unwinder for stacktraces"
75 Enabling this option will make stacktraces more accurate, at
76 the cost of an increase in overall kernel size.
79 bool "Avoid zeroing BSS (to speed-up startup on suitable platforms)"
80 depends on DEBUG_KERNEL
83 If running in painfully slow environments, such as an RTL
84 simulation or from remote memory via SHdebug, where the memory
85 can already be gauranteed to ber zeroed on boot, say Y.
87 For all other cases, say N. If this option seems perplexing, or
88 you aren't sure, say N.
91 bool "Debug: set SR.WATCH to enable hardware watchpoints and trace"
97 depends on STACK_DEBUG || FUNCTION_TRACER