linux-toradex.git/arch/sh/Kconfig.debug, branch v2.6.32.33

sh: Add initial support for SH7757 CPU subtype

2009-08-21T08:25:47+00:00

Signed-off-by: Yoshihiro Shimoda 
Signed-off-by: Paul Mundt

sh: dwarf unwinder support.

2009-08-13T16:58:43+00:00

This is a first cut at a generic DWARF unwinder for the kernel. It's
still lacking DWARF64 support and the DWARF expression support hasn't
been tested very well but it is generating proper stacktraces on SH for
WARN_ON() and NULL dereferences.

Signed-off-by: Matt Fleming 
Signed-off-by: Paul Mundt

sh: Add early printk support for SH770x CPUs.

2009-08-04T05:38:08+00:00

This adds early printk support for SH770x (tested on SH7709 based hp6xx).

Signed-off-by: Rafael Ignacio Zurita 
Signed-off-by: Paul Mundt

sh: Rework irqflags tracing to fix up CONFIG_PROVE_LOCKING.

2009-07-29T14:01:24+00:00

This cleans up the irqflags tracing code quite a bit and ties it
in to various missing callsites that caused an imbalance when
CONFIG_PROVE_LOCKING was enabled.

Previously this was catching on:

 987 #ifdef CONFIG_PROVE_LOCKING
 988     DEBUG_LOCKS_WARN_ON(!p->hardirqs_enabled);
 989     DEBUG_LOCKS_WARN_ON(!p->softirqs_enabled);
 990 #endif
 991     retval = -EAGAIN;

with hardirqs being doubly enabled, and subsequently bailing out
with the following call trace:

	Call trace:
	[<88035224>] __lock_acquire+0x616/0x6a6
	[<88015a8c>] do_fork+0xf8/0x2b0
	[<880331ec>] trace_hardirqs_on_caller+0xd4/0x114
	[<88241074>] _spin_unlock_irq+0x20/0x64
	[<88035224>] __lock_acquire+0x616/0x6a6
	[<8800386c>] kernel_thread+0x48/0x70
	[<88024ecc>] ____call_usermodehelper+0x0/0x110
	[<88024ecc>] ____call_usermodehelper+0x0/0x110
	[<88003894>] kernel_thread_helper+0x0/0x14
	[<88024bac>] __call_usermodehelper+0x38/0x70
	[<88025dc0>] worker_thread+0x150/0x274
	[<88035b9c>] lock_release+0x0/0x198
	[<88024b74>] __call_usermodehelper+0x0/0x70
	[<88028cf0>] autoremove_wake_function+0x0/0x30
	[<88028bf2>] kthread+0x3e/0x70
	[<88025c70>] worker_thread+0x0/0x274
	[<8800389c>] kernel_thread_helper+0x8/0x14
	[<88028bb4>] kthread+0x0/0x70
	[<88003894>] kernel_thread_helper+0x0/0x14

Reported-by: Nobuhiro Iwamatsu 
Signed-off-by: Stuart Menefy 
Signed-off-by: Matt Fleming 
Signed-off-by: Paul Mundt

sh: Replace DEBUG_STACKOVERFLOW with STACK_DEBUG.

2009-07-11T11:05:34+00:00

STACK_DEBUG ties in to mcount in order to do function-granular stack
overflow checks as opposed to lazily checking from IRQ context. As the
default is nohz, the frequency of overflow checking is too irregular to
catch much useful information, and so the mcount approach employed by
sparc64 is adopted instead.

This kills off the old check entirely from the do_IRQ() path and now
adopts CONFIG_MCOUNT instead.

Signed-off-by: Paul Mundt

sh: Decouple mcount from ftrace.

2009-07-11T10:56:58+00:00

This adds a general CONFIG_MCOUNT in order to permit mcount generation
without ftrace support. This is primarily for allowing platforms to
enable aggressive stack overflow checking without having to enable ftrace
support. Based on the sparc64 implementation.

Signed-off-by: Paul Mundt

sh: Provide diagnostic kernel stack checks

2009-07-11T01:07:58+00:00

Enable kernel stack checking code in both the dynamic ftrace and mcount
code paths. Check the stack to see if it's overflowing and make sure
that the stack pointer contains an address that's either in init_stack
or after the bss.

Signed-off-by: Matt Fleming 
Signed-off-by: Paul Mundt

sh: Kill off unused DEBUG_BOOTMEM symbol.

2009-06-25T12:17:19+00:00

This was killed off in generic code some time ago, kill off the left over
symbol.

Signed-off-by: Paul Mundt

sh: Set EARLY_SCIF_CONSOLE_PORT sanely for SH7786.

2009-06-15T18:58:25+00:00

Signed-off-by: Paul Mundt

sh: Kill off extra cflags Kconfig entry.

2009-05-08T11:20:56+00:00

There is no real reason to use this anymore, as the build system
generally knows what it is doing with regards to cflags mangling.

Signed-off-by: Paul Mundt