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Remove stack unwinder for now

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It has caused more problems than it ever really solved, and is
apparently not getting cleaned up and fixed.  We can put it back when
it's stable and isn't likely to make warning or bug events worse.

In the meantime, enable frame pointers for more readable stack traces.

Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Linus Torvalds
2006-12-15 08:43:13 -08:00
parent d1998ef38a
commit d1526e2cda
17 changed files with 3 additions and 1870 deletions
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32
arch/i386/kernel/entry.S
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@@ -979,38 +979,6 @@ ENTRY(spurious_interrupt_bug)
jmp error_code
CFI_ENDPROC
#ifdef CONFIG_STACK_UNWIND
ENTRY(arch_unwind_init_running)
CFI_STARTPROC
movl 4(%esp), %edx
movl (%esp), %ecx
leal 4(%esp), %eax
movl %ebx, PT_EBX(%edx)
xorl %ebx, %ebx
movl %ebx, PT_ECX(%edx)
movl %ebx, PT_EDX(%edx)
movl %esi, PT_ESI(%edx)
movl %edi, PT_EDI(%edx)
movl %ebp, PT_EBP(%edx)
movl %ebx, PT_EAX(%edx)
movl $__USER_DS, PT_DS(%edx)
movl $__USER_DS, PT_ES(%edx)
movl $0, PT_GS(%edx)
movl %ebx, PT_ORIG_EAX(%edx)
movl %ecx, PT_EIP(%edx)
movl 12(%esp), %ecx
movl $__KERNEL_CS, PT_CS(%edx)
movl %ebx, PT_EFLAGS(%edx)
movl %eax, PT_OLDESP(%edx)
movl 8(%esp), %eax
movl %ecx, 8(%esp)
movl PT_EBX(%edx), %ebx
movl $__KERNEL_DS, PT_OLDSS(%edx)
jmpl *%eax
CFI_ENDPROC
ENDPROC(arch_unwind_init_running)
#endif
ENTRY(kernel_thread_helper)
pushl $0 # fake return address for unwinder
CFI_STARTPROC