Remove stack unwinder for now

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>

1 files changed, 0 insertions, 33 deletions

diff --git a/arch/x86_64/kernel/entry.S b/arch/x86_64/kernel/entry.S
index 601d332c4b79..9f5dac64aa8f 100644
--- a/arch/x86_64/kernel/entry.S
+++ b/arch/x86_64/kernel/entry.S
@@ -1155,36 +1155,3 @@ ENTRY(call_softirq)
         ret
         CFI_ENDPROC
 ENDPROC(call_softirq)
-
-#ifdef CONFIG_STACK_UNWIND
-ENTRY(arch_unwind_init_running)
-        CFI_STARTPROC
-        movq    %r15, R15(%rdi)
-        movq    %r14, R14(%rdi)
-        xchgq   %rsi, %rdx
-        movq    %r13, R13(%rdi)
-        movq    %r12, R12(%rdi)
-        xorl    %eax, %eax
-        movq    %rbp, RBP(%rdi)
-        movq    %rbx, RBX(%rdi)
-        movq    (%rsp), %rcx
-        movq    %rax, R11(%rdi)
-        movq    %rax, R10(%rdi)
-        movq    %rax, R9(%rdi)
-        movq    %rax, R8(%rdi)
-        movq    %rax, RAX(%rdi)
-        movq    %rax, RCX(%rdi)
-        movq    %rax, RDX(%rdi)
-        movq    %rax, RSI(%rdi)
-        movq    %rax, RDI(%rdi)
-        movq    %rax, ORIG_RAX(%rdi)
-        movq    %rcx, RIP(%rdi)
-        leaq    8(%rsp), %rcx
-        movq    $__KERNEL_CS, CS(%rdi)
-        movq    %rax, EFLAGS(%rdi)
-        movq    %rcx, RSP(%rdi)
-        movq    $__KERNEL_DS, SS(%rdi)
-        jmpq    *%rdx
-        CFI_ENDPROC
-ENDPROC(arch_unwind_init_running)
-#endif