From: Andi Kleen <ak@suse.de>
To: "Jan Beulich" <jbeulich@novell.com>
Cc: linux-kernel@vger.kernel.org, discuss@x86-64.org
Subject: Re: [PATCH 2/3] reliable stack trace support (x86-64)
Date: Tue, 16 May 2006 17:13:39 +0200 [thread overview]
Message-ID: <200605161713.39575.ak@suse.de> (raw)
In-Reply-To: <4469FC22.76E4.0078.0@novell.com>
On Tuesday 16 May 2006 16:21, Jan Beulich wrote:
> These are the x86_64-specific pieces to enable reliable stack traces. The
> only restriction with this is that it currently cannot unwind across the
> interrupt->normal stack boundary, as that transition is lacking proper
> annotation.
It would be nice if you could submit a patch to fix that.
>
> +#ifdef CONFIG_STACK_UNWIND
> + . = ALIGN(8);
> + .eh_frame : AT(ADDR(.eh_frame) - LOAD_OFFSET) {
> + __start_unwind = .;
> + *(.eh_frame)
> + __end_unwind = .;
> + }
> +#endif
Ah ok - it's there. Ignore my earlier question then.
> +#define UNW_PC(frame) (frame)->regs.rip
> +#define UNW_SP(frame) (frame)->regs.rsp
I think we alreay have instruction_pointer(). Better add a stack_pointer()
in ptrace.h too.
-Andi
next prev parent reply other threads:[~2006-05-16 15:15 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-05-16 14:21 [PATCH 2/3] reliable stack trace support (x86-64) Jan Beulich
2006-05-16 15:09 ` Ingo Molnar
2006-05-16 16:04 ` Jan Beulich
2006-05-16 15:13 ` Andi Kleen [this message]
2006-05-16 16:06 ` Jan Beulich
2006-05-16 17:05 ` [discuss] " Andi Kleen
2006-05-18 9:37 ` Jan Beulich
2006-05-18 10:20 ` Andi Kleen
2006-05-18 12:02 ` Jan Beulich
2006-05-18 12:25 ` Andi Kleen
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