Re: [PATCH 1/2] tracing,mm - add kernel pagefault tracepoint for x86 & x86_64

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From: Christoph Hellwig

Subject: Re: [PATCH 1/2] tracing,mm - add kernel pagefault tracepoint for x86 & x86_64

Date: Wednesday, November 10, 2010 - 6:29 am

On Wed, Nov 10, 2010 at 12:56:11PM +0100, Jiri Olsa wrote:
quoted text> +	TP_printk("task=%lx, address=%lx, regs=%lx",
> +		(unsigned long)__entry->task, (unsigned long)__entry->address,
> +			__entry->regs)

How exactly do you use the information in this trace point?  Especially
the undecoded pt_regs doesn't seem very useful to me at all.

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Messages in current thread:

[PATCH 0/2] tracing,mm - add kernel pagefault tracepoint f ..., Jiri Olsa, (Wed Nov 10, 4:56 am)

[PATCH 1/2] tracing,mm - add kernel pagefault tracepoint f ..., Jiri Olsa, (Wed Nov 10, 4:56 am)

Re: [PATCH 1/2] tracing,mm - add kernel pagefault tracepoi ..., Christoph Hellwig, (Wed Nov 10, 6:29 am)

Re: [PATCH 1/2] tracing,mm - add kernel pagefault tracepoi ..., Jiri Olsa, (Wed Nov 10, 6:44 am)

Re: [PATCH 1/2] tracing,mm - add kernel pagefault tracepoi ..., Ingo Molnar, (Wed Nov 10, 6:52 am)

Re: [PATCH 1/2] tracing,mm - add kernel pagefault tracepoi ..., Frederic Weisbecker, (Wed Nov 10, 8:00 am)

Re: [PATCH 1/2] tracing,mm - add kernel pagefault tracepoi ..., Jiri Olsa, (Wed Nov 10, 8:17 am)

Re: [PATCH 1/2] tracing,mm - add kernel pagefault tracepoi ..., Christoph Hellwig, (Wed Nov 10, 8:20 am)

Re: [PATCH 1/2] tracing,mm - add kernel pagefault tracepoi ..., Andi Kleen, (Wed Nov 10, 9:28 am)

Re: [PATCH 1/2] tracing,mm - add kernel pagefault tracepoi ..., Frederic Weisbecker, (Wed Nov 10, 9:44 am)

[PATCHv2 0/2] tracing,mm - add kernel pagefault tracepoint ..., Jiri Olsa, (Thu Nov 11, 2:09 am)

[PATCHv2 1/2] tracing - fix recursive user stack trace, Jiri Olsa, (Thu Nov 11, 2:09 am)

[PATCHv2 2/2] tracing,mm - add kernel pagefault tracepoint ..., Jiri Olsa, (Thu Nov 11, 2:09 am)

Re: [PATCHv2 1/2] tracing - fix recursive user stack trace, Andi Kleen, (Thu Nov 11, 3:34 am)

Re: [PATCHv2 2/2] tracing,mm - add kernel pagefault tracep ..., Christoph Hellwig, (Thu Nov 11, 5:51 am)

Re: [PATCHv2 2/2] tracing,mm - add kernel pagefault tracep ..., Jiri Olsa, (Thu Nov 11, 6:15 am)

Re: [PATCHv2 2/2] tracing,mm - add kernel pagefault tracep ..., Frederic Weisbecker, (Mon Nov 15, 6:43 am)

Re: [PATCHv2 2/2] tracing,mm - add kernel pagefault tracep ..., Andi Kleen, (Mon Nov 15, 7:06 am)

Re: [PATCHv2 2/2] tracing,mm - add kernel pagefault tracep ..., Steven Rostedt, (Mon Nov 15, 7:19 am)

Re: [PATCHv2 2/2] tracing,mm - add kernel pagefault tracep ..., Frederic Weisbecker, (Mon Nov 15, 7:54 am)

Re: [PATCHv2 2/2] tracing,mm - add kernel pagefault tracep ..., Steven Rostedt, (Mon Nov 15,