Re: [PATCH 3/5] ftrace: print real return in dumpstack forfunction graph

From: Ingo Molnar
Date: Wed Dec 03 2008 - 03:12:24 EST



* Steven Rostedt <rostedt@xxxxxxxxxxx> wrote:

> This does give a funny side effect in the stack tracer output:
>
> Depth Size Location (80 entries)
> ----- ---- --------
> 0) 4144 48 save_stack_trace+0x2f/0x4d
> 1) 4096 128 ftrace_call+0x5/0x2b
> 2) 3968 16 mempool_alloc_slab+0x16/0x18
> 3) 3952 384 return_to_handler+0x0/0x73
> 4) 3568 -240 stack_trace_call+0x11d/0x209
> 5) 3808 144 return_to_handler+0x0/0x73
> 6) 3664 -128 mempool_alloc+0x4d/0xfe
> 7) 3792 128 return_to_handler+0x0/0x73
> 8) 3664 -32 scsi_sg_alloc+0x48/0x4a [scsi_mod]
>
> As you can see, the real functions are now negative. This is due
> to them not being found inside the stack.

Can we do something to output something less funny?

Ingo
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