Re: [RFC] Merging ftrace_stack, perf_callchain, oprofile->backtrace and stack_trace

Aleksa Sarai <[email protected]> Sun, 21 Oct 2018 20:41:33 +1100

Newsgroups	gmane.linux.kernel,gmane.linux.oprofile
Message-ID	<20181021094133.nvqhs73khwx2xe4a@ryuk>

On 2018-10-21, Aleksa Sarai <[email protected]> wrote:
> However, in working on this patch, I've noticed that there appear to be
> several different implementations of "get the stack trace from this
> pt_regs" which all appear quite similar. Namely:
> 
>   * struct ftrace_stack;

Sorry, I made a mistake here. ftrace_stack *does* use stack_trace under
the hood, and so it can be easily modified to use the saved kretprobe
stack. The only issue is with perf_callchain_entry (which affects
bpf_get_stack).

-- 
Aleksa Sarai
Senior Software Engineer (Containers)
SUSE Linux GmbH
<https://www.cyphar.com/>

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