Re: [PATCH] x86: fix oprofile kernel callgraph regression

[Hugh Dickins]

On Tue, 14 Feb 2006, Gerald Britton wrote:

> Fix x86 oprofile regression introduced by:
>   commit c34d1b4d165c67b966bca4aba026443d7ff161eb
>   [PATCH] mm: kill check_user_page_readable
> 
> That commit reorganized tests for the userspace stack walking moving all
> those tests into dump_backtrace(), however, dump_backtrace() was used for
> both userspace and kernel stalk walking.  The result is typically no
> recorded callgraph information for kernel samples.
> 
> Revive the original function as dump_kernel_backtrace() and rename the
> other to dump_user_backtrace() to avoid future confusion.
> 
> Signed-off-by: Gerald Britton <gbritton@xxxxxxxxxxxx>

Apology-from: Hugh Dickins <hugh@xxxxxxxxxxx>
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