Re: Remove -mno-omit-leaf-frame-pointer from build flags

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On Mon, Jul 7, 2025 at 6:43 PM Frank Ch. Eigler <fche@xxxxxxxxxx> wrote:
>
> Neal Gompa <ngompa13@xxxxxxxxx> writes:
>
> > [...]  So my semi-naive interpretation of the problem here is that
> > glibc is special in that it doesn't provide any support for real-time
> > tracing or profiling. [...]
>
> Note that glibc does support unwinding-based tracing/profiling via the
> .cfi directives even in assembly code, which let an unwinder compute
> backtraces from fully-optimized binaries.  Recent work in elfutils &
> sysprof have shown lowish and decreasing overheads of that approach.
>

But those are hand-written directives, no? That approach doesn't scale at all.


-- 
真実はいつも一つ!/ Always, there's only one truth!
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