Re: [PATCH] perf machine: Don't ignore _etext when not a text symbol

[Christophe Leroy]

Le 08/01/2025 à 21:14, Arnaldo Carvalho de Melo a écrit :
> On Wed, Jan 08, 2025 at 10:15:24AM +0100, Christophe Leroy wrote:
> > Depending on how vmlinux.lds is written, _etext might be the very
> > first data symbol instead of the very last text symbol.
> >
> > Don't require it to be a text symbol, accept any symbol type.
>
> I'm adding a Link:
>
> Link: https://eur01.safelinks.protection.outlook.com/?url=https%3A%2F%2Flore.kernel.org%2Fall%2F752a31b0-4370-4f52-b7cc-45f0078c1d6c%40csgroup.eu&data=05%7C02%7Cchristophe.leroy%40csgroup.eu%7C914f4c7995574ee91f5c08dd30211dd6%7C8b87af7d86474dc78df45f69a2011bb5%7C0%7C0%7C638719640997470461%7CUnknown%7CTWFpbGZsb3d8eyJFbXB0eU1hcGkiOnRydWUsIlYiOiIwLjAuMDAwMCIsIlAiOiJXaW4zMiIsIkFOIjoiTWFpbCIsIldUIjoyfQ%3D%3D%7C0%7C%7C%7C&sdata=kqCNbhhgKri3TlJaUb3mkTU6NyFRzhnb%2BDiK93h9aSQ%3D&reserved=0
>
> To give more context as where this has been observed, and also add a
> snippet of your explanation there, this:
>
> ----
> # grep -e _stext -e _etext -e _edata /proc/kallsyms
> c0000000 T _stext
> c08b8000 D _etext
>
> So there is no _edata and _etext is not text

For the absence of _edata, I sent another patch, will you take it as 
well ? :

https://lore.kernel.org/linux-perf-users/2fec8c50c271dff59f0177ff0884b6c374486ba5.1736327770.git.christophe.leroy@xxxxxxxxxx/T/#u

Thanks
Christophe