[lttng-dev] https://lists.lttng.org/pipermail/lttng-dev/2020-May/029631.html

[yashvardhan kukreti]

Thanks Michael, the patch is working

[  157.606699]  SK DEBUG look up symbol .kallsyms_lookup_name
[  157.613527]  SK DEBUG look up symbol get_pfnblock_flags_mask
[  157.644191] LTTng: Loaded modules v2.13.8 (Nordicité) -
devtool-base-1-g1011df74-dirty

Regards,
Shahank

On Mon, Mar 27, 2023 at 11:59 PM Michael Jeanson <mjeanson at efficios.com>
wrote:

> On 2023-03-27 11:52, yashvardhan kukreti wrote:
> >   62 #ifdef LTTNG_CONFIG_PPC64_ELF_ABI_V2
> >   63         /* Substract 4 bytes to get what we originally want */
> >   64         addr = (unsigned long)(((char *)probe.addr) - 4);
> >   65 #elif defined*(LTTNG_*CONFIG_PPC64_ELF_ABI_V1)   << incorrect MACRO
> to
> > used in gerrit review. this is the correct one.
> >   66         /*
> >   67          * Build a function descriptor from the address of
> >
> > /lttng-module-2.13.8/src/wrapper/kallsyms.c:72:32: error: invalid use of
> > undefined type 'struct func_desc'
> > |    72 |  kallsyms_lookup_name_func_desc.addr = (unsigned
> long)probe.addr;
> > /lttng-module-2.13.8/src/wrapper/kallsyms.c:73:32: error: invalid use of
> > undefined type 'struct func_desc'
> > |    73 |  kallsyms_lookup_name_func_desc.toc = ((struct func_desc *)
> > &sprint_symbol)->toc;
> >
> > you either want to use func_descr_t
> >
> https://elixir.bootlin.com/linux/v5.15.104/source/arch/powerpc/include/asm/types.h#L30
> <
> https://elixir.bootlin.com/linux/v5.15.104/source/arch/powerpc/include/asm/types.h#L30
> >
> > or
> > struct ppc64_opd_entry
> >
> https://elixir.bootlin.com/linux/v5.17.15/source/arch/powerpc/include/uapi/asm/elf.h#L293
> <
> https://elixir.bootlin.com/linux/v5.17.15/source/arch/powerpc/include/uapi/asm/elf.h#L293
> >
> >
> > both of which are discontinued from 5.18
>
>
> Hi,
>
> I updated the patch at https://review.lttng.org/c/lttng-modules/+/9113 to
> support kernels older than v5.18. It's only build tested on v5.17 and
> v5.18.
>
> Michael
>
>
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