[RFC PATCH 3/3] objtool/mcount: Add powerpc specific functions

[Christophe Leroy]

Le 21/03/2022 à 08:56, Christophe Leroy a écrit :
> 
> 
> Le 21/03/2022 à 03:27, Michael Ellerman a écrit :
>> Christophe Leroy <christophe.leroy at csgroup.eu> writes:
>>> Le 18/03/2022 à 13:26, Peter Zijlstra a écrit :
>>>> On Fri, Mar 18, 2022 at 04:21:40PM +0530, Sathvika Vasireddy wrote:
>>>>> This patch adds powerpc specific functions required for
>>>>> 'objtool mcount' to work, and enables mcount for ppc.
>>>>
>>>> I would love to see more objtool enablement for Power :-)
>>>
>>> I have not received this series and I can't see it on powerpc patchwork
>>> either (https://patchwork.ozlabs.org/project/linuxppc-dev/list/)
>>>
>>> Did you send it to linuxppc-dev list ? If not can you resend it there ?
>>
>> It is there, might have been delayed?
>>
>> http://patchwork.ozlabs.org/project/linuxppc-dev/list/?series=291129
>>
>> There are some CI failures.
>>
> 
> On PPC32 I get :
> 
> [    0.000000] ftrace: No functions to be traced?
> 
> Without this series I get:
> 
> [    0.000000] ftrace: allocating 22508 entries in 17 pages
> [    0.000000] ftrace: allocated 17 pages with 2 groups
> 
> 


ppc64_defconfig on QEMU:

[    0.000000][    T0] ftrace: No functions to be traced?

Without your series:

[    0.000000][    T0] ftrace: allocating 38750 entries in 15 pages
[    0.000000][    T0] ftrace: allocated 15 pages with 4 groups
[    0.000000][    T0] trace event string verifier disabled