Exporting cpu instruction set to kernel .config file

[FMDF]

On Thu, 3 Mar 2022, 19:43 FMDF, <fmdefrancesco at gmail.com> wrote:

> On Thu, 3 Mar 2022, 16:21 Guddla Rupesh, <rupeshforu3 at gmail.com> wrote:
>
> I think that all the kernels shipped by distros are not considering latest
>> processors instruction set. I think that even windows is doing the same.
>>
>> If opencl is detected properly any application can have improvement in
>> performance about 10 percent.
>>
>> I can't find any option to set opencl in the Linux kernel config file or
>> in any of the kernel source files.
>>
>> Atleast I am lucky to select option core 2 in the main .config file of
>> kernel.
>>
>> Finally my request is there any way to export instruct set of my cpu to
>> the kernel configuration and so after compilation my video encoding takes
>> less time than previous.
>>
>> If it's a difficult task leave it and if it's possible try to suggest how
>> to do so.
>>
>
> You have not read Torin's and my replies. I can assure you that Linux uses
> ALL the latest extensions of Intel and AMD instruction sets.
>
> And you didn't even read the code that Torin pointed out to you.
>
> Personally I have written documentation for various x86-64 newer
> subsystem. There is nothing of those ISA that Linux kernel and OS don't
> support. The fact that the configuration option is simply called
> CONFIG_CORE2 (or whatever) has no meaning at all.
>
> If you can, please attach GDB to executing code or read the Assembly
> output by GCC and see yourself what instructions Linux uses in the
> subsystems of your choice.
>
> Regards,
>
> Fabio M. De Francesco
>
>>
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