[PATCH v5 07/16] RISC-V: Move T-Head PMU to CPU feature alternative framework

[Conor Dooley]

On Wed, Dec 13, 2023 at 03:02:52PM +0800, Yu Chien Peter Lin wrote:
> The custom PMU extension aims to support perf event sampling prior
> to the ratification of Sscofpmf. Instead of diverting the bits and
> register reserved for future standard, a set of custom registers is
> added.  Hence, we may consider it as a CPU feature rather than an
> erratum.
> 
> T-Head cores need to append "xtheadpmu" to the riscv,isa-extensions
> for each cpu node in device tree, and enable CONFIG_THEAD_CUSTOM_PMU
> for proper functioning as of this commit.
> 
> Signed-off-by: Yu Chien Peter Lin <peterlin at andestech.com>
> Reviewed-by: Guo Ren <guoren at kernel.org>

Reviewed-by: Conor Dooley <conor.dooley at microchip.com>

Cheers,
Conor.
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