[PATCH v4 6/8] riscv: Enable resctrl filesystem for Ssqosid

[Drew Fustini]

Make RISCV_CBQRI a user-selectable option (default y) that depends on
RISCV_ISA_SSQOSID, rather than having RISCV_ISA_SSQOSID select it
unconditionally. A user with Ssqosid hardware can now build a kernel
without the CBQRI resctrl support if they do not want it, while the
default keeps it enabled.

RISCV_CBQRI selects ARCH_HAS_CPU_RESCTRL, which makes RESCTRL_FS
available on RISC-V, since resctrl is only meaningful when the CBQRI
core that backs it is built.

The resctrl filesystem integration is gated separately by
RISCV_CBQRI_RESCTRL_FS, a silent option that defaults to y when both
RISCV_CBQRI and RESCTRL_FS are enabled. Enabling the resctrl filesystem
itself stays a user choice via the standard fs/Kconfig MISC_FILESYSTEMS
menu.

Signed-off-by: Drew Fustini <fustini at kernel.org>
---
 drivers/resctrl/Kconfig | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/resctrl/Kconfig b/drivers/resctrl/Kconfig
index f8566c003d49..68b4124df396 100644
--- a/drivers/resctrl/Kconfig
+++ b/drivers/resctrl/Kconfig
@@ -33,6 +33,8 @@ config ARM64_MPAM_RESCTRL_FS
 menuconfig RISCV_CBQRI
 	bool "RISC-V CBQRI support"
 	depends on RISCV && RISCV_ISA_SSQOSID
+	select ARCH_HAS_CPU_RESCTRL
+	default y
 	help
 	  Capacity and Bandwidth QoS Register Interface (CBQRI) support for
 	  RISC-V cache QoS resources. CBQRI exposes cache capacity

-- 
2.43.0