Commit 3e9e723f authored by James Morse's avatar James Morse Committed by Zeng Heng
Browse files

arm_mpam: Add probe/remove for mpam msc driver and kbuild boiler plate 

maillist inclusion
category: feature
bugzilla: https://gitee.com/openeuler/kernel/issues/I8T2RT

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/morse/linux.git/log/?h=mpam/snapshot/v6.7-rc2



---------------------------

Probing MPAM is convoluted. MSCs that are integrated with a CPU may
only be accessible from those CPUs, and they may not be online.
Touching the hardware early is pointless as MPAM can't be used until
the system-wide common values for num_partid and num_pmg have been
discovered.

Start with driver probe/remove and mapping the MSC.

Signed-off-by: default avatarJames Morse <james.morse@arm.com>
Signed-off-by: default avatarZeng Heng <zengheng4@huawei.com>
parent c21dc717

arch/arm64/Kconfig

+1 −0
Original line number Diff line number Diff line
@@ -2059,6 +2059,7 @@ config ARM64_TLB_RANGE 
config ARM64_MPAM

	bool "Enable support for MPAM"

	select ACPI_MPAM if ACPI

	select ARM_CPU_RESCTRL

	help

	  Memory Partitioning and Monitoring is an optional extension

	  that allows the CPUs to mark load and store transactions with

drivers/platform/Kconfig

+2 −0
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@@ -9,6 +9,8 @@ source "drivers/platform/chrome/Kconfig" 


source "drivers/platform/mellanox/Kconfig"



source "drivers/platform/mpam/Kconfig"



source "drivers/platform/olpc/Kconfig"



source "drivers/platform/surface/Kconfig"

drivers/platform/Makefile

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@@ -11,3 +11,4 @@ obj-$(CONFIG_OLPC_EC) += olpc/ 
obj-$(CONFIG_GOLDFISH)		+= goldfish/

obj-$(CONFIG_CHROME_PLATFORMS)	+= chrome/

obj-$(CONFIG_SURFACE_PLATFORMS)	+= surface/

obj-$(CONFIG_ARM_CPU_RESCTRL)	+= mpam/

drivers/platform/mpam/Kconfig

0 → 100644
+6 −0
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# Confusingly, this is everything but the CPU bits of MPAM. CPU here means

# CPU resources, not containers or cgroups etc.

config ARM_CPU_RESCTRL

	bool

	depends on ARM64

	select RESCTRL_RMID_DEPENDS_ON_CLOSID

drivers/platform/mpam/Makefile

0 → 100644
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obj-$(CONFIG_ARM_CPU_RESCTRL) += mpam_devices.o