Commit a76f65c8 authored by Babu Moger's avatar Babu Moger Committed by Borislav Petkov (AMD)
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x86/resctrl: Include new features in command line options 



Add the command line options to enable or disable the new resctrl features:

smba: Slow Memory Bandwidth Allocation
bmec: Bandwidth Monitor Event Configuration.

Signed-off-by: default avatarBabu Moger <babu.moger@amd.com>
Signed-off-by: default avatarBorislav Petkov (AMD) <bp@alien8.de>
Reviewed-by: default avatarReinette Chatre <reinette.chatre@intel.com>
Link: https://lore.kernel.org/r/20230113152039.770054-6-babu.moger@amd.com
parent 78335aac

Documentation/admin-guide/kernel-parameters.txt

+1 −1
Original line number Diff line number Diff line
@@ -5221,7 +5221,7 @@ 
	rdt=		[HW,X86,RDT]

			Turn on/off individual RDT features. List is:

			cmt, mbmtotal, mbmlocal, l3cat, l3cdp, l2cat, l2cdp,

			mba.

			mba, smba, bmec.

			E.g. to turn on cmt and turn off mba use:

				rdt=cmt,!mba

arch/x86/kernel/cpu/resctrl/core.c

+4 −0
Original line number Diff line number Diff line
@@ -659,6 +659,8 @@ enum { 
	RDT_FLAG_L2_CAT,

	RDT_FLAG_L2_CDP,

	RDT_FLAG_MBA,

	RDT_FLAG_SMBA,

	RDT_FLAG_BMEC,

};



#define RDT_OPT(idx, n, f)	\
@@ -682,6 +684,8 @@ static struct rdt_options rdt_options[] __initdata = { 
	RDT_OPT(RDT_FLAG_L2_CAT,    "l2cat",	X86_FEATURE_CAT_L2),

	RDT_OPT(RDT_FLAG_L2_CDP,    "l2cdp",	X86_FEATURE_CDP_L2),

	RDT_OPT(RDT_FLAG_MBA,	    "mba",	X86_FEATURE_MBA),

	RDT_OPT(RDT_FLAG_SMBA,	    "smba",	X86_FEATURE_SMBA),

	RDT_OPT(RDT_FLAG_BMEC,	    "bmec",	X86_FEATURE_BMEC),

};

#define NUM_RDT_OPTIONS ARRAY_SIZE(rdt_options)