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From: Babu Moger <babu.moger@amd.com>
To: <corbet@lwn.net>, <reinette.chatre@intel.com>,
	<tglx@linutronix.de>, <mingo@redhat.com>, <bp@alien8.de>
Cc: <fenghua.yu@intel.com>, <dave.hansen@linux.intel.com>,
	<x86@kernel.org>, <hpa@zytor.com>, <paulmck@kernel.org>,
	<akpm@linux-foundation.org>, <quic_neeraju@quicinc.com>,
	<rdunlap@infradead.org>, <damien.lemoal@opensource.wdc.com>,
	<songmuchun@bytedance.com>, <peterz@infradead.org>,
	<jpoimboe@kernel.org>, <pbonzini@redhat.com>,
	<babu.moger@amd.com>, <chang.seok.bae@intel.com>,
	<pawan.kumar.gupta@linux.intel.com>, <jmattson@google.com>,
	<daniel.sneddon@linux.intel.com>, <sandipan.das@amd.com>,
	<tony.luck@intel.com>, <james.morse@arm.com>,
	<linux-doc@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
	<bagasdotme@gmail.com>, <eranian@google.com>
Subject: [PATCH v7 04/12] x86/resctrl: Include new features in command line options
Date: Mon, 17 Oct 2022 17:26:32 -0500	[thread overview]
Message-ID: <166604559240.5345.4467065841093036343.stgit@bmoger-ubuntu> (raw)
In-Reply-To: <166604543832.5345.9696970469830919982.stgit@bmoger-ubuntu>

Add the command line options to disable the new features.
smba : Slow Memory Bandwidth Allocation
bmec : Bandwidth Monitor Event Configuration.

Signed-off-by: Babu Moger <babu.moger@amd.com>
---
 Documentation/admin-guide/kernel-parameters.txt |    2 +-
 arch/x86/kernel/cpu/resctrl/core.c              |    4 ++++
 2 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt
index a465d5242774..f3f0870144fb 100644
--- a/Documentation/admin-guide/kernel-parameters.txt
+++ b/Documentation/admin-guide/kernel-parameters.txt
@@ -5190,7 +5190,7 @@
 	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
 
diff --git a/arch/x86/kernel/cpu/resctrl/core.c b/arch/x86/kernel/cpu/resctrl/core.c
index efffce716f3a..c7561c613209 100644
--- a/arch/x86/kernel/cpu/resctrl/core.c
+++ b/arch/x86/kernel/cpu/resctrl/core.c
@@ -665,6 +665,8 @@ enum {
 	RDT_FLAG_L2_CAT,
 	RDT_FLAG_L2_CDP,
 	RDT_FLAG_MBA,
+	RDT_FLAG_SMBA,
+	RDT_FLAG_BMEC,
 };
 
 #define RDT_OPT(idx, n, f)	\
@@ -688,6 +690,8 @@ 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)
 



  parent reply	other threads:[~2022-10-17 22:27 UTC|newest]

Thread overview: 30+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-10-17 22:25 [PATCH v7 00/12] x86/resctrl: Support for AMD QoS new features Babu Moger
2022-10-17 22:26 ` [PATCH v7 01/12] x86/cpufeatures: Add Slow Memory Bandwidth Allocation feature flag Babu Moger
2022-10-27 18:49   ` Reinette Chatre
2022-10-27 19:17     ` Moger, Babu
2022-10-17 22:26 ` [PATCH v7 02/12] x86/resctrl: Add a new resource type RDT_RESOURCE_SMBA Babu Moger
2022-10-17 22:26 ` [PATCH v7 03/12] x86/cpufeatures: Add Bandwidth Monitoring Event Configuration feature flag Babu Moger
2022-10-17 22:26 ` Babu Moger [this message]
2022-10-17 22:26 ` [PATCH v7 05/12] x86/resctrl: Detect and configure Slow Memory Bandwidth allocation Babu Moger
2022-10-25 23:43   ` Reinette Chatre
2022-10-26 19:07     ` Moger, Babu
2022-10-26 20:23       ` Reinette Chatre
2022-10-27 15:30         ` Moger, Babu
2022-10-27 18:37           ` Reinette Chatre
2022-10-28 15:16             ` Moger, Babu
2022-10-17 22:26 ` [PATCH v7 06/12] x86/resctrl: Introduce data structure to support monitor configuration Babu Moger
2022-10-25 23:45   ` Reinette Chatre
2022-10-26 19:25     ` Moger, Babu
2022-10-17 22:26 ` [PATCH v7 07/12] x86/resctrl: Add sysfs interface to read mbm_total_bytes event configuration Babu Moger
2022-10-25 23:47   ` Reinette Chatre
2022-10-26 19:36     ` Moger, Babu
2022-10-17 22:27 ` [PATCH v7 08/12] x86/resctrl: Add sysfs interface to read mbm_local_bytes " Babu Moger
2022-10-17 22:27 ` [PATCH v7 09/12] x86/resctrl: Add sysfs interface to write mbm_total_bytes " Babu Moger
2022-10-25 23:48   ` Reinette Chatre
2022-10-26 19:52     ` Moger, Babu
2022-10-17 22:27 ` [PATCH v7 10/12] x86/resctrl: Add sysfs interface to write mbm_local_bytes " Babu Moger
2022-10-17 22:27 ` [PATCH v7 11/12] x86/resctrl: Replace smp_call_function_many() with on_each_cpu_mask() Babu Moger
2022-10-17 22:27 ` [PATCH v7 12/12] Documentation/x86: Update resctrl.rst for new features Babu Moger
2022-10-18  3:24   ` Bagas Sanjaya
2022-10-25 23:50   ` Reinette Chatre
2022-10-26 20:00     ` Moger, Babu

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