[PATCH] x86/resctrl: Fix typos in mba_sc mount option

[PATCH] x86/resctrl: Fix typos in mba_sc mount option

[Xiaochen Shen]

With mount option "mba_MBps", we could enable MBA Software Controller
(mba_sc) to specify MBA memory bandwidth in unit MBps (Mega Bytes per
second). See details in Documentation/x86/resctrl_ui.txt.

Commit 23bf1b6be9c2 ("kernfs, sysfs, cgroup, intel_rdt: Support
fs_context") changes the mount option from "mba_MBps" to "mba_mpbs" by
mistake.

Change back from "mba_mpbs" to "mba_MBps", and rename Opt_mba_mpbs to
Opt_mba_mbps.

Fixes: 23bf1b6be9c2 ("kernfs, sysfs, cgroup, intel_rdt: Support fs_context")
Signed-off-by: Xiaochen Shen <xiaochen.shen@intel.com>
---
 arch/x86/kernel/cpu/resctrl/rdtgroup.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/arch/x86/kernel/cpu/resctrl/rdtgroup.c b/arch/x86/kernel/cpu/resctrl/rdtgroup.c
index 399601e..54b9eef 100644
--- a/arch/x86/kernel/cpu/resctrl/rdtgroup.c
+++ b/arch/x86/kernel/cpu/resctrl/rdtgroup.c
@@ -2039,14 +2039,14 @@ static int rdt_get_tree(struct fs_context *fc)
 enum rdt_param {
 	Opt_cdp,
 	Opt_cdpl2,
-	Opt_mba_mpbs,
+	Opt_mba_mbps,
 	nr__rdt_params
 };
 
 static const struct fs_parameter_spec rdt_param_specs[] = {
 	fsparam_flag("cdp",		Opt_cdp),
 	fsparam_flag("cdpl2",		Opt_cdpl2),
-	fsparam_flag("mba_mpbs",	Opt_mba_mpbs),
+	fsparam_flag("mba_MBps",	Opt_mba_mbps),
 	{}
 };
 
@@ -2072,7 +2072,7 @@ static int rdt_parse_param(struct fs_context *fc, struct fs_parameter *param)
 	case Opt_cdpl2:
 		ctx->enable_cdpl2 = true;
 		return 0;
-	case Opt_mba_mpbs:
+	case Opt_mba_mbps:
 		if (boot_cpu_data.x86_vendor != X86_VENDOR_INTEL)
 			return -EINVAL;
 		ctx->enable_mba_mbps = true;
-- 
1.8.3.1

[tip:x86/urgent] x86/resctrl: Fix typos in the mba_sc mount option

[tip-bot for Xiaochen Shen]

Commit-ID:  faa3604eda325588451c9c1eb4c8a8d04c1cd633
Gitweb:     https://git.kernel.org/tip/faa3604eda325588451c9c1eb4c8a8d04c1cd633
Author:     Xiaochen Shen <xiaochen.shen@intel.com>
AuthorDate: Sat, 30 Mar 2019 05:50:38 +0800
Committer:  Borislav Petkov <bp@suse.de>
CommitDate: Mon, 1 Apr 2019 18:45:27 +0200

x86/resctrl: Fix typos in the mba_sc mount option

The user can control the MBA memory bandwidth in MBps (Mega
Bytes per second) units of the MBA Software Controller (mba_sc)
by using the "mba_MBps" mount option. For details, see
Documentation/x86/resctrl_ui.txt.

However, commit

  23bf1b6be9c2 ("kernfs, sysfs, cgroup, intel_rdt: Support fs_context")

changed the mount option name from "mba_MBps" to "mba_mpbs" by mistake.

Change it back from to "mba_MBps" because it is user-visible, and
correct "Opt_mba_mpbs" spelling to "Opt_mba_mbps".

 [ bp: massage commit message. ]

Fixes: 23bf1b6be9c2 ("kernfs, sysfs, cgroup, intel_rdt: Support fs_context")
Signed-off-by: Xiaochen Shen <xiaochen.shen@intel.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Cc: dhowells@redhat.com
Cc: Fenghua Yu <fenghua.yu@intel.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: pei.p.jia@intel.com
Cc: Reinette Chatre <reinette.chatre@intel.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Tony Luck <tony.luck@intel.com>
Cc: x86-ml <x86@kernel.org>
Link: https://lkml.kernel.org/r/1553896238-22130-1-git-send-email-xiaochen.shen@intel.com
---
 arch/x86/kernel/cpu/resctrl/rdtgroup.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/arch/x86/kernel/cpu/resctrl/rdtgroup.c b/arch/x86/kernel/cpu/resctrl/rdtgroup.c
index 399601eda8e4..54b9eef3eea9 100644
--- a/arch/x86/kernel/cpu/resctrl/rdtgroup.c
+++ b/arch/x86/kernel/cpu/resctrl/rdtgroup.c
@@ -2039,14 +2039,14 @@ out:
 enum rdt_param {
 	Opt_cdp,
 	Opt_cdpl2,
-	Opt_mba_mpbs,
+	Opt_mba_mbps,
 	nr__rdt_params
 };
 
 static const struct fs_parameter_spec rdt_param_specs[] = {
 	fsparam_flag("cdp",		Opt_cdp),
 	fsparam_flag("cdpl2",		Opt_cdpl2),
-	fsparam_flag("mba_mpbs",	Opt_mba_mpbs),
+	fsparam_flag("mba_MBps",	Opt_mba_mbps),
 	{}
 };
 
@@ -2072,7 +2072,7 @@ static int rdt_parse_param(struct fs_context *fc, struct fs_parameter *param)
 	case Opt_cdpl2:
 		ctx->enable_cdpl2 = true;
 		return 0;
-	case Opt_mba_mpbs:
+	case Opt_mba_mbps:
 		if (boot_cpu_data.x86_vendor != X86_VENDOR_INTEL)
 			return -EINVAL;
 		ctx->enable_mba_mbps = true;