linux-kernel - [tip: x86/cache] x86/resctrl: Simplify rftype flag definitions

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Date:   Tue, 17 Oct 2023 12:18:02 -0000
From:   "tip-bot2 for Babu Moger" <tip-bot2@...utronix.de>
To:     linux-tip-commits@...r.kernel.org
Cc:     Babu Moger <babu.moger@....com>,
        "Borislav Petkov (AMD)" <bp@...en8.de>,
        Peter Newman <peternewman@...gle.com>,
        Tan Shaopeng <tan.shaopeng@...fujitsu.com>,
        Fenghua Yu <fenghua.yu@...el.com>,
        Reinette Chatre <reinette.chatre@...el.com>,
        ilpo.jarvinen@...ux.intel.com, x86@...nel.org,
        linux-kernel@...r.kernel.org
Subject: [tip: x86/cache] x86/resctrl: Simplify rftype flag definitions

The following commit has been merged into the x86/cache branch of tip:

Commit-ID:     6846dc1a31d1894a7acf52d8442fe73b34091022
Gitweb:        https://git.kernel.org/tip/6846dc1a31d1894a7acf52d8442fe73b34091022
Author:        Babu Moger <babu.moger@....com>
AuthorDate:    Tue, 03 Oct 2023 18:54:22 -05:00
Committer:     Borislav Petkov (AMD) <bp@...en8.de>
CommitterDate: Tue, 17 Oct 2023 11:51:16 +02:00

x86/resctrl: Simplify rftype flag definitions

The rftype flags are bitmaps used for adding files under the resctrl
filesystem. Some of these bitmap defines have one extra level of
indirection which is not necessary.

Drop the RF_* defines and simplify the macros.

  [ bp: Massage commit message. ]

Signed-off-by: Babu Moger <babu.moger@....com>
Signed-off-by: Borislav Petkov (AMD) <bp@...en8.de>
Reviewed-by: Peter Newman <peternewman@...gle.com>
Reviewed-by: Tan Shaopeng <tan.shaopeng@...fujitsu.com>
Reviewed-by: Fenghua Yu <fenghua.yu@...el.com>
Reviewed-by: Reinette Chatre <reinette.chatre@...el.com>
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@...ux.intel.com>
Tested-by: Peter Newman <peternewman@...gle.com>
Tested-by: Tan Shaopeng <tan.shaopeng@...fujitsu.com>
Link: https://lore.kernel.org/r/20231017002308.134480-3-babu.moger@amd.com
---
 arch/x86/kernel/cpu/resctrl/internal.h |  9 +++------
 arch/x86/kernel/cpu/resctrl/rdtgroup.c |  6 +++++-
 2 files changed, 8 insertions(+), 7 deletions(-)

diff --git a/arch/x86/kernel/cpu/resctrl/internal.h b/arch/x86/kernel/cpu/resctrl/internal.h
index c47ef2f..0ad970c 100644
--- a/arch/x86/kernel/cpu/resctrl/internal.h
+++ b/arch/x86/kernel/cpu/resctrl/internal.h
@@ -243,12 +243,9 @@ struct rdtgroup {
  */
 #define RFTYPE_INFO			BIT(0)
 #define RFTYPE_BASE			BIT(1)
-#define RF_CTRLSHIFT			4
-#define RF_MONSHIFT			5
-#define RF_TOPSHIFT			6
-#define RFTYPE_CTRL			BIT(RF_CTRLSHIFT)
-#define RFTYPE_MON			BIT(RF_MONSHIFT)
-#define RFTYPE_TOP			BIT(RF_TOPSHIFT)
+#define RFTYPE_CTRL			BIT(4)
+#define RFTYPE_MON			BIT(5)
+#define RFTYPE_TOP			BIT(6)
 #define RFTYPE_RES_CACHE		BIT(8)
 #define RFTYPE_RES_MB			BIT(9)
 #define RF_CTRL_INFO			(RFTYPE_INFO | RFTYPE_CTRL)
diff --git a/arch/x86/kernel/cpu/resctrl/rdtgroup.c b/arch/x86/kernel/cpu/resctrl/rdtgroup.c
index fe23969..09141f1 100644
--- a/arch/x86/kernel/cpu/resctrl/rdtgroup.c
+++ b/arch/x86/kernel/cpu/resctrl/rdtgroup.c
@@ -3260,7 +3260,11 @@ static int mkdir_rdt_prepare(struct kernfs_node *parent_kn,
 		goto out_destroy;
 	}
 
-	files = RFTYPE_BASE | BIT(RF_CTRLSHIFT + rtype);
+	if (rtype == RDTCTRL_GROUP)
+		files = RFTYPE_BASE | RFTYPE_CTRL;
+	else
+		files = RFTYPE_BASE | RFTYPE_MON;
+
 	ret = rdtgroup_add_files(kn, files);
 	if (ret) {
 		rdt_last_cmd_puts("kernfs fill error\n");