[PATCH v13 02/10] x86/resctrl: Simplify rftype flag definitions

From: Babu Moger
Date: Fri Oct 13 2023 - 16:26:29 EST


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

Make them all direct definition to be consistent and easier to read.

Signed-off-by: Babu Moger <babu.moger@xxxxxxx>
Tested-by: Peter Newman <peternewman@xxxxxxxxxx>
Reviewed-by: Peter Newman <peternewman@xxxxxxxxxx>
Tested-by: Tan Shaopeng <tan.shaopeng@xxxxxxxxxxxxxx>
Reviewed-by: Tan Shaopeng <tan.shaopeng@xxxxxxxxxxxxxx>
Reviewed-by: Fenghua Yu <fenghua.yu@xxxxxxxxx>
Reviewed-by: Reinette Chatre <reinette.chatre@xxxxxxxxx>
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@xxxxxxxxxxxxxxx>
---
v13: No changes

v12: No changes
---
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 c47ef2f13e8e..0ad970c5c867 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 fe239691628a..09141f1f0b96 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");
--
2.34.1