Add the command line options to enable or disable the new resctrl feature
L3 Smart Data Cache Injection Allocation Enforcement (SDCIAE).
Signed-off-by: Babu Moger <babu.moger@xxxxxxx>
---
v7: No changes.
v6: No changes.
v5: No changes.
v4: No changes.
v3: No changes.
v2: No changes.
---
Documentation/admin-guide/kernel-parameters.txt | 2 +-
arch/x86/kernel/cpu/resctrl/core.c | 2 ++
2 files changed, 3 insertions(+), 1 deletion(-)
diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt
index 07e22ba5bfe3..aa1c5948bec2 100644
--- a/Documentation/admin-guide/kernel-parameters.txt
+++ b/Documentation/admin-guide/kernel-parameters.txt
@@ -6066,7 +6066,7 @@
rdt= [HW,X86,RDT]
Turn on/off individual RDT features. List is:
cmt, mbmtotal, mbmlocal, l3cat, l3cdp, l2cat, l2cdp,
- mba, smba, bmec.
+ mba, smba, bmec, sdciae.
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 187d527ef73b..f6d84882cc4e 100644
--- a/arch/x86/kernel/cpu/resctrl/core.c
+++ b/arch/x86/kernel/cpu/resctrl/core.c
@@ -707,6 +707,7 @@ enum {
RDT_FLAG_MBA,
RDT_FLAG_SMBA,
RDT_FLAG_BMEC,
+ RDT_FLAG_SDCIAE,
};
#define RDT_OPT(idx, n, f) \
@@ -732,6 +733,7 @@ static struct rdt_options rdt_options[] __ro_after_init = {
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),
+ RDT_OPT(RDT_FLAG_SDCIAE, "sdciae", X86_FEATURE_SDCIAE),
};
#define NUM_RDT_OPTIONS ARRAY_SIZE(rdt_options)
--
2.34.1
