diff options
Diffstat (limited to 'arch/x86/kernel/cpu/intel_rdt.h')
| -rw-r--r-- | arch/x86/kernel/cpu/intel_rdt.h | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/arch/x86/kernel/cpu/intel_rdt.h b/arch/x86/kernel/cpu/intel_rdt.h index 2660d15d1712..2137d5e55803 100644 --- a/arch/x86/kernel/cpu/intel_rdt.h +++ b/arch/x86/kernel/cpu/intel_rdt.h @@ -19,6 +19,9 @@ #define QOS_L3_OCCUP_EVENT_ID 0x01 #define QOS_L3_MBM_TOTAL_EVENT_ID 0x02 #define QOS_L3_MBM_LOCAL_EVENT_ID 0x03 + +#define MBM_CNTR_WIDTH 24 + #define RMID_VAL_ERROR BIT_ULL(63) #define RMID_VAL_UNAVAIL BIT_ULL(62) @@ -50,6 +53,7 @@ union mon_data_bits { struct rmid_read { struct rdtgroup *rgrp; + struct rdt_domain *d; int evtid; u64 val; }; @@ -160,12 +164,24 @@ struct rftype { }; /** + * struct mbm_state - status for each MBM counter in each domain + * @chunks: Total data moved (multiply by rdt_group.mon_scale to get bytes) + * @prev_msr Value of IA32_QM_CTR for this RMID last time we read it + */ +struct mbm_state { + u64 chunks; + u64 prev_msr; +}; + +/** * struct rdt_domain - group of cpus sharing an RDT resource * @list: all instances of this resource * @id: unique id for this instance * @cpu_mask: which cpus share this resource * @rmid_busy_llc: * bitmap of which limbo RMIDs are above threshold + * @mbm_total: saved state for MBM total bandwidth + * @mbm_local: saved state for MBM local bandwidth * @ctrl_val: array of cache or mem ctrl values (indexed by CLOSID) * @new_ctrl: new ctrl value to be loaded * @have_new_ctrl: did user provide new_ctrl for this domain @@ -175,6 +191,8 @@ struct rdt_domain { int id; struct cpumask cpu_mask; unsigned long *rmid_busy_llc; + struct mbm_state *mbm_total; + struct mbm_state *mbm_local; u32 *ctrl_val; u32 new_ctrl; bool have_new_ctrl; @@ -230,6 +248,21 @@ static inline bool is_llc_occupancy_enabled(void) return (rdt_mon_features & (1 << QOS_L3_OCCUP_EVENT_ID)); } +static inline bool is_mbm_total_enabled(void) +{ + return (rdt_mon_features & (1 << QOS_L3_MBM_TOTAL_EVENT_ID)); +} + +static inline bool is_mbm_local_enabled(void) +{ + return (rdt_mon_features & (1 << QOS_L3_MBM_LOCAL_EVENT_ID)); +} + +static inline bool is_mbm_enabled(void) +{ + return (is_mbm_total_enabled() || is_mbm_local_enabled()); +} + /** * struct rdt_resource - attributes of an RDT resource * @rid: The index of the resource |