diff options
Diffstat (limited to 'arch/x86/kernel/cpu/resctrl/monitor.c')
-rw-r--r-- | arch/x86/kernel/cpu/resctrl/monitor.c | 35 |
1 files changed, 34 insertions, 1 deletions
diff --git a/arch/x86/kernel/cpu/resctrl/monitor.c b/arch/x86/kernel/cpu/resctrl/monitor.c index 2d81b6cd9632..e9755143492b 100644 --- a/arch/x86/kernel/cpu/resctrl/monitor.c +++ b/arch/x86/kernel/cpu/resctrl/monitor.c @@ -137,7 +137,37 @@ static inline struct rmid_entry *__rmid_entry(u32 rmid) return entry; } -static u64 __rmid_read(u32 rmid, u32 eventid) +static struct arch_mbm_state *get_arch_mbm_state(struct rdt_hw_domain *hw_dom, + u32 rmid, + enum resctrl_event_id eventid) +{ + switch (eventid) { + case QOS_L3_OCCUP_EVENT_ID: + return NULL; + case QOS_L3_MBM_TOTAL_EVENT_ID: + return &hw_dom->arch_mbm_total[rmid]; + case QOS_L3_MBM_LOCAL_EVENT_ID: + return &hw_dom->arch_mbm_local[rmid]; + } + + /* Never expect to get here */ + WARN_ON_ONCE(1); + + return NULL; +} + +void resctrl_arch_reset_rmid(struct rdt_resource *r, struct rdt_domain *d, + u32 rmid, enum resctrl_event_id eventid) +{ + struct rdt_hw_domain *hw_dom = resctrl_to_arch_dom(d); + struct arch_mbm_state *am; + + am = get_arch_mbm_state(hw_dom, rmid, eventid); + if (am) + memset(am, 0, sizeof(*am)); +} + +static u64 __rmid_read(u32 rmid, enum resctrl_event_id eventid) { u64 val; @@ -291,6 +321,9 @@ static u64 __mon_event_count(u32 rmid, struct rmid_read *rr) struct mbm_state *m; u64 chunks, tval; + if (rr->first) + resctrl_arch_reset_rmid(rr->r, rr->d, rmid, rr->evtid); + tval = __rmid_read(rmid, rr->evtid); if (tval & (RMID_VAL_ERROR | RMID_VAL_UNAVAIL)) { return tval; |