diff options
Diffstat (limited to 'arch/x86')
| -rw-r--r-- | arch/x86/kernel/cpu/resctrl/ctrlmondata.c | 6 | ||||
| -rw-r--r-- | arch/x86/kernel/cpu/resctrl/internal.h | 4 | ||||
| -rw-r--r-- | arch/x86/kernel/cpu/resctrl/monitor.c | 24 |
3 files changed, 15 insertions, 19 deletions
diff --git a/arch/x86/kernel/cpu/resctrl/ctrlmondata.c b/arch/x86/kernel/cpu/resctrl/ctrlmondata.c index 42a1abb378f0..1dafbdc5ac31 100644 --- a/arch/x86/kernel/cpu/resctrl/ctrlmondata.c +++ b/arch/x86/kernel/cpu/resctrl/ctrlmondata.c @@ -549,7 +549,6 @@ void mon_event_read(struct rmid_read *rr, struct rdt_resource *r, int rdtgroup_mondata_show(struct seq_file *m, void *arg) { struct kernfs_open_file *of = m->private; - struct rdt_hw_resource *hw_res; u32 resid, evtid, domid; struct rdtgroup *rdtgrp; struct rdt_resource *r; @@ -569,8 +568,7 @@ int rdtgroup_mondata_show(struct seq_file *m, void *arg) domid = md.u.domid; evtid = md.u.evtid; - hw_res = &rdt_resources_all[resid]; - r = &hw_res->r_resctrl; + r = &rdt_resources_all[resid].r_resctrl; d = rdt_find_domain(r, domid, NULL); if (IS_ERR_OR_NULL(d)) { ret = -ENOENT; @@ -584,7 +582,7 @@ int rdtgroup_mondata_show(struct seq_file *m, void *arg) else if (rr.err == -EINVAL) seq_puts(m, "Unavailable\n"); else - seq_printf(m, "%llu\n", rr.val * hw_res->mon_scale); + seq_printf(m, "%llu\n", rr.val); out: rdtgroup_kn_unlock(of->kn); diff --git a/arch/x86/kernel/cpu/resctrl/internal.h b/arch/x86/kernel/cpu/resctrl/internal.h index c05e9b7cf77a..5f7128686cfd 100644 --- a/arch/x86/kernel/cpu/resctrl/internal.h +++ b/arch/x86/kernel/cpu/resctrl/internal.h @@ -279,13 +279,13 @@ struct rftype { /** * struct mbm_state - status for each MBM counter in each domain - * @prev_bw_chunks: Previous chunks value read for bandwidth calculation + * @prev_bw_bytes: Previous bytes value read for bandwidth calculation * @prev_bw: The most recent bandwidth in MBps * @delta_bw: Difference between the current and previous bandwidth * @delta_comp: Indicates whether to compute the delta_bw */ struct mbm_state { - u64 prev_bw_chunks; + u64 prev_bw_bytes; u32 prev_bw; u32 delta_bw; bool delta_comp; diff --git a/arch/x86/kernel/cpu/resctrl/monitor.c b/arch/x86/kernel/cpu/resctrl/monitor.c index 8d15568d7121..efe0c30d3a12 100644 --- a/arch/x86/kernel/cpu/resctrl/monitor.c +++ b/arch/x86/kernel/cpu/resctrl/monitor.c @@ -16,6 +16,7 @@ */ #include <linux/module.h> +#include <linux/sizes.h> #include <linux/slab.h> #include <asm/cpu_device_id.h> @@ -189,7 +190,7 @@ int resctrl_arch_rmid_read(struct rdt_resource *r, struct rdt_domain *d, struct rdt_hw_resource *hw_res = resctrl_to_arch_res(r); struct rdt_hw_domain *hw_dom = resctrl_to_arch_dom(d); struct arch_mbm_state *am; - u64 msr_val; + u64 msr_val, chunks; if (!cpumask_test_cpu(smp_processor_id(), &d->cpu_mask)) return -EINVAL; @@ -214,12 +215,14 @@ int resctrl_arch_rmid_read(struct rdt_resource *r, struct rdt_domain *d, if (am) { am->chunks += mbm_overflow_count(am->prev_msr, msr_val, hw_res->mbm_width); - *val = get_corrected_mbm_count(rmid, am->chunks); + chunks = get_corrected_mbm_count(rmid, am->chunks); am->prev_msr = msr_val; } else { - *val = msr_val; + chunks = msr_val; } + *val = chunks * hw_res->mon_scale; + return 0; } @@ -232,7 +235,6 @@ int resctrl_arch_rmid_read(struct rdt_resource *r, struct rdt_domain *d, void __check_limbo(struct rdt_domain *d, bool force_free) { struct rdt_resource *r = &rdt_resources_all[RDT_RESOURCE_L3].r_resctrl; - struct rdt_hw_resource *hw_res = resctrl_to_arch_res(r); struct rmid_entry *entry; u32 crmid = 1, nrmid; bool rmid_dirty; @@ -255,7 +257,6 @@ void __check_limbo(struct rdt_domain *d, bool force_free) QOS_L3_OCCUP_EVENT_ID, &val)) { rmid_dirty = true; } else { - val *= hw_res->mon_scale; rmid_dirty = (val >= resctrl_rmid_realloc_threshold); } @@ -299,7 +300,6 @@ int alloc_rmid(void) static void add_rmid_to_limbo(struct rmid_entry *entry) { struct rdt_resource *r = &rdt_resources_all[RDT_RESOURCE_L3].r_resctrl; - struct rdt_hw_resource *hw_res = resctrl_to_arch_res(r); struct rdt_domain *d; int cpu, err; u64 val = 0; @@ -311,7 +311,6 @@ static void add_rmid_to_limbo(struct rmid_entry *entry) err = resctrl_arch_rmid_read(r, d, entry->rmid, QOS_L3_OCCUP_EVENT_ID, &val); - val *= hw_res->mon_scale; if (err || val <= resctrl_rmid_realloc_threshold) continue; } @@ -403,15 +402,14 @@ static int __mon_event_count(u32 rmid, struct rmid_read *rr) */ static void mbm_bw_count(u32 rmid, struct rmid_read *rr) { - struct rdt_hw_resource *hw_res = resctrl_to_arch_res(rr->r); struct mbm_state *m = &rr->d->mbm_local[rmid]; - u64 cur_bw, chunks, cur_chunks; + u64 cur_bw, bytes, cur_bytes; - cur_chunks = rr->val; - chunks = cur_chunks - m->prev_bw_chunks; - m->prev_bw_chunks = cur_chunks; + cur_bytes = rr->val; + bytes = cur_bytes - m->prev_bw_bytes; + m->prev_bw_bytes = cur_bytes; - cur_bw = (chunks * hw_res->mon_scale) >> 20; + cur_bw = bytes / SZ_1M; if (m->delta_comp) m->delta_bw = abs(cur_bw - m->prev_bw); |