diff options
Diffstat (limited to 'arch/x86/kernel/cpu/resctrl/ctrlmondata.c')
-rw-r--r-- | arch/x86/kernel/cpu/resctrl/ctrlmondata.c | 40 |
1 files changed, 8 insertions, 32 deletions
diff --git a/arch/x86/kernel/cpu/resctrl/ctrlmondata.c b/arch/x86/kernel/cpu/resctrl/ctrlmondata.c index 7997b47743..b7291f6039 100644 --- a/arch/x86/kernel/cpu/resctrl/ctrlmondata.c +++ b/arch/x86/kernel/cpu/resctrl/ctrlmondata.c @@ -272,22 +272,6 @@ static u32 get_config_index(u32 closid, enum resctrl_conf_type type) } } -static bool apply_config(struct rdt_hw_domain *hw_dom, - struct resctrl_staged_config *cfg, u32 idx, - cpumask_var_t cpu_mask) -{ - struct rdt_domain *dom = &hw_dom->d_resctrl; - - if (cfg->new_ctrl != hw_dom->ctrl_val[idx]) { - cpumask_set_cpu(cpumask_any(&dom->cpu_mask), cpu_mask); - hw_dom->ctrl_val[idx] = cfg->new_ctrl; - - return true; - } - - return false; -} - int resctrl_arch_update_one(struct rdt_resource *r, struct rdt_domain *d, u32 closid, enum resctrl_conf_type t, u32 cfg_val) { @@ -302,9 +286,10 @@ int resctrl_arch_update_one(struct rdt_resource *r, struct rdt_domain *d, hw_dom->ctrl_val[idx] = cfg_val; msr_param.res = r; + msr_param.dom = d; msr_param.low = idx; msr_param.high = idx + 1; - hw_res->msr_update(d, &msr_param, r); + hw_res->msr_update(&msr_param); return 0; } @@ -315,48 +300,39 @@ int resctrl_arch_update_domains(struct rdt_resource *r, u32 closid) struct rdt_hw_domain *hw_dom; struct msr_param msr_param; enum resctrl_conf_type t; - cpumask_var_t cpu_mask; struct rdt_domain *d; u32 idx; /* Walking r->domains, ensure it can't race with cpuhp */ lockdep_assert_cpus_held(); - if (!zalloc_cpumask_var(&cpu_mask, GFP_KERNEL)) - return -ENOMEM; - - msr_param.res = NULL; list_for_each_entry(d, &r->domains, list) { hw_dom = resctrl_to_arch_dom(d); + msr_param.res = NULL; for (t = 0; t < CDP_NUM_TYPES; t++) { cfg = &hw_dom->d_resctrl.staged_config[t]; if (!cfg->have_new_ctrl) continue; idx = get_config_index(closid, t); - if (!apply_config(hw_dom, cfg, idx, cpu_mask)) + if (cfg->new_ctrl == hw_dom->ctrl_val[idx]) continue; + hw_dom->ctrl_val[idx] = cfg->new_ctrl; if (!msr_param.res) { msr_param.low = idx; msr_param.high = msr_param.low + 1; msr_param.res = r; + msr_param.dom = d; } else { msr_param.low = min(msr_param.low, idx); msr_param.high = max(msr_param.high, idx + 1); } } + if (msr_param.res) + smp_call_function_any(&d->cpu_mask, rdt_ctrl_update, &msr_param, 1); } - if (cpumask_empty(cpu_mask)) - goto done; - - /* Update resource control msr on all the CPUs. */ - on_each_cpu_mask(cpu_mask, rdt_ctrl_update, &msr_param, 1); - -done: - free_cpumask_var(cpu_mask); - return 0; } |