From: Wang ShaoBo bobo.shaobowang@huawei.com
hulk inclusion category: feature bugzilla: 34278 CVE: NA
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For each ctrl group, it's monitoring data should include all it's child mon groups' monitoring data, these code is borrowed from Intel-RDT for facilitating users to configure different monitoring strategies.
Signed-off-by: Wang ShaoBo bobo.shaobowang@huawei.com Reviewed-by: Xiongfeng Wang wangxiongfeng2@huawei.com Reviewed-by: Cheng Jian cj.chengjian@huawei.com Signed-off-by: Yang Yingliang yangyingliang@huawei.com Signed-off-by: Cheng Jian cj.chengjian@huawei.com --- arch/arm64/kernel/mpam/mpam_ctrlmon.c | 27 +++++++++++++++++++++++++++ 1 file changed, 27 insertions(+)
diff --git a/arch/arm64/kernel/mpam/mpam_ctrlmon.c b/arch/arm64/kernel/mpam/mpam_ctrlmon.c index b290fbf49c4c..8052a8bc0893 100644 --- a/arch/arm64/kernel/mpam/mpam_ctrlmon.c +++ b/arch/arm64/kernel/mpam/mpam_ctrlmon.c @@ -453,6 +453,33 @@ int resctrl_group_mondata_show(struct seq_file *m, void *arg) }
usage = rr->mon_read(d, md.priv); + /* + * if this rdtgroup is ctrlmon group, also collect it's + * mon groups' monitor data. + */ + if (rdtgrp->type == RDTCTRL_GROUP) { + struct list_head *head; + struct rdtgroup *entry; + hw_closid_t hw_closid; + enum resctrl_conf_type type = CDP_CODE; + + resctrl_cdp_map(clos, rdtgrp->closid.reqpartid, + CDP_CODE, hw_closid); + /* CDP_CODE share the same closid with CDP_BOTH */ + if (md.u.partid != hw_closid_val(hw_closid)) + type = CDP_DATA; + + head = &rdtgrp->mon.crdtgrp_list; + list_for_each_entry(entry, head, mon.crdtgrp_list) { + resctrl_cdp_map(clos, entry->closid.reqpartid, + type, hw_closid); + md.u.partid = hw_closid_val(hw_closid); + md.u.pmg = entry->mon.rmid; + md.u.mon = entry->mon.mon; + usage += rr->mon_read(d, md.priv); + } + } + seq_printf(m, "%llu\n", usage);
out: