Hi Babu,
On 8/21/2023 4:30 PM, Babu Moger wrote:
...
> diff --git a/arch/x86/kernel/cpu/resctrl/internal.h b/arch/x86/kernel/cpu/resctrl/internal.h
> index 2fae6d9e24d3..3fa32c1c2677 100644
> --- a/arch/x86/kernel/cpu/resctrl/internal.h
> +++ b/arch/x86/kernel/cpu/resctrl/internal.h
> @@ -296,9 +296,15 @@ struct rdtgroup {
> * --> RFTYPE_BASE (Files common for both MON and CTRL groups)
> * Files: cpus, cpus_list, tasks
> *
> + * --> RFTYPE_DEBUG (Files to help resctrl debugging)
> + * File: mon_hw_id
> + *
This does not look right. I think mon_hw_id should have RFTYPE_MON
(more below).
> * --> RFTYPE_CTRL (Files only for CTRL group)
> * Files: mode, schemata, size
> *
> + * --> RFTYPE_DEBUG (Files to help resctrl debugging)
> + * File: ctrl_hw_id
> + *
> */
> #define RFTYPE_INFO BIT(0)
> #define RFTYPE_BASE BIT(1)
> diff --git a/arch/x86/kernel/cpu/resctrl/rdtgroup.c b/arch/x86/kernel/cpu/resctrl/rdtgroup.c
> index 94bd69f9964c..e0c2479acf49 100644
> --- a/arch/x86/kernel/cpu/resctrl/rdtgroup.c
> +++ b/arch/x86/kernel/cpu/resctrl/rdtgroup.c
> @@ -776,6 +776,38 @@ static int rdtgroup_tasks_show(struct kernfs_open_file *of,
> return ret;
> }
>
> +static int rdtgroup_closid_show(struct kernfs_open_file *of,
> + struct seq_file *s, void *v)
> +{
> + struct rdtgroup *rdtgrp;
> + int ret = 0;
> +
> + rdtgrp = rdtgroup_kn_lock_live(of->kn);
> + if (rdtgrp)
> + seq_printf(s, "%u\n", rdtgrp->closid);
> + else
> + ret = -ENOENT;
> + rdtgroup_kn_unlock(of->kn);
> +
> + return ret;
> +}
> +
> +static int rdtgroup_rmid_show(struct kernfs_open_file *of,
> + struct seq_file *s, void *v)
> +{
> + struct rdtgroup *rdtgrp;
> + int ret = 0;
> +
> + rdtgrp = rdtgroup_kn_lock_live(of->kn);
> + if (rdtgrp)
> + seq_printf(s, "%u\n", rdtgrp->mon.rmid);
> + else
> + ret = -ENOENT;
> + rdtgroup_kn_unlock(of->kn);
> +
> + return ret;
> +}
> +
> #ifdef CONFIG_PROC_CPU_RESCTRL
>
> /*
> @@ -1837,6 +1869,13 @@ static struct rftype res_common_files[] = {
> .seq_show = rdtgroup_tasks_show,
> .fflags = RFTYPE_BASE,
> },
> + {
> + .name = "mon_hw_id",
> + .mode = 0444,
> + .kf_ops = &rdtgroup_kf_single_ops,
> + .seq_show = rdtgroup_rmid_show,
> + .fflags = RFTYPE_BASE | RFTYPE_DEBUG,
I missed this earlier but I think this also needs a RFTYPE_MON.
Perhaps patch 3 can introduce a new RFTYPE_MON_BASE to not
have the flags of the two new files look too different?
> + },
> {
> .name = "schemata",
> .mode = 0644,
> @@ -1860,6 +1899,13 @@ static struct rftype res_common_files[] = {
> .seq_show = rdtgroup_size_show,
> .fflags = RFTYPE_CTRL_BASE,
> },
> + {
> + .name = "ctrl_hw_id",
> + .mode = 0444,
> + .kf_ops = &rdtgroup_kf_single_ops,
> + .seq_show = rdtgroup_closid_show,
> + .fflags = RFTYPE_CTRL_BASE | RFTYPE_DEBUG,
> + },
>
> };
>
Reinette
