Hi Babu,
On 6/1/2023 12:02 PM, Babu Moger wrote:
> Introduce RFTYPE_DEBUG flag which can be used to add files when
> resctrl is mounted with "-o debug" option. RFTYPE_DEBUG is OR'd
> with other RFTYPE_ flags. These other flags decide where in resctrl
> structure these files should be created.
>
> Signed-off-by: Babu Moger <babu.moger@xxxxxxx>
> ---
> arch/x86/kernel/cpu/resctrl/internal.h | 1 +
> arch/x86/kernel/cpu/resctrl/rdtgroup.c | 5 +++++
> 2 files changed, 6 insertions(+)
>
> diff --git a/arch/x86/kernel/cpu/resctrl/internal.h b/arch/x86/kernel/cpu/resctrl/internal.h
> index c07c6517d856..5bc8d371fc3e 100644
> --- a/arch/x86/kernel/cpu/resctrl/internal.h
> +++ b/arch/x86/kernel/cpu/resctrl/internal.h
> @@ -294,6 +294,7 @@ struct rdtgroup {
> #define RFTYPE_TOP BIT(6)
> #define RFTYPE_RES_CACHE BIT(8)
> #define RFTYPE_RES_MB BIT(9)
> +#define RFTYPE_DEBUG BIT(10)
> #define RFTYPE_CTRL_INFO (RFTYPE_INFO | RFTYPE_CTRL)
> #define RFTYPE_MON_INFO (RFTYPE_INFO | RFTYPE_MON)
> #define RFTYPE_TOP_INFO (RFTYPE_INFO | RFTYPE_TOP)
> diff --git a/arch/x86/kernel/cpu/resctrl/rdtgroup.c b/arch/x86/kernel/cpu/resctrl/rdtgroup.c
> index e03cb01c4742..9e42ecbb9063 100644
> --- a/arch/x86/kernel/cpu/resctrl/rdtgroup.c
> +++ b/arch/x86/kernel/cpu/resctrl/rdtgroup.c
> @@ -1862,6 +1862,7 @@ static struct rftype res_common_files[] = {
> .mode = 0444,
> .kf_ops = &rdtgroup_kf_single_ops,
> .seq_show = rdtgroup_rmid_show,
> + .fflags = RFTYPE_BASE | RFTYPE_DEBUG,
> },
> {
> .name = "schemata",
> @@ -1891,6 +1892,7 @@ static struct rftype res_common_files[] = {
> .mode = 0444,
> .kf_ops = &rdtgroup_kf_single_ops,
> .seq_show = rdtgroup_closid_show,
> + .fflags = RFTYPE_CTRL_BASE | RFTYPE_DEBUG,
> },
>
> };
> @@ -1905,6 +1907,9 @@ static int rdtgroup_add_files(struct kernfs_node *kn, unsigned long fflags)
>
> lockdep_assert_held(&rdtgroup_mutex);
>
> + if (resctrl_debug)
> + fflags |= RFTYPE_DEBUG;
> +
> for (rft = rfts; rft < rfts + len; rft++) {
> if (rft->fflags && ((fflags & rft->fflags) == rft->fflags)) {
> ret = rdtgroup_add_file(kn, rft);
>
>
I think that the first and last hunk of this patch can be
squashed with patch 5. From what I can tell it would help
the motivation of patch 5 and fit nicely with what its
changelog aims to describe. The remaining hunks can be
moved to patch 6.
Reinette
