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);
