[PATCH v2 10/24] x86/resctrl: Swizzle rdt_resource and resctrl_schema in pseudo_lock_region

James Morse
2021-03-12T18:01:08Z

struct pseudo_lock_region points to the rdt_resource. Once the
resources are merged, this won't be unique. The resource name
is moving into the scheam, so that eventually resctrl can generate
it.

Swap pseudo_lock_region's rdt_resource pointer for a schema pointer.

Reviewed-by: Jamie Iles <jamie@nuviainc.com>
Signed-off-by: James Morse <james.morse@arm.com>
---
arch/x86/kernel/cpu/resctrl/ctrlmondata.c | 4 ++--
arch/x86/kernel/cpu/resctrl/internal.h | 6 +++---
arch/x86/kernel/cpu/resctrl/pseudo_lock.c | 8 ++++----
arch/x86/kernel/cpu/resctrl/rdtgroup.c | 4 ++--
4 files changed, 11 insertions(+), 11 deletions(-)

diff --git a/arch/x86/kernel/cpu/resctrl/ctrlmondata.c b/arch/x86/kernel/cpu/resctrl/ctrlmondata.c
index dbbdd9f275e9..4428ec499037 100644
--- a/arch/x86/kernel/cpu/resctrl/ctrlmondata.c
+++ b/arch/x86/kernel/cpu/resctrl/ctrlmondata.c
@@ -227,7 +227,7 @@ static int parse_line(char *line, struct resctrl_schema *s,
* the required initialization for single
* region and return.
*/
- rdtgrp->plr->r = r;
+ rdtgrp->plr->s = s;
rdtgrp->plr->d = d;
rdtgrp->plr->cbm = d->new_ctrl;
d->plr = rdtgrp->plr;
@@ -426,7 +426,7 @@ int rdtgroup_schemata_show(struct kernfs_open_file *of,
ret = -ENODEV;
} else {
seq_printf(s, "%s:%d=%x\n",
- rdtgrp->plr->r->name,
+ rdtgrp->plr->s->res->name,
rdtgrp->plr->d->id,
rdtgrp->plr->cbm);
}
diff --git a/arch/x86/kernel/cpu/resctrl/internal.h b/arch/x86/kernel/cpu/resctrl/internal.h
index 97f1fff90147..34b24a89eb6d 100644
--- a/arch/x86/kernel/cpu/resctrl/internal.h
+++ b/arch/x86/kernel/cpu/resctrl/internal.h
@@ -158,8 +158,8 @@ struct mongroup {

/**
* struct pseudo_lock_region - pseudo-lock region information
- * @r: RDT resource to which this pseudo-locked region
- * belongs
+ * @s: Resctrl schema for the resource to which this
+ * pseudo-locked region belongs
* @d: RDT domain to which this pseudo-locked region
* belongs
* @cbm: bitmask of the pseudo-locked region
@@ -179,7 +179,7 @@ struct mongroup {
* @pm_reqs: Power management QoS requests related to this region
*/
struct pseudo_lock_region {
- struct rdt_resource *r;
+ struct resctrl_schema *s;
struct rdt_domain *d;
u32 cbm;
wait_queue_head_t lock_thread_wq;
diff --git a/arch/x86/kernel/cpu/resctrl/pseudo_lock.c b/arch/x86/kernel/cpu/resctrl/pseudo_lock.c
index f8c5af759c0d..0ec6e335468c 100644
--- a/arch/x86/kernel/cpu/resctrl/pseudo_lock.c
+++ b/arch/x86/kernel/cpu/resctrl/pseudo_lock.c
@@ -246,7 +246,7 @@ static void pseudo_lock_region_clear(struct pseudo_lock_region *plr)
plr->line_size = 0;
kfree(plr->kmem);
plr->kmem = NULL;
- plr->r = NULL;
+ plr->s = NULL;
if (plr->d)
plr->d->plr = NULL;
plr->d = NULL;
@@ -290,10 +290,10 @@ static int pseudo_lock_region_init(struct pseudo_lock_region *plr)

ci = get_cpu_cacheinfo(plr->cpu);

- plr->size = rdtgroup_cbm_to_size(plr->r, plr->d, plr->cbm);
+ plr->size = rdtgroup_cbm_to_size(plr->s->res, plr->d, plr->cbm);

for (i = 0; i < ci->num_leaves; i++) {
- if (ci->info_list[i].level == plr->r->cache_level) {
+ if (ci->info_list[i].level == plr->s->res->cache_level) {
plr->line_size = ci->info_list[i].coherency_line_size;
return 0;
}
@@ -796,7 +796,7 @@ bool rdtgroup_cbm_overlaps_pseudo_locked(struct rdt_domain *d, unsigned long cbm
unsigned long cbm_b;

if (d->plr) {
- cbm_len = d->plr->r->cache.cbm_len;
+ cbm_len = d->plr->s->res->cache.cbm_len;
cbm_b = d->plr->cbm;
if (bitmap_intersects(&cbm, &cbm_b, cbm_len))
return true;
diff --git a/arch/x86/kernel/cpu/resctrl/rdtgroup.c b/arch/x86/kernel/cpu/resctrl/rdtgroup.c
index 368cb3a16cfd..1e59d3e9b861 100644
--- a/arch/x86/kernel/cpu/resctrl/rdtgroup.c
+++ b/arch/x86/kernel/cpu/resctrl/rdtgroup.c
@@ -1439,8 +1439,8 @@ static int rdtgroup_size_show(struct kernfs_open_file *of,
ret = -ENODEV;
} else {
seq_printf(s, "%*s:", max_name_width,
- rdtgrp->plr->r->name);
- size = rdtgroup_cbm_to_size(rdtgrp->plr->r,
+ rdtgrp->plr->s->res->name);
+ size = rdtgroup_cbm_to_size(rdtgrp->plr->s->res,
rdtgrp->plr->d,
rdtgrp->plr->cbm);
seq_printf(s, "%d=%u\n", rdtgrp->plr->d->id, size);
--
2.30.0