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perf/x86/uncore: Cleanup unused unit structure

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The unit control and ID information are retrieved from the unit control
RB tree. No one uses the old structure anymore. Remove them.

Signed-off-by: Kan Liang <kan.liang@linux.intel.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Tested-by: Yunying Sun <yunying.sun@intel.com>
Link: https://lore.kernel.org/r/20240614134631.1092359-8-kan.liang@linux.intel.com
This commit is contained in:
Kan Liang 2024-06-14 06:46:30 -07:00 committed by Peter Zijlstra
parent f76a842044
commit 15a4bd5185
4 changed files with 12 additions and 112 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
arch/x86/events/intel/uncore.c
View File

@ -868,7 +868,7 @@ static inline int uncore_get_box_id(struct intel_uncore_type *type,
if (type->boxes)
return intel_uncore_find_discovery_unit_id(type->boxes, -1, pmu->pmu_idx);
return type->box_ids ? type->box_ids[pmu->pmu_idx] : pmu->pmu_idx;
return pmu->pmu_idx;
}
void uncore_get_alias_name(char *pmu_name, struct intel_uncore_pmu *pmu)
@ -980,10 +980,7 @@ static void uncore_type_exit(struct intel_uncore_type *type)
kfree(type->pmus);
type->pmus = NULL;
}
if (type->box_ids) {
kfree(type->box_ids);
type->box_ids = NULL;
}
kfree(type->events_group);
type->events_group = NULL;
}

2
arch/x86/events/intel/uncore.h
View File

@ -62,7 +62,6 @@ struct intel_uncore_type {
unsigned fixed_ctr;
unsigned fixed_ctl;
unsigned box_ctl;
u64 *box_ctls; /* Unit ctrl addr of the first box of each die */
union {
unsigned msr_offset;
unsigned mmio_offset;
@ -76,7 +75,6 @@ struct intel_uncore_type {
u64 *pci_offsets;
u64 *mmio_offsets;
};
unsigned *box_ids;
struct event_constraint unconstrainted;
struct event_constraint *constraints;
struct intel_uncore_pmu *pmus;

106
arch/x86/events/intel/uncore_discovery.c
View File

@ -89,10 +89,6 @@ add_uncore_discovery_type(struct uncore_unit_discovery *unit)
if (!type)
return NULL;
type->box_ctrl_die = kcalloc(__uncore_max_dies, sizeof(u64), GFP_KERNEL);
if (!type->box_ctrl_die)
goto free_type;
type->units = RB_ROOT;
type->access_type = unit->access_type;
@ -102,12 +98,6 @@ add_uncore_discovery_type(struct uncore_unit_discovery *unit)
rb_add(&type->node, &discovery_tables, __type_less);
return type;
free_type:
kfree(type);
return NULL;
}
static struct intel_uncore_discovery_type *
@ -230,13 +220,10 @@ void uncore_find_add_unit(struct intel_uncore_discovery_unit *node,
static void
uncore_insert_box_info(struct uncore_unit_discovery *unit,
int die, bool parsed)
int die)
{
struct intel_uncore_discovery_unit *node;
struct intel_uncore_discovery_type *type;
unsigned int *ids;
u64 *box_offset;
int i;
if (!unit->ctl || !unit->ctl_offset || !unit->ctr_offset) {
pr_info("Invalid address is detected for uncore type %d box %d, "
@ -253,79 +240,21 @@ uncore_insert_box_info(struct uncore_unit_discovery *unit,
node->id = unit->box_id;
node->addr = unit->ctl;
if (parsed) {
type = search_uncore_discovery_type(unit->box_type);
type = get_uncore_discovery_type(unit);
if (!type) {
pr_info("A spurious uncore type %d is detected, "
"Disable the uncore type.\n",
unit->box_type);
kfree(node);
return;
}
uncore_find_add_unit(node, &type->units, &type->num_units);
/* Store the first box of each die */
if (!type->box_ctrl_die[die])
type->box_ctrl_die[die] = unit->ctl;
return;
}
type = get_uncore_discovery_type(unit);
if (!type)
goto free_node;
box_offset = kcalloc(type->num_boxes + 1, sizeof(u64), GFP_KERNEL);
if (!box_offset)
goto free_node;
ids = kcalloc(type->num_boxes + 1, sizeof(unsigned int), GFP_KERNEL);
if (!ids)
goto free_box_offset;
uncore_find_add_unit(node, &type->units, &type->num_units);
/* Store generic information for the first box */
if (!type->num_boxes) {
type->box_ctrl = unit->ctl;
type->box_ctrl_die[die] = unit->ctl;
if (type->num_units == 1) {
type->num_counters = unit->num_regs;
type->counter_width = unit->bit_width;
type->ctl_offset = unit->ctl_offset;
type->ctr_offset = unit->ctr_offset;
*ids = unit->box_id;
goto end;
}
for (i = 0; i < type->num_boxes; i++) {
ids[i] = type->ids[i];
box_offset[i] = type->box_offset[i];
if (unit->box_id == ids[i]) {
pr_info("Duplicate uncore type %d box ID %d is detected, "
"Drop the duplicate uncore unit.\n",
unit->box_type, unit->box_id);
goto free_ids;
}
}
ids[i] = unit->box_id;
box_offset[i] = unit->ctl - type->box_ctrl;
kfree(type->ids);
kfree(type->box_offset);
end:
type->ids = ids;
type->box_offset = box_offset;
type->num_boxes++;
return;
free_ids:
kfree(ids);
free_box_offset:
kfree(box_offset);
free_node:
kfree(node);
}
static bool
@ -404,7 +333,7 @@ static int parse_discovery_table(struct pci_dev *dev, int die,
if (uncore_ignore_unit(&unit, ignore))
continue;
uncore_insert_box_info(&unit, die, *parsed);
uncore_insert_box_info(&unit, die);
}
*parsed = true;
@ -474,7 +403,6 @@ void intel_uncore_clear_discovery_tables(void)
rb_erase(node, &type->units);
kfree(pos);
}
kfree(type->box_ctrl_die);
kfree(type);
}
}
@ -738,41 +666,23 @@ static bool uncore_update_uncore_type(enum uncore_access_type type_id,
struct intel_uncore_discovery_type *type)
{
uncore->type_id = type->type;
uncore->num_boxes = type->num_boxes;
uncore->num_counters = type->num_counters;
uncore->perf_ctr_bits = type->counter_width;
uncore->box_ids = type->ids;
uncore->perf_ctr = (unsigned int)type->ctr_offset;
uncore->event_ctl = (unsigned int)type->ctl_offset;
uncore->boxes = &type->units;
uncore->num_boxes = type->num_units;
switch (type_id) {
case UNCORE_ACCESS_MSR:
uncore->ops = &generic_uncore_msr_ops;
uncore->perf_ctr = (unsigned int)type->ctr_offset;
uncore->event_ctl = (unsigned int)type->ctl_offset;
uncore->box_ctl = (unsigned int)type->box_ctrl;
uncore->msr_offsets = type->box_offset;
uncore->boxes = &type->units;
uncore->num_boxes = type->num_units;
break;
case UNCORE_ACCESS_PCI:
uncore->ops = &generic_uncore_pci_ops;
uncore->perf_ctr = (unsigned int)UNCORE_DISCOVERY_PCI_BOX_CTRL(type->box_ctrl) + type->ctr_offset;
uncore->event_ctl = (unsigned int)UNCORE_DISCOVERY_PCI_BOX_CTRL(type->box_ctrl) + type->ctl_offset;
uncore->box_ctl = (unsigned int)UNCORE_DISCOVERY_PCI_BOX_CTRL(type->box_ctrl);
uncore->box_ctls = type->box_ctrl_die;
uncore->pci_offsets = type->box_offset;
uncore->boxes = &type->units;
uncore->num_boxes = type->num_units;
break;
case UNCORE_ACCESS_MMIO:
uncore->ops = &generic_uncore_mmio_ops;
uncore->perf_ctr = (unsigned int)type->ctr_offset;
uncore->event_ctl = (unsigned int)type->ctl_offset;
uncore->box_ctl = (unsigned int)type->box_ctrl;
uncore->box_ctls = type->box_ctrl_die;
uncore->mmio_offsets = type->box_offset;
uncore->mmio_map_size = UNCORE_GENERIC_MMIO_SIZE;
uncore->boxes = &type->units;
uncore->num_boxes = type->num_units;
break;
default:
return false;

5
arch/x86/events/intel/uncore_discovery.h
View File

@ -124,18 +124,13 @@ struct intel_uncore_discovery_unit {
struct intel_uncore_discovery_type {
struct rb_node node;
enum uncore_access_type access_type;
u64 box_ctrl; /* Unit ctrl addr of the first box */
u64 *box_ctrl_die; /* Unit ctrl addr of the first box of each die */
struct rb_root units; /* Unit ctrl addr for all units */
u16 type; /* Type ID of the uncore block */
u8 num_counters;
u8 counter_width;
u8 ctl_offset; /* Counter Control 0 offset */
u8 ctr_offset; /* Counter 0 offset */
u16 num_boxes; /* number of boxes for the uncore block */
u16 num_units; /* number of units */
unsigned int *ids; /* Box IDs */
u64 *box_offset; /* Box offset */
};
bool intel_uncore_has_discovery_tables(int *ignore);