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perf/x86/intel/uncore: Support IIO free-running counters on Sapphire Rapids server

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Several free-running counters for IIO uncore blocks are supported on
Sapphire Rapids server.

They are not enumerated in the discovery tables. Extend
generic_init_uncores() to support extra uncore types. The uncore types
for the free-running counters is inserted right after the uncore types
retrieved from the discovery table.

The number of the free-running counter boxes is calculated from the max
number of the corresponding standard boxes.

Signed-off-by: Kan Liang <kan.liang@linux.intel.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Andi Kleen <ak@linux.intel.com>
Link: https://lore.kernel.org/r/1625087320-194204-15-git-send-email-kan.liang@linux.intel.com
This commit is contained in:
Kan Liang 2021-06-30 14:08:38 -07:00 committed by Peter Zijlstra
parent 1583971b5c
commit 0378c93a92
3 changed files with 136 additions and 11 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

10
arch/x86/events/intel/uncore_discovery.c
View file

@ -569,7 +569,7 @@ static bool uncore_update_uncore_type(enum uncore_access_type type_id,
}
struct intel_uncore_type **
intel_uncore_generic_init_uncores(enum uncore_access_type type_id)
intel_uncore_generic_init_uncores(enum uncore_access_type type_id, int num_extra)
{
struct intel_uncore_discovery_type *type;
struct intel_uncore_type **uncores;
@ -577,7 +577,7 @@ intel_uncore_generic_init_uncores(enum uncore_access_type type_id)
struct rb_node *node;
int i = 0;
uncores = kcalloc(num_discovered_types[type_id] + 1,
uncores = kcalloc(num_discovered_types[type_id] + num_extra + 1,
sizeof(struct intel_uncore_type *), GFP_KERNEL);
if (!uncores)
return empty_uncore;
@ -606,17 +606,17 @@ intel_uncore_generic_init_uncores(enum uncore_access_type type_id)
void intel_uncore_generic_uncore_cpu_init(void)
{
uncore_msr_uncores = intel_uncore_generic_init_uncores(UNCORE_ACCESS_MSR);
uncore_msr_uncores = intel_uncore_generic_init_uncores(UNCORE_ACCESS_MSR, 0);
}
int intel_uncore_generic_uncore_pci_init(void)
{
uncore_pci_uncores = intel_uncore_generic_init_uncores(UNCORE_ACCESS_PCI);
uncore_pci_uncores = intel_uncore_generic_init_uncores(UNCORE_ACCESS_PCI, 0);
return 0;
}
void intel_uncore_generic_uncore_mmio_init(void)
{
uncore_mmio_uncores = intel_uncore_generic_init_uncores(UNCORE_ACCESS_MMIO);
uncore_mmio_uncores = intel_uncore_generic_init_uncores(UNCORE_ACCESS_MMIO, 0);
}

2
arch/x86/events/intel/uncore_discovery.h
View file

@ -149,4 +149,4 @@ u64 intel_generic_uncore_pci_read_counter(struct intel_uncore_box *box,
struct perf_event *event);
struct intel_uncore_type **
intel_uncore_generic_init_uncores(enum uncore_access_type type_id);
intel_uncore_generic_init_uncores(enum uncore_access_type type_id, int num_extra);

135
arch/x86/events/intel/uncore_snbep.c
View file

@ -5752,6 +5752,7 @@ static struct intel_uncore_type spr_uncore_mdf = {
};
#define UNCORE_SPR_NUM_UNCORE_TYPES 12
#define UNCORE_SPR_IIO 1
static struct intel_uncore_type *spr_uncores[UNCORE_SPR_NUM_UNCORE_TYPES] = {
&spr_uncore_chabox,
@ -5768,6 +5769,92 @@ static struct intel_uncore_type *spr_uncores[UNCORE_SPR_NUM_UNCORE_TYPES] = {
&spr_uncore_mdf,
};
enum perf_uncore_spr_iio_freerunning_type_id {
SPR_IIO_MSR_IOCLK,
SPR_IIO_MSR_BW_IN,
SPR_IIO_MSR_BW_OUT,
SPR_IIO_FREERUNNING_TYPE_MAX,
};
static struct freerunning_counters spr_iio_freerunning[] = {
[SPR_IIO_MSR_IOCLK] = { 0x340e, 0x1, 0x10, 1, 48 },
[SPR_IIO_MSR_BW_IN] = { 0x3800, 0x1, 0x10, 8, 48 },
[SPR_IIO_MSR_BW_OUT] = { 0x3808, 0x1, 0x10, 8, 48 },
};
static struct uncore_event_desc spr_uncore_iio_freerunning_events[] = {
/* Free-Running IIO CLOCKS Counter */
INTEL_UNCORE_EVENT_DESC(ioclk, "event=0xff,umask=0x10"),
/* Free-Running IIO BANDWIDTH IN Counters */
INTEL_UNCORE_EVENT_DESC(bw_in_port0, "event=0xff,umask=0x20"),
INTEL_UNCORE_EVENT_DESC(bw_in_port0.scale, "3.814697266e-6"),
INTEL_UNCORE_EVENT_DESC(bw_in_port0.unit, "MiB"),
INTEL_UNCORE_EVENT_DESC(bw_in_port1, "event=0xff,umask=0x21"),
INTEL_UNCORE_EVENT_DESC(bw_in_port1.scale, "3.814697266e-6"),
INTEL_UNCORE_EVENT_DESC(bw_in_port1.unit, "MiB"),
INTEL_UNCORE_EVENT_DESC(bw_in_port2, "event=0xff,umask=0x22"),
INTEL_UNCORE_EVENT_DESC(bw_in_port2.scale, "3.814697266e-6"),
INTEL_UNCORE_EVENT_DESC(bw_in_port2.unit, "MiB"),
INTEL_UNCORE_EVENT_DESC(bw_in_port3, "event=0xff,umask=0x23"),
INTEL_UNCORE_EVENT_DESC(bw_in_port3.scale, "3.814697266e-6"),
INTEL_UNCORE_EVENT_DESC(bw_in_port3.unit, "MiB"),
INTEL_UNCORE_EVENT_DESC(bw_in_port4, "event=0xff,umask=0x24"),
INTEL_UNCORE_EVENT_DESC(bw_in_port4.scale, "3.814697266e-6"),
INTEL_UNCORE_EVENT_DESC(bw_in_port4.unit, "MiB"),
INTEL_UNCORE_EVENT_DESC(bw_in_port5, "event=0xff,umask=0x25"),
INTEL_UNCORE_EVENT_DESC(bw_in_port5.scale, "3.814697266e-6"),
INTEL_UNCORE_EVENT_DESC(bw_in_port5.unit, "MiB"),
INTEL_UNCORE_EVENT_DESC(bw_in_port6, "event=0xff,umask=0x26"),
INTEL_UNCORE_EVENT_DESC(bw_in_port6.scale, "3.814697266e-6"),
INTEL_UNCORE_EVENT_DESC(bw_in_port6.unit, "MiB"),
INTEL_UNCORE_EVENT_DESC(bw_in_port7, "event=0xff,umask=0x27"),
INTEL_UNCORE_EVENT_DESC(bw_in_port7.scale, "3.814697266e-6"),
INTEL_UNCORE_EVENT_DESC(bw_in_port7.unit, "MiB"),
/* Free-Running IIO BANDWIDTH OUT Counters */
INTEL_UNCORE_EVENT_DESC(bw_out_port0, "event=0xff,umask=0x30"),
INTEL_UNCORE_EVENT_DESC(bw_out_port0.scale, "3.814697266e-6"),
INTEL_UNCORE_EVENT_DESC(bw_out_port0.unit, "MiB"),
INTEL_UNCORE_EVENT_DESC(bw_out_port1, "event=0xff,umask=0x31"),
INTEL_UNCORE_EVENT_DESC(bw_out_port1.scale, "3.814697266e-6"),
INTEL_UNCORE_EVENT_DESC(bw_out_port1.unit, "MiB"),
INTEL_UNCORE_EVENT_DESC(bw_out_port2, "event=0xff,umask=0x32"),
INTEL_UNCORE_EVENT_DESC(bw_out_port2.scale, "3.814697266e-6"),
INTEL_UNCORE_EVENT_DESC(bw_out_port2.unit, "MiB"),
INTEL_UNCORE_EVENT_DESC(bw_out_port3, "event=0xff,umask=0x33"),
INTEL_UNCORE_EVENT_DESC(bw_out_port3.scale, "3.814697266e-6"),
INTEL_UNCORE_EVENT_DESC(bw_out_port3.unit, "MiB"),
INTEL_UNCORE_EVENT_DESC(bw_out_port4, "event=0xff,umask=0x34"),
INTEL_UNCORE_EVENT_DESC(bw_out_port4.scale, "3.814697266e-6"),
INTEL_UNCORE_EVENT_DESC(bw_out_port4.unit, "MiB"),
INTEL_UNCORE_EVENT_DESC(bw_out_port5, "event=0xff,umask=0x35"),
INTEL_UNCORE_EVENT_DESC(bw_out_port5.scale, "3.814697266e-6"),
INTEL_UNCORE_EVENT_DESC(bw_out_port5.unit, "MiB"),
INTEL_UNCORE_EVENT_DESC(bw_out_port6, "event=0xff,umask=0x36"),
INTEL_UNCORE_EVENT_DESC(bw_out_port6.scale, "3.814697266e-6"),
INTEL_UNCORE_EVENT_DESC(bw_out_port6.unit, "MiB"),
INTEL_UNCORE_EVENT_DESC(bw_out_port7, "event=0xff,umask=0x37"),
INTEL_UNCORE_EVENT_DESC(bw_out_port7.scale, "3.814697266e-6"),
INTEL_UNCORE_EVENT_DESC(bw_out_port7.unit, "MiB"),
{ /* end: all zeroes */ },
};
static struct intel_uncore_type spr_uncore_iio_free_running = {
.name = "iio_free_running",
.num_counters = 17,
.num_freerunning_types = SPR_IIO_FREERUNNING_TYPE_MAX,
.freerunning = spr_iio_freerunning,
.ops = &skx_uncore_iio_freerunning_ops,
.event_descs = spr_uncore_iio_freerunning_events,
.format_group = &skx_uncore_iio_freerunning_format_group,
};
#define UNCORE_SPR_MSR_EXTRA_UNCORES 1
static struct intel_uncore_type *spr_msr_uncores[UNCORE_SPR_MSR_EXTRA_UNCORES] = {
&spr_uncore_iio_free_running,
};
static void uncore_type_customized_copy(struct intel_uncore_type *to_type,
struct intel_uncore_type *from_type)
{
@ -5803,11 +5890,13 @@ static void uncore_type_customized_copy(struct intel_uncore_type *to_type,
}
static struct intel_uncore_type **
uncore_get_uncores(enum uncore_access_type type_id)
uncore_get_uncores(enum uncore_access_type type_id, int num_extra,
struct intel_uncore_type **extra)
{
struct intel_uncore_type **types, **start_types;
int i;
start_types = types = intel_uncore_generic_init_uncores(type_id);
start_types = types = intel_uncore_generic_init_uncores(type_id, num_extra);
/* Only copy the customized features */
for (; *types; types++) {
@ -5816,23 +5905,59 @@ uncore_get_uncores(enum uncore_access_type type_id)
uncore_type_customized_copy(*types, spr_uncores[(*types)->type_id]);
}
for (i = 0; i < num_extra; i++, types++)
*types = extra[i];
return start_types;
}
static struct intel_uncore_type *
uncore_find_type_by_id(struct intel_uncore_type **types, int type_id)
{
for (; *types; types++) {
if (type_id == (*types)->type_id)
return *types;
}
return NULL;
}
static int uncore_type_max_boxes(struct intel_uncore_type **types,
int type_id)
{
struct intel_uncore_type *type;
int i, max = 0;
type = uncore_find_type_by_id(types, type_id);
if (!type)
return 0;
for (i = 0; i < type->num_boxes; i++) {
if (type->box_ids[i] > max)
max = type->box_ids[i];
}
return max + 1;
}
void spr_uncore_cpu_init(void)
{
uncore_msr_uncores = uncore_get_uncores(UNCORE_ACCESS_MSR);
uncore_msr_uncores = uncore_get_uncores(UNCORE_ACCESS_MSR,
UNCORE_SPR_MSR_EXTRA_UNCORES,
spr_msr_uncores);
spr_uncore_iio_free_running.num_boxes = uncore_type_max_boxes(uncore_msr_uncores, UNCORE_SPR_IIO);
}
int spr_uncore_pci_init(void)
{
uncore_pci_uncores = uncore_get_uncores(UNCORE_ACCESS_PCI);
uncore_pci_uncores = uncore_get_uncores(UNCORE_ACCESS_PCI, 0, NULL);
return 0;
}
void spr_uncore_mmio_init(void)
{
uncore_mmio_uncores = uncore_get_uncores(UNCORE_ACCESS_MMIO);
uncore_mmio_uncores = uncore_get_uncores(UNCORE_ACCESS_MMIO, 0, NULL);
}
/* end of SPR uncore support */