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A single update for perf on x86 which ass support for the

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broken down bandwith counters.
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Merge tag 'perf-urgent-2020-08-23' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull x86 perf fix from Thomas Gleixner:
 "A single update for perf on x86 which has support for the broken down
  bandwith counters"

* tag 'perf-urgent-2020-08-23' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  perf/x86/intel/uncore: Add BW counters for GT, IA and IO breakdown
This commit is contained in:
Linus Torvalds 2020-08-23 11:15:14 -07:00
commit cea05c192b
1 changed files with 49 additions and 3 deletions
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52
arch/x86/events/intel/uncore_snb.c
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@ -390,6 +390,18 @@ static struct uncore_event_desc snb_uncore_imc_events[] = {
INTEL_UNCORE_EVENT_DESC(data_writes.scale, "6.103515625e-5"),
INTEL_UNCORE_EVENT_DESC(data_writes.unit, "MiB"),
INTEL_UNCORE_EVENT_DESC(gt_requests, "event=0x03"),
INTEL_UNCORE_EVENT_DESC(gt_requests.scale, "6.103515625e-5"),
INTEL_UNCORE_EVENT_DESC(gt_requests.unit, "MiB"),
INTEL_UNCORE_EVENT_DESC(ia_requests, "event=0x04"),
INTEL_UNCORE_EVENT_DESC(ia_requests.scale, "6.103515625e-5"),
INTEL_UNCORE_EVENT_DESC(ia_requests.unit, "MiB"),
INTEL_UNCORE_EVENT_DESC(io_requests, "event=0x05"),
INTEL_UNCORE_EVENT_DESC(io_requests.scale, "6.103515625e-5"),
INTEL_UNCORE_EVENT_DESC(io_requests.unit, "MiB"),
{ /* end: all zeroes */ },
};
@ -405,13 +417,35 @@ static struct uncore_event_desc snb_uncore_imc_events[] = {
#define SNB_UNCORE_PCI_IMC_DATA_WRITES_BASE 0x5054
#define SNB_UNCORE_PCI_IMC_CTR_BASE SNB_UNCORE_PCI_IMC_DATA_READS_BASE
/* BW break down- legacy counters */
#define SNB_UNCORE_PCI_IMC_GT_REQUESTS 0x3
#define SNB_UNCORE_PCI_IMC_GT_REQUESTS_BASE 0x5040
#define SNB_UNCORE_PCI_IMC_IA_REQUESTS 0x4
#define SNB_UNCORE_PCI_IMC_IA_REQUESTS_BASE 0x5044
#define SNB_UNCORE_PCI_IMC_IO_REQUESTS 0x5
#define SNB_UNCORE_PCI_IMC_IO_REQUESTS_BASE 0x5048
enum perf_snb_uncore_imc_freerunning_types {
SNB_PCI_UNCORE_IMC_DATA = 0,
SNB_PCI_UNCORE_IMC_DATA_READS = 0,
SNB_PCI_UNCORE_IMC_DATA_WRITES,
SNB_PCI_UNCORE_IMC_GT_REQUESTS,
SNB_PCI_UNCORE_IMC_IA_REQUESTS,
SNB_PCI_UNCORE_IMC_IO_REQUESTS,
SNB_PCI_UNCORE_IMC_FREERUNNING_TYPE_MAX,
};
static struct freerunning_counters snb_uncore_imc_freerunning[] = {
[SNB_PCI_UNCORE_IMC_DATA] = { SNB_UNCORE_PCI_IMC_DATA_READS_BASE, 0x4, 0x0, 2, 32 },
[SNB_PCI_UNCORE_IMC_DATA_READS] = { SNB_UNCORE_PCI_IMC_DATA_READS_BASE,
0x0, 0x0, 1, 32 },
[SNB_PCI_UNCORE_IMC_DATA_READS] = { SNB_UNCORE_PCI_IMC_DATA_WRITES_BASE,
0x0, 0x0, 1, 32 },
[SNB_PCI_UNCORE_IMC_GT_REQUESTS] = { SNB_UNCORE_PCI_IMC_GT_REQUESTS_BASE,
0x0, 0x0, 1, 32 },
[SNB_PCI_UNCORE_IMC_IA_REQUESTS] = { SNB_UNCORE_PCI_IMC_IA_REQUESTS_BASE,
0x0, 0x0, 1, 32 },
[SNB_PCI_UNCORE_IMC_IO_REQUESTS] = { SNB_UNCORE_PCI_IMC_IO_REQUESTS_BASE,
0x0, 0x0, 1, 32 },
};
static struct attribute *snb_uncore_imc_formats_attr[] = {
@ -525,6 +559,18 @@ static int snb_uncore_imc_event_init(struct perf_event *event)
base = SNB_UNCORE_PCI_IMC_DATA_WRITES_BASE;
idx = UNCORE_PMC_IDX_FREERUNNING;
break;
case SNB_UNCORE_PCI_IMC_GT_REQUESTS:
base = SNB_UNCORE_PCI_IMC_GT_REQUESTS_BASE;
idx = UNCORE_PMC_IDX_FREERUNNING;
break;
case SNB_UNCORE_PCI_IMC_IA_REQUESTS:
base = SNB_UNCORE_PCI_IMC_IA_REQUESTS_BASE;
idx = UNCORE_PMC_IDX_FREERUNNING;
break;
case SNB_UNCORE_PCI_IMC_IO_REQUESTS:
base = SNB_UNCORE_PCI_IMC_IO_REQUESTS_BASE;
idx = UNCORE_PMC_IDX_FREERUNNING;
break;
default:
return -EINVAL;
}
@ -598,7 +644,7 @@ static struct intel_uncore_ops snb_uncore_imc_ops = {
static struct intel_uncore_type snb_uncore_imc = {
.name = "imc",
.num_counters = 2,
.num_counters = 5,
.num_boxes = 1,
.num_freerunning_types = SNB_PCI_UNCORE_IMC_FREERUNNING_TYPE_MAX,
.mmio_map_size = SNB_UNCORE_PCI_IMC_MAP_SIZE,