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perf/x86/intel/uncore: Add Broadwell-U uncore IMC PMU support 

This patch enables the uncore Memory Controller (IMC) PMU
support for Intel Broadwell-U (Model 61) mobile processors.
The IMC PMU enables measuring memory bandwidth.

To use with perf:
$ perf stat -a -I 1000 -e
uncore_imc/data_reads/,uncore_imc/data_writes/ sleep 10

Tested-by: Sonny Rao <sonnyrao@chromium.org>
Signed-off-by: Stephane Eranian <eranian@google.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: kan.liang@intel.com
Cc: peterz@infradead.org
Link: http://lkml.kernel.org/r/20150423065642.GA4890@thinkpad
Signed-off-by: Ingo Molnar <mingo@kernel.org>
hifive-unleashed-5.1
Stephane Eranian 2015-04-23 08:56:42 +02:00 committed by Ingo Molnar
parent f7dc7fd1c0
commit a41f3c8cd4
3 changed files with 24 additions and 0 deletions
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3
arch/x86/kernel/cpu/perf_event_intel_uncore.c
View File

@ -922,6 +922,9 @@ static int __init uncore_pci_init(void)
case 69: /* Haswell Celeron */
ret = hsw_uncore_pci_init();
break;
case 61: /* Broadwell */
ret = bdw_uncore_pci_init();
break;
default:
return 0;
}

1
arch/x86/kernel/cpu/perf_event_intel_uncore.h
View File

@ -326,6 +326,7 @@ extern struct event_constraint uncore_constraint_empty;
int snb_uncore_pci_init(void);
int ivb_uncore_pci_init(void);
int hsw_uncore_pci_init(void);
int bdw_uncore_pci_init(void);
void snb_uncore_cpu_init(void);
void nhm_uncore_cpu_init(void);

20
arch/x86/kernel/cpu/perf_event_intel_uncore_snb.c
View File

@ -7,6 +7,7 @@
#define PCI_DEVICE_ID_INTEL_IVB_E3_IMC 0x0150
#define PCI_DEVICE_ID_INTEL_HSW_IMC 0x0c00
#define PCI_DEVICE_ID_INTEL_HSW_U_IMC 0x0a04
#define PCI_DEVICE_ID_INTEL_BDW_IMC 0x1604
/* SNB event control */
#define SNB_UNC_CTL_EV_SEL_MASK 0x000000ff
@ -486,6 +487,14 @@ static const struct pci_device_id hsw_uncore_pci_ids[] = {
{ /* end: all zeroes */ },
};
static const struct pci_device_id bdw_uncore_pci_ids[] = {
{ /* IMC */
PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_BDW_IMC),
.driver_data = UNCORE_PCI_DEV_DATA(SNB_PCI_UNCORE_IMC, 0),
},
{ /* end: all zeroes */ },
};
static struct pci_driver snb_uncore_pci_driver = {
.name = "snb_uncore",
.id_table = snb_uncore_pci_ids,
@ -501,6 +510,11 @@ static struct pci_driver hsw_uncore_pci_driver = {
.id_table = hsw_uncore_pci_ids,
};
static struct pci_driver bdw_uncore_pci_driver = {
.name = "bdw_uncore",
.id_table = bdw_uncore_pci_ids,
};
struct imc_uncore_pci_dev {
__u32 pci_id;
struct pci_driver *driver;
@ -514,6 +528,7 @@ static const struct imc_uncore_pci_dev desktop_imc_pci_ids[] = {
IMC_DEV(IVB_E3_IMC, &ivb_uncore_pci_driver), /* Xeon E3-1200 v2/3rd Gen Core processor */
IMC_DEV(HSW_IMC, &hsw_uncore_pci_driver), /* 4th Gen Core Processor */
IMC_DEV(HSW_U_IMC, &hsw_uncore_pci_driver), /* 4th Gen Core ULT Mobile Processor */
IMC_DEV(BDW_IMC, &bdw_uncore_pci_driver), /* 5th Gen Core U */
{ /* end marker */ }
};
@ -561,6 +576,11 @@ int hsw_uncore_pci_init(void)
return imc_uncore_pci_init();
}
int bdw_uncore_pci_init(void)
{
return imc_uncore_pci_init();
}
/* end of Sandy Bridge uncore support */
/* Nehalem uncore support */