system/linux
system/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux synced 2024-10-05 19:02:12 +00:00
Code Issues Packages Projects Releases Wiki Activity

perf/x86/intel/uncore: Fix IRP uncore register offsets on Haswell EP

Browse source 
The counter register offsets for the IRP box PMU for Haswell-EP
were incorrect. The offsets actually changed over IvyBridge EP.

Fix them to the correct values. For this we need to fork the read
function from the IVB and use an own counter array.

Tested-by: patrick.lu@intel.com
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Arnaldo Carvalho de Melo <acme@kernel.org>
Link: http://lkml.kernel.org/r/1415062828-19759-3-git-send-email-andi@firstfloor.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
This commit is contained in:
Andi Kleen 2014-11-03 17:00:27 -08:00 committed by Ingo Molnar
parent 226424eee8
commit 41a134a583
1 changed files with 15 additions and 1 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

16
arch/x86/kernel/cpu/perf_event_intel_uncore_snbep.c
View file

@ -2025,13 +2025,27 @@ static struct intel_uncore_type hswep_uncore_imc = {
SNBEP_UNCORE_PCI_COMMON_INIT(),
};
static unsigned hswep_uncore_irp_ctrs[] = {0xa0, 0xa8, 0xb0, 0xb8};
static u64 hswep_uncore_irp_read_counter(struct intel_uncore_box *box, struct perf_event *event)
{
struct pci_dev *pdev = box->pci_dev;
struct hw_perf_event *hwc = &event->hw;
u64 count = 0;
pci_read_config_dword(pdev, hswep_uncore_irp_ctrs[hwc->idx], (u32 *)&count);
pci_read_config_dword(pdev, hswep_uncore_irp_ctrs[hwc->idx] + 4, (u32 *)&count + 1);
return count;
}
static struct intel_uncore_ops hswep_uncore_irp_ops = {
.init_box = snbep_uncore_pci_init_box,
.disable_box = snbep_uncore_pci_disable_box,
.enable_box = snbep_uncore_pci_enable_box,
.disable_event = ivbep_uncore_irp_disable_event,
.enable_event = ivbep_uncore_irp_enable_event,
.read_counter = ivbep_uncore_irp_read_counter,
.read_counter = hswep_uncore_irp_read_counter,
};
static struct intel_uncore_type hswep_uncore_irp = {