]> git.baikalelectronics.ru Git - kernel.git/commit
perf/x86/intel/uncore: Add Knights Landing uncore PMU support
authorHarish Chegondi <harish.chegondi@intel.com>
Mon, 7 Dec 2015 22:32:32 +0000 (14:32 -0800)
committerIngo Molnar <mingo@kernel.org>
Wed, 6 Jan 2016 10:15:38 +0000 (11:15 +0100)
commitabccc295ac33a536000ca62f6be7789412ecc55e
tree5045d78c508e382236f62c405debad471710b5ad
parent70ef09d3ae2722a096705ff564d4cb5ae0f6042e
perf/x86/intel/uncore: Add Knights Landing uncore PMU support

Knights Landing uncore performance monitoring (perfmon) is derived from
Haswell-EP uncore perfmon with several differences. One notable difference
is in PCI device IDs. Knights Landing uses common PCI device ID for
multiple instances of an uncore PMU device type. In Haswell-EP, each
instance of a PMU device type has a unique device ID.

Knights Landing uncore components that have performance monitoring units
are UBOX, CHA, EDC, MC, M2PCIe, IRP and PCU. Perfmon registers in EDC, MC,
IRP, and M2PCIe reside in the PCIe configuration space. Perfmon registers
in UBOX, CHA and PCU are accessed via the MSR interface.

For more details, please refer to the public document:

  https://software.intel.com/sites/default/files/managed/15/8d/IntelXeonPhi%E2%84%A2x200ProcessorPerformanceMonitoringReferenceManual_Volume1_Registers_v0%206.pdf

Signed-off-by: Harish Chegondi <harish.chegondi@intel.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Andi Kleen <andi.kleen@intel.com>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Harish Chegondi <harish.chegondi@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Kan Liang <kan.liang@intel.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Lukasz Anaczkowski <lukasz.anaczkowski@intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Vince Weaver <vincent.weaver@maine.edu>
Link: http://lkml.kernel.org/r/8ac513981264c3eb10343a3f523f19cc5a2d12fe.1449470704.git.harish.chegondi@intel.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
arch/x86/kernel/cpu/perf_event_intel_uncore.c
arch/x86/kernel/cpu/perf_event_intel_uncore.h
arch/x86/kernel/cpu/perf_event_intel_uncore_snb.c
arch/x86/kernel/cpu/perf_event_intel_uncore_snbep.c