Commit e40ed154 authored Nov 17, 2016 by Janakarajan Natarajan Committed by Ingo Molnar Nov 18, 2016

perf/x86: Add perf support for AMD family-17h processors



This patch enables perf core PMU support for the new AMD family-17h processors.

In family-17h, there is no PMC-event constraint. All events, irrespective of
the type, can be measured using any of the six generic performance counters.

Signed-off-by: Janakarajan Natarajan <Janakarajan.Natarajan@amd.com>
Acked-by: Borislav Petkov <bp@suse.de>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Arnaldo Carvalho de Melo <acme@kernel.org>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Vince Weaver <vincent.weaver@maine.edu>
Link: http://lkml.kernel.org/r/1479399306-13375-1-git-send-email-Janakarajan.Natarajan@amd.com


Signed-off-by: Ingo Molnar <mingo@kernel.org>

parent c499336c

arch/x86/events/amd/core.c

+7 −1

Original line number	Diff line number	Diff line
		@@ -662,7 +662,13 @@ static int __init amd_core_pmu_init(void)
		pr_cont("Fam15h ");
		x86_pmu.get_event_constraints = amd_get_event_constraints_f15h;
		break;

		case 0x17:
		pr_cont("Fam17h ");
		/*
		* In family 17h, there are no event constraints in the PMC hardware.
		* We fallback to using default amd_get_event_constraints.
		*/
		break;
		default:
		pr_err("core perfctr but no constraints; unknown hardware!\n");
		return -ENODEV;