From e40ed1542dd779e5037a22c6b534e57127472365 Mon Sep 17 00:00:00 2001
From: Janakarajan Natarajan <Janakarajan.Natarajan@amd.com>
Date: Thu, 17 Nov 2016 10:15:06 -0600
Subject: [PATCH] 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>
---
arch/x86/events/amd/core.c | 8 +++++++-
1 file changed, 7 insertions(+), 1 deletion(-)
diff --git a/arch/x86/events/amd/core.c b/arch/x86/events/amd/core.c
index f5f4b3fbbbc29..afb222b63caeb 100644
--- a/arch/x86/events/amd/core.c
+++ b/arch/x86/events/amd/core.c
@@ -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;
--
2.30.2