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From:   Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To:     linux-kernel@vger.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        stable@vger.kernel.org, Kim Phillips <kim.phillips@amd.com>,
        Alexander Shishkin <alexander.shishkin@linux.intel.com>,
        Arnaldo Carvalho de Melo <acme@kernel.org>,
        Borislav Petkov <bp@alien8.de>,
        "H. Peter Anvin" <hpa@zytor.com>,
        Janakarajan Natarajan <Janakarajan.Natarajan@amd.com>,
        Jiri Olsa <jolsa@redhat.com>,
        Linus Torvalds <torvalds@linux-foundation.org>,
        =?UTF-8?q?Martin=20Li=C5=A1ka?= <mliska@suse.cz>,
        Namhyung Kim <namhyung@kernel.org>,
        Peter Zijlstra <peterz@infradead.org>, Pu Wen <puwen@hygon.cn>,
        Suravee Suthikulpanit <Suravee.Suthikulpanit@amd.com>,
        Thomas Gleixner <tglx@linutronix.de>,
        Ingo Molnar <mingo@kernel.org>
Subject: [PATCH 4.9 37/44] perf/x86/amd: Add event map for AMD Family 17h
Date:   Wed, 24 Apr 2019 19:10:15 +0200
Message-Id: <20190424170900.511642990@linuxfoundation.org>
In-Reply-To: <20190424170839.924291114@linuxfoundation.org>
References: <20190424170839.924291114@linuxfoundation.org>
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From: Kim Phillips <kim.phillips@amd.com>

commit 3fe3331bb285700ab2253dbb07f8e478fcea2f1b upstream.

Family 17h differs from prior families by:

 - Does not support an L2 cache miss event
 - It has re-enumerated PMC counters for:
   - L2 cache references
   - front & back end stalled cycles

So we add a new amd_f17h_perfmon_event_map[] so that the generic
perf event names will resolve to the correct h/w events on
family 17h and above processors.

Reference sections 2.1.13.3.3 (stalls) and 2.1.13.3.6 (L2):

  https://www.amd.com/system/files/TechDocs/54945_PPR_Family_17h_Models_00h-0Fh.pdf

Signed-off-by: Kim Phillips <kim.phillips@amd.com>
Cc: <stable@vger.kernel.org> # v4.9+
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Arnaldo Carvalho de Melo <acme@kernel.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Janakarajan Natarajan <Janakarajan.Natarajan@amd.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Martin Liška <mliska@suse.cz>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Pu Wen <puwen@hygon.cn>
Cc: Suravee Suthikulpanit <Suravee.Suthikulpanit@amd.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-kernel@vger.kernel.org
Fixes: e40ed1542dd7 ("perf/x86: Add perf support for AMD family-17h processors")
[ Improved the formatting a bit. ]
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 arch/x86/events/amd/core.c |   35 ++++++++++++++++++++++++++---------
 1 file changed, 26 insertions(+), 9 deletions(-)

--- a/arch/x86/events/amd/core.c
+++ b/arch/x86/events/amd/core.c
@@ -113,22 +113,39 @@ static __initconst const u64 amd_hw_cach
 };
 
 /*
- * AMD Performance Monitor K7 and later.
+ * AMD Performance Monitor K7 and later, up to and including Family 16h:
  */
 static const u64 amd_perfmon_event_map[PERF_COUNT_HW_MAX] =
 {
-  [PERF_COUNT_HW_CPU_CYCLES]			= 0x0076,
-  [PERF_COUNT_HW_INSTRUCTIONS]			= 0x00c0,
-  [PERF_COUNT_HW_CACHE_REFERENCES]		= 0x077d,
-  [PERF_COUNT_HW_CACHE_MISSES]			= 0x077e,
-  [PERF_COUNT_HW_BRANCH_INSTRUCTIONS]		= 0x00c2,
-  [PERF_COUNT_HW_BRANCH_MISSES]			= 0x00c3,
-  [PERF_COUNT_HW_STALLED_CYCLES_FRONTEND]	= 0x00d0, /* "Decoder empty" event */
-  [PERF_COUNT_HW_STALLED_CYCLES_BACKEND]	= 0x00d1, /* "Dispatch stalls" event */
+	[PERF_COUNT_HW_CPU_CYCLES]		= 0x0076,
+	[PERF_COUNT_HW_INSTRUCTIONS]		= 0x00c0,
+	[PERF_COUNT_HW_CACHE_REFERENCES]	= 0x077d,
+	[PERF_COUNT_HW_CACHE_MISSES]		= 0x077e,
+	[PERF_COUNT_HW_BRANCH_INSTRUCTIONS]	= 0x00c2,
+	[PERF_COUNT_HW_BRANCH_MISSES]		= 0x00c3,
+	[PERF_COUNT_HW_STALLED_CYCLES_FRONTEND]	= 0x00d0, /* "Decoder empty" event */
+	[PERF_COUNT_HW_STALLED_CYCLES_BACKEND]	= 0x00d1, /* "Dispatch stalls" event */
+};
+
+/*
+ * AMD Performance Monitor Family 17h and later:
+ */
+static const u64 amd_f17h_perfmon_event_map[PERF_COUNT_HW_MAX] =
+{
+	[PERF_COUNT_HW_CPU_CYCLES]		= 0x0076,
+	[PERF_COUNT_HW_INSTRUCTIONS]		= 0x00c0,
+	[PERF_COUNT_HW_CACHE_REFERENCES]	= 0xff60,
+	[PERF_COUNT_HW_BRANCH_INSTRUCTIONS]	= 0x00c2,
+	[PERF_COUNT_HW_BRANCH_MISSES]		= 0x00c3,
+	[PERF_COUNT_HW_STALLED_CYCLES_FRONTEND]	= 0x0287,
+	[PERF_COUNT_HW_STALLED_CYCLES_BACKEND]	= 0x0187,
 };
 
 static u64 amd_pmu_event_map(int hw_event)
 {
+	if (boot_cpu_data.x86 >= 0x17)
+		return amd_f17h_perfmon_event_map[hw_event];
+
 	return amd_perfmon_event_map[hw_event];
 }