perf/x86/amd: Add event map for AMD Family 17h

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: d7ada0d24076 ("perf/x86: Add perf support for AMD family-17h processors")
[ Improved the formatting a bit. ]
Signed-off-by: Ingo Molnar <mingo@kernel.org>

diff --git a/arch/x86/events/amd/core.c b/arch/x86/events/amd/core.c
index 0ecfac84ba9111306faeb900375b6402d52afa07..d45f3fbd232ea7c34ccf1ceda5f97ce8fefd48b8 100644 (file)
--- a/arch/x86/events/amd/core.c
+++ b/arch/x86/events/amd/core.c
@@ -117,22 +117,39 @@ static __initconst const u64 amd_hw_cache_event_ids
 };
 
 /*
- * 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];
 }