perf/x86/intel: Add Broadwell core support

Add Broadwell support for Broadwell to perf.

The basic support is very similar to Haswell. We use the new cache
event list added for Haswell earlier. The only differences
are a few bits related to remote nodes. To avoid an extra,
mostly identical, table these are patched up in the initialization code.

The constraint list has one new event that needs to be handled over Haswell.

Includes code and testing from Kan Liang.

Signed-off-by: Andi Kleen <ak@linux.intel.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1424225886-18652-2-git-send-email-andi@firstfloor.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>

diff --git a/arch/x86/kernel/cpu/perf_event_intel.c b/arch/x86/kernel/cpu/perf_event_intel.c
index 5ef64bf88ecd128bd2d93fe059701b25ebd87f30..28838536a9f74e897a38a7256ba3fb35726e3c70 100644 (file)
--- a/arch/x86/kernel/cpu/perf_event_intel.c
+++ b/arch/x86/kernel/cpu/perf_event_intel.c
@@ -220,6 +220,15 @@ static struct event_constraint intel_hsw_event_constraints[] = {
        EVENT_CONSTRAINT_END
 };
 
+struct event_constraint intel_bdw_event_constraints[] = {
+       FIXED_EVENT_CONSTRAINT(0x00c0, 0),      /* INST_RETIRED.ANY */
+       FIXED_EVENT_CONSTRAINT(0x003c, 1),      /* CPU_CLK_UNHALTED.CORE */
+       FIXED_EVENT_CONSTRAINT(0x0300, 2),      /* CPU_CLK_UNHALTED.REF */
+       INTEL_UEVENT_CONSTRAINT(0x148, 0x4),    /* L1D_PEND_MISS.PENDING */
+       INTEL_EVENT_CONSTRAINT(0xa3, 0x4),      /* CYCLE_ACTIVITY.* */
+       EVENT_CONSTRAINT_END
+};
+
 static u64 intel_pmu_event_map(int hw_event)
 {
        return intel_perfmon_event_map[hw_event];
@@ -453,6 +462,12 @@ static __initconst const u64 snb_hw_cache_event_ids
                                         HSW_L3_MISS_REMOTE_HOP1|HSW_L3_MISS_REMOTE_HOP2P)
 #define HSW_LLC_ACCESS                 HSW_ANY_RESPONSE
 
+#define BDW_L3_MISS_LOCAL              BIT(26)
+#define BDW_L3_MISS                    (BDW_L3_MISS_LOCAL| \
+                                        HSW_L3_MISS_REMOTE_HOP0|HSW_L3_MISS_REMOTE_HOP1| \
+                                        HSW_L3_MISS_REMOTE_HOP2P)
+
+
 static __initconst const u64 hsw_hw_cache_event_ids
                                [PERF_COUNT_HW_CACHE_MAX]
                                [PERF_COUNT_HW_CACHE_OP_MAX]
@@ -2730,6 +2745,38 @@ __init int intel_pmu_init(void)
                pr_cont("Haswell events, ");
                break;
 
+       case 61: /* 14nm Broadwell Core-M */
+       case 86: /* 14nm Broadwell Xeon D */
+               x86_pmu.late_ack = true;
+               memcpy(hw_cache_event_ids, hsw_hw_cache_event_ids, sizeof(hw_cache_event_ids));
+               memcpy(hw_cache_extra_regs, hsw_hw_cache_extra_regs, sizeof(hw_cache_extra_regs));
+
+               /* L3_MISS_LOCAL_DRAM is BIT(26) in Broadwell */
+               hw_cache_extra_regs[C(LL)][C(OP_READ)][C(RESULT_MISS)] = HSW_DEMAND_READ |
+                                                                        BDW_L3_MISS|HSW_SNOOP_DRAM;
+               hw_cache_extra_regs[C(LL)][C(OP_WRITE)][C(RESULT_MISS)] = HSW_DEMAND_WRITE|BDW_L3_MISS|
+                                                                         HSW_SNOOP_DRAM;
+               hw_cache_extra_regs[C(NODE)][C(OP_READ)][C(RESULT_ACCESS)] = HSW_DEMAND_READ|
+                                                                            BDW_L3_MISS_LOCAL|HSW_SNOOP_DRAM;
+               hw_cache_extra_regs[C(NODE)][C(OP_WRITE)][C(RESULT_ACCESS)] = HSW_DEMAND_WRITE|
+                                                                             BDW_L3_MISS_LOCAL|HSW_SNOOP_DRAM;
+
+               intel_pmu_lbr_init_snb();
+
+               x86_pmu.event_constraints = intel_bdw_event_constraints;
+               x86_pmu.pebs_constraints = intel_hsw_pebs_event_constraints;
+               x86_pmu.extra_regs = intel_snbep_extra_regs;
+               x86_pmu.pebs_aliases = intel_pebs_aliases_snb;
+               /* all extra regs are per-cpu when HT is on */
+               x86_pmu.er_flags |= ERF_HAS_RSP_1;
+               x86_pmu.er_flags |= ERF_NO_HT_SHARING;
+
+               x86_pmu.hw_config = hsw_hw_config;
+               x86_pmu.get_event_constraints = hsw_get_event_constraints;
+               x86_pmu.cpu_events = hsw_events_attrs;
+               pr_cont("Broadwell events, ");
+               break;
+
        default:
                switch (x86_pmu.version) {
                case 1: