endif
obj-$(CONFIG_CPU_SUP_INTEL) += intel/core.o intel/bts.o intel/cqm.o
obj-$(CONFIG_CPU_SUP_INTEL) += intel/cstate.o intel/ds.o intel/knc.o
-obj-$(CONFIG_CPU_SUP_INTEL) += intel/lbr.o intel/pt.o intel/rapl.o
+obj-$(CONFIG_CPU_SUP_INTEL) += intel/lbr.o intel/p4.o intel/pt.o
+obj-$(CONFIG_CPU_SUP_INTEL) += intel/rapl.o
obj-$(CONFIG_PERF_EVENTS_INTEL_UNCORE) += intel/uncore.o intel/uncore_nhmex.o
obj-$(CONFIG_PERF_EVENTS_INTEL_UNCORE) += intel/uncore_snb.o intel/uncore_snbep.o
--- /dev/null
+/*
+ * Netburst Performance Events (P4, old Xeon)
+ *
+ * Copyright (C) 2010 Parallels, Inc., Cyrill Gorcunov <gorcunov@openvz.org>
+ * Copyright (C) 2010 Intel Corporation, Lin Ming <ming.m.lin@intel.com>
+ *
+ * For licencing details see kernel-base/COPYING
+ */
+
+#include <linux/perf_event.h>
+
+#include <asm/perf_event_p4.h>
+#include <asm/hardirq.h>
+#include <asm/apic.h>
+
+#include "../../kernel/cpu/perf_event.h"
+
+#define P4_CNTR_LIMIT 3
+/*
+ * array indices: 0,1 - HT threads, used with HT enabled cpu
+ */
+struct p4_event_bind {
+ unsigned int opcode; /* Event code and ESCR selector */
+ unsigned int escr_msr[2]; /* ESCR MSR for this event */
+ unsigned int escr_emask; /* valid ESCR EventMask bits */
+ unsigned int shared; /* event is shared across threads */
+ char cntr[2][P4_CNTR_LIMIT]; /* counter index (offset), -1 on abscence */
+};
+
+struct p4_pebs_bind {
+ unsigned int metric_pebs;
+ unsigned int metric_vert;
+};
+
+/* it sets P4_PEBS_ENABLE_UOP_TAG as well */
+#define P4_GEN_PEBS_BIND(name, pebs, vert) \
+ [P4_PEBS_METRIC__##name] = { \
+ .metric_pebs = pebs | P4_PEBS_ENABLE_UOP_TAG, \
+ .metric_vert = vert, \
+ }
+
+/*
+ * note we have P4_PEBS_ENABLE_UOP_TAG always set here
+ *
+ * it's needed for mapping P4_PEBS_CONFIG_METRIC_MASK bits of
+ * event configuration to find out which values are to be
+ * written into MSR_IA32_PEBS_ENABLE and MSR_P4_PEBS_MATRIX_VERT
+ * resgisters
+ */
+static struct p4_pebs_bind p4_pebs_bind_map[] = {
+ P4_GEN_PEBS_BIND(1stl_cache_load_miss_retired, 0x0000001, 0x0000001),
+ P4_GEN_PEBS_BIND(2ndl_cache_load_miss_retired, 0x0000002, 0x0000001),
+ P4_GEN_PEBS_BIND(dtlb_load_miss_retired, 0x0000004, 0x0000001),
+ P4_GEN_PEBS_BIND(dtlb_store_miss_retired, 0x0000004, 0x0000002),
+ P4_GEN_PEBS_BIND(dtlb_all_miss_retired, 0x0000004, 0x0000003),
+ P4_GEN_PEBS_BIND(tagged_mispred_branch, 0x0018000, 0x0000010),
+ P4_GEN_PEBS_BIND(mob_load_replay_retired, 0x0000200, 0x0000001),
+ P4_GEN_PEBS_BIND(split_load_retired, 0x0000400, 0x0000001),
+ P4_GEN_PEBS_BIND(split_store_retired, 0x0000400, 0x0000002),
+};
+
+/*
+ * Note that we don't use CCCR1 here, there is an
+ * exception for P4_BSQ_ALLOCATION but we just have
+ * no workaround
+ *
+ * consider this binding as resources which particular
+ * event may borrow, it doesn't contain EventMask,
+ * Tags and friends -- they are left to a caller
+ */
+static struct p4_event_bind p4_event_bind_map[] = {
+ [P4_EVENT_TC_DELIVER_MODE] = {
+ .opcode = P4_OPCODE(P4_EVENT_TC_DELIVER_MODE),
+ .escr_msr = { MSR_P4_TC_ESCR0, MSR_P4_TC_ESCR1 },
+ .escr_emask =
+ P4_ESCR_EMASK_BIT(P4_EVENT_TC_DELIVER_MODE, DD) |
+ P4_ESCR_EMASK_BIT(P4_EVENT_TC_DELIVER_MODE, DB) |
+ P4_ESCR_EMASK_BIT(P4_EVENT_TC_DELIVER_MODE, DI) |
+ P4_ESCR_EMASK_BIT(P4_EVENT_TC_DELIVER_MODE, BD) |
+ P4_ESCR_EMASK_BIT(P4_EVENT_TC_DELIVER_MODE, BB) |
+ P4_ESCR_EMASK_BIT(P4_EVENT_TC_DELIVER_MODE, BI) |
+ P4_ESCR_EMASK_BIT(P4_EVENT_TC_DELIVER_MODE, ID),
+ .shared = 1,
+ .cntr = { {4, 5, -1}, {6, 7, -1} },
+ },
+ [P4_EVENT_BPU_FETCH_REQUEST] = {
+ .opcode = P4_OPCODE(P4_EVENT_BPU_FETCH_REQUEST),
+ .escr_msr = { MSR_P4_BPU_ESCR0, MSR_P4_BPU_ESCR1 },
+ .escr_emask =
+ P4_ESCR_EMASK_BIT(P4_EVENT_BPU_FETCH_REQUEST, TCMISS),
+ .cntr = { {0, -1, -1}, {2, -1, -1} },
+ },
+ [P4_EVENT_ITLB_REFERENCE] = {
+ .opcode = P4_OPCODE(P4_EVENT_ITLB_REFERENCE),
+ .escr_msr = { MSR_P4_ITLB_ESCR0, MSR_P4_ITLB_ESCR1 },
+ .escr_emask =
+ P4_ESCR_EMASK_BIT(P4_EVENT_ITLB_REFERENCE, HIT) |
+ P4_ESCR_EMASK_BIT(P4_EVENT_ITLB_REFERENCE, MISS) |
+ P4_ESCR_EMASK_BIT(P4_EVENT_ITLB_REFERENCE, HIT_UK),
+ .cntr = { {0, -1, -1}, {2, -1, -1} },
+ },
+ [P4_EVENT_MEMORY_CANCEL] = {
+ .opcode = P4_OPCODE(P4_EVENT_MEMORY_CANCEL),
+ .escr_msr = { MSR_P4_DAC_ESCR0, MSR_P4_DAC_ESCR1 },
+ .escr_emask =
+ P4_ESCR_EMASK_BIT(P4_EVENT_MEMORY_CANCEL, ST_RB_FULL) |
+ P4_ESCR_EMASK_BIT(P4_EVENT_MEMORY_CANCEL, 64K_CONF),
+ .cntr = { {8, 9, -1}, {10, 11, -1} },
+ },
+ [P4_EVENT_MEMORY_COMPLETE] = {
+ .opcode = P4_OPCODE(P4_EVENT_MEMORY_COMPLETE),
+ .escr_msr = { MSR_P4_SAAT_ESCR0 , MSR_P4_SAAT_ESCR1 },
+ .escr_emask =
+ P4_ESCR_EMASK_BIT(P4_EVENT_MEMORY_COMPLETE, LSC) |
+ P4_ESCR_EMASK_BIT(P4_EVENT_MEMORY_COMPLETE, SSC),
+ .cntr = { {8, 9, -1}, {10, 11, -1} },
+ },
+ [P4_EVENT_LOAD_PORT_REPLAY] = {
+ .opcode = P4_OPCODE(P4_EVENT_LOAD_PORT_REPLAY),
+ .escr_msr = { MSR_P4_SAAT_ESCR0, MSR_P4_SAAT_ESCR1 },
+ .escr_emask =
+ P4_ESCR_EMASK_BIT(P4_EVENT_LOAD_PORT_REPLAY, SPLIT_LD),
+ .cntr = { {8, 9, -1}, {10, 11, -1} },
+ },
+ [P4_EVENT_STORE_PORT_REPLAY] = {
+ .opcode = P4_OPCODE(P4_EVENT_STORE_PORT_REPLAY),
+ .escr_msr = { MSR_P4_SAAT_ESCR0 , MSR_P4_SAAT_ESCR1 },
+ .escr_emask =
+ P4_ESCR_EMASK_BIT(P4_EVENT_STORE_PORT_REPLAY, SPLIT_ST),
+ .cntr = { {8, 9, -1}, {10, 11, -1} },
+ },
+ [P4_EVENT_MOB_LOAD_REPLAY] = {
+ .opcode = P4_OPCODE(P4_EVENT_MOB_LOAD_REPLAY),
+ .escr_msr = { MSR_P4_MOB_ESCR0, MSR_P4_MOB_ESCR1 },
+ .escr_emask =
+ P4_ESCR_EMASK_BIT(P4_EVENT_MOB_LOAD_REPLAY, NO_STA) |
+ P4_ESCR_EMASK_BIT(P4_EVENT_MOB_LOAD_REPLAY, NO_STD) |
+ P4_ESCR_EMASK_BIT(P4_EVENT_MOB_LOAD_REPLAY, PARTIAL_DATA) |
+ P4_ESCR_EMASK_BIT(P4_EVENT_MOB_LOAD_REPLAY, UNALGN_ADDR),
+ .cntr = { {0, -1, -1}, {2, -1, -1} },
+ },
+ [P4_EVENT_PAGE_WALK_TYPE] = {
+ .opcode = P4_OPCODE(P4_EVENT_PAGE_WALK_TYPE),
+ .escr_msr = { MSR_P4_PMH_ESCR0, MSR_P4_PMH_ESCR1 },
+ .escr_emask =
+ P4_ESCR_EMASK_BIT(P4_EVENT_PAGE_WALK_TYPE, DTMISS) |
+ P4_ESCR_EMASK_BIT(P4_EVENT_PAGE_WALK_TYPE, ITMISS),
+ .shared = 1,
+ .cntr = { {0, -1, -1}, {2, -1, -1} },
+ },
+ [P4_EVENT_BSQ_CACHE_REFERENCE] = {
+ .opcode = P4_OPCODE(P4_EVENT_BSQ_CACHE_REFERENCE),
+ .escr_msr = { MSR_P4_BSU_ESCR0, MSR_P4_BSU_ESCR1 },
+ .escr_emask =
+ P4_ESCR_EMASK_BIT(P4_EVENT_BSQ_CACHE_REFERENCE, RD_2ndL_HITS) |
+ P4_ESCR_EMASK_BIT(P4_EVENT_BSQ_CACHE_REFERENCE, RD_2ndL_HITE) |
+ P4_ESCR_EMASK_BIT(P4_EVENT_BSQ_CACHE_REFERENCE, RD_2ndL_HITM) |
+ P4_ESCR_EMASK_BIT(P4_EVENT_BSQ_CACHE_REFERENCE, RD_3rdL_HITS) |
+ P4_ESCR_EMASK_BIT(P4_EVENT_BSQ_CACHE_REFERENCE, RD_3rdL_HITE) |
+ P4_ESCR_EMASK_BIT(P4_EVENT_BSQ_CACHE_REFERENCE, RD_3rdL_HITM) |
+ P4_ESCR_EMASK_BIT(P4_EVENT_BSQ_CACHE_REFERENCE, RD_2ndL_MISS) |
+ P4_ESCR_EMASK_BIT(P4_EVENT_BSQ_CACHE_REFERENCE, RD_3rdL_MISS) |
+ P4_ESCR_EMASK_BIT(P4_EVENT_BSQ_CACHE_REFERENCE, WR_2ndL_MISS),
+ .cntr = { {0, -1, -1}, {2, -1, -1} },
+ },
+ [P4_EVENT_IOQ_ALLOCATION] = {
+ .opcode = P4_OPCODE(P4_EVENT_IOQ_ALLOCATION),
+ .escr_msr = { MSR_P4_FSB_ESCR0, MSR_P4_FSB_ESCR1 },
+ .escr_emask =
+ P4_ESCR_EMASK_BIT(P4_EVENT_IOQ_ALLOCATION, DEFAULT) |
+ P4_ESCR_EMASK_BIT(P4_EVENT_IOQ_ALLOCATION, ALL_READ) |
+ P4_ESCR_EMASK_BIT(P4_EVENT_IOQ_ALLOCATION, ALL_WRITE) |
+ P4_ESCR_EMASK_BIT(P4_EVENT_IOQ_ALLOCATION, MEM_UC) |
+ P4_ESCR_EMASK_BIT(P4_EVENT_IOQ_ALLOCATION, MEM_WC) |
+ P4_ESCR_EMASK_BIT(P4_EVENT_IOQ_ALLOCATION, MEM_WT) |
+ P4_ESCR_EMASK_BIT(P4_EVENT_IOQ_ALLOCATION, MEM_WP) |
+ P4_ESCR_EMASK_BIT(P4_EVENT_IOQ_ALLOCATION, MEM_WB) |
+ P4_ESCR_EMASK_BIT(P4_EVENT_IOQ_ALLOCATION, OWN) |
+ P4_ESCR_EMASK_BIT(P4_EVENT_IOQ_ALLOCATION, OTHER) |
+ P4_ESCR_EMASK_BIT(P4_EVENT_IOQ_ALLOCATION, PREFETCH),
+ .cntr = { {0, -1, -1}, {2, -1, -1} },
+ },
+ [P4_EVENT_IOQ_ACTIVE_ENTRIES] = { /* shared ESCR */
+ .opcode = P4_OPCODE(P4_EVENT_IOQ_ACTIVE_ENTRIES),
+ .escr_msr = { MSR_P4_FSB_ESCR1, MSR_P4_FSB_ESCR1 },
+ .escr_emask =
+ P4_ESCR_EMASK_BIT(P4_EVENT_IOQ_ACTIVE_ENTRIES, DEFAULT) |
+ P4_ESCR_EMASK_BIT(P4_EVENT_IOQ_ACTIVE_ENTRIES, ALL_READ) |
+ P4_ESCR_EMASK_BIT(P4_EVENT_IOQ_ACTIVE_ENTRIES, ALL_WRITE) |
+ P4_ESCR_EMASK_BIT(P4_EVENT_IOQ_ACTIVE_ENTRIES, MEM_UC) |
+ P4_ESCR_EMASK_BIT(P4_EVENT_IOQ_ACTIVE_ENTRIES, MEM_WC) |
+ P4_ESCR_EMASK_BIT(P4_EVENT_IOQ_ACTIVE_ENTRIES, MEM_WT) |
+ P4_ESCR_EMASK_BIT(P4_EVENT_IOQ_ACTIVE_ENTRIES, MEM_WP) |
+ P4_ESCR_EMASK_BIT(P4_EVENT_IOQ_ACTIVE_ENTRIES, MEM_WB) |
+ P4_ESCR_EMASK_BIT(P4_EVENT_IOQ_ACTIVE_ENTRIES, OWN) |
+ P4_ESCR_EMASK_BIT(P4_EVENT_IOQ_ACTIVE_ENTRIES, OTHER) |
+ P4_ESCR_EMASK_BIT(P4_EVENT_IOQ_ACTIVE_ENTRIES, PREFETCH),
+ .cntr = { {2, -1, -1}, {3, -1, -1} },
+ },
+ [P4_EVENT_FSB_DATA_ACTIVITY] = {
+ .opcode = P4_OPCODE(P4_EVENT_FSB_DATA_ACTIVITY),
+ .escr_msr = { MSR_P4_FSB_ESCR0, MSR_P4_FSB_ESCR1 },
+ .escr_emask =
+ P4_ESCR_EMASK_BIT(P4_EVENT_FSB_DATA_ACTIVITY, DRDY_DRV) |
+ P4_ESCR_EMASK_BIT(P4_EVENT_FSB_DATA_ACTIVITY, DRDY_OWN) |
+ P4_ESCR_EMASK_BIT(P4_EVENT_FSB_DATA_ACTIVITY, DRDY_OTHER) |
+ P4_ESCR_EMASK_BIT(P4_EVENT_FSB_DATA_ACTIVITY, DBSY_DRV) |
+ P4_ESCR_EMASK_BIT(P4_EVENT_FSB_DATA_ACTIVITY, DBSY_OWN) |
+ P4_ESCR_EMASK_BIT(P4_EVENT_FSB_DATA_ACTIVITY, DBSY_OTHER),
+ .shared = 1,
+ .cntr = { {0, -1, -1}, {2, -1, -1} },
+ },
+ [P4_EVENT_BSQ_ALLOCATION] = { /* shared ESCR, broken CCCR1 */
+ .opcode = P4_OPCODE(P4_EVENT_BSQ_ALLOCATION),
+ .escr_msr = { MSR_P4_BSU_ESCR0, MSR_P4_BSU_ESCR0 },
+ .escr_emask =
+ P4_ESCR_EMASK_BIT(P4_EVENT_BSQ_ALLOCATION, REQ_TYPE0) |
+ P4_ESCR_EMASK_BIT(P4_EVENT_BSQ_ALLOCATION, REQ_TYPE1) |
+ P4_ESCR_EMASK_BIT(P4_EVENT_BSQ_ALLOCATION, REQ_LEN0) |
+ P4_ESCR_EMASK_BIT(P4_EVENT_BSQ_ALLOCATION, REQ_LEN1) |
+ P4_ESCR_EMASK_BIT(P4_EVENT_BSQ_ALLOCATION, REQ_IO_TYPE) |
+ P4_ESCR_EMASK_BIT(P4_EVENT_BSQ_ALLOCATION, REQ_LOCK_TYPE) |
+ P4_ESCR_EMASK_BIT(P4_EVENT_BSQ_ALLOCATION, REQ_CACHE_TYPE) |
+ P4_ESCR_EMASK_BIT(P4_EVENT_BSQ_ALLOCATION, REQ_SPLIT_TYPE) |
+ P4_ESCR_EMASK_BIT(P4_EVENT_BSQ_ALLOCATION, REQ_DEM_TYPE) |
+ P4_ESCR_EMASK_BIT(P4_EVENT_BSQ_ALLOCATION, REQ_ORD_TYPE) |
+ P4_ESCR_EMASK_BIT(P4_EVENT_BSQ_ALLOCATION, MEM_TYPE0) |
+ P4_ESCR_EMASK_BIT(P4_EVENT_BSQ_ALLOCATION, MEM_TYPE1) |
+ P4_ESCR_EMASK_BIT(P4_EVENT_BSQ_ALLOCATION, MEM_TYPE2),
+ .cntr = { {0, -1, -1}, {1, -1, -1} },
+ },
+ [P4_EVENT_BSQ_ACTIVE_ENTRIES] = { /* shared ESCR */
+ .opcode = P4_OPCODE(P4_EVENT_BSQ_ACTIVE_ENTRIES),
+ .escr_msr = { MSR_P4_BSU_ESCR1 , MSR_P4_BSU_ESCR1 },
+ .escr_emask =
+ P4_ESCR_EMASK_BIT(P4_EVENT_BSQ_ACTIVE_ENTRIES, REQ_TYPE0) |
+ P4_ESCR_EMASK_BIT(P4_EVENT_BSQ_ACTIVE_ENTRIES, REQ_TYPE1) |
+ P4_ESCR_EMASK_BIT(P4_EVENT_BSQ_ACTIVE_ENTRIES, REQ_LEN0) |
+ P4_ESCR_EMASK_BIT(P4_EVENT_BSQ_ACTIVE_ENTRIES, REQ_LEN1) |
+ P4_ESCR_EMASK_BIT(P4_EVENT_BSQ_ACTIVE_ENTRIES, REQ_IO_TYPE) |
+ P4_ESCR_EMASK_BIT(P4_EVENT_BSQ_ACTIVE_ENTRIES, REQ_LOCK_TYPE) |
+ P4_ESCR_EMASK_BIT(P4_EVENT_BSQ_ACTIVE_ENTRIES, REQ_CACHE_TYPE) |
+ P4_ESCR_EMASK_BIT(P4_EVENT_BSQ_ACTIVE_ENTRIES, REQ_SPLIT_TYPE) |
+ P4_ESCR_EMASK_BIT(P4_EVENT_BSQ_ACTIVE_ENTRIES, REQ_DEM_TYPE) |
+ P4_ESCR_EMASK_BIT(P4_EVENT_BSQ_ACTIVE_ENTRIES, REQ_ORD_TYPE) |
+ P4_ESCR_EMASK_BIT(P4_EVENT_BSQ_ACTIVE_ENTRIES, MEM_TYPE0) |
+ P4_ESCR_EMASK_BIT(P4_EVENT_BSQ_ACTIVE_ENTRIES, MEM_TYPE1) |
+ P4_ESCR_EMASK_BIT(P4_EVENT_BSQ_ACTIVE_ENTRIES, MEM_TYPE2),
+ .cntr = { {2, -1, -1}, {3, -1, -1} },
+ },
+ [P4_EVENT_SSE_INPUT_ASSIST] = {
+ .opcode = P4_OPCODE(P4_EVENT_SSE_INPUT_ASSIST),
+ .escr_msr = { MSR_P4_FIRM_ESCR0, MSR_P4_FIRM_ESCR1 },
+ .escr_emask =
+ P4_ESCR_EMASK_BIT(P4_EVENT_SSE_INPUT_ASSIST, ALL),
+ .shared = 1,
+ .cntr = { {8, 9, -1}, {10, 11, -1} },
+ },
+ [P4_EVENT_PACKED_SP_UOP] = {
+ .opcode = P4_OPCODE(P4_EVENT_PACKED_SP_UOP),
+ .escr_msr = { MSR_P4_FIRM_ESCR0, MSR_P4_FIRM_ESCR1 },
+ .escr_emask =
+ P4_ESCR_EMASK_BIT(P4_EVENT_PACKED_SP_UOP, ALL),
+ .shared = 1,
+ .cntr = { {8, 9, -1}, {10, 11, -1} },
+ },
+ [P4_EVENT_PACKED_DP_UOP] = {
+ .opcode = P4_OPCODE(P4_EVENT_PACKED_DP_UOP),
+ .escr_msr = { MSR_P4_FIRM_ESCR0, MSR_P4_FIRM_ESCR1 },
+ .escr_emask =
+ P4_ESCR_EMASK_BIT(P4_EVENT_PACKED_DP_UOP, ALL),
+ .shared = 1,
+ .cntr = { {8, 9, -1}, {10, 11, -1} },
+ },
+ [P4_EVENT_SCALAR_SP_UOP] = {
+ .opcode = P4_OPCODE(P4_EVENT_SCALAR_SP_UOP),
+ .escr_msr = { MSR_P4_FIRM_ESCR0, MSR_P4_FIRM_ESCR1 },
+ .escr_emask =
+ P4_ESCR_EMASK_BIT(P4_EVENT_SCALAR_SP_UOP, ALL),
+ .shared = 1,
+ .cntr = { {8, 9, -1}, {10, 11, -1} },
+ },
+ [P4_EVENT_SCALAR_DP_UOP] = {
+ .opcode = P4_OPCODE(P4_EVENT_SCALAR_DP_UOP),
+ .escr_msr = { MSR_P4_FIRM_ESCR0, MSR_P4_FIRM_ESCR1 },
+ .escr_emask =
+ P4_ESCR_EMASK_BIT(P4_EVENT_SCALAR_DP_UOP, ALL),
+ .shared = 1,
+ .cntr = { {8, 9, -1}, {10, 11, -1} },
+ },
+ [P4_EVENT_64BIT_MMX_UOP] = {
+ .opcode = P4_OPCODE(P4_EVENT_64BIT_MMX_UOP),
+ .escr_msr = { MSR_P4_FIRM_ESCR0, MSR_P4_FIRM_ESCR1 },
+ .escr_emask =
+ P4_ESCR_EMASK_BIT(P4_EVENT_64BIT_MMX_UOP, ALL),
+ .shared = 1,
+ .cntr = { {8, 9, -1}, {10, 11, -1} },
+ },
+ [P4_EVENT_128BIT_MMX_UOP] = {
+ .opcode = P4_OPCODE(P4_EVENT_128BIT_MMX_UOP),
+ .escr_msr = { MSR_P4_FIRM_ESCR0, MSR_P4_FIRM_ESCR1 },
+ .escr_emask =
+ P4_ESCR_EMASK_BIT(P4_EVENT_128BIT_MMX_UOP, ALL),
+ .shared = 1,
+ .cntr = { {8, 9, -1}, {10, 11, -1} },
+ },
+ [P4_EVENT_X87_FP_UOP] = {
+ .opcode = P4_OPCODE(P4_EVENT_X87_FP_UOP),
+ .escr_msr = { MSR_P4_FIRM_ESCR0, MSR_P4_FIRM_ESCR1 },
+ .escr_emask =
+ P4_ESCR_EMASK_BIT(P4_EVENT_X87_FP_UOP, ALL),
+ .shared = 1,
+ .cntr = { {8, 9, -1}, {10, 11, -1} },
+ },
+ [P4_EVENT_TC_MISC] = {
+ .opcode = P4_OPCODE(P4_EVENT_TC_MISC),
+ .escr_msr = { MSR_P4_TC_ESCR0, MSR_P4_TC_ESCR1 },
+ .escr_emask =
+ P4_ESCR_EMASK_BIT(P4_EVENT_TC_MISC, FLUSH),
+ .cntr = { {4, 5, -1}, {6, 7, -1} },
+ },
+ [P4_EVENT_GLOBAL_POWER_EVENTS] = {
+ .opcode = P4_OPCODE(P4_EVENT_GLOBAL_POWER_EVENTS),
+ .escr_msr = { MSR_P4_FSB_ESCR0, MSR_P4_FSB_ESCR1 },
+ .escr_emask =
+ P4_ESCR_EMASK_BIT(P4_EVENT_GLOBAL_POWER_EVENTS, RUNNING),
+ .cntr = { {0, -1, -1}, {2, -1, -1} },
+ },
+ [P4_EVENT_TC_MS_XFER] = {
+ .opcode = P4_OPCODE(P4_EVENT_TC_MS_XFER),
+ .escr_msr = { MSR_P4_MS_ESCR0, MSR_P4_MS_ESCR1 },
+ .escr_emask =
+ P4_ESCR_EMASK_BIT(P4_EVENT_TC_MS_XFER, CISC),
+ .cntr = { {4, 5, -1}, {6, 7, -1} },
+ },
+ [P4_EVENT_UOP_QUEUE_WRITES] = {
+ .opcode = P4_OPCODE(P4_EVENT_UOP_QUEUE_WRITES),
+ .escr_msr = { MSR_P4_MS_ESCR0, MSR_P4_MS_ESCR1 },
+ .escr_emask =
+ P4_ESCR_EMASK_BIT(P4_EVENT_UOP_QUEUE_WRITES, FROM_TC_BUILD) |
+ P4_ESCR_EMASK_BIT(P4_EVENT_UOP_QUEUE_WRITES, FROM_TC_DELIVER) |
+ P4_ESCR_EMASK_BIT(P4_EVENT_UOP_QUEUE_WRITES, FROM_ROM),
+ .cntr = { {4, 5, -1}, {6, 7, -1} },
+ },
+ [P4_EVENT_RETIRED_MISPRED_BRANCH_TYPE] = {
+ .opcode = P4_OPCODE(P4_EVENT_RETIRED_MISPRED_BRANCH_TYPE),
+ .escr_msr = { MSR_P4_TBPU_ESCR0 , MSR_P4_TBPU_ESCR0 },
+ .escr_emask =
+ P4_ESCR_EMASK_BIT(P4_EVENT_RETIRED_MISPRED_BRANCH_TYPE, CONDITIONAL) |
+ P4_ESCR_EMASK_BIT(P4_EVENT_RETIRED_MISPRED_BRANCH_TYPE, CALL) |
+ P4_ESCR_EMASK_BIT(P4_EVENT_RETIRED_MISPRED_BRANCH_TYPE, RETURN) |
+ P4_ESCR_EMASK_BIT(P4_EVENT_RETIRED_MISPRED_BRANCH_TYPE, INDIRECT),
+ .cntr = { {4, 5, -1}, {6, 7, -1} },
+ },
+ [P4_EVENT_RETIRED_BRANCH_TYPE] = {
+ .opcode = P4_OPCODE(P4_EVENT_RETIRED_BRANCH_TYPE),
+ .escr_msr = { MSR_P4_TBPU_ESCR0 , MSR_P4_TBPU_ESCR1 },
+ .escr_emask =
+ P4_ESCR_EMASK_BIT(P4_EVENT_RETIRED_BRANCH_TYPE, CONDITIONAL) |
+ P4_ESCR_EMASK_BIT(P4_EVENT_RETIRED_BRANCH_TYPE, CALL) |
+ P4_ESCR_EMASK_BIT(P4_EVENT_RETIRED_BRANCH_TYPE, RETURN) |
+ P4_ESCR_EMASK_BIT(P4_EVENT_RETIRED_BRANCH_TYPE, INDIRECT),
+ .cntr = { {4, 5, -1}, {6, 7, -1} },
+ },
+ [P4_EVENT_RESOURCE_STALL] = {
+ .opcode = P4_OPCODE(P4_EVENT_RESOURCE_STALL),
+ .escr_msr = { MSR_P4_ALF_ESCR0, MSR_P4_ALF_ESCR1 },
+ .escr_emask =
+ P4_ESCR_EMASK_BIT(P4_EVENT_RESOURCE_STALL, SBFULL),
+ .cntr = { {12, 13, 16}, {14, 15, 17} },
+ },
+ [P4_EVENT_WC_BUFFER] = {
+ .opcode = P4_OPCODE(P4_EVENT_WC_BUFFER),
+ .escr_msr = { MSR_P4_DAC_ESCR0, MSR_P4_DAC_ESCR1 },
+ .escr_emask =
+ P4_ESCR_EMASK_BIT(P4_EVENT_WC_BUFFER, WCB_EVICTS) |
+ P4_ESCR_EMASK_BIT(P4_EVENT_WC_BUFFER, WCB_FULL_EVICTS),
+ .shared = 1,
+ .cntr = { {8, 9, -1}, {10, 11, -1} },
+ },
+ [P4_EVENT_B2B_CYCLES] = {
+ .opcode = P4_OPCODE(P4_EVENT_B2B_CYCLES),
+ .escr_msr = { MSR_P4_FSB_ESCR0, MSR_P4_FSB_ESCR1 },
+ .escr_emask = 0,
+ .cntr = { {0, -1, -1}, {2, -1, -1} },
+ },
+ [P4_EVENT_BNR] = {
+ .opcode = P4_OPCODE(P4_EVENT_BNR),
+ .escr_msr = { MSR_P4_FSB_ESCR0, MSR_P4_FSB_ESCR1 },
+ .escr_emask = 0,
+ .cntr = { {0, -1, -1}, {2, -1, -1} },
+ },
+ [P4_EVENT_SNOOP] = {
+ .opcode = P4_OPCODE(P4_EVENT_SNOOP),
+ .escr_msr = { MSR_P4_FSB_ESCR0, MSR_P4_FSB_ESCR1 },
+ .escr_emask = 0,
+ .cntr = { {0, -1, -1}, {2, -1, -1} },
+ },
+ [P4_EVENT_RESPONSE] = {
+ .opcode = P4_OPCODE(P4_EVENT_RESPONSE),
+ .escr_msr = { MSR_P4_FSB_ESCR0, MSR_P4_FSB_ESCR1 },
+ .escr_emask = 0,
+ .cntr = { {0, -1, -1}, {2, -1, -1} },
+ },
+ [P4_EVENT_FRONT_END_EVENT] = {
+ .opcode = P4_OPCODE(P4_EVENT_FRONT_END_EVENT),
+ .escr_msr = { MSR_P4_CRU_ESCR2, MSR_P4_CRU_ESCR3 },
+ .escr_emask =
+ P4_ESCR_EMASK_BIT(P4_EVENT_FRONT_END_EVENT, NBOGUS) |
+ P4_ESCR_EMASK_BIT(P4_EVENT_FRONT_END_EVENT, BOGUS),
+ .cntr = { {12, 13, 16}, {14, 15, 17} },
+ },
+ [P4_EVENT_EXECUTION_EVENT] = {
+ .opcode = P4_OPCODE(P4_EVENT_EXECUTION_EVENT),
+ .escr_msr = { MSR_P4_CRU_ESCR2, MSR_P4_CRU_ESCR3 },
+ .escr_emask =
+ P4_ESCR_EMASK_BIT(P4_EVENT_EXECUTION_EVENT, NBOGUS0) |
+ P4_ESCR_EMASK_BIT(P4_EVENT_EXECUTION_EVENT, NBOGUS1) |
+ P4_ESCR_EMASK_BIT(P4_EVENT_EXECUTION_EVENT, NBOGUS2) |
+ P4_ESCR_EMASK_BIT(P4_EVENT_EXECUTION_EVENT, NBOGUS3) |
+ P4_ESCR_EMASK_BIT(P4_EVENT_EXECUTION_EVENT, BOGUS0) |
+ P4_ESCR_EMASK_BIT(P4_EVENT_EXECUTION_EVENT, BOGUS1) |
+ P4_ESCR_EMASK_BIT(P4_EVENT_EXECUTION_EVENT, BOGUS2) |
+ P4_ESCR_EMASK_BIT(P4_EVENT_EXECUTION_EVENT, BOGUS3),
+ .cntr = { {12, 13, 16}, {14, 15, 17} },
+ },
+ [P4_EVENT_REPLAY_EVENT] = {
+ .opcode = P4_OPCODE(P4_EVENT_REPLAY_EVENT),
+ .escr_msr = { MSR_P4_CRU_ESCR2, MSR_P4_CRU_ESCR3 },
+ .escr_emask =
+ P4_ESCR_EMASK_BIT(P4_EVENT_REPLAY_EVENT, NBOGUS) |
+ P4_ESCR_EMASK_BIT(P4_EVENT_REPLAY_EVENT, BOGUS),
+ .cntr = { {12, 13, 16}, {14, 15, 17} },
+ },
+ [P4_EVENT_INSTR_RETIRED] = {
+ .opcode = P4_OPCODE(P4_EVENT_INSTR_RETIRED),
+ .escr_msr = { MSR_P4_CRU_ESCR0, MSR_P4_CRU_ESCR1 },
+ .escr_emask =
+ P4_ESCR_EMASK_BIT(P4_EVENT_INSTR_RETIRED, NBOGUSNTAG) |
+ P4_ESCR_EMASK_BIT(P4_EVENT_INSTR_RETIRED, NBOGUSTAG) |
+ P4_ESCR_EMASK_BIT(P4_EVENT_INSTR_RETIRED, BOGUSNTAG) |
+ P4_ESCR_EMASK_BIT(P4_EVENT_INSTR_RETIRED, BOGUSTAG),
+ .cntr = { {12, 13, 16}, {14, 15, 17} },
+ },
+ [P4_EVENT_UOPS_RETIRED] = {
+ .opcode = P4_OPCODE(P4_EVENT_UOPS_RETIRED),
+ .escr_msr = { MSR_P4_CRU_ESCR0, MSR_P4_CRU_ESCR1 },
+ .escr_emask =
+ P4_ESCR_EMASK_BIT(P4_EVENT_UOPS_RETIRED, NBOGUS) |
+ P4_ESCR_EMASK_BIT(P4_EVENT_UOPS_RETIRED, BOGUS),
+ .cntr = { {12, 13, 16}, {14, 15, 17} },
+ },
+ [P4_EVENT_UOP_TYPE] = {
+ .opcode = P4_OPCODE(P4_EVENT_UOP_TYPE),
+ .escr_msr = { MSR_P4_RAT_ESCR0, MSR_P4_RAT_ESCR1 },
+ .escr_emask =
+ P4_ESCR_EMASK_BIT(P4_EVENT_UOP_TYPE, TAGLOADS) |
+ P4_ESCR_EMASK_BIT(P4_EVENT_UOP_TYPE, TAGSTORES),
+ .cntr = { {12, 13, 16}, {14, 15, 17} },
+ },
+ [P4_EVENT_BRANCH_RETIRED] = {
+ .opcode = P4_OPCODE(P4_EVENT_BRANCH_RETIRED),
+ .escr_msr = { MSR_P4_CRU_ESCR2, MSR_P4_CRU_ESCR3 },
+ .escr_emask =
+ P4_ESCR_EMASK_BIT(P4_EVENT_BRANCH_RETIRED, MMNP) |
+ P4_ESCR_EMASK_BIT(P4_EVENT_BRANCH_RETIRED, MMNM) |
+ P4_ESCR_EMASK_BIT(P4_EVENT_BRANCH_RETIRED, MMTP) |
+ P4_ESCR_EMASK_BIT(P4_EVENT_BRANCH_RETIRED, MMTM),
+ .cntr = { {12, 13, 16}, {14, 15, 17} },
+ },
+ [P4_EVENT_MISPRED_BRANCH_RETIRED] = {
+ .opcode = P4_OPCODE(P4_EVENT_MISPRED_BRANCH_RETIRED),
+ .escr_msr = { MSR_P4_CRU_ESCR0, MSR_P4_CRU_ESCR1 },
+ .escr_emask =
+ P4_ESCR_EMASK_BIT(P4_EVENT_MISPRED_BRANCH_RETIRED, NBOGUS),
+ .cntr = { {12, 13, 16}, {14, 15, 17} },
+ },
+ [P4_EVENT_X87_ASSIST] = {
+ .opcode = P4_OPCODE(P4_EVENT_X87_ASSIST),
+ .escr_msr = { MSR_P4_CRU_ESCR2, MSR_P4_CRU_ESCR3 },
+ .escr_emask =
+ P4_ESCR_EMASK_BIT(P4_EVENT_X87_ASSIST, FPSU) |
+ P4_ESCR_EMASK_BIT(P4_EVENT_X87_ASSIST, FPSO) |
+ P4_ESCR_EMASK_BIT(P4_EVENT_X87_ASSIST, POAO) |
+ P4_ESCR_EMASK_BIT(P4_EVENT_X87_ASSIST, POAU) |
+ P4_ESCR_EMASK_BIT(P4_EVENT_X87_ASSIST, PREA),
+ .cntr = { {12, 13, 16}, {14, 15, 17} },
+ },
+ [P4_EVENT_MACHINE_CLEAR] = {
+ .opcode = P4_OPCODE(P4_EVENT_MACHINE_CLEAR),
+ .escr_msr = { MSR_P4_CRU_ESCR2, MSR_P4_CRU_ESCR3 },
+ .escr_emask =
+ P4_ESCR_EMASK_BIT(P4_EVENT_MACHINE_CLEAR, CLEAR) |
+ P4_ESCR_EMASK_BIT(P4_EVENT_MACHINE_CLEAR, MOCLEAR) |
+ P4_ESCR_EMASK_BIT(P4_EVENT_MACHINE_CLEAR, SMCLEAR),
+ .cntr = { {12, 13, 16}, {14, 15, 17} },
+ },
+ [P4_EVENT_INSTR_COMPLETED] = {
+ .opcode = P4_OPCODE(P4_EVENT_INSTR_COMPLETED),
+ .escr_msr = { MSR_P4_CRU_ESCR0, MSR_P4_CRU_ESCR1 },
+ .escr_emask =
+ P4_ESCR_EMASK_BIT(P4_EVENT_INSTR_COMPLETED, NBOGUS) |
+ P4_ESCR_EMASK_BIT(P4_EVENT_INSTR_COMPLETED, BOGUS),
+ .cntr = { {12, 13, 16}, {14, 15, 17} },
+ },
+};
+
+#define P4_GEN_CACHE_EVENT(event, bit, metric) \
+ p4_config_pack_escr(P4_ESCR_EVENT(event) | \
+ P4_ESCR_EMASK_BIT(event, bit)) | \
+ p4_config_pack_cccr(metric | \
+ P4_CCCR_ESEL(P4_OPCODE_ESEL(P4_OPCODE(event))))
+
+static __initconst const u64 p4_hw_cache_event_ids
+ [PERF_COUNT_HW_CACHE_MAX]
+ [PERF_COUNT_HW_CACHE_OP_MAX]
+ [PERF_COUNT_HW_CACHE_RESULT_MAX] =
+{
+ [ C(L1D ) ] = {
+ [ C(OP_READ) ] = {
+ [ C(RESULT_ACCESS) ] = 0x0,
+ [ C(RESULT_MISS) ] = P4_GEN_CACHE_EVENT(P4_EVENT_REPLAY_EVENT, NBOGUS,
+ P4_PEBS_METRIC__1stl_cache_load_miss_retired),
+ },
+ },
+ [ C(LL ) ] = {
+ [ C(OP_READ) ] = {
+ [ C(RESULT_ACCESS) ] = 0x0,
+ [ C(RESULT_MISS) ] = P4_GEN_CACHE_EVENT(P4_EVENT_REPLAY_EVENT, NBOGUS,
+ P4_PEBS_METRIC__2ndl_cache_load_miss_retired),
+ },
+},
+ [ C(DTLB) ] = {
+ [ C(OP_READ) ] = {
+ [ C(RESULT_ACCESS) ] = 0x0,
+ [ C(RESULT_MISS) ] = P4_GEN_CACHE_EVENT(P4_EVENT_REPLAY_EVENT, NBOGUS,
+ P4_PEBS_METRIC__dtlb_load_miss_retired),
+ },
+ [ C(OP_WRITE) ] = {
+ [ C(RESULT_ACCESS) ] = 0x0,
+ [ C(RESULT_MISS) ] = P4_GEN_CACHE_EVENT(P4_EVENT_REPLAY_EVENT, NBOGUS,
+ P4_PEBS_METRIC__dtlb_store_miss_retired),
+ },
+ },
+ [ C(ITLB) ] = {
+ [ C(OP_READ) ] = {
+ [ C(RESULT_ACCESS) ] = P4_GEN_CACHE_EVENT(P4_EVENT_ITLB_REFERENCE, HIT,
+ P4_PEBS_METRIC__none),
+ [ C(RESULT_MISS) ] = P4_GEN_CACHE_EVENT(P4_EVENT_ITLB_REFERENCE, MISS,
+ P4_PEBS_METRIC__none),
+ },
+ [ C(OP_WRITE) ] = {
+ [ C(RESULT_ACCESS) ] = -1,
+ [ C(RESULT_MISS) ] = -1,
+ },
+ [ C(OP_PREFETCH) ] = {
+ [ C(RESULT_ACCESS) ] = -1,
+ [ C(RESULT_MISS) ] = -1,
+ },
+ },
+ [ C(NODE) ] = {
+ [ C(OP_READ) ] = {
+ [ C(RESULT_ACCESS) ] = -1,
+ [ C(RESULT_MISS) ] = -1,
+ },
+ [ C(OP_WRITE) ] = {
+ [ C(RESULT_ACCESS) ] = -1,
+ [ C(RESULT_MISS) ] = -1,
+ },
+ [ C(OP_PREFETCH) ] = {
+ [ C(RESULT_ACCESS) ] = -1,
+ [ C(RESULT_MISS) ] = -1,
+ },
+ },
+};
+
+/*
+ * Because of Netburst being quite restricted in how many
+ * identical events may run simultaneously, we introduce event aliases,
+ * ie the different events which have the same functionality but
+ * utilize non-intersected resources (ESCR/CCCR/counter registers).
+ *
+ * This allow us to relax restrictions a bit and run two or more
+ * identical events together.
+ *
+ * Never set any custom internal bits such as P4_CONFIG_HT,
+ * P4_CONFIG_ALIASABLE or bits for P4_PEBS_METRIC, they are
+ * either up to date automatically or not applicable at all.
+ */
+struct p4_event_alias {
+ u64 original;
+ u64 alternative;
+} p4_event_aliases[] = {
+ {
+ /*
+ * Non-halted cycles can be substituted with non-sleeping cycles (see
+ * Intel SDM Vol3b for details). We need this alias to be able
+ * to run nmi-watchdog and 'perf top' (or any other user space tool
+ * which is interested in running PERF_COUNT_HW_CPU_CYCLES)
+ * simultaneously.
+ */
+ .original =
+ p4_config_pack_escr(P4_ESCR_EVENT(P4_EVENT_GLOBAL_POWER_EVENTS) |
+ P4_ESCR_EMASK_BIT(P4_EVENT_GLOBAL_POWER_EVENTS, RUNNING)),
+ .alternative =
+ p4_config_pack_escr(P4_ESCR_EVENT(P4_EVENT_EXECUTION_EVENT) |
+ P4_ESCR_EMASK_BIT(P4_EVENT_EXECUTION_EVENT, NBOGUS0)|
+ P4_ESCR_EMASK_BIT(P4_EVENT_EXECUTION_EVENT, NBOGUS1)|
+ P4_ESCR_EMASK_BIT(P4_EVENT_EXECUTION_EVENT, NBOGUS2)|
+ P4_ESCR_EMASK_BIT(P4_EVENT_EXECUTION_EVENT, NBOGUS3)|
+ P4_ESCR_EMASK_BIT(P4_EVENT_EXECUTION_EVENT, BOGUS0) |
+ P4_ESCR_EMASK_BIT(P4_EVENT_EXECUTION_EVENT, BOGUS1) |
+ P4_ESCR_EMASK_BIT(P4_EVENT_EXECUTION_EVENT, BOGUS2) |
+ P4_ESCR_EMASK_BIT(P4_EVENT_EXECUTION_EVENT, BOGUS3))|
+ p4_config_pack_cccr(P4_CCCR_THRESHOLD(15) | P4_CCCR_COMPLEMENT |
+ P4_CCCR_COMPARE),
+ },
+};
+
+static u64 p4_get_alias_event(u64 config)
+{
+ u64 config_match;
+ int i;
+
+ /*
+ * Only event with special mark is allowed,
+ * we're to be sure it didn't come as malformed
+ * RAW event.
+ */
+ if (!(config & P4_CONFIG_ALIASABLE))
+ return 0;
+
+ config_match = config & P4_CONFIG_EVENT_ALIAS_MASK;
+
+ for (i = 0; i < ARRAY_SIZE(p4_event_aliases); i++) {
+ if (config_match == p4_event_aliases[i].original) {
+ config_match = p4_event_aliases[i].alternative;
+ break;
+ } else if (config_match == p4_event_aliases[i].alternative) {
+ config_match = p4_event_aliases[i].original;
+ break;
+ }
+ }
+
+ if (i >= ARRAY_SIZE(p4_event_aliases))
+ return 0;
+
+ return config_match | (config & P4_CONFIG_EVENT_ALIAS_IMMUTABLE_BITS);
+}
+
+static u64 p4_general_events[PERF_COUNT_HW_MAX] = {
+ /* non-halted CPU clocks */
+ [PERF_COUNT_HW_CPU_CYCLES] =
+ p4_config_pack_escr(P4_ESCR_EVENT(P4_EVENT_GLOBAL_POWER_EVENTS) |
+ P4_ESCR_EMASK_BIT(P4_EVENT_GLOBAL_POWER_EVENTS, RUNNING)) |
+ P4_CONFIG_ALIASABLE,
+
+ /*
+ * retired instructions
+ * in a sake of simplicity we don't use the FSB tagging
+ */
+ [PERF_COUNT_HW_INSTRUCTIONS] =
+ p4_config_pack_escr(P4_ESCR_EVENT(P4_EVENT_INSTR_RETIRED) |
+ P4_ESCR_EMASK_BIT(P4_EVENT_INSTR_RETIRED, NBOGUSNTAG) |
+ P4_ESCR_EMASK_BIT(P4_EVENT_INSTR_RETIRED, BOGUSNTAG)),
+
+ /* cache hits */
+ [PERF_COUNT_HW_CACHE_REFERENCES] =
+ p4_config_pack_escr(P4_ESCR_EVENT(P4_EVENT_BSQ_CACHE_REFERENCE) |
+ P4_ESCR_EMASK_BIT(P4_EVENT_BSQ_CACHE_REFERENCE, RD_2ndL_HITS) |
+ P4_ESCR_EMASK_BIT(P4_EVENT_BSQ_CACHE_REFERENCE, RD_2ndL_HITE) |
+ P4_ESCR_EMASK_BIT(P4_EVENT_BSQ_CACHE_REFERENCE, RD_2ndL_HITM) |
+ P4_ESCR_EMASK_BIT(P4_EVENT_BSQ_CACHE_REFERENCE, RD_3rdL_HITS) |
+ P4_ESCR_EMASK_BIT(P4_EVENT_BSQ_CACHE_REFERENCE, RD_3rdL_HITE) |
+ P4_ESCR_EMASK_BIT(P4_EVENT_BSQ_CACHE_REFERENCE, RD_3rdL_HITM)),
+
+ /* cache misses */
+ [PERF_COUNT_HW_CACHE_MISSES] =
+ p4_config_pack_escr(P4_ESCR_EVENT(P4_EVENT_BSQ_CACHE_REFERENCE) |
+ P4_ESCR_EMASK_BIT(P4_EVENT_BSQ_CACHE_REFERENCE, RD_2ndL_MISS) |
+ P4_ESCR_EMASK_BIT(P4_EVENT_BSQ_CACHE_REFERENCE, RD_3rdL_MISS) |
+ P4_ESCR_EMASK_BIT(P4_EVENT_BSQ_CACHE_REFERENCE, WR_2ndL_MISS)),
+
+ /* branch instructions retired */
+ [PERF_COUNT_HW_BRANCH_INSTRUCTIONS] =
+ p4_config_pack_escr(P4_ESCR_EVENT(P4_EVENT_RETIRED_BRANCH_TYPE) |
+ P4_ESCR_EMASK_BIT(P4_EVENT_RETIRED_BRANCH_TYPE, CONDITIONAL) |
+ P4_ESCR_EMASK_BIT(P4_EVENT_RETIRED_BRANCH_TYPE, CALL) |
+ P4_ESCR_EMASK_BIT(P4_EVENT_RETIRED_BRANCH_TYPE, RETURN) |
+ P4_ESCR_EMASK_BIT(P4_EVENT_RETIRED_BRANCH_TYPE, INDIRECT)),
+
+ /* mispredicted branches retired */
+ [PERF_COUNT_HW_BRANCH_MISSES] =
+ p4_config_pack_escr(P4_ESCR_EVENT(P4_EVENT_MISPRED_BRANCH_RETIRED) |
+ P4_ESCR_EMASK_BIT(P4_EVENT_MISPRED_BRANCH_RETIRED, NBOGUS)),
+
+ /* bus ready clocks (cpu is driving #DRDY_DRV\#DRDY_OWN): */
+ [PERF_COUNT_HW_BUS_CYCLES] =
+ p4_config_pack_escr(P4_ESCR_EVENT(P4_EVENT_FSB_DATA_ACTIVITY) |
+ P4_ESCR_EMASK_BIT(P4_EVENT_FSB_DATA_ACTIVITY, DRDY_DRV) |
+ P4_ESCR_EMASK_BIT(P4_EVENT_FSB_DATA_ACTIVITY, DRDY_OWN)) |
+ p4_config_pack_cccr(P4_CCCR_EDGE | P4_CCCR_COMPARE),
+};
+
+static struct p4_event_bind *p4_config_get_bind(u64 config)
+{
+ unsigned int evnt = p4_config_unpack_event(config);
+ struct p4_event_bind *bind = NULL;
+
+ if (evnt < ARRAY_SIZE(p4_event_bind_map))
+ bind = &p4_event_bind_map[evnt];
+
+ return bind;
+}
+
+static u64 p4_pmu_event_map(int hw_event)
+{
+ struct p4_event_bind *bind;
+ unsigned int esel;
+ u64 config;
+
+ config = p4_general_events[hw_event];
+ bind = p4_config_get_bind(config);
+ esel = P4_OPCODE_ESEL(bind->opcode);
+ config |= p4_config_pack_cccr(P4_CCCR_ESEL(esel));
+
+ return config;
+}
+
+/* check cpu model specifics */
+static bool p4_event_match_cpu_model(unsigned int event_idx)
+{
+ /* INSTR_COMPLETED event only exist for model 3, 4, 6 (Prescott) */
+ if (event_idx == P4_EVENT_INSTR_COMPLETED) {
+ if (boot_cpu_data.x86_model != 3 &&
+ boot_cpu_data.x86_model != 4 &&
+ boot_cpu_data.x86_model != 6)
+ return false;
+ }
+
+ /*
+ * For info
+ * - IQ_ESCR0, IQ_ESCR1 only for models 1 and 2
+ */
+
+ return true;
+}
+
+static int p4_validate_raw_event(struct perf_event *event)
+{
+ unsigned int v, emask;
+
+ /* User data may have out-of-bound event index */
+ v = p4_config_unpack_event(event->attr.config);
+ if (v >= ARRAY_SIZE(p4_event_bind_map))
+ return -EINVAL;
+
+ /* It may be unsupported: */
+ if (!p4_event_match_cpu_model(v))
+ return -EINVAL;
+
+ /*
+ * NOTE: P4_CCCR_THREAD_ANY has not the same meaning as
+ * in Architectural Performance Monitoring, it means not
+ * on _which_ logical cpu to count but rather _when_, ie it
+ * depends on logical cpu state -- count event if one cpu active,
+ * none, both or any, so we just allow user to pass any value
+ * desired.
+ *
+ * In turn we always set Tx_OS/Tx_USR bits bound to logical
+ * cpu without their propagation to another cpu
+ */
+
+ /*
+ * if an event is shared across the logical threads
+ * the user needs special permissions to be able to use it
+ */
+ if (p4_ht_active() && p4_event_bind_map[v].shared) {
+ if (perf_paranoid_cpu() && !capable(CAP_SYS_ADMIN))
+ return -EACCES;
+ }
+
+ /* ESCR EventMask bits may be invalid */
+ emask = p4_config_unpack_escr(event->attr.config) & P4_ESCR_EVENTMASK_MASK;
+ if (emask & ~p4_event_bind_map[v].escr_emask)
+ return -EINVAL;
+
+ /*
+ * it may have some invalid PEBS bits
+ */
+ if (p4_config_pebs_has(event->attr.config, P4_PEBS_CONFIG_ENABLE))
+ return -EINVAL;
+
+ v = p4_config_unpack_metric(event->attr.config);
+ if (v >= ARRAY_SIZE(p4_pebs_bind_map))
+ return -EINVAL;
+
+ return 0;
+}
+
+static int p4_hw_config(struct perf_event *event)
+{
+ int cpu = get_cpu();
+ int rc = 0;
+ u32 escr, cccr;
+
+ /*
+ * the reason we use cpu that early is that: if we get scheduled
+ * first time on the same cpu -- we will not need swap thread
+ * specific flags in config (and will save some cpu cycles)
+ */
+
+ cccr = p4_default_cccr_conf(cpu);
+ escr = p4_default_escr_conf(cpu, event->attr.exclude_kernel,
+ event->attr.exclude_user);
+ event->hw.config = p4_config_pack_escr(escr) |
+ p4_config_pack_cccr(cccr);
+
+ if (p4_ht_active() && p4_ht_thread(cpu))
+ event->hw.config = p4_set_ht_bit(event->hw.config);
+
+ if (event->attr.type == PERF_TYPE_RAW) {
+ struct p4_event_bind *bind;
+ unsigned int esel;
+ /*
+ * Clear bits we reserve to be managed by kernel itself
+ * and never allowed from a user space
+ */
+ event->attr.config &= P4_CONFIG_MASK;
+
+ rc = p4_validate_raw_event(event);
+ if (rc)
+ goto out;
+
+ /*
+ * Note that for RAW events we allow user to use P4_CCCR_RESERVED
+ * bits since we keep additional info here (for cache events and etc)
+ */
+ event->hw.config |= event->attr.config;
+ bind = p4_config_get_bind(event->attr.config);
+ if (!bind) {
+ rc = -EINVAL;
+ goto out;
+ }
+ esel = P4_OPCODE_ESEL(bind->opcode);
+ event->hw.config |= p4_config_pack_cccr(P4_CCCR_ESEL(esel));
+ }
+
+ rc = x86_setup_perfctr(event);
+out:
+ put_cpu();
+ return rc;
+}
+
+static inline int p4_pmu_clear_cccr_ovf(struct hw_perf_event *hwc)
+{
+ u64 v;
+
+ /* an official way for overflow indication */
+ rdmsrl(hwc->config_base, v);
+ if (v & P4_CCCR_OVF) {
+ wrmsrl(hwc->config_base, v & ~P4_CCCR_OVF);
+ return 1;
+ }
+
+ /*
+ * In some circumstances the overflow might issue an NMI but did
+ * not set P4_CCCR_OVF bit. Because a counter holds a negative value
+ * we simply check for high bit being set, if it's cleared it means
+ * the counter has reached zero value and continued counting before
+ * real NMI signal was received:
+ */
+ rdmsrl(hwc->event_base, v);
+ if (!(v & ARCH_P4_UNFLAGGED_BIT))
+ return 1;
+
+ return 0;
+}
+
+static void p4_pmu_disable_pebs(void)
+{
+ /*
+ * FIXME
+ *
+ * It's still allowed that two threads setup same cache
+ * events so we can't simply clear metrics until we knew
+ * no one is depending on us, so we need kind of counter
+ * for "ReplayEvent" users.
+ *
+ * What is more complex -- RAW events, if user (for some
+ * reason) will pass some cache event metric with improper
+ * event opcode -- it's fine from hardware point of view
+ * but completely nonsense from "meaning" of such action.
+ *
+ * So at moment let leave metrics turned on forever -- it's
+ * ok for now but need to be revisited!
+ *
+ * (void)wrmsrl_safe(MSR_IA32_PEBS_ENABLE, 0);
+ * (void)wrmsrl_safe(MSR_P4_PEBS_MATRIX_VERT, 0);
+ */
+}
+
+static inline void p4_pmu_disable_event(struct perf_event *event)
+{
+ struct hw_perf_event *hwc = &event->hw;
+
+ /*
+ * If event gets disabled while counter is in overflowed
+ * state we need to clear P4_CCCR_OVF, otherwise interrupt get
+ * asserted again and again
+ */
+ (void)wrmsrl_safe(hwc->config_base,
+ p4_config_unpack_cccr(hwc->config) & ~P4_CCCR_ENABLE & ~P4_CCCR_OVF & ~P4_CCCR_RESERVED);
+}
+
+static void p4_pmu_disable_all(void)
+{
+ struct cpu_hw_events *cpuc = this_cpu_ptr(&cpu_hw_events);
+ int idx;
+
+ for (idx = 0; idx < x86_pmu.num_counters; idx++) {
+ struct perf_event *event = cpuc->events[idx];
+ if (!test_bit(idx, cpuc->active_mask))
+ continue;
+ p4_pmu_disable_event(event);
+ }
+
+ p4_pmu_disable_pebs();
+}
+
+/* configuration must be valid */
+static void p4_pmu_enable_pebs(u64 config)
+{
+ struct p4_pebs_bind *bind;
+ unsigned int idx;
+
+ BUILD_BUG_ON(P4_PEBS_METRIC__max > P4_PEBS_CONFIG_METRIC_MASK);
+
+ idx = p4_config_unpack_metric(config);
+ if (idx == P4_PEBS_METRIC__none)
+ return;
+
+ bind = &p4_pebs_bind_map[idx];
+
+ (void)wrmsrl_safe(MSR_IA32_PEBS_ENABLE, (u64)bind->metric_pebs);
+ (void)wrmsrl_safe(MSR_P4_PEBS_MATRIX_VERT, (u64)bind->metric_vert);
+}
+
+static void p4_pmu_enable_event(struct perf_event *event)
+{
+ struct hw_perf_event *hwc = &event->hw;
+ int thread = p4_ht_config_thread(hwc->config);
+ u64 escr_conf = p4_config_unpack_escr(p4_clear_ht_bit(hwc->config));
+ unsigned int idx = p4_config_unpack_event(hwc->config);
+ struct p4_event_bind *bind;
+ u64 escr_addr, cccr;
+
+ bind = &p4_event_bind_map[idx];
+ escr_addr = bind->escr_msr[thread];
+
+ /*
+ * - we dont support cascaded counters yet
+ * - and counter 1 is broken (erratum)
+ */
+ WARN_ON_ONCE(p4_is_event_cascaded(hwc->config));
+ WARN_ON_ONCE(hwc->idx == 1);
+
+ /* we need a real Event value */
+ escr_conf &= ~P4_ESCR_EVENT_MASK;
+ escr_conf |= P4_ESCR_EVENT(P4_OPCODE_EVNT(bind->opcode));
+
+ cccr = p4_config_unpack_cccr(hwc->config);
+
+ /*
+ * it could be Cache event so we need to write metrics
+ * into additional MSRs
+ */
+ p4_pmu_enable_pebs(hwc->config);
+
+ (void)wrmsrl_safe(escr_addr, escr_conf);
+ (void)wrmsrl_safe(hwc->config_base,
+ (cccr & ~P4_CCCR_RESERVED) | P4_CCCR_ENABLE);
+}
+
+static void p4_pmu_enable_all(int added)
+{
+ struct cpu_hw_events *cpuc = this_cpu_ptr(&cpu_hw_events);
+ int idx;
+
+ for (idx = 0; idx < x86_pmu.num_counters; idx++) {
+ struct perf_event *event = cpuc->events[idx];
+ if (!test_bit(idx, cpuc->active_mask))
+ continue;
+ p4_pmu_enable_event(event);
+ }
+}
+
+static int p4_pmu_handle_irq(struct pt_regs *regs)
+{
+ struct perf_sample_data data;
+ struct cpu_hw_events *cpuc;
+ struct perf_event *event;
+ struct hw_perf_event *hwc;
+ int idx, handled = 0;
+ u64 val;
+
+ cpuc = this_cpu_ptr(&cpu_hw_events);
+
+ for (idx = 0; idx < x86_pmu.num_counters; idx++) {
+ int overflow;
+
+ if (!test_bit(idx, cpuc->active_mask)) {
+ /* catch in-flight IRQs */
+ if (__test_and_clear_bit(idx, cpuc->running))
+ handled++;
+ continue;
+ }
+
+ event = cpuc->events[idx];
+ hwc = &event->hw;
+
+ WARN_ON_ONCE(hwc->idx != idx);
+
+ /* it might be unflagged overflow */
+ overflow = p4_pmu_clear_cccr_ovf(hwc);
+
+ val = x86_perf_event_update(event);
+ if (!overflow && (val & (1ULL << (x86_pmu.cntval_bits - 1))))
+ continue;
+
+ handled += overflow;
+
+ /* event overflow for sure */
+ perf_sample_data_init(&data, 0, hwc->last_period);
+
+ if (!x86_perf_event_set_period(event))
+ continue;
+
+
+ if (perf_event_overflow(event, &data, regs))
+ x86_pmu_stop(event, 0);
+ }
+
+ if (handled)
+ inc_irq_stat(apic_perf_irqs);
+
+ /*
+ * When dealing with the unmasking of the LVTPC on P4 perf hw, it has
+ * been observed that the OVF bit flag has to be cleared first _before_
+ * the LVTPC can be unmasked.
+ *
+ * The reason is the NMI line will continue to be asserted while the OVF
+ * bit is set. This causes a second NMI to generate if the LVTPC is
+ * unmasked before the OVF bit is cleared, leading to unknown NMI
+ * messages.
+ */
+ apic_write(APIC_LVTPC, APIC_DM_NMI);
+
+ return handled;
+}
+
+/*
+ * swap thread specific fields according to a thread
+ * we are going to run on
+ */
+static void p4_pmu_swap_config_ts(struct hw_perf_event *hwc, int cpu)
+{
+ u32 escr, cccr;
+
+ /*
+ * we either lucky and continue on same cpu or no HT support
+ */
+ if (!p4_should_swap_ts(hwc->config, cpu))
+ return;
+
+ /*
+ * the event is migrated from an another logical
+ * cpu, so we need to swap thread specific flags
+ */
+
+ escr = p4_config_unpack_escr(hwc->config);
+ cccr = p4_config_unpack_cccr(hwc->config);
+
+ if (p4_ht_thread(cpu)) {
+ cccr &= ~P4_CCCR_OVF_PMI_T0;
+ cccr |= P4_CCCR_OVF_PMI_T1;
+ if (escr & P4_ESCR_T0_OS) {
+ escr &= ~P4_ESCR_T0_OS;
+ escr |= P4_ESCR_T1_OS;
+ }
+ if (escr & P4_ESCR_T0_USR) {
+ escr &= ~P4_ESCR_T0_USR;
+ escr |= P4_ESCR_T1_USR;
+ }
+ hwc->config = p4_config_pack_escr(escr);
+ hwc->config |= p4_config_pack_cccr(cccr);
+ hwc->config |= P4_CONFIG_HT;
+ } else {
+ cccr &= ~P4_CCCR_OVF_PMI_T1;
+ cccr |= P4_CCCR_OVF_PMI_T0;
+ if (escr & P4_ESCR_T1_OS) {
+ escr &= ~P4_ESCR_T1_OS;
+ escr |= P4_ESCR_T0_OS;
+ }
+ if (escr & P4_ESCR_T1_USR) {
+ escr &= ~P4_ESCR_T1_USR;
+ escr |= P4_ESCR_T0_USR;
+ }
+ hwc->config = p4_config_pack_escr(escr);
+ hwc->config |= p4_config_pack_cccr(cccr);
+ hwc->config &= ~P4_CONFIG_HT;
+ }
+}
+
+/*
+ * ESCR address hashing is tricky, ESCRs are not sequential
+ * in memory but all starts from MSR_P4_BSU_ESCR0 (0x03a0) and
+ * the metric between any ESCRs is laid in range [0xa0,0xe1]
+ *
+ * so we make ~70% filled hashtable
+ */
+
+#define P4_ESCR_MSR_BASE 0x000003a0
+#define P4_ESCR_MSR_MAX 0x000003e1
+#define P4_ESCR_MSR_TABLE_SIZE (P4_ESCR_MSR_MAX - P4_ESCR_MSR_BASE + 1)
+#define P4_ESCR_MSR_IDX(msr) (msr - P4_ESCR_MSR_BASE)
+#define P4_ESCR_MSR_TABLE_ENTRY(msr) [P4_ESCR_MSR_IDX(msr)] = msr
+
+static const unsigned int p4_escr_table[P4_ESCR_MSR_TABLE_SIZE] = {
+ P4_ESCR_MSR_TABLE_ENTRY(MSR_P4_ALF_ESCR0),
+ P4_ESCR_MSR_TABLE_ENTRY(MSR_P4_ALF_ESCR1),
+ P4_ESCR_MSR_TABLE_ENTRY(MSR_P4_BPU_ESCR0),
+ P4_ESCR_MSR_TABLE_ENTRY(MSR_P4_BPU_ESCR1),
+ P4_ESCR_MSR_TABLE_ENTRY(MSR_P4_BSU_ESCR0),
+ P4_ESCR_MSR_TABLE_ENTRY(MSR_P4_BSU_ESCR1),
+ P4_ESCR_MSR_TABLE_ENTRY(MSR_P4_CRU_ESCR0),
+ P4_ESCR_MSR_TABLE_ENTRY(MSR_P4_CRU_ESCR1),
+ P4_ESCR_MSR_TABLE_ENTRY(MSR_P4_CRU_ESCR2),
+ P4_ESCR_MSR_TABLE_ENTRY(MSR_P4_CRU_ESCR3),
+ P4_ESCR_MSR_TABLE_ENTRY(MSR_P4_CRU_ESCR4),
+ P4_ESCR_MSR_TABLE_ENTRY(MSR_P4_CRU_ESCR5),
+ P4_ESCR_MSR_TABLE_ENTRY(MSR_P4_DAC_ESCR0),
+ P4_ESCR_MSR_TABLE_ENTRY(MSR_P4_DAC_ESCR1),
+ P4_ESCR_MSR_TABLE_ENTRY(MSR_P4_FIRM_ESCR0),
+ P4_ESCR_MSR_TABLE_ENTRY(MSR_P4_FIRM_ESCR1),
+ P4_ESCR_MSR_TABLE_ENTRY(MSR_P4_FLAME_ESCR0),
+ P4_ESCR_MSR_TABLE_ENTRY(MSR_P4_FLAME_ESCR1),
+ P4_ESCR_MSR_TABLE_ENTRY(MSR_P4_FSB_ESCR0),
+ P4_ESCR_MSR_TABLE_ENTRY(MSR_P4_FSB_ESCR1),
+ P4_ESCR_MSR_TABLE_ENTRY(MSR_P4_IQ_ESCR0),
+ P4_ESCR_MSR_TABLE_ENTRY(MSR_P4_IQ_ESCR1),
+ P4_ESCR_MSR_TABLE_ENTRY(MSR_P4_IS_ESCR0),
+ P4_ESCR_MSR_TABLE_ENTRY(MSR_P4_IS_ESCR1),
+ P4_ESCR_MSR_TABLE_ENTRY(MSR_P4_ITLB_ESCR0),
+ P4_ESCR_MSR_TABLE_ENTRY(MSR_P4_ITLB_ESCR1),
+ P4_ESCR_MSR_TABLE_ENTRY(MSR_P4_IX_ESCR0),
+ P4_ESCR_MSR_TABLE_ENTRY(MSR_P4_IX_ESCR1),
+ P4_ESCR_MSR_TABLE_ENTRY(MSR_P4_MOB_ESCR0),
+ P4_ESCR_MSR_TABLE_ENTRY(MSR_P4_MOB_ESCR1),
+ P4_ESCR_MSR_TABLE_ENTRY(MSR_P4_MS_ESCR0),
+ P4_ESCR_MSR_TABLE_ENTRY(MSR_P4_MS_ESCR1),
+ P4_ESCR_MSR_TABLE_ENTRY(MSR_P4_PMH_ESCR0),
+ P4_ESCR_MSR_TABLE_ENTRY(MSR_P4_PMH_ESCR1),
+ P4_ESCR_MSR_TABLE_ENTRY(MSR_P4_RAT_ESCR0),
+ P4_ESCR_MSR_TABLE_ENTRY(MSR_P4_RAT_ESCR1),
+ P4_ESCR_MSR_TABLE_ENTRY(MSR_P4_SAAT_ESCR0),
+ P4_ESCR_MSR_TABLE_ENTRY(MSR_P4_SAAT_ESCR1),
+ P4_ESCR_MSR_TABLE_ENTRY(MSR_P4_SSU_ESCR0),
+ P4_ESCR_MSR_TABLE_ENTRY(MSR_P4_SSU_ESCR1),
+ P4_ESCR_MSR_TABLE_ENTRY(MSR_P4_TBPU_ESCR0),
+ P4_ESCR_MSR_TABLE_ENTRY(MSR_P4_TBPU_ESCR1),
+ P4_ESCR_MSR_TABLE_ENTRY(MSR_P4_TC_ESCR0),
+ P4_ESCR_MSR_TABLE_ENTRY(MSR_P4_TC_ESCR1),
+ P4_ESCR_MSR_TABLE_ENTRY(MSR_P4_U2L_ESCR0),
+ P4_ESCR_MSR_TABLE_ENTRY(MSR_P4_U2L_ESCR1),
+};
+
+static int p4_get_escr_idx(unsigned int addr)
+{
+ unsigned int idx = P4_ESCR_MSR_IDX(addr);
+
+ if (unlikely(idx >= P4_ESCR_MSR_TABLE_SIZE ||
+ !p4_escr_table[idx] ||
+ p4_escr_table[idx] != addr)) {
+ WARN_ONCE(1, "P4 PMU: Wrong address passed: %x\n", addr);
+ return -1;
+ }
+
+ return idx;
+}
+
+static int p4_next_cntr(int thread, unsigned long *used_mask,
+ struct p4_event_bind *bind)
+{
+ int i, j;
+
+ for (i = 0; i < P4_CNTR_LIMIT; i++) {
+ j = bind->cntr[thread][i];
+ if (j != -1 && !test_bit(j, used_mask))
+ return j;
+ }
+
+ return -1;
+}
+
+static int p4_pmu_schedule_events(struct cpu_hw_events *cpuc, int n, int *assign)
+{
+ unsigned long used_mask[BITS_TO_LONGS(X86_PMC_IDX_MAX)];
+ unsigned long escr_mask[BITS_TO_LONGS(P4_ESCR_MSR_TABLE_SIZE)];
+ int cpu = smp_processor_id();
+ struct hw_perf_event *hwc;
+ struct p4_event_bind *bind;
+ unsigned int i, thread, num;
+ int cntr_idx, escr_idx;
+ u64 config_alias;
+ int pass;
+
+ bitmap_zero(used_mask, X86_PMC_IDX_MAX);
+ bitmap_zero(escr_mask, P4_ESCR_MSR_TABLE_SIZE);
+
+ for (i = 0, num = n; i < n; i++, num--) {
+
+ hwc = &cpuc->event_list[i]->hw;
+ thread = p4_ht_thread(cpu);
+ pass = 0;
+
+again:
+ /*
+ * It's possible to hit a circular lock
+ * between original and alternative events
+ * if both are scheduled already.
+ */
+ if (pass > 2)
+ goto done;
+
+ bind = p4_config_get_bind(hwc->config);
+ escr_idx = p4_get_escr_idx(bind->escr_msr[thread]);
+ if (unlikely(escr_idx == -1))
+ goto done;
+
+ if (hwc->idx != -1 && !p4_should_swap_ts(hwc->config, cpu)) {
+ cntr_idx = hwc->idx;
+ if (assign)
+ assign[i] = hwc->idx;
+ goto reserve;
+ }
+
+ cntr_idx = p4_next_cntr(thread, used_mask, bind);
+ if (cntr_idx == -1 || test_bit(escr_idx, escr_mask)) {
+ /*
+ * Check whether an event alias is still available.
+ */
+ config_alias = p4_get_alias_event(hwc->config);
+ if (!config_alias)
+ goto done;
+ hwc->config = config_alias;
+ pass++;
+ goto again;
+ }
+ /*
+ * Perf does test runs to see if a whole group can be assigned
+ * together succesfully. There can be multiple rounds of this.
+ * Unfortunately, p4_pmu_swap_config_ts touches the hwc->config
+ * bits, such that the next round of group assignments will
+ * cause the above p4_should_swap_ts to pass instead of fail.
+ * This leads to counters exclusive to thread0 being used by
+ * thread1.
+ *
+ * Solve this with a cheap hack, reset the idx back to -1 to
+ * force a new lookup (p4_next_cntr) to get the right counter
+ * for the right thread.
+ *
+ * This probably doesn't comply with the general spirit of how
+ * perf wants to work, but P4 is special. :-(
+ */
+ if (p4_should_swap_ts(hwc->config, cpu))
+ hwc->idx = -1;
+ p4_pmu_swap_config_ts(hwc, cpu);
+ if (assign)
+ assign[i] = cntr_idx;
+reserve:
+ set_bit(cntr_idx, used_mask);
+ set_bit(escr_idx, escr_mask);
+ }
+
+done:
+ return num ? -EINVAL : 0;
+}
+
+PMU_FORMAT_ATTR(cccr, "config:0-31" );
+PMU_FORMAT_ATTR(escr, "config:32-62");
+PMU_FORMAT_ATTR(ht, "config:63" );
+
+static struct attribute *intel_p4_formats_attr[] = {
+ &format_attr_cccr.attr,
+ &format_attr_escr.attr,
+ &format_attr_ht.attr,
+ NULL,
+};
+
+static __initconst const struct x86_pmu p4_pmu = {
+ .name = "Netburst P4/Xeon",
+ .handle_irq = p4_pmu_handle_irq,
+ .disable_all = p4_pmu_disable_all,
+ .enable_all = p4_pmu_enable_all,
+ .enable = p4_pmu_enable_event,
+ .disable = p4_pmu_disable_event,
+ .eventsel = MSR_P4_BPU_CCCR0,
+ .perfctr = MSR_P4_BPU_PERFCTR0,
+ .event_map = p4_pmu_event_map,
+ .max_events = ARRAY_SIZE(p4_general_events),
+ .get_event_constraints = x86_get_event_constraints,
+ /*
+ * IF HT disabled we may need to use all
+ * ARCH_P4_MAX_CCCR counters simulaneously
+ * though leave it restricted at moment assuming
+ * HT is on
+ */
+ .num_counters = ARCH_P4_MAX_CCCR,
+ .apic = 1,
+ .cntval_bits = ARCH_P4_CNTRVAL_BITS,
+ .cntval_mask = ARCH_P4_CNTRVAL_MASK,
+ .max_period = (1ULL << (ARCH_P4_CNTRVAL_BITS - 1)) - 1,
+ .hw_config = p4_hw_config,
+ .schedule_events = p4_pmu_schedule_events,
+ /*
+ * This handles erratum N15 in intel doc 249199-029,
+ * the counter may not be updated correctly on write
+ * so we need a second write operation to do the trick
+ * (the official workaround didn't work)
+ *
+ * the former idea is taken from OProfile code
+ */
+ .perfctr_second_write = 1,
+
+ .format_attrs = intel_p4_formats_attr,
+};
+
+__init int p4_pmu_init(void)
+{
+ unsigned int low, high;
+ int i, reg;
+
+ /* If we get stripped -- indexing fails */
+ BUILD_BUG_ON(ARCH_P4_MAX_CCCR > INTEL_PMC_MAX_GENERIC);
+
+ rdmsr(MSR_IA32_MISC_ENABLE, low, high);
+ if (!(low & (1 << 7))) {
+ pr_cont("unsupported Netburst CPU model %d ",
+ boot_cpu_data.x86_model);
+ return -ENODEV;
+ }
+
+ memcpy(hw_cache_event_ids, p4_hw_cache_event_ids,
+ sizeof(hw_cache_event_ids));
+
+ pr_cont("Netburst events, ");
+
+ x86_pmu = p4_pmu;
+
+ /*
+ * Even though the counters are configured to interrupt a particular
+ * logical processor when an overflow happens, testing has shown that
+ * on kdump kernels (which uses a single cpu), thread1's counter
+ * continues to run and will report an NMI on thread0. Due to the
+ * overflow bug, this leads to a stream of unknown NMIs.
+ *
+ * Solve this by zero'ing out the registers to mimic a reset.
+ */
+ for (i = 0; i < x86_pmu.num_counters; i++) {
+ reg = x86_pmu_config_addr(i);
+ wrmsrl_safe(reg, 0ULL);
+ }
+
+ return 0;
+}
obj-$(CONFIG_CPU_SUP_UMC_32) += umc.o
ifdef CONFIG_PERF_EVENTS
-obj-$(CONFIG_CPU_SUP_INTEL) += perf_event_p6.o perf_event_p4.o
+obj-$(CONFIG_CPU_SUP_INTEL) += perf_event_p6.o
obj-$(CONFIG_CPU_SUP_INTEL) += perf_event_msr.o
obj-$(CONFIG_CPU_SUP_AMD) += perf_event_msr.o
+++ /dev/null
-/*
- * Netburst Performance Events (P4, old Xeon)
- *
- * Copyright (C) 2010 Parallels, Inc., Cyrill Gorcunov <gorcunov@openvz.org>
- * Copyright (C) 2010 Intel Corporation, Lin Ming <ming.m.lin@intel.com>
- *
- * For licencing details see kernel-base/COPYING
- */
-
-#include <linux/perf_event.h>
-
-#include <asm/perf_event_p4.h>
-#include <asm/hardirq.h>
-#include <asm/apic.h>
-
-#include "perf_event.h"
-
-#define P4_CNTR_LIMIT 3
-/*
- * array indices: 0,1 - HT threads, used with HT enabled cpu
- */
-struct p4_event_bind {
- unsigned int opcode; /* Event code and ESCR selector */
- unsigned int escr_msr[2]; /* ESCR MSR for this event */
- unsigned int escr_emask; /* valid ESCR EventMask bits */
- unsigned int shared; /* event is shared across threads */
- char cntr[2][P4_CNTR_LIMIT]; /* counter index (offset), -1 on abscence */
-};
-
-struct p4_pebs_bind {
- unsigned int metric_pebs;
- unsigned int metric_vert;
-};
-
-/* it sets P4_PEBS_ENABLE_UOP_TAG as well */
-#define P4_GEN_PEBS_BIND(name, pebs, vert) \
- [P4_PEBS_METRIC__##name] = { \
- .metric_pebs = pebs | P4_PEBS_ENABLE_UOP_TAG, \
- .metric_vert = vert, \
- }
-
-/*
- * note we have P4_PEBS_ENABLE_UOP_TAG always set here
- *
- * it's needed for mapping P4_PEBS_CONFIG_METRIC_MASK bits of
- * event configuration to find out which values are to be
- * written into MSR_IA32_PEBS_ENABLE and MSR_P4_PEBS_MATRIX_VERT
- * resgisters
- */
-static struct p4_pebs_bind p4_pebs_bind_map[] = {
- P4_GEN_PEBS_BIND(1stl_cache_load_miss_retired, 0x0000001, 0x0000001),
- P4_GEN_PEBS_BIND(2ndl_cache_load_miss_retired, 0x0000002, 0x0000001),
- P4_GEN_PEBS_BIND(dtlb_load_miss_retired, 0x0000004, 0x0000001),
- P4_GEN_PEBS_BIND(dtlb_store_miss_retired, 0x0000004, 0x0000002),
- P4_GEN_PEBS_BIND(dtlb_all_miss_retired, 0x0000004, 0x0000003),
- P4_GEN_PEBS_BIND(tagged_mispred_branch, 0x0018000, 0x0000010),
- P4_GEN_PEBS_BIND(mob_load_replay_retired, 0x0000200, 0x0000001),
- P4_GEN_PEBS_BIND(split_load_retired, 0x0000400, 0x0000001),
- P4_GEN_PEBS_BIND(split_store_retired, 0x0000400, 0x0000002),
-};
-
-/*
- * Note that we don't use CCCR1 here, there is an
- * exception for P4_BSQ_ALLOCATION but we just have
- * no workaround
- *
- * consider this binding as resources which particular
- * event may borrow, it doesn't contain EventMask,
- * Tags and friends -- they are left to a caller
- */
-static struct p4_event_bind p4_event_bind_map[] = {
- [P4_EVENT_TC_DELIVER_MODE] = {
- .opcode = P4_OPCODE(P4_EVENT_TC_DELIVER_MODE),
- .escr_msr = { MSR_P4_TC_ESCR0, MSR_P4_TC_ESCR1 },
- .escr_emask =
- P4_ESCR_EMASK_BIT(P4_EVENT_TC_DELIVER_MODE, DD) |
- P4_ESCR_EMASK_BIT(P4_EVENT_TC_DELIVER_MODE, DB) |
- P4_ESCR_EMASK_BIT(P4_EVENT_TC_DELIVER_MODE, DI) |
- P4_ESCR_EMASK_BIT(P4_EVENT_TC_DELIVER_MODE, BD) |
- P4_ESCR_EMASK_BIT(P4_EVENT_TC_DELIVER_MODE, BB) |
- P4_ESCR_EMASK_BIT(P4_EVENT_TC_DELIVER_MODE, BI) |
- P4_ESCR_EMASK_BIT(P4_EVENT_TC_DELIVER_MODE, ID),
- .shared = 1,
- .cntr = { {4, 5, -1}, {6, 7, -1} },
- },
- [P4_EVENT_BPU_FETCH_REQUEST] = {
- .opcode = P4_OPCODE(P4_EVENT_BPU_FETCH_REQUEST),
- .escr_msr = { MSR_P4_BPU_ESCR0, MSR_P4_BPU_ESCR1 },
- .escr_emask =
- P4_ESCR_EMASK_BIT(P4_EVENT_BPU_FETCH_REQUEST, TCMISS),
- .cntr = { {0, -1, -1}, {2, -1, -1} },
- },
- [P4_EVENT_ITLB_REFERENCE] = {
- .opcode = P4_OPCODE(P4_EVENT_ITLB_REFERENCE),
- .escr_msr = { MSR_P4_ITLB_ESCR0, MSR_P4_ITLB_ESCR1 },
- .escr_emask =
- P4_ESCR_EMASK_BIT(P4_EVENT_ITLB_REFERENCE, HIT) |
- P4_ESCR_EMASK_BIT(P4_EVENT_ITLB_REFERENCE, MISS) |
- P4_ESCR_EMASK_BIT(P4_EVENT_ITLB_REFERENCE, HIT_UK),
- .cntr = { {0, -1, -1}, {2, -1, -1} },
- },
- [P4_EVENT_MEMORY_CANCEL] = {
- .opcode = P4_OPCODE(P4_EVENT_MEMORY_CANCEL),
- .escr_msr = { MSR_P4_DAC_ESCR0, MSR_P4_DAC_ESCR1 },
- .escr_emask =
- P4_ESCR_EMASK_BIT(P4_EVENT_MEMORY_CANCEL, ST_RB_FULL) |
- P4_ESCR_EMASK_BIT(P4_EVENT_MEMORY_CANCEL, 64K_CONF),
- .cntr = { {8, 9, -1}, {10, 11, -1} },
- },
- [P4_EVENT_MEMORY_COMPLETE] = {
- .opcode = P4_OPCODE(P4_EVENT_MEMORY_COMPLETE),
- .escr_msr = { MSR_P4_SAAT_ESCR0 , MSR_P4_SAAT_ESCR1 },
- .escr_emask =
- P4_ESCR_EMASK_BIT(P4_EVENT_MEMORY_COMPLETE, LSC) |
- P4_ESCR_EMASK_BIT(P4_EVENT_MEMORY_COMPLETE, SSC),
- .cntr = { {8, 9, -1}, {10, 11, -1} },
- },
- [P4_EVENT_LOAD_PORT_REPLAY] = {
- .opcode = P4_OPCODE(P4_EVENT_LOAD_PORT_REPLAY),
- .escr_msr = { MSR_P4_SAAT_ESCR0, MSR_P4_SAAT_ESCR1 },
- .escr_emask =
- P4_ESCR_EMASK_BIT(P4_EVENT_LOAD_PORT_REPLAY, SPLIT_LD),
- .cntr = { {8, 9, -1}, {10, 11, -1} },
- },
- [P4_EVENT_STORE_PORT_REPLAY] = {
- .opcode = P4_OPCODE(P4_EVENT_STORE_PORT_REPLAY),
- .escr_msr = { MSR_P4_SAAT_ESCR0 , MSR_P4_SAAT_ESCR1 },
- .escr_emask =
- P4_ESCR_EMASK_BIT(P4_EVENT_STORE_PORT_REPLAY, SPLIT_ST),
- .cntr = { {8, 9, -1}, {10, 11, -1} },
- },
- [P4_EVENT_MOB_LOAD_REPLAY] = {
- .opcode = P4_OPCODE(P4_EVENT_MOB_LOAD_REPLAY),
- .escr_msr = { MSR_P4_MOB_ESCR0, MSR_P4_MOB_ESCR1 },
- .escr_emask =
- P4_ESCR_EMASK_BIT(P4_EVENT_MOB_LOAD_REPLAY, NO_STA) |
- P4_ESCR_EMASK_BIT(P4_EVENT_MOB_LOAD_REPLAY, NO_STD) |
- P4_ESCR_EMASK_BIT(P4_EVENT_MOB_LOAD_REPLAY, PARTIAL_DATA) |
- P4_ESCR_EMASK_BIT(P4_EVENT_MOB_LOAD_REPLAY, UNALGN_ADDR),
- .cntr = { {0, -1, -1}, {2, -1, -1} },
- },
- [P4_EVENT_PAGE_WALK_TYPE] = {
- .opcode = P4_OPCODE(P4_EVENT_PAGE_WALK_TYPE),
- .escr_msr = { MSR_P4_PMH_ESCR0, MSR_P4_PMH_ESCR1 },
- .escr_emask =
- P4_ESCR_EMASK_BIT(P4_EVENT_PAGE_WALK_TYPE, DTMISS) |
- P4_ESCR_EMASK_BIT(P4_EVENT_PAGE_WALK_TYPE, ITMISS),
- .shared = 1,
- .cntr = { {0, -1, -1}, {2, -1, -1} },
- },
- [P4_EVENT_BSQ_CACHE_REFERENCE] = {
- .opcode = P4_OPCODE(P4_EVENT_BSQ_CACHE_REFERENCE),
- .escr_msr = { MSR_P4_BSU_ESCR0, MSR_P4_BSU_ESCR1 },
- .escr_emask =
- P4_ESCR_EMASK_BIT(P4_EVENT_BSQ_CACHE_REFERENCE, RD_2ndL_HITS) |
- P4_ESCR_EMASK_BIT(P4_EVENT_BSQ_CACHE_REFERENCE, RD_2ndL_HITE) |
- P4_ESCR_EMASK_BIT(P4_EVENT_BSQ_CACHE_REFERENCE, RD_2ndL_HITM) |
- P4_ESCR_EMASK_BIT(P4_EVENT_BSQ_CACHE_REFERENCE, RD_3rdL_HITS) |
- P4_ESCR_EMASK_BIT(P4_EVENT_BSQ_CACHE_REFERENCE, RD_3rdL_HITE) |
- P4_ESCR_EMASK_BIT(P4_EVENT_BSQ_CACHE_REFERENCE, RD_3rdL_HITM) |
- P4_ESCR_EMASK_BIT(P4_EVENT_BSQ_CACHE_REFERENCE, RD_2ndL_MISS) |
- P4_ESCR_EMASK_BIT(P4_EVENT_BSQ_CACHE_REFERENCE, RD_3rdL_MISS) |
- P4_ESCR_EMASK_BIT(P4_EVENT_BSQ_CACHE_REFERENCE, WR_2ndL_MISS),
- .cntr = { {0, -1, -1}, {2, -1, -1} },
- },
- [P4_EVENT_IOQ_ALLOCATION] = {
- .opcode = P4_OPCODE(P4_EVENT_IOQ_ALLOCATION),
- .escr_msr = { MSR_P4_FSB_ESCR0, MSR_P4_FSB_ESCR1 },
- .escr_emask =
- P4_ESCR_EMASK_BIT(P4_EVENT_IOQ_ALLOCATION, DEFAULT) |
- P4_ESCR_EMASK_BIT(P4_EVENT_IOQ_ALLOCATION, ALL_READ) |
- P4_ESCR_EMASK_BIT(P4_EVENT_IOQ_ALLOCATION, ALL_WRITE) |
- P4_ESCR_EMASK_BIT(P4_EVENT_IOQ_ALLOCATION, MEM_UC) |
- P4_ESCR_EMASK_BIT(P4_EVENT_IOQ_ALLOCATION, MEM_WC) |
- P4_ESCR_EMASK_BIT(P4_EVENT_IOQ_ALLOCATION, MEM_WT) |
- P4_ESCR_EMASK_BIT(P4_EVENT_IOQ_ALLOCATION, MEM_WP) |
- P4_ESCR_EMASK_BIT(P4_EVENT_IOQ_ALLOCATION, MEM_WB) |
- P4_ESCR_EMASK_BIT(P4_EVENT_IOQ_ALLOCATION, OWN) |
- P4_ESCR_EMASK_BIT(P4_EVENT_IOQ_ALLOCATION, OTHER) |
- P4_ESCR_EMASK_BIT(P4_EVENT_IOQ_ALLOCATION, PREFETCH),
- .cntr = { {0, -1, -1}, {2, -1, -1} },
- },
- [P4_EVENT_IOQ_ACTIVE_ENTRIES] = { /* shared ESCR */
- .opcode = P4_OPCODE(P4_EVENT_IOQ_ACTIVE_ENTRIES),
- .escr_msr = { MSR_P4_FSB_ESCR1, MSR_P4_FSB_ESCR1 },
- .escr_emask =
- P4_ESCR_EMASK_BIT(P4_EVENT_IOQ_ACTIVE_ENTRIES, DEFAULT) |
- P4_ESCR_EMASK_BIT(P4_EVENT_IOQ_ACTIVE_ENTRIES, ALL_READ) |
- P4_ESCR_EMASK_BIT(P4_EVENT_IOQ_ACTIVE_ENTRIES, ALL_WRITE) |
- P4_ESCR_EMASK_BIT(P4_EVENT_IOQ_ACTIVE_ENTRIES, MEM_UC) |
- P4_ESCR_EMASK_BIT(P4_EVENT_IOQ_ACTIVE_ENTRIES, MEM_WC) |
- P4_ESCR_EMASK_BIT(P4_EVENT_IOQ_ACTIVE_ENTRIES, MEM_WT) |
- P4_ESCR_EMASK_BIT(P4_EVENT_IOQ_ACTIVE_ENTRIES, MEM_WP) |
- P4_ESCR_EMASK_BIT(P4_EVENT_IOQ_ACTIVE_ENTRIES, MEM_WB) |
- P4_ESCR_EMASK_BIT(P4_EVENT_IOQ_ACTIVE_ENTRIES, OWN) |
- P4_ESCR_EMASK_BIT(P4_EVENT_IOQ_ACTIVE_ENTRIES, OTHER) |
- P4_ESCR_EMASK_BIT(P4_EVENT_IOQ_ACTIVE_ENTRIES, PREFETCH),
- .cntr = { {2, -1, -1}, {3, -1, -1} },
- },
- [P4_EVENT_FSB_DATA_ACTIVITY] = {
- .opcode = P4_OPCODE(P4_EVENT_FSB_DATA_ACTIVITY),
- .escr_msr = { MSR_P4_FSB_ESCR0, MSR_P4_FSB_ESCR1 },
- .escr_emask =
- P4_ESCR_EMASK_BIT(P4_EVENT_FSB_DATA_ACTIVITY, DRDY_DRV) |
- P4_ESCR_EMASK_BIT(P4_EVENT_FSB_DATA_ACTIVITY, DRDY_OWN) |
- P4_ESCR_EMASK_BIT(P4_EVENT_FSB_DATA_ACTIVITY, DRDY_OTHER) |
- P4_ESCR_EMASK_BIT(P4_EVENT_FSB_DATA_ACTIVITY, DBSY_DRV) |
- P4_ESCR_EMASK_BIT(P4_EVENT_FSB_DATA_ACTIVITY, DBSY_OWN) |
- P4_ESCR_EMASK_BIT(P4_EVENT_FSB_DATA_ACTIVITY, DBSY_OTHER),
- .shared = 1,
- .cntr = { {0, -1, -1}, {2, -1, -1} },
- },
- [P4_EVENT_BSQ_ALLOCATION] = { /* shared ESCR, broken CCCR1 */
- .opcode = P4_OPCODE(P4_EVENT_BSQ_ALLOCATION),
- .escr_msr = { MSR_P4_BSU_ESCR0, MSR_P4_BSU_ESCR0 },
- .escr_emask =
- P4_ESCR_EMASK_BIT(P4_EVENT_BSQ_ALLOCATION, REQ_TYPE0) |
- P4_ESCR_EMASK_BIT(P4_EVENT_BSQ_ALLOCATION, REQ_TYPE1) |
- P4_ESCR_EMASK_BIT(P4_EVENT_BSQ_ALLOCATION, REQ_LEN0) |
- P4_ESCR_EMASK_BIT(P4_EVENT_BSQ_ALLOCATION, REQ_LEN1) |
- P4_ESCR_EMASK_BIT(P4_EVENT_BSQ_ALLOCATION, REQ_IO_TYPE) |
- P4_ESCR_EMASK_BIT(P4_EVENT_BSQ_ALLOCATION, REQ_LOCK_TYPE) |
- P4_ESCR_EMASK_BIT(P4_EVENT_BSQ_ALLOCATION, REQ_CACHE_TYPE) |
- P4_ESCR_EMASK_BIT(P4_EVENT_BSQ_ALLOCATION, REQ_SPLIT_TYPE) |
- P4_ESCR_EMASK_BIT(P4_EVENT_BSQ_ALLOCATION, REQ_DEM_TYPE) |
- P4_ESCR_EMASK_BIT(P4_EVENT_BSQ_ALLOCATION, REQ_ORD_TYPE) |
- P4_ESCR_EMASK_BIT(P4_EVENT_BSQ_ALLOCATION, MEM_TYPE0) |
- P4_ESCR_EMASK_BIT(P4_EVENT_BSQ_ALLOCATION, MEM_TYPE1) |
- P4_ESCR_EMASK_BIT(P4_EVENT_BSQ_ALLOCATION, MEM_TYPE2),
- .cntr = { {0, -1, -1}, {1, -1, -1} },
- },
- [P4_EVENT_BSQ_ACTIVE_ENTRIES] = { /* shared ESCR */
- .opcode = P4_OPCODE(P4_EVENT_BSQ_ACTIVE_ENTRIES),
- .escr_msr = { MSR_P4_BSU_ESCR1 , MSR_P4_BSU_ESCR1 },
- .escr_emask =
- P4_ESCR_EMASK_BIT(P4_EVENT_BSQ_ACTIVE_ENTRIES, REQ_TYPE0) |
- P4_ESCR_EMASK_BIT(P4_EVENT_BSQ_ACTIVE_ENTRIES, REQ_TYPE1) |
- P4_ESCR_EMASK_BIT(P4_EVENT_BSQ_ACTIVE_ENTRIES, REQ_LEN0) |
- P4_ESCR_EMASK_BIT(P4_EVENT_BSQ_ACTIVE_ENTRIES, REQ_LEN1) |
- P4_ESCR_EMASK_BIT(P4_EVENT_BSQ_ACTIVE_ENTRIES, REQ_IO_TYPE) |
- P4_ESCR_EMASK_BIT(P4_EVENT_BSQ_ACTIVE_ENTRIES, REQ_LOCK_TYPE) |
- P4_ESCR_EMASK_BIT(P4_EVENT_BSQ_ACTIVE_ENTRIES, REQ_CACHE_TYPE) |
- P4_ESCR_EMASK_BIT(P4_EVENT_BSQ_ACTIVE_ENTRIES, REQ_SPLIT_TYPE) |
- P4_ESCR_EMASK_BIT(P4_EVENT_BSQ_ACTIVE_ENTRIES, REQ_DEM_TYPE) |
- P4_ESCR_EMASK_BIT(P4_EVENT_BSQ_ACTIVE_ENTRIES, REQ_ORD_TYPE) |
- P4_ESCR_EMASK_BIT(P4_EVENT_BSQ_ACTIVE_ENTRIES, MEM_TYPE0) |
- P4_ESCR_EMASK_BIT(P4_EVENT_BSQ_ACTIVE_ENTRIES, MEM_TYPE1) |
- P4_ESCR_EMASK_BIT(P4_EVENT_BSQ_ACTIVE_ENTRIES, MEM_TYPE2),
- .cntr = { {2, -1, -1}, {3, -1, -1} },
- },
- [P4_EVENT_SSE_INPUT_ASSIST] = {
- .opcode = P4_OPCODE(P4_EVENT_SSE_INPUT_ASSIST),
- .escr_msr = { MSR_P4_FIRM_ESCR0, MSR_P4_FIRM_ESCR1 },
- .escr_emask =
- P4_ESCR_EMASK_BIT(P4_EVENT_SSE_INPUT_ASSIST, ALL),
- .shared = 1,
- .cntr = { {8, 9, -1}, {10, 11, -1} },
- },
- [P4_EVENT_PACKED_SP_UOP] = {
- .opcode = P4_OPCODE(P4_EVENT_PACKED_SP_UOP),
- .escr_msr = { MSR_P4_FIRM_ESCR0, MSR_P4_FIRM_ESCR1 },
- .escr_emask =
- P4_ESCR_EMASK_BIT(P4_EVENT_PACKED_SP_UOP, ALL),
- .shared = 1,
- .cntr = { {8, 9, -1}, {10, 11, -1} },
- },
- [P4_EVENT_PACKED_DP_UOP] = {
- .opcode = P4_OPCODE(P4_EVENT_PACKED_DP_UOP),
- .escr_msr = { MSR_P4_FIRM_ESCR0, MSR_P4_FIRM_ESCR1 },
- .escr_emask =
- P4_ESCR_EMASK_BIT(P4_EVENT_PACKED_DP_UOP, ALL),
- .shared = 1,
- .cntr = { {8, 9, -1}, {10, 11, -1} },
- },
- [P4_EVENT_SCALAR_SP_UOP] = {
- .opcode = P4_OPCODE(P4_EVENT_SCALAR_SP_UOP),
- .escr_msr = { MSR_P4_FIRM_ESCR0, MSR_P4_FIRM_ESCR1 },
- .escr_emask =
- P4_ESCR_EMASK_BIT(P4_EVENT_SCALAR_SP_UOP, ALL),
- .shared = 1,
- .cntr = { {8, 9, -1}, {10, 11, -1} },
- },
- [P4_EVENT_SCALAR_DP_UOP] = {
- .opcode = P4_OPCODE(P4_EVENT_SCALAR_DP_UOP),
- .escr_msr = { MSR_P4_FIRM_ESCR0, MSR_P4_FIRM_ESCR1 },
- .escr_emask =
- P4_ESCR_EMASK_BIT(P4_EVENT_SCALAR_DP_UOP, ALL),
- .shared = 1,
- .cntr = { {8, 9, -1}, {10, 11, -1} },
- },
- [P4_EVENT_64BIT_MMX_UOP] = {
- .opcode = P4_OPCODE(P4_EVENT_64BIT_MMX_UOP),
- .escr_msr = { MSR_P4_FIRM_ESCR0, MSR_P4_FIRM_ESCR1 },
- .escr_emask =
- P4_ESCR_EMASK_BIT(P4_EVENT_64BIT_MMX_UOP, ALL),
- .shared = 1,
- .cntr = { {8, 9, -1}, {10, 11, -1} },
- },
- [P4_EVENT_128BIT_MMX_UOP] = {
- .opcode = P4_OPCODE(P4_EVENT_128BIT_MMX_UOP),
- .escr_msr = { MSR_P4_FIRM_ESCR0, MSR_P4_FIRM_ESCR1 },
- .escr_emask =
- P4_ESCR_EMASK_BIT(P4_EVENT_128BIT_MMX_UOP, ALL),
- .shared = 1,
- .cntr = { {8, 9, -1}, {10, 11, -1} },
- },
- [P4_EVENT_X87_FP_UOP] = {
- .opcode = P4_OPCODE(P4_EVENT_X87_FP_UOP),
- .escr_msr = { MSR_P4_FIRM_ESCR0, MSR_P4_FIRM_ESCR1 },
- .escr_emask =
- P4_ESCR_EMASK_BIT(P4_EVENT_X87_FP_UOP, ALL),
- .shared = 1,
- .cntr = { {8, 9, -1}, {10, 11, -1} },
- },
- [P4_EVENT_TC_MISC] = {
- .opcode = P4_OPCODE(P4_EVENT_TC_MISC),
- .escr_msr = { MSR_P4_TC_ESCR0, MSR_P4_TC_ESCR1 },
- .escr_emask =
- P4_ESCR_EMASK_BIT(P4_EVENT_TC_MISC, FLUSH),
- .cntr = { {4, 5, -1}, {6, 7, -1} },
- },
- [P4_EVENT_GLOBAL_POWER_EVENTS] = {
- .opcode = P4_OPCODE(P4_EVENT_GLOBAL_POWER_EVENTS),
- .escr_msr = { MSR_P4_FSB_ESCR0, MSR_P4_FSB_ESCR1 },
- .escr_emask =
- P4_ESCR_EMASK_BIT(P4_EVENT_GLOBAL_POWER_EVENTS, RUNNING),
- .cntr = { {0, -1, -1}, {2, -1, -1} },
- },
- [P4_EVENT_TC_MS_XFER] = {
- .opcode = P4_OPCODE(P4_EVENT_TC_MS_XFER),
- .escr_msr = { MSR_P4_MS_ESCR0, MSR_P4_MS_ESCR1 },
- .escr_emask =
- P4_ESCR_EMASK_BIT(P4_EVENT_TC_MS_XFER, CISC),
- .cntr = { {4, 5, -1}, {6, 7, -1} },
- },
- [P4_EVENT_UOP_QUEUE_WRITES] = {
- .opcode = P4_OPCODE(P4_EVENT_UOP_QUEUE_WRITES),
- .escr_msr = { MSR_P4_MS_ESCR0, MSR_P4_MS_ESCR1 },
- .escr_emask =
- P4_ESCR_EMASK_BIT(P4_EVENT_UOP_QUEUE_WRITES, FROM_TC_BUILD) |
- P4_ESCR_EMASK_BIT(P4_EVENT_UOP_QUEUE_WRITES, FROM_TC_DELIVER) |
- P4_ESCR_EMASK_BIT(P4_EVENT_UOP_QUEUE_WRITES, FROM_ROM),
- .cntr = { {4, 5, -1}, {6, 7, -1} },
- },
- [P4_EVENT_RETIRED_MISPRED_BRANCH_TYPE] = {
- .opcode = P4_OPCODE(P4_EVENT_RETIRED_MISPRED_BRANCH_TYPE),
- .escr_msr = { MSR_P4_TBPU_ESCR0 , MSR_P4_TBPU_ESCR0 },
- .escr_emask =
- P4_ESCR_EMASK_BIT(P4_EVENT_RETIRED_MISPRED_BRANCH_TYPE, CONDITIONAL) |
- P4_ESCR_EMASK_BIT(P4_EVENT_RETIRED_MISPRED_BRANCH_TYPE, CALL) |
- P4_ESCR_EMASK_BIT(P4_EVENT_RETIRED_MISPRED_BRANCH_TYPE, RETURN) |
- P4_ESCR_EMASK_BIT(P4_EVENT_RETIRED_MISPRED_BRANCH_TYPE, INDIRECT),
- .cntr = { {4, 5, -1}, {6, 7, -1} },
- },
- [P4_EVENT_RETIRED_BRANCH_TYPE] = {
- .opcode = P4_OPCODE(P4_EVENT_RETIRED_BRANCH_TYPE),
- .escr_msr = { MSR_P4_TBPU_ESCR0 , MSR_P4_TBPU_ESCR1 },
- .escr_emask =
- P4_ESCR_EMASK_BIT(P4_EVENT_RETIRED_BRANCH_TYPE, CONDITIONAL) |
- P4_ESCR_EMASK_BIT(P4_EVENT_RETIRED_BRANCH_TYPE, CALL) |
- P4_ESCR_EMASK_BIT(P4_EVENT_RETIRED_BRANCH_TYPE, RETURN) |
- P4_ESCR_EMASK_BIT(P4_EVENT_RETIRED_BRANCH_TYPE, INDIRECT),
- .cntr = { {4, 5, -1}, {6, 7, -1} },
- },
- [P4_EVENT_RESOURCE_STALL] = {
- .opcode = P4_OPCODE(P4_EVENT_RESOURCE_STALL),
- .escr_msr = { MSR_P4_ALF_ESCR0, MSR_P4_ALF_ESCR1 },
- .escr_emask =
- P4_ESCR_EMASK_BIT(P4_EVENT_RESOURCE_STALL, SBFULL),
- .cntr = { {12, 13, 16}, {14, 15, 17} },
- },
- [P4_EVENT_WC_BUFFER] = {
- .opcode = P4_OPCODE(P4_EVENT_WC_BUFFER),
- .escr_msr = { MSR_P4_DAC_ESCR0, MSR_P4_DAC_ESCR1 },
- .escr_emask =
- P4_ESCR_EMASK_BIT(P4_EVENT_WC_BUFFER, WCB_EVICTS) |
- P4_ESCR_EMASK_BIT(P4_EVENT_WC_BUFFER, WCB_FULL_EVICTS),
- .shared = 1,
- .cntr = { {8, 9, -1}, {10, 11, -1} },
- },
- [P4_EVENT_B2B_CYCLES] = {
- .opcode = P4_OPCODE(P4_EVENT_B2B_CYCLES),
- .escr_msr = { MSR_P4_FSB_ESCR0, MSR_P4_FSB_ESCR1 },
- .escr_emask = 0,
- .cntr = { {0, -1, -1}, {2, -1, -1} },
- },
- [P4_EVENT_BNR] = {
- .opcode = P4_OPCODE(P4_EVENT_BNR),
- .escr_msr = { MSR_P4_FSB_ESCR0, MSR_P4_FSB_ESCR1 },
- .escr_emask = 0,
- .cntr = { {0, -1, -1}, {2, -1, -1} },
- },
- [P4_EVENT_SNOOP] = {
- .opcode = P4_OPCODE(P4_EVENT_SNOOP),
- .escr_msr = { MSR_P4_FSB_ESCR0, MSR_P4_FSB_ESCR1 },
- .escr_emask = 0,
- .cntr = { {0, -1, -1}, {2, -1, -1} },
- },
- [P4_EVENT_RESPONSE] = {
- .opcode = P4_OPCODE(P4_EVENT_RESPONSE),
- .escr_msr = { MSR_P4_FSB_ESCR0, MSR_P4_FSB_ESCR1 },
- .escr_emask = 0,
- .cntr = { {0, -1, -1}, {2, -1, -1} },
- },
- [P4_EVENT_FRONT_END_EVENT] = {
- .opcode = P4_OPCODE(P4_EVENT_FRONT_END_EVENT),
- .escr_msr = { MSR_P4_CRU_ESCR2, MSR_P4_CRU_ESCR3 },
- .escr_emask =
- P4_ESCR_EMASK_BIT(P4_EVENT_FRONT_END_EVENT, NBOGUS) |
- P4_ESCR_EMASK_BIT(P4_EVENT_FRONT_END_EVENT, BOGUS),
- .cntr = { {12, 13, 16}, {14, 15, 17} },
- },
- [P4_EVENT_EXECUTION_EVENT] = {
- .opcode = P4_OPCODE(P4_EVENT_EXECUTION_EVENT),
- .escr_msr = { MSR_P4_CRU_ESCR2, MSR_P4_CRU_ESCR3 },
- .escr_emask =
- P4_ESCR_EMASK_BIT(P4_EVENT_EXECUTION_EVENT, NBOGUS0) |
- P4_ESCR_EMASK_BIT(P4_EVENT_EXECUTION_EVENT, NBOGUS1) |
- P4_ESCR_EMASK_BIT(P4_EVENT_EXECUTION_EVENT, NBOGUS2) |
- P4_ESCR_EMASK_BIT(P4_EVENT_EXECUTION_EVENT, NBOGUS3) |
- P4_ESCR_EMASK_BIT(P4_EVENT_EXECUTION_EVENT, BOGUS0) |
- P4_ESCR_EMASK_BIT(P4_EVENT_EXECUTION_EVENT, BOGUS1) |
- P4_ESCR_EMASK_BIT(P4_EVENT_EXECUTION_EVENT, BOGUS2) |
- P4_ESCR_EMASK_BIT(P4_EVENT_EXECUTION_EVENT, BOGUS3),
- .cntr = { {12, 13, 16}, {14, 15, 17} },
- },
- [P4_EVENT_REPLAY_EVENT] = {
- .opcode = P4_OPCODE(P4_EVENT_REPLAY_EVENT),
- .escr_msr = { MSR_P4_CRU_ESCR2, MSR_P4_CRU_ESCR3 },
- .escr_emask =
- P4_ESCR_EMASK_BIT(P4_EVENT_REPLAY_EVENT, NBOGUS) |
- P4_ESCR_EMASK_BIT(P4_EVENT_REPLAY_EVENT, BOGUS),
- .cntr = { {12, 13, 16}, {14, 15, 17} },
- },
- [P4_EVENT_INSTR_RETIRED] = {
- .opcode = P4_OPCODE(P4_EVENT_INSTR_RETIRED),
- .escr_msr = { MSR_P4_CRU_ESCR0, MSR_P4_CRU_ESCR1 },
- .escr_emask =
- P4_ESCR_EMASK_BIT(P4_EVENT_INSTR_RETIRED, NBOGUSNTAG) |
- P4_ESCR_EMASK_BIT(P4_EVENT_INSTR_RETIRED, NBOGUSTAG) |
- P4_ESCR_EMASK_BIT(P4_EVENT_INSTR_RETIRED, BOGUSNTAG) |
- P4_ESCR_EMASK_BIT(P4_EVENT_INSTR_RETIRED, BOGUSTAG),
- .cntr = { {12, 13, 16}, {14, 15, 17} },
- },
- [P4_EVENT_UOPS_RETIRED] = {
- .opcode = P4_OPCODE(P4_EVENT_UOPS_RETIRED),
- .escr_msr = { MSR_P4_CRU_ESCR0, MSR_P4_CRU_ESCR1 },
- .escr_emask =
- P4_ESCR_EMASK_BIT(P4_EVENT_UOPS_RETIRED, NBOGUS) |
- P4_ESCR_EMASK_BIT(P4_EVENT_UOPS_RETIRED, BOGUS),
- .cntr = { {12, 13, 16}, {14, 15, 17} },
- },
- [P4_EVENT_UOP_TYPE] = {
- .opcode = P4_OPCODE(P4_EVENT_UOP_TYPE),
- .escr_msr = { MSR_P4_RAT_ESCR0, MSR_P4_RAT_ESCR1 },
- .escr_emask =
- P4_ESCR_EMASK_BIT(P4_EVENT_UOP_TYPE, TAGLOADS) |
- P4_ESCR_EMASK_BIT(P4_EVENT_UOP_TYPE, TAGSTORES),
- .cntr = { {12, 13, 16}, {14, 15, 17} },
- },
- [P4_EVENT_BRANCH_RETIRED] = {
- .opcode = P4_OPCODE(P4_EVENT_BRANCH_RETIRED),
- .escr_msr = { MSR_P4_CRU_ESCR2, MSR_P4_CRU_ESCR3 },
- .escr_emask =
- P4_ESCR_EMASK_BIT(P4_EVENT_BRANCH_RETIRED, MMNP) |
- P4_ESCR_EMASK_BIT(P4_EVENT_BRANCH_RETIRED, MMNM) |
- P4_ESCR_EMASK_BIT(P4_EVENT_BRANCH_RETIRED, MMTP) |
- P4_ESCR_EMASK_BIT(P4_EVENT_BRANCH_RETIRED, MMTM),
- .cntr = { {12, 13, 16}, {14, 15, 17} },
- },
- [P4_EVENT_MISPRED_BRANCH_RETIRED] = {
- .opcode = P4_OPCODE(P4_EVENT_MISPRED_BRANCH_RETIRED),
- .escr_msr = { MSR_P4_CRU_ESCR0, MSR_P4_CRU_ESCR1 },
- .escr_emask =
- P4_ESCR_EMASK_BIT(P4_EVENT_MISPRED_BRANCH_RETIRED, NBOGUS),
- .cntr = { {12, 13, 16}, {14, 15, 17} },
- },
- [P4_EVENT_X87_ASSIST] = {
- .opcode = P4_OPCODE(P4_EVENT_X87_ASSIST),
- .escr_msr = { MSR_P4_CRU_ESCR2, MSR_P4_CRU_ESCR3 },
- .escr_emask =
- P4_ESCR_EMASK_BIT(P4_EVENT_X87_ASSIST, FPSU) |
- P4_ESCR_EMASK_BIT(P4_EVENT_X87_ASSIST, FPSO) |
- P4_ESCR_EMASK_BIT(P4_EVENT_X87_ASSIST, POAO) |
- P4_ESCR_EMASK_BIT(P4_EVENT_X87_ASSIST, POAU) |
- P4_ESCR_EMASK_BIT(P4_EVENT_X87_ASSIST, PREA),
- .cntr = { {12, 13, 16}, {14, 15, 17} },
- },
- [P4_EVENT_MACHINE_CLEAR] = {
- .opcode = P4_OPCODE(P4_EVENT_MACHINE_CLEAR),
- .escr_msr = { MSR_P4_CRU_ESCR2, MSR_P4_CRU_ESCR3 },
- .escr_emask =
- P4_ESCR_EMASK_BIT(P4_EVENT_MACHINE_CLEAR, CLEAR) |
- P4_ESCR_EMASK_BIT(P4_EVENT_MACHINE_CLEAR, MOCLEAR) |
- P4_ESCR_EMASK_BIT(P4_EVENT_MACHINE_CLEAR, SMCLEAR),
- .cntr = { {12, 13, 16}, {14, 15, 17} },
- },
- [P4_EVENT_INSTR_COMPLETED] = {
- .opcode = P4_OPCODE(P4_EVENT_INSTR_COMPLETED),
- .escr_msr = { MSR_P4_CRU_ESCR0, MSR_P4_CRU_ESCR1 },
- .escr_emask =
- P4_ESCR_EMASK_BIT(P4_EVENT_INSTR_COMPLETED, NBOGUS) |
- P4_ESCR_EMASK_BIT(P4_EVENT_INSTR_COMPLETED, BOGUS),
- .cntr = { {12, 13, 16}, {14, 15, 17} },
- },
-};
-
-#define P4_GEN_CACHE_EVENT(event, bit, metric) \
- p4_config_pack_escr(P4_ESCR_EVENT(event) | \
- P4_ESCR_EMASK_BIT(event, bit)) | \
- p4_config_pack_cccr(metric | \
- P4_CCCR_ESEL(P4_OPCODE_ESEL(P4_OPCODE(event))))
-
-static __initconst const u64 p4_hw_cache_event_ids
- [PERF_COUNT_HW_CACHE_MAX]
- [PERF_COUNT_HW_CACHE_OP_MAX]
- [PERF_COUNT_HW_CACHE_RESULT_MAX] =
-{
- [ C(L1D ) ] = {
- [ C(OP_READ) ] = {
- [ C(RESULT_ACCESS) ] = 0x0,
- [ C(RESULT_MISS) ] = P4_GEN_CACHE_EVENT(P4_EVENT_REPLAY_EVENT, NBOGUS,
- P4_PEBS_METRIC__1stl_cache_load_miss_retired),
- },
- },
- [ C(LL ) ] = {
- [ C(OP_READ) ] = {
- [ C(RESULT_ACCESS) ] = 0x0,
- [ C(RESULT_MISS) ] = P4_GEN_CACHE_EVENT(P4_EVENT_REPLAY_EVENT, NBOGUS,
- P4_PEBS_METRIC__2ndl_cache_load_miss_retired),
- },
-},
- [ C(DTLB) ] = {
- [ C(OP_READ) ] = {
- [ C(RESULT_ACCESS) ] = 0x0,
- [ C(RESULT_MISS) ] = P4_GEN_CACHE_EVENT(P4_EVENT_REPLAY_EVENT, NBOGUS,
- P4_PEBS_METRIC__dtlb_load_miss_retired),
- },
- [ C(OP_WRITE) ] = {
- [ C(RESULT_ACCESS) ] = 0x0,
- [ C(RESULT_MISS) ] = P4_GEN_CACHE_EVENT(P4_EVENT_REPLAY_EVENT, NBOGUS,
- P4_PEBS_METRIC__dtlb_store_miss_retired),
- },
- },
- [ C(ITLB) ] = {
- [ C(OP_READ) ] = {
- [ C(RESULT_ACCESS) ] = P4_GEN_CACHE_EVENT(P4_EVENT_ITLB_REFERENCE, HIT,
- P4_PEBS_METRIC__none),
- [ C(RESULT_MISS) ] = P4_GEN_CACHE_EVENT(P4_EVENT_ITLB_REFERENCE, MISS,
- P4_PEBS_METRIC__none),
- },
- [ C(OP_WRITE) ] = {
- [ C(RESULT_ACCESS) ] = -1,
- [ C(RESULT_MISS) ] = -1,
- },
- [ C(OP_PREFETCH) ] = {
- [ C(RESULT_ACCESS) ] = -1,
- [ C(RESULT_MISS) ] = -1,
- },
- },
- [ C(NODE) ] = {
- [ C(OP_READ) ] = {
- [ C(RESULT_ACCESS) ] = -1,
- [ C(RESULT_MISS) ] = -1,
- },
- [ C(OP_WRITE) ] = {
- [ C(RESULT_ACCESS) ] = -1,
- [ C(RESULT_MISS) ] = -1,
- },
- [ C(OP_PREFETCH) ] = {
- [ C(RESULT_ACCESS) ] = -1,
- [ C(RESULT_MISS) ] = -1,
- },
- },
-};
-
-/*
- * Because of Netburst being quite restricted in how many
- * identical events may run simultaneously, we introduce event aliases,
- * ie the different events which have the same functionality but
- * utilize non-intersected resources (ESCR/CCCR/counter registers).
- *
- * This allow us to relax restrictions a bit and run two or more
- * identical events together.
- *
- * Never set any custom internal bits such as P4_CONFIG_HT,
- * P4_CONFIG_ALIASABLE or bits for P4_PEBS_METRIC, they are
- * either up to date automatically or not applicable at all.
- */
-struct p4_event_alias {
- u64 original;
- u64 alternative;
-} p4_event_aliases[] = {
- {
- /*
- * Non-halted cycles can be substituted with non-sleeping cycles (see
- * Intel SDM Vol3b for details). We need this alias to be able
- * to run nmi-watchdog and 'perf top' (or any other user space tool
- * which is interested in running PERF_COUNT_HW_CPU_CYCLES)
- * simultaneously.
- */
- .original =
- p4_config_pack_escr(P4_ESCR_EVENT(P4_EVENT_GLOBAL_POWER_EVENTS) |
- P4_ESCR_EMASK_BIT(P4_EVENT_GLOBAL_POWER_EVENTS, RUNNING)),
- .alternative =
- p4_config_pack_escr(P4_ESCR_EVENT(P4_EVENT_EXECUTION_EVENT) |
- P4_ESCR_EMASK_BIT(P4_EVENT_EXECUTION_EVENT, NBOGUS0)|
- P4_ESCR_EMASK_BIT(P4_EVENT_EXECUTION_EVENT, NBOGUS1)|
- P4_ESCR_EMASK_BIT(P4_EVENT_EXECUTION_EVENT, NBOGUS2)|
- P4_ESCR_EMASK_BIT(P4_EVENT_EXECUTION_EVENT, NBOGUS3)|
- P4_ESCR_EMASK_BIT(P4_EVENT_EXECUTION_EVENT, BOGUS0) |
- P4_ESCR_EMASK_BIT(P4_EVENT_EXECUTION_EVENT, BOGUS1) |
- P4_ESCR_EMASK_BIT(P4_EVENT_EXECUTION_EVENT, BOGUS2) |
- P4_ESCR_EMASK_BIT(P4_EVENT_EXECUTION_EVENT, BOGUS3))|
- p4_config_pack_cccr(P4_CCCR_THRESHOLD(15) | P4_CCCR_COMPLEMENT |
- P4_CCCR_COMPARE),
- },
-};
-
-static u64 p4_get_alias_event(u64 config)
-{
- u64 config_match;
- int i;
-
- /*
- * Only event with special mark is allowed,
- * we're to be sure it didn't come as malformed
- * RAW event.
- */
- if (!(config & P4_CONFIG_ALIASABLE))
- return 0;
-
- config_match = config & P4_CONFIG_EVENT_ALIAS_MASK;
-
- for (i = 0; i < ARRAY_SIZE(p4_event_aliases); i++) {
- if (config_match == p4_event_aliases[i].original) {
- config_match = p4_event_aliases[i].alternative;
- break;
- } else if (config_match == p4_event_aliases[i].alternative) {
- config_match = p4_event_aliases[i].original;
- break;
- }
- }
-
- if (i >= ARRAY_SIZE(p4_event_aliases))
- return 0;
-
- return config_match | (config & P4_CONFIG_EVENT_ALIAS_IMMUTABLE_BITS);
-}
-
-static u64 p4_general_events[PERF_COUNT_HW_MAX] = {
- /* non-halted CPU clocks */
- [PERF_COUNT_HW_CPU_CYCLES] =
- p4_config_pack_escr(P4_ESCR_EVENT(P4_EVENT_GLOBAL_POWER_EVENTS) |
- P4_ESCR_EMASK_BIT(P4_EVENT_GLOBAL_POWER_EVENTS, RUNNING)) |
- P4_CONFIG_ALIASABLE,
-
- /*
- * retired instructions
- * in a sake of simplicity we don't use the FSB tagging
- */
- [PERF_COUNT_HW_INSTRUCTIONS] =
- p4_config_pack_escr(P4_ESCR_EVENT(P4_EVENT_INSTR_RETIRED) |
- P4_ESCR_EMASK_BIT(P4_EVENT_INSTR_RETIRED, NBOGUSNTAG) |
- P4_ESCR_EMASK_BIT(P4_EVENT_INSTR_RETIRED, BOGUSNTAG)),
-
- /* cache hits */
- [PERF_COUNT_HW_CACHE_REFERENCES] =
- p4_config_pack_escr(P4_ESCR_EVENT(P4_EVENT_BSQ_CACHE_REFERENCE) |
- P4_ESCR_EMASK_BIT(P4_EVENT_BSQ_CACHE_REFERENCE, RD_2ndL_HITS) |
- P4_ESCR_EMASK_BIT(P4_EVENT_BSQ_CACHE_REFERENCE, RD_2ndL_HITE) |
- P4_ESCR_EMASK_BIT(P4_EVENT_BSQ_CACHE_REFERENCE, RD_2ndL_HITM) |
- P4_ESCR_EMASK_BIT(P4_EVENT_BSQ_CACHE_REFERENCE, RD_3rdL_HITS) |
- P4_ESCR_EMASK_BIT(P4_EVENT_BSQ_CACHE_REFERENCE, RD_3rdL_HITE) |
- P4_ESCR_EMASK_BIT(P4_EVENT_BSQ_CACHE_REFERENCE, RD_3rdL_HITM)),
-
- /* cache misses */
- [PERF_COUNT_HW_CACHE_MISSES] =
- p4_config_pack_escr(P4_ESCR_EVENT(P4_EVENT_BSQ_CACHE_REFERENCE) |
- P4_ESCR_EMASK_BIT(P4_EVENT_BSQ_CACHE_REFERENCE, RD_2ndL_MISS) |
- P4_ESCR_EMASK_BIT(P4_EVENT_BSQ_CACHE_REFERENCE, RD_3rdL_MISS) |
- P4_ESCR_EMASK_BIT(P4_EVENT_BSQ_CACHE_REFERENCE, WR_2ndL_MISS)),
-
- /* branch instructions retired */
- [PERF_COUNT_HW_BRANCH_INSTRUCTIONS] =
- p4_config_pack_escr(P4_ESCR_EVENT(P4_EVENT_RETIRED_BRANCH_TYPE) |
- P4_ESCR_EMASK_BIT(P4_EVENT_RETIRED_BRANCH_TYPE, CONDITIONAL) |
- P4_ESCR_EMASK_BIT(P4_EVENT_RETIRED_BRANCH_TYPE, CALL) |
- P4_ESCR_EMASK_BIT(P4_EVENT_RETIRED_BRANCH_TYPE, RETURN) |
- P4_ESCR_EMASK_BIT(P4_EVENT_RETIRED_BRANCH_TYPE, INDIRECT)),
-
- /* mispredicted branches retired */
- [PERF_COUNT_HW_BRANCH_MISSES] =
- p4_config_pack_escr(P4_ESCR_EVENT(P4_EVENT_MISPRED_BRANCH_RETIRED) |
- P4_ESCR_EMASK_BIT(P4_EVENT_MISPRED_BRANCH_RETIRED, NBOGUS)),
-
- /* bus ready clocks (cpu is driving #DRDY_DRV\#DRDY_OWN): */
- [PERF_COUNT_HW_BUS_CYCLES] =
- p4_config_pack_escr(P4_ESCR_EVENT(P4_EVENT_FSB_DATA_ACTIVITY) |
- P4_ESCR_EMASK_BIT(P4_EVENT_FSB_DATA_ACTIVITY, DRDY_DRV) |
- P4_ESCR_EMASK_BIT(P4_EVENT_FSB_DATA_ACTIVITY, DRDY_OWN)) |
- p4_config_pack_cccr(P4_CCCR_EDGE | P4_CCCR_COMPARE),
-};
-
-static struct p4_event_bind *p4_config_get_bind(u64 config)
-{
- unsigned int evnt = p4_config_unpack_event(config);
- struct p4_event_bind *bind = NULL;
-
- if (evnt < ARRAY_SIZE(p4_event_bind_map))
- bind = &p4_event_bind_map[evnt];
-
- return bind;
-}
-
-static u64 p4_pmu_event_map(int hw_event)
-{
- struct p4_event_bind *bind;
- unsigned int esel;
- u64 config;
-
- config = p4_general_events[hw_event];
- bind = p4_config_get_bind(config);
- esel = P4_OPCODE_ESEL(bind->opcode);
- config |= p4_config_pack_cccr(P4_CCCR_ESEL(esel));
-
- return config;
-}
-
-/* check cpu model specifics */
-static bool p4_event_match_cpu_model(unsigned int event_idx)
-{
- /* INSTR_COMPLETED event only exist for model 3, 4, 6 (Prescott) */
- if (event_idx == P4_EVENT_INSTR_COMPLETED) {
- if (boot_cpu_data.x86_model != 3 &&
- boot_cpu_data.x86_model != 4 &&
- boot_cpu_data.x86_model != 6)
- return false;
- }
-
- /*
- * For info
- * - IQ_ESCR0, IQ_ESCR1 only for models 1 and 2
- */
-
- return true;
-}
-
-static int p4_validate_raw_event(struct perf_event *event)
-{
- unsigned int v, emask;
-
- /* User data may have out-of-bound event index */
- v = p4_config_unpack_event(event->attr.config);
- if (v >= ARRAY_SIZE(p4_event_bind_map))
- return -EINVAL;
-
- /* It may be unsupported: */
- if (!p4_event_match_cpu_model(v))
- return -EINVAL;
-
- /*
- * NOTE: P4_CCCR_THREAD_ANY has not the same meaning as
- * in Architectural Performance Monitoring, it means not
- * on _which_ logical cpu to count but rather _when_, ie it
- * depends on logical cpu state -- count event if one cpu active,
- * none, both or any, so we just allow user to pass any value
- * desired.
- *
- * In turn we always set Tx_OS/Tx_USR bits bound to logical
- * cpu without their propagation to another cpu
- */
-
- /*
- * if an event is shared across the logical threads
- * the user needs special permissions to be able to use it
- */
- if (p4_ht_active() && p4_event_bind_map[v].shared) {
- if (perf_paranoid_cpu() && !capable(CAP_SYS_ADMIN))
- return -EACCES;
- }
-
- /* ESCR EventMask bits may be invalid */
- emask = p4_config_unpack_escr(event->attr.config) & P4_ESCR_EVENTMASK_MASK;
- if (emask & ~p4_event_bind_map[v].escr_emask)
- return -EINVAL;
-
- /*
- * it may have some invalid PEBS bits
- */
- if (p4_config_pebs_has(event->attr.config, P4_PEBS_CONFIG_ENABLE))
- return -EINVAL;
-
- v = p4_config_unpack_metric(event->attr.config);
- if (v >= ARRAY_SIZE(p4_pebs_bind_map))
- return -EINVAL;
-
- return 0;
-}
-
-static int p4_hw_config(struct perf_event *event)
-{
- int cpu = get_cpu();
- int rc = 0;
- u32 escr, cccr;
-
- /*
- * the reason we use cpu that early is that: if we get scheduled
- * first time on the same cpu -- we will not need swap thread
- * specific flags in config (and will save some cpu cycles)
- */
-
- cccr = p4_default_cccr_conf(cpu);
- escr = p4_default_escr_conf(cpu, event->attr.exclude_kernel,
- event->attr.exclude_user);
- event->hw.config = p4_config_pack_escr(escr) |
- p4_config_pack_cccr(cccr);
-
- if (p4_ht_active() && p4_ht_thread(cpu))
- event->hw.config = p4_set_ht_bit(event->hw.config);
-
- if (event->attr.type == PERF_TYPE_RAW) {
- struct p4_event_bind *bind;
- unsigned int esel;
- /*
- * Clear bits we reserve to be managed by kernel itself
- * and never allowed from a user space
- */
- event->attr.config &= P4_CONFIG_MASK;
-
- rc = p4_validate_raw_event(event);
- if (rc)
- goto out;
-
- /*
- * Note that for RAW events we allow user to use P4_CCCR_RESERVED
- * bits since we keep additional info here (for cache events and etc)
- */
- event->hw.config |= event->attr.config;
- bind = p4_config_get_bind(event->attr.config);
- if (!bind) {
- rc = -EINVAL;
- goto out;
- }
- esel = P4_OPCODE_ESEL(bind->opcode);
- event->hw.config |= p4_config_pack_cccr(P4_CCCR_ESEL(esel));
- }
-
- rc = x86_setup_perfctr(event);
-out:
- put_cpu();
- return rc;
-}
-
-static inline int p4_pmu_clear_cccr_ovf(struct hw_perf_event *hwc)
-{
- u64 v;
-
- /* an official way for overflow indication */
- rdmsrl(hwc->config_base, v);
- if (v & P4_CCCR_OVF) {
- wrmsrl(hwc->config_base, v & ~P4_CCCR_OVF);
- return 1;
- }
-
- /*
- * In some circumstances the overflow might issue an NMI but did
- * not set P4_CCCR_OVF bit. Because a counter holds a negative value
- * we simply check for high bit being set, if it's cleared it means
- * the counter has reached zero value and continued counting before
- * real NMI signal was received:
- */
- rdmsrl(hwc->event_base, v);
- if (!(v & ARCH_P4_UNFLAGGED_BIT))
- return 1;
-
- return 0;
-}
-
-static void p4_pmu_disable_pebs(void)
-{
- /*
- * FIXME
- *
- * It's still allowed that two threads setup same cache
- * events so we can't simply clear metrics until we knew
- * no one is depending on us, so we need kind of counter
- * for "ReplayEvent" users.
- *
- * What is more complex -- RAW events, if user (for some
- * reason) will pass some cache event metric with improper
- * event opcode -- it's fine from hardware point of view
- * but completely nonsense from "meaning" of such action.
- *
- * So at moment let leave metrics turned on forever -- it's
- * ok for now but need to be revisited!
- *
- * (void)wrmsrl_safe(MSR_IA32_PEBS_ENABLE, 0);
- * (void)wrmsrl_safe(MSR_P4_PEBS_MATRIX_VERT, 0);
- */
-}
-
-static inline void p4_pmu_disable_event(struct perf_event *event)
-{
- struct hw_perf_event *hwc = &event->hw;
-
- /*
- * If event gets disabled while counter is in overflowed
- * state we need to clear P4_CCCR_OVF, otherwise interrupt get
- * asserted again and again
- */
- (void)wrmsrl_safe(hwc->config_base,
- p4_config_unpack_cccr(hwc->config) & ~P4_CCCR_ENABLE & ~P4_CCCR_OVF & ~P4_CCCR_RESERVED);
-}
-
-static void p4_pmu_disable_all(void)
-{
- struct cpu_hw_events *cpuc = this_cpu_ptr(&cpu_hw_events);
- int idx;
-
- for (idx = 0; idx < x86_pmu.num_counters; idx++) {
- struct perf_event *event = cpuc->events[idx];
- if (!test_bit(idx, cpuc->active_mask))
- continue;
- p4_pmu_disable_event(event);
- }
-
- p4_pmu_disable_pebs();
-}
-
-/* configuration must be valid */
-static void p4_pmu_enable_pebs(u64 config)
-{
- struct p4_pebs_bind *bind;
- unsigned int idx;
-
- BUILD_BUG_ON(P4_PEBS_METRIC__max > P4_PEBS_CONFIG_METRIC_MASK);
-
- idx = p4_config_unpack_metric(config);
- if (idx == P4_PEBS_METRIC__none)
- return;
-
- bind = &p4_pebs_bind_map[idx];
-
- (void)wrmsrl_safe(MSR_IA32_PEBS_ENABLE, (u64)bind->metric_pebs);
- (void)wrmsrl_safe(MSR_P4_PEBS_MATRIX_VERT, (u64)bind->metric_vert);
-}
-
-static void p4_pmu_enable_event(struct perf_event *event)
-{
- struct hw_perf_event *hwc = &event->hw;
- int thread = p4_ht_config_thread(hwc->config);
- u64 escr_conf = p4_config_unpack_escr(p4_clear_ht_bit(hwc->config));
- unsigned int idx = p4_config_unpack_event(hwc->config);
- struct p4_event_bind *bind;
- u64 escr_addr, cccr;
-
- bind = &p4_event_bind_map[idx];
- escr_addr = bind->escr_msr[thread];
-
- /*
- * - we dont support cascaded counters yet
- * - and counter 1 is broken (erratum)
- */
- WARN_ON_ONCE(p4_is_event_cascaded(hwc->config));
- WARN_ON_ONCE(hwc->idx == 1);
-
- /* we need a real Event value */
- escr_conf &= ~P4_ESCR_EVENT_MASK;
- escr_conf |= P4_ESCR_EVENT(P4_OPCODE_EVNT(bind->opcode));
-
- cccr = p4_config_unpack_cccr(hwc->config);
-
- /*
- * it could be Cache event so we need to write metrics
- * into additional MSRs
- */
- p4_pmu_enable_pebs(hwc->config);
-
- (void)wrmsrl_safe(escr_addr, escr_conf);
- (void)wrmsrl_safe(hwc->config_base,
- (cccr & ~P4_CCCR_RESERVED) | P4_CCCR_ENABLE);
-}
-
-static void p4_pmu_enable_all(int added)
-{
- struct cpu_hw_events *cpuc = this_cpu_ptr(&cpu_hw_events);
- int idx;
-
- for (idx = 0; idx < x86_pmu.num_counters; idx++) {
- struct perf_event *event = cpuc->events[idx];
- if (!test_bit(idx, cpuc->active_mask))
- continue;
- p4_pmu_enable_event(event);
- }
-}
-
-static int p4_pmu_handle_irq(struct pt_regs *regs)
-{
- struct perf_sample_data data;
- struct cpu_hw_events *cpuc;
- struct perf_event *event;
- struct hw_perf_event *hwc;
- int idx, handled = 0;
- u64 val;
-
- cpuc = this_cpu_ptr(&cpu_hw_events);
-
- for (idx = 0; idx < x86_pmu.num_counters; idx++) {
- int overflow;
-
- if (!test_bit(idx, cpuc->active_mask)) {
- /* catch in-flight IRQs */
- if (__test_and_clear_bit(idx, cpuc->running))
- handled++;
- continue;
- }
-
- event = cpuc->events[idx];
- hwc = &event->hw;
-
- WARN_ON_ONCE(hwc->idx != idx);
-
- /* it might be unflagged overflow */
- overflow = p4_pmu_clear_cccr_ovf(hwc);
-
- val = x86_perf_event_update(event);
- if (!overflow && (val & (1ULL << (x86_pmu.cntval_bits - 1))))
- continue;
-
- handled += overflow;
-
- /* event overflow for sure */
- perf_sample_data_init(&data, 0, hwc->last_period);
-
- if (!x86_perf_event_set_period(event))
- continue;
-
-
- if (perf_event_overflow(event, &data, regs))
- x86_pmu_stop(event, 0);
- }
-
- if (handled)
- inc_irq_stat(apic_perf_irqs);
-
- /*
- * When dealing with the unmasking of the LVTPC on P4 perf hw, it has
- * been observed that the OVF bit flag has to be cleared first _before_
- * the LVTPC can be unmasked.
- *
- * The reason is the NMI line will continue to be asserted while the OVF
- * bit is set. This causes a second NMI to generate if the LVTPC is
- * unmasked before the OVF bit is cleared, leading to unknown NMI
- * messages.
- */
- apic_write(APIC_LVTPC, APIC_DM_NMI);
-
- return handled;
-}
-
-/*
- * swap thread specific fields according to a thread
- * we are going to run on
- */
-static void p4_pmu_swap_config_ts(struct hw_perf_event *hwc, int cpu)
-{
- u32 escr, cccr;
-
- /*
- * we either lucky and continue on same cpu or no HT support
- */
- if (!p4_should_swap_ts(hwc->config, cpu))
- return;
-
- /*
- * the event is migrated from an another logical
- * cpu, so we need to swap thread specific flags
- */
-
- escr = p4_config_unpack_escr(hwc->config);
- cccr = p4_config_unpack_cccr(hwc->config);
-
- if (p4_ht_thread(cpu)) {
- cccr &= ~P4_CCCR_OVF_PMI_T0;
- cccr |= P4_CCCR_OVF_PMI_T1;
- if (escr & P4_ESCR_T0_OS) {
- escr &= ~P4_ESCR_T0_OS;
- escr |= P4_ESCR_T1_OS;
- }
- if (escr & P4_ESCR_T0_USR) {
- escr &= ~P4_ESCR_T0_USR;
- escr |= P4_ESCR_T1_USR;
- }
- hwc->config = p4_config_pack_escr(escr);
- hwc->config |= p4_config_pack_cccr(cccr);
- hwc->config |= P4_CONFIG_HT;
- } else {
- cccr &= ~P4_CCCR_OVF_PMI_T1;
- cccr |= P4_CCCR_OVF_PMI_T0;
- if (escr & P4_ESCR_T1_OS) {
- escr &= ~P4_ESCR_T1_OS;
- escr |= P4_ESCR_T0_OS;
- }
- if (escr & P4_ESCR_T1_USR) {
- escr &= ~P4_ESCR_T1_USR;
- escr |= P4_ESCR_T0_USR;
- }
- hwc->config = p4_config_pack_escr(escr);
- hwc->config |= p4_config_pack_cccr(cccr);
- hwc->config &= ~P4_CONFIG_HT;
- }
-}
-
-/*
- * ESCR address hashing is tricky, ESCRs are not sequential
- * in memory but all starts from MSR_P4_BSU_ESCR0 (0x03a0) and
- * the metric between any ESCRs is laid in range [0xa0,0xe1]
- *
- * so we make ~70% filled hashtable
- */
-
-#define P4_ESCR_MSR_BASE 0x000003a0
-#define P4_ESCR_MSR_MAX 0x000003e1
-#define P4_ESCR_MSR_TABLE_SIZE (P4_ESCR_MSR_MAX - P4_ESCR_MSR_BASE + 1)
-#define P4_ESCR_MSR_IDX(msr) (msr - P4_ESCR_MSR_BASE)
-#define P4_ESCR_MSR_TABLE_ENTRY(msr) [P4_ESCR_MSR_IDX(msr)] = msr
-
-static const unsigned int p4_escr_table[P4_ESCR_MSR_TABLE_SIZE] = {
- P4_ESCR_MSR_TABLE_ENTRY(MSR_P4_ALF_ESCR0),
- P4_ESCR_MSR_TABLE_ENTRY(MSR_P4_ALF_ESCR1),
- P4_ESCR_MSR_TABLE_ENTRY(MSR_P4_BPU_ESCR0),
- P4_ESCR_MSR_TABLE_ENTRY(MSR_P4_BPU_ESCR1),
- P4_ESCR_MSR_TABLE_ENTRY(MSR_P4_BSU_ESCR0),
- P4_ESCR_MSR_TABLE_ENTRY(MSR_P4_BSU_ESCR1),
- P4_ESCR_MSR_TABLE_ENTRY(MSR_P4_CRU_ESCR0),
- P4_ESCR_MSR_TABLE_ENTRY(MSR_P4_CRU_ESCR1),
- P4_ESCR_MSR_TABLE_ENTRY(MSR_P4_CRU_ESCR2),
- P4_ESCR_MSR_TABLE_ENTRY(MSR_P4_CRU_ESCR3),
- P4_ESCR_MSR_TABLE_ENTRY(MSR_P4_CRU_ESCR4),
- P4_ESCR_MSR_TABLE_ENTRY(MSR_P4_CRU_ESCR5),
- P4_ESCR_MSR_TABLE_ENTRY(MSR_P4_DAC_ESCR0),
- P4_ESCR_MSR_TABLE_ENTRY(MSR_P4_DAC_ESCR1),
- P4_ESCR_MSR_TABLE_ENTRY(MSR_P4_FIRM_ESCR0),
- P4_ESCR_MSR_TABLE_ENTRY(MSR_P4_FIRM_ESCR1),
- P4_ESCR_MSR_TABLE_ENTRY(MSR_P4_FLAME_ESCR0),
- P4_ESCR_MSR_TABLE_ENTRY(MSR_P4_FLAME_ESCR1),
- P4_ESCR_MSR_TABLE_ENTRY(MSR_P4_FSB_ESCR0),
- P4_ESCR_MSR_TABLE_ENTRY(MSR_P4_FSB_ESCR1),
- P4_ESCR_MSR_TABLE_ENTRY(MSR_P4_IQ_ESCR0),
- P4_ESCR_MSR_TABLE_ENTRY(MSR_P4_IQ_ESCR1),
- P4_ESCR_MSR_TABLE_ENTRY(MSR_P4_IS_ESCR0),
- P4_ESCR_MSR_TABLE_ENTRY(MSR_P4_IS_ESCR1),
- P4_ESCR_MSR_TABLE_ENTRY(MSR_P4_ITLB_ESCR0),
- P4_ESCR_MSR_TABLE_ENTRY(MSR_P4_ITLB_ESCR1),
- P4_ESCR_MSR_TABLE_ENTRY(MSR_P4_IX_ESCR0),
- P4_ESCR_MSR_TABLE_ENTRY(MSR_P4_IX_ESCR1),
- P4_ESCR_MSR_TABLE_ENTRY(MSR_P4_MOB_ESCR0),
- P4_ESCR_MSR_TABLE_ENTRY(MSR_P4_MOB_ESCR1),
- P4_ESCR_MSR_TABLE_ENTRY(MSR_P4_MS_ESCR0),
- P4_ESCR_MSR_TABLE_ENTRY(MSR_P4_MS_ESCR1),
- P4_ESCR_MSR_TABLE_ENTRY(MSR_P4_PMH_ESCR0),
- P4_ESCR_MSR_TABLE_ENTRY(MSR_P4_PMH_ESCR1),
- P4_ESCR_MSR_TABLE_ENTRY(MSR_P4_RAT_ESCR0),
- P4_ESCR_MSR_TABLE_ENTRY(MSR_P4_RAT_ESCR1),
- P4_ESCR_MSR_TABLE_ENTRY(MSR_P4_SAAT_ESCR0),
- P4_ESCR_MSR_TABLE_ENTRY(MSR_P4_SAAT_ESCR1),
- P4_ESCR_MSR_TABLE_ENTRY(MSR_P4_SSU_ESCR0),
- P4_ESCR_MSR_TABLE_ENTRY(MSR_P4_SSU_ESCR1),
- P4_ESCR_MSR_TABLE_ENTRY(MSR_P4_TBPU_ESCR0),
- P4_ESCR_MSR_TABLE_ENTRY(MSR_P4_TBPU_ESCR1),
- P4_ESCR_MSR_TABLE_ENTRY(MSR_P4_TC_ESCR0),
- P4_ESCR_MSR_TABLE_ENTRY(MSR_P4_TC_ESCR1),
- P4_ESCR_MSR_TABLE_ENTRY(MSR_P4_U2L_ESCR0),
- P4_ESCR_MSR_TABLE_ENTRY(MSR_P4_U2L_ESCR1),
-};
-
-static int p4_get_escr_idx(unsigned int addr)
-{
- unsigned int idx = P4_ESCR_MSR_IDX(addr);
-
- if (unlikely(idx >= P4_ESCR_MSR_TABLE_SIZE ||
- !p4_escr_table[idx] ||
- p4_escr_table[idx] != addr)) {
- WARN_ONCE(1, "P4 PMU: Wrong address passed: %x\n", addr);
- return -1;
- }
-
- return idx;
-}
-
-static int p4_next_cntr(int thread, unsigned long *used_mask,
- struct p4_event_bind *bind)
-{
- int i, j;
-
- for (i = 0; i < P4_CNTR_LIMIT; i++) {
- j = bind->cntr[thread][i];
- if (j != -1 && !test_bit(j, used_mask))
- return j;
- }
-
- return -1;
-}
-
-static int p4_pmu_schedule_events(struct cpu_hw_events *cpuc, int n, int *assign)
-{
- unsigned long used_mask[BITS_TO_LONGS(X86_PMC_IDX_MAX)];
- unsigned long escr_mask[BITS_TO_LONGS(P4_ESCR_MSR_TABLE_SIZE)];
- int cpu = smp_processor_id();
- struct hw_perf_event *hwc;
- struct p4_event_bind *bind;
- unsigned int i, thread, num;
- int cntr_idx, escr_idx;
- u64 config_alias;
- int pass;
-
- bitmap_zero(used_mask, X86_PMC_IDX_MAX);
- bitmap_zero(escr_mask, P4_ESCR_MSR_TABLE_SIZE);
-
- for (i = 0, num = n; i < n; i++, num--) {
-
- hwc = &cpuc->event_list[i]->hw;
- thread = p4_ht_thread(cpu);
- pass = 0;
-
-again:
- /*
- * It's possible to hit a circular lock
- * between original and alternative events
- * if both are scheduled already.
- */
- if (pass > 2)
- goto done;
-
- bind = p4_config_get_bind(hwc->config);
- escr_idx = p4_get_escr_idx(bind->escr_msr[thread]);
- if (unlikely(escr_idx == -1))
- goto done;
-
- if (hwc->idx != -1 && !p4_should_swap_ts(hwc->config, cpu)) {
- cntr_idx = hwc->idx;
- if (assign)
- assign[i] = hwc->idx;
- goto reserve;
- }
-
- cntr_idx = p4_next_cntr(thread, used_mask, bind);
- if (cntr_idx == -1 || test_bit(escr_idx, escr_mask)) {
- /*
- * Check whether an event alias is still available.
- */
- config_alias = p4_get_alias_event(hwc->config);
- if (!config_alias)
- goto done;
- hwc->config = config_alias;
- pass++;
- goto again;
- }
- /*
- * Perf does test runs to see if a whole group can be assigned
- * together succesfully. There can be multiple rounds of this.
- * Unfortunately, p4_pmu_swap_config_ts touches the hwc->config
- * bits, such that the next round of group assignments will
- * cause the above p4_should_swap_ts to pass instead of fail.
- * This leads to counters exclusive to thread0 being used by
- * thread1.
- *
- * Solve this with a cheap hack, reset the idx back to -1 to
- * force a new lookup (p4_next_cntr) to get the right counter
- * for the right thread.
- *
- * This probably doesn't comply with the general spirit of how
- * perf wants to work, but P4 is special. :-(
- */
- if (p4_should_swap_ts(hwc->config, cpu))
- hwc->idx = -1;
- p4_pmu_swap_config_ts(hwc, cpu);
- if (assign)
- assign[i] = cntr_idx;
-reserve:
- set_bit(cntr_idx, used_mask);
- set_bit(escr_idx, escr_mask);
- }
-
-done:
- return num ? -EINVAL : 0;
-}
-
-PMU_FORMAT_ATTR(cccr, "config:0-31" );
-PMU_FORMAT_ATTR(escr, "config:32-62");
-PMU_FORMAT_ATTR(ht, "config:63" );
-
-static struct attribute *intel_p4_formats_attr[] = {
- &format_attr_cccr.attr,
- &format_attr_escr.attr,
- &format_attr_ht.attr,
- NULL,
-};
-
-static __initconst const struct x86_pmu p4_pmu = {
- .name = "Netburst P4/Xeon",
- .handle_irq = p4_pmu_handle_irq,
- .disable_all = p4_pmu_disable_all,
- .enable_all = p4_pmu_enable_all,
- .enable = p4_pmu_enable_event,
- .disable = p4_pmu_disable_event,
- .eventsel = MSR_P4_BPU_CCCR0,
- .perfctr = MSR_P4_BPU_PERFCTR0,
- .event_map = p4_pmu_event_map,
- .max_events = ARRAY_SIZE(p4_general_events),
- .get_event_constraints = x86_get_event_constraints,
- /*
- * IF HT disabled we may need to use all
- * ARCH_P4_MAX_CCCR counters simulaneously
- * though leave it restricted at moment assuming
- * HT is on
- */
- .num_counters = ARCH_P4_MAX_CCCR,
- .apic = 1,
- .cntval_bits = ARCH_P4_CNTRVAL_BITS,
- .cntval_mask = ARCH_P4_CNTRVAL_MASK,
- .max_period = (1ULL << (ARCH_P4_CNTRVAL_BITS - 1)) - 1,
- .hw_config = p4_hw_config,
- .schedule_events = p4_pmu_schedule_events,
- /*
- * This handles erratum N15 in intel doc 249199-029,
- * the counter may not be updated correctly on write
- * so we need a second write operation to do the trick
- * (the official workaround didn't work)
- *
- * the former idea is taken from OProfile code
- */
- .perfctr_second_write = 1,
-
- .format_attrs = intel_p4_formats_attr,
-};
-
-__init int p4_pmu_init(void)
-{
- unsigned int low, high;
- int i, reg;
-
- /* If we get stripped -- indexing fails */
- BUILD_BUG_ON(ARCH_P4_MAX_CCCR > INTEL_PMC_MAX_GENERIC);
-
- rdmsr(MSR_IA32_MISC_ENABLE, low, high);
- if (!(low & (1 << 7))) {
- pr_cont("unsupported Netburst CPU model %d ",
- boot_cpu_data.x86_model);
- return -ENODEV;
- }
-
- memcpy(hw_cache_event_ids, p4_hw_cache_event_ids,
- sizeof(hw_cache_event_ids));
-
- pr_cont("Netburst events, ");
-
- x86_pmu = p4_pmu;
-
- /*
- * Even though the counters are configured to interrupt a particular
- * logical processor when an overflow happens, testing has shown that
- * on kdump kernels (which uses a single cpu), thread1's counter
- * continues to run and will report an NMI on thread0. Due to the
- * overflow bug, this leads to a stream of unknown NMIs.
- *
- * Solve this by zero'ing out the registers to mimic a reset.
- */
- for (i = 0; i < x86_pmu.num_counters; i++) {
- reg = x86_pmu_config_addr(i);
- wrmsrl_safe(reg, 0ULL);
- }
-
- return 0;
-}
projects / GitHub / MotorolaMobilityLLC / kernel-slsi.git / commitdiff