| /* |
| * Netburst Perfomance 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 |
| */ |
| |
| #ifdef CONFIG_CPU_SUP_INTEL |
| |
| #include <asm/perf_event_p4.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 */ |
| 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 }, |
| .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 }, |
| .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 }, |
| .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 }, |
| .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 }, |
| .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 }, |
| .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 }, |
| .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 }, |
| .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 }, |
| .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 }, |
| .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 }, |
| .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 }, |
| .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 }, |
| .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 }, |
| .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 }, |
| .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 }, |
| .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 }, |
| .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 }, |
| .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 }, |
| .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 }, |
| .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 }, |
| .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 }, |
| .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 }, |
| .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 }, |
| .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 }, |
| .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 }, |
| .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 }, |
| .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 }, |
| .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 }, |
| .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 }, |
| .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 }, |
| .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 }, |
| .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 }, |
| .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 }, |
| .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 }, |
| .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 }, |
| .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 }, |
| .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 }, |
| .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 }, |
| .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 }, |
| .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 }, |
| .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 }, |
| .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 }, |
| .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 }, |
| .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 }, |
| .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 }, |
| .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, |
| }, |
| }, |
| }; |
| |
| 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)), |
| |
| /* |
| * 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; |
| } |
| |
| static int p4_validate_raw_event(struct perf_event *event) |
| { |
| unsigned int v; |
| |
| /* 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)) { |
| pr_warning("P4 PMU: Unknown event code: %d\n", v); |
| return -EINVAL; |
| } |
| |
| /* |
| * it may have some screwed PEBS bits |
| */ |
| if (p4_config_pebs_has(event->attr.config, P4_PEBS_CONFIG_ENABLE)) { |
| pr_warning("P4 PMU: PEBS are not supported yet\n"); |
| return -EINVAL; |
| } |
| v = p4_config_unpack_metric(event->attr.config); |
| if (v >= ARRAY_SIZE(p4_pebs_bind_map)) { |
| pr_warning("P4 PMU: Unknown metric code: %d\n", v); |
| 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) { |
| |
| rc = p4_validate_raw_event(event); |
| if (rc) |
| goto out; |
| |
| /* |
| * We don't control raw events so it's up to the caller |
| * to pass sane values (and we don't count the thread number |
| * on HT machine but allow HT-compatible specifics to be |
| * passed on) |
| * |
| * 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) |
| * |
| * XXX: HT wide things should check perf_paranoid_cpu() && |
| * CAP_SYS_ADMIN |
| */ |
| event->hw.config |= event->attr.config & |
| (p4_config_pack_escr(P4_ESCR_MASK_HT) | |
| p4_config_pack_cccr(P4_CCCR_MASK_HT | P4_CCCR_RESERVED)); |
| |
| event->hw.config &= ~P4_CCCR_FORCE_OVF; |
| } |
| |
| rc = x86_setup_perfctr(event); |
| out: |
| put_cpu(); |
| return rc; |
| } |
| |
| static inline int p4_pmu_clear_cccr_ovf(struct hw_perf_event *hwc) |
| { |
| int overflow = 0; |
| u32 low, high; |
| |
| rdmsr(hwc->config_base + hwc->idx, low, high); |
| |
| /* we need to check high bit for unflagged overflows */ |
| if ((low & P4_CCCR_OVF) || !(high & (1 << 31))) { |
| overflow = 1; |
| (void)checking_wrmsrl(hwc->config_base + hwc->idx, |
| ((u64)low) & ~P4_CCCR_OVF); |
| } |
| |
| return overflow; |
| } |
| |
| 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 |
| * noone 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 nonsence 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)checking_wrmsrl(MSR_IA32_PEBS_ENABLE, (u64)0); |
| * (void)checking_wrmsrl(MSR_P4_PEBS_MATRIX_VERT, (u64)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)checking_wrmsrl(hwc->config_base + hwc->idx, |
| (u64)(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 = &__get_cpu_var(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)checking_wrmsrl(MSR_IA32_PEBS_ENABLE, (u64)bind->metric_pebs); |
| (void)checking_wrmsrl(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 = (u64)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)checking_wrmsrl(escr_addr, escr_conf); |
| (void)checking_wrmsrl(hwc->config_base + hwc->idx, |
| (cccr & ~P4_CCCR_RESERVED) | P4_CCCR_ENABLE); |
| } |
| |
| static void p4_pmu_enable_all(int added) |
| { |
| struct cpu_hw_events *cpuc = &__get_cpu_var(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; |
| |
| data.addr = 0; |
| data.raw = NULL; |
| |
| cpuc = &__get_cpu_var(cpu_hw_events); |
| |
| for (idx = 0; idx < x86_pmu.num_counters; idx++) { |
| int overflow; |
| |
| if (!test_bit(idx, cpuc->active_mask)) |
| 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 */ |
| data.period = event->hw.last_period; |
| |
| if (!x86_perf_event_set_period(event)) |
| continue; |
| if (perf_event_overflow(event, 1, &data, regs)) |
| p4_pmu_disable_event(event); |
| } |
| |
| if (handled) { |
| /* p4 quirk: unmask it again */ |
| apic_write(APIC_LVTPC, apic_read(APIC_LVTPC) & ~APIC_LVT_MASKED); |
| inc_irq_stat(apic_perf_irqs); |
| } |
| |
| 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; |
| |
| 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); |
| 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)) |
| goto done; |
| |
| 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 ? -ENOSPC : 0; |
| } |
| |
| 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 = 40, |
| .cntval_mask = (1ULL << 40) - 1, |
| .max_period = (1ULL << 39) - 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, |
| }; |
| |
| static __init int p4_pmu_init(void) |
| { |
| unsigned int low, high; |
| |
| /* If we get stripped -- indexig fails */ |
| BUILD_BUG_ON(ARCH_P4_MAX_CCCR > X86_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; |
| |
| return 0; |
| } |
| |
| #endif /* CONFIG_CPU_SUP_INTEL */ |
