Commit 452a339a authored by Peter Zijlstra's avatar Peter Zijlstra Committed by Ingo Molnar
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perf_events, x86: Implement Intel Westmere support 



The new Intel documentation includes Westmere arch specific
event maps that are significantly different from the Nehalem
ones. Add support for this generation.

Found the CPUID model numbers on wikipedia.

Also ammend some Nehalem constraints, spotted those when looking
for the differences between Nehalem and Westmere.

Signed-off-by: default avatarPeter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Arjan van de Ven <arjan@linux.intel.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Stephane Eranian <eranian@google.com>
LKML-Reference: <20100127221122.151865645@chello.nl>
Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
parent 1a6e21f7

arch/x86/kernel/cpu/perf_event.c

+117 −7
Original line number Diff line number Diff line
@@ -244,18 +244,26 @@ static struct event_constraint intel_core_event_constraints[] = 


static struct event_constraint intel_nehalem_event_constraints[] =

{

	FIXED_EVENT_CONSTRAINT(0xc0, (0x3|(1ULL<<32))), /* INSTRUCTIONS_RETIRED */

	FIXED_EVENT_CONSTRAINT(0x3c, (0x3|(1ULL<<33))), /* UNHALTED_CORE_CYCLES */

	FIXED_EVENT_CONSTRAINT(0xc0, (0xf|(1ULL<<32))), /* INSTRUCTIONS_RETIRED */

	FIXED_EVENT_CONSTRAINT(0x3c, (0xf|(1ULL<<33))), /* UNHALTED_CORE_CYCLES */

	INTEL_EVENT_CONSTRAINT(0x40, 0x3), /* L1D_CACHE_LD */

	INTEL_EVENT_CONSTRAINT(0x41, 0x3), /* L1D_CACHE_ST */

	INTEL_EVENT_CONSTRAINT(0x42, 0x3), /* L1D_CACHE_LOCK */

	INTEL_EVENT_CONSTRAINT(0x43, 0x3), /* L1D_ALL_REF */

	INTEL_EVENT_CONSTRAINT(0x48, 0x3), /* L1D_PEND_MISS */

	INTEL_EVENT_CONSTRAINT(0x4e, 0x3), /* L1D_PREFETCH */

	INTEL_EVENT_CONSTRAINT(0x4c, 0x3), /* LOAD_HIT_PRE */

	INTEL_EVENT_CONSTRAINT(0x51, 0x3), /* L1D */

	INTEL_EVENT_CONSTRAINT(0x52, 0x3), /* L1D_CACHE_PREFETCH_LOCK_FB_HIT */

	INTEL_EVENT_CONSTRAINT(0x53, 0x3), /* L1D_CACHE_LOCK_FB_HIT */

	INTEL_EVENT_CONSTRAINT(0xc5, 0x3), /* CACHE_LOCK_CYCLES */

	INTEL_EVENT_CONSTRAINT(0x63, 0x3), /* CACHE_LOCK_CYCLES */

	EVENT_CONSTRAINT_END

};



static struct event_constraint intel_westmere_event_constraints[] =

{

	FIXED_EVENT_CONSTRAINT(0xc0, (0xf|(1ULL<<32))), /* INSTRUCTIONS_RETIRED */

	FIXED_EVENT_CONSTRAINT(0x3c, (0xf|(1ULL<<33))), /* UNHALTED_CORE_CYCLES */

	INTEL_EVENT_CONSTRAINT(0x51, 0x3), /* L1D */

	INTEL_EVENT_CONSTRAINT(0x60, 0x1), /* OFFCORE_REQUESTS_OUTSTANDING */

	INTEL_EVENT_CONSTRAINT(0x63, 0x3), /* CACHE_LOCK_CYCLES */

	EVENT_CONSTRAINT_END

};
@@ -286,6 +294,97 @@ static u64 __read_mostly hw_cache_event_ids 
				[PERF_COUNT_HW_CACHE_OP_MAX]

				[PERF_COUNT_HW_CACHE_RESULT_MAX];



static __initconst u64 westmere_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) ] = 0x010b, /* MEM_INST_RETIRED.LOADS       */

		[ C(RESULT_MISS)   ] = 0x0151, /* L1D.REPL                     */

	},

	[ C(OP_WRITE) ] = {

		[ C(RESULT_ACCESS) ] = 0x020b, /* MEM_INST_RETURED.STORES      */

		[ C(RESULT_MISS)   ] = 0x0251, /* L1D.M_REPL                   */

	},

	[ C(OP_PREFETCH) ] = {

		[ C(RESULT_ACCESS) ] = 0x014e, /* L1D_PREFETCH.REQUESTS        */

		[ C(RESULT_MISS)   ] = 0x024e, /* L1D_PREFETCH.MISS            */

	},

 },

 [ C(L1I ) ] = {

	[ C(OP_READ) ] = {

		[ C(RESULT_ACCESS) ] = 0x0380, /* L1I.READS                    */

		[ C(RESULT_MISS)   ] = 0x0280, /* L1I.MISSES                   */

	},

	[ C(OP_WRITE) ] = {

		[ C(RESULT_ACCESS) ] = -1,

		[ C(RESULT_MISS)   ] = -1,

	},

	[ C(OP_PREFETCH) ] = {

		[ C(RESULT_ACCESS) ] = 0x0,

		[ C(RESULT_MISS)   ] = 0x0,

	},

 },

 [ C(LL  ) ] = {

	[ C(OP_READ) ] = {

		[ C(RESULT_ACCESS) ] = 0x0324, /* L2_RQSTS.LOADS               */

		[ C(RESULT_MISS)   ] = 0x0224, /* L2_RQSTS.LD_MISS             */

	},

	[ C(OP_WRITE) ] = {

		[ C(RESULT_ACCESS) ] = 0x0c24, /* L2_RQSTS.RFOS                */

		[ C(RESULT_MISS)   ] = 0x0824, /* L2_RQSTS.RFO_MISS            */

	},

	[ C(OP_PREFETCH) ] = {

		[ C(RESULT_ACCESS) ] = 0x4f2e, /* LLC Reference                */

		[ C(RESULT_MISS)   ] = 0x412e, /* LLC Misses                   */

	},

 },

 [ C(DTLB) ] = {

	[ C(OP_READ) ] = {

		[ C(RESULT_ACCESS) ] = 0x010b, /* MEM_INST_RETIRED.LOADS       */

		[ C(RESULT_MISS)   ] = 0x0108, /* DTLB_LOAD_MISSES.ANY         */

	},

	[ C(OP_WRITE) ] = {

		[ C(RESULT_ACCESS) ] = 0x020b, /* MEM_INST_RETURED.STORES      */

		[ C(RESULT_MISS)   ] = 0x010c, /* MEM_STORE_RETIRED.DTLB_MISS  */

	},

	[ C(OP_PREFETCH) ] = {

		[ C(RESULT_ACCESS) ] = 0x0,

		[ C(RESULT_MISS)   ] = 0x0,

	},

 },

 [ C(ITLB) ] = {

	[ C(OP_READ) ] = {

		[ C(RESULT_ACCESS) ] = 0x01c0, /* INST_RETIRED.ANY_P           */

		[ C(RESULT_MISS)   ] = 0x0185, /* ITLB_MISSES.ANY              */

	},

	[ C(OP_WRITE) ] = {

		[ C(RESULT_ACCESS) ] = -1,

		[ C(RESULT_MISS)   ] = -1,

	},

	[ C(OP_PREFETCH) ] = {

		[ C(RESULT_ACCESS) ] = -1,

		[ C(RESULT_MISS)   ] = -1,

	},

 },

 [ C(BPU ) ] = {

	[ C(OP_READ) ] = {

		[ C(RESULT_ACCESS) ] = 0x00c4, /* BR_INST_RETIRED.ALL_BRANCHES */

		[ C(RESULT_MISS)   ] = 0x03e8, /* BPU_CLEARS.ANY               */

	},

	[ C(OP_WRITE) ] = {

		[ C(RESULT_ACCESS) ] = -1,

		[ C(RESULT_MISS)   ] = -1,

	},

	[ C(OP_PREFETCH) ] = {

		[ C(RESULT_ACCESS) ] = -1,

		[ C(RESULT_MISS)   ] = -1,

	},

 },

};



static __initconst u64 nehalem_hw_cache_event_ids

				[PERF_COUNT_HW_CACHE_MAX]

				[PERF_COUNT_HW_CACHE_OP_MAX]
@@ -2423,7 +2522,9 @@ static __init int intel_pmu_init(void) 
		x86_pmu.event_constraints = intel_core_event_constraints;

		pr_cont("Core2 events, ");

		break;

	case 26:



	case 26: /* 45 nm nehalem, "Bloomfield" */

	case 30: /* 45 nm nehalem, "Lynnfield" */

		memcpy(hw_cache_event_ids, nehalem_hw_cache_event_ids,

		       sizeof(hw_cache_event_ids));
@@ -2437,6 +2538,15 @@ static __init int intel_pmu_init(void) 
		x86_pmu.event_constraints = intel_gen_event_constraints;

		pr_cont("Atom events, ");

		break;



	case 37: /* 32 nm nehalem, "Clarkdale" */

	case 44: /* 32 nm nehalem, "Gulftown" */

		memcpy(hw_cache_event_ids, westmere_hw_cache_event_ids,

		       sizeof(hw_cache_event_ids));



		x86_pmu.event_constraints = intel_westmere_event_constraints;

		pr_cont("Westmere events, ");

		break;

	default:

		/*

		 * default constraints for v2 and up

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