1 files changed, 4 insertions, 146 deletions

diff --git a/arch/arm/kernel/perf_event_v6.c b/arch/arm/kernel/perf_event_v6.c
index 1ae99deeec..d9fd538415 100644
--- a/arch/arm/kernel/perf_event_v6.c
+++ b/arch/arm/kernel/perf_event_v6.c
@@ -113,69 +113,6 @@ static const unsigned armv6_perf_cache_map[PERF_COUNT_HW_CACHE_MAX]
 	[C(ITLB)][C(OP_WRITE)][C(RESULT_MISS)]	= ARMV6_PERFCTR_ITLB_MISS,
 };
 
-enum armv6mpcore_perf_types {
-	ARMV6MPCORE_PERFCTR_ICACHE_MISS	    = 0x0,
-	ARMV6MPCORE_PERFCTR_IBUF_STALL	    = 0x1,
-	ARMV6MPCORE_PERFCTR_DDEP_STALL	    = 0x2,
-	ARMV6MPCORE_PERFCTR_ITLB_MISS	    = 0x3,
-	ARMV6MPCORE_PERFCTR_DTLB_MISS	    = 0x4,
-	ARMV6MPCORE_PERFCTR_BR_EXEC	    = 0x5,
-	ARMV6MPCORE_PERFCTR_BR_NOTPREDICT   = 0x6,
-	ARMV6MPCORE_PERFCTR_BR_MISPREDICT   = 0x7,
-	ARMV6MPCORE_PERFCTR_INSTR_EXEC	    = 0x8,
-	ARMV6MPCORE_PERFCTR_DCACHE_RDACCESS = 0xA,
-	ARMV6MPCORE_PERFCTR_DCACHE_RDMISS   = 0xB,
-	ARMV6MPCORE_PERFCTR_DCACHE_WRACCESS = 0xC,
-	ARMV6MPCORE_PERFCTR_DCACHE_WRMISS   = 0xD,
-	ARMV6MPCORE_PERFCTR_DCACHE_EVICTION = 0xE,
-	ARMV6MPCORE_PERFCTR_SW_PC_CHANGE    = 0xF,
-	ARMV6MPCORE_PERFCTR_MAIN_TLB_MISS   = 0x10,
-	ARMV6MPCORE_PERFCTR_EXPL_MEM_ACCESS = 0x11,
-	ARMV6MPCORE_PERFCTR_LSU_FULL_STALL  = 0x12,
-	ARMV6MPCORE_PERFCTR_WBUF_DRAINED    = 0x13,
-	ARMV6MPCORE_PERFCTR_CPU_CYCLES	    = 0xFF,
-};
-
-/*
- * The hardware events that we support. We do support cache operations but
- * we have harvard caches and no way to combine instruction and data
- * accesses/misses in hardware.
- */
-static const unsigned armv6mpcore_perf_map[PERF_COUNT_HW_MAX] = {
-	PERF_MAP_ALL_UNSUPPORTED,
-	[PERF_COUNT_HW_CPU_CYCLES]		= ARMV6MPCORE_PERFCTR_CPU_CYCLES,
-	[PERF_COUNT_HW_INSTRUCTIONS]		= ARMV6MPCORE_PERFCTR_INSTR_EXEC,
-	[PERF_COUNT_HW_BRANCH_INSTRUCTIONS]	= ARMV6MPCORE_PERFCTR_BR_EXEC,
-	[PERF_COUNT_HW_BRANCH_MISSES]		= ARMV6MPCORE_PERFCTR_BR_MISPREDICT,
-	[PERF_COUNT_HW_STALLED_CYCLES_FRONTEND]	= ARMV6MPCORE_PERFCTR_IBUF_STALL,
-	[PERF_COUNT_HW_STALLED_CYCLES_BACKEND]	= ARMV6MPCORE_PERFCTR_LSU_FULL_STALL,
-};
-
-static const unsigned armv6mpcore_perf_cache_map[PERF_COUNT_HW_CACHE_MAX]
-					[PERF_COUNT_HW_CACHE_OP_MAX]
-					[PERF_COUNT_HW_CACHE_RESULT_MAX] = {
-	PERF_CACHE_MAP_ALL_UNSUPPORTED,
-
-	[C(L1D)][C(OP_READ)][C(RESULT_ACCESS)]	= ARMV6MPCORE_PERFCTR_DCACHE_RDACCESS,
-	[C(L1D)][C(OP_READ)][C(RESULT_MISS)]	= ARMV6MPCORE_PERFCTR_DCACHE_RDMISS,
-	[C(L1D)][C(OP_WRITE)][C(RESULT_ACCESS)]	= ARMV6MPCORE_PERFCTR_DCACHE_WRACCESS,
-	[C(L1D)][C(OP_WRITE)][C(RESULT_MISS)]	= ARMV6MPCORE_PERFCTR_DCACHE_WRMISS,
-
-	[C(L1I)][C(OP_READ)][C(RESULT_MISS)]	= ARMV6MPCORE_PERFCTR_ICACHE_MISS,
-
-	/*
-	 * The ARM performance counters can count micro DTLB misses, micro ITLB
-	 * misses and main TLB misses. There isn't an event for TLB misses, so
-	 * use the micro misses here and if users want the main TLB misses they
-	 * can use a raw counter.
-	 */
-	[C(DTLB)][C(OP_READ)][C(RESULT_MISS)]	= ARMV6MPCORE_PERFCTR_DTLB_MISS,
-	[C(DTLB)][C(OP_WRITE)][C(RESULT_MISS)]	= ARMV6MPCORE_PERFCTR_DTLB_MISS,
-
-	[C(ITLB)][C(OP_READ)][C(RESULT_MISS)]	= ARMV6MPCORE_PERFCTR_ITLB_MISS,
-	[C(ITLB)][C(OP_WRITE)][C(RESULT_MISS)]	= ARMV6MPCORE_PERFCTR_ITLB_MISS,
-};
-
 static inline unsigned long
 armv6_pmcr_read(void)
 {
@@ -268,10 +205,8 @@ static inline void armv6pmu_write_counter(struct perf_event *event, u64 value)
 
 static void armv6pmu_enable_event(struct perf_event *event)
 {
-	unsigned long val, mask, evt, flags;
-	struct arm_pmu *cpu_pmu = to_arm_pmu(event->pmu);
+	unsigned long val, mask, evt;
 	struct hw_perf_event *hwc = &event->hw;
-	struct pmu_hw_events *events = this_cpu_ptr(cpu_pmu->hw_events);
 	int idx = hwc->idx;
 
 	if (ARMV6_CYCLE_COUNTER == idx) {
@@ -294,12 +229,10 @@ static void armv6pmu_enable_event(struct perf_event *event)
 	 * Mask out the current event and set the counter to count the event
 	 * that we're interested in.
 	 */
-	raw_spin_lock_irqsave(&events->pmu_lock, flags);
 	val = armv6_pmcr_read();
 	val &= ~mask;
 	val |= evt;
 	armv6_pmcr_write(val);
-	raw_spin_unlock_irqrestore(&events->pmu_lock, flags);
 }
 
 static irqreturn_t
@@ -362,26 +295,20 @@ armv6pmu_handle_irq(struct arm_pmu *cpu_pmu)
 
 static void armv6pmu_start(struct arm_pmu *cpu_pmu)
 {
-	unsigned long flags, val;
-	struct pmu_hw_events *events = this_cpu_ptr(cpu_pmu->hw_events);
+	unsigned long val;
 
-	raw_spin_lock_irqsave(&events->pmu_lock, flags);
 	val = armv6_pmcr_read();
 	val |= ARMV6_PMCR_ENABLE;
 	armv6_pmcr_write(val);
-	raw_spin_unlock_irqrestore(&events->pmu_lock, flags);
 }
 
 static void armv6pmu_stop(struct arm_pmu *cpu_pmu)
 {
-	unsigned long flags, val;
-	struct pmu_hw_events *events = this_cpu_ptr(cpu_pmu->hw_events);
+	unsigned long val;
 
-	raw_spin_lock_irqsave(&events->pmu_lock, flags);
 	val = armv6_pmcr_read();
 	val &= ~ARMV6_PMCR_ENABLE;
 	armv6_pmcr_write(val);
-	raw_spin_unlock_irqrestore(&events->pmu_lock, flags);
 }
 
 static int
@@ -419,10 +346,8 @@ static void armv6pmu_clear_event_idx(struct pmu_hw_events *cpuc,
 
 static void armv6pmu_disable_event(struct perf_event *event)
 {
-	unsigned long val, mask, evt, flags;
-	struct arm_pmu *cpu_pmu = to_arm_pmu(event->pmu);
+	unsigned long val, mask, evt;
 	struct hw_perf_event *hwc = &event->hw;
-	struct pmu_hw_events *events = this_cpu_ptr(cpu_pmu->hw_events);
 	int idx = hwc->idx;
 
 	if (ARMV6_CYCLE_COUNTER == idx) {
@@ -444,43 +369,10 @@ static void armv6pmu_disable_event(struct perf_event *event)
 	 * of ETM bus signal assertion cycles. The external reporting should
 	 * be disabled and so this should never increment.
 	 */
-	raw_spin_lock_irqsave(&events->pmu_lock, flags);
-	val = armv6_pmcr_read();
-	val &= ~mask;
-	val |= evt;
-	armv6_pmcr_write(val);
-	raw_spin_unlock_irqrestore(&events->pmu_lock, flags);
-}
-
-static void armv6mpcore_pmu_disable_event(struct perf_event *event)
-{
-	unsigned long val, mask, flags, evt = 0;
-	struct arm_pmu *cpu_pmu = to_arm_pmu(event->pmu);
-	struct hw_perf_event *hwc = &event->hw;
-	struct pmu_hw_events *events = this_cpu_ptr(cpu_pmu->hw_events);
-	int idx = hwc->idx;
-
-	if (ARMV6_CYCLE_COUNTER == idx) {
-		mask	= ARMV6_PMCR_CCOUNT_IEN;
-	} else if (ARMV6_COUNTER0 == idx) {
-		mask	= ARMV6_PMCR_COUNT0_IEN;
-	} else if (ARMV6_COUNTER1 == idx) {
-		mask	= ARMV6_PMCR_COUNT1_IEN;
-	} else {
-		WARN_ONCE(1, "invalid counter number (%d)\n", idx);
-		return;
-	}
-
-	/*
-	 * Unlike UP ARMv6, we don't have a way of stopping the counters. We
-	 * simply disable the interrupt reporting.
-	 */
-	raw_spin_lock_irqsave(&events->pmu_lock, flags);
 	val = armv6_pmcr_read();
 	val &= ~mask;
 	val |= evt;
 	armv6_pmcr_write(val);
-	raw_spin_unlock_irqrestore(&events->pmu_lock, flags);
 }
 
 static int armv6_map_event(struct perf_event *event)
@@ -525,40 +417,7 @@ static int armv6_1176_pmu_init(struct arm_pmu *cpu_pmu)
 	return 0;
 }
 
-/*
- * ARMv6mpcore is almost identical to single core ARMv6 with the exception
- * that some of the events have different enumerations and that there is no
- * *hack* to stop the programmable counters. To stop the counters we simply
- * disable the interrupt reporting and update the event. When unthrottling we
- * reset the period and enable the interrupt reporting.
- */
-
-static int armv6mpcore_map_event(struct perf_event *event)
-{
-	return armpmu_map_event(event, &armv6mpcore_perf_map,
-				&armv6mpcore_perf_cache_map, 0xFF);
-}
-
-static int armv6mpcore_pmu_init(struct arm_pmu *cpu_pmu)
-{
-	cpu_pmu->name		= "armv6_11mpcore";
-	cpu_pmu->handle_irq	= armv6pmu_handle_irq;
-	cpu_pmu->enable		= armv6pmu_enable_event;
-	cpu_pmu->disable	= armv6mpcore_pmu_disable_event;
-	cpu_pmu->read_counter	= armv6pmu_read_counter;
-	cpu_pmu->write_counter	= armv6pmu_write_counter;
-	cpu_pmu->get_event_idx	= armv6pmu_get_event_idx;
-	cpu_pmu->clear_event_idx = armv6pmu_clear_event_idx;
-	cpu_pmu->start		= armv6pmu_start;
-	cpu_pmu->stop		= armv6pmu_stop;
-	cpu_pmu->map_event	= armv6mpcore_map_event;
-	cpu_pmu->num_events	= 3;
-
-	return 0;
-}
-
 static const struct of_device_id armv6_pmu_of_device_ids[] = {
-	{.compatible = "arm,arm11mpcore-pmu",	.data = armv6mpcore_pmu_init},
 	{.compatible = "arm,arm1176-pmu",	.data = armv6_1176_pmu_init},
 	{.compatible = "arm,arm1136-pmu",	.data = armv6_1136_pmu_init},
 	{ /* sentinel value */ }
@@ -568,7 +427,6 @@ static const struct pmu_probe_info armv6_pmu_probe_table[] = {
 	ARM_PMU_PROBE(ARM_CPU_PART_ARM1136, armv6_1136_pmu_init),
 	ARM_PMU_PROBE(ARM_CPU_PART_ARM1156, armv6_1156_pmu_init),
 	ARM_PMU_PROBE(ARM_CPU_PART_ARM1176, armv6_1176_pmu_init),
-	ARM_PMU_PROBE(ARM_CPU_PART_ARM11MPCORE, armv6mpcore_pmu_init),
 	{ /* sentinel value */ }
 };