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-rw-r--r--arch/x86/kernel/cpu/Makefile2
-rw-r--r--arch/x86/kernel/cpu/perf_event_knc.c319
2 files changed, 1 insertions, 320 deletions
diff --git a/arch/x86/kernel/cpu/Makefile b/arch/x86/kernel/cpu/Makefile
index 973b77bb9ceb..3195f7d06529 100644
--- a/arch/x86/kernel/cpu/Makefile
+++ b/arch/x86/kernel/cpu/Makefile
@@ -31,7 +31,7 @@ obj-$(CONFIG_CPU_SUP_TRANSMETA_32) += transmeta.o
obj-$(CONFIG_CPU_SUP_UMC_32) += umc.o
ifdef CONFIG_PERF_EVENTS
-obj-$(CONFIG_CPU_SUP_INTEL) += perf_event_p6.o perf_event_knc.o perf_event_p4.o
+obj-$(CONFIG_CPU_SUP_INTEL) += perf_event_p6.o perf_event_p4.o
obj-$(CONFIG_CPU_SUP_INTEL) += perf_event_msr.o
obj-$(CONFIG_CPU_SUP_AMD) += perf_event_msr.o
diff --git a/arch/x86/kernel/cpu/perf_event_knc.c b/arch/x86/kernel/cpu/perf_event_knc.c
deleted file mode 100644
index 5b0c232d1ee6..000000000000
--- a/arch/x86/kernel/cpu/perf_event_knc.c
+++ /dev/null
@@ -1,319 +0,0 @@
-/* Driver for Intel Xeon Phi "Knights Corner" PMU */
-
-#include <linux/perf_event.h>
-#include <linux/types.h>
-
-#include <asm/hardirq.h>
-
-#include "perf_event.h"
-
-static const u64 knc_perfmon_event_map[] =
-{
- [PERF_COUNT_HW_CPU_CYCLES] = 0x002a,
- [PERF_COUNT_HW_INSTRUCTIONS] = 0x0016,
- [PERF_COUNT_HW_CACHE_REFERENCES] = 0x0028,
- [PERF_COUNT_HW_CACHE_MISSES] = 0x0029,
- [PERF_COUNT_HW_BRANCH_INSTRUCTIONS] = 0x0012,
- [PERF_COUNT_HW_BRANCH_MISSES] = 0x002b,
-};
-
-static const u64 __initconst knc_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) ] = {
- /* On Xeon Phi event "0" is a valid DATA_READ */
- /* (L1 Data Cache Reads) Instruction. */
- /* We code this as ARCH_PERFMON_EVENTSEL_INT as this */
- /* bit will always be set in x86_pmu_hw_config(). */
- [ C(RESULT_ACCESS) ] = ARCH_PERFMON_EVENTSEL_INT,
- /* DATA_READ */
- [ C(RESULT_MISS) ] = 0x0003, /* DATA_READ_MISS */
- },
- [ C(OP_WRITE) ] = {
- [ C(RESULT_ACCESS) ] = 0x0001, /* DATA_WRITE */
- [ C(RESULT_MISS) ] = 0x0004, /* DATA_WRITE_MISS */
- },
- [ C(OP_PREFETCH) ] = {
- [ C(RESULT_ACCESS) ] = 0x0011, /* L1_DATA_PF1 */
- [ C(RESULT_MISS) ] = 0x001c, /* L1_DATA_PF1_MISS */
- },
- },
- [ C(L1I ) ] = {
- [ C(OP_READ) ] = {
- [ C(RESULT_ACCESS) ] = 0x000c, /* CODE_READ */
- [ C(RESULT_MISS) ] = 0x000e, /* CODE_CACHE_MISS */
- },
- [ 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) ] = 0,
- [ C(RESULT_MISS) ] = 0x10cb, /* L2_READ_MISS */
- },
- [ C(OP_WRITE) ] = {
- [ C(RESULT_ACCESS) ] = 0x10cc, /* L2_WRITE_HIT */
- [ C(RESULT_MISS) ] = 0,
- },
- [ C(OP_PREFETCH) ] = {
- [ C(RESULT_ACCESS) ] = 0x10fc, /* L2_DATA_PF2 */
- [ C(RESULT_MISS) ] = 0x10fe, /* L2_DATA_PF2_MISS */
- },
- },
- [ C(DTLB) ] = {
- [ C(OP_READ) ] = {
- [ C(RESULT_ACCESS) ] = ARCH_PERFMON_EVENTSEL_INT,
- /* DATA_READ */
- /* see note on L1 OP_READ */
- [ C(RESULT_MISS) ] = 0x0002, /* DATA_PAGE_WALK */
- },
- [ C(OP_WRITE) ] = {
- [ C(RESULT_ACCESS) ] = 0x0001, /* DATA_WRITE */
- [ C(RESULT_MISS) ] = 0x0002, /* DATA_PAGE_WALK */
- },
- [ C(OP_PREFETCH) ] = {
- [ C(RESULT_ACCESS) ] = 0x0,
- [ C(RESULT_MISS) ] = 0x0,
- },
- },
- [ C(ITLB) ] = {
- [ C(OP_READ) ] = {
- [ C(RESULT_ACCESS) ] = 0x000c, /* CODE_READ */
- [ C(RESULT_MISS) ] = 0x000d, /* CODE_PAGE_WALK */
- },
- [ 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) ] = 0x0012, /* BRANCHES */
- [ C(RESULT_MISS) ] = 0x002b, /* BRANCHES_MISPREDICTED */
- },
- [ C(OP_WRITE) ] = {
- [ C(RESULT_ACCESS) ] = -1,
- [ C(RESULT_MISS) ] = -1,
- },
- [ C(OP_PREFETCH) ] = {
- [ C(RESULT_ACCESS) ] = -1,
- [ C(RESULT_MISS) ] = -1,
- },
- },
-};
-
-
-static u64 knc_pmu_event_map(int hw_event)
-{
- return knc_perfmon_event_map[hw_event];
-}
-
-static struct event_constraint knc_event_constraints[] =
-{
- INTEL_EVENT_CONSTRAINT(0xc3, 0x1), /* HWP_L2HIT */
- INTEL_EVENT_CONSTRAINT(0xc4, 0x1), /* HWP_L2MISS */
- INTEL_EVENT_CONSTRAINT(0xc8, 0x1), /* L2_READ_HIT_E */
- INTEL_EVENT_CONSTRAINT(0xc9, 0x1), /* L2_READ_HIT_M */
- INTEL_EVENT_CONSTRAINT(0xca, 0x1), /* L2_READ_HIT_S */
- INTEL_EVENT_CONSTRAINT(0xcb, 0x1), /* L2_READ_MISS */
- INTEL_EVENT_CONSTRAINT(0xcc, 0x1), /* L2_WRITE_HIT */
- INTEL_EVENT_CONSTRAINT(0xce, 0x1), /* L2_STRONGLY_ORDERED_STREAMING_VSTORES_MISS */
- INTEL_EVENT_CONSTRAINT(0xcf, 0x1), /* L2_WEAKLY_ORDERED_STREAMING_VSTORE_MISS */
- INTEL_EVENT_CONSTRAINT(0xd7, 0x1), /* L2_VICTIM_REQ_WITH_DATA */
- INTEL_EVENT_CONSTRAINT(0xe3, 0x1), /* SNP_HITM_BUNIT */
- INTEL_EVENT_CONSTRAINT(0xe6, 0x1), /* SNP_HIT_L2 */
- INTEL_EVENT_CONSTRAINT(0xe7, 0x1), /* SNP_HITM_L2 */
- INTEL_EVENT_CONSTRAINT(0xf1, 0x1), /* L2_DATA_READ_MISS_CACHE_FILL */
- INTEL_EVENT_CONSTRAINT(0xf2, 0x1), /* L2_DATA_WRITE_MISS_CACHE_FILL */
- INTEL_EVENT_CONSTRAINT(0xf6, 0x1), /* L2_DATA_READ_MISS_MEM_FILL */
- INTEL_EVENT_CONSTRAINT(0xf7, 0x1), /* L2_DATA_WRITE_MISS_MEM_FILL */
- INTEL_EVENT_CONSTRAINT(0xfc, 0x1), /* L2_DATA_PF2 */
- INTEL_EVENT_CONSTRAINT(0xfd, 0x1), /* L2_DATA_PF2_DROP */
- INTEL_EVENT_CONSTRAINT(0xfe, 0x1), /* L2_DATA_PF2_MISS */
- INTEL_EVENT_CONSTRAINT(0xff, 0x1), /* L2_DATA_HIT_INFLIGHT_PF2 */
- EVENT_CONSTRAINT_END
-};
-
-#define MSR_KNC_IA32_PERF_GLOBAL_STATUS 0x0000002d
-#define MSR_KNC_IA32_PERF_GLOBAL_OVF_CONTROL 0x0000002e
-#define MSR_KNC_IA32_PERF_GLOBAL_CTRL 0x0000002f
-
-#define KNC_ENABLE_COUNTER0 0x00000001
-#define KNC_ENABLE_COUNTER1 0x00000002
-
-static void knc_pmu_disable_all(void)
-{
- u64 val;
-
- rdmsrl(MSR_KNC_IA32_PERF_GLOBAL_CTRL, val);
- val &= ~(KNC_ENABLE_COUNTER0|KNC_ENABLE_COUNTER1);
- wrmsrl(MSR_KNC_IA32_PERF_GLOBAL_CTRL, val);
-}
-
-static void knc_pmu_enable_all(int added)
-{
- u64 val;
-
- rdmsrl(MSR_KNC_IA32_PERF_GLOBAL_CTRL, val);
- val |= (KNC_ENABLE_COUNTER0|KNC_ENABLE_COUNTER1);
- wrmsrl(MSR_KNC_IA32_PERF_GLOBAL_CTRL, val);
-}
-
-static inline void
-knc_pmu_disable_event(struct perf_event *event)
-{
- struct hw_perf_event *hwc = &event->hw;
- u64 val;
-
- val = hwc->config;
- val &= ~ARCH_PERFMON_EVENTSEL_ENABLE;
-
- (void)wrmsrl_safe(hwc->config_base + hwc->idx, val);
-}
-
-static void knc_pmu_enable_event(struct perf_event *event)
-{
- struct hw_perf_event *hwc = &event->hw;
- u64 val;
-
- val = hwc->config;
- val |= ARCH_PERFMON_EVENTSEL_ENABLE;
-
- (void)wrmsrl_safe(hwc->config_base + hwc->idx, val);
-}
-
-static inline u64 knc_pmu_get_status(void)
-{
- u64 status;
-
- rdmsrl(MSR_KNC_IA32_PERF_GLOBAL_STATUS, status);
-
- return status;
-}
-
-static inline void knc_pmu_ack_status(u64 ack)
-{
- wrmsrl(MSR_KNC_IA32_PERF_GLOBAL_OVF_CONTROL, ack);
-}
-
-static int knc_pmu_handle_irq(struct pt_regs *regs)
-{
- struct perf_sample_data data;
- struct cpu_hw_events *cpuc;
- int handled = 0;
- int bit, loops;
- u64 status;
-
- cpuc = this_cpu_ptr(&cpu_hw_events);
-
- knc_pmu_disable_all();
-
- status = knc_pmu_get_status();
- if (!status) {
- knc_pmu_enable_all(0);
- return handled;
- }
-
- loops = 0;
-again:
- knc_pmu_ack_status(status);
- if (++loops > 100) {
- WARN_ONCE(1, "perf: irq loop stuck!\n");
- perf_event_print_debug();
- goto done;
- }
-
- inc_irq_stat(apic_perf_irqs);
-
- for_each_set_bit(bit, (unsigned long *)&status, X86_PMC_IDX_MAX) {
- struct perf_event *event = cpuc->events[bit];
-
- handled++;
-
- if (!test_bit(bit, cpuc->active_mask))
- continue;
-
- if (!intel_pmu_save_and_restart(event))
- continue;
-
- perf_sample_data_init(&data, 0, event->hw.last_period);
-
- if (perf_event_overflow(event, &data, regs))
- x86_pmu_stop(event, 0);
- }
-
- /*
- * Repeat if there is more work to be done:
- */
- status = knc_pmu_get_status();
- if (status)
- goto again;
-
-done:
- knc_pmu_enable_all(0);
-
- return handled;
-}
-
-
-PMU_FORMAT_ATTR(event, "config:0-7" );
-PMU_FORMAT_ATTR(umask, "config:8-15" );
-PMU_FORMAT_ATTR(edge, "config:18" );
-PMU_FORMAT_ATTR(inv, "config:23" );
-PMU_FORMAT_ATTR(cmask, "config:24-31" );
-
-static struct attribute *intel_knc_formats_attr[] = {
- &format_attr_event.attr,
- &format_attr_umask.attr,
- &format_attr_edge.attr,
- &format_attr_inv.attr,
- &format_attr_cmask.attr,
- NULL,
-};
-
-static const struct x86_pmu knc_pmu __initconst = {
- .name = "knc",
- .handle_irq = knc_pmu_handle_irq,
- .disable_all = knc_pmu_disable_all,
- .enable_all = knc_pmu_enable_all,
- .enable = knc_pmu_enable_event,
- .disable = knc_pmu_disable_event,
- .hw_config = x86_pmu_hw_config,
- .schedule_events = x86_schedule_events,
- .eventsel = MSR_KNC_EVNTSEL0,
- .perfctr = MSR_KNC_PERFCTR0,
- .event_map = knc_pmu_event_map,
- .max_events = ARRAY_SIZE(knc_perfmon_event_map),
- .apic = 1,
- .max_period = (1ULL << 39) - 1,
- .version = 0,
- .num_counters = 2,
- .cntval_bits = 40,
- .cntval_mask = (1ULL << 40) - 1,
- .get_event_constraints = x86_get_event_constraints,
- .event_constraints = knc_event_constraints,
- .format_attrs = intel_knc_formats_attr,
-};
-
-__init int knc_pmu_init(void)
-{
- x86_pmu = knc_pmu;
-
- memcpy(hw_cache_event_ids, knc_hw_cache_event_ids,
- sizeof(hw_cache_event_ids));
-
- return 0;
-}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-20 09:10:51 +0000