hulk inclusion category: feature bugzilla: https://gitee.com/openeuler/kernel/issues/I9GZAQ CVE: NA
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Provide a tracing interface for eBPF to collect hardware memory access data in user space.
Signed-off-by: Ze Zuo zuoze1@huawei.com Signed-off-by: Tong Tiangen tongtiangen@huawei.com --- drivers/arm/spe/spe.c | 2 ++ include/trace/events/kmem.h | 27 +++++++++++++++++++++++++++ 2 files changed, 29 insertions(+)
diff --git a/drivers/arm/spe/spe.c b/drivers/arm/spe/spe.c index 91984b82c76b..714889015363 100644 --- a/drivers/arm/spe/spe.c +++ b/drivers/arm/spe/spe.c @@ -15,6 +15,7 @@ #include <linux/platform_device.h> #include <linux/mem_sampling.h> #include <linux/perf/arm_pmu.h> +#include <trace/events/kmem.h>
#include "spe-decoder/arm-spe-decoder.h" #include "spe-decoder/arm-spe-pkt-decoder.h" @@ -742,6 +743,7 @@ void arm_spe_record_enqueue(struct arm_spe_record *record) return; }
+ trace_spe_record((struct mem_sampling_record *)record, smp_processor_id()); record_tail = spe_buf->record_base + spe_buf->nr_records * SPE_RECORD_ENTRY_SIZE; *record_tail = *(struct mem_sampling_record *)record; diff --git a/include/trace/events/kmem.h b/include/trace/events/kmem.h index 0190efe93b0b..803b62aff5fc 100644 --- a/include/trace/events/kmem.h +++ b/include/trace/events/kmem.h @@ -8,6 +8,7 @@ #include <linux/types.h> #include <linux/tracepoint.h> #include <trace/events/mmflags.h> +#include <linux/mem_sampling.h>
DECLARE_EVENT_CLASS(kmem_alloc,
@@ -416,6 +417,32 @@ TRACE_EVENT(mm_mem_sampling_access_record, __entry->cpuid, __entry->pid) ); #endif /* CONFIG_NUMABALANCING_MEM_SAMPLING */ +#ifdef CONFIG_ARM_SPE +TRACE_EVENT(spe_record, + TP_PROTO(struct mem_sampling_record *record, int cpuid), + + TP_ARGS(record, cpuid), + + TP_STRUCT__entry( + __field(u64, vaddr) + __field(u64, paddr) + __field(int, cpuid) + __field(int, pid) + ), + + TP_fast_assign( + __entry->vaddr = record->virt_addr; + __entry->paddr = record->phys_addr; + __entry->cpuid = cpuid; + __entry->pid = record->context_id; + + ), + + TP_printk("vaddr=%llu paddr=%llu cpuid=%d pid=%d", + __entry->vaddr, __entry->paddr, + __entry->cpuid, __entry->pid) +); +#endif /* CONFIG_ARM_SPE */ #endif /* _TRACE_KMEM_H */
/* This part must be outside protection */