> From: Avadhut Naik <[email protected]>
> [...]
> --- a/include/trace/events/mce.h
> +++ b/include/trace/events/mce.h
> @@ -43,6 +43,7 @@ TRACE_EVENT(mce_record,
> __field( u8, bank )
> __field( u8, cpuvendor )
> __field( u32, microcode )
> + __dynamic_array(u8, v_data, sizeof(err->vendor))
> ),
>
> TP_fast_assign(
> @@ -65,9 +66,10 @@ TRACE_EVENT(mce_record,
> __entry->bank = err->m.bank;
> __entry->cpuvendor = err->m.cpuvendor;
> __entry->microcode = err->m.microcode;
> + memcpy(__get_dynamic_array(v_data), &err->vendor,
> +sizeof(err->vendor));
> ),
>
> - TP_printk("CPU: %d, MCGc/s: %llx/%llx, MC%d: %016Lx, IPID: %016Lx,
> ADDR: %016Lx, MISC: %016Lx, SYND: %016Lx, RIP: %02x:<%016Lx>, TSC: %llx,
> PPIN: %llx, vendor: %u, CPUID: %x, time: %llu, socket: %u, APIC: %x,
> microcode: %x",
> + TP_printk("CPU: %d, MCGc/s: %llx/%llx, MC%d: %016llx, IPID: %016llx,
> +ADDR: %016llx, MISC: %016llx, SYND: %016llx, RIP: %02x:<%016llx>, TSC:
> +%llx, PPIN: %llx, vendor: %u, CPUID: %x, time: %llu, socket: %u, APIC:
> +%x, microcode: %x, vendor data: %s",
> __entry->cpu,
> __entry->mcgcap, __entry->mcgstatus,
> __entry->bank, __entry->status,
> @@ -83,7 +85,8 @@ TRACE_EVENT(mce_record,
> __entry->walltime,
> __entry->socketid,
> __entry->apicid,
> - __entry->microcode)
> + __entry->microcode,
> + __print_dynamic_array(v_data, 8))
What is the 2nd parameter '8' about?
The 2nd parameter is about the element size.
The element type is 'u8', as defined above.
Therefore:
__print_dynamic_array(v_data, sizeof(u8)))
-Qiuxu
[...]
