Re: [PATCH bpf-next] bpf: Add show_fdinfo for perf_event

[Tao Chen <chen.dylane@linux.dev>]

在 2025/6/6 05:53, Jiri Olsa 写道:
> On Thu, Jun 05, 2025 at 12:37:22AM +0800, Tao Chen wrote:
> 
> SNIP
> 
>> +static void bpf_perf_link_fdinfo_uprobe(const struct perf_event *event,
>> +					struct seq_file *seq)
>> +{
>> +	const char *name;
>> +	int err;
>> +	u32 prog_id, type;
>> +	u64 offset, addr;
>> +	unsigned long missed;
>> +
>> +	err = bpf_get_perf_event_info(event, &prog_id, &type, &name,
>> +				      &offset, &addr, &missed);
> 
> hi,
> addr now gets ref_ctr_offset:
>    823153334042 bpf: Add support to retrieve ref_ctr_offset for uprobe perf link
> 
> so let's display that
> 

will add it in v2, thanks.

> thanks,
> jirka
> 
> 
> 
>> +	if (err)
>> +		return;
>> +
>> +	if (type == BPF_FD_TYPE_URETPROBE)
>> +		type = BPF_PERF_EVENT_URETPROBE;
>> +	else
>> +		type = BPF_PERF_EVENT_UPROBE;
>> +
>> +	seq_printf(seq,
>> +		   "name:\t%s\n"
>> +		   "offset:\t%llu\n"
>> +		   "event_type:\t%u\n"
>> +		   "cookie:\t%llu\n",
>> +		   name, offset, type, event->bpf_cookie);
>> +
>> +}
>>   #endif
>>   
> 
> SNIP


-- 
Best Regards
Tao Chen