Re: [PATCH resend ] tracepoint: Print the function symbol when tracepoint_debug is set

[Shijie Huang <shijie@amperemail.onmicrosoft.com>]

On 2025/3/5 23:47, Steven Rostedt wrote:
> On Wed, 5 Mar 2025 08:53:43 -0500
> Mathieu Desnoyers <mathieu.desnoyers@efficios.com> wrote:
>
>> On 2025-03-04 20:55, Huang Shijie wrote:
>>> When tracepoint_debug is set, we may get the output in kernel log:
>>>        [  380.013843] Probe 0 : 00000000f0d68cda
>>>
>>> It is not readable, so change to print the function symbol.
>>> After this patch, the output may becomes:
>>>        [   54.930567] Probe 0 : perf_trace_sched_wakeup_template
>> What would it print if the address is corrupted ?
>>
>> Perhaps we could do like the backtrace code and print e.g.
>>
>> [<00000000f0d68cda>] perf_trace_sched_wakeup_template+0xNN/0xMM
>>
>> ?
>>
>> I don't care about the actual layout, but removing the address
>> from the formatted output appears to be removing useful data
>> in debug situations.
>>
> Perhaps this can use "%pS" which shows both the function entry and the

okay, I can change it to use "%pS" in next version if we think it is 
good enough:

      [   55.225555] Probe 0 : perf_trace_sched_wakeup_template+0x0/0x20


Thanks

Huang Shijie