Re: [PATCH 0/4] firewire: ohci: remove obsolete module-level debug parameter

Adam Goldman <[email protected]> Wed, 29 Oct 2025 02:36:33 -0700
Newsgroups gmane.linux.kernel.firewire.devel
Message-ID <[email protected]>
On Sat, Oct 25, 2025 at 09:46:29AM +0900, Takashi Sakamoto wrote:
> In my opinion, using tracepoints means to leave from the message buffer
> for printk once. There are several ways to retrieve the content of ring
> buffer for tracepoints events in userspace, and we have some userspace
> applications to utilize them.
> 
> 1. By debugfs
> 2. By file descriptor returned from perf_event_open(2) system call
> 3. By tracefs
> 4. By printk message buffer
> 5. By BPF
>
> [...]

Hi Takashi,

Thank you for your guidance. It is very helpful.

-- Adam