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