19 Sep
2025
19 Sep
'25
1 p.m.
On 9/18/2025 11:32 PM, Steven Rostedt wrote:
On Thu, 18 Sep 2025 21:15:57 +0800 Fuyu Zhao zhaofuyu@vivo.com wrote:
As for the reason not to unregister and register a new callback: callbacks registered directly inside the kernel cannot be unregistered from user space. From user space, we can only attach additional callbacks with BPF programs, but can not remove or replace the ones already registered in the kernel. Therefore, an override mechanism is needed.
The fact that user space cannot unregister or override the current callbacks, to me is a feature and not a bug.
-- Steve
I see, thank you for sharing your view — I’ll keep it in mind.
Sincerely, Fuyu