Re: [GIT PULL] tracing: make signal tracepoints more useful

From: Oleg Nesterov
Date: Tue Jan 17 2012 - 10:02:10 EST


On 01/17, Steven Rostedt wrote:
>
> People are adding tracepoints all over the kernel without much thought.

Including the tracepoints in __send_signal(). They are stupid and limited.

Yes, I should blame myself in the first place. I was cc'ed, I participated
in the discussion when they were added.

> We take much more care when we add a system call. By making tracepoints
> have as strict a ABI as system calls will cause a maintenance nightmare
> in the future. I guarantee that!

Personally I agree.

That said, I am going to send the patch which adds the new tracepoint
unless Ingo changes his mind. The new info was requested by users who
actually use these events.

Oleg.

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