Re: [PATCH v2 1/8] lib/printbuf: New data structure for heap-allocated strings

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On Fri, 22 Apr 2022 01:40:15 -0400
Kent Overstreet <kent.overstreet@xxxxxxxxx> wrote:

> So I'm honestly not super eager to start modifying tricky arch code that I can't
> test, and digging into what looked like non trivial interactions between the way
> the traceing code using seq_buf (naturally, given that's where it originates).

Yes, seq_buf came from the tracing system but was to be used in a more
broader way. I had originally pushed trace_seq into the lib directory, but
Andrew Morton said it was too specific to tracing. Thus, I gutted the
generic parts out of it and created seq_buf, which looks to be something
that you could use. I had patches to convert seq_file to it, but ran out of
time. I probably can pull them out of the closet and start that again.

> 
> Now yes, I _could_ do a wholesale conversion of seq_buf to printbuf and delete
> that code, but doing that job right, to be confident that I'm not introducing
> bugs, is going to take more time than I really want to invest right now. I
> really don't like to play fast and loose with that stuff.

I would be happy to work with you to convert to seq_buf. If there's
something missing from it, I can help you change it so that it doesn't
cause any regressions with the tracing subsystem.

This is how open source programming is suppose to work ;-)

-- Steve



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