Messages in this thread | ![/](/images/icornerl.gif) | | Date | Tue, 31 Jan 2023 10:36:23 -0500 | From | Steven Rostedt <> | Subject | Re: [PATCH v15 0/4] trace: Introduce objtrace trigger to trace the kernel object |
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On Tue, 31 Jan 2023 17:55:16 +0800 Jeff Xie <xiehuan09@gmail.com> wrote:
> Hi Steve, > > On Sat, Dec 17, 2022 at 4:27 PM Jeff Xie <xiehuan09@gmail.com> wrote: > > > > On Wed, Nov 30, 2022 at 12:30 AM Steven Rostedt <rostedt@goodmis.org> wrote: > > > > > > On Wed, 30 Nov 2022 00:09:51 +0800 > > > Jeff Xie <xiehuan09@gmail.com> wrote: > > > > > > > > Now instead of searching the function arguments for "obj", we should just > > > > > read the obj value at every function and report when it changed, as well as > > > > > the last function it was still the same. The report will be like the > > > > > "func_repeats" entry. And instead we can print when the object changes, > > > > > something like this: > > > > > > > > > > cat-117 [002] ...2. 1.602245: bio_add_page <-ext4_mpage_readpages object:0xffff88811bee4000 value:0x2000 (last value:0x1000 at [002] __bio_add_page <-bio_add_page ts: 1.602245) > > > > > > > > > > > > I'm just curious if we'll see this rewritten version in the next merge > > > > window ;-) > > > > > > Unfortunately, this ended up getting dropped in priority, as my workload > > > increased internally. :-/ > > > > I would like to ask if there is any hope that this patchset can be > merged into the linux kernel in the end. > > We spent a lot of time on this patchset, I don't want to give up so easily ;-) >
I think we were near the end, but it wasn't quite done, as I want it to be integrated with the kprobes indirection interface:
https://lore.kernel.org/all/20220924160136.5029e942@rorschach.local.home/
Which I started to work on but didn't have time to finish, nor even get very far with it.
I think once we can get that implemented, then this can get in. I don't want to give up on it either.
-- Steve
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