On Mon, Jun 26, 2023 at 2:53 PM Jakub Kicinski <kuba@xxxxxxxxxx> wrote: > > On Mon, 26 Jun 2023 14:31:39 -0700 Namhyung Kim wrote: > > Right, we want to keep the headers files in the tools in sync with > > the kernel ones. And they are used to generate some tables. > > Full explanation from Arnaldo below. > > > > So I'm ok for the msg_flags.c changes, but please refrain from > > changing the header directly. We will update it later. > > > > With that, > > Acked-by: Namhyung Kim <namhyung@xxxxxxxxxx> > > Ah, missed this email, sounds like this is preferred to Matthieu's > fix, we'll take this one. Hmm.. I believe they are the same when it comes to the changes in the .c file. > > > Also I wonder if the tool needs to keep the original flag > > (SENDPAGE_NOTLAST) for the older kernels. > > That's a bit unclear, because it's just a kernel-internal flag. > Future kernels may well use that bit for something else. Ah, ok then. I thought it's a user-visible flag. > > Better long term solution would be to use an enum so that the values > are included in debuginfo and perf can read them at runtime :( Right, we also consider BTF to read the values and hopefully get rid of the business of copying kernel headers. Thanks, Namhyung
