Messages in this thread | | | Subject | Re: [PATCH v6 01/12] tools lib traceevent: Convert remaining %p[fF] users to %p[sS] | From | Joe Perches <> | Date | Tue, 10 Sep 2019 11:42:06 -0700 |
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On Tue, 2019-09-10 at 14:26 -0400, Steven Rostedt wrote: > On Tue, 10 Sep 2019 10:18:44 -0700 > Joe Perches <joe@perches.com> wrote: > > > > It's not just for the lastest kernel. We must maintain backward > > > compatibility here too. If there use to be a usage of this, then we > > > must keep it until the kernels are no longer used (perhaps 7 years?) > > > > That argues for not using "%pfw" at all for some number of years. > > > > Perhaps the '%pfw' should be '%pnfw' for 'name' and 'fwnode' > > -ENOCOMPREHENSION
Perhaps you were not copied on the whole series.
https://lore.kernel.org/lkml/20190910084707.18380-1-sakari.ailus@linux.intel.com/
As I understand it, Sakair Ailus is proposing to obsolete the current vsprintf "%p[Ff]" extension and replace the usage with a new "%pfw" extension which would emit the name of a pointer to "struct fwnode {}".
https://lore.kernel.org/lkml/20190910084707.18380-10-sakari.ailus@linux.intel.com/
If reusing "%pf<foo>" is a problem, then instead it might be reasonable to have a new "%pn<foo>" for that use instead.
btw:
Is there kernel version information available in trace output files?
If so, it might be reasonable to change the tooling there instead.
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