Re: [PATCH v3 2/4] memblock tests: add verbose output to memblock tests

From: Rebecca Mckeever
Date: Thu Jun 23 2022 - 01:11:29 EST


On Wed, Jun 22, 2022 at 11:05:27PM -0500, Mike Rapoport wrote:
> On Thu, Jun 23, 2022 at 09:29:05AM +0800, Huang, Shaoqin wrote:
> >
> >
> > On 6/23/2022 8:45 AM, Rebecca Mckeever wrote:
> > > On Wed, Jun 22, 2022 at 06:32:04PM +0800, Huang, Shaoqin wrote:
> > > > Just test it and everything works fine. And I think there are some thing can
> > > > improve:
> > > >
> > > > The prefix_push() and prefix_pop() are used in so many functions and
> > > > almost of them just put the prefix_push(__func__) begin in the head and the
> > > > prefix_pop() in the end.
> > > > May be you can define some macro that when you output something and
> > > > automatically push the __func__ as prefix. And when leave the function,
> > > > automatically pop it. And only in some special place, you call it manually.
> > > >
> > > Thank you for your review. I'm not sure how you would automatically push
> > > __func__ since you have to be inside the function to access that
> > > variable. Let me know if you have any suggestions. I am thinking about
> > > adding another function in common.c that just calls test_pass() followed
> > > by prefix_pop() since those are called together so often.
> >
> > Just like:
> > #define test_pass_macro() \
> > do { \
> > prefix_push(__func__); \
> > test_pass(); \
> > prefix_pop(); \
> > } while (0)
>
> This will not print the name of the failing test, e.g. instead of
>
> not ok 28 : memblock_alloc: alloc_bottom_up_disjoint_check: failed
>
> with Rebecca's implementation it'll print
>
> not ok 28 : memblock_alloc: failed
>
Oh yeah, prefix_push() needs to be called before the asserts.

> How about
>
> #define PREFIX_PUSH() prefix_push(__func__)?
>
Good idea. What about

#define TEST_PASS() do { \
test_pass(); \
prefix_pop(); \
} while (0)

? Or would it be better to make a function?

> > This macro will automatically push the __fun__ as prefix when you call
> > test_pass_macro(). And then pop it after test_pass() output.
> >
> > And use this macro() to hidden most of the paired prefix_* functions.
> >
> > And I think that's the simplist way. May be someone has a better solution.
> >
>
> --
> Sincerely yours,
> Mike.

Thanks,
Rebecca