[dm-devel] [PATCH v3 01/17] hashtable: introduce a small and naive hashtable

Pedro Alves palves at redhat.com
Tue Sep 4 17:21:07 UTC 2012


On 09/04/2012 06:17 PM, Steven Rostedt wrote:
> On Tue, 2012-09-04 at 17:40 +0100, Pedro Alves wrote:
> 
>> BTW, you can also go a step further and remove the need to close with double }},
>> with something like:
>>
>> #define do_for_each_ftrace_rec(pg, rec)                                          \
>>         for (pg = ftrace_pages_start, rec = &pg->records[pg->index];             \
>>              pg && rec == &pg->records[pg->index];                               \
>>              pg = pg->next)                                                      \
>>           for (rec = pg->records; rec < &pg->records[pg->index]; rec++)
>>
> 
> Yeah, but why bother? It's hidden in a macro, and the extra '{ }' shows
> that this is something "special".

The point of both changes is that there's nothing special in the end
at all.  It all just works...

-- 
Pedro Alves




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