[OE-core] [RFC] Preventing race when compiling external kernel modules

[Koen Kooi]

Op 14 okt. 2011, om 13:42 heeft Richard Purdie het volgende geschreven:

> On Fri, 2011-10-14 at 12:47 +0200, Anders Darander wrote:
>> * Anders Darander <anders at chargestorm.se> [111014 09:55]:
>>> In our local tree, I've circumvented this race by applying a patch like
>>> [3]. (Well, we could likely have put the lock in do_make_scripts()
>>> instead of module_do_compile(), as we have done currently). Obviously,
>>> I'm not proposing to apply this patch, as it depends on lockfile from
>>> the procmail-package (host-package).
>> 
>> Just to confirm, it seems (after a very few tests) that it indeed is
>> enough to guard the do_make_scripts() with the lock.
>> 
>> However, the question on how to make the real solution remains...
> 
> I've not tested this but it might give you enough info to test
> something:
> 
> (Basic idea is to promote that function to a task, then apply a lock to
> it).

Or taking a step back, deleting the scripts to save 0.002 kilobytes in sysroot was not a good idea. Shall we just stop deleting them and go back to the old way which actually worked?