On 15 April 2012 23:33, Alexander V. Chernikov <melif...@freebsd.org> wrote:
> On 16.04.2012 01:17, Adrian Chadd wrote:
>>
>> Hi,
>>
>> This has broken (at least) net80211 and bpf, with LOR:
>
> Yes, it is. Please try the attached patch
Hi,
This seems like a very, very complicated diff.
* You've removed BPF_LOCK_ASSERT() inside bpf_detachd_locked() - why'd
you do that?
* You removed a comment ("We're already protected by the global lock")
which is still relevant/valid
* There are lots of modifications to the read/write locks here - I'm
not sure whether they're at all relevant to my immediate problem and
may belong in separate commits
Is there a document somewhere which describes what the "new" style BPF
locking should be?
I "just" added BPF_LOCK() / BPF_UNLOCK() around all the calls to
bpf_detachd() which weren't locked (there were a few.)
One final question - should the BPF global lock be recursive?
thanks,
Adrian
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