milliseconds due to what is essentially n^2 algorithmic complexity. This
change makes the algorithm N*2 instead. This heavy processing manifested
itself as skipping in audio and video playback due to the long scheduling
latencies and contention on giant by pcm.
- flushbufqueues() is now responsible for flushing multiple buffers
rather than one at a time. This allows us to save our progress in the
list by using a sentinal. We must do the numdirtywakeup() and
waitrunningbufspace() here now rather than in buf_daemon().
- Also add a uio_yield() after we have processed the list once for bufs
without deps and again for bufs with deps. This is to release Giant
and allow any other giant locked code to proceed.
Tested by: Many users on current@
Revealed by: schedgraph traces sent by Emil Mikulic & Anthony Ginepro
list on fork() if the process doesn't actually have references to any
semaphores. This avoids extra work, as well as potentially asking to
allocate storage for 0 references.
Found by: avatar
MFC after: 1 week
or a bssid+ssid. This is needed for later versions of wpa_supplicant
and for forthcoming addons to wpa_supplicant.
Note this is an api change and applications must be rebuilt.
using the layer2, mac and mac-type keywords.
This is one of the last features that bridge.c has over if_bridge and gets us
very close to a full functional replacement.
Approved by: mlaier (mentor)
points to convert _sema() to _sem() for consistency purposes with
respect to the other semaphore-related entry points:
mac_init_sysv_sema() -> mac_init_sysv_sem()
mac_destroy_sysv_sem() -> mac_destroy_sysv_sem()
mac_create_sysv_sema() -> mac_create_sysv_sem()
mac_cleanup_sysv_sema() -> mac_cleanup_sysv_sem()
Congruent changes are made to the policy interface to support this.
Obtained from: TrustedBSD Project
Sponsored by: SPAWAR, SPARTA
as this happens via thread_switchout(). I don't particularly like the
structure of the code here. We twice call out to thread code when
a thread is voluntarily switching. Once to thread_switchout() and once
to slot_fill(), while sched_4BSD does even more work which is redundant
to select another thread to use our remaining slice. This should be
simplified in the future, but for now I'm only going to fix the bug not
the bad design.
coded at 512 (BPF_MAXINSNS) to being tunable. This is useful for users
who wish to use complex or large bpf programs when filtering traffic.
For now we will default it to BPF_MAXINSNS. I have tested bpf programs
with well over 21,000 instructions without any problems.
Discussed with: phk
the tail (in tcp_sack_option()). The bug was caused by incorrect
accounting of the retransmitted bytes in the sackhint.
Reported by: Kris Kennaway.
Submitted by: Noritoshi Demizu.
o purge ath_initkeytable; it's not needed
o add multicast key search support for supporting multiple group keys
(disabled for now; requires updated hal)
o create keycache entry for stations using open auth so they get h/w
antenna management support
o add keycache -> node mapping table; eliminates mac-based lookup in
the net80211 layer
