linux/include
Daniel Borkmann a5b6846f9e rhashtable: kill ht->shift atomic operations
Commit c0c09bfdc4 ("rhashtable: avoid unnecessary wakeup for worker
queue") changed ht->shift to be atomic, which is actually unnecessary.

Instead of leaving the current shift in the core rhashtable structure,
it can be cached inside the individual bucket tables.

There, it will only be initialized once during a new table allocation
in the shrink/expansion slow path, and from then onward it stays immutable
for the rest of the bucket table liftime.

That allows shift to be non-atomic. The patch also moves hash_rnd
management into the table setup. The rhashtable structure now consumes
3 instead of 4 cachelines.

Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Cc: Ying Xue <ying.xue@windriver.com>
Acked-by: Thomas Graf <tgraf@suug.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-03-12 23:02:30 -04:00
..
acpi
asm-generic
clocksource
crypto
drm drm/ttm: device address space != CPU address space 2015-03-05 09:04:39 +10:00
dt-bindings
keys
kvm
linux rhashtable: kill ht->shift atomic operations 2015-03-12 23:02:30 -04:00
math-emu
media
memory
misc
net inet: introduce ireq_family 2015-03-12 22:58:13 -04:00
pcmcia
ras
rdma
rxrpc
scsi
soc
sound
target Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending 2015-02-21 13:21:19 -08:00
trace
uapi ipv6: expose RFC4191 route preference via rtnetlink 2015-03-11 23:28:09 -04:00
video OMAPDSS: fix regression with display sysfs files 2015-02-26 10:23:15 +02:00
xen x86/xen: allow privcmd hypercalls to be preempted 2015-02-23 16:30:24 +00:00
Kbuild