Alexei Starovoitov
a10423b87a
bpf: introduce BPF_MAP_TYPE_PERCPU_ARRAY map ...
Primary use case is a histogram array of latency
where bpf program computes the latency of block requests or other
events and stores histogram of latency into array of 64 elements.
All cpus are constantly running, so normal increment is not accurate,
bpf_xadd causes cache ping-pong and this per-cpu approach allows
fastest collision-free counters.
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-02-06 03:34:36 -05:00
Merge branches 'acpica', 'acpi-video' and 'acpi-fan'
2016-01-21 00:41:59 +01:00
Merge branch 'akpm' (patches from Andrew)
2016-01-21 12:32:08 -08:00
Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
2016-01-22 11:58:43 -08:00
drm/atomic-helper: Export framebuffer_changed()
2016-01-20 08:55:43 +08:00
ARM: SoC driver updates for v4.5
2016-01-20 18:42:30 -08:00
bpf: introduce BPF_MAP_TYPE_PERCPU_ARRAY map
2016-02-06 03:34:36 -05:00
tcp: fastopen: accept data/FIN present in SYNACK message
2016-02-06 03:11:59 -05:00
IB/mlx4: Enable send of RoCE QP1 packets with IP/UDP headers
2016-01-19 15:35:01 -05:00
Initial roundup of 4.5 merge window patches
2016-01-23 18:45:06 -08:00
ARM: SoC driver updates for v4.5
2016-01-20 18:42:30 -08:00
ALSA: timer: Introduce disconnect op to snd_timer_instance
2016-01-21 17:51:42 +01:00
Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending
2016-01-20 17:20:53 -08:00
This includes three minor fixes, mostly due to cut-and-paste issues.
2016-01-28 17:00:50 -08:00
bpf: introduce BPF_MAP_TYPE_PERCPU_ARRAY map
2016-02-06 03:34:36 -05:00
Merge branch 'for-4.5/drivers' of git://git.kernel.dk/linux-block
2016-01-21 18:19:38 -08:00
a10423b87a