Henrik Rydberg 468de4793b Input: Send events one packet at a time ... On heavy event loads, such as a multitouch driver, the irqsoff latency can be as high as 250 us. By accumulating a frame worth of data before passing it on, the latency can be dramatically reduced. As a side effect, the special EV_SYN handling can be removed, since the frame is now atomic. This patch adds the events() handler callback and uses it if it exists. The latency is improved by 50 us even without the callback. Change-Id: Iebd9b1868ae6300a922a45b6d104e7c2b38e4cf5 Cc: Daniel Kurtz <djkurtz@chromium.org> Tested-by: Benjamin Tissoires <benjamin.tissoires@enac.fr> Tested-by: Ping Cheng <pingc@wacom.com> Tested-by: Sedat Dilek <sedat.dilek@gmail.com> Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> Signed-off-by: Henrik Rydberg <rydberg@euromail.se> Input: Improve the events-per-packet estimate The events-per-packet estimate has so far been used by MT devices only. This patch adjusts the packet buffer size to also accomodate the KEY and MSC events. Keyboards normally send one or two keys at a time. MT devices normally send a number of button keys along with the MT information. The buffer size chosen here covers those cases, and matches the default buffer size in evdev. Since the input estimate is now preferred, remove the special input-mt estimate. Reviewed-and-tested-by: Ping Cheng <pingc@wacom.com> Tested-by: Benjamin Tissoires <benjamin.tissoires@enac.fr> Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> Signed-off-by: Henrik Rydberg <rydberg@euromail.se> Signed-off-by: franciscofranco <franciscofranco.1990@gmail.com> Signed-off-by: flar2 <asegaert@gmail.com>		2019-03-16 12:46:33 +01:00
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acpi
asm-generic	allow O_TMPFILE to work with O_WRONLY	2018-12-07 22:28:48 +04:00
crypto
drm
keys
linux	Input: Send events one packet at a time	2019-03-16 12:46:33 +01:00
math-emu
media
misc
mtd
net	netfilter updates for net-next (batch 3)	2019-01-03 13:59:01 +01:00
pcmcia
rdma
rxrpc
scsi
sound
target
trace
video
xen
Kbuild