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a529288d65
freebsd-dev/sys
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Hans Petter Selasky a529288d65 Optimise the DWC OTG host mode driver's transmit path: 
1) Use the TX FIFO empty interrupts to poll the transmit FIFO usage,
instead of using own software counters and waiting for SOF
interrupts. Assume that enough FIFO space is available to execute one
USB OUT transfer of any kind when the TX FIFO is empty.

2) Use the host channel halted event to asynchronously wait for host
channels to be disabled instead of waiting for SOF interrupts. This
results in less turnaround time for re-using host channels and at the
same time increases the performance.

The network transmit performance measured by "iperf" for the "RPi-B v1
2011/12" board, increased from 45MBit/s to 65Mbit/s after applying the
changes above.

No regressions seen using:
 - High Speed (BULK, CONTROL, INTERRUPT)
 - Full Speed (All transfer types)
 - Low Speed (Control and Interrupt)

MFC after:	1 month
Submitted by:	Daisuke Aoyama <aoyama@peach.ne.jp>
2015-07-16 16:08:40 +00:00
..
amd64 Revert inadvertent change to amd64/GENERIC. 2015-07-15 01:04:54 +00:00
arm Split out the arm and armv6 parts of atomic.h to new files. While here use 2015-07-16 13:33:03 +00:00
arm64 Fix KSTACK_PAGES issue when the default value was changed in KERNCONF 2015-07-16 10:46:52 +00:00
boot Add the Banana Pi DTS. 2015-07-07 19:01:54 +00:00
bsm
cam Create a dedicated function for ensuring that cdir and rdir are populated. 2015-07-11 16:22:48 +00:00
cddl vfs: implement v_holdcnt/v_usecount manipulation using atomic ops 2015-07-16 13:57:05 +00:00
compat Implement CloudABI's exec() call. 2015-07-16 07:05:42 +00:00
conf cxgbe(4): Update T4 and T5 firmwares to 1.14.2.0. 2015-07-14 08:02:05 +00:00
contrib Import the CloudABI datatypes and create a system call table. 2015-07-09 07:20:15 +00:00
crypto Complete the move that was started w/ r263218.. For some reason I 2015-07-11 03:12:34 +00:00
ddb Fix KSTACK_PAGES issue when the default value was changed in KERNCONF 2015-07-16 10:46:52 +00:00
dev Optimise the DWC OTG host mode driver's transmit path: 2015-07-16 16:08:40 +00:00
fs Check suspendability on the mountpoint returned by VOP_GETWRITEMOUNT. 2015-07-05 22:37:33 +00:00
gdb CALLOUT_MPSAFE has lost its meaning since r141428, i.e., for more than ten 2015-05-22 17:05:21 +00:00
geom Add a new option to gpart(8) to fix Lenovo BIOS boot issue 2015-07-15 02:23:55 +00:00
gnu The GNU Amlogic DTS files have some errors (e.g. bad register 2015-04-11 08:17:39 +00:00
i386 Fix KSTACK_PAGES issue when the default value was changed in KERNCONF 2015-07-16 10:46:52 +00:00
isa
kern fd: partially deduplicate fdescfree and fdescfree_remapped 2015-07-16 15:26:37 +00:00
kgssapi
libkern Remove checks for __ARM_EABI__, we only build for EABI now. 2015-07-09 21:02:40 +00:00
mips Populate hw.model with the CPU model information. 2015-07-14 05:14:10 +00:00
modules cxgbe(4): Update T4 and T5 firmwares to 1.14.2.0. 2015-07-14 08:02:05 +00:00
net * Address review (and add a bit myself). 2015-07-12 18:14:38 +00:00
net80211 Break out the current 802.11 software scan methods into an indirect table. 2015-06-08 02:35:43 +00:00
netgraph * Address review (and add a bit myself). 2015-07-12 18:14:38 +00:00
netinet Correct issue presented in r285051, 2015-07-09 16:28:36 +00:00
netinet6 Keep IPv6 address specified by IPV6_PKTINFO socket option in kernel 2015-07-03 19:01:38 +00:00
netipsec Summary: Fix LINT build. The names of the new AES modes were not 2015-07-10 02:23:50 +00:00
netnatm
netpfil assorted algorithmic fixes from Paolo Valente (one of my qfq coauthors): 2015-07-10 19:24:36 +00:00
netsmb
nfs Avoid closing unallocated socket in case socreate fails. 2015-02-28 20:30:29 +00:00
nfsclient Remove some oldnfs remnants. 2015-04-18 16:08:06 +00:00
nfsserver
nlm
ofed Fix broken implementation of "kvasprintf()" function by adding missing 2015-07-03 11:16:20 +00:00
opencrypto Fix XTS, and name things a bit better... 2015-07-14 07:45:18 +00:00
pc98 Spell crypto correctly. 2015-07-14 10:47:56 +00:00
powerpc Fix KSTACK_PAGES issue when the default value was changed in KERNCONF 2015-07-16 10:46:52 +00:00
rpc Remove hard limits on number of accepting NFS connections. 2015-04-07 10:25:27 +00:00
security fd: make 'rights' a manadatory argument to fget* functions 2015-07-05 19:05:16 +00:00
sparc64 Fix KSTACK_PAGES issue when the default value was changed in KERNCONF 2015-07-16 10:46:52 +00:00
sys Get rid of lim_update_thread and cred_update_thread. 2015-07-16 14:30:11 +00:00
teken
tools
ufs Move chdir/chroot-related fdp manipulation to kern_descrip.c 2015-07-11 16:19:11 +00:00
vm Add an initial NUMA affinity/policy configuration for threads and processes. 2015-07-11 15:21:37 +00:00
x86 Fix warnings about unused functions for UP build. 2015-07-16 12:16:42 +00:00
xdr
xen Garbage collect comments which related to the pre-r284296 support for a 2015-06-21 06:05:33 +00:00
Makefile Kill EoL whitespace. 2015-05-29 14:03:07 +00:00