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freebsd-skq/sys
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Colin Percival 0b4d5eb8fd Replace a pair of 8-bit writes to VGA memory with a single 16-bit write. 
The VGA "text mode" buffer has a pair of bytes for each character: One
byte for the character symbol, and an "attribute" byte encoding the
foreground and background colours.  When updating the screen, we were
writing these two bytes separately.

On some virtualized systems, every write results in a glyph being redrawn
into a (graphical) virtual screen; writing these two bytes separately
results in twice as much work being done to draw characters, whereas if
we perform a single 16-bit write instead, the character only needs to be
redrawn once.

On an EC2 c5.4xlarge instance, this change cuts 1.30s from the kernel boot,
speeding it up from 8.90s to 7.60s.

MFC after:	1 week
2018-08-07 08:33:40 +00:00
..
amd64 efirt: Don't enter EFI context early, convert addrs to KVA instead 2018-08-04 21:41:10 +00:00
arm Default to armv5te in LINT on arm. This should fix building LINT there. 2018-08-06 14:40:45 +00:00
arm64 efirt: Don't enter EFI context early, convert addrs to KVA instead 2018-08-04 21:41:10 +00:00
bsm
cam For the dynamic I/O scheduler, make the TRIM stuff also count against 2018-07-26 22:55:51 +00:00
cddl Reduce taskq and context-switch cost of zio pipe 2018-08-03 02:16:45 +00:00
compat Implement current_work() function in the LinuxKPI. 2018-08-06 10:48:20 +00:00
conf Remove jedec_ts(4) 2018-08-01 08:24:34 +00:00
contrib Remove redundant and incorrect default definition of AF_INET6. AF_INET6 2018-08-07 07:12:59 +00:00
crypto libmd: Always erase context in _Final method, and when doing 2018-07-20 07:01:28 +00:00
ddb Extend show proc with reaper, sigparent, and vmspace information 2018-05-25 13:59:48 +00:00
dev Replace a pair of 8-bit writes to VGA memory with a single 16-bit write. 2018-08-07 08:33:40 +00:00
dts Remove Atmel AT91RM9200 and AT91SAM9 support. 2018-07-27 18:28:22 +00:00
fs Copy all bits of a file handle in case there is padding in the structure. 2018-08-05 19:21:50 +00:00
gdb
geom OpenCrypto: Convert sessions to opaque handles instead of integers 2018-07-18 00:56:25 +00:00
gnu dts: Update our copy to Linux 4.17 2018-06-14 07:12:10 +00:00
i386 Add pmap_is_valid_memattr(9). 2018-08-01 18:45:51 +00:00
isa
kern Swap in WKILLED processes. 2018-08-04 20:45:43 +00:00
kgssapi OpenCrypto: Convert sessions to opaque handles instead of integers 2018-07-18 00:56:25 +00:00
libkern Sync strlcpy with userland version, again 2018-06-21 17:35:13 +00:00
mips Add pmap_is_valid_memattr(9). 2018-08-01 18:45:51 +00:00
modules uep(4): add evdev support 2018-08-05 11:14:13 +00:00
net pf: Increase default hash table size 2018-08-05 13:54:37 +00:00
net80211 net80211: Fix ifdetach w/o ifattach, small whitespace cleanup 2018-07-10 23:30:19 +00:00
netgraph Use if_tunnel_check_nesting() for ng_iface(4). 2018-08-03 22:55:58 +00:00
netinet Address concerns about CPU usage while doing TCP reassembly. 2018-08-06 17:36:57 +00:00
netinet6 Add a dtrace provider for UDP-Lite. 2018-07-31 22:56:03 +00:00
netipsec Use the new VNET_DEFINE_STATIC macro when we are defining static VNET 2018-07-24 16:35:52 +00:00
netpfil Use the new VNET_DEFINE_STATIC macro when we are defining static VNET 2018-07-24 16:35:52 +00:00
netsmb Make timespecadd(3) and friends public 2018-07-30 15:46:40 +00:00
nfs Switch RIB and RADIX_NODE_HEAD lock from rwlock(9) to rmlock(9). 2018-06-16 08:26:23 +00:00
nfsclient
nfsserver
nlm
ofed Only NULL check the VNET pointer when VIMAGE is enabled in ibcore. 2018-07-31 11:23:44 +00:00
opencrypto Make timespecadd(3) and friends public 2018-07-30 15:46:40 +00:00
powerpc Add pmap_is_valid_memattr(9). 2018-08-01 18:45:51 +00:00
riscv Return ENAMETOOLONG if the latest copied character 2018-08-03 16:44:56 +00:00
rpc Set SO_SNDTIMEO in the client side krpc when CLSET_TIMEOUT is done. 2018-07-20 12:03:16 +00:00
security Require that MAC label buffers be able to store a non-empty string. 2018-08-01 03:46:07 +00:00
sparc64 Add pmap_is_valid_memattr(9). 2018-08-01 18:45:51 +00:00
sys Make the system C11 atomics headers fully compatible with external GCC. 2018-08-06 23:51:08 +00:00
teken teken: Fix sequences header which was crossing the 80-col boundary 2018-05-29 08:41:44 +00:00
tests epoch_test: fix compile 2018-07-15 00:31:17 +00:00
tools
ufs Put in place the framework for consolodating contiguous blocks into 2018-08-06 21:09:11 +00:00
vm Swap in WKILLED processes. 2018-08-04 20:45:43 +00:00
x86 Verify that each frame pointer lies within the thread's kstack. 2018-08-03 02:51:37 +00:00
xdr
xen xen: add missing file from r336474 2018-07-19 10:14:52 +00:00
Makefile