talexander
/
freebsd_amp_hwpstate
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity
freebsd_amp_hwpstate/sys
History
Scott Long 88591e04af The run_filter() procedure is a means of working around DMA engine bugs in 
old/broken hardware.  Unfortunately, it adds cache pressure and possible
mispredicted branches to the fast path of the bus_dmamap_load collection of
functions.  Since it's meant for slow path exception processing, de-inline
it and allow its conditions to be pre-computed at tag_create time and thus
short-circuited at runtime.

While here, cut down on the size of _bus_dmamap_load_buffer() by pushing the
bounce page logic into a non-inlined function.  Again, this helps with
cache pressure and mispredicted branches.

According to the TSC, this shaves off a few cycles on average.  Unfortunately,
the data varies quite a bit due to interrupts and preemption, so it's hard to
get a good measurement.  Real world measurements of network PPS are welcomed.
A merge to amd64 and other arches is pending more testing.
 		2006-09-11 06:48:53 +00:00
..
amd64 Change futex lock from mutex to sx. Make futex_get atomic (protected by the 2006-09-09 16:25:25 +00:00
arm MFp4: first cut at getting I2C transfers working (generically). I'm 2006-09-07 21:53:28 +00:00
boot - Include <sys/reboot.h> to get the RB_* defines. 2006-09-05 19:28:03 +00:00
bsm Merge OpenBSM 1.0 alpha 10 changes into src/sys/bsm; comment spelling 2006-09-02 10:49:44 +00:00
cam Implement 'camcontrol reportluns'. This allows users to send the SCSI 2006-08-21 13:24:50 +00:00
coda
…
compat The Linux unlink syscall uses a different errno value when trying to unlink 2006-09-10 13:47:56 +00:00
conf Include agp_i810.c in amd64 AGP builds to get support for the Intel 915 Express 2006-09-05 16:55:13 +00:00
contrib Fix stateful filtering of loopback IPv6 traffic to an address not configured 2006-09-06 17:19:45 +00:00
crypto GCC 3.4.6 gets confused on this file and produces bogus warning. 2006-08-26 21:48:00 +00:00
ddb Fix two nits in the ps header that offset each other making them largely 2006-08-01 22:30:55 +00:00
dev Fix style(9) issues in the TSO specific changes. 2006-09-10 19:23:27 +00:00
fs while (0); -> while (0) in multi-line macros 2006-08-17 22:50:33 +00:00
gdb
…
geom Delay an orphan event if provider has still in-flight I/O requests. 2006-09-10 09:11:54 +00:00
gnu
…
i4b
…
i386 The run_filter() procedure is a means of working around DMA engine bugs in 2006-09-11 06:48:53 +00:00
ia64 Implement casuword32, compare and set user integer, thank Marcel Moolenarr 2006-08-28 02:28:15 +00:00
isa Eliminate one set of XBOX #ifdefs. The Xbox code just needs to set a 2006-08-09 23:47:38 +00:00
isofs/cd9660
…
kern New sockets created by incoming connections into listen sockets should 2006-09-10 17:08:06 +00:00
libkern Add strstr() function to the libkern. 2006-08-12 15:28:39 +00:00
modules Build linprocfs and linsysfs as modules on amd64. 2006-09-09 16:58:22 +00:00
net First step of TSO (TCP segmentation offload) support in our network stack. 2006-09-06 21:51:59 +00:00
net80211 More statistics fixups: 2006-08-10 06:04:00 +00:00
netatalk Since soisdisconnected() is no longer called in pru_detach(), call it 2006-08-05 14:14:34 +00:00
netatm Change semantics of socket close and detach. Add a new protocol switch 2006-07-21 17:11:15 +00:00
netgraph s/USBDEVNAME/device_get_nameunit/g 2006-09-07 23:38:09 +00:00
netinet make use of the host route's mtu for processing. This means we can now 2006-09-10 17:49:09 +00:00
netinet6 All multicast listeners on a port should get one copy of the packet. This 2006-09-07 18:44:54 +00:00
netipsec Fix build breakage from previous commit which confused key_abort and key_close. 2006-07-22 09:18:02 +00:00
netipx Change semantics of socket close and detach. Add a new protocol switch 2006-07-21 17:11:15 +00:00
netkey With exception of the if_name() macro, all definitions in net_osdep.h 2006-08-04 21:27:40 +00:00
netnatm Change semantics of socket close and detach. Add a new protocol switch 2006-07-21 17:11:15 +00:00
netncp - Fix ncp_poll() to not panic if the socket doesn't have any pending data. 2006-08-03 15:31:52 +00:00
netsmb Fix misalignment bugs caused by invalid type casts of pointers 2006-08-22 03:05:51 +00:00
nfs
…
nfs4client
…
nfsclient Fix for a deadlock triggered by a 'umount -f' causing a NFS request to never 2006-08-29 22:00:12 +00:00
nfsserver - Add a new function nfsrv_destroycache() to tear down the server request 2006-08-01 16:27:14 +00:00
opencrypto
…
pc98 Fix style nits. No md5 changes in .o's. ;-) 2006-09-08 21:46:01 +00:00
pccard
…
pci Add support for another ATI IGP 340M (RS200M) AGP bridge. 2006-09-01 02:22:17 +00:00
posix4
…
powerpc In cpu_set_user_tls(), properly set the thread pointer. It is 0x7000 2006-09-01 06:05:40 +00:00
rpc
…
security Add struct msg to the forwarded declared data structures in mac_policy.h. 2006-09-09 16:35:44 +00:00
sparc64 Do as the USII CPU manual suggests and leave interrupts enabled 2006-09-03 21:20:21 +00:00
sys Add struct msg to the forwarded declared data structures in mac_policy.h. 2006-09-09 16:35:44 +00:00
tools
…
ufs While checking for update of snapshot file in the ffs_copyonwrite, 2006-08-21 17:20:19 +00:00
vm Make vm_page_release_contig() static. 2006-09-03 22:24:08 +00:00
Makefile Don't need to special case arm here anymore 2006-08-10 06:29:43 +00:00