sockets:
1) A sender sends SCM_CREDS message to a reciever, struct cmsgcred;
2) A reciever sets LOCAL_CREDS socket option and gets sender
credentials in control message, struct sockcred.
Both methods use the same control message type SCM_CREDS with the
same control message level SOL_SOCKET, so they are indistinguishable
for the receiver. A difference in struct cmsgcred and struct sockcred
layouts may lead to unwanted effects.
Now for sockets with LOCAL_CREDS option remove all previous linked
SCM_CREDS control messages and then add a control message with
struct sockcred so the process specifically asked for the peer
credentials by LOCAL_CREDS option always gets struct sockcred.
PR: kern/90800
Submitted by: Andrey Simonenko
Regres. tests: tools/regression/sockets/unix_cmsg/
MFC after: 1 month
the description so we don't have to do any more queries. Disable the
event query code until it figured out since but it is similar to the
AEN detail so we should be able to get that working.
s/myri10ge/mxge/g replacement in the myri10ge files. A few contuation
lines were joined because of the regained columns.
- Hook the mxge driver back to the build.
I picked it up again. The scheduler is forked from ULE, but the
algorithm to detect an interactive process is almost completely
different with ULE, it comes from Linux paper "Understanding the
Linux 2.6.8.1 CPU Scheduler", although I still use same word
"score" as a priority boost in ULE scheduler.
Briefly, the scheduler has following characteristic:
1. Timesharing process's nice value is seriously respected,
timeslice and interaction detecting algorithm are based
on nice value.
2. per-cpu scheduling queue and load balancing.
3. O(1) scheduling.
4. Some cpu affinity code in wakeup path.
5. Support POSIX SCHED_FIFO and SCHED_RR.
Unlike scheduler 4BSD and ULE which using fuzzy RQ_PPQ, the scheduler
uses 256 priority queues. Unlike ULE which using pull and push, the
scheduelr uses pull method, the main reason is to let relative idle
cpu do the work, but current the whole scheduler is protected by the
big sched_lock, so the benefit is not visible, it really can be worse
than nothing because all other cpu are locked out when we are doing
balancing work, which the 4BSD scheduelr does not have this problem.
The scheduler does not support hyperthreading very well, in fact,
the scheduler does not make the difference between physical CPU and
logical CPU, this should be improved in feature. The scheduler has
priority inversion problem on MP machine, it is not good for
realtime scheduling, it can cause realtime process starving.
As a result, it seems the MySQL super-smack runs better on my
Pentium-D machine when using libthr, despite on UP or SMP kernel.
- Try hard to calculate a safe sp, so that the stack doesn't get smashed
while uncompressing or relocating the kernel.
- Bring in code needed to calculate the cacheline size etc, needed for
arm9_idcache_wbinv_all.
for CBUS-PNP cards there) by default, as there are no amd64 and sparc64
machines with ISA slots and which therefore could make use of this code
known to exist. For sparc64 this additionally allows to get rid of the
compat shims for in{b,w,l}()/out{b,w,l}() etc and the associated hacks.
OK'ed by: imp, peter
.//dir as /dir. Rather strip it only for the purpose of checking if the
directory path should be printed.
PR: 88813
Submitted by: Josh Elsasser
Patch from: NetBSD (cd.c rev 1.38)
MFC after: 2 weeks
The three most dangerous things in the world are a programmer with a
soldering iron, a hardware type with a program patch and a user with
an idea. -- The Wizardry Compiled by Rick Cook
and
Debugging is anticipated with distaste, performed with reluctance, and
bragged about forever. -- Button at the Boston Computer Museum
I wonder why people call me a cynic. ;-)
o Implement a bunch of sysctl's to report the information
that's now always reported. Mvoe reporting of that info
to bootverbose, but maybe it can go away entirely.
dev.ed.X.type: string name
dev.ed.X.TxMem: amount of memory used for tx side of the card
dev.ed.X.RxMem: amount of memory used for rx side of the card
dev.ed.X.Mem: Total amount of mem on card.
o Better comments about where NE-2000 (and clones) gets their MAC
address from.
the arm to compile without all the extras that don't appear, at least
not in the flavors of ARM I deal with. This helps us save about 100k.
If I've botched the available devices on a platform, please let me
know and I'll correct ASAP.
systems. Introduce a new sysctl "hw.acpi.disable_on_reboot" that allows
users to re-enable the old behavior in case it's needed for some systems.
We never disable in the power-off path.
Original approach submitted by Alexander Logvinov <abuse@akavia.ru> with
reworking by Jung-uk Kim and myself.
machine.c. The traditional condition was (pctcpu > 0 || SRUN), but the
negation of the condition logic (from select to skip) made this come
out as (pctcpu > 0 && SRUN), leading to a very erratic display, except
for purely CPU bound processes.
This has been discussed in the mail lists some time ago and I have used
top with this patch on my systems for more than a year without problems
(just forgot to commit it earlier, since my systems were all fixed ...).
