| Age | Commit message (Collapse) | Author |
|---|
|
Not crashing on 'chdev &' is important.
|
|
|
|
The process group id is essentially a unique id
of the namespace but it was never well documented
nor is it used by any program.
|
|
#c/reboot is a write only file
#c/sysstat should not be writable by everyone (write resets counters)
|
|
|
|
|
|
|
|
|
|
|
|
|
|
the "halt" command written to /dev/reboot just causes the
machine to crash... its also undocumented... removing it.
--
cinap
|
|
the kernels custom rand() and nrand() functions where not working
as specified in rand(2). now we just use libc's rand() and nrand()
functions but provide a custom lrand() impelmenting the xoroshiro128+
algorithm as proposed by aiju.
|
|
this code isnt time critical and process TReal delta can become
very long, so use tk2ms() which is less prone to overflow.
|
|
|
|
|
|
when fd 2 (stderr) points to a mount channel, dont
cause protocol confusion by dumping error strings
into it.
|
|
|
|
cpus on pc64
|
|
introduce cpushutdown() function that does the common
operation of initiating shutdown, returning once all
cpu's got the message and are about to shutdown. this
avoids duplicated code which isnt really machine specific.
automatic reboot on panic only when *debug= is not set
and the machine is a cpu server or has no display,
otherwise just hang.
|
|
|
|
alexchandel got the kernel to crash with divide error
on qemu 2.1.2/macosx at this location. probably
caused by perfticks()/tsc being wrong or accounttime()
not having been called yet from timer interrupt yet for
some reason.
|
|
Lock
make the Page stucture less than half its original size by getting rid of
the Lock and the lru.
The Lock was required to coordinate the unchaining of pages that where
both cached and on the lru freelist.
now pages have a single next pointer that is used for palloc.head
freelist xor for page cache hash chains in Image.pghash[].
cached pages are not on the freelist anymore, but will be reclaimed
from images by the pager when the freelist runs out of pages.
each Image has its own 512 hash chains for cached page lookup. That is
2MB worth of pages and there should be no collisions for most text images.
page reclaiming can be done without holding palloc.lock as the Image is
the owner of the page hash chains protected by the Image's lock.
reclaiming Image structures can be done quickly by only reclaiming pages from
inactive images, that is images which are not currently in use by segments.
the Ref structure has no Lock anymore. Only a single long that is atomically
incremented or decremnted using cmpswap().
there are various other changes as a consequence code. and lots of pikeshedding,
sorry.
|
|
|
|
|
|
this makes it consistent with the manual again.
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
