userland preemption directly from hardclock() via sched_clock() when a
thread uses up a full quantum instead of using a periodic timeout to cause
a userland preemption every so often. This fixes a potential deadlock
when IPI_PREEMPTION isn't enabled where softclock blocks on a lock held
by a thread pinned or bound to another CPU. The current thread on that
CPU will never be preempted while softclock is blocked.
Note that ULE already drives its round-robin userland preemption from
sched_clock() as well and always enables IPI_PREEMPT.
MFC after: 1 week
__MAKE_SHELL variable. This feature isn't supposed to be in wide
use, but it's needed now to make `installworld' independent of the
stock binaries and libs so that radical ABI changes can go in safely.
Reviewed by: ru
a private softc list is needed neither for tracking clones in general
nor for destroying all clones before the module unload -- if_clone
takes care of all that. (Note that some other interface drivers do
need a softc list to be able to scan it for their private purposes.)
a versatile emergency tool:
o sed(1) as a multi-purpose text filter -- can do grep's job and much more.
o head(1), tail(1), and tee(1) as idiomatic text filters.
o mt(1) to control tape drives (PR misc/98383).
o chown(8) aka chgrp(8) to complement the ch* subset.
o pkill(1) aka pgrep(1) to control running processes easily and thus to be
able to recover from a serious problem or a fatal typo in an otherwise live
system w/o a reboot. (It also deserves adding to rescue(8) for its having
triggered a latent bug in crunchgen(1), but we had better add a regression
test for that. :-)
The resulting change in rescue(8) size has the following order of magnitude
on i386: 3787656 - 3727872 = 59784, i.e. just a tad.
Discussed on: -hackers (I seem to have wearied all opponents :-)
PR: misc/98383
noatime, noexec, suiddir, nosuid, nosymfollow, union,
noclusterr, noclusterw, multilabel, acls, force, update,
async. These options correspond to MOPT_STDOPTS, MOPT_FORCE, MOPT_UPDATE,
and MOPT_ASYNC.
Currently, mount_nfs converts these "-o" options from strings
to MNT_ flags via getmntopts(),
and passes the flags from userspace to the kernel.
This change will allow us in future to pass these mount options
as strings directly to the kernel via nmount() when doing NFS mounts.
argv[1] to mimic crt0 behaviour. Do the job by a direct assignment
to __progname in order to stay compatible with NetBSD, whose
setprogname() is a deliberate no-op.
The reason for this change is that some programs (usually those
imported from NetBSD) use getprogname() to distinguish between their
aliases. (See pkill aka pgrep for example.)
This change can be useful, and applicable, to NetBSD, too.
out instead of returning an error.
(1) This makes the behavior consistent with mount(2).
(2) This makes update mounts on the root file system work properly.
(3) The explicit checks for MNT_ROOTFS in src/sbin/fsck_ffs/main.c
and src/usr.sbin/mountd/mountd.c which were put in to
eliminate errors during update mounts on the root file system
can be removed.
The only place were MNT_ROOTFS can be validly set
is inside the kernel, i.e. with vfs_mountroot_try().
Reviewed by: phk
MFC after: 3 days
handle to the PCI device_t if the ACPI device_t is already attached to a
driver. This happens on the Tablet TC1000 which for some reason includes
two PCI-ISA bridges and treats the second bridge as an ACPI system resource
device.
Reviewed by: njl (a while ago)
MFC after: 3 days
that would have an offset beyond the end of the target object. Such
pages should remain in the source object.
MFC after: 3 days
Diagnosed and reviewed by: Kostik Belousov
Reported and tested by: Peter Holm
defined. This lets each boot program choose which version of cgbase() it
wants to use rather than forcing ufsread.c to have that knowledge.
MFC after: 1 week
Discussed with: imp
saves about 500 bytes in the boot code. While the AT91RM9200 has 12k
of space for the boot loader, which is more than i386's 8k, the code
generated by gcc is a bit bigger.
I've had this in p4 for about two years now.
we move towards netinet as a pseudo-object for the MAC Framework.
Rename 'mac_create_mbuf_linklayer' to 'mac_mbuf_create_linklayer' to
reflect general object-first ordering preference.
Sponsored by: SPARTA (original patches against Mac OS X)
Obtained from: TrustedBSD Project, Apple Computer
pkg_version tried to open instead of just "INDEX" to make the actual
problem more clear (e.g. missing INDEX-8).
MFC after: 3 days
Reviewed by: portmgr (pav)
