Adjust r322633 to only apply to libexec/rtld-elf, and not usr.bin/ldd,
when running build32/install32
This unbreaks installing usr.bin/ldd as ldd32 when NO_RTLD is defined.
MFC with: r322633
Eliminate duplication of the pmap and pv list unlock operations in
pmap_enter() by implementing a single return path. Otherwise, the
duplication will only increase with the upcoming support for psind == 1.
Extract the innermost loop of pmap_remove() out into its own function,
pmap_remove_ptes(). (This new function will also be used by an upcoming
change to pmap_enter() that adds support for psind == 1 mappings.)
Add support for pmap_enter(..., psind=1) to the amd64 pmap. In other words,
add support for explicitly requesting that pmap_enter() create a 2MB page
mapping. (Essentially, this feature allows the machine-independent layer to
create superpage mappings preemptively, and not wait for automatic promotion
to occur.)
Export pmap_ps_enabled() to the machine-independent layer.
Add a flag to pmap_pv_insert_pde() that specifies whether it should fail or
reclaim a PV entry when one is not available.
Refactor pmap_enter_pde() into two functions, one by the same name, that is
a general-purpose function for creating PDE PG_PS mappings, and another,
pmap_enter_2mpage(), that is used to prefault 2MB read- and/or execute-only
mappings for execve(2), mmap(2), and shmat(2).
Generalize vm_page_ps_is_valid() to support testing other predicates on
the (super)page, renaming the function to vm_page_ps_test().
In vm_page_ps_test(), always check that the base pages within the specified
superpage all belong to the same object. To date, that check has not been
needed, but upcoming changes require it.
Style-only change: Consistently use the variable name "pdpg" throughout
this file. Previously, half of the pointers to a vm_page being used as
a page directory page were named "pdpg" and the rest were named "mpde".
Optimize vm_page_try_to_free(). Specifically, the call to pmap_remove_all()
can be avoided when the page's containing object has a reference count of
zero. (If the object has a reference count of zero, then none of its pages
can possibly be mapped.)
Address nearby style issues in vm_page_try_to_free(), and change its
return type to "bool".
Optimize vm_object_page_remove() by eliminating pointless calls to
pmap_remove_all(). If the object to which a page belongs has no
references, then that page cannot possibly be mapped.
Modify blst_leaf_alloc to take only the cursor argument.
Modify blst_leaf_alloc to find allocations that cross the boundary between
one leaf node and the next when those two leaves descend from the same
meta node.
Update the hint field for leaves so that it represents a bound on how
large an allocation can begin in that leaf, where it currently represents
a bound on how large an allocation can be found within the boundaries of
the leaf.
The first phase of blst_leaf_alloc currently shrinks sequences of
consecutive 1-bits in mask until each has been shrunken by count-1 bits,
so that any bits remaining show where an allocation can begin, or until
all the bits have disappeared, in which case the allocation fails. This
change amends that so that the high-order bit is copied, as if, when the
last block was free, it was followed by an endless stream of free
blocks. It also amends the early stopping condition, so that the shrinking
of 1-sequences stops early when there are none, or there is only one
unbounded one remaining.
The search for the first set bit is unchanged, and the code path
thereafter is mostly unchanged unless the first set bit is in a position
that makes some of those copied sign bits matter. In that case, we look
for a next leaf, and at what blocks it can provide, to see if a
cross-boundary allocation is possible.
The hint is updated on a successful allocation that clears the last bit,
but it not updated on a failed allocation that leaves the last bit
set. So, as long as the last block is free, the hint value for the leaf is
large. As long as the last block is free, and there's a next leaf, a large
allocation can begin here, perhaps. A stricter rule than this would mean
that allocations and frees in one leaf could require hint updates to the
preceding leaf, and this change seeks to leave the freeing code
unmodified.
Define BLIST_BMAP_MASK, and use it for bit masking in blst_leaf_free and
blist_leaf_fill, as well as in blst_leaf_alloc.
Correct a panic message in blst_leaf_free.
Revert tcpdump to using the source manpage instead of having a copy here.
This helps future maintainability of tcpdump so we don't forget to update
the manpage (like we have previously).
on the covered vnode
As long as mnt_ref is not zero there can be a consumer that might try
to access mnt_vnodecovered. For this reason the covered vnode must not
be freed until mnt_ref goes to zero.
So, move the release of the covered vnode to vfs_mount_destroy.
Make fsck_y_enable default to passing pass -R to fsck_ffs(8) in addition
to -y. To me, fsck_y_enable means "try as hard as possible", and without
-R, it... well, doesn't.
Fix "mount -uw /" when the filesystem type doesn't match.
This basically makes "mount -uw /" work when the filesystem
mounted on / is NFS, but the one configured in fstab(5) is UFS,
which can happen when you forget to modify fstab.
Note that the whole special case ("else if (argv[0][0] == '/'")
is probably not needed anyway. I'll take a look at removing it
altogether; for now this is a minimally intrusive fix.
Reflect realtime and idle priorities in ps(1) state flags, same like
we do for the usual nice values. It could be argued that they should
use another set of indicators, since the underlying mechanism is
different, but they match the description in the manual page, and so
I think it's ok to not overcomplicate things.
PR: 81757
Improve the ktrace(1) man page to make it slightly more obvious that there
are _two_ options that control its behaviour wrt child processes; slightly
improve the example[1], and add Xrefs.
Make root_mount_rel(9) ignore NULL arguments, like it used to before r313351.
It would be better to fix API consumers to not pass NULL there - most of them,
such as gmirror, already contain the neccessary checks - but this is easier
and much less error-prone.
One known user-visible result is that it fixes panic on a failed "graid label".
This brings the CloudABI code more or less in sync with HEAD.
r321514:
Upgrade to the latest sources generated from the CloudABI specification.
The CloudABI specification has had some minor changes over the last half
year. No substantial features have been added, but some features that
are deemed unnecessary in retrospect have been removed:
- mlock()/munlock():
These calls tend to be used for two different purposes: real-time
support and handling of sensitive (cryptographic) material that
shouldn't end up in swap. The former use case is out of scope for
CloudABI. The latter may also be handled by encrypting swap.
Removing this has the advantage that we no longer need to worry about
having resource limits put in place.
- SOCK_SEQPACKET:
Support for SOCK_SEQPACKET is rather inconsistent across various
operating systems. Some operating systems supported by CloudABI (e.g.,
macOS) don't support it at all. Considering that they are rarely used,
remove support for the time being.
- getsockname(), getpeername(), etc.:
A shortcoming of the sockets API is that it doesn't allow you to
create socket(pair)s, having fake socket addresses associated with
them. This makes it harder to test applications or transparently
forward (proxy) connections to them.
With CloudABI, we're slowly moving networking connectivity into a
separate daemon called Flower. In addition to passing around socket
file descriptors, this daemon provides address information in the form
of arbitrary string labels. There is thus no longer any need for
requesting socket address information from the kernel itself.
This change also updates consumers of the generated code accordingly.
Even though system calls end up getting renumbered, this won't cause any
problems in practice. CloudABI programs always call into the kernel
through a kernel-supplied vDSO that has the numbers updated as well.
Obtained from: https://github.com/NuxiNL/cloudabi
r322885:
Sync CloudABI compatibility against the latest upstream version (v0.13).
With Flower (CloudABI's network connection daemon) becoming more
complete, there is no longer any need for creating any unconnected
sockets. Socket pairs in combination with file descriptor passing is all
that is necessary, as that is what is used by Flower to pass network
connections from the public internet to listening processes.
Remove all of the kernel bits that were used to implement socket(),
listen(), bindat() and connectat(). In principle, accept() and
SO_ACCEPTCONN may also be removed, but there are still some consumers
left.
Obtained from: https://github.com/NuxiNL/cloudabi
r323015:
Complete the CloudABI networking refactoring.
Now that all of the packaged software has been adjusted to either use
Flower (https://github.com/NuxiNL/flower) for making incoming/outgoing
network connections or can have connections injected, there is no longer
need to keep accept() around. It is now a lot easier to write networked
services that are address family independent, dual-stack, testable, etc.
Remove all of the bits related to accept(), but also to
getsockopt(SO_ACCEPTCONN).
r323177:
Merge pipes and socket pairs.
Now that CloudABI's sockets API has been changed to be addressless and
only connected socket instances are used (e.g., socket pairs), they have
become fairly similar to pipes. The only differences on CloudABI is that
socket pairs additionally support shutdown(), send() and recv().
To simplify the ABI, we've therefore decided to remove pipes as a
separate file descriptor type and just let pipe() return a socket pair
of type SOCK_STREAM. S_ISFIFO() and S_ISSOCK() are now defined
identically.
r324007:
mountd: Replace malloc+strcpy to strdup
Reviewed by: bapt
Sponsored by: Gandi.net
Differential Revision: https://reviews.freebsd.org/D12503
r324012:
mountd: Remove unneeded cast
Reported by: kib
X MFC With: r324007
r324014:
mountd: Avoid memory leak by freeing dp_dirp
Introduced in r324007, the data alloced by strdup was never free'ed.
While here, remove cast to caddr_t when freeing dp.
Reported by: bde
X MFC With: r324007
man(1): silent the output of mandoc when testing
This reduce the spam a user may face when mandoc tries to
figure out if it can renders a manpage or fallback on groff(1)
Reported by: bdrewery
on system with more than 80K ZFS filesystems, and followups
r323433: MFV r323110: 8558 lwp_create() returns EAGAIN on system with more than 80K ZFS filesystems
r323793: MFV r323792: 8602 remove unused "dp_early_sync_tasks" field from "dsl_pool" structure
r323915: MFV r323914: 8661 remove "zil-cw2" dtrace probe
Fix bogus FREAD with NFSV4OPEN_ACCESSREAD. No functional change.
The code in nfscl_doflayoutio() bogusly used FREAD instead of
NFSV4OPEN_ACCESSREAD. Since both happen to be defined as "1", this
worked and the patch doesn't result in a functional change.
Found by inspection during development of Flex File Layout support.
private data leads to kernel panic. Fix a race with per-node
read-mostly lock and refcounting for a hook.
PR: 220076
Tested by: peixoto.cassiano
Approved by: mav (mentor)
Relnotes: yes
Differential Revision: https://reviews.freebsd.org/D12435
Since the page "frame" doesn't belong to a vm object, it can't be paged
out. Since it can't be paged out, it is never actually enqueued in a
paging queue. Nonetheless, passing PQ_INACTIVE to vm_page_unwire()
creates the appearance that the page "frame" is being enqueued in the
inactive queue. As of r288122, we can avoid this false impression by
passing PQ_NONE.
Modernize the use of vm_page_unwire(). Since r288122, vm_page_unwire()
has returned TRUE when the wire count transitions to zero, eliminating
the need for callers to inspect the page's wire count.
I overlooked the fact that that ZIO_IOCTL_PIPELINE does not include
ZIO_STAGE_VDEV_IO_DONE stage. We do allocate a struct bio for an ioctl
zio (a disk cache flush), but we never freed it.
This change splits bio handling into two groups, one for normal
read/write i/o that passes data around and, thus, needs the abd data
tranform; the other group is for "data-less" i/o such as trim and cache
flush.
PR: 222288
It is reported that the default value of 4KB results in a substantial
memory use overhead (at least, on some configurations). Using 1KB seems
to reduce the overhead significantly.
PR: 222377
r321444:
Remove ${MTREE} and leverage etc/mtree/Makefile instead with
"make distribution".
This also fixes the fact that BSD.debug.dist was being installed if/when
${MK_DEBUG_FILES} != "no" before this commit.
r321446:
Unconditionally install etc/mtree/BSD.debug.dist again
r279248 unconditionally installed BSD.debug.dist for ease-of-developer-use.
Restore the previous behavior.
While here, add a comment to note that this is intentional to avoid accidental
future removal.
MFC with: r321444
Respect MK_TCSH with build-tools and native-xtools
This helps reduce the WORLDTMP footprint slightly.
Based on a patch I submitted 5 years ago to GNATS.
PR: 174051
Relnotes: yes (anyone who cross-builds with MK_TCSH=yes will run into
build failures if the host doesn't have tcsh(1))
Reminded by: Fabian Keil <[email protected]>
Enji Cooper