resolved: rearrange DnsResourceRecord for better layout
The structure is rearranged to have less holes. Also fields in the union
are rearranged not to have holes (though most variants of the union still
have some padding at the end).
The full size does not decrease a lot, but the compiler should be able to
copy less bytes when it knows the specific type of the union.
Bitfields are dropped because they don't give any memory savings due to
alignment requirements (but would still require more complex to access).
The change from the this and previous commit:
/* size: 128, cachelines: 2, members: 13 */
/* sum members: 112, holes: 3, sum holes: 15 */
/* sum bitfield members: 2 bits, bit holes: 1, sum bit holes: 6 bits */
↓
/* size: 112, cachelines: 2, members: 13 */
/* sum members: 108, holes: 1, sum holes: 4 */
I occasionally do 'build/man/man systemd.directives' when working on man pages,
and it's annoying slow. By paralellizing the parsing of xml, we can make it a
bit faster.
This is still rather innefficient. Only the parsing part is serialized, xml is
still produced serially at the end, which is hard to avoid.
$ ninja -C build man/systemd.directives.xml
before:
8.20s user 0.21s system 99% cpu 8.460 total
8.33s user 0.18s system 98% cpu 8.619 total
8.72s user 0.19s system 98% cpu 9.019 total
after:
13.99s user 0.73s system 345% cpu 4.262 total
14.15s user 0.35s system 348% cpu 4.161 total
14.33s user 0.35s system 339% cpu 4.321 total
I.e. it uses almost twice as much cpu, but cuts the wallclock time down (on a
2-core/4-thread cpu) to about half too, which is an overall win if you're just
trying to render the man page.
The change from list and .append() to set and .add() is something that could
have been done before too, but it's noticable now. It cuts down on the
serialization/deserialization time (about .2s).
Simon Watts [Wed, 12 May 2021 21:22:39 +0000 (22:22 +0100)]
Add Microsoft Pro Intellimouse MOUSE_DPI to hwdb
- Internet specifications give 1600 DPI @ 1000Hz for this sensor
- Confirmed experimentally via `mouse-dpi-tool`
- vid, pid, and name match string from `mouse-dpi-tool`
resolved: be more careful with weird links with low MTUs
Apparently CAN links will show up in rtnetlink with very low MTUs. We
shouldn't consider them relevant if no IP is spoken over them, since
these MTUs are irrelevant for us then.
Hence, let's check if there's an address assigned to the link before
considering its MTU.
As additional safety net filter out MTUs smaller than the minimum DNS
packet size, too.
Finally, in case we don't find any suitable interface MTU, let's default
to 1500 as the generic Ethernet MTU.
This was a copy/paste mistae apparently, there's not "try_authtok" and
this was supposed to copy what Fedora uses, which uses "use_authtok"
correctly. Hence adjust this.
netlink,network: drop "const" from opaque object parameters in supposed-to-be-public APIs
This drops the "const" specifier from the opaque object parameters to
various functions in our API.
This effectively reverts #19292 and more.
Why drop this? Our public APIs should not leak too much information
about how stuff is implemented internally. In our public APIs we
shouldn't give too many guarantees we don#t want to necessarily keep.
Specifically: in many cases it makes sense that getters actually
generate/parse/allocate data on the fly, storing/caching the result
internally, to speed things up, do things lazily or to track memory
allocations so that they can be freed later. Doing this means we need to
change the objects, even though the getters are semantically a read
operation.
We want to retain the freedom that we can change things around
internally. By exposing the objects as "const" we remove a good chunk of
that, for little gain.
See sd_bus_creds_get_description() for a real example of a getter that
implicitly caches and thus modifies the relevant object.
This removes the "const" decorators from sd-dhcp and sd-netlink, two
APIs that we intend to make public eventually even though they still are
not, leaving us the chance to still fix this before it becomes set in
stone.
Yu Watanabe [Wed, 5 May 2021 13:46:44 +0000 (22:46 +0900)]
network: use request queue to configure addresses, routes, and nexthops
Why is this necessary? Several examples below.
- When a route sets prefsrc, then the address must be already assigned
(see issue #19285), and also it must be ready if IPv6.
- When a route or nexthop sets gateway, then the address must be reachable.
- When a route sets nexthop ID, then the corresponding nexthop must be
assigned.
- When a route sets multipath routes on another interface, then the
interface must exist and be ready to configure.
- When configuring address, the same address must not be under removing
(see issue #18108).
Etc,. etc,...
So, this makes all requests about addresses, routes, and nethops are once
stored in the queue, and will be processed when they are ready to configure.
Yu Watanabe [Sun, 9 May 2021 16:46:48 +0000 (01:46 +0900)]
tree-wide: refuse too long strings earlier in specifier_printf()
We usually call specifier_printf() and then check the validity of
the result. In many cases, validity checkers, e.g. path_is_valid(),
refuse too long strings. This makes specifier_printf() refuse such
long results earlier.
Moreover, unit_full_string() and description field in sysuser now
refuse results longer than LONG_LINE_MAX. config_parse() already
refuses the line longer than LONG_LINE_MAX. Hence, it should be ok
to set the same value as the maximum length of the resolved string.
core: don't accidentally unref a varlink connection twice
Let's make sure that our close handler unrefs a connection again that we
are already unreffing a few stack frames up by invalidating the pointer
first, and dropping the ref counter only after that.
In most of our codebase when we referenced "ipv4" and "ipv6" on the
right-hand-side of an assignment, we lowercases it (on the
left-hand-side we used CamelCase, and thus "IPv4" and "IPv6"). In
particular all across the networkd codebase the various "per-protocol
booleans" use the lower-case spelling. Hence, let's use lower-case for
SocketBindAllow=/SocketBindDeny= too, just make sure things feel like
they belong together better.
(This work is not included in any released version, hence let's fix this
now, before any fixes in this area would be API breakage)
zsien [Mon, 10 May 2021 07:42:54 +0000 (15:42 +0800)]
bootctl: same entry path check case-insensitive
Some motherboards convert the path to uppercase under certain circumstances
(e.g. after booting into the Boot Menu in the ASUS ROG STRIX B350-F GAMING).
howl [Mon, 10 May 2021 22:24:11 +0000 (00:24 +0200)]
hwdb: keyboard: D330 Touchpad toggle keymap
I have also seen that VIOS LTH17 has the exact same correction and it's also a SIPODEV composite hid device also through usb. In the D330 is a detachable keyboard. It's possible that a very generic way to apply this to at least affected sipodev keyboard could be found using the device ids, but needs info to do that and ensure all sipodev keyboard with the pertinent ids need it.
Signed-off-by: David Santamaría Rogado <howl.nsp@gmail.com>
unit-def: ensure UnitType enum fits any errno value
This is a follow-up for #19514 which changed unit_name_to_instance() to
return ENOMEM as a UnitType enum, even though the enum didn't
necessarily have range for that.
Let's extend the range explicitly, so that we can cover the full errno
range in it.
This fixes some line-break confusion introduced by #11199
(c6cecb744b53561efd329309af7d02a3f9979ed1). It also restores a test with
GID_INVALID that was dropped, presumably by accident.
FLAGS_SET() checks if *all* the bits are set. In this case we want to check
if *any* are. FLAGS_SET() was added in cde2f8605e0c3842f9a87785dd758f955f2d04ba,
but not a bug then yet, because with just one bit, both options are equivalent.
But when more bits were added later, this stopped being correct.
Fixup for cde2f8605e0c3842f9a87785dd758f955f2d04ba. Use PIN+PV because the
status quo ante was that we turned off "uv" and left "up" and "clientPin" in
its default values, which with yubikeys (i.e. the most popular hardware) meant
both "up" and "clientPin" were enabled by default.
userdb: initialize .synthesize_root/.synthesize_nobody in generic code
Let's initialize this at the same place for any iterator allocated. (Yes
not all types of iterator objects need this, but it's still nice to
share this trivial code at one place).
userdb: return ESRCH if we didn't find a single varlink service
Clearly communicate to callers that we didn't find a single varlink
service, when a lookup is attempted. Note that the fallback's to NSS,
drop-ins and synthesis might eat up this error again, but we should
really make this case reasonably recognizable, in particular as our
various tools already handle this condition correctly and print a nice
message then.
projects / thirdparty / systemd.git / log
