freebsd: set mnt_time on the rootfs at mountroot time
FreeBSD's vfs_mountroot() will collect `mnt_time` from every filesystem
that we mounted and use the highest timestamp as a source for the system
time if we didn't get anything from an attached RTC.
Use the rrd mechanism added to gather up a notion of the latest time
and set it on mnt_time. If the timestamp db is empty, we just fallback
to the uberblock timestamp and hope that that is in the right ballpark.
Relevant: FreeBSD PR254058[0] reporting the problem downstream
[0] https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=254058
Reviewed-by: Alexander Motin <alexander.motin at TrueNAS.com>
Reviewed-by: Brian Behlendorf <behlendorf1 at llnl.gov>
Reviewed-by: Chris Longros <chris.longros at gmail.com>
Signed-off-by: Kyle Evans <kevans at FreeBSD.org>
Closes #18645
Add dbrrd_latest_time() to grab the latest timestamp in the db
Returns 0 if the database is empty, otherwise it returns the highest
value of the minutely db. dbrrd_add() will already enforce the property
that these are monotonically increasing, so we won't try to second-guess
it.
Reviewed-by: Alexander Motin <alexander.motin at TrueNAS.com>
Reviewed-by: Brian Behlendorf <behlendorf1 at llnl.gov>
Reviewed-by: Chris Longros <chris.longros at gmail.com>
Signed-off-by: Kyle Evans <kevans at FreeBSD.org>
Closes #18645
Constify some rrd_*() functions
These don't modify the db, so just constify them while we're in the
area.
Reviewed-by: Alexander Motin <alexander.motin at TrueNAS.com>
Reviewed-by: Brian Behlendorf <behlendorf1 at llnl.gov>
Reviewed-by: Chris Longros <chris.longros at gmail.com>
Signed-off-by: Kyle Evans <kevans at FreeBSD.org>
Closes #18645
RAIDZ: Optimize single data column writes
When a row contains only a single data column (one ashift-sized
block or 2-wide RAIDZ), P = Q = R = data mathematically. In this
case point all parity column ABDs at the data column ABD, skipping
both buffer allocation and parity generation.
It might be not very efficient to write so small blocks on RAIDZ,
but it is allowed and does happen. Skipping this allocation and
memory copy saves several percents of CPU time.
Reviewed-by: Brian Behlendorf <behlendorf1 at llnl.gov>
Reviewed-by: Rob Norris <rob.norris at truenas.com>
Signed-off-by: Alexander Motin <alexander.motin at TrueNAS.com>
Closes #18695
[Instrumentor] Add runtime examples: [1/N] A flop counter
This adds a instrumentor-tools folder into compiler RT to showcase
use cases of the instrumentor. The initial example is a program that,
via instrumentation, counts the number of flops performed. Call and
intrinsic support will follow after #198042.
Partially developped by Claude (AI), tested and verified by me.
uiomove_fault(): initialize save with ~0 when no flags are cleared
Reported by: markj
Fixes: 4c4195700249 ("sys: use curthread_pflags_set/restore to manage TDP_DEADLKTREAT for uio")
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
Revert "[LifetimeSafety] Fix liveness propagation for all origin flows (#205323)" (#205687)
Revert "[LifetimeSafety] Fix liveness propagation for all origin flows
(#205323)"
This reverts commit 8d2a578b2130742c8790f3dba5fb414962eafcd5.
Revert "[LifetimeSafety] Model GNU statement expressions (#204841)"
This reverts commit 361f3b24f2a8703eb7a32c1ae081f490888238f3.
[Instrumentor] Add subtype IDs to complement type IDs for vectors/arrays (#205466)
If the type of an argument passed to the instrumentation is a vector or
array, we still want to filter on the underlying type, and the
instrumentation might also need to know. Thus, we can now pass a subtype
ID, which is -1 except if it's a vector or array, then it's the element
type ID. Structs need to be handled differently.
gspell: forward icu dependency in bl3.mk
Seems it's needed:
meson.build:66:13: ERROR: Dependency lookup for gspell-1 with method 'pkg-config' failed: Could not generate cflags for gspell-1:
Merge tag 'rust-7.2-2' of git://git.kernel.org/pub/scm/linux/kernel/git/ojeda/linux
Pull rust addendum from Miguel Ojeda:
"A second, tiny pull request later in the merge window with a small
patch to simplify cross-tree development:
'kernel' crate:
- 'prelude' module: add 'zerocopy{,_derive}::IntoBytes'.
This will simplify using 'zerocopy' in several trees next cycle"
* tag 'rust-7.2-2' of git://git.kernel.org/pub/scm/linux/kernel/git/ojeda/linux:
rust: prelude: add `zerocopy{,_derive}::IntoBytes`
Merge tag 'rust-fixes-7.2' of git://git.kernel.org/pub/scm/linux/kernel/git/ojeda/linux
Pull rust fixes from Miguel Ojeda:
"Toolchain and infrastructure:
- Work around a 'rustc' bug by setting the 'frame-pointer' LLVM
module flag under 'CONFIG_FRAME_POINTER'.
The upcoming Rust 1.98.0 is fixed.
- Doctests: fix incorrect replacement pattern.
'kernel' crate:
- Mark 'Debug' impl as '#[inline]'"
* tag 'rust-fixes-7.2' of git://git.kernel.org/pub/scm/linux/kernel/git/ojeda/linux:
rust: Kbuild: set frame-pointer llvm module flag for CONFIG_FRAME_POINTER
rust: doctest: fix incorrect pattern in replacement
rust: bitfield: mark `Debug` impl as `#[inline]`
