lockf: Avoid spinning when operating on an fd
When operating on a file descriptor, acquire_lock() would ignore the
flags argument and always operate in non-blocking mode, resulting in
unnecessary busy-looping.
PR: 294832
MFC after: 1 week
Reviewed by: markj
Differential Revision: https://reviews.freebsd.org/D56722
(cherry picked from commit d90513ea85693da0ca5955173609f4e81e38ae16)
lockf: Avoid spinning when operating on an fd
When operating on a file descriptor, acquire_lock() would ignore the
flags argument and always operate in non-blocking mode, resulting in
unnecessary busy-looping.
PR: 294832
MFC after: 1 week
Reviewed by: markj
Differential Revision: https://reviews.freebsd.org/D56722
(cherry picked from commit d90513ea85693da0ca5955173609f4e81e38ae16)
lockf: Avoid spinning when operating on an fd
When operating on a file descriptor, acquire_lock() would ignore the
flags argument and always operate in non-blocking mode, resulting in
unnecessary busy-looping.
PR: 294832
MFC after: 1 week
Reviewed by: markj
Differential Revision: https://reviews.freebsd.org/D56722
(cherry picked from commit d90513ea85693da0ca5955173609f4e81e38ae16)
[MLIR][XeGPU] Clean up the temporary layout usage in XeGPU test (#195739)
This PR cleans up the XeGPU test to remove the temporary layout usage.
All distribution and unrolling tests now don't use temporary layout from
the operation and TensorDescriptor, since the recovery process won't
honor the temporary layout and only depends on the anchor layout.
It also refactors the layout function implementation by removing
recursive loops in getDistributeLayoutAttr(), and fixes two issues
surfaced from the test clean up: adding layout recovery support for
Extract/Insert op and tensor descriptor type.
sysutils/prokshy: New port: Small and lightweight bhyve agent
prokshy is a small and lightweight script that uses unixexec to
exchange data through the special character file (/dev/vtcon/prokshy)
created by virtio_console(4). This script is designed to "standardize"
the way a command is executed from the host into the virtual machine.
The host connects to the unix(4) socket created by bhyve(8) and
then sends a command, a space, and then the data (or the command’s
argument). prokshy doesn’t care about the argument format: you can
use netstring, JSON, base64, or any other format that can be sent
for the command you’ve created. That’s the other advantage of
prokshy: it allows you to implement a "command," making it truly
flexible.
WWW: https://github.com/DtxdF/prokshy
[LoopFusion] Document LoopFusion Pass (#192926)
The LoopFusion pass, currently disabled by default, lacks documentation. This patch is the first attempt to document the flow and current limitations.
Assisted by : Claude Opus 4.6
[LiveDebugValues] Avoid SmallSet for dead registers (#195841)
transferRegisterDef builds a list of dead registers and removes open ranges for
debug locations that use those registers. This list used a SmallSet, so each
insert also does uniquing in the hot per-instruction path. This showed up under
SmallSet<Register, 32>::insertImpl on profiles of sqlite on aarch64-O0-g.
Using a SmallVector instead and uniquing in collectIDsForRegs improves
compile-time.
CTMark geomean:
- stage1-O0-g: -0.35%
- stage1-aarch64-O0-g: -0.72%
- stage2-O0-g: -0.27%
https://llvm-compile-time-tracker.com/compare.php?from=c9d713aa48a714d20b8502d06b9feb24829e6f22&to=6c0d4aafb9e325259c88577d148ac13c643ea993&stat=instructions%3Au
Assisted-by: codex
[RegAlloc] consider urgent evict in evictInterference (#192631)
This assertion causes a crash in programs with high register pressure
when inline assembly is used.
```
assert((ExtraInfo->getCascade(Intf->reg()) < Cascade ||
VirtReg.isSpillable() < Intf->isSpillable()) &&
"Cannot decrease cascade number, illegal eviction");
```
It should account for the case where an urgent eviction may result in
cascade being less than `ExtraInfo->getCascade(Intf->reg())`
---------
Co-authored-by: Matt Arsenault <arsenm2 at gmail.com>
[CIR][NFC] Upstream mem2reg.cir from incubator (#194517)
Upstream `mem2reg.cir` from incubator.
Check that stack slots are promoted away after CFG flattening.
Partially addresses #156747.
makefs(8): improve fs-options documentation
Ensure all fs-options are documented, in alphabetical order.
Describe whether the option has a value (e.g., foo=str or foo=num),
and for numeric values describe the supported range.
Some markup consistency.
Remove my email from the man page.
