Revision d92da1fbb72490f999b7d0e809d13d0d52dc78ac authored by Linus Torvalds on 21 March 2019, 18:48:06 UTC, committed by Linus Torvalds on 21 March 2019, 18:48:06 UTC
Pull arm64 fixes from Catalin Marinas:
"Mostly fixes apart from the kprobe blacklist checking which was
deferred because of conflicting with a fix merged after I pinned the
arm64 for-next/core branch (f2b3d8566d81 "arm64: kprobe: Always
blacklist the KVM world-switch code").
Summary:
- Update the kprobe blacklist checking for arm64. This was supposed
to be queued during the merging window but, due to conflicts, it
was deferred post -rc1
- Extend the Fujitsu erratum 010001 workaround to A64FX v1r0
- Whitelist HiSilicon Taishan v110 CPUs as not susceptible to
Meltdown
- Export save_stack_trace_regs()
- Remove obsolete selection of MULTI_IRQ_HANDLER"
* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
arm64: remove obsolete selection of MULTI_IRQ_HANDLER
arm64: kpti: Whitelist HiSilicon Taishan v110 CPUs
arm64: Add MIDR encoding for HiSilicon Taishan CPUs
arm64/stacktrace: Export save_stack_trace_regs()
arm64: apply workaround on A64FX v1r0
arm64: kprobes: Use arch_populate_kprobe_blacklist()
arm64: kprobes: Move exception_text check in blacklist
arm64: kprobes: Remove unneeded RODATA check
arm64: kprobes: Move extable address check into arch_prepare_kprobe()
README
This directory includes a few programs that demonstrate how to use io_uring
in an application. The examples are:
io_uring-cp
A very basic io_uring implementation of cp(1). It takes two
arguments, copies the first argument to the second. This example
is part of liburing, and hence uses the simplified liburing API
for setting up an io_uring instance, submitting IO, completing IO,
etc. The support functions in queue.c and setup.c are straight
out of liburing.
io_uring-bench
Benchmark program that does random reads on a number of files. This
app demonstrates the various features of io_uring, like fixed files,
fixed buffers, and polled IO. There are options in the program to
control which features to use. Arguments is the file (or files) that
io_uring-bench should operate on. This uses the raw io_uring
interface.
liburing can be cloned with git here:
git://git.kernel.dk/liburing
and contains a number of unit tests as well for testing io_uring. It also
comes with man pages for the three system calls.
Fio includes an io_uring engine, you can clone fio here:
git://git.kernel.dk/fio
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