//go:build loong64

package cpu

// CacheLinePadSize is used to prevent false sharing of cache lines.
// We choose 64 because Loongson 3A5000 the L1 Dcache is 4-way 256-line 64-byte-per-line.
const CacheLinePadSize = 64

//go:build linux && (mips64 || mips64le)

package cpu

// HWCAP bits. These are exposed by the Linux kernel 5.4.
const (
	// CPU features
	hwcap_MIPS_MSA = 1 << 1
)

func doinit() {
	// HWCAP feature bits
	MIPS64X.HasMSA = isSet(hwCap, hwcap_MIPS_MSA)
}

func isSet(hwc uint, value uint) bool {
	return hwc&value != 0

// the semantics on filesystems like XFS, and these semantics are not
// implemented at this time.
// For more information on why typical DirectIO semantics do not apply to ZFS
// see this ZFS-on-Linux commit message:
// https://github.com/openzfs/zfs/commit/a584ef26053065f486d46a7335bea222cb03eeea

// OpenFileDirectIO wrapper around os.OpenFile nothing special
func OpenFileDirectIO(filePath string, flag int, perm os.FileMode) (*os.File, error) {

* table
-N chain
-A chain -f foo -b bar
-I chain 2 -f foo -b bar
-I chain 1 -f foo -b bar

When you see a performance regression, either by looking at the performance graph
or by having a new failing test, given the current slow feedback cycle, it can
be difficult to track the exact commit that triggered the regression.

The most convenient way to find the commit is to use `git bisect`. Before doing so
you need to
 1. identify the test that exposes the regression

env GIT_AUTHOR_NAME='Russ Cox'
env GIT_AUTHOR_EMAIL='******@****.***'
env GIT_COMMITTER_NAME=$GIT_AUTHOR_NAME
env GIT_COMMITTER_EMAIL=$GIT_AUTHOR_EMAIL

git init

at 2018-07-03T22:35:49-04:00
git add go.mod
git commit -m 'initial'
git branch -m master

git log --oneline
cmp stdout .git-log

-- .git-log --
7bb9146 initial
-- go.mod --

handle hg
hg init

hg add hello.go
hg commit --user 'Russ Cox <******@****.***>' --date '2017-10-10T19:39:36-04:00' --message 'hello'

hg log -r ':' --template '{node|short} {desc|strip|firstline}\n'
cmp stdout .hg-log

-- .hg-log --
a8c8e7a40da9 hello
-- hello.go --
package main // import "vcs-test.golang.org/go/custom-hg-hello"

func main() {
	println("hello")

handle git

env GIT_AUTHOR_NAME=bwk
env GIT_AUTHOR_EMAIL=bwk
env GIT_COMMITTER_NAME='Russ Cox'
env GIT_COMMITTER_EMAIL='******@****.***'

git init

at 2017-09-21T21:05:58-04:00
git add hello.go
git commit -a -m 'hello'
git branch -m master

git log --oneline --decorate=short
cmp stdout .git-log

-- .git-log --
fc3a09f (HEAD -> master) hello
-- hello.go --
package main

func main() {
	println("hello, world")

-I ISTIO_INBOUND 1 -p tcp -m mark --mark 1337 -j RETURN
-I ISTIO_INBOUND 2 -p tcp -s 127.0.0.6/32 -i lo -j RETURN
-I ISTIO_INBOUND 3 -p tcp -i lo -m mark ! --mark 1338 -j RETURN
COMMIT
* nat
-N ISTIO_INBOUND
-N ISTIO_REDIRECT
-N ISTIO_IN_REDIRECT
-N ISTIO_OUTPUT
-A ISTIO_INBOUND -p tcp --dport 15008 -j RETURN
-A ISTIO_REDIRECT -p tcp -j REDIRECT --to-ports 15001

# For most projects, this workflow file will not need changing; you simply need
# to commit it to your repository.
#
# You may wish to alter this file to override the set of languages analyzed,
# or to provide custom queries or build logic.
name: "CodeQL"

on:
  push:
    branches:
    - master
    - "*.x"
  pull_request:
    branches:
    - master
    - "*.x"
  schedule:
    - cron: '0 0 * * 4'

jobs:
  analyze: