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add runc shim support for sched core

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In linux 5.14 and hopefully some backports, core scheduling allows processes to
be co scheduled within the same domain on SMT enabled systems.

The containerd impl sets the core sched domain when launching a shim. This
allows a clean way for each shim(container/pod) to be in its own domain and any
additional containers, (v2 pods) be be launched with the same domain as well as
any exec'd process added to the container.

kernel docs: https://www.kernel.org/doc/html/latest/admin-guide/hw-vuln/core-scheduling.html

Signed-off-by: Michael Crosby <michael@thepasture.io>
This commit is contained in:
Michael Crosby
2021-09-15 17:49:38 +00:00
parent 88e1cf5fb5
commit e48bbe8394
99 changed files with 4329 additions and 3611 deletions
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34
vendor/golang.org/x/sys/unix/zsyscall_linux.go generated vendored
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@@ -48,6 +48,16 @@ func ioctl(fd int, req uint, arg uintptr) (err error) {
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func ioctlPtr(fd int, req uint, arg unsafe.Pointer) (err error) {
_, _, e1 := Syscall(SYS_IOCTL, uintptr(fd), uintptr(req), uintptr(arg))
if e1 != 0 {
err = errnoErr(e1)
}
return
}
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func Linkat(olddirfd int, oldpath string, newdirfd int, newpath string, flags int) (err error) {
var _p0 *byte
_p0, err = BytePtrFromString(oldpath)
@@ -1201,7 +1211,7 @@ func PivotRoot(newroot string, putold string) (err error) {
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func prlimit(pid int, resource int, newlimit *Rlimit, old *Rlimit) (err error) {
func Prlimit(pid int, resource int, newlimit *Rlimit, old *Rlimit) (err error) {
_, _, e1 := RawSyscall6(SYS_PRLIMIT64, uintptr(pid), uintptr(resource), uintptr(unsafe.Pointer(newlimit)), uintptr(unsafe.Pointer(old)), 0, 0)
if e1 != 0 {
err = errnoErr(e1)
@@ -1935,6 +1945,28 @@ func ProcessVMWritev(pid int, localIov []Iovec, remoteIov []RemoteIovec, flags u
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func PidfdOpen(pid int, flags int) (fd int, err error) {
r0, _, e1 := Syscall(SYS_PIDFD_OPEN, uintptr(pid), uintptr(flags), 0)
fd = int(r0)
if e1 != 0 {
err = errnoErr(e1)
}
return
}
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func PidfdGetfd(pidfd int, targetfd int, flags int) (fd int, err error) {
r0, _, e1 := Syscall(SYS_PIDFD_GETFD, uintptr(pidfd), uintptr(targetfd), uintptr(flags))
fd = int(r0)
if e1 != 0 {
err = errnoErr(e1)
}
return
}
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func pipe2(p *[2]_C_int, flags int) (err error) {
_, _, e1 := RawSyscall(SYS_PIPE2, uintptr(unsafe.Pointer(p)), uintptr(flags), 0)
if e1 != 0 {