[roll] Roll fuchsia [kernel][fasttime] Implement libfasttime Adds a new kernel library called libfasttime that allows callers to retrieve ticks and compute CLOCK_MONOTONIC without having to make a a syscall on platforms that support it. This library reads values associated with time, such as the raw_ticks_to_ticks_offset and the ratio between ticks and monotonic time, out of a new, read-only VMO called the TimeValuesVmo. As implemented, this VMO is actually a child slice of the vDSO VMO, which allows the time constants to be shared between syscalls, vDSO functions, and libfasttime. A handle to this VMO is provided to userboot, which then makes it available to userspace. This library will be used by starnix to compute CLOCK_MONOTONIC from the Linux vDSO, which does not have access to clock syscalls. Original-Bug: 328306129 Original-Reviewed-on: https://fuchsia-review.googlesource.com/c/fuchsia/+/1045493 Original-Revision: ecef40c9c97bcd18f3b1ae803bdc46f5fc835652 GitOrigin-RevId: bdf5d1254f7edb439a742274ee76eee6a2356e42 Change-Id: I31ebee17f983a56d4596d1bd0bd568705baaa563
This repository contains Fuchsia's Global Integration manifest files.
All changes should be made to the internal version of this repository. Our infrastructure automatically updates this version when the internal one changes.
Currently all changes must be made by a Google employee. Non-Google employees wishing to make a change can ask for assistance via the IRC channel #fuchsia on Freenode.
First install Jiri.
Next run:
$ jiri init $ jiri import minimal https://fuchsia.googlesource.com/integration $ jiri update
Third party projects should have their own subdirectory in ./third_party.