commit | e412a045e6e81eb432e121e38123cb4942691e5b | [log] [tgz] |
---|---|---|
author | Mike Voydanoff <voydanoff@google.com> | Thu Mar 15 16:54:17 2018 -0700 |
committer | CQ bot account: commit-bot@chromium.org <commit-bot@chromium.org> | Fri Mar 16 18:24:41 2018 +0000 |
tree | c4e3eb30b500a2c2f2fd1ce12ee9e88ef4bc859f | |
parent | d09758461c2a15a8216d2400c89386e2882ed711 [diff] |
[dev][usb][xhci] Fix some problems in driver shut-down path: - Free our BTI handle last, so we don't fail unpinning when releasing io_buffers. - Shut down the device enumeration thread before stopping the controller. Otherwise we hang when trying to clean up device slots Change-Id: I11ab688ba67c0ab46241f5478523b527e81b6604
Zircon is the core platform that powers the Fuchsia OS. Zircon is composed of a microkernel (source in kernel/...) as well as a small set of userspace services, drivers, and libraries (source in system/...) necessary for the system to boot, talk to hardware, load userspace processes and run them, etc. Fuchsia builds a much larger OS on top of this foundation.
The canonical Zircon Git repository is located at: https://fuchsia.googlesource.com/zircon
A read-only mirror of the code is present at: https://github.com/fuchsia-mirror/zircon
The Zircon Kernel provides syscalls to manage processes, threads, virtual memory, inter-process communication, waiting on object state changes, and locking (via futexes).
Currently there are some temporary syscalls that have been used for early bringup work, which will be going away in the future as the long term syscall API/ABI surface is finalized. The expectation is that there will be about 100 syscalls.
Zircon syscalls are generally non-blocking. The wait_one, wait_many port_wait and thread sleep being the notable exceptions.
This page is a non-comprehensive index of the zircon documentation.