Skip to content

L
linux-davinci
Switch branch/tag
  1. 17 Oct, 2008 2 commits
    • Eric Van Hensbergen's avatar
      9p: consolidate transport structure · 8b81ef58
      Eric Van Hensbergen authored 
      Right now there is a transport module structure which provides per-transport
type functions and data and a transport structure which contains per-instance
public data as well as function pointers to instance specific functions.

This patch moves public transport visible instance data to the client
structure (which in some cases had duplicate data) and consolidates the
functions into the transport module structure.
Signed-off-by: default avatarEric Van Hensbergen <ericvh@gmail.com>
      8b81ef58
    • Tejun Heo's avatar
      9p-trans_fd: use single poller · 992b3f1d
      Tejun Heo authored 
      trans_fd used pool of upto 100 pollers to monitor the r/w fds.  The
approach makes sense in userspace back when the only available
interfaces were poll(2) and select(2).  As each event monitor -
trigger - handling iteration took O(n) where `n' is the number of
watched fds, it makes sense to spread them to many pollers such that
the `n' can be divided by the number of pollers.  However, this
doesn't make any sense in kernel because persistent edge triggered
event monitoring is how the whole thing is implemented in the kernel
in the first place.

This patch converts trans_fd to use single poller which watches all
the fds instead of the poll of pollers approach.  All the fds are
registered for monitoring on creation and only the fds with pending
events are scanned when something happens much like how epoll is
implemented.

This change makes trans_fd fd monitoring more efficient and simpler.
Signed-off-by: default avatarTejun Heo <tj@kernel.org>
Signed-off-by: default avatarEric Van Hensbergen <ericvh@gmail.com>
      992b3f1d
  3. 16 Oct, 2008 38 commits