Eric Lee / smarc-fsl-linux-kernel

31 Jan, 2009

1 commit

11 May, 2007

1 commit

  • 9c3060bed   signal/timer/event: KAIO eventfd support example ... Browse Code »

    This is an example about how to add eventfd support to the current KAIO code,
    in order to enable KAIO to post readiness events to a pollable fd (hence
    compatible with POSIX select/poll). The KAIO code simply signals the eventfd
    fd when events are ready, and this triggers a POLLIN in the fd. This patch
    uses a reserved for future use member of the struct iocb to pass an eventfd
    file descriptor, that KAIO will use to post events every time a request
    completes. At that point, an aio_getevents() will return the completed result
    to a struct io_event. I made a quick test program to verify the patch, and it
    runs fine here:

    http://www.xmailserver.org/eventfd-aio-test.c

    The test program uses poll(2), but it'd, of course, work with select and epoll
    too.

    This can allow to schedule both block I/O and other poll-able devices
    requests, and wait for results using select/poll/epoll. In a typical
    scenario, an application would submit KAIO request using aio_submit(), and
    will also use epoll_ctl() on the whole other class of devices (that with the
    addition of signals, timers and user events, now it's pretty much complete),
    and then would:

    epoll_wait(...);
    for_each_event {
    if (curr_event_is_kaiofd) {
    aio_getevents();
    dispatch_aio_events();
    } else {
    dispatch_epoll_event();
    }
    }

    Signed-off-by: Davide Libenzi
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Davide Libenzi
     

04 Oct, 2006

1 commit

01 Oct, 2006

1 commit

  • eed4e51fb   [PATCH] Add vector AIO support ... Browse Code »

    This work is initially done by Zach Brown to add support for vectored aio.
    These are the core changes for AIO to support
    IOCB_CMD_PREADV/IOCB_CMD_PWRITEV.

    [akpm@osdl.org: huge build fix]
    Signed-off-by: Zach Brown
    Signed-off-by: Christoph Hellwig
    Signed-off-by: Badari Pulavarty
    Acked-by: Benjamin LaHaise
    Acked-by: James Morris
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Badari Pulavarty
     

17 Apr, 2005

1 commit

  • 1da177e4c   Linux-2.6.12-rc2 ... Browse Code »

    Initial git repository build. I'm not bothering with the full history,
    even though we have it. We can create a separate "historical" git
    archive of that later if we want to, and in the meantime it's about
    3.2GB when imported into git - space that would just make the early
    git days unnecessarily complicated, when we don't have a lot of good
    infrastructure for it.

    Let it rip!

    Linus Torvalds