lkml.org 
[lkml]   [2006]   [Aug]   [16]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    /
    Date
    SubjectRe: [PATCH 1/2]: powerpc/cell spidernet bottom half
    From
    From: Jeff Garzik <jeff@garzik.org>
    Date: Wed, 16 Aug 2006 16:34:31 -0400

    > Linas Vepstas wrote:
    > > I was under the impression that NAPI was for the receive side only.
    >
    > That depends on the driver implementation.

    What Jeff is trying to say is that TX reclaim can occur in
    the NAPI poll routine, and in fact this is what the vast
    majority of NAPI drivers do.

    It also makes the locking simpler.

    In practice, the best thing seems to be to put both RX and TX
    work into ->poll() and have a very mild hw interrupt mitigation
    setting programmed into the chip.

    I'm not familiar with the spidernet TX side interrupt capabilities
    so I can't say whether that is something that can be directly
    implied. In fact, I get the impression that spidernet is limited
    in some way and that's where all the strange approaches are coming
    from :)
    -
    To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
    the body of a message to majordomo@vger.kernel.org
    More majordomo info at http://vger.kernel.org/majordomo-info.html
    Please read the FAQ at http://www.tux.org/lkml/

    \
     
     \ /
      Last update: 2006-08-16 22:49    [W:3.521 / U:0.008 seconds]
    ©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site