lkml.org 
[lkml]   [2007]   [Apr]   [13]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    /
    Date
    From
    SubjectRe: [RFD] swsusp problem: Drivers allocate much memory during suspend
    Rafael J. Wysocki wrote:
    >
    > IMO to really fix the problem, we should let the drivers that need much memory
    > for suspending allocate it _before_ the memory shrinker is called. For this
    > purpose we can use notifiers that will be called before we start the shrinking
    > of memory. Namely, if a driver needs to allocate substantial amount of memory
    > for suspending, it can register a notifier that will be called before we try to
    > shrink memory. Then, the memory needed by the driver may be allocated in
    > this notifier (of course, in that case it will also have to be called if the
    > shrinking of memory fails, so that the memory allocated by the driver for
    > suspending can be freed) and used in the driver's .suspend() routine.
    >

    Can't you just put a "prepare to suspend" function pointer in the
    bus_type and device_driver structs?

    -
    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: 2007-04-14 00:29    [W:0.019 / U:16.620 seconds]
    ©2003-2017 Jasper Spaans. hosted at Digital OceanAdvertise on this site