lkml.org 
[lkml]   [2016]   [Sep]   [26]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    /
    SubjectRe: [PATCH v2] fs/select: add vmalloc fallback for select(2)
    From
    Date
    On Mon, 2016-09-26 at 17:01 -0700, Andrew Morton wrote:

    > I don't share Eric's concerns about performance here. If the vmalloc()
    > is called, we're about to write to that quite large amount of memory
    > which we just allocated, and the vmalloc() overhead will be relatively
    > low.

    I did not care of the performance of this particular select() system
    call really, but other cpus because of more TLB invalidations.

    At least CONFIG_DEBUG_PAGEALLOC=y builds should be impacted, but maybe
    we do not care.


    \
     
     \ /
      Last update: 2016-09-27 03:39    [W:2.529 / U:0.208 seconds]
    ©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site