lkml.org 
[lkml]   [2007]   [Apr]   [30]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    /
    Date
    From
    SubjectRe: [-mm patch] i386: enable 4k stacks by default
    On Mon, Apr 30, 2007 at 02:13:16PM +0200, Andi Kleen wrote:
    > Actually looking at the code it would need some fixes first:
    > /*
    > * These should really be __section__(".bss.page_aligned") as well, but
    > * gcc's 3.0 and earlier don't handle that correctly.
    > */
    > static char softirq_stack[NR_CPUS * THREAD_SIZE]
    > __attribute__((__aligned__(THREAD_SIZE)));
    >
    > static char hardirq_stack[NR_CPUS * THREAD_SIZE]
    > __attribute__((__aligned__(THREAD_SIZE)));
    >
    > With 8K stacks and NR_CPUS==128 that would be 2MB statically reserved. Yuck.
    > Really needs to be dynamically allocated. I'll take a look once the .22
    > big merge is done.

    Here's what I did for i386 for someone concerned about blowing the stack.


    -- wli
    -
    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: 2007-04-30 19:43    [W:0.020 / U:0.416 seconds]
    ©2003-2016 Jasper Spaans. hosted at Digital OceanAdvertise on this site