Eric Lee / smarc-fsl-linux-kernel

20 Aug, 2013

1 commit

  • 884ad3f16   doc: fix a typo about irq affinity ... Browse Code »

    smp_affinity holds bitmask and smp_affinity_list holds list. So we
    should write a list to smp_affinity_list, instead of smp_affinity.

    Signed-off-by: Hu Tao
    Acked-by: Rob Landley
    Signed-off-by: Jiri Kosina

    Hu Tao
     

25 May, 2011

1 commit

  • 4b060420a   bitmap, irq: add smp_affinity_list interface to /proc/irq ... Browse Code »

    Manually adjusting the smp_affinity for IRQ's becomes unwieldy when the
    cpu count is large.

    Setting smp affinity to cpus 256 to 263 would be:

    echo 000000ff,00000000,00000000,00000000,00000000,00000000,00000000,00000000 > smp_affinity

    instead of:

    echo 256-263 > smp_affinity_list

    Think about what it looks like for cpus around say, 4088 to 4095.

    We already have many alternate "list" interfaces:

    /sys/devices/system/cpu/cpuX/indexY/shared_cpu_list
    /sys/devices/system/cpu/cpuX/topology/thread_siblings_list
    /sys/devices/system/cpu/cpuX/topology/core_siblings_list
    /sys/devices/system/node/nodeX/cpulist
    /sys/devices/pci***/***/local_cpulist

    Add a companion interface, smp_affinity_list to use cpu lists instead of
    cpu maps. This conforms to other companion interfaces where both a map
    and a list interface exists.

    This required adding a bitmap_parselist_user() function in a manner
    similar to the bitmap_parse_user() function.

    [akpm@linux-foundation.org: make __bitmap_parselist() static]
    Signed-off-by: Mike Travis
    Cc: Thomas Gleixner
    Cc: Jack Steiner
    Cc: Lee Schermerhorn
    Cc: Andy Shevchenko
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Mike Travis
     

05 Jun, 2008

1 commit

  • 184047567   genirq: Expose default irq affinity mask (take 3) ... Browse Code »

    Current IRQ affinity interface does not provide a way to set affinity
    for the IRQs that will be allocated/activated in the future.
    This patch creates /proc/irq/default_smp_affinity that lets users set
    default affinity mask for the newly allocated IRQs. Changing the default
    does not affect affinity masks for the currently active IRQs, they
    have to be changed explicitly.

    Updated based on Paul J's comments and added some more documentation.

    Signed-off-by: Max Krasnyansky
    Cc: pj@sgi.com
    Cc: a.p.zijlstra@chello.nl
    Cc: tglx@linutronix.de
    Cc: rdunlap@xenotime.net
    Cc: mingo@elte.hu
    Signed-off-by: Thomas Gleixner

    Max Krasnyansky
     

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