Eric Lee / smarc-fsl-linux-kernel

25 Sep, 2009

1 commit

  • 2c86963b0   [IA64] implement ticket locks for Itanium ... Browse Code »

    Back in January 2008 Nick Piggin implemented "ticket" spinlocks
    for X86 (See commit 314cdbefd1fd0a7acf3780e9628465b77ea6a836).

    IA64 implementation has a couple of differences because of the
    available atomic operations ... e.g. we have no fetchadd2 instruction
    that operates on a 16-bit quantity so we make ticket locks use
    a 32-bit word for each of the current ticket and now-serving values.

    Performance on uncontended locks is about 8% worse than the previous
    implementation, but this seems a good trade for determinism in the
    contended case. Performance impact on macro-level benchmarks is in
    the noise.

    Signed-off-by: Tony Luck

    Tony Luck
     

16 Oct, 2008

1 commit

20 Oct, 2007

1 commit

  • 09cadedbd   Combine instrumentation menus in kernel/Kconfig.instrumentation ... Browse Code »

    Quoting Randy:

    "It seems sad that this patch sources Kconfig.marker, a 7-line file,
    20-something times. Yes, you (we) don't want to put those 7 lines into
    20-something different files, so sourcing is the right thing.

    However, what you did for avr32 seems more on the right track to me: make
    _one_ Instrumentation support menu that includes PROFILING, OPROFILE, KPROBES,
    and MARKERS and then use (source) that in all of the arches."

    Signed-off-by: Mathieu Desnoyers
    Acked-by: Randy Dunlap
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Mathieu Desnoyers
     

01 Jul, 2006

1 commit

09 Jan, 2006

1 commit

  • a13656470   [PATCH] remove gcc-2 checks ... Browse Code »

    Remove various things which were checking for gcc-1.x and gcc-2.x compilers.

    From: Adrian Bunk

    Some documentation updates and removes some code paths for gcc < 3.2.

    Acked-by: Russell King
    Signed-off-by: Adrian Bunk
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Andrew Morton
     

07 Nov, 2005

1 commit

  • cd6b0762a   [PATCH] Move Kprobes and Oprofile to "Instrumentation Support" menu ... Browse Code »

    Andrew Morton suggested to move kprobes from kernel hacking menu, since
    kernel hacking menu is in-appropriate for the Kprobes. This patch moves
    Kprobes and Oprofile under instrumentation menu.

    (akpm: it's not a natural fit, but things like djprobes and the s390 guys'
    statistics library need a home)

    Signed-of-by: Prasanna S Panchamukhi
    Cc: Philippe Elie
    Cc: John Levon
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Prasanna S Panchamukhi
     

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