Doug / smarc-fsl-linux-kernel

30 Nov, 2007

1 commit

  • 68576cf12   IP22ZILOG: fix lockup and sysrq ... Browse Code »

    - fix lockup when switching from early console to real console
    - make sysrq reliable
    - fix panic, if sysrq is issued before console is opened

    Signed-off-by: Thomas Bogendoerfer
    Acked-by: Ralf Baechle
    Cc: Alan Cox
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Thomas Bogendoerfer
     

27 Nov, 2007

1 commit

  • 07500b0d8   [MIPS] Fix context DSP context / TLS pointer switching bug for new threads. ... Browse Code »

    A new born thread starts execution not in schedule but rather in
    ret_from_fork which results in it bypassing the part of the code to
    load a new context written in C which are the DSP context and the
    userlocal register which Linux uses for the TLS pointer. Frequently
    we were just getting away with this bug for a number of reasons:

    o Real world application scenarios are very unlikely to use clone or fork
    in blocks of DSP code.
    o Linux by default runs the child process right after the fork, so the
    child by luck will find all the right context in the DSP and userlocal
    registers.
    o So far the rdhwr instruction was emulated on all hardware so userlocal
    wasn't getting referenced at all and the emulation wasn't suffering
    from the issue since it gets it's value straight from the thread's
    thread_info.

    Fixed by moving the code to load the context from switch_to() to
    finish_arch_switch which will be called by newborn and old threads.

    Signed-off-by: Ralf Baechle

    Ralf Baechle
     

12 Oct, 2007

2 commits

03 Oct, 2007

1 commit

01 Aug, 2007

1 commit

21 Jul, 2007

2 commits

20 Jul, 2007

1 commit

11 Jul, 2007

3 commits

11 May, 2007

1 commit

10 May, 2007

1 commit

  • c9f4f06d3   wrap access to thread_info ... Browse Code »

    Recently a few direct accesses to the thread_info in the task structure snuck
    back, so this wraps them with the appropriate wrapper.

    Signed-off-by: Roman Zippel
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Roman Zippel
     

09 May, 2007

2 commits

17 Mar, 2007

1 commit

14 Feb, 2007

1 commit

  • f65e4fa8e   [MIPS] Improve branch prediction in ll/sc atomic operations. ... Browse Code »

    Now that finally all supported versions of binutils have functioning
    support for .subsection use .subsection to tweak the branch prediction

    I did not modify the R10000 errata variants because it seems unclear if
    this will invalidate the workaround which actually relies on the cheesy
    prediction of branch likely to cause a misspredict if the sc was
    successful.

    Signed-off-by: Ralf Baechle

    Ralf Baechle
     

11 Dec, 2006

1 commit

05 Dec, 2006

1 commit

03 Nov, 2006

1 commit

15 Jul, 2006

1 commit

  • 52393ccc0   [PATCH] remove set_wmb - arch removal ... Browse Code »

    set_wmb should not be used in the kernel because it just confuses the
    code more and has no benefit. Since it is not currently used in the
    kernel this patch removes it so that new code does not include it.

    All archs define set_wmb(var, value) to do { var = value; wmb(); }
    while(0) except ia64 and sparc which use a mb() instead. But this is
    still moot since it is not used anyway.

    Hasn't been tested on any archs but x86 and x86_64 (and only compiled
    tested)

    Signed-off-by: Steven Rostedt
    Signed-off-by: Linus Torvalds

    Steven Rostedt
     

14 Jul, 2006

1 commit

26 Apr, 2006

1 commit

19 Apr, 2006

3 commits

21 Mar, 2006

1 commit

28 Feb, 2006

1 commit

13 Jan, 2006

2 commits

30 Oct, 2005

9 commits