Doug / smarc-fsl-linux-kernel

20 Jul, 2007

1 commit

16 May, 2007

1 commit

11 May, 2007

1 commit

  • 43c09ce79   m32r: fix switch_to macro to push/pop frame pointer if needed ... Browse Code »

    This patch fixes a rarely-happened but severe scheduling problem of
    the recent m32r kernel of 2.6.17-rc3 or later.

    In the following previous m32r patch, the switch_to macro was
    modified not to do unnecessary push/pop operations for tuning.
    > [PATCH] m32r: update switch_to macro for tuning
    > 4127272c38619c56f0c1aa01d01c7bd757db70a1

    In this modification, only 'lr' and 'sp' registers are push/pop'ed,
    assuming that the m32r kernel is always compiled with
    -fomit-frame-pointer option.

    However, in 2.6 kernel, kernel/sched.c is irregularly compiled
    with -fno-omit-frame-pointer if CONFIG_SCHED_NO_NO_OMIT_FRAME_POINTER
    is not defined.

    -- kernel/Makefile --
    :
    ifneq ($(CONFIG_SCHED_NO_NO_OMIT_FRAME_POINTER),y)
    # According to Alan Modra , the -fno-omit-frame-pointer is
    # needed for x86 only. Why this used to be enabled for all architectures is beyond
    # me. I suspect most platforms don't need this, but until we know that for sure
    # I turn this off for IA-64 only. Andreas Schwab says it's also needed on m68k
    # to get a correct value for the wait-channel (WCHAN in ps). --davidm
    CFLAGS_sched.o := $(PROFILING) -fno-omit-frame-pointer
    endif
    :
    ---

    Therefore, for the recent m32r kernel, we have to push/pop 'fp'
    (frame pointer) if CONFIG_FRAME_POINTER is defined or
    CONFIG_SCHED_NO_NO_OMIT_FRAME_POINTER is not defined.

    Signed-off-by: Hitoshi Yamamoto
    Signed-off-by: Hirokazu Takata
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Hirokazu Takata
     

09 May, 2007

2 commits

12 Feb, 2007

1 commit

27 Sep, 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
     

04 Jul, 2006

1 commit

27 Jun, 2006

1 commit

  • d6e05edc5   spelling fixes ... Browse Code »

    acquired (aquired)
    contiguous (contigious)
    successful (succesful, succesfull)
    surprise (suprise)
    whether (weather)
    some other misspellings

    Signed-off-by: Andreas Mohr
    Signed-off-by: Adrian Bunk

    Andreas Mohr
     

26 Apr, 2006

1 commit

20 Apr, 2006

1 commit

11 Apr, 2006

1 commit

21 Feb, 2006

1 commit

  • b04ec261b   [PATCH] m32r: __cmpxchg_u32 fix ... Browse Code »

    This patch fixes a bug of include/asm-m32r/system.h:__cmpxchg_u32().

    static __inline__ unsigned long
    __cmpxchg_u32(volatile unsigned int *p, unsigned int old, unsigned int new);

    In __cmpxchg_u32(), the "old" value must not be changed to the previous "*p"
    value. But the former code modifies the previous "*p" value.

    A deadlock at _atomic_dec_and_lock sometimes happened due to this bug.

    Signed-off-by: Hayato Fujiwara
    Signed-off-by: Hirokazu Takata
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Hirokazu Takata
     

13 Jan, 2006

1 commit

  • 4dc7a0bbe   [PATCH] sched: add cacheflush() asm ... Browse Code »

    Add per-arch sched_cacheflush() which is a write-back cacheflush used by
    the migration-cost calibration code at bootup time.

    Signed-off-by: Ingo Molnar
    Cc: Nick Piggin
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Ingo Molnar
     

07 Jan, 2006

1 commit

  • 9287d95ea   [PATCH] m32r: Support M32104UT target platform ... Browse Code »

    This patch is for supporting a new target platform, Renesas M32104UT
    evaluation board.

    The M32104UT is an eval board based on an uT-Engine specification. This board
    has an MMU-less M32R family processor, M32104.
    http://www-wa0.personal-media.co.jp/pmc/archive/te/te_m32104_e.pdf

    This board is one of the most popular M32R platform, so we have ported
    Linux/M32R to it.

    Signed-off-by: Naoto Sugai
    Signed-off-by: Hirokazu Takata
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Hirokazu Takata
     

29 Nov, 2005

1 commit

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