Doug / smarc-fsl-linux-kernel

16 Oct, 2007

1 commit

11 Oct, 2007

2 commits

01 Jun, 2007

1 commit

  • c79d9c9e9   net/hp100: fix section mismatch warning ... Browse Code »

    Fix following section mismatch warning in hp100:

    WARNING: drivers/net/hp100.o(.init.text+0x26a): Section mismatch: reference to .exit.text: (after 'init_module')

    The warning says that we use a function marked __exit from a
    function marked __init.
    This is not good on architectures where we discard __exit section
    for drivers that are built-in.

    Note: This warning is only seen by my local copy of modpost
    but the change will soon hit upstream.

    Signed-off-by: Sam Ravnborg
    Acked-by: Jeff Garzik
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Sam Ravnborg
     

26 Apr, 2007

1 commit

07 Feb, 2007

1 commit

05 Oct, 2006

1 commit

  • 7d12e780e   IRQ: Maintain regs pointer globally rather than passing to IRQ handlers ... Browse Code »

    Maintain a per-CPU global "struct pt_regs *" variable which can be used instead
    of passing regs around manually through all ~1800 interrupt handlers in the
    Linux kernel.

    The regs pointer is used in few places, but it potentially costs both stack
    space and code to pass it around. On the FRV arch, removing the regs parameter
    from all the genirq function results in a 20% speed up of the IRQ exit path
    (ie: from leaving timer_interrupt() to leaving do_IRQ()).

    Where appropriate, an arch may override the generic storage facility and do
    something different with the variable. On FRV, for instance, the address is
    maintained in GR28 at all times inside the kernel as part of general exception
    handling.

    Having looked over the code, it appears that the parameter may be handed down
    through up to twenty or so layers of functions. Consider a USB character
    device attached to a USB hub, attached to a USB controller that posts its
    interrupts through a cascaded auxiliary interrupt controller. A character
    device driver may want to pass regs to the sysrq handler through the input
    layer which adds another few layers of parameter passing.

    I've build this code with allyesconfig for x86_64 and i386. I've runtested the
    main part of the code on FRV and i386, though I can't test most of the drivers.
    I've also done partial conversion for powerpc and MIPS - these at least compile
    with minimal configurations.

    This will affect all archs. Mostly the changes should be relatively easy.
    Take do_IRQ(), store the regs pointer at the beginning, saving the old one:

    struct pt_regs *old_regs = set_irq_regs(regs);

    And put the old one back at the end:

    set_irq_regs(old_regs);

    Don't pass regs through to generic_handle_irq() or __do_IRQ().

    In timer_interrupt(), this sort of change will be necessary:

    - update_process_times(user_mode(regs));
    - profile_tick(CPU_PROFILING, regs);
    + update_process_times(user_mode(get_irq_regs()));
    + profile_tick(CPU_PROFILING);

    I'd like to move update_process_times()'s use of get_irq_regs() into itself,
    except that i386, alone of the archs, uses something other than user_mode().

    Some notes on the interrupt handling in the drivers:

    (*) input_dev() is now gone entirely. The regs pointer is no longer stored in
    the input_dev struct.

    (*) finish_unlinks() in drivers/usb/host/ohci-q.c needs checking. It does
    something different depending on whether it's been supplied with a regs
    pointer or not.

    (*) Various IRQ handler function pointers have been moved to type
    irq_handler_t.

    Signed-Off-By: David Howells
    (cherry picked from 1b16e7ac850969f38b375e511e3fa2f474a33867 commit)

    David Howells
     

03 Oct, 2006

1 commit

  • 7525d4bf9   [PATCH] hp100: fix conditional compilation mess ... Browse Code »

    The previous hp100 changeset attempted to kill warnings, but was only
    tested on !CONFIG_ISA platforms. The correct conditional compilation
    setup involves tested CONFIG_ISA rather than just MODULE.

    Fixes link on CONFIG_ISA platforms (i386) in current -git.

    Signed-off-by: Jeff Garzik
    Signed-off-by: Linus Torvalds

    Jeff Garzik
     

01 Oct, 2006

1 commit

14 Sep, 2006

1 commit

15 Aug, 2006

1 commit

03 Jul, 2006

1 commit

23 Jun, 2006

1 commit

  • 5b057c6b1   [NET]: Avoid allocating skb in skb_pad ... Browse Code »

    First of all it is unnecessary to allocate a new skb in skb_pad since
    the existing one is not shared. More importantly, our hard_start_xmit
    interface does not allow a new skb to be allocated since that breaks
    requeueing.

    This patch uses pskb_expand_head to expand the existing skb and linearize
    it if needed. Actually, someone should sift through every instance of
    skb_pad on a non-linear skb as they do not fit the reasons why this was
    originally created.

    Incidentally, this fixes a minor bug when the skb is cloned (tcpdump,
    TCP, etc.). As it is skb_pad will simply write over a cloned skb. Because
    of the position of the write it is unlikely to cause problems but still
    it's best if we don't do it.

    Signed-off-by: Herbert Xu
    Signed-off-by: David S. Miller

    Herbert Xu
     

10 Feb, 2006

1 commit

29 Jan, 2006

1 commit

17 Jan, 2006

1 commit

10 Jan, 2006

1 commit

09 Nov, 2005

1 commit

  • 733482e44   [PATCH] changing CONFIG_LOCALVERSION rebuilds too much, for no good reason ... Browse Code »

    This patch removes almost all inclusions of linux/version.h. The 3
    #defines are unused in most of the touched files.

    A few drivers use the simple KERNEL_VERSION(a,b,c) macro, which is
    unfortunatly in linux/version.h.

    There are also lots of #ifdef for long obsolete kernels, this was not
    touched. In a few places, the linux/version.h include was move to where
    the LINUX_VERSION_CODE was used.

    quilt vi `find * -type f -name "*.[ch]"|xargs grep -El '(UTS_RELEASE|LINUX_VERSION_CODE|KERNEL_VERSION|linux/version.h)'|grep -Ev '(/(boot|coda|drm)/|~$)'`

    search pattern:
    /UTS_RELEASE\|LINUX_VERSION_CODE\|KERNEL_VERSION\|linux\/\(utsname\|version\).h

    Signed-off-by: Olaf Hering
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Olaf Hering
     

14 Sep, 2005

1 commit

27 Jun, 2005

1 commit

  • 1e7f0bd8c   drivers/net/: Use the DMA_{64,32}BIT_MASK constants ... Browse Code »

    Use the DMA_{64,32}BIT_MASK constants from dma-mapping.h when calling
    pci_set_dma_mask() or pci_set_consistent_dma_mask()

    This patch includes dma-mapping.h explicitly because it caused errors
    on some architectures otherwise.

    See http://marc.theaimsgroup.com/?t=108001993000001&r=1&w=2 for details

    Signed-off-by: Tobias Klauser
    Signed-off-by: Domen Puncer

    Domen Puncer
     

13 May, 2005

1 commit

01 May, 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