Eric Lee / smarc-fsl-linux-kernel

02 Nov, 2011

8 commits

15 Sep, 2011

1 commit

  • 2c51a4bc0   um: fix strrchr() problems ... Browse Code »

    richard@nod.at:
    Fixes:
    /usr/lib/gcc/x86_64-linux-gnu/4.4.5/../../../../lib/libc.a(strrchr.o): In function `rindex':
    (.text+0x0): multiple definition of `strrchr'

    If both STATIC_LINK and UML_NET_VDE are set to "y" libc's strrchr may
    clash with the kernel implementation.

    This workaround comes originally from Jeff Dike:
    http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=494995#35

    Signed-off-by: Al Viro
    Signed-off-by: Richard Weinberger
    Cc: Jeff Dike
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Al Viro
     

12 Dec, 2009

1 commit

  • 559df2e02   kbuild: move asm-offsets.h to include/generated ... Browse Code »

    The simplest method was to add an extra asm-offsets.h
    file in arch/$ARCH/include/asm that references the generated file.

    We can now migrate the architectures one-by-one to reference
    the generated file direct - and when done we can delete the
    temporary arch/$ARCH/include/asm/asm-offsets.h file.

    Signed-off-by: Sam Ravnborg
    Cc: Al Viro
    Signed-off-by: Michal Marek

    Sam Ravnborg
     

20 Sep, 2009

1 commit

  • 51b563fc9   arm, cris, mips, sparc, powerpc, um, xtensa: fix build with bash 4.0 ... Browse Code »

    Albin Tonnerre reported:

    Bash 4 filters out variables which contain a dot in them.
    This happends to be the case of CPPFLAGS_vmlinux.lds.
    This is rather unfortunate, as it now causes
    build failures when using SHELL=/bin/bash to compile,
    or when bash happens to be used by make (eg when it's /bin/sh)

    Remove the common definition of CPPFLAGS_vmlinux.lds by
    pushing relevant stuff to either Makefile.build or the
    arch specific kernel/Makefile where we build the linker script.

    This is also nice cleanup as we move the information out where
    it is used.

    Notes for the different architectures touched:

    arm - we use an already exported symbol
    cris - we use a config symbol aleady available
    [Not build tested]
    mips - the jiffies complexity has moved to vmlinux.lds.S where we need it.
    Added a few variables to CPPFLAGS - they are only used by
    the linker script.
    [Not build tested]
    powerpc - removed assignment that is not needed
    [not build tested]
    sparc - simplified it using $(BITS)
    um - introduced a few new exported variables to deal with this
    xtensa - added options to CPP invocation
    [not build tested]

    Cc: Albin Tonnerre
    Cc: Russell King
    Cc: Mikael Starvik
    Cc: Jesper Nilsson
    Cc: Benjamin Herrenschmidt
    Cc: Paul Mackerras
    Cc: "David S. Miller"
    Cc: Jeff Dike
    Cc: Chris Zankel
    Signed-off-by: Sam Ravnborg

    Sam Ravnborg
     

06 Jan, 2009

1 commit

  • 22409f9c8   get rid of the last symlink in uml build ... Browse Code »

    We need to make asm-offsets.h contents visible for objects built
    with userland headers. Instead of creating a symlink, just have the
    file with equivalent include (relative to location of header) created
    once. That kills the last symlink used in arch/um builds.

    Additionally, both generated headers can become dependencies of
    archprepare now, killing the misuse of prepare.

    Signed-off-by: Al Viro
    Signed-off-by: Linus Torvalds

    Al Viro
     

23 Oct, 2008

15 commits

08 Jul, 2008

1 commit

  • 4f81c5350   [UML] fix gcc ICEs and unresolved externs ... Browse Code »

    There are various constraints on the use of unit-at-a-time:
    - i386 uses no-unit-at-a-time for pre-4.0 (not 4.3)
    - x86_64 uses unit-at-a-time always

    Uli reported a crash on x86_64 with gcc 4.1.2 with unit-at-a-time,
    resulting in commit c0a18111e571138747a98af18b3a2124df56a0d1

    Ingo reported a gcc internal error with gcc 4.3 with no-unit-at-a-timem,
    resulting in 22eecde2f9034764a3fd095eecfa3adfb8ec9a98

    Benny Halevy is seeing extern inlines not resolved with gcc 4.3 with
    no-unit-at-a-time

    This patch reintroduces unit-at-a-time for gcc >= 4.0, bringing back the
    possibility of Uli's crash. If that happens, we'll debug it.

    I started seeing both the internal compiler errors and unresolved
    inlines on Fedora 9. This patch fixes both problems, without so far
    reintroducing the crash reported by Uli.

    Signed-off-by: Jeff Dike
    Cc: Benny Halevy
    Cc: Adrian Bunk
    Cc: Ingo Molnar
    Cc: Ulrich Drepper
    Signed-off-by: Linus Torvalds

    Jeff Dike
     

07 May, 2008

1 commit

  • c0a18111e   Revert "uml: fix gcc problem" ... Browse Code »

    This reverts commit 22eecde2f9034764a3fd095eecfa3adfb8ec9a98. Uli
    reports that it breaks UML on x86-64 with the Fedora 8 gcc (gcc 4.1.2),
    causing a crash on startup. See

    http://marc.info/?l=linux-kernel&m=121011722806093&w=2

    for a trace.

    Reported-by: Ulrich Drepper
    Cc: Ingo Molnar
    Cc: Thomas Gleixner
    Cc: Andrew Morton
    Signed-off-by: Linus Torvalds

    Linus Torvalds
     

05 May, 2008

1 commit

09 Feb, 2008

1 commit

  • 536788fe2   uml: runtime host VMSPLIT detection ... Browse Code »

    Calculate TASK_SIZE at run-time by figuring out the host's VMSPLIT - this is
    needed on i386 if UML is to run on hosts with varying VMSPLITs without
    recompilation.

    TASK_SIZE is now defined in terms of a variable, task_size. This gets rid of
    an include of pgtable.h from processor.h, which can cause include loops.

    On i386, task_size is calculated early in boot by probing the address space in
    a binary search to figure out where the boundary between usable and non-usable
    memory is. This tries to make sure that a page that is considered to be in
    userspace is, or can be made, read-write. I'm concerned about a system-global
    VDSO page in kernel memory being hit and considered to be a userspace page.

    On x86_64, task_size is just the old value of CONFIG_TOP_ADDR.

    A bunch of config variable are gone now. CONFIG_TOP_ADDR is directly replaced
    by TASK_SIZE. NEST_LEVEL is gone since the relocation of the stubs makes it
    irrelevant. All the HOST_VMSPLIT stuff is gone. All references to these in
    arch/um/Makefile are also gone.

    I noticed and fixed a missing extern in os.h when adding os_get_task_size.

    Note: This has been revised to fix the 32-bit UML on 64-bit host bug that
    Miklos ran into.

    Signed-off-by: Jeff Dike
    Cc: Miklos Szeredi
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Jeff Dike
     

06 Feb, 2008

3 commits

  • 47afa1d5f   uml: remove TOPDIR ... Browse Code »

    TOPDIR is obsolete, use srctree instead. This patch removes TOPDIR from all
    UML Makefiles.

    Cc: Sam Ravnborg
    Signed-off-by: WANG Cong
    Signed-off-by: Jeff Dike
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    WANG Cong
     
  • 260c0cb88   uml: fx command-line CFLAGS and LDFLAGS support ... Browse Code »

    UML still needed some work in order to allow CFLAGS to be passed in from the
    command line.

    USER_CFLAGS is produced from KBUILD_CFLAGS in part by removing all the -I
    switches. This is so that kernel headers don't accidentally get pulled into
    libc files. However, a common use of command-line CFLAGS would be to add -I
    switches to the build. This patch specifically adds any command-line -I flags
    back to USER_CFLAGS.

    I also corrected the spelling of LFLAGS to LDFLAGS.

    Signed-off-by: Jeff Dike
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Jeff Dike
     
  • 0ba7fe03b   uml: allow LFLAGS on command line ... Browse Code »

    Allow LFLAGS to be given to make and have the expected effect.

    Signed-off-by: Jeff Dike
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Jeff Dike
     

30 Nov, 2007

1 commit

  • c06869d66   UML: build fix ... Browse Code »

    include/asm-um/arch points to the non-existed include/asm-i386 directory.

    Signed-off-by: WANG Cong
    Cc: Jeff Dike
    Cc: Sam Ravnborg
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    WANG Cong
     

15 Nov, 2007

1 commit

  • fcbaa088f   uml: fix symlink loops ... Browse Code »

    symlinks to directories in the non-O= case were lacking -n, which meant
    that, when the link already existed, a new link pointing at itself was
    created in the target directory.

    Signed-off-by: Jeff Dike
    Cc: Sam Ravnborg
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Jeff Dike
     

06 Nov, 2007

1 commit

17 Oct, 2007

3 commits

  • 821f3eff7   Merge git://git.kernel.org/pub/scm/linux/kernel/git/sam/kbuild ... Browse Code »

    * git://git.kernel.org/pub/scm/linux/kernel/git/sam/kbuild: (40 commits)
    kbuild: introduce ccflags-y, asflags-y and ldflags-y
    kbuild: enable 'make CPPFLAGS=...' to add additional options to CPP
    kbuild: enable use of AFLAGS and CFLAGS on commandline
    kbuild: enable 'make AFLAGS=...' to add additional options to AS
    kbuild: fix AFLAGS use in h8300 and m68knommu
    kbuild: check for wrong use of CFLAGS
    kbuild: enable 'make CFLAGS=...' to add additional options to CC
    kbuild: fix up CFLAGS usage
    kbuild: make modpost detect unterminated device id lists
    kbuild: call export_report from the Makefile
    kbuild: move Kai Germaschewski to CREDITS
    kconfig/menuconfig: distinguish between selected-by-another options and comments
    kconfig: tristate choices with mixed tristate and boolean values
    include/linux/Kbuild: remove duplicate entries
    kbuild: kill backward compatibility checks
    kbuild: kill EXTRA_ARFLAGS
    kbuild: fix documentation in makefiles.txt
    kbuild: call make once for all targets when O=.. is used
    kbuild: pass -g to assembler under CONFIG_DEBUG_INFO
    kbuild: update _shipped files for kconfig syntax cleanup
    ...

    Fix up conflicts in arch/um/sys-{x86_64,i386}/Makefile manually.

    Linus Torvalds
     
  • 4c9e13851   uml: style fixes pass 1 ... Browse Code »

    Formatting changes in the files which have been changed in the
    tt-removal patchset so far. These include:
    copyright updates
    header file trimming
    style fixes
    adding severity to printks
    indenting Kconfig help according to the predominant kernel style

    These changes should be entirely non-functional.

    Signed-off-by: Jeff Dike
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Jeff Dike
     
  • 42fda6638   uml: throw out CONFIG_MODE_TT ... Browse Code »

    This patchset throws out tt mode, which has been non-functional for a while.

    This is done in phases, interspersed with code cleanups on the affected files.

    The removal is done as follows:
    remove all code, config options, and files which depend on
    CONFIG_MODE_TT
    get rid of the CHOOSE_MODE macro, which decided whether to
    call tt-mode or skas-mode code, and replace invocations with their
    skas portions
    replace all now-trivial procedures with their skas equivalents

    There are now a bunch of now-redundant pieces of data structures, including
    mode-specific pieces of the thread structure, pt_regs, and mm_context. These
    are all replaced with their skas-specific contents.

    As part of the ongoing style compliance project, I made a style pass over all
    files that were changed. There are three such patches, one for each phase,
    covering the files affected by that phase but no later ones.

    I noticed that we weren't freeing the LDT state associated with a process when
    it exited, so that's fixed in one of the later patches.

    The last patch is a tidying patch which I've had for a while, but which caused
    inexplicable crashes under tt mode. Since that is no longer a problem, this
    can now go in.

    This patch:

    Start getting rid of tt mode support.

    This patch throws out CONFIG_MODE_TT and all config options, code, and files
    which depend on it.

    CONFIG_MODE_SKAS is gone and everything that depends on it is included
    unconditionally.

    The few changed lines are in re-written Kconfig help, lines which needed
    something skas-related removed from them, and a few more which weren't
    strictly deletions.

    Signed-off-by: Jeff Dike
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Jeff Dike