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  1. 14 Dec, 2010 1 commit
  3. 02 Dec, 2010 1 commit
    • Thomas Chou's avatar
      gen_init_cpio: remove leading `/' from file names · 43f901fb
      Thomas Chou authored 
      When we extracted the generated cpio archive using "cpio -id" command,
it complained,

cpio: Removing leading `/' from member names
var/run
cpio: Removing leading `/' from member names
var/lib
cpio: Removing leading `/' from member names
var/lib/misc

It is worse with the latest "cpio" or "pax", which tries to overwrite
the host file system with the leading '/'.

So the leading '/' of file names should be removed. This is consistent
with the initramfs come with major distributions such as Fedora or
Debian, etc.
Signed-off-by: default avatarThomas Chou <thomas@wytron.com.tw>
Acked-by: Mike Frysinger<vapier@gentoo.org>
Signed-off-by: default avatarMichal Marek <mmarek@suse.cz>
      43f901fb
  5. 25 Nov, 2010 1 commit
  7. 11 Nov, 2010 1 commit
    • Eric Dumazet's avatar
      fixdep: use hash table instead of a single array · 8af27e1d
      Eric Dumazet authored 
      I noticed fixdep uses ~2% of cpu time in kernel build, in function
use_config()

fixdep spends a lot of cpu cycles in linear searches in its internal
string array. With about 400 stored strings per dep file, this begins to
be noticeable.

Convert fixdep to use a hash table.

kbuild results on my x86_64 allmodconfig

Before patch :

real	10m30.414s
user	61m51.456s
sys	8m28.200s

real	10m12.334s
user	61m50.236s
sys	8m30.448s

real	10m42.947s
user	61m50.028s
sys	8m32.380s

After:

real	10m8.180s
user	61m22.506s
sys	8m32.384s

real	10m35.039s
user	61m21.654s
sys	8m32.212s

real	10m14.487s
user	61m23.498s
sys	8m32.312s
Signed-off-by: default avatarEric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: default avatarMichal Marek <mmarek@suse.cz>
      8af27e1d
  9. 28 Oct, 2010 1 commit
  11. 29 Sep, 2010 3 commits
    • Hendrik Brueckner's avatar
      initramfs: fix initramfs size calculation · ffe8018c
      Hendrik Brueckner authored 
      The size of a built-in initramfs is calculated in init/initramfs.c by
"__initramfs_end - __initramfs_start".  Those symbols are defined in the
linker script include/asm-generic/vmlinux.lds.h:

#define INIT_RAM_FS                                                     \
        . = ALIGN(PAGE_SIZE);                                           \
        VMLINUX_SYMBOL(__initramfs_start) = .;                          \
        *(.init.ramfs)                                                  \
        VMLINUX_SYMBOL(__initramfs_end) = .;

If the initramfs file has an odd number of bytes, the "__initramfs_end"
symbol points to an odd address, for example, the symbols in the
System.map might look like:

    0000000000572000 T __initramfs_start
    00000000005bcd05 T __initramfs_end	  <-- odd address

At least on s390 this causes a problem:

Certain s390 instructions, especially instructions for loading addresses
(larl) or branch addresses must be on even addresses.  The compiler loads
the symbol addresses with the "larl" instruction.  This instruction sets
the last bit to 0 and, therefore, for odd size files, the calculated size
is one byte less than it should be:

    0000000000540a9c <populate_rootfs>:
      540a9c:     eb cf f0 78 00 24       stmg    %r12,%r15,120(%r15),
      540aa2:     c0 10 00 01 8a af       larl    %r1,572000 <__initramfs_start>
      540aa8:     c0 c0 00 03 e1 2e       larl    %r12,5bcd04 <initramfs_end>
                                                  (Instead of  5bcd05)
      ...
      540abe:     1b c1                   sr      %r12,%r1

To fix the problem, this patch introduces the global variable
__initramfs_size, which is calculated in the "usr/initramfs_data.S" file.
The populate_rootfs() function can then use the start marker of the
.init.ramfs section and the value of __initramfs_size for loading the
initramfs.  Because the start marker and size is sufficient, the
__initramfs_end symbol is no longer needed and is removed.
Signed-off-by: default avatarMichael Holzheu <holzheu@linux.vnet.ibm.com>
Signed-off-by: default avatarHendrik Brueckner <brueckner@linux.vnet.ibm.com>
Reviewed-by: default avatarWANG Cong <xiyou.wangcong@gmail.com>
Acked-by: default avatarMichal Marek <mmarek@suse.cz>
Acked-by: default avatar"H. Peter Anvin" <hpa@zytor.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarMichal Marek <mmarek@suse.cz>
      ffe8018c
    • Hendrik Brueckner's avatar
      initramfs: generalize initramfs_data.xxx.S variants · 6ae64e42
      Hendrik Brueckner authored 
      Remove initramfs_data.{lzo,lzma,gz,bz2}.S variants and use a common
implementation in initramfs_data.S.  The common implementation expects the
file name of the initramfs to be defined in INITRAMFS_IMAGE.

Change the Makefile to set the INITRAMFS_IMAGE define symbol according
to the selected compression method.
Signed-off-by: default avatarHendrik Brueckner <brueckner@linux.vnet.ibm.com>
Cc: WANG Cong <xiyou.wangcong@gmail.com>
Acked-by: default avatarMichal Marek <mmarek@suse.cz>
Acked-by: default avatar"H. Peter Anvin" <hpa@zytor.com>
Cc: Hendrik Brueckner <brueckner@linux.vnet.ibm.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarMichal Marek <mmarek@suse.cz>
      6ae64e42
    • Jean Sacren's avatar
      scripts/kallsyms: Enable error messages while hush up unnecessary warnings · ef894870
      Jean Sacren authored 
      As no error was handled, we wouldn't be able to know when an error does
occur. The fix preserves error messages while it doesn't let unnecessary
compiling warnings show up.
Signed-off-by: default avatarJean Sacren <sakiwit@gmail.com>
Signed-off-by: default avatarMichal Marek <mmarek@suse.cz>
      ef894870
  13. 13 Sep, 2010 1 commit
  15. 06 Sep, 2010 2 commits
  17. 03 Sep, 2010 1 commit
  19. 26 Aug, 2010 1 commit
  21. 12 Aug, 2010 1 commit
  23. 10 Aug, 2010 1 commit
  25. 04 Aug, 2010 1 commit
  27. 03 Aug, 2010 5 commits
    • Denys Vlasenko's avatar
      modpost: support objects with more than 64k sections · 1ce53adf
      Denys Vlasenko authored 
      This patch makes modpost able to process object files with more than
64k sections. Needed for huge kernel builds (allyesconfig, for example)
with -ffunction-sections. 64k sections handling is covered, for example,
by this document:

"IA-64 gABI Proposal 74: Section Indexes"
http://www.codesourcery.com/public/cxx-abi/abi/prop-74-sindex.htmlSigned-off-by: default avatarDenys Vlasenko <vda.linux@googlemail.com>
Signed-off-by: default avatarAnders Kaseorg <andersk@mit.edu>
Acked-by: default avatarSam Ravnborg <sam@ravnborg.org>
Cc: Rusty Russell <rusty@rustcorp.com.au>
Cc: Andi Kleen <andi@firstfloor.org>
Signed-off-by: default avatarMichal Marek <mmarek@suse.cz>
      1ce53adf
    • Uwe Kleine-König's avatar
      trivial: fix a typo in a filename · 4696e295
      Uwe Kleine-König authored 
      Signed-off-by: default avatarUwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: default avatarMichal Marek <mmarek@suse.cz>
      4696e295
    • Sam Ravnborg's avatar
      frv: clean up arch/frv/Makefile · c9575dc6
      Sam Ravnborg authored 
      - removed a lot of unused variable assignmnets
- removed unused bootstrap target
- replaced ARCHMODFLAGS with proper KBUILD_{A,C}FLAGS_MODULE assignmnets

The resuting Makefile has not been tested due to lack of toolchain,
but these were all trivial changes.
Signed-off-by: default avatarSam Ravnborg <sam@ravnborg.org>
Cc: David Howells <dhowells@redhat.com>
Signed-off-by: default avatarMichal Marek <mmarek@suse.cz>
      c9575dc6
    • Sam Ravnborg's avatar
      kbuild: allow assignment to {A,C}FLAGS_KERNEL on the command line · 80c00ba9
      Sam Ravnborg authored 
      It is now possible to assign options to AS and CC
on the command line - which is only used for built-in code.

{A,C}FLAGS_KERNEL was used both in the top-level Makefile
in the arch makefiles, thus users had no way to specify
additional options to AS, CC without overriding
the original value.

Introduce a new set of variables KBUILD_{A,C}FLAGS_KERNEL
that is used by arch specific files and free up
{A,C}FLAGS_KERNEL so they can be assigned on
the command line.

All arch Makefiles that used the old variables has been updated.
Signed-off-by: default avatarSam Ravnborg <sam@ravnborg.org>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Hirokazu Takata <takata@linux-m32r.org>
Signed-off-by: default avatarMichal Marek <mmarek@suse.cz>
      80c00ba9
    • Sam Ravnborg's avatar
      kbuild: allow assignment to {A,C,LD}FLAGS_MODULE on the command line · 6588169d
      Sam Ravnborg authored 
      It is now possible to assign options to AS, CC and LD
on the command line - which is only used when building modules.

{A,C,LD}FLAGS_MODULE was all used both in the top-level Makefile
in the arch makefiles, thus users had no way to specify
additional options to AS, CC, LD when building modules
without overriding the original value.

Introduce a new set of variables KBUILD_{A,C,LD}FLAGS_MODULE
that is used by arch specific files and free up
{A,C,LD}FLAGS_MODULE so they can be assigned on
the command line.

All arch Makefiles that used the old variables has been updated.

Note: Previously we had a MODFLAGS variable for both
AS and CC. But in favour of consistency this was dropped.
So in some cases arch Makefile has one assignmnet replaced by
two assignmnets.

Note2: MODFLAGS was not documented and is dropped
without any notice. I do not expect much/any breakage
from this.
Signed-off-by: default avatarSam Ravnborg <sam@ravnborg.org>
Cc: Denys Vlasenko <vda.linux@googlemail.com>
Cc: Haavard Skinnemoen <hskinnemoen@atmel.com>
Cc: Mike Frysinger <vapier@gentoo.org>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Chen Liqin <liqin.chen@sunplusct.com>
Acked-by: Mike Frysinger <vapier@gentoo.org> [blackfin]
Acked-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com> [avr32]
Signed-off-by: default avatarMichal Marek <mmarek@suse.cz>
      6588169d
  29. 01 Aug, 2010 2 commits
  31. 31 Jul, 2010 5 commits
  33. 30 Jul, 2010 8 commits
  35. 29 Jul, 2010 4 commits
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