linux-toradex.git/scripts/Makefile.lib, branch tegra-9.12.14

kbuild: Fix size_append issue for bzip2/lzma kernel

2009-10-11T21:21:25+00:00

The Makefile.lib will call "echo -ne" to append uncompressed kernel size to
bzip2/lzma kernel image.
The "echo" here depends on the shell that /bin/sh pointing to.
On Ubuntu system, the /bin/sh is pointing to dash, which does not support
"echo -e" at all. Use /bin/echo instead of shell echo should always be safe.

Signed-off-by: Alek Du 
Acked-by: WANG Cong 
Signed-off-by: Sam Ravnborg

gcov: add gcov profiling infrastructure

2009-06-18T20:03:57+00:00

Enable the use of GCC's coverage testing tool gcov [1] with the Linux
kernel.  gcov may be useful for:

 * debugging (has this code been reached at all?)
 * test improvement (how do I change my test to cover these lines?)
 * minimizing kernel configurations (do I need this option if the
   associated code is never run?)

The profiling patch incorporates the following changes:

 * change kbuild to include profiling flags
 * provide functions needed by profiling code
 * present profiling data as files in debugfs

Note that on some architectures, enabling gcc's profiling option
"-fprofile-arcs" for the entire kernel may trigger compile/link/
run-time problems, some of which are caused by toolchain bugs and
others which require adjustment of architecture code.

For this reason profiling the entire kernel is initially restricted
to those architectures for which it is known to work without changes.
This restriction can be lifted once an architecture has been tested
and found compatible with gcc's profiling. Profiling of single files
or directories is still available on all platforms (see config help
text).

[1] http://gcc.gnu.org/onlinedocs/gcc/Gcov.html

Signed-off-by: Peter Oberparleiter 
Cc: Andi Kleen 
Cc: Huang Ying 
Cc: Li Wei 
Cc: Michael Ellerman 
Cc: Ingo Molnar 
Cc: Heiko Carstens 
Cc: Martin Schwidefsky 
Cc: Rusty Russell 
Cc: WANG Cong 
Cc: Sam Ravnborg 
Cc: Jeff Dike 
Cc: Al Viro 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

Merge branch 'x86-kbuild-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip

2009-06-10T22:30:41+00:00

* 'x86-kbuild-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (46 commits)
  x86, boot: add new generated files to the appropriate .gitignore files
  x86, boot: correct the calculation of ZO_INIT_SIZE
  x86-64: align __PHYSICAL_START, remove __KERNEL_ALIGN
  x86, boot: correct sanity checks in boot/compressed/misc.c
  x86: add extension fields for bootloader type and version
  x86, defconfig: update kernel position parameters
  x86, defconfig: update to current, no material changes
  x86: make CONFIG_RELOCATABLE the default
  x86: default CONFIG_PHYSICAL_START and CONFIG_PHYSICAL_ALIGN to 16 MB
  x86: document new bzImage fields
  x86, boot: make kernel_alignment adjustable; new bzImage fields
  x86, boot: remove dead code from boot/compressed/head_*.S
  x86, boot: use LOAD_PHYSICAL_ADDR on 64 bits
  x86, boot: make symbols from the main vmlinux available
  x86, boot: determine compressed code offset at compile time
  x86, boot: use appropriate rep string for move and clear
  x86, boot: zero EFLAGS on 32 bits
  x86, boot: set up the decompression stack as early as possible
  x86, boot: straighten out ranges to copy/zero in compressed/head*.S
  x86, boot: stylistic cleanups for boot/compressed/head_64.S
  ...

Fixed trivial conflict in arch/x86/configs/x86_64_defconfig manually

kbuild: allow compressors (gzip, bzip2, lzma) to take multiple inputs

2009-05-09T00:16:22+00:00

Allow the compression commands in Kbuild (i.e. gzip, bzip2, lzma) to
take multiple input files and emit the concatenated compressed
output.  This avoids an intermediate step when a kernel image is built
from multiple components, such as the relocatable x86-32 kernel.

Sam Ravnborg integrated the bin_size script into the Makefile.

[ Impact: new build feature, not yet used ]

Signed-off-by: H. Peter Anvin 
Acked-by: Sam Ravnborg

kbuild: introduce subdir-ccflags-y

2009-04-19T09:12:12+00:00

Following patch introduce support for setting options
to gcc that has effect for current directory and all
subdirectories.

The typical use case are an architecture or a subsystem that
decide to cover all files with -Werror.
Today alpha, mips and sparc uses -Werror in almost all their
Makefile- with subdir-ccflag-y it is now simpler to do so
as only the top-level directories needs to be covered.

Likewise if we decide to cover a full subsystem such
as net/ with -Werror this is done by adding a single
line to net/Makefile.

Signed-off-by: Sam Ravnborg 
Cc: Ingo Molnar 
Cc: "H. Peter Anvin" 
Cc: Thomas Gleixner

Merge branch 'core/percpu' into percpu-cpumask-x86-for-linus-2

2009-03-27T16:28:43+00:00

Conflicts:
	arch/parisc/kernel/irq.c
	arch/x86/include/asm/fixmap_64.h
	arch/x86/include/asm/setup.h
	kernel/irq/handle.c

Semantic merge:
        arch/x86/include/asm/fixmap.h

Signed-off-by: Ingo Molnar

dynamic debug: combine dprintk and dynamic printk

2009-03-24T23:38:26+00:00

This patch combines Greg Bank's dprintk() work with the existing dynamic
printk patchset, we are now calling it 'dynamic debug'.

The new feature of this patchset is a richer /debugfs control file interface,
(an example output from my system is at the bottom), which allows fined grained
control over the the debug output. The output can be controlled by function,
file, module, format string, and line number.

for example, enabled all debug messages in module 'nf_conntrack':

echo -n 'module nf_conntrack +p' > /mnt/debugfs/dynamic_debug/control

to disable them:

echo -n 'module nf_conntrack -p' > /mnt/debugfs/dynamic_debug/control

A further explanation can be found in the documentation patch.

Signed-off-by: Greg Banks 
Signed-off-by: Jason Baron 
Signed-off-by: Greg Kroah-Hartman

bzip2/lzma: handle failures from bzip2 and lzma correctly

2009-01-04T23:53:35+00:00

Impact: Bug fix

If bzip2 or lzma fails (for example, if they aren't installed on the
system), we need to propagate the failure out to "make".  However,
they were masked by being followed by a semicolon.

Signed-off-by: H. Peter Anvin

bzip2/lzma: library support for gzip, bzip2 and lzma decompression

2009-01-04T23:53:34+00:00

Impact: Replaces inflate.c with a wrapper around zlib_inflate; new library code

This is the first part of the bzip2/lzma patch

The bzip patch is based on an idea by Christian Ludwig, includes support for
compressing the kernel with bzip2 or lzma rather than gzip. Both
compressors give smaller sizes than gzip.  Lzma's decompresses faster
than bzip2.

It also supports ramdisks and initramfs' compressed using these two
compressors.

The functionality has been successfully used for a couple of years by
the udpcast project

This version applies to "tip" kernel 2.6.28

This part contains:
- changed inflate.c to accomodate rest of patch
- implementation of bzip2 compression (not used at this stage yet)
- implementation of lzma compression (not used at this stage yet)
- Makefile routines to support bzip2 and lzma kernel compression

Signed-off-by: Alain Knaff 
Signed-off-by: H. Peter Anvin

kbuild: expand -I in KBUILD_CPPFLAGS

2008-12-03T20:31:59+00:00

kbuild failed to expand include flags in KBUILD_CPPFLAGS
resulting in code like this in arch Makefiles:

ifeq ($(KBUILD_SRC),)
KBUILD_CPPFLAGS += -Iinclude/foo
else
KBUILD_CPPFLAGS += -I$(srctree)/include/foo
endif

Move use of LINUXINCLUDE into Makefile.lib to allow
us to expand -I directives of KBUILD_CPPFLAGS so
we can avoid the above code.

Signed-off-by: Sam Ravnborg