linux-toradex.git/scripts/kallsyms.c, branch v2.6.23.9

Merge git://git.kernel.org/pub/scm/linux/kernel/git/sam/kbuild

2007-07-19T21:28:19+00:00

* git://git.kernel.org/pub/scm/linux/kernel/git/sam/kbuild: (33 commits)
  xtensa: use DATA_DATA in xtensa
  powerpc: add missing DATA_DATA to powerpc
  cris: use DATA_DATA in cris
  kallsyms: remove usage of memmem and _GNU_SOURCE from scripts/kallsyms.c
  kbuild: use -fno-optimize-sibling-calls unconditionally
  kconfig: reset generated values only if Kconfig and .config agree.
  kbuild: fix the warning when running make tags
  kconfig: strip 'CONFIG_' automatically in kernel configuration search
  kbuild: use POSIX BRE in headers install target
  Whitelist references from __dbe_table to .init
  modpost white list pattern adjustment
  kbuild: do section mismatch check on full vmlinux
  kbuild: whitelist references from variables named _timer to .init.text
  kbuild: remove hardcoded _logo names from modpost
  kbuild: remove hardcoded apic_es7000 from modpost
  kbuild: warn about references from .init.text to .exit.text
  kbuild: consolidate section checks
  kbuild: refactor code in modpost to improve maintainability
  kbuild: ignore section mismatch warnings originating from .note section
  kbuild: .paravirtprobe section is obsolete, so modpost doesn't need to handle it
  ...

kallsyms: make KSYM_NAME_LEN include space for trailing '\0'

2007-07-17T17:23:03+00:00

KSYM_NAME_LEN is peculiar in that it does not include the space for the
trailing '\0', forcing all users to use KSYM_NAME_LEN + 1 when allocating
buffer.  This is nonsense and error-prone.  Moreover, when the caller
forgets that it's very likely to subtly bite back by corrupting the stack
because the last position of the buffer is always cleared to zero.

This patch increments KSYM_NAME_LEN by one and updates code accordingly.

* off-by-one bug in asm-powerpc/kprobes.h::kprobe_lookup_name() macro
  is fixed.

* Where MODULE_NAME_LEN and KSYM_NAME_LEN were used together,
  MODULE_NAME_LEN was treated as if it didn't include space for the
  trailing '\0'.  Fix it.

Signed-off-by: Tejun Heo 
Acked-by: Paulo Marques 
Cc: Benjamin Herrenschmidt 
Cc: Paul Mackerras 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

kallsyms: remove usage of memmem and _GNU_SOURCE from scripts/kallsyms.c

2007-07-17T12:36:08+00:00

The only in-kernel user of "memmem" is scripts/kallsyms.c and it only
uses it to find tokens that are 2 bytes in size. It is trivial to
replace it with a simple function that finds 2-byte tokens.

This should help users from systems that don't have the memmem GNU
extension available.

Signed-off-by: Paulo Marques 
Signed-off-by: Sam Ravnborg

[PATCH] move kallsyms data to .rodata

2006-12-08T16:28:37+00:00

Kallsyms data is never written to, so it can as well benefit from
CONFIG_DEBUG_RODATA.

Signed-off-by: Jan Beulich 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

[PATCH] relocatable kernel: Fix kallsyms on avr32 after relocatable kernel changes

2006-12-07T01:14:10+00:00

o On some platforms like avr32, section init comes before .text and
  not necessarily a symbol's relative position w.r.t _text is positive.
  In such cases assembler detects the overflow and emits warning. This
  patch fixes it.

Signed-off-by: Vivek Goyal 
Signed-off-by: Andi Kleen 
Cc: Andi Kleen 
Cc: Haavard Skinnemoen 
Signed-off-by: Andrew Morton

[PATCH] relocatable kernel: Kallsyms generate relocatable symbols

2006-12-07T01:14:04+00:00

Print the addresses of non-absolute symbols relative to _text
so that ld will generate relocations.  Allowing a relocatable
kernel to relocate them.  We can't actually use the symbol names
because kallsyms includes static symbols that are not exported
from their object files.

Add the _text symbol definitions to the architectures which don't
define it otherwise linker will fail.

Signed-off-by: Eric W. Biederman 
Signed-off-by: Vivek Goyal 
Signed-off-by: Andi Kleen

[PATCH] kallsyms: handle malloc() failure

2006-03-25T16:22:56+00:00

This fixes coverity bugs #398 and #397

Signed-off-by: Jesper Juhl 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

[PATCH] Strip local symbols from kallsyms

2005-09-07T23:57:20+00:00

Local symbols generated by gcc start with a `$'; no point in including them
in the kernel.

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

[PATCH] kallsyms: change compression algorithm

2005-09-07T23:57:18+00:00

This patch changes the way the compression algorithm works.  The base
algorithm is similiar to the previous but we force the compressed token
size to 2.

Having a fixed size compressed token allows for a lot of optimizations, and
that in turn allows this code to run over *all* the symbols faster than it
did before over just a subset.

Having it work over all the symbols will make it behave better when symbols
change positions between passes, and the "inconsistent kallsyms" messages
should become less frequent.

In my tests the compression ratio was degraded by about 0.5%, but the
results will depend greatly on the number of symbols to compress.

Signed-off-by: Paulo Marques 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

[PATCH] kbuild: signed char fixes for scripts

2005-07-27T20:27:08+00:00

This time I did not break anything... and they shut up gcc4 ;)

Signed-off-by: Sam Ravnborg