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  1. 03 Jan, 2011 1 commit
  3. 23 Dec, 2010 1 commit
    • Dirk Brandewie's avatar
      of: Add support for linking device tree blobs into vmlinux · aab94339
      Dirk Brandewie authored 
      
This patch adds support for linking device tree blob(s) into
vmlinux. Modifies asm-generic/vmlinux.lds.h to add linking
.dtb sections into vmlinux. To maintain compatiblity with the of/fdt
driver code platforms MUST copy the blob to a non-init memory location
before the kernel frees the .init.* sections in the image.

Modifies scripts/Makefile.lib to add a kbuild command to
compile DTS files to device tree blobs and a rule to create objects to
wrap the blobs for linking.

STRUCT_ALIGNMENT is defined in vmlinux.lds.h for use in the rule to
create wrapper objects for the dtb in Makefile.lib.  The
STRUCT_ALIGN() macro in vmlinux.lds.h is modified to use the
STRUCT_ALIGNMENT definition.

The DTB's are placed on 32 byte boundries to allow parsing the blob
with driver/of/fdt.c during early boot without having to copy the blob
to get the structure alignment GCC expects.

A DTB is linked in by adding the DTB object to the list of objects to
be linked into vmlinux in the archtecture specific Makefile using
   obj-y += foo.dtb.o
Signed-off-by: default avatarDirk Brandewie <dirk.brandewie@gmail.com>
Acked-by: default avatarMichal Marek <mmarek@suse.cz>
[grant.likely@secretlab.ca: cleaned up whitespace inconsistencies]
Signed-off-by: default avatarGrant Likely <grant.likely@secretlab.ca>
      aab94339
  5. 02 Dec, 2010 2 commits
  7. 24 Nov, 2010 1 commit
  9. 22 Nov, 2010 2 commits
  11. 18 Nov, 2010 1 commit
    • Randy Dunlap's avatar
      kernel-doc: escape xml for structs · 2b35f4d9
      Randy Dunlap authored 
      
scripts/kernel-doc was leaving unescaped '<', '>', and '&' in
generated xml output for structs.  This causes xml parser errors.
Convert these characters to "&lt;", "&gt;", and "&amp;" as needed
to prevent errors.

Most of the conversion was already done; complete it just before
output.

Documentation/DocBook/device-drivers.xml:41883: parser error : StartTag: invalid element name
#define INPUT_KEYMAP_BY_INDEX	(1 << 0)
Signed-off-by: default avatarRandy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      2b35f4d9
  13. 01 Nov, 2010 1 commit
  15. 30 Oct, 2010 1 commit
    • Thomas Gleixner's avatar
      semaphore: Remove mutex emulation · 4882720b
      Thomas Gleixner authored 
      
Semaphores used as mutexes have been deprecated for years. Now that
all users are either converted to real semaphores or to mutexes remove
the cruft.
Signed-off-by: default avatarThomas Gleixner <tglx@linutronix.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Christoph Hellwig <hch@infradead.org>
LKML-Reference: <20100907125057.562399240@linutronix.de>
      4882720b
  17. 29 Oct, 2010 7 commits
    • Wu Zhangjin's avatar
      ftrace/MIPS: Add module support for C version of recordmcount · 412910cd
      Wu Zhangjin authored 
      
Since MIPS modules' address space differs from the core kernel space, to access
the _mcount in the core kernel, the kernel functions in modules must use long
call (-mlong-calls): load the _mcount address into one register and jump to the
address stored by the register:

 c:  3c030000        lui     v1,0x0  <-------->  b label
           c: R_MIPS_HI16  _mcount
           c: R_MIPS_NONE  *ABS*
           c: R_MIPS_NONE  *ABS*
10:  64630000        daddiu  v1,v1,0
          10: R_MIPS_LO16 _mcount
          10: R_MIPS_NONE *ABS*
          10: R_MIPS_NONE *ABS*
14:	03e0082d 	move	at,ra
18:	0060f809 	jalr	v1
label:

In the old Perl version of recordmcount, we only need to record the position of
the 1st R_MIPS_HI16 type of _mcount, and later, in ftrace_make_nop(), replace
the instruction in this position by a "b label" and in ftrace_make_call(),
replace it back.

But, the default C version of recordmcount records all of the _mcount symbols,
so, we must filter the 2nd _mcount like the Perl version of recordmcount does.

The C version of recordmcount copes with the symbols before they are linked, So
It doesn't know the type of the symbols and therefore can not filter the
symbols as the Perl version of recordmcount does. But as we can see above, the
2nd _mcount symbols of the long call alawys follows the 1st _mcount symbol of
the same long call, which means the offset from the 1st to the 2nd is fixed, it
is 0x10-0xc = 4 here, 4 is the length of the 1st load instruciton, for MIPS has
fixed length of instructions, this offset is always 4.

And as we know, the _mcount is inserted into the entry of every kernel
function, the offset between the other _mcount's is expected to be always
bigger than 4. So, to filter the 2ns _mcount symbol of the long call, we can
simply check the offset between two _mcount symbols, If it is 4, then, filter
the 2nd _mcount symbol.

To avoid touching too much code, an 'empty' function fn_is_fake_mcount() is
added for all of the archs, and the specific archs can override it via chaning
the function pointer: is_fake_mcount in do_file() with the e_machine. e.g. This
patch adds MIPS_is_fake_mcount() to override the default fn_is_fake_mcount()
pointed by is_fake_mcount.

This fn_is_fake_mcount() checks if the _mcount symbol is fake, e.g. the 2nd
_mcount symbol of the long call is fake, for there are 2 _mcount symbols mapped
to one real mcount call, so, one of them is fake and must be filtered.

This fn_is_fake_mcount() is called in sift_rel_mcount() after finding the
_mcount symbols and before adding the _mcount symbol into mrelp, so, it can
prevent the fake mcount symbol going into the last __mcount_loc table.
Signed-off-by: default avatarWu Zhangjin <wuzhangjin@gmail.com>
LKML-Reference: <b866f0138224340a132d31861fa3f9300dee30ac.1288176026.git.wuzhangjin@gmail.com>
Signed-off-by: default avatarSteven Rostedt <rostedt@goodmis.org>
Signed-off-by: default avatarRalf Baechle <ralf@linux-mips.org>
      412910cd
    • John Reiser's avatar
      ftrace/MIPS: Add MIPS64 support for C version of recordmcount · a2d49358
      John Reiser authored 
      MIPS64 has 'weird' Elf64_Rel.r_info[1,2], which must be used instead of
the generic Elf64_Rel.r_info, otherwise, the C version of recordmcount
will not work for "segmentation fault".

Usage of "union mips_r_info" and the functions MIPS64_r_sym() and
MIPS64_r_info() written by Maciej W. Rozycki <macro@linux-mips.org>

----
[1] http://techpubs.sgi.com/library/manuals/4000/007-4658-001/pdf/007-4658-001.pdf


[2] arch/mips/include/asm/module.h
Tested-by: default avatarWu Zhangjin <wuzhangjin@gmail.com>
Signed-off-by: default avatarJohn Reiser <jreiser@BitWagon.com>
Signed-off-by: default avatarMaciej W. Rozycki <macro@linux-mips.org>
LKML-Reference: <AANLkTinwXjLAYACUfhLYaocHD_vBbiErLN3NjwN8JqSy@mail.gmail.com>
LKML-Reference: <910dc2d5ae1ed042df4f96815fe4a433078d1c2a.1288176026.git.wuzhangjin@gmail.com>
Signed-off-by: default avatarSteven Rostedt <rostedt@goodmis.org>
Signed-off-by: default avatarRalf Baechle <ralf@linux-mips.org>
      a2d49358
    • Steven Rostedt's avatar
      kconfig: Have streamline_config process menuconfigs too · 8ef17fa2
      Steven Rostedt authored 
      
Some menuconfigs in the Kconfig files have prompts and dependencies.
Currently, streamline_config misses these, and this can cause
streamline_config to keep modules enabled that should not be, and
even worse, not enable those that should.

This patch makes streamline_config process menuconfigs just like it
would process a config.
Reported-by: default avatarmember graysky <graysky@archlinux.us>
Signed-off-by: default avatarSteven Rostedt <rostedt@goodmis.org>
      8ef17fa2
    • Steven Rostedt's avatar
      kconfig: Fix streamline_config to read multi line deps in Kconfig files · 20d19047
      Steven Rostedt authored 
      
I noticed that some Kconfig files have multi line dependencies
that continue with a backslash. Those dependencies on the next
line will be missed by streamline_config.

For example:

config CS89x0
	tristate "CS89x0 support"
	depends on NET_ETHERNET && (ISA || EISA || MACH_IXDP2351 \
		|| ARCH_IXDP2X01 || MACH_MX31ADS)

The "|| ARCH_IXDP2X01 || MACH_MX31ADS)" will not be processed.

This patch adds code to handle this case.
Signed-off-by: default avatarSteven Rostedt <rostedt@goodmis.org>
      20d19047
    • hiromu's avatar
      kconfig: Fix missing declaration of variable $dir in streamline_config.pl · cf5a189d
      hiromu authored 
      
On Fri, Aug 17, 2010 at 01:43PM +0800, Américo Wang wrote:
> Acked-by: WANG Cong <xiyou.wangcong@gmail.com>
>
> BTW, I think we should add "use strict;" too.

Then I added "use strict;" to streamline_config.pl, I saw another
warning.

> Global symbol "$dir" requires explicit package name at
scripts/kconfig/streamline_config.pl line 286.
> Global symbol "$dir" requires explicit package name at
scripts/kconfig/streamline_config.pl line 287.
> Global symbol "$dir" requires explicit package name at
scripts/kconfig/streamline_config.pl line 288.

Then I added "my $dir;" to line 285.

Cc: Américo Wang <xiyou.wangcong@gmail.com>
Cc: Toralf Foerster <toralf.foerster@gmx.de>
Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: default avatarHiromu Yakura <hiromu1996@gmail.com>
LKML-Reference: <1282042158.7160.9.camel@hiromu-Macbook>

[ changed to just add my in front of $dir instead of new line ]
Signed-off-by: default avatarSteven Rostedt <rostedt@goodmis.org>
      cf5a189d
    • hiromu yagura's avatar
      kconfig: Fix variable name typo %prompts in streamline_config.pl · ccece60a
      hiromu yagura authored 
      
When I added "use strict;" to streamline_config.pl, I saw the following
warnings:

> Global symbol "%prompt" requires explicit package name at
scripts/kconfig/streamline_config.pl line 183.
> Global symbol "%prompt" requires explicit package name at
scripts/kconfig/streamline_config.pl line 368.

The declaration of %prompt was incorrect, and should have been %prompts.

Cc: Toralf Foerster <toralf.foerster@gmx.de>
Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: default avatarHiromu Yakura <hiromu1996@gmail.com>
LKML-Reference: <1281845597.11566.5.camel@camp10-laptop>
Signed-off-by: default avatarSteven Rostedt <rostedt@goodmis.org>
      ccece60a
    • Steven Rostedt's avatar
      kconfig: Make localmodconfig handle environment variables · 4908980b
      Steven Rostedt authored 
      The commit 838a2e55


 kbuild: migrate all arch to the kconfig mainmenu upgrade

Broke make localmodconfig. The reason was that it added a
environment variable to the kconfig source, which the
streamline_config.pl could not handle.

This patch changes streamline_config.pl to handle kconfig sources
using environment variables in their names.

Cc: Arnaud Lacombe <lacombar@gmail.com>
Cc: Sam Ravnborg <sam@ravnborg.org>
Cc: Michal Marek <mmarek@suse.cz>
Signed-off-by: default avatarSteven Rostedt <rostedt@goodmis.org>
      4908980b
  19. 28 Oct, 2010 1 commit
  21. 27 Oct, 2010 11 commits
  23. 26 Oct, 2010 11 commits