linux.git/arch/alpha/kernel/vmlinux.lds.S, branch v2.6.39

alpha: use L1_CACHE_BYTES for cacheline size in the linker script

2011-01-25T13:27:38+00:00

Currently the linker script uses 64 for cacheline size which isn't
optimal for all cases.  Include asm/cache.h and use L1_CACHE_BYTES
instead as suggested by Sam Ravnborg.

Signed-off-by: Tejun Heo 
Cc: Sam Ravnborg

percpu: align percpu readmostly subsection to cacheline

2011-01-25T13:26:50+00:00

Currently percpu readmostly subsection may share cachelines with other
percpu subsections which may result in unnecessary cacheline bounce
and performance degradation.

This patch adds @cacheline parameter to PERCPU() and PERCPU_VADDR()
linker macros, makes each arch linker scripts specify its cacheline
size and use it to align percpu subsections.

This is based on Shaohua's x86 only patch.

Signed-off-by: Tejun Heo 
Cc: Shaohua Li

alpha: Fix duplicate include

2009-09-27T21:46:05+00:00

.. duplicated by merging the same fix twice, for details see commit
0d9df2515dbceb67d343c0f10fd3ff218380d524 ("Merge
git://git.kernel.org/pub/scm/linux/kernel/git/sam/kbuild-fixes")

Signed-off-by: Linus Torvalds

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

2009-09-26T17:51:54+00:00

* git://git.kernel.org/pub/scm/linux/kernel/git/sam/kbuild-fixes:
  alpha: fix build after vmlinux.lds.S cleanup
  mips: fix build of vmlinux.lds

alpha: fix build after vmlinux.lds.S cleanup

2009-09-25T17:54:56+00:00

Add include to get missing THREAD_SIZE definition

Signed-off-by: Sam Ravnborg 
Cc: Tim Abbott 
Cc: Ivan Kokshaysky 
Cc: Richard Henderson

alpha: Clean up linker script using new linker script macros.

2009-09-25T00:16:22+00:00

Note that .data.page_aligned and .data.cacheline_aligned are now after
_data; it was probably a bug that they were before it.

Also, some explicit ALIGN(8)'s between various initcall sections were
removed; this should be harmless as the implicit alignment of
initcall_t was already 8.

Signed-off-by: Geoffrey Thomas 
Signed-off-by: Tim Abbott 
Cc: Ivan Kokshaysky 
Cc: Sam Ravnborg 
Signed-off-by: Richard Henderson 
Signed-off-by: Linus Torvalds

alpha: use .data.init_task instead of .data.init_thread.

2009-09-25T00:16:22+00:00

alpha is the only architecture that uses the section name
.data.init_thread instead of .data.init_task.  So convert alpha to use
.data.init_task like everything else.

.data.init_task does not need a separate output section; this change
also moves it into the .data output section.

Signed-off-by: Tim Abbott 
Cc: Richard Henderson 
Cc: linux-alpha@vger.kernel.org
Signed-off-by: Linus Torvalds

linker script: unify usage of discard definition

2009-07-09T02:27:40+00:00

Discarded sections in different archs share some commonality but have
considerable differences.  This led to linker script for each arch
implementing its own /DISCARD/ definition, which makes maintaining
tedious and adding new entries error-prone.

This patch makes all linker scripts to move discard definitions to the
end of the linker script and use the common DISCARDS macro.  As ld
uses the first matching section definition, archs can include default
discarded sections by including them earlier in the linker script.

ia64 is notable because it first throws away some ia64 specific
subsections and then include the rest of the sections into the final
image, so those sections must be discarded before the inclusion.

defconfig compile tested for x86, x86-64, powerpc, powerpc64, ia64,
alpha, sparc, sparc64 and s390.  Michal Simek tested microblaze.

Signed-off-by: Tejun Heo 
Acked-by: Paul Mundt 
Acked-by: Mike Frysinger 
Tested-by: Michal Simek 
Cc: linux-arch@vger.kernel.org
Cc: Michal Simek 
Cc: microblaze-uclinux@itee.uq.edu.au
Cc: Sam Ravnborg 
Cc: Tony Luck

linker script: throw away .discard section

2009-06-24T06:13:38+00:00

x86 throws away .discard section but no other archs do.  Also,
.discard is not thrown away while linking modules.  Make every arch
and module linking throw it away.  This will be used to define dummy
variables for percpu declarations and definitions.

This patch is based on Ivan Kokshaysky's alpha percpu patch.

[ Impact: always throw away everything in .discard ]

Signed-off-by: Tejun Heo 
Cc: Ivan Kokshaysky 
Cc: Richard Henderson 
Cc: Russell King 
Cc: Haavard Skinnemoen 
Cc: Bryan Wu 
Cc: Mikael Starvik 
Cc: Jesper Nilsson 
Cc: David Howells 
Cc: Yoshinori Sato 
Cc: Tony Luck 
Cc: Hirokazu Takata 
Cc: Geert Uytterhoeven 
Cc: Michal Simek 
Cc: Ralf Baechle 
Cc: Kyle McMartin 
Cc: Benjamin Herrenschmidt 
Cc: Paul Mackerras 
Cc: Martin Schwidefsky 
Cc: Heiko Carstens 
Cc: Paul Mundt 
Cc: David S. Miller 
Cc: Jeff Dike 
Cc: Chris Zankel 
Cc: Rusty Russell 
Cc: Ingo Molnar

alpha: convert to use __HEAD and HEAD_TEXT macros.

2009-04-26T16:20:38+00:00

This has the consequence of changing the section name use for head
code from ".text.head" to ".head.text".  Since this commit changes all
users in the architecture, this change should be harmless.

Signed-off-by: Tim Abbott 
Cc: Richard Henderson 
Acked-by: Sam Ravnborg 
Signed-off-by: Linus Torvalds