linux-toradex.git/arch/blackfin/kernel/vmlinux.lds.S, branch v3.9.3

Blackfin: make sure percpu section is aligned in XIP builds

2011-07-23T05:18:22+00:00

The alignment is normally handled by PERCPU(), but we need to do it
ourselves in the XIP build due to the custom layout.

Signed-off-by: Steven Miao 
Signed-off-by: Mike Frysinger

Blackfin: use new common PERCPU_INPUT define

2011-05-25T12:24:15+00:00

The Blackfin percpu input sections are outdated, so rather than update
them, drop them completely and use the new common define.

Signed-off-by: Mike Frysinger

percpu: Always align percpu output section to PAGE_SIZE

2011-03-24T17:50:09+00:00

Percpu allocator honors alignment request upto PAGE_SIZE and both the
percpu addresses in the percpu address space and the translated kernel
addresses should be aligned accordingly.  The calculation of the
former depends on the alignment of percpu output section in the kernel
image.

The linker script macros PERCPU_VADDR() and PERCPU() are used to
define this output section and the latter takes @align parameter.
Several architectures are using @align smaller than PAGE_SIZE breaking
percpu memory alignment.

This patch removes @align parameter from PERCPU(), renames it to
PERCPU_SECTION() and makes it always align to PAGE_SIZE.  While at it,
add PCPU_SETUP_BUG_ON() checks such that alignment problems are
reliably detected and remove percpu alignment comment recently added
in workqueue.c as the condition would trigger BUG way before reaching
there.

For um, this patch raises the alignment of percpu area.  As the area
is in .init, there shouldn't be any noticeable difference.

This problem was discovered by David Howells while debugging boot
failure on mn10300.

Signed-off-by: Tejun Heo 
Acked-by: Mike Frysinger 
Cc: uclinux-dist-devel@blackfin.uclinux.org
Cc: David Howells 
Cc: Jeff Dike 
Cc: user-mode-linux-devel@lists.sourceforge.net

Blackfin: SMP: work around anomaly 05000491

2011-03-18T08:01:04+00:00

In order to safely work around anomaly 05000491, we have to execute IFLUSH
from L1 instruction sram.  The trouble with multi-core systems is that all
L1 sram is visible only to the active core.  So we can't just place the
functions into L1 and call it directly.  We need to setup a jump table and
place the entry point in external memory.  This will call the right func
based on the active core.

In the process, convert from the manual relocation of a small bit of code
into Core B's L1 to the more general framework we already have in place
for loading arbitrary pieces of code into L1.

Signed-off-by: Sonic Zhang 
Signed-off-by: Mike Frysinger

Blackfin: SMP: PERCPU section should be PAGE aligned

2011-03-18T08:01:01+00:00

Common code checks the alignment of some of the variables and calls BUG()
if they aren't page aligned.

Signed-off-by: steven miao 
Signed-off-by: Mike Frysinger

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

Blackfin: use common EXCEPTION_TABLE() in vmlinux.lds

2010-08-06T16:55:45+00:00

Rather than do our own thing, use what common code provides.

Signed-off-by: Mike Frysinger

Blackfin: initial XIP support

2010-03-09T05:30:48+00:00

Signed-off-by: Barry Song 
Signed-off-by: Mike Frysinger

Blackfin: fix relocation errors with large initramfs images

2010-03-09T05:30:48+00:00

Since we are now discarding .exit.text at runtime instead of link time, we
need to place all .text sections ahead of the .data sections.  Otherwise,
a really large attached initramfs may cause link errors as it pushes the
PC relative relocations behind the limits of the Blackfin ISA (~16meg).
The instructions in the .exit.text are unable to call back into the .text
sections leading to a link failure.

Signed-off-by: Jie Zhang 
Signed-off-by: Mike Frysinger

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/vapier/blackfin

2009-12-16T18:52:35+00:00

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/vapier/blackfin: (88 commits)
  Blackfin: Convert BUG() to use unreachable()
  Blackfin: define __NR_recvmmsg
  Blackfin: drop duplicate sched_clock
  Blackfin: NOMPU: skip DMA ICPLB hole when it is redundant
  Blackfin: MPU: add missing __init markings
  Blackfin: add support for TIF_NOTIFY_RESUME
  Blackfin: kgdb_test: clean up code a bit
  Blackfin: convert kgdbtest to proc_fops
  Blackfin: convert cyc2ns() to clocksource_cyc2ns()
  Blackfin: ip0x: pull in asm/portmux.h for P_xxx defines
  Blackfin: drop unused ax88180 resources
  Blackfin: bf537-stamp: add ADF702x network driver resources
  Blackfin: bf537-stamp: add CAN resources
  Blackfin: bf537-stamp: add AD5258 i2c address
  Blackfin: bf537-stamp: add adau1761 i2c address
  Blackfin: bf537-stamp: add adau1371 i2c address
  Blackfin: bf537-stamp: add ADP8870 resources
  Blackfin: bf537-stamp: kill AD714x board-specific Kconfigs
  Blackfin: bf537-stamp: update ADP5520 resources
  Blackfin: bf537-stamp: add ADXL346 orientation sensing support
  ...