linux-stable.git/arch/metag/include, branch linux-3.9.y

metag: remove SET_PERSONALITY()

2013-03-04T10:27:20+00:00

Commit e72837e3e7bae3f182c4ac63c9424e86f1158dd0 ("default
SET_PERSONALITY() in linux/elf.h").

The above commit moved the common definition of SET_PERSONALITY() in a
bunch of the arch headers to linux/elf.h. Metag shares that common
definition so remove it from arch/metag/include/asm/elf.h too.

Signed-off-by: James Hogan

metag: Provide dma_get_sgtable()

2013-03-02T20:11:17+00:00

metag/allmodconfig:

drivers/media/v4l2-core/videobuf2-dma-contig.c: In function 'vb2_dc_get_base_sgt':
drivers/media/v4l2-core/videobuf2-dma-contig.c:387: error: implicit declaration of function 'dma_get_sgtable'

For architectures using dma_map_ops, dma_get_sgtable() is provided in
.

Metag does not use dma_map_ops yet, hence it should implement it as an
inline stub using dma_common_get_sgtable().

Signed-off-by: James Hogan 
Cc: Geert Uytterhoeven 
Acked-by: Marek Szyprowski

metag: prom.h: remove declaration of metag_dt_memblock_reserve()

2013-03-02T20:11:17+00:00

Metag doesn't have a metag_dt_memblock_reserve() function so remove the
declaration from asm/prom.h.

Signed-off-by: James Hogan

metag: copy devicetree to non-init memory

2013-03-02T20:11:17+00:00

Make a copy of the device tree blob in non-init memory. It is required
when using built-in device tree files that the platform code copies the
blob to non-init memory prior to calling unflatten_device_tree(),
otherwise the strings that the device tree refer to will get poisoned
and potentially reused, breaking later reading of the device tree
post-init (such as compatible matching in modules, debugfs, and the
procfs interface).

Signed-off-by: James Hogan 
Reviewed-by: Vineet Gupta

metag: move irq enable out of irqflags.h on SMP

2013-03-02T20:11:14+00:00

The SMP version of arch_local_irq_enable() uses preempt_disable(), but
 doesn't include  causing the following
errors on SMP when pstore/ftrace is enabled (caught by buildbot smp
allyesconfig):

In file included from include/linux/irqflags.h:15,
                 from fs/pstore/ftrace.c:16:
arch/metag/include/asm/irqflags.h: In function 'arch_local_irq_enable':
arch/metag/include/asm/irqflags.h:84: error: implicit declaration of function 'preempt_disable'
arch/metag/include/asm/irqflags.h:86: error: implicit declaration of function 'preempt_enable_no_resched'

However  cannot be easily included from
 as it can cause circular include dependencies in the
!SMP case, and potentially in the SMP case in the future. Therefore move
the SMP implementation of arch_local_irq_enable() into traps.c and use
an inline version of get_trigger_mask() which is also defined in traps.c
for SMP.

This adds an extra layer of function call / stack push when
preempt_disable needs to call other functions, however in the
non-preemptive SMP case it should be about as fast, as it was already
calling the get_trigger_mask() function which is now used inline.

Signed-off-by: James Hogan

metag: protect more non-MMU memory regions

2013-03-02T20:09:58+00:00

Rename setup_txprivext() to setup_priv() and add initialisation of some
more per-thread privilege protection registers:

 - TxPRIVSYSR: 0x04400000-0x047fffff
               0x05000000-0x07ffffff
               0x84000000-0x87ffffff
 - TxPIOREG:   0x02000000-0x02ffffff
               0x04800000-0x048fffff
 - TxSYREG:    0x04000000-0x04000fff (except write fetch system event)

Signed-off-by: James Hogan

metag: make TXPRIVEXT bits explicit

2013-03-02T20:09:58+00:00

Define PRIV_BITS using explicit constants from  rather
than with a hard coded value. This also adds a couple of missing
definitions for the TXPRIVEXT priv bits for protecting writes to TXTIMER
and the trace registers.

Signed-off-by: James Hogan

metag: Add JTAG Debug Adapter (DA) support

2013-03-02T20:09:56+00:00

Add basic JTAG Debug Adapter (DA) support so that drivers which
communicate with the DA can detect whether one is actually present
(otherwise the target will halt indefinitely).

This allows the metag_da TTY driver and imgdafs filesystem driver to be
built, updates defconfigs, and sets up the metag_da console early if
it's configured in.

Signed-off-by: James Hogan

metag: ftrace support

2013-03-02T20:09:55+00:00

Add ftrace support for metag.

Signed-off-by: James Hogan 
Cc: Frederic Weisbecker 
Cc: Ingo Molnar 
Reviewed-by: Steven Rostedt

metag: Perf

2013-03-02T20:09:54+00:00

Add Perf support for metag.

Signed-off-by: James Hogan 
Cc: Peter Zijlstra 
Cc: Paul Mackerras 
Cc: Ingo Molnar 
Cc: Arnaldo Carvalho de Melo