linux-stable.git/arch/tile/kernel/setup.c, branch v3.11.2

tile: delete __cpuinit usage from all tile files

2013-07-14T23:36:54+00:00

The __cpuinit type of throwaway sections might have made sense
some time ago when RAM was more constrained, but now the savings
do not offset the cost and complications.  For example, the fix in
commit 5e427ec2d0 ("x86: Fix bit corruption at CPU resume time")
is a good example of the nasty type of bugs that can be created
with improper use of the various __init prefixes.

After a discussion on LKML[1] it was decided that cpuinit should go
the way of devinit and be phased out.  Once all the users are gone,
we can then finally remove the macros themselves from linux/init.h.

Note that some harmless section mismatch warnings may result, since
notify_cpu_starting() and cpu_up() are arch independent (kernel/cpu.c)
are flagged as __cpuinit  -- so if we remove the __cpuinit from
arch specific callers, we will also get section mismatch warnings.
As an intermediate step, we intend to turn the linux/init.h cpuinit
content into no-ops as early as possible, since that will get rid
of these warnings.  In any case, they are temporary and harmless.

This removes all the arch/tile uses of the __cpuinit macros from
all C files.  Currently tile does not have any __CPUINIT used in
assembly files.

[1] https://lkml.org/lkml/2013/5/20/589

Cc: Chris Metcalf 
Signed-off-by: Paul Gortmaker

mm/tile: prepare for removing num_physpages and simplify mem_init()

2013-07-03T23:07:37+00:00

Prepare for removing num_physpages and simplify mem_init().

Signed-off-by: Jiang Liu 
Acked-by: Chris Metcalf 
Cc: Bjorn Helgaas 
Cc: "David S. Miller" 
Cc: Wen Congyang 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

tile: normalize global variables exported by vmlinux.lds

2013-07-03T23:07:34+00:00

Normalize global variables exported by vmlinux.lds to conform usage
guidelines from include/asm-generic/sections.h.

1) Use _text to mark the start of the kernel image including the head
text, and _stext to mark the start of the .text section.
2) Export mandatory global variables __init_begin and __init_end.

Signed-off-by: Jiang Liu 
Acked-by: Chris Metcalf 
Cc: Rusty Russell 
Cc: Bjorn Helgaas 
Cc: "David S. Miller" 
Cc: Wen Congyang 
Cc: David Howells 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

tile: expect new initramfs name from hypervisor file system

2013-03-29T19:11:49+00:00

The current Tilera boot infrastructure now provides the initramfs
to Linux as a Tilera-hypervisor file named "initramfs", rather than
"initramfs.cpio.gz", as before.  (This makes it reasonable to use
other compression techniques than gzip on the file without having to
worry about the name causing confusion.)  Adapt to use the new name,
but also fall back to checking for the old name.

Cc'ing to stable so that older kernels will remain compatible with
newer Tilera boot infrastructure.

Signed-off-by: Chris Metcalf 
Cc: stable@vger.kernel.org

tile: provide "screen_info" when enabling VT

2013-02-04T17:53:14+00:00

This avoids a link-time failure when building allyesconfig.

Signed-off-by: Chris Metcalf

tile: updates to pci root complex from community feedback

2012-07-18T20:54:16+00:00

Reviewed-by: Bjorn Helgaas 
Signed-off-by: Chris Metcalf

tile pci: enable IOMMU to support DMA for legacy devices

2012-07-18T20:40:17+00:00

This change uses the TRIO IOMMU to map the PCI DMA space and physical
memory at different addresses.  We also now use the dma_mapping_ops
to provide support for non-PCI DMA, PCIe DMA (64-bit) and legacy PCI
DMA (32-bit).  We use the kernel's software I/O TLB framework
(i.e. bounce buffers) for the legacy 32-bit PCI device support since
there are a limited number of TLB entries in the IOMMU and it is
non-trivial to handle indexing, searching, matching, etc.  For 32-bit
devices the performance impact of bounce buffers should not be a concern.

Signed-off-by: Chris Metcalf

arch/tile: enable ZONE_DMA for tilegx

2012-07-18T20:40:11+00:00

This is required for PCI root complex legacy support and USB OHCI root
complex support.  With this change tilegx now supports allocating memory
whose PA fits in 32 bits.

Signed-off-by: Chris Metcalf

arch/tile: tilegx PCI root complex support

2012-07-18T20:39:11+00:00

This change implements PCIe root complex support for tilegx using
the kernel support layer for accessing the TRIO hardware shim.

Reviewed-by: Bjorn Helgaas  [changes in 07487f3]
Signed-off-by: Chris Metcalf

tile: add #include to unbreak build after generic init_task conversion

2012-06-06T15:29:35+00:00

Some code was moved from init_task.c to setup.c but the appropriate
header needed to be moved as well.

Signed-off-by: Chris Metcalf