linux.git/arch/powerpc/lib, branch v2.6.26

[POWERPC] Fix -Os kernel builds with newer gcc versions

2008-06-16T05:00:54+00:00

GCC 4.4.x looks to be adding support for generating out-of-line register
saves/restores based on:

http://gcc.gnu.org/ml/gcc-patches/2008-04/msg01678.html

This breaks the kernel if we enable CONFIG_CC_OPTIMIZE_FOR_SIZE.  To fix
this we add the use the save/restore code from gcc and simplified it down
for our needs (integer only).

Additionally, we have to link this code into each module.  The other
solution was to add EXPORT_SYMBOL() which meant going through the
trampoline which seemed nonsensical for these out-of-line routines.

Finally, we add some checks to prom_init_check.sh to ignore the
out-of-line save/restore functions.

Signed-off-by: Kumar Gala 
Signed-off-by: Paul Mackerras

[POWERPC] ppc: More compile fixes

2008-05-12T12:57:51+00:00

This fixes a few more miscellaneous compile problems with ARCH=ppc.

1. Don't compile devres.c on ARCH=ppc, it doesn't have ioremap_flags.
2. Include  in setup.c for the __DO_IRQ_CANON definition.
3. Include  in residual.c for the
   definition of create_proc_read_entry.
4. Fix xchg_ptr to be a static inline to eliminate a compiler warning.

Signed-off-by: Paul Mackerras

[POWERPC] devres: Add devm_ioremap_prot()

2008-05-05T06:47:14+00:00

We provide an ioremap_flags, so this provides a corresponding
devm_ioremap_prot.  The slight name difference is at Ben
Herrenschmidt's request as he plans on changing ioremap_flags to
ioremap_prot in the future.

Signed-off-by: Emil Medve 
Signed-off-by: Kumar Gala 
Acked-by: Tejun Heo 
Cc: Benjamin Herrenschmidt 
Signed-off-by: Andrew Morton 
Signed-off-by: Paul Mackerras

[POWERPC] Make rheap safe for spinlocks

2008-04-17T14:50:38+00:00

The rheap allocation function, rh_alloc, could call kmalloc with GFP_KERNEL.
This can sleep, which means you couldn't hold a spinlock while called rh_alloc.
Change all kmalloc calls to use GFP_ATOMIC so that it won't sleep.  This is
safe because only small blocks are allocated.

Signed-off-by: Timur Tabi 
Signed-off-by: Kumar Gala

[POWERPC] Add hand-coded assembly strcmp

2008-04-07T00:03:03+00:00

We have an assembly version of strncmp for the bootwrapper, but not
for the kernel, so we end up using the C version in the kernel.  This
takes the strncmp code from the bootup and copies it to the kernel
proper, adding two instructions so it copes correctly with len==0.

Signed-off-by: Steven Rostedt 
Signed-off-by: Paul Mackerras

[POWERPC] rheap: Changes config mechanism

2007-10-16T23:09:21+00:00

Instead of having in the makefile all the option that
requires rheap, we define a configuration symbol
and when needed we make sure it's selected.

Signed-off-by: Sylvain Munaut 
Signed-off-by: Grant Likely

[POWERPC] exports rheap symbol to modules

2007-10-16T23:09:02+00:00

Theses can be useful in modules too. So we export them.

Signed-off-by: Sylvain Munaut 
Signed-off-by: Grant Likely

[POWERPC] Limit range of __init_ref_ok somewhat

2007-10-03T01:48:44+00:00

This patch introduces zalloc_maybe_bootmem and uses it so that we don't
have to mark a whole (largish) routine as __init_ref_ok.

Signed-off-by: Stephen Rothwell 
Signed-off-by: Paul Mackerras

[POWERPC] Create and use CONFIG_WORD_SIZE

2007-10-02T23:12:02+00:00

Linus made this suggestion for the x86 merge and this starts the process
for powerpc.  We assume that CONFIG_PPC64 implies CONFIG_PPC_MERGE and
CONFIG_PPC_STD_MMU_32 implies CONFIG_PPC_STD_MMU.

Signed-off-by: Stephen Rothwell 
Signed-off-by: Paul Mackerras

[POWERPC] Fix section mismatch in PCI code

2007-09-19T05:25:34+00:00

Create a helper function (alloc_maybe_bootmem) that is marked __init_refok
to limit the chances of mistakenly referring to other __init routines.

WARNING: vmlinux.o(.text+0x2a9c4): Section mismatch: reference to .init.text:.__alloc_bootmem (between '.update_dn_pci_info' and '.pci_dn_reconfig_notifier')
WARNING: vmlinux.o(.text+0x36430): Section mismatch: reference to .init.text:.__alloc_bootmem (between '.mpic_msi_init_allocator' and '.find_ht_magic_addr')
WARNING: vmlinux.o(.text+0x5e804): Section mismatch: reference to .init.text:.__alloc_bootmem (between '.celleb_setup_phb' and '.celleb_fake_pci_write_config')
WARNING: vmlinux.o(.text+0x5e8e8): Section mismatch: reference to .init.text:.__alloc_bootmem (between '.celleb_setup_phb' and '.celleb_fake_pci_write_config')
WARNING: vmlinux.o(.text+0x5e968): Section mismatch: reference to .init.text:.__alloc_bootmem (between '.celleb_setup_phb' and '.celleb_fake_pci_write_config')

Signed-off-by: Stephen Rothwell 
Signed-off-by: Paul Mackerras