Commit graph

3949 commits

Author SHA1 Message Date
Paul Mackerras
3cecdda3f1 Merge branch 'for-2.6.25' of master.kernel.org:/pub/scm/linux/kernel/git/arnd/cell-2.6 into merge 2008-03-03 21:31:09 +11:00
Michael Ellerman
da40451bba [POWERPC] Convert the cell IOMMU fixed mapping to 16M IOMMU pages
The only tricky part is we need to adjust the PTE insertion loop to
cater for holes in the page table. The PTEs for each segment start on
a 4K boundary, so with 16M pages we have 16 PTEs per segment and then
a gap to the next 4K page boundary.

It might be possible to allocate the PTEs for each segment separately,
saving the memory currently filling the gaps. However we'd need to
check that's OK with the hardware, and that it actually saves memory.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2008-03-03 08:03:15 +01:00
Michael Ellerman
225d49050f [POWERPC] Allow for different IOMMU page sizes in cell IOMMU code
Make some preliminary changes to cell_iommu_alloc_ptab() to allow it to
take the page size as a parameter rather than assuming IOMMU_PAGE_SIZE.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2008-03-03 08:03:15 +01:00
Michael Ellerman
3d3e6da17d [POWERPC] Cell IOMMU: n_pte_pages is in 4K page units, not IOMMU_PAGE_SIZE
We use n_pte_pages to calculate the stride through the page tables, but
we also use it to set the NPPT value in the segment table entry. That is
defined as the number of 4K pages per segment, so we should calculate
it as such regardless of the IOMMU page size.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2008-03-03 08:03:15 +01:00
Michael Ellerman
7d432ff1b7 [POWERPC] Split setup of IOMMU stab and ptab, allocate dynamic/fixed ptabs separately
Currently the cell IOMMU code allocates the entire IOMMU page table in a
contiguous chunk. This is nice and tidy, but for machines with larger
amounts of RAM the page table allocation can fail due to it simply being
too large.

So split the segment table and page table setup routine, and arrange to
have the dynamic and fixed page tables allocated separately.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2008-03-03 08:03:15 +01:00
Michael Ellerman
edf441fb80 [POWERPC] Move allocation of cell IOMMU pad page
There's no need to allocate the pad page unless we're going to actually
use it - so move the allocation to where we know we're going to use it.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2008-03-03 08:03:15 +01:00
Michael Ellerman
08e024272e [POWERPC] Remove unused pte_offset variable
The cell IOMMU code no longer needs to save the pte_offset variable
separately, it is incorporated into tbl->it_offset.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2008-03-03 08:03:15 +01:00
Michael Ellerman
0d7386ebff [POWERPC] Use it_offset not pte_offset in cell IOMMU code
The cell IOMMU tce build and free routines use pte_offset to convert
the index passed from the generic IOMMU code into a page table offset.

This takes into account the SPIDER_DMA_OFFSET which sets the top bit
of every DMA address.

However it doesn't cater for the IOMMU window starting at a non-zero
address, as the base of the window is not incorporated into pte_offset
at all.

As it turns out tbl->it_offset already contains the value we need, it
takes into account the base of the window and also pte_offset. So use
it instead!

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2008-03-03 08:03:15 +01:00
Michael Ellerman
f9660e8a6c [POWERPC] Clearup cell IOMMU fixed mapping terminology
It's called the fixed mapping, not the static mapping.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2008-03-03 08:03:14 +01:00
Jens Osterkamp
f3c1ed9720 [POWERPC] enable hardware watchpoints on cell blades
Ulrich Weigand has found that the hardware watchpoints on cell were not
working back in November :

http://ozlabs.org/pipermail/linuxppc-dev/2007-November/046135.html

This patch sets them during initialization.

Signed-off-by: Jens Osterkamp <jens@de.ibm.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2008-03-03 08:03:14 +01:00
Jens Osterkamp
9176c0b1f5 [POWERPC] move celleb DABRX definitions
This moves the private DABRX definitions for celleb from beat.h to
reg.h to make them usable for all.

Signed-off-by: Jens Osterkamp <jens@de.ibm.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2008-03-03 08:03:14 +01:00
Bob Nelson
101fd46a75 [POWERPC] OProfile: enable callgraph support for Cell
This patch enables OProfile callgraph support for the Cell processor.  The
original code was just calling a function to add the PC value, now it will
call a function that first checks the callgraph depth.  Callgraph is already
enabled on the other Power platforms.

Signed-off-by: Bob Nelson <rrnelson@us.ibm.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2008-03-03 08:03:14 +01:00
Paul Mackerras
b9c64498f5 Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/jk/spufs into merge 2008-03-03 17:44:06 +11:00
Paul Mackerras
35d77ef1c0 Merge branch 'for-2.6.25' of master.kernel.org:/pub/scm/linux/kernel/git/jwboyer/powerpc-4xx into merge 2008-03-03 17:38:23 +11:00
Andre Detsch
2a58aa33da [POWERPC] spufs: fix use time accounting on SPE-overcommit
The spu_runcntl_RW register is restored within spu_restore function.
So, at the end of spu_bind_context, the SPU context is not just loaded,
but running.

This change corrects the state switch to account the time as USER.

Signed-off-by: Andre Detsch <adetsch@br.ibm.com>
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
2008-02-29 15:48:55 +11:00
Arnd Bergmann
c92a1acb67 [POWERPC] spufs: serialize SLB invalidation against SLB loading
There is a potential race between flushes of the entire SLB in the MFC
and the point where new entries are being established. The problem is
that we might put a ESID entry into the MFC SLB when the VSID entry has
just been cleared by the global flush.

This can be circumvented by holding the register_lock throughout both
the flushing and the creation of SLB entries.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
2008-02-29 15:19:52 +11:00
Arnd Bergmann
cc4b7c1814 [POWERPC] spufs: invalidate SLB translation before adding a new entry
When we replace an SLB entry in the MFC after using up all the available
entries, there is a short window in which an incorrect entry is marked
as valid.

The problem is that the 'valid' bit is stored in the ESID, which is
always written after the VSID. Overwriting the VSID first will make the
original ESID entry point to the new VSID, which means that any
concurrent DMA accessing the old ESID ends up being redirected to the
new virtual address.  A few cycles later, we write the new ESID and
everything is fine again.

That race can be closed by writing a zero entry to the ESID first, which
makes sure that the VSID is not accessed until we write the new ESID.

Note that we don't actually need to invalidate the SLB entry using the
invalidation register, which would also flush any ERAT entries for that
segment, because the segment translation does not become invalid but is
only removed from the SLB cache.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
2008-02-29 15:17:49 +11:00
Arnd Bergmann
fae9ca7915 [POWERPC] spufs: synchronize IRQ when disabling
There is a small race between the context save procedure
and the SPU interrupt handling, where we expect all interrupt
processing to have finished after disabling them, while
an interrupt is still being processed on another CPU.

The obvious fix is to call synchronize_irq() after disabling
the interrupts at the start of the context save procedure
to make sure we never access the SPU any more during an
ongoing save or even after that.

Thanks to Benjamin Herrenschmidt for pointing this out.

Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
2008-02-29 15:16:48 +11:00
Jeremy Kerr
71791bee90 [POWERPC] spufs: fix order of sputrace thread IDs
Currently, we get the following output from sputrace:

[5.097935954] 1606: spufs_ps_nopfn__enter (thread = 1605, spu = -1)
[5.097958164] 1606: spufs_ps_nopfn__insert (thread = 1605, spu = 15)
[5.097973529] 1607: spufs_ps_nopfn__enter (thread = 1605, spu = -1)
[5.097989174] 1607: spufs_ps_nopfn__insert (thread = 1605, spu = 14)

Which leads me to believe that 160[67] is the current thread ID, and
1605 is the context backing the psmap.

However, the 'current' and 'owner' tids are reversed - the 'current'
tid is on the right. This change puts the current thread ID in the
left-hand column instead, and renames the right to 'ctxthread'.

Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
2008-02-29 15:00:08 +11:00
Josh Boyer
fe57e8be9e [POWERPC] 4xx: Use correct board info structure in cuboot wrappers
Correct the remaining 44x cuboot wrappers to define TARGET_4xx as well.  This
creates the correct structure to use, including things like the second MAC
address.

Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
2008-02-28 08:16:27 -06:00
Jeremy Kerr
0111a70186 [POWERPC] spufs: fix invalid scheduling of forgotten contexts
At present, we have a situation where a context with no owner is
re-scheduled by spu_forget:

	Thread 1: reading regs file	Thread 2: context owner

					spu_forget()
						- ctx->owner = NULL
						- set SPU_SCHED_WAS_ACTIVE

	spu_acquire_saved()
	- context is in saved state

	spu_release_saved()
	- SPU_SCHED_WAS_ACTIVE is set,
	  so spu_activate() the context,
	  which now has no owner

In spu_forget(), we shouldn't be requesting a re-schedule by setting
SPU_SCHED_WAS_ACTIVE. This change removes the set_bit in spu_forget(),
so that spu_release_saved() doesn't reinsert this destroyed context on
to the run queue.

Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
2008-02-28 09:56:28 +11:00
Valentine Barshak
c91f91e5fb [POWERPC] 44x: add missing define TARGET_4xx and TARGET_440GX to cuboot-taishan
In order to get the proper boad info (bd_info) structure defined in ppcboot.h
both TARGET_4xx and TARGET_44x should be defined for all PowerPC 440 boards.
The 440GX boards also need TARGET_440GX defined since they have 4 EMACs and
there are 4 MAC addesses in bd_info passed by u-boot.

Signed-off-by: Valentine Barshak <vbarshak@ru.mvista.com>
Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
2008-02-27 09:47:49 -06:00
Stefan Roese
3db3ba0347 [POWERPC] 4xx: Fix L1 cache size in katmai DTS
This patch changes the katmai (440SPe) L1 cache size to 32k. Some
whitespace issues are cleaned up too.

Signed-off-by: Stefan Roese <sr@denx.de>
Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
2008-02-27 09:47:11 -06:00
Stefan Roese
e33eb074cb [POWERPC] 4xx: Fix Haleakala PCIe compatibility problem in dts
Since the 4xx PCIe driver checks for 405ex compatibility, the
PCIe interface was not detected as it is currently defined as
"405exr" compatible. This patch changes it to "405ex".

The 405EX and 405EXr are identical exept that the 2nd PCIe and the
2nd EMAC interfaces are missing.

Signed-off-by: Stefan Roese <sr@denx.de>
Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
2008-02-27 09:43:15 -06:00
Jeremy Kerr
d58831375d [POWERPC] spufs: fix context destruction during psmap fault
We have a small window where a spu context may be destroyed while
we're servicing a page fault (from another thread) to the context's
problem state mapping.

After we up_read() the mmap_sem, it's possible that the context is
destroyed by its owning thread, and so the later references to ctx
are invalid. This can maifest as a deadlock on the (now free()-ed)
context state mutex.

This change adds a reference to the context before we release the
mmap_sem, so that the context cannot be destroyed.

Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
2008-02-27 18:47:53 +11:00
Eric Dujardin
4187377b24 [POWERPC] Add export for mpc52xx_set_psc_clkdiv
mpc52xx_set_psc_clkdiv is needed by PSC device drivers.

Signed-off-by: Eric Dujardin <eric.dujardin@sagem.com>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2008-02-23 22:51:28 -07:00
Linus Torvalds
0f151e8b21 Merge branch 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc
* 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc:
  [POWERPC] pasemi: Remove warning in mpic_pasemi_msi.c
  [POWERPC] pasemi: Register i2c devices at boot
  [POWERPC] cell: fix spurious false return from spu_trap_data_{map,seg}
  [POWERPC] Fix warning in pseries/power.c
  [POWERPC] Fix bootwrapper builds with older gcc versions
  [POWERPC] Fix dt_mem_next_cell() to read the full address
  [POWERPC] Kill sparse warnings in kprobes
  [POWERPC] spufs: fix scheduler starvation by idle contexts
  [POWERPC] 44x: Add multiplatform defconfig
  [POWERPC] 44x: Fix Kconfig formatting
  [POWERPC] 4xx: Update defconfigs for 2.6.25
  [POWERPC] 4xx: Remove "i2c" and "xxmii-interface" device_types from dts
  [POWERPC] PPC440EP Interrupt Triggering and Level Settings
  [POWERPC] net: NEWEMAC: Remove "rgmii-interface" from rgmii matching table
2008-02-21 16:18:05 -08:00
Paul Mackerras
a8b87f609d Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/jk/spufs into merge 2008-02-21 21:49:13 +11:00
Olof Johansson
9c03385228 [POWERPC] pasemi: Remove warning in mpic_pasemi_msi.c
Remove warning:

arch/powerpc/sysdev/mpic_pasemi_msi.c: In function 'pasemi_msi_setup_msi_irqs':
arch/powerpc/sysdev/mpic_pasemi_msi.c:135: warning: 'addr' is used uninitialized in this function

Turns out addr wasn't even used, it's a leftover from the u3msi code.

Signed-off-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-02-21 21:08:35 +11:00
Olof Johansson
be2553ffb5 [POWERPC] pasemi: Register i2c devices at boot
Setup i2c_board_info based on device tree contents.  This has to be
a device_initcall since we need PCI to be probed by the time we
run it, but before the actual driver is initialized.

Signed-off-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-02-21 21:08:35 +11:00
Andre Detsch
61b36fc1f7 [POWERPC] cell: fix spurious false return from spu_trap_data_{map,seg}
At present, the __spufs_trap_data_map and __spu_trap_data_seq functions
exit if spu->flags has the SPU_CONTEXT_SWITCH_ACTIVE set. This was
resulting in suprious returns from these functions, as they may be
legitimately called when we have this bit set.

We only use it in these two sanity checks, so this change removes the
flag completely. This fixes hangs in the page-fault path of SPE apps.

Signed-off-by: Andre Detsch <adetsch@br.ibm.com>
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
2008-02-20 14:57:36 +11:00
Stephen Rothwell
3d5d27c40f [POWERPC] Fix warning in pseries/power.c
Introduced by commit 79393fc46e
("kobject: convert pseries/power.c to kobj_attr interface").

sys_create_file takes a "struct attrbute *" not a "struct
kobj_addribute *".

arch/powerpc/platforms/pseries/power.c: In function 'apo_pm_init':
arch/powerpc/platforms/pseries/power.c:78: warning: passing argument 2 of 'sysfs_create_file' from incompatible pointer type

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-02-20 13:33:37 +11:00
Josh Boyer
bf2e70ac65 [POWERPC] Fix bootwrapper builds with older gcc versions
GCC versions before 3.4 did not support the -mcpu=440 option.  Use
-mcpu=405 for the 4xx specific bootwrapper files, as that has been
around for much longer.

Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-02-20 13:33:37 +11:00
Becky Bruce
abe768858a [POWERPC] Fix dt_mem_next_cell() to read the full address
dt_mem_next_cell() currently does of_read_ulong().  This does not
allow for the case where #size-cells and/or #address-cells = 2 on a
32-bit system, as it will end up reading 32 bits instead of the
expected 64.  Change it to use of_read_number instead and always
return a u64.

Signed-off-by: Becky Bruce <becky.bruce at freescale.com>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-02-20 13:33:37 +11:00
Ananth N Mavinakayanahalli
66200ea222 [POWERPC] Kill sparse warnings in kprobes
Fix sparse warnings in powerpc kprobes:

  CHECK   arch/powerpc/kernel/kprobes.c
arch/powerpc/kernel/kprobes.c:277:6: warning: symbol 'kretprobe_trampoline_holder' was not declared. Should it be static?
arch/powerpc/kernel/kprobes.c:287:15: warning: symbol 'trampoline_probe_handler' was not declared. Should it be static?
arch/powerpc/kernel/kprobes.c:525:16: warning: symbol 'jprobe_return_end' was not declared. Should it be static?

Fix along the same lines as http://lkml.org/lkml/2008/2/13/642

Signed-off-by: Ananth N Mavinakayanahalli <ananth@in.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-02-20 13:33:37 +11:00
Sam Ravnborg
3f85d63ea4 x86: fix vdso_install breaks user "make install"
I suggest to make the vdso_install step independent as
in following patch.

This solves the issue at ahnd and still gives us the posibility
to install the files should they be needed.

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-02-19 16:18:34 +01:00
Jeremy Kerr
4ef110141b [POWERPC] spufs: fix scheduler starvation by idle contexts
2.6.25 has a regression where we can starve the scheduler by creating
(N_SPES+1) contexts, then running them one at a time.

The final context will never be run, as the other contexts are loaded on
the SPEs, none of which are repoted as free (ie, spu->alloc_state !=
SPU_FREE), so spu_get_idle() doesn't give us a spu to run on. Because
all of the contexts are stopped, none are descheduled by the scheduler
tick, as spusched_tick returns if spu_stopped(ctx).

This change replaces the spu_stopped() check with checking for SCHED_IDLE
in ctx->policy. We set a context's policy to SCHED_IDLE when we're not
in spu_run(). We also favour SCHED_IDLE contexts when looking for contexts
to unbind, but leave their timeslice intact for later resumption.

This patch fixes the following test in the spufs-testsuite:
  tests/20-scheduler/02-yield-starvation

Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
2008-02-19 10:12:02 +11:00
Josh Boyer
13dbf42210 [POWERPC] 44x: Add multiplatform defconfig
Add a multiboard defconfig for PowerPC 44x now that the wrapper can create
the proper zImages for multiple boards.

Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
2008-02-16 08:01:10 -06:00
Josh Boyer
4b63c3b9a6 [POWERPC] 44x: Fix Kconfig formatting
Clean up some whitespace issues in the 44x Kconfig file.

Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
2008-02-15 22:05:03 -06:00
Josh Boyer
8eb70ea2db [POWERPC] 4xx: Update defconfigs for 2.6.25
Update the 4xx defconfigs to remove WANT_DEVICE_TREE and add MTD_OF_PARTS
where appropriate.

Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
2008-02-15 22:00:19 -06:00
Stefan Roese
e563db977f [POWERPC] 4xx: Remove "i2c" and "xxmii-interface" device_types from dts
Remove all "i2c" and "xxmii-interface" (rgmii etc) device_type entries
from the 4xx dts files.

Signed-off-by: Stefan Roese <sr@denx.de>
Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
2008-02-15 21:35:30 -06:00
Linus Torvalds
b9e222904c Merge branch 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc
* 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc:
  [POWERPC] Remove unused CONFIG_WANT_DEVICE_TREE
  [POWERPC] Cell RAS: Remove DEBUG, and add license and copyright
  [POWERPC] hvc_rtas_init() must be __init
  [POWERPC] free_property() must not be __init
  [POWERPC] vdso_do_func_patch{32,64}() must be __init
  [POWERPC] Remove generated files on make clean
  [POWERPC] Fix arch/ppc compilation - add typedef for pgtable_t
  [POWERPC] Wire up new timerfd syscalls
  [POWERPC] PS3: Update sys-manager button events
  [POWERPC] PS3: Sys-manager code cleanup
  [POWERPC] PS3: Use system reboot on restart
  [POWERPC] PS3: Fix bootwrapper hang bug
  [POWERPC] PS3: Fix reading pm interval in logical performance monitor
  [POWERPC] PS3: Fix setting bookmark in logical performance monitor
  [POWERPC] Fix DEBUG_PREEMPT warning when warning
2008-02-14 21:22:33 -08:00
Jan Blunck
448678a0f3 d_path: Make get_dcookie() use a struct path argument
get_dcookie() is always called with a dentry and a vfsmount from a struct
path.  Make get_dcookie() take it directly as an argument.

[akpm@linux-foundation.org: coding-style fixes]
Signed-off-by: Jan Blunck <jblunck@suse.de>
Acked-by: Christoph Hellwig <hch@infradead.org>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: "J. Bruce Fields" <bfields@fieldses.org>
Cc: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-02-14 21:17:08 -08:00
Jan Blunck
1d957f9bf8 Introduce path_put()
* Add path_put() functions for releasing a reference to the dentry and
  vfsmount of a struct path in the right order

* Switch from path_release(nd) to path_put(&nd->path)

* Rename dput_path() to path_put_conditional()

[akpm@linux-foundation.org: fix cifs]
Signed-off-by: Jan Blunck <jblunck@suse.de>
Signed-off-by: Andreas Gruenbacher <agruen@suse.de>
Acked-by: Christoph Hellwig <hch@lst.de>
Cc: <linux-fsdevel@vger.kernel.org>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Steven French <sfrench@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-02-14 21:13:33 -08:00
Jan Blunck
4ac9137858 Embed a struct path into struct nameidata instead of nd->{dentry,mnt}
This is the central patch of a cleanup series. In most cases there is no good
reason why someone would want to use a dentry for itself. This series reflects
that fact and embeds a struct path into nameidata.

Together with the other patches of this series
- it enforced the correct order of getting/releasing the reference count on
  <dentry,vfsmount> pairs
- it prepares the VFS for stacking support since it is essential to have a
  struct path in every place where the stack can be traversed
- it reduces the overall code size:

without patch series:
   text    data     bss     dec     hex filename
5321639  858418  715768 6895825  6938d1 vmlinux

with patch series:
   text    data     bss     dec     hex filename
5320026  858418  715768 6894212  693284 vmlinux

This patch:

Switch from nd->{dentry,mnt} to nd->path.{dentry,mnt} everywhere.

[akpm@linux-foundation.org: coding-style fixes]
[akpm@linux-foundation.org: fix cifs]
[akpm@linux-foundation.org: fix smack]
Signed-off-by: Jan Blunck <jblunck@suse.de>
Signed-off-by: Andreas Gruenbacher <agruen@suse.de>
Acked-by: Christoph Hellwig <hch@lst.de>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Casey Schaufler <casey@schaufler-ca.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-02-14 21:13:33 -08:00
Grant Likely
d4eac7501f [POWERPC] Remove unused CONFIG_WANT_DEVICE_TREE
CONFIG_DEVICE_TREE was the only user of CONFIG_WANT_DEVICE_TREE but
it was removed in commit id 2543133381
(bootwrapper: Build multiple cuImages).

This removes CONFIG_WANT_DEVICE_TREE from Kconfig and the defconfigs.

Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-02-14 22:11:03 +11:00
Michael Ellerman
bdb226bac1 [POWERPC] Cell RAS: Remove DEBUG, and add license and copyright
arch/powerpc/platforms/cell/ras.c still has DEBUG #defined, which is no
longer necessary.  Disable it - this disables two pr_debugs().

While we're there this file should have a copyright notice and license,
so add both.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-02-14 22:11:02 +11:00
Adrian Bunk
16e543ffa8 [POWERPC] free_property() must not be __init
This fixes the following section mismatch:

<--  snip  -->

...
WARNING: vmlinux.o(.text+0x55648): Section mismatch in reference from the function .free_node() to the function .init.text:.free_property()
...

<--  snip  -->

Signed-off-by: Adrian Bunk <bunk@kernel.org>
Acked-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-02-14 22:11:02 +11:00
Adrian Bunk
cf8918fe55 [POWERPC] vdso_do_func_patch{32,64}() must be __init
This fixes the following section mismatches:

<--  snip  -->

...
WARNING: vmlinux.o(.text+0xe49c): Section mismatch in reference from the function .vdso_do_func_patch64() to the function .init.text:.find_symbol64()
WARNING: vmlinux.o(.text+0xe4d0): Section mismatch in reference from the function .vdso_do_func_patch64() to the function .init.text:.find_symbol64()
WARNING: vmlinux.o(.text+0xe56c): Section mismatch in reference from the function .vdso_do_func_patch32() to the function .init.text:.find_symbol32()
WARNING: vmlinux.o(.text+0xe5a0): Section mismatch in reference from the function .vdso_do_func_patch32() to the function .init.text:.find_symbol32()
...

<--  snip  -->

Signed-off-by: Adrian Bunk <bunk@kernel.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-02-14 22:11:02 +11:00
Kumar Gala
e4ccde0262 [POWERPC] Remove generated files on make clean
vmlinux.lds and dtc-parser.tab.h get created but never cleaned up.

Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-02-14 22:11:02 +11:00