Commit Graph

2354 Commits

Author SHA1 Message Date
Stephen Rothwell
145d01e428 [PATCH] ppc64 iSeries: allow build with no PCI
This patch allows iSeries to build with CONFIG_PCI=n.  This is useful for
partitions that have only virtual I/O.

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-06-21 18:46:31 -07:00
Stephen Rothwell
7f74e79fe7 [PATCH] ppc64 iSeries: tidy up irq code after merge
This patch just removes some dead code, fixes messages that referred to the
file this code used to be in and inserts XmPciLpEvent_init into its caller.

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-06-21 18:46:30 -07:00
Stephen Rothwell
89ef68f0be [PATCH] ppc64 iSeries: remove XmPciLpEvent.c
This patch just merges XmPciLpEvent.c into iSeries_irq.c (the only caller of
its only external function).  XmPciLpEvent.c just contained the lowlevel
iSeries irq code.

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-06-21 18:46:30 -07:00
Stephen Rothwell
0c3b4f1a8e [PATCH] ppc64 iSeries: irq simple cleanups
This patch is just simple cleanups to the iSeries irq code.
	- whitespace and comments
	- rearrange some functions to avoid forward declarations
	- remove XmPciLpEvent.h as its functions were declared elsewhere
	- remove decaration of function that no longer exists
No semantic changes.

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-06-21 18:46:30 -07:00
Stephen Rothwell
061c063efc [PATCH] ppc64 iSeries: remove some more members of iSeries_Device_Node
The AgentId, PhbId, FrameId, CardLocation and Location members of
iSeries_Device_Node are stored early in the boot process just so that a
message about the device can be printed later in the boot process.  Remove
them and construct the message by doing the VPD parsing at the time the
message is printed.

Also remove a few unused defines in iSeries_VpdInfo.c.

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-06-21 18:46:30 -07:00
Stephen Rothwell
a2ebaf250f [PATCH] ppc64 iSeries: remove IoRetry from iSeries_Device_Node
The IoRetry member of iSeries_Devide_Node is really only used locally, so
remove it and replace it with a local variable.

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-06-21 18:46:29 -07:00
Stephen Rothwell
aab41dea80 [PATCH] ppc64 iSeries: iSeries_pci.h cleanups
Remove no longer used things from iSeries_pci.h.

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-06-21 18:46:29 -07:00
Stephen Rothwell
57ca86d4f0 [PATCH] ppc64 iSeries: iSeries_VpdInfo.c cleanups
Clean up iSeries_VpdInfo.c:
	- white space and comment fixes
	- make a function static
	- the functions here are only called from iSeries_pci.c, so
	  CONFIG_PCI will be set (so remove check)
	- only build when CONFIG_PCI is set
	- remove unneeded includes and cast

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-06-21 18:46:29 -07:00
Stephen Rothwell
e7eb22d201 [PATCH] ppc64 iSeries: iommu.h cleanups
The iommu_table_cb structure is iSeries specific, so move it to the header
file that declares the function we pass it to.  vio_tce_table and
iommu_setup_iSeries no longer exist, so remove their declarations.

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-06-21 18:46:29 -07:00
Stephen Rothwell
ea7190d0af [PATCH] ppc64 iSeries: remove iSeries_pci_reset.c
The file arch/ppc64/kernel/iSeries_pci_reset contains only one function that
is not use anywhere (any more).  Remove it.  This function is the only user of
the ReturnCode member of iSeries_Device_Node, so remove that as well.

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-06-21 18:46:29 -07:00
Stephen Rothwell
c670b1acd0 [PATCH] ppc64 iSeries: misc header cleanups
Last of this round of the iSeries header cleanups
	- don't have two defines for the same thing (HvMaxArchitectedLps
	  and HvMaxArchitectedVirtualLans)
	- HvCallSc.h only needs linux/types.h
	- remove unused struct definition
	- add "extern" to some more function declarations

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-06-21 18:46:28 -07:00
Stephen Rothwell
4a5304f5ba [PATCH] ppc64 iSeries: tidy up some includes and HvCall.h
This patch removes some unused bits from HvCall.h and some unneeded #includes
from other files.  Also includes ItLpQueue.h in paca.h in preference to a stub
declaration of struct ItLpQueue.

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-06-21 18:46:28 -07:00
Stephen Rothwell
c92877e0a0 [PATCH] ppc64 iSeries: cleanup ItLpQueue.h
Just white space cleaups and move process_iSeries_events into its only caller.

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-06-21 18:46:28 -07:00
Stephen Rothwell
2310c977a9 [PATCH] ppc64 iSeries: remove HvCallCfg.h
Now that the only users of things in HvCallCfg.h are in HvLpConfig.h, merge in
the bit we need and remove HvCallCfg.h.

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-06-21 18:46:28 -07:00
Stephen Rothwell
dd61ce9227 [PATCH] ppc64 iSeries: eliminate some unused inline functions
This patch removes from the iSeries header files a large number of inline
functions that are not used.  It also changes the only caller of a HvCallCfg
function that is outside HvLpConfig.h to its equivalent HvLpConfig function
and no longer includes HvCallCfg.h where it is not needed.

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-06-21 18:46:28 -07:00
Stephen Rothwell
0bc0ffd5f0 [PATCH] ppc64 iSeries: remove LparData.h
include/asm-ppc64/iSeries/LparData.h just included a whole lot of other files
to declare variables that would be better declared in those other files.  So,
remove it.  This will reduce that number of things needed to be included in
most cases to access the relevant variables.

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-06-21 18:46:27 -07:00
Stephen Rothwell
6b7feecb2f [PATCH] ppc64 iSeries: obvious code simplifications
This patch does some obvious code cleanups in the iSeries headers files.
	- simplifies the bodies of lots of inline functions
	- parenthesises a macros result
	- removes C++ wrapping
	- adds "extern" to some function declarations
There are no semantic changes.

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-06-21 18:46:27 -07:00
Stephen Rothwell
fcee389526 [PATCH] ppc64 iSeries: more header file white space cleanups
This patch just contains white space and comment cleanups in the iSeries
headers files.  There are no semantic changes.

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-06-21 18:46:27 -07:00
Stephen Rothwell
45dc76aaf6 [PATCH] ppc64 iSeries: header file white space cleanups
This patch just contains white space and comment cleanups in the iSeries
headers files.  There are no semantic changes.

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-06-21 18:46:27 -07:00
Stephen Rothwell
0e3e4a1c4d [PATCH] ppc64 iSeries: remove iSeries_proc.h
include/asm-ppc64/iSeries/iSeries_proc.h just contains a declaration of a
function that no longer exists.  Remove it.

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-06-21 18:46:26 -07:00
Sven Luther
723e2b35e4 [PATCH] ppc64: override command line AS/LD/CC variables when adding -m64 and co for biarch compilers
The following kind of calls currently fails :

  make ARCH=ppc64 CC="gcc-3.4"

Since the code for detecting a biarch compiler and adding the needed 64bit
magic argument fails if the AS/LD/CC commands are overriden in the command
line.

The attached patch fixes this by using the make override and += directive,
but i am not 100% sure this will work without gmake, as i am no Makefile
expert.

Cc: Paul Mackerras <paulus@samba.org>
Cc: Anton Blanchard <anton@samba.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-06-21 18:46:26 -07:00
David Gibson
20cee16ced [PATCH] ppc64: Abolish ioremap_mm
Currently ppc64 has two mm_structs for the kernel, init_mm and also
ioremap_mm.  The latter really isn't necessary: this patch abolishes it,
instead restricting vmallocs to the lower 1TB of the init_mm's range and
placing io mappings in the upper 1TB.  This simplifies the code in a number
of places and eliminates an unecessary set of pagetables.  It also tweaks
the unmap/free path a little, allowing us to remove the unmap_im_area() set
of page table walkers, replacing them with unmap_vm_area().

Signed-off-by: David Gibson <dwg@au1.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-06-21 18:46:26 -07:00
Benjamin Herrenschmidt
6879dc137e [PATCH] ppc32: Kill embedded system.map, use kallsyms
This patch kills the whole embedded System.map mecanism and the
bootloader-passed System.map that was used to provide symbol resolution in
xmon.  Instead, xmon now uses kallsyms like ppc64 does.

No hurry getting that in Linus tree, let it be tested in -mm for a while
first and make sure it doesn't break various embedded configs.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-06-21 18:46:26 -07:00
Jakub Bogusz
a70d439345 [PATCH] ppc32: don't recursively crash in die() on CHRP/PReP machines
This patch avoids recursive crash (leading to kernel stack overflow) in
die() on CHRP/PReP machines when CONFIG_PMAC_BACKLIGHT=y.  set_backlight_*
functions are placed in pmac section, which is discarded when _machine !=
_MACH_Pmac.

Signed-off-by: Jakub Bogusz <qboosh@pld-linux.org>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-06-21 18:46:25 -07:00
Kumar Gala
ba8c6d534a [PATCH] ppc32: remove some unnecessary includes of prom.h
Fight the Good Fight: Limit prom.h header creep.

Signed-off-by: Jon Loeliger <jdl@freescale.com>
Signed-off-by: Kumar Gala <kumar.gala@freescale.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-06-21 18:46:25 -07:00
Kumar Gala
1492ec8069 [PATCH] ppc32: Factor out common exception code into macro's for 4xx/Book-E
4xx and Book-E PPC's have several exception levels.  The code to handle
each level is fairly regular.  Turning the code into macro's will ease the
handling of future exception levels (debug) in forth coming chips.

Signed-off-by: Kumar Gala <kumar.gala@freescale.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-06-21 18:46:25 -07:00
Kumar Gala
5be061eee9 [PATCH] ppc32: Clean up NUM_TLBCAMS usage for Freescale Book-E PPC's
Made the number of TLB CAM entries private and converted the board
consumers to use num_tlbcam_entries which is setup at boot time from
configuration registers.  This way the only consumers of the #define
NUM_TLBCAMS are the arrays used to manage the TLB.

Signed-off-by: Kumar Gala <kumar.gala@freescale.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-06-21 18:46:24 -07:00
Kumar Gala
65145e060b [PATCH] ppc32: Added support for all MPC8548 internal interrupts
The MPC8548 has 48 internal interrupts and 12 external interrupts.  The
previous generation PowerQUICC III devices only had 32 internal and 12
external interrupts on the primary interrupt controller.

Expanded the number of internal interrupts to 48 for all PowerQUICC III
processors and moved the interrupt numbers for the external after the 48
internal interrupt lines, rather than putting the 12 new internal
interrupts at the end and ifdef'ng the whole mess.  As parted of this
created a macro which represents the internal interrupt senses since they
are the same on all PQ3 processors.

Signed-off-by: Kumar Gala <kumar.gala@freescale.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-06-21 18:46:24 -07:00
Matt Porter
eee4146ab9 [PATCH] ppc32: remove orphaned ppc4xx_kgdb.c
Removes ppc4xx_kgdb.c which is no longer being used.  Pointed out by Andrei
Konovalov.

Signed-off-by: Matt Porter <mporter@kernel.crashing.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-06-21 18:46:24 -07:00
Kumar Gala
682afbbd14 [PATCH] ppc32: Add support for MPC8245 8250 serial ports on Sandpoint
Added platform device initialization for the two 8250 style UARTs that
exist on the MPC8245.  Additionally, updated the Sandpoint code to enable
one of these UARTs if an MPC8245 is connected to it.

Signed-off-by: Matt McClintock <msm@freescale.com>
Signed-off-by: Kumar Gala <kumar.gala@freescale.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-06-21 18:46:24 -07:00
Matt Porter
1e5aa8c865 [PATCH] ppc32: fix CONFIG_TASK_SIZE handling on 40x
This patch is virtually identical to my previous 44x one.  It removes
0x8000'0000 TASK_SIZE hardcoded assumption from head_4xx.S.

Signed-off-by: Eugene Surovegin <ebs@ebshome.net>
Signed-off-by: Matt Porter <mporter@kernel.crashing.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-06-21 18:46:24 -07:00
Matt Porter
a1604f9121 [PATCH] cpm_uart: Route SCC2 pins for the STx GP3 board
Adds SCC2 pin routing specific to the GP3 board.

Signed-off-by: Matt Porter <mporter@kernel.crashing.org>
Signed-off-by: Kumar Gala <kumar.gala@freescale.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-06-21 18:46:23 -07:00
Kumar Gala
b264c35279 [PATCH] ppc32: Converted MPC10X bridge to use platform devices instead of OCP
Converted the MPC10x bridge support (used by MPC10x and 8240/1/5) to used
the standard platform device model.

Signed-off-by: Matt McClintock <msm@freescale.com>
Signed-off-by: Kumar Gala <kumar.gala@freescale.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-06-21 18:46:23 -07:00
Kumar Gala
c93fcff695 [PATCH] ppc32: Removed dependency on CONFIG_CPM2 for building mpc85xx_device.c
Previously we needed CONFIG_CPM2 enabled to get the proper IRQ ifdef's for
CPM interrupts.  Recent changes have caused that to be no longer necessary.

Signed-off-by: Kumar Gala <kumar.gala@freescale.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-06-21 18:46:23 -07:00
Kumar Gala
c91999bba3 [PATCH] ppc32: Added preliminary support for the MPC8548 CDS board
Adds support for using the MPC8548 processor on the CDS reference board.
Currently all the major busses (PCI, PCI-X, PCI-Express, sRIO) and eTSEC3
and eTSEC4 are not supported.

Signed-off-by: Kumar Gala <kumar.gala@freescale.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-06-21 18:46:23 -07:00
Kumar Gala
5b37b700f7 [PATCH] ppc32: Added support for new MPC8548 family of PowerQUICC III processors
Added descriptions of the new MPC8548 family processors, e500 core and
peripherals.

Signed-off-by: Kumar Gala <kumar.gala@freescale.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-06-21 18:46:23 -07:00
Gerald Schaefer
da3caa204c [PATCH] SELinux: memory leak in selinux_sb_copy_data()
There is a memory leak during mount when SELinux is active and mount
options are specified.

Signed-off-by: Gerald Schaefer <geraldsc@de.ibm.com>
Acked-by:  Stephen Smalley <sds@epoch.ncsc.mil>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-06-21 18:46:22 -07:00
Gerald Schaefer
8680e22f29 [PATCH] VFS: memory leak in do_kern_mount()
There is a memory leak during mount when CONFIG_SECURITY is enabled and
mount options are specified.

Signed-off-by: Gerald Schaefer <geraldsc@de.ibm.com>
Acked-by: James Morris <jmorris@redhat.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-06-21 18:46:22 -07:00
Coywolf Qi Hunt
2894801db1 [PATCH] kbuild: display compile version
I am always trying to make sure I've booted the right kernel after a new
install.  Too paranoid maybe.  But I guess there're other people like me.
So let's make kbuild display the compile version number at the end to give
us a hint.  I know we may be booting vmlinux someday, but don't care about
it for now.

Signed-off-by: Coywolf Qi Hunt <coywolf@lovecn.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-06-21 18:46:22 -07:00
John W. Linville
0f667ff5c0 [PATCH] 3c59x: remove superfluous vortex_debug test from boomerang_start_xmit()
Remove the superfluous test of "if (vortex_debug > 3)" inside the "if
(vortex_debug > 6)" clause early in boomerang_start_xmit.

Signed-off-by: John W. Linville <linville@tuxdriver.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-06-21 18:46:22 -07:00
Denis Vlasenko
c0d62219a4 [PATCH] Kill stray newline
OOM killer prints a stray newline.

Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-06-21 18:46:21 -07:00
Abhijit Karmarkar
b4955ce3dd [PATCH] msync: check pte dirty earlier
It's common practice to msync a large address range regularly, in which
often only a few ptes have actually been dirtied since the previous pass.

sync_pte_range then goes much faster if it tests whether pte is dirty
before locating and accessing each struct page cacheline; and it is hardly
slowed by ptep_clear_flush_dirty repeating that test in the opposite case,
when every pte actually is dirty.

But beware, s390's pte_dirty always says false, since its dirty bit is kept
in the storage key, located via the struct page address.  So skip this
optimization in its case: use a pte_maybe_dirty macro which just says true
if page_test_and_clear_dirty is implemented.

Signed-off-by: Abhijit Karmarkar <abhijitk@veritas.com>
Signed-off-by: Hugh Dickins <hugh@veritas.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-06-21 18:46:21 -07:00
Hugh Dickins
c475a8ab62 [PATCH] can_share_swap_page: use page_mapcount
Remember that ironic get_user_pages race?  when the raised page_count on a
page swapped out led do_wp_page to decide that it had to copy on write, so
substituted a different page into userspace.  2.6.7 onwards have Andrea's
solution, where try_to_unmap_one backs out if it finds page_count raised.

Which works, but is unsatisfying (rmap.c has no other page_count heuristics),
and was found a few months ago to hang an intensive page migration test.  A
year ago I was hesitant to engage page_mapcount, now it seems the right fix.

So remove the page_count hack from try_to_unmap_one; and use activate_page in
unuse_mm when dropping lock, to replace its secondary effect of helping
swapoff to make progress in that case.

Simplify can_share_swap_page (now called only on anonymous pages) to check
page_mapcount + page_swapcount == 1: still needs the page lock to stabilize
their (pessimistic) sum, but does not need swapper_space.tree_lock for that.

In do_swap_page, move swap_free and unlock_page below page_add_anon_rmap, to
keep sum on the high side, and correct when can_share_swap_page called.

Signed-off-by: Hugh Dickins <hugh@veritas.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-06-21 18:46:21 -07:00
Hugh Dickins
d296e9cd02 [PATCH] do_wp_page: cannot share file page
A small optimization to do_wp_page's check for whether to avoid copy by
reusing the page already mapped.  It can never share a cached file page,
nor can it share a reserved page (often the empty zero page), so it's a
waste of time to lock and unlock in those cases.  Which nowadays can both
be neatly excluded by a preliminary PageAnon test.

Christoph has reported that a preliminary page_count test proved valuable
for scalability here, but PageAnon covers more common cases all at once.

Signed-off-by: Hugh Dickins <hugh@veritas.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-06-21 18:46:21 -07:00
Hugh Dickins
08ef472937 [PATCH] get_user_pages: kill get_page_map
Since its birth, get_user_pages has been calling a misguided get_page_map
function.  follow_page has already returned NULL if the pfn is invalid, we
cannot reach an invalid pfn from a validated struct page.

Remove get_page_map, and the messy rewind in get_user_pages to cope with
its failure.  Oh, and could we please call that "struct page *page" like
everywhere else, instead of "struct page *map"?

Signed-off-by: Hugh Dickins <hugh@veritas.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-06-21 18:46:21 -07:00
Hugh Dickins
7c2f3fda56 [PATCH] rme96xx: fix PageReserved range
rme96xx busmaster_malloc miscalculates and fails to set PageReserved on any
page of char *buf; but busmaster_free does it right, so do the same (I
don't have the card, just noticed this while sifting for rmap BUGs).

Signed-off-by: Hugh Dickins <hugh@veritas.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-06-21 18:46:20 -07:00
Hugh Dickins
334795eca4 [PATCH] bad_page: clear reclaim and slab
Since free_pages_check complains if PG_reclaim or PG_slab is set, bad_page
ought to clear them to avoid repetitive reports (Nikita noticed this too).
Let prep_new_page check page_count and PG_slab as free_pages_check does.

Signed-off-by: Hugh Dickins <hugh@veritas.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-06-21 18:46:19 -07:00
Hugh Dickins
45918e1a8b [PATCH] dup_mmap: update comment on new vma
Remove part of comment on linking new vma in dup_mmap: since anon_vma rmap
came in, try_to_unmap_one knows the vma without needing find_vma.  But add
a comment to note that here vma is inserted without mmap_sem.

Signed-off-by: Hugh Dickins <hugh@veritas.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-06-21 18:46:19 -07:00
Hugh Dickins
91612e0df2 [PATCH] mbind: check_range use standard ptwalk
Strict mbind's check for currently mapped pages being on node has been
using a slow loop which re-evaluates pgd, pud, pmd, pte for each entry:
replace that by a standard four-level page table walk like others in mm.
Since mmap_sem is held for writing, page_table_lock can be taken at the
inner level to limit latency.

Signed-off-by: Hugh Dickins <hugh@veritas.com>
Cc: Andi Kleen <ak@muc.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-06-21 18:46:19 -07:00
Hugh Dickins
941150a326 [PATCH] mbind: fix verify_pages pte_page
Strict mbind's check that pages already mapped are on right node has been
using pte_page without checking if pfn_valid, and without page_table_lock
to prevent spurious failures when try_to_unmap_one intervenes between the
pte_present and the pte_page.

Signed-off-by: Hugh Dickins <hugh@veritas.com>
Cc: Andi Kleen <ak@muc.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-06-21 18:46:19 -07:00