Commit Graph

7027 Commits

Author SHA1 Message Date
Arthur Othieno
7c31625aa8 [PATCH] ppc32: Add cputable entry for 750CXe DD2.4 ("Gekko")
Add a table entry for 750CXe DD2.4 ("Gekko") as found in the GameCube from
Nintendo:

  http://www-306.ibm.com/chips/techlib/techlib.nsf/techdocs/291C8D0EF3EAEC1687256B72005C745C#C1

Signed-off-by: Arthur Othieno <a.othieno@bluewin.ch>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-05 00:05:59 -07:00
Arthur Othieno
ac1ff0477c [PATCH] ppc32: Re-order cputable for 750CXe DD2.4 entry
"745/755" (pvr_value:0x00083000) is a catch-all entry.
Since arch/ppc/kernel/misc.S:identify_cpu() returns on first match,
move this lower in the table so 750CXe DD2.4 (pvr_value:0x00083214)
may be correctly enumerated.

Signed-off-by: Arthur Othieno <a.othieno@bluewin.ch>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-05 00:05:59 -07:00
Kumar Gala
66d2cc95d1 [PATCH] ppc32: Added PCI support MPC83xx
Adds support for the two PCI busses on MPC83xx and the MPC834x SYS/PIBS
reference board.

The code initializes PCI inbound/outbound windows, allocates and registers
PCI memory/io space.  Be aware that setup of the PCI buses on the PIBs
board is expected to be done by the firmware.

Signed-off-by: Tony Li <tony.li@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>
2005-09-05 00:05:59 -07:00
Lee Nicks
cc9c540b6c [PATCH] ppc32: defconfig for Marvell EV64360BP board
Here is the default configuration for Marvell EV64360BP board.  It has been
tested on the board.

Signed-off-by: Lee Nicks <allinux@gmail.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-05 00:05:59 -07:00
Lee Nicks
3acb23440f [PATCH] ppc32: add support for Marvell EV64360BP board
This patch adds support for Marvell EV64360BP board.  So far, it supports
mpsc serial console, gigabit ethernet, jffs2 root filesystem, etc.  Other
device support, like watchdog, RTC, will be added later.

Signed-off-by: Lee Nicks <allinux@gmail.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-05 00:05:59 -07:00
Kumar Gala
164ada643d [PATCH] ppc32: add CONFIG_HZ
While ppc32 has the CONFIG_HZ Kconfig option, it wasnt actually being used.
Connect it up and set all platforms to 250Hz.  This pretty much mimics the
ppc64 patch from Anton Blanchard.

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>
2005-09-05 00:05:58 -07:00
Kumar Gala
88adfe70c6 [PATCH] ppc32: ppc_sys system on chip identification additions
Add the ability to identify an SOC by a name and id.  There are cases in
which the integer identifier is not sufficient to specify a specific SOC.
In these cases we can use a string to further qualify the match.

Signed-off-by: Vitaly Bordug <vbordug@ru.mvista.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>
2005-09-05 00:05:58 -07:00
Eugene Surovegin
fa71f0e0f5 [PATCH] ppc32: disable IBM405_ERR77 and IBM405_ERR51 workarounds for 405EP
Disable IBM405_ERR77 and IBM405_ERR51 errata workarounds for 405EP.  This
chip has these problems fixed.

Signed-off-by: Eugene Surovegin <ebs@ebshome.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-05 00:05:58 -07:00
Eugene Surovegin
cc50664420 [PATCH] ppc32: fix Bamboo and Luan build warnings
Fix STD_UART_OP definitions in Bamboo and Luan board ports which were
causing "initialization makes pointer from integer without a cast"
warnings.

Signed-off-by: Eugene Surovegin <ebs@ebshome.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-05 00:05:58 -07:00
Eugene Surovegin
cce9d7e36f [PATCH] ppc32: fix EMAC Tx channel assignments for NPe405H
Fix PowerPC NPe405H EMAC Tx channel assignments.  EMAC unit in this chip
uses common for 4xx "two Tx / one Rx" configuration.

Signed-off-by: Eugene Surovegin <ebs@ebshome.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-05 00:05:58 -07:00
Roland Dreier
5a6a4d4320 [PATCH] ppc32: Don't sleep in flush_dcache_icache_page()
flush_dcache_icache_page() will be called on an instruction page fault.  We
can't sleep in the fault handler, so use kmap_atomic() instead of just
kmap() for the Book-E case.

Signed-off-by: Roland Dreier <rolandd@cisco.com>
Acked-by: Matt Porter <mporter@kernel.crashing.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-05 00:05:57 -07:00
Matt Porter
656de7e469 [PATCH] ppc32: add cputable entry for 440SP Rev. A
Adds the appropriate cputable entry for PPC440SP so cache line sizes are
configured correctly.

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>
2005-09-05 00:05:57 -07:00
Kumar Gala
ac6295c289 [PATCH] ppc32: removed find_name.c
No one uses find_name.c and no one seems to care about either.  So I'm
removing it.

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>
2005-09-05 00:05:57 -07:00
Eugene Surovegin
9149fb3b8e [PATCH] ppc32: add 440GX rev.F cputable entry
Add PowerPC 440GX rev.F cputable entry.

Signed-off-by: Eugene Surovegin <ebs@ebshome.net>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Matt Porter <mporter@kernel.crashing.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-05 00:05:57 -07:00
Kumar Gala
39cdc4bfb5 [PATCH] ppc32: Cleaned up global namespace of Book-E watchdog variables
Renamed global variables used to convey if the watchdog is enabled and
periodicity of the timer and moved the declarations into a header for these
variables

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>
2005-09-05 00:05:57 -07:00
Kumar Gala
b0531b9b32 [PATCH] cpm_uart: Fix baseaddress for SMC 1 and 2
Base addess register for SMC 1 and 2 are never initialized.  This means
that they will not work unless a bootloader already configured them.

The DPRAM already have space reserved, this patch just makes sure the base
addess register is updated correctly on initialization.

Signed-off-by: Rune Torgersen <runet@innovsys.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>
2005-09-05 00:05:56 -07:00
Kumar Gala
638861d54e [PATCH] cpm_uart: use schedule_timeout instead of direct call to schedule
use schedule_timeout instead of direct call to schedule

Signed-off-by: Marcelo Tosatti <marcelo.tosatti@cyclades.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>
2005-09-05 00:05:56 -07:00
Kumar Gala
0d8ba1a979 [PATCH] cpm_uart: Fix 2nd serial port on MPC8560 ADS
The 2nd serial port on the MPC8560 ADS was not being configured correctly
and thus could not be used as a console.  Updated the defconfig for the
board to configure the proper SCC channel for the 2nd serial port.

Signed-off-by: Roy Zang <tie-fei.zang@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>
2005-09-05 00:05:56 -07:00
Matt Porter
2698ebcb43 [PATCH] ppc32: add phy excluded features to ocp_func_emac_data
This patch adds a field to struct ocp_func_emac_data that allows
platform-specific unsupported PHY features to be passed in to the ibm_emac
ethernet driver.

This patch also adds some logic for the Bamboo eval board to populate this
field based on the dip switches on the board.  This is a workaround for the
improperly biased RJ-45 sockets on the Rev.  0 Bamboo.

Signed-off-by: Wade Farnsworth <wfarnsworth@mvista.com>
Signed-off-by: Matt Porter <mporter@kernel.crashing.org>
Cc: Jeff Garzik <jgarzik@pobox.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-05 00:05:56 -07:00
Kumar Gala
8e8fff0975 [PATCH] ppc32: Add ppc_sys descriptions for PowerQUICC II devices
Added ppc_sys device and system definitions for PowerQUICC II devices.
This will allow drivers for PQ2 to be proper platform device drivers.
Which can be shared on PQ3 processors with the same peripherals.

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>
2005-09-05 00:05:56 -07:00
Kumar Gala
a2f40ccd29 [PATCH] ppc32: Added support for the Book-E style Watchdog Timer
PowerPC 40x and Book-E processors support a watchdog timer at the processor
core level.  The timer has implementation dependent timeout frequencies
that can be configured by software.

One the first Watchdog timeout we get a critical exception.  It is left to
board specific code to determine what should happen at this point.  If
nothing is done and another timeout period expires the processor may
attempt to reset the machine.

Command line parameters:
  wdt=0 : disable watchdog (default)
  wdt=1 : enable watchdog

  wdt_period=N : N sets the value of the Watchdog Timer Period.

  The Watchdog Timer Period meaning is implementation specific. Check
  User Manual for the processor for more details.

This patch is based off of work done by Takeharu Kato.

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>
2005-09-05 00:05:56 -07:00
Matt Porter
886b9fa499 [PATCH] ppc32: Add usb support to IBM stb04xxx platforms
Support ochi-ppc-soc.c on IBM stb04xxx platforms

Signed-off-by: Dale Farnsworth <dale@farnsworth.org>
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>
2005-09-05 00:05:55 -07:00
Christoph Hellwig
d27477c225 [PATCH] ppc32: fix asm-ppc/dma-mapping.h sparse warning
GFP flags must be passed as unisgned int __nocast these days, else we'll
get tons of sparse warnings in every driver.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-05 00:05:55 -07:00
Kumar Gala
617bf9a47f [PATCH] ppc32: Remove board support for PCORE
Support for the PCORE board is no longer maintained and thus being removed

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>
2005-09-05 00:05:55 -07:00
Kumar Gala
f4ad35a34b [PATCH] ppc32: Remove board support for SPD823TS
Support for the SPD823TS board is no longer maintained and thus being removed

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>
2005-09-05 00:05:55 -07:00
Kumar Gala
8b1a97776d [PATCH] ppc32: Remove board support for SM850
Support for the SM850 board is no longer maintained and thus being removed

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>
2005-09-05 00:05:55 -07:00
Kumar Gala
ea08dcfa54 [PATCH] ppc32: Remove board support for REDWOOD
Support for the REDWOOD board is no longer maintained and thus being removed

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>
2005-09-05 00:05:54 -07:00
Kumar Gala
d2d34169cc [PATCH] ppc32: Remove board support for RAINIER
Support for the RAINIER board is no longer maintained and thus being removed

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>
2005-09-05 00:05:54 -07:00
Kumar Gala
37330c9146 [PATCH] ppc32: Remove board support for OAK
Support for the OAK board is no longer maintained and thus being removed

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>
2005-09-05 00:05:54 -07:00
Kumar Gala
6db789b6a3 [PATCH] ppc32: Remove board support for MENF1
Support for the MENF1 board is no longer maintained and thus being removed

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>
2005-09-05 00:05:54 -07:00
Kumar Gala
89d7f53030 [PATCH] ppc32: Remove board support for MCPN765
Support for the MCPN765 board is no longer maintained and thus being removed

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>
2005-09-05 00:05:54 -07:00
Kumar Gala
ba9d1e2a3d [PATCH] ppc32: Remove board support for K2
Support for the K2 board is no longer maintained and thus being removed

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>
2005-09-05 00:05:53 -07:00
Kumar Gala
94cb20e951 [PATCH] ppc32: Remove defconfig for CEDAR
Support for the CEDAR board no longer exists, removing the defconfig for it

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>
2005-09-05 00:05:53 -07:00
Kumar Gala
b8bc6cedb2 [PATCH] ppc32: Remove board support for BEECH
Support for the BEECH board is no longer maintained and thus being removed

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>
2005-09-05 00:05:53 -07:00
Kumar Gala
f4f1269cb3 [PATCH] ppc32: Remove board support for ASH
Support for the ASH board is no longer maintained and thus being removed

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>
2005-09-05 00:05:53 -07:00
Kumar Gala
a3800d8ffa [PATCH] ppc32: Remove board support for ADIR
Support for the ADIR board is no longer maintained and thus being removed

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>
2005-09-05 00:05:52 -07:00
Adrian Bunk
4b4dc82247 [PATCH] arch/ppc/kernel/ppc_ksyms.c: remove unused #define EXPORT_SYMTAB_STROPS
This #define is only used on sparc.

Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-05 00:05:52 -07:00
Stephen Smalley
f549d6c18c [PATCH] Generic VFS fallback for security xattrs
This patch modifies the VFS setxattr, getxattr, and listxattr code to fall
back to the security module for security xattrs if the filesystem does not
support xattrs natively.  This allows security modules to export the incore
inode security label information to userspace even if the filesystem does
not provide xattr storage, and eliminates the need to individually patch
various pseudo filesystem types to provide such access.  The patch removes
the existing xattr code from devpts and tmpfs as it is then no longer
needed.

The patch restructures the code flow slightly to reduce duplication between
the normal path and the fallback path, but this should only have one
user-visible side effect - a program may get -EACCES rather than
-EOPNOTSUPP if policy denied access but the filesystem didn't support the
operation anyway.  Note that the post_setxattr hook call is not needed in
the fallback case, as the inode_setsecurity hook call handles the incore
inode security state update directly.  In contrast, we do call fsnotify in
both cases.

Signed-off-by: Stephen Smalley <sds@tycho.nsa.gov>
Acked-by: James Morris <jmorris@namei.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-05 00:05:52 -07:00
Alexey Dobriyan
b5bf6c55ed [PATCH] selinux: endian notations
This patch adds endian notations to the SELinux code.

Signed-off-by: Stephen Smalley <sds@tycho.nsa.gov>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-05 00:05:51 -07:00
Stephen Smalley
782ebb992e [PATCH] selinux: Reduce memory use by avtab
This patch improves memory use by SELinux by both reducing the avtab node
size and reducing the number of avtab nodes.  The memory savings are
substantial, e.g.  on a 64-bit system after boot, James Morris reported the
following data for the targeted and strict policies:

            #objs  objsize   kernmem
Targeted:
  Before:  237888       40     9.1MB
  After:    19968       24     468KB

Strict:
  Before:  571680       40   21.81MB
  After:   221052       24    5.06MB

The improvement in memory use comes at a cost in the speed of security
server computations of access vectors, but these computations are only
required on AVC cache misses, and performance measurements by James Morris
using a number of benchmarks have shown that the change does not cause any
significant degradation.

Note that a rebuilt policy via an updated policy toolchain
(libsepol/checkpolicy) is required in order to gain the full benefits of
this patch, although some memory savings benefits are immediately applied
even to older policies (in particular, the reduction in avtab node size).
Sources for the updated toolchain are presently available from the
sourceforge CVS tree (http://sourceforge.net/cvs/?group_id=21266), and
tarballs are available from http://www.flux.utah.edu/~sds.

Signed-off-by: Stephen Smalley <sds@tycho.nsa.gov>
Signed-off-by: James Morris <jmorris@namei.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-05 00:05:50 -07:00
Egry Gabor
720d6c29e1 [PATCH] kconfig: linux.pot for all arch
The 'make update-po-config' creates the .pot file for the default arch.  This
patch enhances it with all arch.

Signed-off-by: Egry Gabor <gaboregry@t-online.hu>
Cc: Arnaldo Carvalho de Melo <acme@conectiva.com.br>
Cc: Roman Zippel <zippel@linux-m68k.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-05 00:05:49 -07:00
Egry Gabor
964267e627 [PATCH] kconfig: kxgettext: EOL fix
The end of line character doesn't exist on end of help in all case, check it
first.

Signed-off-by: Egry Gabor <gaboregry@t-online.hu>
Cc: Arnaldo Carvalho de Melo <acme@conectiva.com.br>
Cc: Roman Zippel <zippel@linux-m68k.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-05 00:05:49 -07:00
Egry Gabor
c196eff306 [PATCH] kconfig: kxgettext: message fix
The gettext doesn't handle the {CONFIG}:00000 markers as sources.  I added a
simple comment prefix for them.

Signed-off-by: Egry Gabor <gaboregry@t-online.hu>
Cc: Arnaldo Carvalho de Melo <acme@conectiva.com.br>
Cc: Roman Zippel <zippel@linux-m68k.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-05 00:05:49 -07:00
Martin Hicks
c07e02db76 [PATCH] VM: add page_state info to per-node meminfo
Add page_state info to the per-node meminfo file in sysfs.  This is mostly
just for informational purposes.

The lack of this information was brought up recently during a discussion
regarding pagecache clearing, and I put this patch together to test out one
of the suggestions.

It seems like interesting info to have, so I'm submitting the patch.

Signed-off-by: Martin Hicks <mort@sgi.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-05 00:05:49 -07:00
Mauricio Lin
e070ad49f3 [PATCH] add /proc/pid/smaps
Add a "smaps" entry to /proc/pid: show howmuch memory is resident in each
mapping.

People that want to perform a memory consumption analysing can use it
mainly if someone needs to figure out which libraries can be reduced for
embedded systems.  So the new features are the physical size of shared and
clean [or dirty]; private and clean [or dirty].

Take a look the example below:

# cat /proc/4576/smaps

08048000-080dc000 r-xp /bin/bash
Size:               592 KB
Rss:                500 KB
Shared_Clean:       500 KB
Shared_Dirty:         0 KB
Private_Clean:        0 KB
Private_Dirty:        0 KB
080dc000-080e2000 rw-p /bin/bash
Size:                24 KB
Rss:                 24 KB
Shared_Clean:         0 KB
Shared_Dirty:         0 KB
Private_Clean:        0 KB
Private_Dirty:       24 KB
080e2000-08116000 rw-p
Size:               208 KB
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(Includes a cleanup from "Richard Purdie" <rpurdie@rpsys.net>)

From: Torsten Foertsch <torsten.foertsch@gmx.net>

show_smap calls first show_map and then prints its additional information to
the seq_file.  show_map checks if all it has to print fits into the buffer and
if yes marks the current vma as written.  While that is correct for show_map
it is not for show_smap.  Here the vma should be marked as written only after
the additional information is also written.

The attached patch cures the problem.  It moves the functionality of the
show_map function to a new function show_map_internal that is called with an
additional struct mem_size_stats* argument.  Then show_map calls
show_map_internal with NULL as struct mem_size_stats* whereas show_smap calls
it with a real pointer.  Now the final

	if (m->count < m->size)  /* vma is copied successfully */
		m->version = (vma != get_gate_vma(task))? vma->vm_start: 0;

is done only if the whole entry fits into the buffer.

Signed-off-by: Hugh Dickins <hugh@veritas.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-05 00:05:49 -07:00
Manfred Spraul
00e145b6d5 [PATCH] slab: removes local_irq_save()/local_irq_restore() pair
Proposed by and based on a patch from Eric Dumazet <dada1@cosmosbay.com>:
This patch removes unnecessary critical section in ksize() function, as
cli/sti are rather expensive on modern CPUS.

It additionally adds a docbook entry for ksize() and further simplifies the
code.

Signed-Off-By: Manfred Spraul <manfred@colorfullife.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-05 00:05:49 -07:00
Eric Dumazet
34342e863c [PATCH] mm/slab.c: prefetchw the start of new allocated objects
Mostobjects returned by __cache_alloc() will be written by the caller,
(but not all callers want to write all the object, but just at the
begining) prefetchw() tells the modern CPU to think about the future
writes, ie start some memory transactions in advance.

Signed-off-by: Eric Dumazet <dada1@cosmosbay.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-05 00:05:48 -07:00
Zachary Amsden
61e06037e7 [PATCH] x86_64: avoid some atomic operations during address space destruction
Any architecture that has hardware updated A/D bits that require
synchronization against other processors during PTE operations can benefit
from doing non-atomic PTE updates during address space destruction.
Originally done on i386, now ported to x86_64.

Doing a read/write pair instead of an xchg() operation saves the implicit
lock, which turns out to be a big win on 32-bit (esp w PAE).

Signed-off-by: Zachary Amsden <zach@vmware.com>
Cc: Andi Kleen <ak@muc.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-05 00:05:48 -07:00
Zachary Amsden
a600388d28 [PATCH] x86: ptep_clear optimization
Add a new accessor for PTEs, which passes the full hint from the mmu_gather
struct; this allows architectures with hardware pagetables to optimize away
atomic PTE operations when destroying an address space.  Removing the
locked operation should allow better pipelining of memory access in this
loop.  I measured an average savings of 30-35 cycles per zap_pte_range on
the first 500 destructions on Pentium-M, but I believe the optimization
would win more on older processors which still assert the bus lock on xchg
for an exclusive cacheline.

Update: I made some new measurements, and this saves exactly 26 cycles over
ptep_get_and_clear on Pentium M.  On P4, with a PAE kernel, this saves 180
cycles per ptep_get_and_clear, for a whopping 92160 cycles savings for a
full address space destruction.

pte_clear_full is not yet used, but is provided for future optimizations
(in particular, when running inside of a hypervisor that queues page table
updates, the full hint allows us to avoid queueing unnecessary page table
update for an address space in the process of being destroyed.

This is not a huge win, but it does help a bit, and sets the stage for
further hypervisor optimization of the mm layer on all architectures.

Signed-off-by: Zachary Amsden <zach@vmware.com>
Cc: Christoph Lameter <christoph@lameter.com>
Cc: <linux-mm@kvack.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-05 00:05:48 -07:00
Kyle Moffett
fa5b08d5f8 [PATCH] sab: consolidate kmem_bufctl_t
This is used only in slab.c and each architecture gets to define whcih
underlying type is to be used.

Seems a bit silly - move it to slab.c and use the same type for all
architectures: unsigned int.

Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-05 00:05:48 -07:00