deliverable/linux.git
17 years agofreezer: measure freezing time
Rafael J. Wysocki [Thu, 18 Oct 2007 10:04:49 +0000 (03:04 -0700)] 
freezer: measure freezing time

Measure the time of the freezing of tasks, even if it doesn't fail.

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
17 years agofreezer: be more verbose
Rafael J. Wysocki [Thu, 18 Oct 2007 10:04:48 +0000 (03:04 -0700)] 
freezer: be more verbose

Increase the freezer's verbosity a bit, so that it's easier to read problem
reports related to it.

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Acked-by: Nigel Cunningham <nigel@nigel.suspend2.net>
Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
17 years agopm_trace displays the wrong time from the RTC
Rafael J. Wysocki [Thu, 18 Oct 2007 10:04:48 +0000 (03:04 -0700)] 
pm_trace displays the wrong time from the RTC

The way in which read_magic_time() displays the date read from the RTC is
apparently confusing to the users (cf.
https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=250238).  Make it
print dates in the standard way.

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Acked-by: Dave Jones <davej@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
17 years agounexport pm_power_off_prepare
Adrian Bunk [Thu, 18 Oct 2007 10:04:47 +0000 (03:04 -0700)] 
unexport pm_power_off_prepare

This patch removes the unused EXPORT_SYMBOL(pm_power_off_prepare).

Signed-off-by: Adrian Bunk <bunk@stusta.de>
Cc: "Rafael J. Wysocki" <rjw@sisk.pl>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
17 years agofreezer: do not send signals to kernel threads
Rafael J. Wysocki [Thu, 18 Oct 2007 10:04:46 +0000 (03:04 -0700)] 
freezer: do not send signals to kernel threads

The freezer should not send signals to kernel threads, since that may lead to
subtle problems.  In particular, commit
b74d0deb968e1f85942f17080eace015ce3c332c has changed recalc_sigpending_tsk()
so that it doesn't clear TIF_SIGPENDING.  For this reason, if the freezer
continues to send fake signals to kernel threads and the freezing of kernel
threads fails, some of them may be running with TIF_SIGPENDING set forever.

Accordingly, recalc_sigpending_tsk() shouldn't set the task's TIF_SIGPENDING
flag if TIF_FREEZE is set.

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Cc: Nigel Cunningham <nigel@nigel.suspend2.net>
Cc: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
17 years agofreezer: introduce freezer-friendly waiting macros
Rafael J. Wysocki [Thu, 18 Oct 2007 10:04:45 +0000 (03:04 -0700)] 
freezer: introduce freezer-friendly waiting macros

Introduce freezer-friendly wrappers around wait_event_interruptible() and
wait_event_interruptible_timeout(), originally defined in <linux/wait.h>, to
be used in freezable kernel threads.  Make some of the freezable kernel
threads use them.

This is necessary for the freezer to stop sending signals to kernel threads,
which is implemented in the next patch.

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Acked-by: Pavel Machek <pavel@ucw.cz>
Cc: Nigel Cunningham <nigel@nigel.suspend2.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
17 years agofreezer: prevent new tasks from inheriting TIF_FREEZE set
Rafael J. Wysocki [Thu, 18 Oct 2007 10:04:45 +0000 (03:04 -0700)] 
freezer: prevent new tasks from inheriting TIF_FREEZE set

Tasks should go to the refrigerator only if explicitly requested to do that by
the freezer and not as a result of inheriting the TIF_FREEZE flag set from the
parent.  Make it happen.

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Acked-by: Pavel Machek <pavel@ucw.cz>
Acked-by: Nigel Cunningham <nigel@nigel.suspend2.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
17 years agofreezer: do not sync filesystems from freeze_processes
Rafael J. Wysocki [Thu, 18 Oct 2007 10:04:44 +0000 (03:04 -0700)] 
freezer: do not sync filesystems from freeze_processes

The syncing of filesystems from within the freezer is generally not needed.
Also, if there's an ext3 filesystem loopback-mounted from a FUSE one, the
syncing results in writes to it and deadlocks.  Similarly, it will deadlock if
FUSE implements sync.

Change freeze_processes() so that it doesn't execute sys_sync() and make the
suspend and hibernation code path sync filesystems independently of the
freezer.

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Acked-by: Pavel Machek <pavel@ucw.cz>
Cc: Nigel Cunningham <nigel@nigel.suspend2.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
17 years agofreezer: document relationship with memory shrinking
Rafael J. Wysocki [Thu, 18 Oct 2007 10:04:43 +0000 (03:04 -0700)] 
freezer: document relationship with memory shrinking

One important reason to freeze tasks, which is that we don't want them to
allocate memory after freeing it for the hibernation image, has not been
documented.  Fix it.

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Acked-by: Pavel Machek <pavel@ucw.cz>
Acked-by: Nigel Cunningham <nigel@nigel.suspend2.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
17 years agoPM: Rename hibernation_ops to platform_hibernation_ops
Rafael J. Wysocki [Thu, 18 Oct 2007 10:04:43 +0000 (03:04 -0700)] 
PM: Rename hibernation_ops to platform_hibernation_ops

Rename 'struct hibernation_ops' to 'struct platform_hibernation_ops' in
analogy with 'struct platform_suspend_ops'.

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Acked-by: Pavel Machek <pavel@ucw.cz>
Cc: Len Brown <lenb@kernel.org>
Cc: Greg KH <greg@kroah.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
17 years agoPM: Rework struct hibernation_ops
Rafael J. Wysocki [Thu, 18 Oct 2007 10:04:42 +0000 (03:04 -0700)] 
PM: Rework struct hibernation_ops

During hibernation we also need to tell the ACPI core that we're going to put
the system into the S4 sleep state.  For this reason, an additional method in
'struct hibernation_ops' is needed, playing the role of set_target() in
'struct platform_suspend_operations'.  Moreover, the role of the .prepare()
method is now different, so it's better to introduce another method, that in
general may be different from .prepare(), that will be used to prepare the
platform for creating the hibernation image (.prepare() is used anyway to
notify the platform that we're going to enter the low power state after the
image has been saved).

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
17 years agoPM: Make suspend_ops static
Rafael J. Wysocki [Thu, 18 Oct 2007 10:04:41 +0000 (03:04 -0700)] 
PM: Make suspend_ops static

The variable suspend_ops representing the set of global platform-specific
suspend-related operations, used by the PM core, need not be exported outside
of kernel/power/main.c .   Make it static.

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
17 years agoPM: Rework struct platform_suspend_ops
Rafael J. Wysocki [Thu, 18 Oct 2007 10:04:41 +0000 (03:04 -0700)] 
PM: Rework struct platform_suspend_ops

There is no reason why the .prepare() and .finish() methods in 'struct
platform_suspend_ops' should take any arguments, since architectures don't use
these methods' argument in any practically meaningful way (ie.  either the
target system sleep state is conveyed to the platform by .set_target(), or
there is only one suspend state supported and it is indicated to the PM core
by .valid(), or .prepare() and .finish() aren't defined at all).   There also
is no reason why .finish() should return any result.

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Acked-by: Pavel Machek <pavel@ucw.cz>
Cc: Len Brown <lenb@kernel.org>
Cc: Greg KH <greg@kroah.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
17 years agoPM: Rename struct pm_ops and related things
Rafael J. Wysocki [Thu, 18 Oct 2007 10:04:40 +0000 (03:04 -0700)] 
PM: Rename struct pm_ops and related things

The name of 'struct pm_ops' suggests that it is related to the power
management in general, but in fact it is only related to suspend.   Moreover,
its name should indicate what this structure is used for, so it seems
reasonable to change it to 'struct platform_suspend_ops'.   In that case, the
name of the global variable of this type used by the PM core and the names of
related functions should be changed accordingly.

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Acked-by: Pavel Machek <pavel@ucw.cz>
Cc: Len Brown <lenb@kernel.org>
Cc: Greg KH <greg@kroah.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
17 years agoPM: Move definition of struct pm_ops to suspend.h
Rafael J. Wysocki [Thu, 18 Oct 2007 10:04:39 +0000 (03:04 -0700)] 
PM: Move definition of struct pm_ops to suspend.h

Move the definition of 'struct pm_ops' and related functions from <linux/pm.h>
to <linux/suspend.h> .

There are, at least, the following reasons to do that:
* 'struct pm_ops' is specifically related to suspend and not to the power
  management in general.
* As long as 'struct pm_ops' is defined in <linux/pm.h>, any modification of it
  causes the entire kernel to be recompiled, which is unnecessary and annoying.
* Some suspend-related features are already defined in <linux/suspend.h>, so it
  is logical to move the definition of 'struct pm_ops' into there.
* 'struct hibernation_ops', being the hibernation-related counterpart of
  'struct pm_ops', is defined in <linux/suspend.h> .

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Acked-by: Pavel Machek <pavel@ucw.cz>
Cc: Len Brown <lenb@kernel.org>
Cc: Greg KH <greg@kroah.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
17 years agomake kernel/power/main.c:suspend_enter() static
Adrian Bunk [Thu, 18 Oct 2007 10:04:37 +0000 (03:04 -0700)] 
make kernel/power/main.c:suspend_enter() static

suspend_enter() can now become static.

Signed-off-by: Adrian Bunk <bunk@kernel.org>
Cc: "Rafael J. Wysocki" <rjw@sisk.pl>
Cc: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
17 years agologo.c: get rid of mips_machgroup
Ralf Baechle [Thu, 18 Oct 2007 10:04:37 +0000 (03:04 -0700)] 
logo.c: get rid of mips_machgroup

This has not been any serious user of this ill conceived thing since the
original invention in like '95 so I recently deleted this from everywhere
except the last instance in logo.c.  This patch removes the last two
instances in logo.c.  They conditions were not useful anyway as when
compiled in they would always evaluate as true.

Last not least this is necessary to get the SGI IP22 and DECstation kernels
to compile again.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Cc: "Antonino A. Daplas" <adaplas@pol.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
17 years agofb modedb: Refactor confusing mode_option assignment
Geert Uytterhoeven [Thu, 18 Oct 2007 10:04:36 +0000 (03:04 -0700)] 
fb modedb: Refactor confusing mode_option assignment

Signed-off-by: Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com>
Cc: "Antonino A. Daplas" <adaplas@pol.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
17 years agotty_ioctl: fix the baud_table check in encode_baud_rate
Maciej W. Rozycki [Thu, 18 Oct 2007 10:04:35 +0000 (03:04 -0700)] 
tty_ioctl: fix the baud_table check in encode_baud_rate

The tty_termios_encode_baud_rate() function as defined by tty_ioctl.c has a
problem with the baud_table within.  The comparison operators are reversed
and as a result this table's entries never match and BOTHER is always used.

Signed-off-by: Maciej W. Rozycki <macro@linux-mips.org>
Acked-by: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
17 years agoRemove CONFIG_VT_UNICODE
Jan Engelhardt [Thu, 18 Oct 2007 10:04:34 +0000 (03:04 -0700)] 
Remove CONFIG_VT_UNICODE

Since default_utf8 is already a sysfs attribute, having an extra
CONFIG_VT_UNICODE compile-time option is redundant, since sysfs attributes can
be set at boot and run time.

Also let Linux VCs default to UTF-8 (as per the discussion at
http://lkml.org/lkml/2007/9/6/99).

Signed-off-by: Jan Engelhardt <jengelh@computergmbh.de>
Cc: Bill Nottingham <notting@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
17 years agoKexec: Update URL in MAINTAINERS file
Signed-off-by@vergenet.net":Simon [Thu, 18 Oct 2007 10:04:33 +0000 (03:04 -0700)] 
Kexec: Update URL in MAINTAINERS file

I'm not sure that the new URL satifies the requirement of status/info, but
it does at least as good a job as the old URL, and contains current
releases of kexec-tools, rather than somewhat ancient versions.

Signed-off-by: Simon Horman <horms@verge.net.au>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
17 years agoi4l: Fix random hard freeze with AVM c4 card
Karsten Keil [Thu, 18 Oct 2007 10:04:32 +0000 (03:04 -0700)] 
i4l: Fix random hard freeze with AVM c4 card

The patch
- Includes the call to capilib_data_b3_req in the spinlock. This routine
  in turn calls the offending mq_enqueue routine that triggered the
  freeze if not locked.  This should also fix other indicators of
  incosistent capilib_msgidqueue list, that trigger messages like:
  Oct  5 03:05:57 BERL0 kernel: kcapi: msgid 3019 ncci 0x30301 not on queue
  that we saw several times a day (usually several in a row).
- Fixes all occurrences of c4_dispatch_tx to be called with active
  spinlock, there were some instances where no lock was active. Mostly
  these are in very infrequently called routines, so the additional
  performance penalty is minimal.

Signed-off-by: Karsten Keil <kkeil@suse.de>
Signed-off-by: Rainer Brestan <rainer.brestan@frequentis.com>
Signed-off-by: Ralf Schlatterbeck <rsc@runtux.com>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
17 years agoi4l: fix random freezes with AVM B1 drivers
Karsten Keil [Thu, 18 Oct 2007 10:04:31 +0000 (03:04 -0700)] 
i4l: fix random freezes with AVM B1 drivers

This fix the same issue which was debbuged for the C4 controller for the B1
versions.

The capilib_ function modify or traverse a linked list without locking.

This patch extends the existing locking to the calls of these function to
prevent access to a list which is in the middle of a modification.

Signed-off-by: Karsten Keil <kkeil@suse.de>
C: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
17 years agoau1100fb: fix modpost warnings
Ralf Baechle [Thu, 18 Oct 2007 10:04:30 +0000 (03:04 -0700)] 
au1100fb: fix modpost warnings

  MODPOST vmlinux.o
WARNING: vmlinux.o(.text+0x170be8): Section mismatch: reference to .init.data:au1100fb_fix (between 'au1100fb_drv_probe' and 'read_null')
WARNING: vmlinux.o(.text+0x170dc4): Section mismatch: reference to .init.data:au1100fb_var (between 'au1100fb_drv_probe' and 'read_null')
WARNING: vmlinux.o(.text+0x170dd0): Section mismatch: reference to .init.data:au1100fb_fix (between 'au1100fb_drv_probe' and 'read_null')
WARNING: vmlinux.o(.text+0x170de0): Section mismatch: reference to .init.data:au1100fb_var (between 'au1100fb_drv_probe' and 'read_null')
WARNING: vmlinux.o(.text+0x170e70): Section mismatch: reference to .init.data:au1100fb_var (between 'au1100fb_drv_probe' and 'read_null')

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Cc: "Antonino A. Daplas" <adaplas@pol.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
17 years agonetport_con.c: fix build errors and warnings
Ralf Baechle [Thu, 18 Oct 2007 10:04:29 +0000 (03:04 -0700)] 
netport_con.c: fix build errors and warnings

Fix build broken by accaa24c492f1aa3b9c37226d868dc59c3007531:

  CC      drivers/video/console/newport_con.o
drivers/video/console/newport_con.c: In function 'newport_show_logo':
drivers/video/console/newport_con.c:111: error: assignment of read-only location
drivers/video/console/newport_con.c:111: warning: assignment makes integer from pointer without a cast
drivers/video/console/newport_con.c:112: error: assignment of read-only location
drivers/video/console/newport_con.c:112: warning: assignment makes integer from pointer without a cast

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Cc: "Randy.Dunlap" <rdunlap@xenotime.net>
Cc: "Antonino A. Daplas" <adaplas@pol.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
17 years agoext4: lighten up resize transaction requirements
Eric Sandeen [Tue, 16 Oct 2007 22:38:25 +0000 (18:38 -0400)] 
ext4: lighten up resize transaction requirements

When resizing online, setup_new_group_blocks attempts to reserve a
potentially very large transaction, depending on the current filesystem
geometry.  For some journal sizes, there may not be enough room for this
transaction, and the online resize will fail.

The patch below resizes & restarts the transaction as necessary while
setting up the new group, and should work with even the smallest journal.

Tested with something like:

[root@newbox ~]# dd if=/dev/zero of=fsfile bs=1024 count=32768
[root@newbox ~]# mkfs.ext3 -b 1024 fsfile 16384
[root@newbox ~]# mount -o loop fsfile mnt/
[root@newbox ~]# resize2fs /dev/loop0
resize2fs 1.40.2 (12-Jul-2007)
Filesystem at /dev/loop0 is mounted on /root/mnt; on-line resizing required
old desc_blocks = 1, new_desc_blocks = 1
Performing an on-line resize of /dev/loop0 to 32768 (1k) blocks.
resize2fs: No space left on device While trying to add group #2
[root@newbox ~]# dmesg | tail -n 1
JBD: resize2fs wants too many credits (258 > 256)
[root@newbox ~]#

With the below change, it works.

Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Signed-off-by: Mingming Cao <cmm@us.ibm.com>
Acked-by: Andreas Dilger <adilger@clusterfs.com>
17 years agoext4: fix setup_new_group_blocks locking
Eric Sandeen [Tue, 16 Oct 2007 22:38:25 +0000 (18:38 -0400)] 
ext4: fix setup_new_group_blocks locking

setup_new_group_blocks() manipulates the group descriptor block bh
under the block_bitmap bh's lock.  It shouldn't matter since nobody
but resize should be touching these blocks, but it's worth fixing up.

Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Signed-off-by: Mingming Cao <cmm@us.ibm.com>
17 years agoext4: sparse fixes
Aneesh Kumar K.V [Tue, 16 Oct 2007 22:38:25 +0000 (18:38 -0400)] 
ext4: sparse fixes

Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
17 years agoext4: Convert ext4_extent_idx.ei_leaf to ext4_extent_idx.ei_leaf_lo
Aneesh Kumar K.V [Tue, 16 Oct 2007 22:38:25 +0000 (18:38 -0400)] 
ext4: Convert ext4_extent_idx.ei_leaf to ext4_extent_idx.ei_leaf_lo

Convert ext4_extent_idx.ei_leaf  ext4_extent_idx.ei_leaf_lo
This helps in finding BUGs due to direct partial access of
these split 48 bit values.

Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
17 years agoext4: Convert ext4_extent.ee_start to ext4_extent.ee_start_lo
Aneesh Kumar K.V [Tue, 16 Oct 2007 22:38:25 +0000 (18:38 -0400)] 
ext4: Convert ext4_extent.ee_start to ext4_extent.ee_start_lo

Convert ext4_extent.ee_start to ext4_extent.ee_start_lo
This helps in finding BUGs due to direct partial access of
these split 48 bit values

Also fix direct partial access in ext4 code

Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
17 years agoext4: Convert s_r_blocks_count and s_free_blocks_count
Aneesh Kumar K.V [Tue, 16 Oct 2007 22:38:25 +0000 (18:38 -0400)] 
ext4: Convert s_r_blocks_count and s_free_blocks_count

Convert s_r_blocks_count and s_free_blocks_count to
s_r_blocks_count_lo and s_free_blocks_count_lo

This helps in finding BUGs due to direct partial access of
these split 64 bit values

Also fix direct partial access in ext4 code

Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
17 years agoext4: Convert s_blocks_count to s_blocks_count_lo
Aneesh Kumar K.V [Tue, 16 Oct 2007 22:38:25 +0000 (18:38 -0400)] 
ext4: Convert s_blocks_count to s_blocks_count_lo

Convert s_blocks_count to s_blocks_count_lo
This helps in finding BUGs due to direct partial access of
these split 64 bit values

Also fix direct partial access in ext4 code

Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
17 years agoext4: Convert bg_inode_bitmap and bg_inode_table
Aneesh Kumar K.V [Tue, 16 Oct 2007 22:38:25 +0000 (18:38 -0400)] 
ext4: Convert bg_inode_bitmap and bg_inode_table

Convert bg_inode_bitmap and bg_inode_table to bg_inode_bitmap_lo
and bg_inode_table_lo.  This helps in finding BUGs due to
direct partial access of these split 64 bit values

Also fix one direct partial access

Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
17 years agoext4: Convert bg_block_bitmap to bg_block_bitmap_lo
Aneesh Kumar K.V [Tue, 16 Oct 2007 22:38:25 +0000 (18:38 -0400)] 
ext4: Convert bg_block_bitmap to bg_block_bitmap_lo

Convert bg_block_bitmap to bg_block_bitmap_lo
This helps in catching some BUGS due to direct
partial access of these split fields.

Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
17 years agoext4: FLEX_BG Kernel support v2.
Jose R. Santos [Tue, 16 Oct 2007 22:38:25 +0000 (18:38 -0400)] 
ext4: FLEX_BG Kernel support v2.

This feature relaxes check restrictions on where each block groups meta
data is located within the storage media.  This allows for the allocation
of bitmaps or inode tables outside the block group boundaries in cases
where bad blocks forces us to look for new blocks which the owning block
group can not satisfy.  This will also allow for new meta-data allocation
schemes to improve performance and scalability.

Signed-off-by: Jose R. Santos <jrs@us.ibm.com>
Cc: <linux-ext4@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
17 years agoext4: Fix sparse warnings
Aneesh Kumar K.V [Tue, 16 Oct 2007 22:38:25 +0000 (18:38 -0400)] 
ext4: Fix sparse warnings

Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
17 years agoExt4: Uninitialized Block Groups
Andreas Dilger [Tue, 16 Oct 2007 22:38:25 +0000 (18:38 -0400)] 
Ext4: Uninitialized Block Groups

In pass1 of e2fsck, every inode table in the fileystem is scanned and checked,
regardless of whether it is in use.  This is this the most time consuming part
of the filesystem check.  The unintialized block group feature can greatly
reduce e2fsck time by eliminating checking of uninitialized inodes.

With this feature, there is a a high water mark of used inodes for each block
group.  Block and inode bitmaps can be uninitialized on disk via a flag in the
group descriptor to avoid reading or scanning them at e2fsck time.  A checksum
of each group descriptor is used to ensure that corruption in the group
descriptor's bit flags does not cause incorrect operation.

The feature is enabled through a mkfs option

mke2fs /dev/ -O uninit_groups

A patch adding support for uninitialized block groups to e2fsprogs tools has
been posted to the linux-ext4 mailing list.

The patches have been stress tested with fsstress and fsx.  In performance
tests testing e2fsck time, we have seen that e2fsck time on ext3 grows
linearly with the total number of inodes in the filesytem.  In ext4 with the
uninitialized block groups feature, the e2fsck time is constant, based
solely on the number of used inodes rather than the total inode count.
Since typical ext4 filesystems only use 1-10% of their inodes, this feature can
greatly reduce e2fsck time for users.  With performance improvement of 2-20
times, depending on how full the filesystem is.

The attached graph shows the major improvements in e2fsck times in filesystems
with a large total inode count, but few inodes in use.

In each group descriptor if we have

EXT4_BG_INODE_UNINIT set in bg_flags:
        Inode table is not initialized/used in this group. So we can skip
        the consistency check during fsck.
EXT4_BG_BLOCK_UNINIT set in bg_flags:
        No block in the group is used. So we can skip the block bitmap
        verification for this group.

We also add two new fields to group descriptor as a part of
uninitialized group patch.

        __le16  bg_itable_unused;       /* Unused inodes count */
        __le16  bg_checksum;            /* crc16(sb_uuid+group+desc) */

bg_itable_unused:

If we have EXT4_BG_INODE_UNINIT not set in bg_flags
then bg_itable_unused will give the offset within
the inode table till the inodes are used. This can be
used by fsck to skip list of inodes that are marked unused.

bg_checksum:
Now that we depend on bg_flags and bg_itable_unused to determine
the block and inode usage, we need to make sure group descriptor
is not corrupt. We add checksum to group descriptor to
detect corruption. If the descriptor is found to be corrupt, we
mark all the blocks and inodes in the group used.

Signed-off-by: Avantika Mathur <mathur@us.ibm.com>
Signed-off-by: Andreas Dilger <adilger@clusterfs.com>
Signed-off-by: Mingming Cao <cmm@us.ibm.com>
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
17 years agoext4: remove #ifdef CONFIG_EXT4_INDEX
Eric Sandeen [Tue, 16 Oct 2007 22:38:25 +0000 (18:38 -0400)] 
ext4: remove #ifdef CONFIG_EXT4_INDEX

CONFIG_EXT4_INDEX is not an exposed config option in the kernel, and it is
unconditionally defined in ext4_fs.h.  tune2fs is already able to turn off
dir indexing, so at this point it's just cluttering up the code.  Remove
it.

Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Signed-off-by: Mingming Cao <cmm@us.ibm.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
17 years agoext4: Remove (partial, never completed) fragment support
Coly Li [Tue, 16 Oct 2007 22:38:25 +0000 (18:38 -0400)] 
ext4: Remove (partial, never completed) fragment support

Fragment support in ext2/3/4 was never implemented, and it probably will
never be implemented.   So remove it from ext4.

Signed-off-by: Coly Li <coyli@suse.de>
Acked-by: Andreas Dilger <adilger@clusterfs.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
17 years agoJBD2: debug code cleanup.
Jose R. Santos [Tue, 16 Oct 2007 22:38:25 +0000 (18:38 -0400)] 
JBD2: debug code cleanup.

Mostly stolen from akpm's JBD cleanup patch.

- use `#ifdef foo' instead of `#if defined(foo)'

- Make journal_enable_debug __read_mostly just for the heck of it

- Make jbd_debugfs_dir and jbd_debug static

- debugfs_remove(NULL) is legal: remove unneeded tests

- remove unnecessary empty loops

Signed-off-by: Jose R. Santos <jrs@us.ibm.com>
Cc: <linux-ext4@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
17 years agojbd2: fix commit code to properly abort journal
Jan Kara [Tue, 16 Oct 2007 22:38:25 +0000 (18:38 -0400)] 
jbd2: fix commit code to properly abort journal

We should really call journal_abort() and not __journal_abort_hard() in
case of errors.  The latter call does not record the error in the journal
superblock and thus filesystem won't be marked as with errors later (and
user could happily mount it without any warning).

Signed-off-by: Jan Kara <jack@suse.cz>
Cc: <linux-ext4@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
17 years agojbd2: JBD_XXX to JBD2_XXX naming cleanup
Mingming Cao [Tue, 16 Oct 2007 22:38:25 +0000 (18:38 -0400)] 
jbd2: JBD_XXX to JBD2_XXX naming cleanup

change JBD_XXX macros to JBD2_XXX in JBD2/Ext4

Signed-off-by: Mingming Cao <cmm@us.ibm.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
17 years agoJBD2/Ext4: Convert kmalloc to kzalloc in jbd2/ext4
Mingming Cao [Tue, 16 Oct 2007 22:38:25 +0000 (18:38 -0400)] 
JBD2/Ext4: Convert kmalloc to kzalloc in jbd2/ext4

Convert kmalloc to kzalloc() and get rid of the memset().

Signed-off-by: Mingming Cao <cmm@us.ibm.com>
17 years agoJBD2: replace jbd_kmalloc with kmalloc directly.
Mingming Cao [Tue, 16 Oct 2007 22:38:25 +0000 (18:38 -0400)] 
JBD2: replace jbd_kmalloc with kmalloc directly.

This patch cleans up jbd_kmalloc and replace it with kmalloc directly

Signed-off-by: Mingming Cao <cmm@us.ibm.com>
17 years agoJBD: replace jbd_kmalloc with kmalloc directly
Mingming Cao [Tue, 16 Oct 2007 22:38:25 +0000 (18:38 -0400)] 
JBD: replace jbd_kmalloc with kmalloc directly

This patch cleans up jbd_kmalloc and replace it with kmalloc directly

Signed-off-by: Mingming Cao <cmm@us.ibm.com>
17 years agoJBD2: jbd2 slab allocation cleanups
Mingming Cao [Tue, 16 Oct 2007 22:38:25 +0000 (18:38 -0400)] 
JBD2: jbd2 slab allocation cleanups

JBD2: Replace slab allocations with page allocations

JBD2 allocate memory for committed_data and frozen_data from slab. However
JBD2 should not pass slab pages down to the block layer. Use page allocator
pages instead. This will also prepare JBD for the large blocksize patchset.

Signed-off-by: Christoph Lameter <clameter@sgi.com>
Signed-off-by: Mingming Cao <cmm@us.ibm.com>
17 years agoJBD: JBD slab allocation cleanups
Mingming Cao [Tue, 16 Oct 2007 22:38:25 +0000 (18:38 -0400)] 
JBD: JBD slab allocation cleanups

JBD: Replace slab allocations with page allocations

JBD allocate memory for committed_data and frozen_data from slab. However
JBD should not pass slab pages down to the block layer. Use page allocator pages instead. This will also prepare JBD for the large blocksize patchset.

Signed-off-by: Christoph Lameter <clameter@sgi.com>
Signed-off-by: Mingming Cao <cmm@us.ibm.com>
17 years agoMerge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6
Linus Torvalds [Wed, 17 Oct 2007 22:13:42 +0000 (15:13 -0700)] 
Merge branch 'release' of git://git./linux/kernel/git/aegl/linux-2.6

* 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6:
  [IA64] fix non-numa build

17 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ericvh...
Linus Torvalds [Wed, 17 Oct 2007 22:05:58 +0000 (15:05 -0700)] 
Merge branch 'for-linus' of git://git./linux/kernel/git/ericvh/v9fs

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ericvh/v9fs:
  9p: remove sysctl
  9p: fix bad kconfig cross-dependency
  9p: soften invalidation in loose_mode
  9p: attach-per-user
  9p: rename uid and gid parameters
  9p: define session flags
  9p: Make transports dynamic

17 years ago[IA64] fix non-numa build
Andrew Morton [Wed, 17 Oct 2007 21:28:38 +0000 (14:28 -0700)] 
[IA64] fix non-numa build

arch/ia64/kernel/machine_kexec.c: In function `arch_crash_save_vmcoreinfo':
arch/ia64/kernel/machine_kexec.c:131: error: `pgdat_list' undeclared (first use in this function)
arch/ia64/kernel/machine_kexec.c:131: error: (Each undeclared identifier is reported only once
arch/ia64/kernel/machine_kexec.c:131: error: for each function it appears in.)
arch/ia64/kernel/machine_kexec.c:134: error: `node_memblk' undeclared (first use in this function)
arch/ia64/kernel/machine_kexec.c:135: error: `NR_NODE_MEMBLKS' undeclared (first use in this function)
arch/ia64/kernel/machine_kexec.c:136: error: invalid application of `sizeof' to incomplete type `node_memblk_s'
arch/ia64/kernel/machine_kexec.c:137: error: dereferencing pointer to incomplete type
arch/ia64/kernel/machine_kexec.c:138: error: dereferencing pointer to incomplete type
make[1]: *** [arch/ia64/kernel/machine_kexec.o] Error 1

Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Tony Luck <tony.luck@intel.com>
17 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/drzeus/mmc
Linus Torvalds [Wed, 17 Oct 2007 21:12:44 +0000 (14:12 -0700)] 
Merge branch 'for-linus' of git://git./linux/kernel/git/drzeus/mmc

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/drzeus/mmc:
  net: libertas sdio driver
  mmc: at91_mci: cleanup: use MCI_ERRORS
  mmc: possible leak in mmc_read_ext_csd

17 years agonet: libertas sdio driver
Pierre Ossman [Wed, 17 Oct 2007 20:24:24 +0000 (22:24 +0200)] 
net: libertas sdio driver

Add driver for Marvell's Libertas 8385 and 8686 wifi chips.

Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
Acked-by: Dan Williams <dcbw@redhat.com>
17 years agoMerge ssh://master.kernel.org/pub/scm/linux/kernel/git/tglx/linux-2.6-x86
Linus Torvalds [Wed, 17 Oct 2007 20:13:16 +0000 (13:13 -0700)] 
Merge ssh:///linux/kernel/git/tglx/linux-2.6-x86

* ssh://master.kernel.org/pub/scm/linux/kernel/git/tglx/linux-2.6-x86: (114 commits)
  x86: delete vsyscall files during make clean
  kbuild: fix typo SRCARCH in find_sources
  x86: fix kernel rebuild due to vsyscall fallout
  .gitignore update for x86 arch
  x86: unify include/asm/debugreg_32/64.h
  x86: unify include/asm/unwind_32/64.h
  x86: unify include/asm/types_32/64.h
  x86: unify include/asm/tlb_32/64.h
  x86: unify include/asm/siginfo_32/64.h
  x86: unify include/asm/bug_32/64.h
  x86: unify include/asm/mman_32/64.h
  x86: unify include/asm/agp_32/64.h
  x86: unify include/asm/kdebug_32/64.h
  x86: unify include/asm/ioctls_32/64.h
  x86: unify include/asm/floppy_32/64.h
  x86: apply missing DMA/OOM prevention to floppy_32.h
  x86: unify include/asm/cache_32/64.h
  x86: unify include/asm/cache_32/64.h
  x86: unify include/asm/dmi_32/64.h
  x86: unify include/asm/delay_32/64.h
  ...

17 years agox86: delete vsyscall files during make clean
Sam Ravnborg [Wed, 17 Oct 2007 20:06:30 +0000 (22:06 +0200)] 
x86: delete vsyscall files during make clean

make clean failed to delete a few files in
x86/kernel. This is because kbuild does not
see the correct/full kernel/Makefile.

As a workaround until the Makefiles are merged specify
the files to be deleted in the common Makefile.

Reported by Mike Galbraith <efault@gmx.de>

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Cc: Mike Galbraith <efault@gmx.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
17 years agokbuild: fix typo SRCARCH in find_sources
Yinghai Lu [Tue, 16 Oct 2007 07:28:06 +0000 (00:28 -0700)] 
kbuild: fix typo SRCARCH in find_sources

otherwise get the two copy file list in SRCARCH

for cscope:
C symbol: start_kernel

  File           Function            Line
0 proto.h        <global>              11 extern void start_kernel(void );
1 start_kernel.h <global>              10 extern asmlinkage void __init start_kernel(void );
2 head32.c       i386_start_kernel     37 start_kernel();
3 head32.c       i386_start_kernel     37 start_kernel();
4 head64.c       x86_64_start_kernel   85 start_kernel();
5 head64.c       x86_64_start_kernel   85 start_kernel();
6 head_32.S      options              199 cmpb $0,%cl #the first CPU calls start_kernel
7 head_32.S      options              199 cmpb $0,%cl #the first CPU calls start_kernel
8 enlighten.c    xen_start_kernel    1145 start_kernel();
9 enlighten.c    xen_start_kernel    1145 start_kernel();
a lguest.c       lguest_init         1095 start_kernel();
b main.c         start_kernel         513 asmlinkage void __init start_kernel(void )

after the patch:
C symbol: start_kernel

  File           Function            Line
0 proto.h        <global>              11 extern void start_kernel(void );
1 start_kernel.h <global>              10 extern asmlinkage void __init start_kernel(void );
2 head32.c       i386_start_kernel     37 start_kernel();
3 head64.c       x86_64_start_kernel   85 start_kernel();
4 head_32.S      options              199 cmpb $0,%cl #the first CPU calls start_kernel
5 enlighten.c    xen_start_kernel    1145 start_kernel();
6 lguest.c       lguest_init         1095 start_kernel();
7 main.c         start_kernel         513 asmlinkage void __init start_kernel(void )

Signed-off-by: Yinghai Lu <yinghai.lu@sun.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
17 years ago9p: remove sysctl
Eric Van Hensbergen [Wed, 17 Oct 2007 19:35:15 +0000 (14:35 -0500)] 
9p: remove sysctl

A sysctl method was added to enable and disable debugging levels.  After
further review, it was decided that there are better approaches to doing this
and the sysctl methodology isn't really desirable.  This patch removes the
sysctl code from 9p.

Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>
17 years agommc: at91_mci: cleanup: use MCI_ERRORS
Andrew Victor [Wed, 17 Oct 2007 09:53:40 +0000 (11:53 +0200)] 
mmc: at91_mci: cleanup: use MCI_ERRORS

A small MMC driver cleanup.

Use the defined AT91_MCI_ERRORS in at91_mci_completed_command() instead
of specifying all the error bits individually.

Signed-off-by: Andrew Victor <andrew@sanpeople.com>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
17 years agommc: possible leak in mmc_read_ext_csd
Florin Malita [Sat, 13 Oct 2007 16:27:20 +0000 (12:27 -0400)] 
mmc: possible leak in mmc_read_ext_csd

The exception path associated with an invalid ext_csd_struct returns
without freeing ext_csd.

Coverity CID 1909.

Signed-off-by: Florin Malita
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
17 years ago9p: fix bad kconfig cross-dependency
Eric Van Hensbergen [Wed, 17 Oct 2007 19:31:07 +0000 (14:31 -0500)] 
9p: fix bad kconfig cross-dependency

This patch moves transport dynamic registration and matching to the net
module to prevent a bad Kconfig dependency between the net and fs 9p modules.

Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>
17 years ago9p: soften invalidation in loose_mode
Eric Van Hensbergen [Wed, 17 Oct 2007 19:31:07 +0000 (14:31 -0500)] 
9p: soften invalidation in loose_mode

Loose mode in 9p utilizes the page cache without respecting coherency with
the server.  Any writes previously invaldiated the entire mapping for a file.
This patch softens the behavior to only invalidate the region of the actual
write.

Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>
17 years ago9p: attach-per-user
Latchesar Ionkov [Wed, 17 Oct 2007 19:31:07 +0000 (14:31 -0500)] 
9p: attach-per-user

The 9P2000 protocol requires the authentication and permission checks to be
done in the file server. For that reason every user that accesses the file
server tree has to authenticate and attach to the server separately.
Multiple users can share the same connection to the server.

Currently v9fs does a single attach and executes all I/O operations as a
single user. This makes using v9fs in multiuser environment unsafe as it
depends on the client doing the permission checking.

This patch improves the 9P2000 support by allowing every user to attach
separately. The patch defines three modes of access (new mount option
'access'):

- attach-per-user (access=user) (default mode for 9P2000.u)
 If a user tries to access a file served by v9fs for the first time, v9fs
 sends an attach command to the server (Tattach) specifying the user. If
 the attach succeeds, the user can access the v9fs tree.
 As there is no uname->uid (string->integer) mapping yet, this mode works
 only with the 9P2000.u dialect.

- allow only one user to access the tree (access=<uid>)
 Only the user with uid can access the v9fs tree. Other users that attempt
 to access it will get EPERM error.

- do all operations as a single user (access=any) (default for 9P2000)
 V9fs does a single attach and all operations are done as a single user.
 If this mode is selected, the v9fs behavior is identical with the current
 one.

Signed-off-by: Latchesar Ionkov <lucho@ionkov.net>
Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>
17 years ago9p: rename uid and gid parameters
Latchesar Ionkov [Wed, 17 Oct 2007 19:31:07 +0000 (14:31 -0500)] 
9p: rename uid and gid parameters

Change the names of 'uid' and 'gid' parameters to the more appropriate
'dfltuid' and 'dfltgid'.  This also sets the default uid/gid to -2
(aka nfsnobody)

Signed-off-by: Latchesar Ionkov <lucho@ionkov.net>
Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>
17 years ago9p: define session flags
Latchesar Ionkov [Wed, 17 Oct 2007 19:31:07 +0000 (14:31 -0500)] 
9p: define session flags

Create more general flags field in the v9fs_session_info struct and move the
'extended' flag as a bit in the flags.

Signed-off-by: Latchesar Ionkov <lucho@ionkov.net>
Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>
17 years ago9p: Make transports dynamic
Eric Van Hensbergen [Wed, 17 Oct 2007 19:31:07 +0000 (14:31 -0500)] 
9p: Make transports dynamic

This patch abstracts out the interfaces to underlying transports so that
new transports can be added as modules.  This should also allow kernel
configuration of transports without ifdef-hell.

Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>
17 years agox86: fix kernel rebuild due to vsyscall fallout
Sam Ravnborg [Wed, 17 Oct 2007 19:16:33 +0000 (21:16 +0200)] 
x86: fix kernel rebuild due to vsyscall fallout

Fix rebuild of kernel when there is no changes.
This happened for i386.
Using make V=2 hinted that the output files were
not assigned to targets - fixed by this patch.

Reported by: Boaz Harrosh <bharrosh@panasas.com>

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
17 years ago.gitignore update for x86 arch
Denis V. Lunev [Tue, 16 Oct 2007 07:22:21 +0000 (11:22 +0400)] 
.gitignore update for x86 arch

This patch:
- makes .gitignore files visible to git
- makes arch/x86/kernel/vsyscall_32.lds and arch/i386/boot invisible

Signed-off-by: Denis V. Lunev <den@openvz.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
17 years agoMerge branch 'for-linus' of git://git.kernel.dk/data/git/linux-2.6-block
Linus Torvalds [Wed, 17 Oct 2007 18:56:06 +0000 (11:56 -0700)] 
Merge branch 'for-linus' of git://git.kernel.dk/data/git/linux-2.6-block

* 'for-linus' of git://git.kernel.dk/data/git/linux-2.6-block:
  [BLOCK] blk_rq_map_sg() next_sg fixup
  Revert "[SCSI] Remove full sg table memset()"

17 years agox86: unify include/asm/debugreg_32/64.h
Thomas Gleixner [Wed, 17 Oct 2007 18:35:37 +0000 (20:35 +0200)] 
x86: unify include/asm/debugreg_32/64.h

Almost identical except for the extra DR_LEN_8 and the different
DR_CONTROL_RESERVED defines.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Conflicts:

include/asm-x86/Kbuild

17 years agox86: unify include/asm/unwind_32/64.h
Thomas Gleixner [Mon, 15 Oct 2007 21:28:21 +0000 (23:28 +0200)] 
x86: unify include/asm/unwind_32/64.h

32bit has an extra UNW_FP define, which does not hurt.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
17 years agox86: unify include/asm/types_32/64.h
Thomas Gleixner [Wed, 17 Oct 2007 18:32:07 +0000 (20:32 +0200)] 
x86: unify include/asm/types_32/64.h

Mostly the same. Make the few exceptions conditional.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Conflicts:

include/asm-x86/types_32.h

17 years agox86: unify include/asm/tlb_32/64.h
Thomas Gleixner [Mon, 15 Oct 2007 21:28:21 +0000 (23:28 +0200)] 
x86: unify include/asm/tlb_32/64.h

Same file, except for whitespace, comment formatting.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
17 years agox86: unify include/asm/siginfo_32/64.h
Thomas Gleixner [Mon, 15 Oct 2007 21:28:21 +0000 (23:28 +0200)] 
x86: unify include/asm/siginfo_32/64.h

Same file, except for the 64bit PREAMBLE_SIZE define.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
17 years agox86: unify include/asm/bug_32/64.h
Thomas Gleixner [Wed, 17 Oct 2007 15:19:30 +0000 (17:19 +0200)] 
x86: unify include/asm/bug_32/64.h

Same file, except for whitespace, comment formatting and the
.long/.quad delta which can be solved by a define.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
17 years agox86: unify include/asm/mman_32/64.h
Thomas Gleixner [Mon, 15 Oct 2007 21:28:21 +0000 (23:28 +0200)] 
x86: unify include/asm/mman_32/64.h

Same file, except for the extra 64bit MAP_32BIT define, which does not hurt
for 32 bit compiles.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
17 years agox86: unify include/asm/agp_32/64.h
Thomas Gleixner [Mon, 15 Oct 2007 21:28:20 +0000 (23:28 +0200)] 
x86: unify include/asm/agp_32/64.h

The 32bit D(n) debug addon can be made exclusive for 32 bit compiles.
Otherwise all the same.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
17 years agox86: unify include/asm/kdebug_32/64.h
Thomas Gleixner [Mon, 15 Oct 2007 21:28:20 +0000 (23:28 +0200)] 
x86: unify include/asm/kdebug_32/64.h

The 64 bit variant has additional function prototypes which do no harm
for 32 bit.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
17 years agox86: unify include/asm/ioctls_32/64.h
Thomas Gleixner [Mon, 15 Oct 2007 21:28:20 +0000 (23:28 +0200)] 
x86: unify include/asm/ioctls_32/64.h

Same file, except for whitespace and comment formatting.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
17 years agox86: unify include/asm/floppy_32/64.h
Thomas Gleixner [Wed, 17 Oct 2007 18:24:56 +0000 (20:24 +0200)] 
x86: unify include/asm/floppy_32/64.h

Same file, except for whitespace, comment formatting and:

32-bit: if((unsigned int) addr >= (unsigned int) high_memory)
64-bit: if((unsigned long) addr >= (unsigned long) high_memory)

where the latter can be used safely for both.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Conflicts:
include/asm-x86/floppy_32.h
include/asm-x86/floppy_64.h

17 years agox86: apply missing DMA/OOM prevention to floppy_32.h
Thomas Gleixner [Mon, 15 Oct 2007 21:28:20 +0000 (23:28 +0200)] 
x86: apply missing DMA/OOM prevention to floppy_32.h

commit 554d284ba90bc2306c31e5363789f05c320969c3 added _GPF_NORETRY
to floppy_64.h to prevent OOM killer on floppy DMA allocations.

Apply the same to the 32 bit variant.

Found during the attempt to unify the _32/_64 variants. Seperate commit
to document the resulting code change.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
17 years agox86: unify include/asm/cache_32/64.h
Thomas Gleixner [Mon, 15 Oct 2007 21:28:20 +0000 (23:28 +0200)] 
x86: unify include/asm/cache_32/64.h

Same file, except for whitespace, comment formatting and the two variants
of fb_is_primary_device()

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
17 years agox86: unify include/asm/cache_32/64.h
Thomas Gleixner [Mon, 15 Oct 2007 21:28:20 +0000 (23:28 +0200)] 
x86: unify include/asm/cache_32/64.h

Same file, except for whitespace, comment formatting and:

32-bit: unsigned long *virt_addr = va;
64-bit: unsigned int *virt_addr = va;

Both can be safely replaced by:
u32 i, *virt_addr = va;

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
17 years agox86: unify include/asm/dmi_32/64.h
Thomas Gleixner [Mon, 15 Oct 2007 21:28:20 +0000 (23:28 +0200)] 
x86: unify include/asm/dmi_32/64.h

Unification, so we have these things in one file.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
17 years agox86: unify include/asm/delay_32/64.h
Thomas Gleixner [Mon, 15 Oct 2007 21:28:20 +0000 (23:28 +0200)] 
x86: unify include/asm/delay_32/64.h

Same file, except for whitespace, comment formatting and the extra
function prototype usc_tsc_delay() in _32.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
17 years agox86: unify include/asm/cache_32/64.h
Thomas Gleixner [Mon, 15 Oct 2007 21:28:20 +0000 (23:28 +0200)] 
x86: unify include/asm/cache_32/64.h

Same file, except for whitespace, comment formatting and the extra
defines in _64, which are conditional on VSMP anyway.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
17 years agox86: unify include/asm/cacheflush_32/64.h
Thomas Gleixner [Mon, 15 Oct 2007 21:28:20 +0000 (23:28 +0200)] 
x86: unify include/asm/cacheflush_32/64.h

Same file, except for whitespace, comment formatting and the extra
DEBUG_PAGE_ALLOC function in _32.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
17 years agox86: unify include/asm/auxvec_32/64.h
Thomas Gleixner [Mon, 15 Oct 2007 21:28:19 +0000 (23:28 +0200)] 
x86: unify include/asm/auxvec_32/64.h

Same file, except for whitespace, comment formatting and the
AT_SYSINFO define for 32bit

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
17 years agox86: unify include/asm/agp_32/64.h
Thomas Gleixner [Mon, 15 Oct 2007 21:28:19 +0000 (23:28 +0200)] 
x86: unify include/asm/agp_32/64.h

Same file, except for whitespace, comment formatting and the
usage of wbinvd() instead of asm volatile("wbinvd":::"memory"), which is
the same.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
17 years agox86: unify some more trivial include/asm-x86/ 32/64 variants
Thomas Gleixner [Mon, 15 Oct 2007 11:57:47 +0000 (13:57 +0200)] 
x86: unify some more trivial include/asm-x86/ 32/64 variants

Scripted unification.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
17 years agox86: merge some trivially mergeable headers
Roland Dreier [Mon, 15 Oct 2007 11:57:46 +0000 (13:57 +0200)] 
x86: merge some trivially mergeable headers

Merge errno.h, resource.h, rtc.h, sections.h, serial.h and sockios.h,
where i386 and x86_64 have no or only trivial comment/include guard
differences.

Build tested on both 32-bit and 64-bit, and booted on 64-bit.

[tglx: fixup Kbuild as well]

Signed-off-by: Roland Dreier <roland@digitalvampire.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
17 years agox86: trivial header merges
Brian Gerst [Mon, 15 Oct 2007 11:57:46 +0000 (13:57 +0200)] 
x86: trivial header merges

Merge 32/64-bit headers that simply redirect to asm-generic

[tglx: fixup Kbuild as well]

Signed-off-by: Brian Gerst <bgerst@didntduck.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
17 years agox86: vdso linker script cleanup
Roland McGrath [Wed, 17 Oct 2007 16:04:41 +0000 (18:04 +0200)] 
x86: vdso linker script cleanup

I can't see the reason ".  = VDSO_PRELINK + 0x900;" was ever there in
the linker script for the x86_64 vDSO.  I can't find anything that
depends on this magic offset, or that should care at all about the
particular location of of the .data section (all from vvar.c) in the
vDSO image.  If it is really desireable to place .data at 0x900, then it
should be after all the other sections so they fill in the space up to
0x900.

This removes the 0x900 magic and cleans up the output sections generally
in the vDSO linker script.  This saves a few hundred bytes in the size
of the vDSO file, bringing it back well under 4kb total so that its vma
only needs one page.

Signed-off-by: Roland McGrath <roland@redhat.com>
Cc: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
17 years agox86: convert mm_context_t semaphore to a mutex
Luiz Fernando N. Capitulino [Wed, 17 Oct 2007 16:04:41 +0000 (18:04 +0200)] 
x86: convert mm_context_t semaphore to a mutex

convert mm_context_t semaphore to a mutex.

Signed-off-by: Luiz Fernando N. Capitulino <lcapitulino@mandriva.com.br>
Cc: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
17 years agox86: multi-byte single instruction NOPs
Jan Beulich [Wed, 17 Oct 2007 16:04:41 +0000 (18:04 +0200)] 
x86: multi-byte single instruction NOPs

Add support for and use the multi-byte NOPs recently documented to be
available on all PentiumPro and later processors.

This patch only applies cleanly on top of the "x86: misc.
constifications" patch sent earlier.

[ tglx: arch/x86 adaptation ]

Signed-off-by: Jan Beulich <jbeulich@novell.com>
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
 arch/x86/kernel/alternative.c  |   23 ++++++++++++++++++++++-
 include/asm-x86/processor_32.h |   22 ++++++++++++++++++++++
 include/asm-x86/processor_64.h |   22 ++++++++++++++++++++++
 3 files changed, 66 insertions(+), 1 deletion(-)

17 years agox86: remove duplicated vsyscall nsec update
Andi Kleen [Wed, 17 Oct 2007 16:04:41 +0000 (18:04 +0200)] 
x86: remove duplicated vsyscall nsec update

Spotted by Chuck Ebbert

[ tglx: arch/x86 adaptation ]

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
17 years agoi386: remove unnecessary code
Ingo Molnar [Wed, 17 Oct 2007 16:04:41 +0000 (18:04 +0200)] 
i386: remove unnecessary code

Oleg Nesterov pointed out that the set_fs() calls in setup_frame()
and setup_rt_frame() were superfluous.

[ tglx: arch/x86 adaptation ]

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andi Kleen <ak@suse.de>
Cc: Oleg Nesterov <oleg@tv-sign.ru>
Cc: Chuck Ebbert <76306.1226@compuserve.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
17 years agox86: convert mm_context_t semaphore to a mutex
Luiz Fernando N. Capitulino [Wed, 17 Oct 2007 16:04:41 +0000 (18:04 +0200)] 
x86: convert mm_context_t semaphore to a mutex

[ tglx: arch/x86 adaptation ]

Signed-off-by: Luiz Fernando N. Capitulino <lcapitulino@mandriva.com.br>
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
17 years agox86: Use string instruction memcpy on AMD Fam11h
Andi Kleen [Wed, 17 Oct 2007 16:04:41 +0000 (18:04 +0200)] 
x86: Use string instruction memcpy on AMD Fam11h

[ tglx: arch/x86 adaptation ]

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
17 years agox86: make io_apic not connected pin print complete
Yinghai Lu [Wed, 17 Oct 2007 16:04:41 +0000 (18:04 +0200)] 
x86: make io_apic not connected pin print complete

Normally we will have two segment not connected pin pin0, and pin after
15...

So we need to print out "not connected\n" for previous segment, before
printing out connected pins info...

Signed-off-by: Yinghai Lu <yinghai.lu@sun.com>
Cc: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
17 years agoi386: print better early fault info
Ingo Molnar [Wed, 17 Oct 2007 16:04:41 +0000 (18:04 +0200)] 
i386: print better early fault info

improve early fault output.

old format:

 Int 14: CR2 010001e3  err 00000002  EIP c011f2f9  CS 00000060  flags 00010046
 Stack: c073695e c0791c10 00000000 ffffffff 00000000 01000000 00001000 c0791c10

new format:

 BUG: Int 14: CR2 010001e3
      EDI c1000000  ESI c0693c10  EBP c0637f9c  ESP c0637f08
      EBX 00000000  EDX 0000000e  ECX 00000000  EAX 010001e3
      err 00000002  EIP c0123119   CS 00000060  flg 00010046
 Stack: c064d589 c0693000 00000000 c0637f60 00c001e3 01000000 00038000 00000163
        00000000 00000163 00000000 ffffffff 00038000 00000000 00000000 00001000
        00001000 00000000 c0637f88 c06509be c0a2ae60 00001000 00001000 00000000

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
17 years agox86: also show non-zero IRQ counts for vectors that currently don't have a handler
Jan Beulich [Wed, 17 Oct 2007 16:04:40 +0000 (18:04 +0200)] 
x86: also show non-zero IRQ counts for vectors that currently don't have a handler

It doesn't seem to make sense to hide these, even if their counts
can't change at the point in time they're being displayed.

[ tglx: arch/x86 adaptation ]

Signed-off-by: Jan Beulich <jbeulich@novell.com>
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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