13 Jun, 2008
1 commit
-
This can result in an empty topology directory in sysfs, and requires
in-kernel users to protect all uses with #ifdef - see
.The documentation of CPU topology specifies what the defaults should be if
only partial information is available from the hardware. So we can
provide these defaults as a fallback.This patch:
- Adds default definitions of the 4 topology macros to
- Changes drivers/base/topology.c to use the topology macros unconditionally
and to cope with definitions that aren't lvalues
- Updates documentation accordingly[ From: Andrew Morton
- fold now-duplicated code
- fix layout
]Signed-off-by: Ben Hutchings
Cc: Vegard Nossum
Cc: Nick Piggin
Cc: Chandra Seetharaman
Cc: Suresh Siddha
Cc: Mike Travis
Cc: Christoph Lameter
Cc: John Hawkes
Cc: Zhang, Yanmin
Signed-off-by: Andrew Morton
Signed-off-by: Ingo Molnar
07 Jun, 2008
39 commits
-
use_mm() was changed to use switch_mm() instead of activate_mm(), since
then nobody calls (and nobody should call) activate_mm() with
PF_BORROWED_MM bit set.As Jeff Dike pointed out, we can also remove the "old != new" check, it is
always true.Signed-off-by: Oleg Nesterov
Cc: Jeff Dike
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband:
IB/ipath: Fix SM trap forwarding
IB/ehca: Reject send WRs only for RESET, INIT and RTR state
MAINTAINERS: Update NetEffect (iw_nes) entry
IB/ipath: Fix device capability flags
IB/ipath: Avoid test_bit() on u64 SDMA status value -
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6:
x86/PCI: add workaround for bug in ASUS A7V600 BIOS (rev 1005)
PCI/x86: fix up PCI stuff so that PCI_GOANY supports OLPC -
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6:
sound: emu10k1 - fix system hang with Audigy2 ZS Notebook PCMCIA card -
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/chrisw/lsm-2.6:
capabilities: remain source compatible with 32-bit raw legacy capability support.
LSM: remove stale web site from MAINTAINERS -
* git://git.infradead.org/~dwmw2/mtd-2.6.26:
[MTD] m25p80.c mutex unlock fix -
Packet sending is driven by two flags, tx_ready and tx_queued.
It was possible, that there were queued data for sending and
hardware was flagged as blocked but in fact it was not.The tx_queued was indicator but should be really a counter else
first fragmented packet resets tx_queued flag, but there may be
pending packets which do not get sent.New semantics:
tx_ready - set, if hw is ready to send packet, no packet is being
transferred right now
set the flag right at the place where data are copied
into hw memory and not earlier without checking if it
was succesful
tx_queued - count of enqueued packets, including fragmentsTested-by: Michal Rokos
Signed-off-by: David Sterba
Signed-off-by: Jiri Kosina
Signed-off-by: Linus Torvalds -
To get zeroed out memory from a particular NUMA node. To be used by
sunrpc.Signed-off-by: Jeff Layton
Cc: Christoph Lameter
Cc: Pekka Enberg
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Just a quick explanation of the pagemap interface from a userspace point
of view, and an example of how to use it (in English, not code).Signed-off-by: Thomas Tuttle
Cc: Matt Mackall
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
If the user tries to read from a position that is not a multiple of 8, or
read a number of bytes that is not a multiple of 8, they have passed an
invalid argument to read, for the purpose of reading these files. It's
not an IO error because we didn't encounter any trouble finding the data
they asked for.Signed-off-by: Thomas Tuttle
Cc: Matt Mackall
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Since pagemap is all about examining pages mapped into processes' memory
spaces, it makes sense for kpagecount to return the map counts, not the
reference counts.Signed-off-by: Thomas Tuttle
Cc: Matt Mackall
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Adds DMI system identifier for ThinkPad T61.
Originally written by Klaus S. Madsen.
Taken from http://launchpadlibrarian.net/10864950/hdaps-t61.patch
Signed-off-by: Tim Gardner
Signed-off-by: maximilian attems
Cc: Klaus S. Madsen
Cc: Mark M. Hoffman
Cc: Jean Delvare
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
This patch:
commit e9720acd728a46cb40daa52c99a979f7c4ff195c
Author: Pavel Emelyanov
Date: Fri Mar 7 11:08:40 2008 -0800[NET]: Make /proc/net a symlink on /proc/self/net (v3)
introduced a /proc/self/net directory without bumping the corresponding
link count for /proc/self.This patch replaces the static link count initializations with a call that
counts the number of directory entries in the given pid_entry table
whenever it is instantiated, and thus relieves the burden of manually
keeping the two in sync.[akpm@linux-foundation.org: cleanup]
Acked-by: Eric W. Biederman
Cc: Pavel Emelyanov
Signed-off-by: Vegard Nossum
Cc: "David S. Miller"
Cc: Alexey Dobriyan
Cc:
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
This hooks up the platform-specific [gs]et_rtc_time functions so that
kernels using CONFIG_RTC_CLASS have RTC support on most PowerPC platforms.A new driver, and one which we've been shipping in Fedora for a while
already, since otherwise RTC support breaks.[akpm@linux-foundation.org: fix Kconfig indenting]
Signed-off-by: David Woodhouse
Signed-off-by: Paul Mackerras
Acked-by: Alessandro Zummo
Acked-by: David Brownell
Cc: Benjamin Herrenschmidt
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
This patch fixes the following compile error caused by
commit 4016a1390d07f15b267eecb20e76a48fd5c524ef
(mm/nommu.c: return 0 from kobjsize with invalid objects):/home/bunk/linux/kernel-2.6/git/linux-2.6/mm/nommu.c: In function 'kobjsize':
/home/bunk/linux/kernel-2.6/git/linux-2.6/mm/nommu.c:112: error: 'memory_end' undeclared (first use in this function)
/home/bunk/linux/kernel-2.6/git/linux-2.6/mm/nommu.c:112: error: (Each undeclared identifier is reported only once
/home/bunk/linux/kernel-2.6/git/linux-2.6/mm/nommu.c:112: error: for each function it appears in.)The patch also removes now no longer required memory_{start,end}
declarations inside access_ok().Reported-by: Adrian Bunk
Signed-off-by: Adrian Bunk
Cc: Hirokazu Takata
Cc: Michael Hennerich
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
There is a bug when we are trying to verify that the reserve inode's
double indirect blocks point back to the primary gdt blocks. The fix is
obvious, we need to mod the gdb count by the addr's per block. You can
verify this with the following test casedd if=/dev/zero of=disk1 seek=1024 count=1 bs=100M
losetup /dev/loop1 disk1
pvcreate /dev/loop1
vgcreate loopvg1 /dev/loop1
lvcreate -l 100%VG loopvg1 -n looplv1
mkfs.ext3 -J size=64 -b 1024 /dev/loopvg1/looplv1
mount /dev/loopvg1/looplv1 /mnt/loop
dd if=/dev/zero of=disk2 seek=1024 count=1 bs=50M
losetup /dev/loop2 disk2
pvcreate /dev/loop2
vgextend loopvg1 /dev/loop2
lvextend -l 100%VG /dev/loopvg1/looplv1
resize2fs /dev/loopvg1/looplv1without this patch the resize2fs fails, with it the resize2fs succeeds.
Signed-off-by: Josef Bacik
Acked-by: Andreas Dilger
Cc:
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
The nommu binfmt code uses ksize() for pointers returned from do_mmap()
which is wrong. This converts the call-sites to use the nommu specific
kobjsize() function which works as expected.Cc: Christoph Lameter
Cc: Matt Mackall
Acked-by: Paul Mundt
Acked-by: David Howells
Signed-off-by: Pekka Enberg
Acked-by: Greg Ungerer
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Provide documentation of the kernel-doc documentation conventions oriented
to kernel hackers.Since I figure that there will be more people reading this
kernel-doc-nano-HOWTO.txt file who are kernel developers focused on the
rest of the kernel, than there will be readers of this file who are
documentation developers extracting that embedded kernel-doc
documentation, I have taken the liberty of making the new section added
here:How to format kernel-doc comments
the first section of the kernel-doc-nano-HOWTO.txt file.
This first section is intended to introduce, motivate and provide basic
usage of the kernel-doc mechanism for kernel hackers developing other
portions of the kernel.Signed-off-by: Paul Jackson
Acked-by: Randy Dunlap
Cc: Alan Cox
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Frame buffer and mode setting drivers can be built as modules,
so fb_mode_option needs to be exported to support these.Prevents this error:
ERROR: "fb_mode_option" [drivers/ps3/ps3av_mod.ko] undefined!
Signed-off-by: Geoff Levand
Acked-by: Geert Uytterhoeven
Cc: Krzysztof Helt
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Signed-off-by: Alan Cox
Cc: Edward Shishkin
Cc: Jeff Mahoney
Cc: Chris Mason
Cc: Jan Kara
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Signed-off-by: Vegard Nossum
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Signed-off-by: Vegard Nossum
Cc: Yoshinori Sato
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
I made a change to u-boot that used the FP (Fractional Part) field of BRGR
to achieve more accurate baud rate generation. Unfortunately, the
atmel_serial driver looks at the whole BRGR register when trying to detect
the baud rate that the port is currently running at, so setting FP to a
nonzero value breaks the baud rate detection.I'll sit on the u-boot patch for a while longer, but this is clearly a
bug in the atmel_serial driver which should be fixed.Signed-off-by: Haavard Skinnemoen
Acked-by: Andrew Victor
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Lockdep says we can't take tasklist lock or sighand lock inside ctrl_lock.
Signed-off-by: Nick Piggin
Acked-by: Alan Cox
Cc: Oleg Nesterov
Cc: "Eric W. Biederman"
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
When posting:
[PATCH 1/8] Scaling msgmni to the amount of lowmem
(see http://lkml.org/lkml/2008/2/11/171), I have added a KERN_INFO message
that is output each time msgmni is recomputed.In http://lkml.org/lkml/2008/4/29/575 Tony Luck complained that this
message references an ipc namespace address that is useless.I first thought of using an audit_log instead of a printk, as suggested by
Serge Hallyn. But unfortunately, we do not have any other information
than the namespace address to provide here too. So I chose to move the
message and output it only at boot time, removing the reference to the
namespace.Signed-off-by: Nadia Derbey
Cc: Pierre Peiffer
Cc: Manfred Spraul
Acked-by: Tony Luck
Cc: "Serge E. Hallyn"
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
When posting:
[PATCH 1/8] Scaling msgmni to the amount of lowmem
(see http://article.gmane.org/gmane.linux.kernel/637849/) I changed the
MSGPOOL value to make it fit what is said in the man pages (i.e. a size
in bytes).But Michael Kerrisk rightly complained that this change could affect the
ABI. So I'm posting this patch to make MSGPOOL expressed back in Kbytes.
Michael, on his side, has fixed the man page.Signed-off-by: Nadia Derbey
Cc: Pierre Peiffer
Cc: Manfred Spraul
Acked-by: Michael Kerrisk
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Original report: """I used to force my console to black-on-white by the
command `setterm -inversescreen on`. In 2.6.26-rc4, I get lots of black
background characters."""Another addendum to commit c9e587ab. This was previously missed out since
I was not aware of what vc_decscnm was for.Signed-off-by: Jan Engelhardt
Reported-by:
Tested-by:
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
If cpu specific cpufreq driver(i.e. longrun) has "setpolicy" function,
governor object isn't set into cpufreq_policy object at "__cpufreq_set_policy"
function in driver/cpufreq/cpufreq.c .This causes a null object access at "store_scaling_setspeed" and
"show_scaling_setspeed" function in driver/cpufreq/cpufreq.c when reading or
writing through /sys interface (ex. cat
/sys/devices/system/cpu/cpu0/cpufreq/scaling_setspeed)Addresses:
http://bugzilla.kernel.org/show_bug.cgi?id=10654
https://bugzilla.redhat.com/show_bug.cgi?id=443354Signed-off-by: CHIKAMA Masaki
Cc: Dave Jones
Cc: Chuck Ebbert
Acked-by: Dominik Brodowski
Cc:
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
The interlaced and double line mode bits should not be copied to new
console when the console is switched. Otherwise, the new console may be
set to incorrect refresh rate.Also, the x and y offsets does not need to be copied.
Signed-off-by: Krzysztof Helt
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
This semaphore doesn't appear to be used, so remove it.
Signed-off-by: Daniel Walker
Cc: David Howells
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Adding a nonexistent cpu to a cpuset will be omitted quietly. It should
return -EINVAL.Example: (real_nr_cpus < NR_CPUS or cpu#4 was just offline)
# cat cpus
0-1
# /bin/echo 4 > cpus
# /bin/echo $?
0
# cat cpus#
The same occurs when add a nonexistent mem.
This patch will fix this bug.
And when *buf == "", the check is unneeded.Signed-off-by: Lai Jiangshan
Acked-by: Paul Jackson
Cc: David Rientjes
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Fix a bug in add_to_pagemap. Previously, since pm->out was a char *,
put_user was only copying 1 byte of every PFN, resulting in the top 7
bytes of each PFN not being copied. By requiring that reads be a multiple
of 8 bytes, I can make pm->out and pm->end u64*s instead of char*s, which
makes put_user work properly, and also simplifies the logic in
add_to_pagemap a bit.[akpm@linux-foundation.org: coding-style fixes]
Signed-off-by: Thomas Tuttle
Cc: Matt Mackall
Cc:
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Consider you added a 'c foo:bar r' permission to some cgroup and then (a
bit later) 'c'foo:bar w' for it. After this you'll see thec foo:bar r
c foo:bar wlines in a devices.list file.
Another example - consider you added 10 'c foo:bar r' permissions to some
cgroup (e.g. by mistake). After this you'll see 10 c foo:bar r lines in
a list file.This is weird. This situation also has one more annoying consequence.
Having many items in a white list makes permissions checking slower, sine
it has to walk a longer list.The proposal is to merge permissions for items, that correspond to the
same device.Signed-off-by: Pavel Emelyanov
Acked-by: Serge Hallyn
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Currently even if a task sits in an all-denied cgroup it can still mount
any block device in any mode it wants.Put a proper check in do_open for block device to prevent this.
Signed-off-by: Pavel Emelyanov
Acked-by: Serge Hallyn
Tested-by: Serge Hallyn
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Two functions, that need to get a device_cgroup from a task (they are
devcgroup_inode_permission and devcgroup_inode_mknod) make it in a strange
way:They get a css_set from task, then a subsys_state from css_set, then a
cgroup from the state and then a subsys_state again from the cgroup.
Besides, the devices_subsys_id is read from memory, whilst there's a
enum-ed constant for it.Optimize this part a bit:
1. Get the subsys_stats form the task and be done - no 2 extra
dereferences,
2. Use the device_subsys_id constant, not the value from memory
(i.e. one less dereference).Found while preparing 2.6.26 OpenVZ port.
Signed-off-by: Pavel Emelyanov
Acked-by: Serge Hallyn
Acked-by: Paul Menage
Cc: Balbir Singh
Cc: James Morris
Cc: Chris Wright
Cc: Stephen Smalley
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
This is just picking the container_of out of cgroup_to_devcgroup into a
separate function.This new css_to_devcgroup will be used in the 2nd patch.
Signed-off-by: Pavel Emelyanov
Acked-by: Serge Hallyn
Cc: Paul Menage
Cc: Balbir Singh
Cc: James Morris
Cc: Chris Wright
Cc: Stephen Smalley
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
This patch introduces memory_read_from_buffer().
The only difference between memory_read_from_buffer() and
simple_read_from_buffer() is which address space the function copies to.simple_read_from_buffer copies to user space memory.
memory_read_from_buffer copies to normal memory.Signed-off-by: Akinobu Mita
Cc: Al Viro
Cc: Doug Warzecha
Cc: Zhang Rui
Cc: Matt Domsch
Cc: Abhay Salunke
Cc: Greg Kroah-Hartman
Cc: Markus Rechberger
Cc: Kay Sievers
Cc: Bob Moore
Cc: Thomas Renninger
Cc: Len Brown
Cc: Benjamin Herrenschmidt
Cc: "Antonino A. Daplas"
Cc: Krzysztof Helt
Cc: Geert Uytterhoeven
Cc: Martin Schwidefsky
Cc: Heiko Carstens
Cc: Peter Oberparleiter
Cc: Michael Holzheu
Cc: Brian King
Cc: James E.J. Bottomley
Cc: Andrew Vasquez
Cc: Seokmann Ju
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Bluetooth will be able to use this.
Signed-off-by: Harvey Harrison
Cc: Marcel Holtmann
Cc: Dave Young
Cc: Akinobu Mita
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Change the name of the device from "rtc-ds1374" to just "ds1374", to match
what all other RTC drivers do. I seem to remember that this name was
chosen to avoid possible confusion with an older ds1374 driver, but that
driver was removed 3 months ago.Signed-off-by: Jean Delvare
Signed-off-by: Alessandro Zummo
Acked-by: Kumar Gala
Cc: Paul Mackerras
Cc: Benjamin Herrenschmidt
Cc: David Brownell
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
