12 Oct, 2007
2 commits
-
arch/s390/Kconfig tells us that CONFIG_APPLDATA_BASE is bool and hence can
never be built modular. Given this, defining appldata_exit() function is
pointless (and wasteful, actually). Remove all that.Previous patch annotated appldata_offline_cpu() as __cpuexit, but now with the
__exit function appldata_exit() gone, the only callsite that references it is
__cpuinit, so this function can also be __cpuinit, thereby saving space when
HOTPLUG_CPU=n.Signed-off-by: Satyam Sharma
Cc: Heiko Carstens
Signed-off-by: Andrew Morton
Signed-off-by: Martin Schwidefsky -
appldata_offline_cpu() is only called from __cpuinit-marked hotplug
notifier callback and from the __exit-marked module_exit function,
therefore candidate for __cpuexit.BTW the __exit module_exit function appldata_exit() of this driver fails to
unregister_hotcpu_notifier() the notifier_block that was registered by
appldata_init() during module startup. This will lead to oops if hotplug
notification comes after module has been unloaded. Let's fix this by
unregistering the notifier appropriately (before appldata_offline_cpu()'ing
the CPUs).Signed-off-by: Satyam Sharma
Cc: Heiko Carstens
Signed-off-by: Andrew Morton
Signed-off-by: Martin Schwidefsky
11 Oct, 2007
1 commit
-
This patch makes most of the generic device layer network
namespace safe. This patch makes dev_base_head a
network namespace variable, and then it picks up
a few associated variables. The functions:
dev_getbyhwaddr
dev_getfirsthwbytype
dev_get_by_flags
dev_get_by_name
__dev_get_by_name
dev_get_by_index
__dev_get_by_index
dev_ioctl
dev_ethtool
dev_load
wireless_process_ioctlwere modified to take a network namespace argument, and
deal with it.vlan_ioctl_set and brioctl_set were modified so their
hooks will receive a network namespace argument.So basically anthing in the core of the network stack that was
affected to by the change of dev_base was modified to handle
multiple network namespaces. The rest of the network stack was
simply modified to explicitly use &init_net the initial network
namespace. This can be fixed when those components of the network
stack are modified to handle multiple network namespaces.For now the ifindex generator is left global.
Fundametally ifindex numbers are per namespace, or else
we will have corner case problems with migration when
we get that far.At the same time there are assumptions in the network stack
that the ifindex of a network device won't change. Making
the ifindex number global seems a good compromise until
the network stack can cope with ifindex changes when
you change namespaces, and the like.Signed-off-by: Eric W. Biederman
Signed-off-by: David S. Miller
27 Jul, 2007
1 commit
-
smp_call_function_single now has the same semantics as s390's
smp_call_function_on. Therefore convert to the *single variant
and get rid of some architecture specific code.Signed-off-by: Heiko Carstens
Signed-off-by: Martin Schwidefsky
19 Jun, 2007
1 commit
-
WARNING: arch/s390/kernel/built-in.o(.text+0xb92a):
Section mismatch: reference to .init.text:start_secondary
(between 'restart_addr' and 'stack_overflow')
WARNING: arch/s390/appldata/built-in.o(.data+0xdc):
Section mismatch: reference to .init.text:
(between 'appldata_nb' and 'appldata_timer_lock')Signed-off-by: Heiko Carstens
Signed-off-by: Martin Schwidefsky
10 May, 2007
1 commit
-
Since nonboot CPUs are now disabled after tasks and devices have been
frozen and the CPU hotplug infrastructure is used for this purpose, we need
special CPU hotplug notifications that will help the CPU-hotplug-aware
subsystems distinguish normal CPU hotplug events from CPU hotplug events
related to a system-wide suspend or resume operation in progress. This
patch introduces such notifications and causes them to be used during
suspend and resume transitions. It also changes all of the
CPU-hotplug-aware subsystems to take these notifications into consideration
(for now they are handled in the same way as the corresponding "normal"
ones).[oleg@tv-sign.ru: cleanups]
Signed-off-by: Rafael J. Wysocki
Cc: Gautham R Shenoy
Cc: Pavel Machek
Signed-off-by: Oleg Nesterov
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
04 May, 2007
1 commit
-
Cleanup of dev_base list use, with the aim to simplify making device
list per-namespace. In almost every occasion, use of dev_base variable
and dev->next pointer could be easily replaced by for_each_netdev
loop. A few most complicated places were converted to using
first_netdev()/next_netdev().Signed-off-by: Pavel Emelianov
Acked-by: Kirill Korotaev
Signed-off-by: David S. Miller
29 Apr, 2007
1 commit
-
Herbert Xu conviced me that a new flag was overkill; every driver
currently overrides get_stats, so we might as well make the internal
one the default. If someone did fail to set get_stats, they would now
get all 0 stats instead of "No statistics available".Signed-off-by: Rusty Russell
Acked-by: Herbert Xu
Signed-off-by: David S. Miller
28 Apr, 2007
1 commit
-
* master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6: (448 commits)
[IPV4] nl_fib_lookup: Initialise res.r before fib_res_put(&res)
[IPV6]: Fix thinko in ipv6_rthdr_rcv() changes.
[IPV4]: Add multipath cached to feature-removal-schedule.txt
[WIRELESS] cfg80211: Clarify locking comment.
[WIRELESS] cfg80211: Fix locking in wiphy_new.
[WEXT] net_device: Don't include wext bits if not required.
[WEXT]: Misc code cleanups.
[WEXT]: Reduce inline abuse.
[WEXT]: Move EXPORT_SYMBOL statements where they belong.
[WEXT]: Cleanup early ioctl call path.
[WEXT]: Remove options.
[WEXT]: Remove dead debug code.
[WEXT]: Clean up how wext is called.
[WEXT]: Move to net/wireless
[AFS]: Eliminate cmpxchg() usage in vlocation code.
[RXRPC]: Fix pointers passed to bitops.
[RXRPC]: Remove bogus atomic_* overrides.
[AFS]: Fix u64 printing in debug logging.
[AFS]: Add "directory write" support.
[AFS]: Implement the CB.InitCallBackState3 operation.
...
27 Apr, 2007
1 commit
-
arch/s390/appldata/appldata_base.c has some confusing debugging code left
over to allow compiling it as a module. In practice, it cannot be configured
as module and there is no need to keep that code.Signed-off-by: Gerald Schaefer
Signed-off-by: Martin Schwidefsky
26 Apr, 2007
1 commit
-
Network drivers which keep stats allocate their own stats structure
then write a get_stats() function to return them. It would be nice if
this were done by default.1) Add a new "stats" field to "struct net_device".
2) Add a new feature field to say "this driver uses the internal one"
3) Have a default "get_stats" which returns NULL if that feature not set.
4) Change callers to check result of get_stats call for NULL, not if
->get_stats is set.This should not break backwards compatibility with older drivers, yet
allow modern drivers to shed some boilerplate code.Lightly tested: works for a modified lguest network driver.
Signed-off-by: Rusty Russell
Signed-off-by: David S. Miller
15 Mar, 2007
1 commit
-
PGALLOC_DMA is defined only if we have CONFIG_ZONE_DMA
Signed-off-by: Al Viro
Signed-off-by: Linus Torvalds
15 Feb, 2007
3 commits
-
The semantic effect of insert_at_head is that it would allow new registered
sysctl entries to override existing sysctl entries of the same name. Which is
pain for caching and the proc interface never implemented.I have done an audit and discovered that none of the current users of
register_sysctl care as (excpet for directories) they do not register
duplicate sysctl entries.So this patch simply removes the support for overriding existing entries in
the sys_sysctl interface since no one uses it or cares and it makes future
enhancments harder.Signed-off-by: Eric W. Biederman
Acked-by: Ralf Baechle
Acked-by: Martin Schwidefsky
Cc: Russell King
Cc: David Howells
Cc: "Luck, Tony"
Cc: Ralf Baechle
Cc: Paul Mackerras
Cc: Martin Schwidefsky
Cc: Andi Kleen
Cc: Jens Axboe
Cc: Corey Minyard
Cc: Neil Brown
Cc: "John W. Linville"
Cc: James Bottomley
Cc: Jan Kara
Cc: Trond Myklebust
Cc: Mark Fasheh
Cc: David Chinner
Cc: "David S. Miller"
Cc: Patrick McHardy
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Signed-off-by: Eric W. Biederman
Acked-by: Martin Schwidefsky
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
We need to have the the definition of all top level sysctl directories
registers in sysctl.h so we don't conflict by accident and cause abi problems.Signed-off-by: Eric W. Biederman
Acked-by: Martin Schwidefsky
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
06 Feb, 2007
1 commit
-
Signed-off-by: Heiko Carstens
Signed-off-by: Martin Schwidefsky
08 Dec, 2006
1 commit
-
There was lots of #ifdef noise in the kernel due to hotcpu_notifier(fn,
prio) not correctly marking 'fn' as used in the !HOTPLUG_CPU case, and thus
generating compiler warnings of unused symbols, hence forcing people to add
#ifdefs.the compiler can skip truly unused functions just fine:
text data bss dec hex filename
1624412 728710 3674856 6027978 5bfaca vmlinux.before
1624412 728710 3674856 6027978 5bfaca vmlinux.after[akpm@osdl.org: topology.c fix]
Signed-off-by: Ingo Molnar
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
06 Dec, 2006
1 commit
-
Fix up arch-specific work items where possible to use the new work_struct and
delayed_work structs.Three places that enqueue bits of their stack and then return have been marked
with #error as this is not permitted.Signed-Off-By: David Howells
27 Oct, 2006
1 commit
-
sscanf() could leave the interval value unchanged in which case it
would be used uninitialized.Signed-off-by: Gerald Schaefer
Signed-off-by: Martin Schwidefsky
11 Oct, 2006
1 commit
-
Remove the last few places where a pointer to pt_regs gets passed.
Also make sure we call set_irq_regs() before irq_enter() and after
irq_exit(). This doesn't fix anything but makes sure s390 looks the
same like all other architectures.Signed-off-by: Heiko Carstens
Signed-off-by: Martin Schwidefsky
30 Sep, 2006
1 commit
-
Convert s390 page handling macros to functions. In particular this fixes a
problem with s390's SetPageUptodate macro which uses its input parameter
twice which again can cause subtle bugs.[akpm@osdl.org: build fix]
Cc: Martin Schwidefsky
Signed-off-by: Heiko Carstens
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
28 Sep, 2006
1 commit
-
Don't use static initialization for struct members containing
variables because gcc would generate more code and use double space
on stack.Signed-off-by: Gerald Schaefer
Signed-off-by: Martin Schwidefsky
26 Sep, 2006
1 commit
-
eventcounters: Do not display counters for zones that are not available on an
archDo not define or display counters for the DMA32 and the HIGHMEM zone if such
zones were not configured.[akpm@osdl.org: s390 fix]
[heiko.carstens@de.ibm.com: s390 fix]
Signed-off-by: Christoph Lameter
Cc: Martin Schwidefsky
Signed-off-by: Heiko Carstens
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
20 Sep, 2006
1 commit
-
Introduce asm header that contains the appldata data structures and
the diag inline assembly.Signed-off-by: Gerald Schaefer
Signed-off-by: Martin Schwidefsky
08 Aug, 2006
1 commit
-
Use __cpuinit for CPU hotplug notifier function.
Signed-off-by: Gerald Schaefer
Signed-off-by: Martin Schwidefsky
01 Aug, 2006
1 commit
-
Use hotplug version of register_cpu_notifier in late init functions.
Signed-off-by: Chandra Seetharaman
Cc: "Luck, Tony"
Cc: Martin Schwidefsky
Cc: Andi Kleen
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
01 Jul, 2006
4 commits
-
* git://git.kernel.org/pub/scm/linux/kernel/git/bunk/trivial:
Remove obsolete #include
remove obsolete swsusp_encrypt
arch/arm26/Kconfig typos
Documentation/IPMI typos
Kconfig: Typos in net/sched/Kconfig
v9fs: do not include linux/version.h
Documentation/DocBook/mtdnand.tmpl: typo fixes
typo fixes: specfic -> specific
typo fixes in Documentation/networking/pktgen.txt
typo fixes: occuring -> occurring
typo fixes: infomation -> information
typo fixes: disadvantadge -> disadvantage
typo fixes: aquire -> acquire
typo fixes: mecanism -> mechanism
typo fixes: bandwith -> bandwidth
fix a typo in the RTC_CLASS help text
smb is no longer maintainedManually merged trivial conflict in arch/um/kernel/vmlinux.lds.S
-
The remaining counters in page_state after the zoned VM counter patches
have been applied are all just for show in /proc/vmstat. They have no
essential function for the VM.We use a simple increment of per cpu variables. In order to avoid the most
severe races we disable preempt. Preempt does not prevent the race between
an increment and an interrupt handler incrementing the same statistics
counter. However, that race is exceedingly rare, we may only loose one
increment or so and there is no requirement (at least not in kernel) that
the vm event counters have to be accurate.In the non preempt case this results in a simple increment for each
counter. For many architectures this will be reduced by the compiler to a
single instruction. This single instruction is atomic for i386 and x86_64.
And therefore even the rare race condition in an interrupt is avoided for
both architectures in most cases.The patchset also adds an off switch for embedded systems that allows a
building of linux kernels without these counters.The implementation of these counters is through inline code that hopefully
results in only a single instruction increment instruction being emitted
(i386, x86_64) or in the increment being hidden though instruction
concurrency (EPIC architectures such as ia64 can get that done).Benefits:
- VM event counter operations usually reduce to a single inline instruction
on i386 and x86_64.
- No interrupt disable, only preempt disable for the preempt case.
Preempt disable can also be avoided by moving the counter into a spinlock.
- Handling is similar to zoned VM counters.
- Simple and easily extendable.
- Can be omitted to reduce memory use for embedded use.References:
RFC http://marc.theaimsgroup.com/?l=linux-kernel&m=113512330605497&w=2
RFC http://marc.theaimsgroup.com/?l=linux-kernel&m=114988082814934&w=2
local_t http://marc.theaimsgroup.com/?l=linux-kernel&m=114991748606690&w=2
V2 http://marc.theaimsgroup.com/?t=115014808400007&r=1&w=2
V3 http://marc.theaimsgroup.com/?l=linux-kernel&m=115024767022346&w=2
V4 http://marc.theaimsgroup.com/?l=linux-kernel&m=115047968808926&w=2Signed-off-by: Christoph Lameter
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Currently a single atomic variable is used to establish the size of the page
cache in the whole machine. The zoned VM counters have the same method of
implementation as the nr_pagecache code but also allow the determination of
the pagecache size per zone.Remove the special implementation for nr_pagecache and make it a zoned counter
named NR_FILE_PAGES.Updates of the page cache counters are always performed with interrupts off.
We can therefore use the __ variant here.Signed-off-by: Christoph Lameter
Cc: Trond Myklebust
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Signed-off-by: Jörn Engel
Signed-off-by: Adrian Bunk
29 Jun, 2006
3 commits
-
Add CPU ID and steal time, and make OS record size variable.
Signed-off-by: Gerald Schaefer
Signed-off-by: Martin Schwidefsky -
Remove EXPORT_SYMBOL_GPL(avenrun) from appdata_base.c, since it is
already exported in kernel/timer.cSigned-off-by: Gerald Schaefer
Signed-off-by: Martin Schwidefsky -
Signed-off-by: Gerald Schaefer
Signed-off-by: Martin Schwidefsky
28 Jun, 2006
1 commit
-
This patch reverts notifier_block changes made in 2.6.17
Signed-off-by: Chandra Seetharaman
Cc: Ashok Raj
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
26 Apr, 2006
1 commit
-
Few of the notifier_chain_register() callers use __devinitdata in the
definition of notifier_block data structure. It is incorrect as the
data structure should be available after the initializations (they do
not unregister them during initializations).This was leading to an oops when notifier_chain_register() call is
invoked for those callback chains after initialization.This patch fixes all such usages to _not_ have the notifier_block data
structure in the init data section.Signed-off-by: Chandra Seetharaman
Signed-off-by: Linus Torvalds
24 Mar, 2006
1 commit
-
Convert all kmalloc + memset sequences in arch/s390 to kzalloc usage.
Signed-off-by: Eric Sesterhenn
Signed-off-by: Martin Schwidefsky
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
07 Jan, 2006
2 commits
-
Sanitize some s390 Kconfig options. We have ARCH_S390, ARCH_S390X,
ARCH_S390_31, 64BIT, S390_SUPPORT and COMPAT. Replace these 6 options by
S390, 64BIT and COMPAT.Signed-off-by: Martin Schwidefsky
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
There are some more places where the use of cputime_t instead of an integer
type and the associated macros is necessary for the virtual cputime accounting
on s390. Affected are the s390 specific appldata code and BSD process
accounting.Signed-off-by: Martin Schwidefsky
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
09 Nov, 2005
1 commit
-
You could open the /proc/sys/net/ipv4/conf// file, then
wait for interface to go away, try to grab as much memory as possible in
hope to hit the (kfreed) ctl_table. Then fill it with pointers to your
function. Then do read from file you've opened and if you are lucky,
you'll get it called as ->proc_handler() in kernel mode.So this is at least an Oops and possibly more. It does depend on an
interface going away though, so less of a security risk than it would
otherwise be.Signed-off-by: Greg Kroah-Hartman
Signed-off-by: Linus Torvalds
30 Jul, 2005
1 commit
-
Fix inline assembly that gets miscompiled by gcc 4.
Signed-off-by: Gerald Schaefer
Signed-off-by: Martin Schwidefsky
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds