02 Aug, 2008
2 commits
-
* 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jwessel/linux-2.6-kgdb:
kgdb: fix gdb serial thread queries
kgdb: fix kgdb_validate_break_address to perform a mem write
kgdb: remove the requirement for CONFIG_FRAME_POINTER -
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: (46 commits)
tcp: MD5: Fix IPv6 signatures
skbuff: add missing kernel-doc for do_not_encrypt
net/ipv4/route.c: fix build error
tcp: MD5: Fix MD5 signatures on certain ACK packets
ipv6: Fix ip6_xmit to send fragments if ipfragok is true
ipvs: Move userspace definitions to include/linux/ip_vs.h
netdev: Fix lockdep warnings in multiqueue configurations.
netfilter: xt_hashlimit: fix race between htable_destroy and htable_gc
netfilter: ipt_recent: fix race between recent_mt_destroy and proc manipulations
netfilter: nf_conntrack_tcp: decrease timeouts while data in unacknowledged
irda: replace __FUNCTION__ with __func__
nsc-ircc: default to dongle type 9 on IBM hardware
bluetooth: add quirks for a few hci_usb devices
hysdn: remove the packed attribute from PofTimStamp_tag
isdn: use the common ascii hex helpers
tg3: adapt tg3 to use reworked PCI PM code
atm: fix direct casts of pointers to u32 in the InterPhase driver
atm: fix const assignment/discard warnings in the ATM networking driver
net: use the common ascii hex helpers
random32: seeding improvement
...
01 Aug, 2008
1 commit
-
There is no technical reason that the kgdb core requires frame
pointers. It is up to the end user of KGDB to decide if they need
them or not.[ anemo@mba.ocn.ne.jp: removed frame pointers on mips ]
Signed-off-by: Jason Wessel
31 Jul, 2008
1 commit
-
The rationale is:
* use u32 consistently
* no need to do LCG on values from (better) get_random_bytes
* use more data from get_random_bytes for secondary seeding
* don't reduce state space on srandom32()
* enforce state variable initialization restrictionsNote: the second paper has a version of random32() with even longer period
and a version of random64() if needed.Signed-off-by: Stephen Hemminger
Signed-off-by: Andrew Morton
29 Jul, 2008
5 commits
-
This IOMMU helper function doesn't work for some architectures:
http://marc.info/?l=linux-kernel&m=121699304403202&w=2
It also breaks POWER and SPARC builds:
http://marc.info/?l=linux-kernel&m=121730388001890&w=2
Currently, only x86 IOMMUs use this so let's move it to x86 for
now.Reported-by: Stephen Rothwell
Signed-off-by: FUJITA Tomonori
Signed-off-by: Ingo Molnar -
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6: (21 commits)
x86/PCI: use dev_printk when possible
PCI: add D3 power state avoidance quirk
PCI: fix bogus "'device' may be used uninitialized" warning in pci_slot
PCI: add an option to allow ASPM enabled forcibly
PCI: disable ASPM on pre-1.1 PCIe devices
PCI: disable ASPM per ACPI FADT setting
PCI MSI: Don't disable MSIs if the mask bit isn't supported
PCI: handle 64-bit resources better on 32-bit machines
PCI: rewrite PCI BAR reading code
PCI: document pci_target_state
PCI hotplug: fix typo in pcie hotplug output
x86 gart: replace to_pages macro with iommu_num_pages
x86, AMD IOMMU: replace to_pages macro with iommu_num_pages
iommu: add iommu_num_pages helper function
dma-coherent: add documentation to new interfaces
Cris: convert to using generic dma-coherent mem allocator
Sh: use generic per-device coherent dma allocator
ARM: support generic per-device coherent dma mem
Generic dma-coherent: fix DMA_MEMORY_EXCLUSIVE
x86: use generic per-device dma coherent allocator
... -
Signed-off-by: Alexey Dobriyan
Cc: Dave Young
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
…nux-2.6-tip into for-linus
27 Jul, 2008
6 commits
-
This implements a platform-independent version of show_mem().
Signed-off-by: Johannes Weiner
Cc: Richard Henderson
Cc: Ivan Kokshaysky
Cc: Haavard Skinnemoen
Cc: Bryan Wu
Cc: Chris Zankel
Cc: Ingo Molnar
Cc: Jeff Dike
Cc: David S. Miller
Cc: Paul Mundt
Cc: Heiko Carstens
Cc: Martin Schwidefsky
Cc: David Howells
Cc: Benjamin Herrenschmidt
Cc: Paul Mackerras
Cc: Yoshinori Sato
Cc: Ralf Baechle
Cc: Greg Ungerer
Cc: Geert Uytterhoeven
Cc: Roman Zippel
Cc: Hirokazu Takata
Cc: Mikael Starvik
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
This adds the new function task_current_syscall() on machines where the
asm/syscall.h interface is supported (CONFIG_HAVE_ARCH_TRACEHOOK). It's
exported for modules to use in the future. This function safely samples
the state of a blocked thread to collect what system call it is blocked
in, and the six system call argument registers.Signed-off-by: Roland McGrath
Cc: Oleg Nesterov
Reviewed-by: Ingo Molnar
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Use WARN() instead of a printk+WARN_ON() pair; this way the message becomes
part of the warning section for better reporting/collection. In addition, one
of the if() clauses collapes into the WARN() entirely now.Signed-off-by: Arjan van de Ven
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Kmem cache passed to constructor is only needed for constructors that are
themselves multiplexeres. Nobody uses this "feature", nor does anybody uses
passed kmem cache in non-trivial way, so pass only pointer to object.Non-trivial places are:
arch/powerpc/mm/init_64.c
arch/powerpc/mm/hugetlbpage.cThis is flag day, yes.
Signed-off-by: Alexey Dobriyan
Acked-by: Pekka Enberg
Acked-by: Christoph Lameter
Cc: Jon Tollefson
Cc: Nick Piggin
Cc: Matt Mackall
[akpm@linux-foundation.org: fix arch/powerpc/mm/hugetlbpage.c]
[akpm@linux-foundation.org: fix mm/slab.c]
[akpm@linux-foundation.org: fix ubifs]
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Introduce gang_lookup_slot() and gang_lookup_slot_tag() functions, which
are used by lockless pagecache.Signed-off-by: Nick Piggin
Cc: Benjamin Herrenschmidt
Cc: Paul Mackerras
Cc: Hugh Dickins
Cc: "Paul E. McKenney"
Reviewed-by: Peter Zijlstra
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Add per-device dma_mapping_ops support for CONFIG_X86_64 as POWER
architecture does:This enables us to cleanly fix the Calgary IOMMU issue that some devices
are not behind the IOMMU (http://lkml.org/lkml/2008/5/8/423).I think that per-device dma_mapping_ops support would be also helpful for
KVM people to support PCI passthrough but Andi thinks that this makes it
difficult to support the PCI passthrough (see the above thread). So I
CC'ed this to KVM camp. Comments are appreciated.A pointer to dma_mapping_ops to struct dev_archdata is added. If the
pointer is non NULL, DMA operations in asm/dma-mapping.h use it. If it's
NULL, the system-wide dma_ops pointer is used as before.If it's useful for KVM people, I plan to implement a mechanism to register
a hook called when a new pci (or dma capable) device is created (it works
with hot plugging). It enables IOMMUs to set up an appropriate
dma_mapping_ops per device.The major obstacle is that dma_mapping_error doesn't take a pointer to the
device unlike other DMA operations. So x86 can't have dma_mapping_ops per
device. Note all the POWER IOMMUs use the same dma_mapping_error function
so this is not a problem for POWER but x86 IOMMUs use different
dma_mapping_error functions.The first patch adds the device argument to dma_mapping_error. The patch
is trivial but large since it touches lots of drivers and dma-mapping.h in
all the architecture.This patch:
dma_mapping_error() doesn't take a pointer to the device unlike other DMA
operations. So we can't have dma_mapping_ops per device.Note that POWER already has dma_mapping_ops per device but all the POWER
IOMMUs use the same dma_mapping_error function. x86 IOMMUs use device
argument.[akpm@linux-foundation.org: fix sge]
[akpm@linux-foundation.org: fix svc_rdma]
[akpm@linux-foundation.org: build fix]
[akpm@linux-foundation.org: fix bnx2x]
[akpm@linux-foundation.org: fix s2io]
[akpm@linux-foundation.org: fix pasemi_mac]
[akpm@linux-foundation.org: fix sdhci]
[akpm@linux-foundation.org: build fix]
[akpm@linux-foundation.org: fix sparc]
[akpm@linux-foundation.org: fix ibmvscsi]
Signed-off-by: FUJITA Tomonori
Cc: Muli Ben-Yehuda
Cc: Andi Kleen
Cc: Thomas Gleixner
Cc: Ingo Molnar
Cc: Avi Kivity
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
26 Jul, 2008
15 commits
-
* Replace previous instances of the cpumask_of_cpu_ptr* macros
with a the new (lvalue capable) generic cpumask_of_cpu().Signed-off-by: Mike Travis
Cc: Andrew Morton
Cc: Jack Steiner
Cc: Rusty Russell
Signed-off-by: Ingo Molnar -
Calculating the number of pages from given address and length numbers is a task
required in multiple IOMMU implementations. So implement this as a generic
function into the IOMMU helper code.Signed-off-by: Joerg Roedel
Cc: iommu@lists.linux-foundation.org
Cc: bhavna.sarathy@amd.com
Cc: robert.richter@amd.com
Cc: FUJITA Tomonori
Signed-off-by: Ingo Molnar -
Introduce the free_layer() routine: it is the one that actually frees memory
after a grace period has elapsed.Signed-off-by: Nadia Derbey
Reviewed-by: "Paul E. McKenney"
Cc: Manfred Spraul
Cc: Jim Houston
Cc: Pierre Peiffer
Acked-by: Rik van Riel
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Make idr_find rcu-safe: it can now be called inside an rcu_read critical
section.Signed-off-by: Nadia Derbey
Reviewed-by: "Paul E. McKenney"
Cc: Manfred Spraul
Cc: Jim Houston
Cc: Pierre Peiffer
Acked-by: Rik van Riel
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Make the idr_get_new* routines rcu-safe.
Signed-off-by: Nadia Derbey
Reviewed-by: "Paul E. McKenney"
Cc: Manfred Spraul
Cc: Jim Houston
Cc: Pierre Peiffer
Acked-by: Rik van Riel
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Do some code factorization in the return code analysis.
Signed-off-by: Nadia Derbey
Cc: "Paul E. McKenney"
Cc: Manfred Spraul
Cc: Jim Houston
Cc: Pierre Peiffer
Acked-by: Rik van Riel
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Fix the incomplete printk call.
Signed-off-by: Nadia Derbey
Reviewed-by: "Paul E. McKenney"
Cc: Manfred Spraul
Cc: Jim Houston
Cc: Pierre Peiffer
Acked-by: Rik van Riel
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
This is a trivial patch that renames:
. alloc_layer to get_from_free_list since it idr_pre_get that actually
allocates memory.
. free_layer to move_to_free_list since memory is not actually freed there.This makes things more clear for the next patches.
Signed-off-by: Nadia Derbey
Reviewed-by: "Paul E. McKenney"
Cc: Manfred Spraul
Cc: Jim Houston
Cc: Pierre Peiffer
Acked-by: Rik van Riel
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
All ratelimit user use same jiffies and burst params, so some messages
(callbacks) will be lost.For example:
a call printk_ratelimit(5 * HZ, 1)
b call printk_ratelimit(5 * HZ, 1) before the 5*HZ timeout of a, then b will
will be supressed.- rewrite __ratelimit, and use a ratelimit_state as parameter. Thanks for
hints from andrew.- Add WARN_ON_RATELIMIT, update rcupreempt.h
- remove __printk_ratelimit
- use __ratelimit in net_ratelimit
Signed-off-by: Dave Young
Cc: "David S. Miller"
Cc: "Paul E. McKenney"
Cc: Dave Young
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Arjan noted that the list_head debugging is BUG'ing when it detects
corruption. By causing the box to panic immediately, we're possibly
losing some bug reports. Changing this to a WARN() should mean we at the
least start seeing reports collected at kerneloops.orgSigned-off-by: Dave Jones
Cc: Matthew Wilcox
Cc: Arjan van de Ven
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Now that WARN() exists, we can fold some of the printk's into it.
Signed-off-by: Arjan van de Ven
Cc: Greg KH
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Inflate requires some dynamic memory allocation very early in the boot
process and this is provided with a set of four functions:
malloc/free/gzip_mark/gzip_release.The old inflate code used a mark/release strategy rather than implement
free. This new version instead keeps a count on the number of outstanding
allocations and when it hits zero, it resets the malloc arena.This allows removing all the mark and release implementations and unifying
all the malloc/free implementations.The architecture-dependent code must define two addresses:
- free_mem_ptr, the address of the beginning of the area in which
allocations should be made
- free_mem_end_ptr, the address of the end of the area in which
allocations should be made. If set to 0, then no check is made on
the number of allocations, it just grows as much as neededThe architecture-dependent code can also provide an arch_decomp_wdog()
function call. This function will be called several times during the
decompression process, and allow to notify the watchdog that the system is
still running. If an architecture provides such a call, then it must
define ARCH_HAS_DECOMP_WDOG so that the generic inflate code calls
arch_decomp_wdog().Work initially done by Matt Mackall, updated to a recent version of the
kernel and improved by me.[akpm@linux-foundation.org: coding-style fixes]
Signed-off-by: Thomas Petazzoni
Cc: Matt Mackall
Cc: Richard Henderson
Cc: Ivan Kokshaysky
Cc: Mikael Starvik
Cc: Jesper Nilsson
Cc: Haavard Skinnemoen
Cc: David Howells
Cc: Ingo Molnar
Cc: Thomas Gleixner
Cc: Andi Kleen
Cc: "H. Peter Anvin"
Acked-by: Paul Mundt
Acked-by: Yoshinori Sato
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Remove the conditional surrounding the definition of list_add() from list.h
since, if you define CONFIG_DEBUG_LIST, the definition you will subsequently
pick up from lib/list_debug.c will be absolutely identical, at which point you
can remove that redundant definition from list_debug.c as well.Signed-off-by: Robert P. J. Day
Cc: Dave Jones
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Extend memparse() to allow the caller to use a NULL second parameter, which
would represent no interest in returning the address of the end of the parsed
string.In numerous cases, callers invoke memparse() to parse a possibly-suffixed
string (such as "64K" or "2G" or whatever) and define a character pointer to
accept the end pointer being returned by memparse() even though they have no
interest in it and promptly throw it away.This (backward-compatible) enhancement allows callers to use NULL in the cases
where they just don't care about getting back that end pointer.[akpm@linux-foundation.org: coding-style fixes]
Signed-off-by: Robert P. J. Day
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Signed-off-by: Harvey Harrison
Acked-by: Richard Purdie
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
25 Jul, 2008
3 commits
-
This updates to define the key routines as constant
functions, which the macros will then call. Newer code can now call
bcd2bin() instead of SCREAMING BCD2BIN() TO THE FOUR WINDS.This lets each driver shrink their codespace by using N function calls to
a single (global) copy of those routines, instead of N inlined copies of
these functions per driver.These routines aren't used in speed-critical code. Almost all callers are
in the RTC framework. Typical per-driver savings is near 300 bytes.Signed-off-by: David Brownell
Acked-by: Adrian Bunk
Cc: Alessandro Zummo
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
lib/debugobjects.c has a function to test if an object is on the stack.
The block layer and ide needs it (they need to avoid DMA from/to stack
buffers). This patch moves the function to include/linux/sched.h so that
everyone can use it.lib/debugobjects.c uses current->stack but this patch uses a
task_stack_page() accessor, which is a preferable way to access the stack.Signed-off-by: FUJITA Tomonori
Cc: Christoph Lameter
Cc: Andy Whitcroft
Cc: Ingo Molnar
Cc: Thomas Gleixner
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Boot initialisation is very complex, with significant numbers of
architecture-specific routines, hooks and code ordering. While significant
amounts of the initialisation is architecture-independent, it trusts the data
received from the architecture layer. This is a mistake, and has resulted in
a number of difficult-to-diagnose bugs.This patchset adds some validation and tracing to memory initialisation. It
also introduces a few basic defensive measures. The validation code can be
explicitly disabled for embedded systems.This patch:
Add additional debugging and verification code for memory initialisation.
Once enabled, the verification checks are always run and when required
additional debugging information may be outputted via a mminit_loglevel=
command-line parameter.The verification code is placed in a new file mm/mm_init.c. Ideally other mm
initialisation code will be moved here over time.Signed-off-by: Mel Gorman
Cc: Christoph Lameter
Cc: Andy Whitcroft
Cc: Ingo Molnar
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
24 Jul, 2008
4 commits
-
* 'cpus4096-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (31 commits)
NR_CPUS: Replace NR_CPUS in speedstep-centrino.c
cpumask: Provide a generic set of CPUMASK_ALLOC macros, FIXUP
NR_CPUS: Replace NR_CPUS in cpufreq userspace routines
NR_CPUS: Replace per_cpu(..., smp_processor_id()) with __get_cpu_var
NR_CPUS: Replace NR_CPUS in arch/x86/kernel/genapic_flat_64.c
NR_CPUS: Replace NR_CPUS in arch/x86/kernel/genx2apic_uv_x.c
NR_CPUS: Replace NR_CPUS in arch/x86/kernel/cpu/proc.c
NR_CPUS: Replace NR_CPUS in arch/x86/kernel/cpu/mcheck/mce_64.c
cpumask: Optimize cpumask_of_cpu in lib/smp_processor_id.c, fix
cpumask: Use optimized CPUMASK_ALLOC macros in the centrino_target
cpumask: Provide a generic set of CPUMASK_ALLOC macros
cpumask: Optimize cpumask_of_cpu in lib/smp_processor_id.c
cpumask: Optimize cpumask_of_cpu in kernel/time/tick-common.c
cpumask: Optimize cpumask_of_cpu in drivers/misc/sgi-xp/xpc_main.c
cpumask: Optimize cpumask_of_cpu in arch/x86/kernel/ldt.c
cpumask: Optimize cpumask_of_cpu in arch/x86/kernel/io_apic_64.c
cpumask: Replace cpumask_of_cpu with cpumask_of_cpu_ptr
Revert "cpumask: introduce new APIs"
cpumask: make for_each_cpu_mask a bit smaller
net: Pass reference to cpumask variable in net/sunrpc/svc.c
...Fix up trivial conflicts in drivers/cpufreq/cpufreq.c manually
-
…ernel/git/tip/linux-2.6-tip
* 'core/softlockup-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
softlockup: fix invalid proc_handler for softlockup_panic
softlockup: fix watchdog task wakeup frequency
softlockup: fix watchdog task wakeup frequency
softlockup: show irqtrace
softlockup: print a module list on being stuck
softlockup: fix NMI hangs due to lock race - 2.6.26-rc regression
softlockup: fix false positives on nohz if CPU is 100% idle for more than 60 seconds
softlockup: fix softlockup_thresh fix
softlockup: fix softlockup_thresh unaligned access and disable detection at runtime
softlockup: allow panic on lockup -
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/drzeus/mmc:
sdhci: highmem capable PIO routines
sg: reimplement sg mapping iterator
mmc_test: print message when attaching to card
mmc: Remove Russell as primecell mci maintainer
mmc_block: bounce buffer highmem support
sdhci: fix bad warning from commit c8b3e02
sdhci: add warnings for bad buffers in ADMA path
mmc_test: test oversized sg lists
mmc_test: highmem tests
s3cmci: ensure host stopped on machine shutdown
au1xmmc: suspend/resume implementation
s3cmci: fixes for section mismatch warnings
pxamci: trivial fix of DMA alignment register bit clearing -
Remove HAVE_ARCH_KGDB_SHADOW_INFO because it does not
exist anywhere in the kernel mainline sourcesSigned-off-by: Jason Wessel
23 Jul, 2008
2 commits
-
This is alternative implementation of sg content iterator introduced
by commit 83e7d317... from Pierre Ossman in next-20080716. As there's
already an sg iterator which iterates over sg entries themselves, name
this sg_mapping_iterator.Slightly edited description from the original implementation follows.
Iteration over a sg list is not that trivial when you take into
account that memory pages might have to be mapped before being used.
Unfortunately, that means that some parts of the kernel restrict
themselves to directly accesible memory just to not have to deal with
the mess.This patch adds a simple iterator system that allows any code to
easily traverse an sg list and not have to deal with all the details.
The user can decide to consume part of the iteration. Also, iteration
can be stopped and resumed later if releasing the kmap between
iteration steps is necessary. These features are useful to implement
piecemeal sg copying for interrupt drive PIO for example.Signed-off-by: Tejun Heo
Signed-off-by: Pierre Ossman -
* git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-for-linus:
remove CONFIG_KMOD from core kernel code
remove CONFIG_KMOD from lib
remove CONFIG_KMOD from sparc64
rework try_then_request_module to do less in non-modular kernels
remove mention of CONFIG_KMOD from documentation
make CONFIG_KMOD invisible
modules: Take a shortcut for checking if an address is in a module
module: turn longs into ints for module sizes
Shrink struct module: CONFIG_UNUSED_SYMBOLS ifdefs
module: reorder struct module to save space on 64 bit builds
module: generic each_symbol iterator function
module: don't use stop_machine for waiting rmmod
22 Jul, 2008
1 commit
-
textsearch algorithms can be loaded, make the code depend
on CONFIG_MODULES instead of CONFIG_KMOD.Signed-off-by: Johannes Berg
Signed-off-by: Rusty Russell
