04 Jul, 2006
3 commits
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Generic lock debugging:
- generalized lock debugging framework. For example, a bug in one lock
subsystem turns off debugging in all lock subsystems.- got rid of the caller address passing (__IP__/__IP_DECL__/etc.) from
the mutex/rtmutex debugging code: it caused way too much prototype
hackery, and lockdep will give the same information anyway.- ability to do silent tests
- check lock freeing in vfree too.
- more finegrained debugging options, to allow distributions to
turn off more expensive debugging features.There's no separate 'held mutexes' list anymore - but there's a 'held locks'
stack within lockdep, which unifies deadlock detection across all lock
classes. (this is independent of the lockdep validation stuff - lockdep first
checks whether we are holding a lock already)Here are the current debugging options:
CONFIG_DEBUG_MUTEXES=y
CONFIG_DEBUG_LOCK_ALLOC=ywhich do:
config DEBUG_MUTEXES
bool "Mutex debugging, basic checks"config DEBUG_LOCK_ALLOC
bool "Detect incorrect freeing of live mutexes"Signed-off-by: Ingo Molnar
Signed-off-by: Arjan van de Ven
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
With the lock validator we detect mutex deadlocks (and more), the mutex
deadlock checking code is both redundant and slower. So remove it.Signed-off-by: Ingo Molnar
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Clean up rwsems.
Signed-off-by: Ingo Molnar
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
01 Jul, 2006
2 commits
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* 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
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Signed-off-by: Jörn Engel
Signed-off-by: Adrian Bunk
30 Jun, 2006
1 commit
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Conflicts:
drivers/acpi/acpi_memhotplug.c
29 Jun, 2006
2 commits
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The recent vsnprintf() fix introduced an off-by-one, and it's now
possible to overrun the target buffer by one byte.The "end" pointer points to past the end of the buffer, so if we
have to truncate the result, it needs to be done though "end[-1]".[ This is just an alternate and simpler patch to one proposed by Andrew
and Jeremy, who actually noticed the problem ]Acked-by: Andrew Morton
Acked-by: Jeremy Fitzhardinge
Signed-off-by: Linus Torvalds -
Temporarily add EXPORT_UNUSED_SYMBOL and EXPORT_UNUSED_SYMBOL_GPL. These
will be used as a transition measure for symbols that aren't used in the
kernel and are on the way out. When a module uses such a symbol, a warning
is printk'd at modprobe time.The main reason for removing unused exports is size: eacho export takes
roughly between 100 and 150 bytes of kernel space in the binary. This
patch gives users the option to immediately get this size gain via a config
option.Signed-off-by: Arjan van de Ven
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
28 Jun, 2006
5 commits
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Fix defaults and dependencies.
Signed-off-by: Roman Zippel
Cc: Thomas Gleixner
Cc: Ingo Molnar
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
RT-mutex tester: scriptable tester for rt mutexes, which allows userspace
scripting of mutex unit-tests (and dynamic tests as well), using the actual
rt-mutex implementation of the kernel.[akpm@osdl.org: fixlet]
Signed-off-by: Thomas Gleixner
Signed-off-by: Ingo Molnar
Signed-off-by: Arjan van de Ven
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Runtime debugging functionality for rt-mutexes.
Signed-off-by: Ingo Molnar
Signed-off-by: Thomas Gleixner
Signed-off-by: Arjan van de Ven
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Add the priority-sorted list (plist) implementation.
Signed-off-by: Ingo Molnar
Signed-off-by: Thomas Gleixner
Signed-off-by: Arjan van de Ven
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Fix function definitions to be ANSI-compliant:
lib/zlib_inflate/inffast.c:68:1: warning: non-ANSI definition of function 'inflate_fast'
lib/zlib_inflate/inftrees.c:33:1: warning: non-ANSI definition of function 'zlib_inflate_table'Signed-off-by: Randy Dunlap
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
27 Jun, 2006
9 commits
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so that userspace can be notified of dock and undock events.
Signed-off-by: Kristen Carlson Accardi
Signed-off-by: Greg Kroah-Hartman
Signed-off-by: Andrew Morton
Signed-off-by: Len Brown -
* git://git.kernel.org/pub/scm/linux/kernel/git/bunk/trivial:
typo fixes
Clean up 'inline is not at beginning' warnings for usb storage
Storage class should be first
i386: Trivial typo fixes
ixj: make ixj_set_tone_off() static
spelling fixes
fix paniced->panicked typos
Spelling fixes for Documentation/atomic_ops.txt
move acknowledgment for Mark Adler to CREDITS
remove the bouncing email address of David Campbell -
* x86-64: (83 commits)
[PATCH] x86_64: x86_64 stack usage debugging
[PATCH] x86_64: (resend) x86_64 stack overflow debugging
[PATCH] x86_64: msi_apic.c build fix
[PATCH] x86_64: i386/x86-64 Add nmi watchdog support for new Intel CPUs
[PATCH] x86_64: Avoid broadcasting NMI IPIs
[PATCH] x86_64: fix apic error on bootup
[PATCH] x86_64: enlarge window for stack growth
[PATCH] x86_64: Minor string functions optimizations
[PATCH] x86_64: Move export symbols to their C functions
[PATCH] x86_64: Standardize i386/x86_64 handling of NMI_VECTOR
[PATCH] x86_64: Fix modular pc speaker
[PATCH] x86_64: remove sys32_ni_syscall()
[PATCH] x86_64: Do not use -ffunction-sections for modules
[PATCH] x86_64: Add cpu_relax to apic_wait_icr_idle
[PATCH] x86_64: adjust kstack_depth_to_print default
[PATCH] i386/x86-64: adjust /proc/interrupts column headings
[PATCH] x86_64: Fix race in cpu_local_* on preemptible kernels
[PATCH] x86_64: Fix fast check in safe_smp_processor_id
[PATCH] x86_64: x86_64 setup.c - printing cmp related boottime information
[PATCH] i386/x86-64/ia64: Move polling flag into thread_info_status
...Manual resolve of trivial conflict in arch/i386/kernel/Makefile
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These are the i386-specific pieces to enable reliable stack traces. This is
going to be even more useful once CFI annotations get added to he assembly
code, namely to entry.S.Signed-off-by: Jan Beulich
Signed-off-by: Andi Kleen
Signed-off-by: Linus Torvalds -
These are the x86_64-specific pieces to enable reliable stack traces. The
only restriction with this is that it currently cannot unwind across the
interrupt->normal stack boundary, as that transition is lacking proper
annotation.Signed-off-by: Jan Beulich
Signed-off-by: Andi Kleen
Signed-off-by: Linus Torvalds -
These are the generic bits needed to enable reliable stack traces based
on Dwarf2-like (.eh_frame) unwind information. Subsequent patches will
enable x86-64 and i386 to make use of this.Thanks to Andi Kleen and Ingo Molnar, who pointed out several possibilities
for improvement.Signed-off-by: Jan Beulich
Signed-off-by: Andi Kleen
Signed-off-by: Linus Torvalds -
This patch adds idr_replace() to replace an existing pointer in a single
operation.Device-mapper will use this to update the pointer it stored against a given
id.Signed-off-by: Jeff Mahoney
Signed-off-by: Alasdair G Kergon
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
acquired (aquired)
contiguous (contigious)
successful (succesful, succesfull)
surprise (suprise)
whether (weather)
some other misspellingsSigned-off-by: Andreas Mohr
Signed-off-by: Adrian Bunk -
The place in the documentation of the Linux kernel to acknowledge
contributions is the CREDITS file.Give Mark Adler an entry there instead of including a string in the
kernel image.Signed-off-by: Adrian Bunk
26 Jun, 2006
8 commits
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I ran into a bug where the kernel died in the idr code:
cpu 0x1d: Vector: 300 (Data Access) at [c000000b7096f710]
pc: c0000000001f8984: .idr_get_new_above_int+0x140/0x330
lr: c0000000001f89b4: .idr_get_new_above_int+0x170/0x330
sp: c000000b7096f990
msr: 800000000000b032
dar: 0
dsisr: 40010000
current = 0xc000000b70d43830
paca = 0xc000000000556900
pid = 2022, comm = hwup
1d:mon> t
[c000000b7096f990] c0000000000d2ad8 .expand_files+0x2e8/0x364 (unreliable)
[c000000b7096faa0] c0000000001f8bf8 .idr_get_new_above+0x18/0x68
[c000000b7096fb20] c00000000002a054 .init_new_context+0x5c/0xf0
[c000000b7096fbc0] c000000000049dc8 .copy_process+0x91c/0x1404
[c000000b7096fcd0] c00000000004a988 .do_fork+0xd8/0x224
[c000000b7096fdc0] c00000000000ebdc .sys_clone+0x5c/0x74
[c000000b7096fe30] c000000000008950 .ppc_clone+0x8/0xc -
Implement kasprintf, a kernel version of asprintf. This allocates the
memory required for the formatted string, including the trailing '\0'.
Returns NULL on allocation failure.Signed-off-by: Jeremy Fitzhardinge
Signed-off-by: Chris Wright
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
This change allows callers to use a 0-byte buffer and a NULL buffer pointer
with vsnprintf, so it can be used to determine how large the resulting
formatted string will be.Previously the code effectively treated a size of 0 as a size of 4G (on
32-bit systems), with other checks preventing it from actually trying to
emit the string - but the terminal \0 would still be written, which would
crash if the buffer is NULL.This change changes the boundary check so that 'end' points to the putative
location of the terminal '\0', which is only written if size > 0.vsnprintf still allows the buffer size to be set very large, to allow
unbounded buffer sizes (to implement sprintf, etc).[akpm@osdl.org: fix long-vs-longlong confusion]
Signed-off-by: Jeremy Fitzhardinge
Signed-off-by: Chris Wright
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Fix kernel-doc formatting in Reed-Solomon code.
Signed-off-by: Randy Dunlap
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Make kernel-doc corrections & additions to lib/crc*.c. Add crc functions to
kernel-api.tmpl in DocBook.Signed-off-by: Randy Dunlap
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Make corrections/fixes to kernel-doc in lib/bitmap.c and include it in DocBook
template.Signed-off-by: Randy Dunlap
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
In radix_tree_tag_get(), return normalized value of 0/1, as indicated
by its comment.Signed-off-by: Wu Fengguang
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
constify a medium-large CRC code table.
Signed-off-by: Andreas Mohr
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
23 Jun, 2006
8 commits
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Add a new strstrip() function to lib/string.c for removing leading and
trailing whitespace from a string.Cc: Michael Holzheu
Acked-by: Ingo Oeser
Acked-by: Joern Engel
Cc: Corey Minyard
Signed-off-by: Pekka Enberg
Acked-by: Michael Holzheu
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
The percpu counter data type are changed in this set of patches to support
more users like ext3 who need more than 32 bit to store the free blocks
total in the filesystem.- Generic perpcu counters data type changes. The size of the global counter
and local counter were explictly specified using s64 and s32. The global
counter is changed from long to s64, while the local counter is changed from
long to s32, so we could avoid doing 64 bit update in most cases.- Users of the percpu counters are updated to make use of the new
percpu_counter_init() routine now taking an additional parameter to allow
users to pass the initial value of the global counter.Signed-off-by: Mingming Cao
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
- Move percpu_counter routines from mm/swap.c to lib/percpu_counter.c
Signed-off-by: Ravikiran Thirumalai
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
The comment states: 'Setting a tag on a not-present item is a BUG.' Hence
if 'index' is larger than the maxindex; the item _cannot_ be presen; it
should also be a BUG.Also, this allows the following statement (assume a fresh tree):
radix_tree_tag_set(root, 16, 1);
to fail silently, but when preceded by:
radix_tree_insert(root, 32, item);
it would BUG, because the height has been extended by the insert.
In neither case was 16 present.
Signed-off-by: Peter Zijlstra
Acked-by: Nick Piggin
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Reduce radix tree node memory usage by about a factor of 4 for small files
(< 64K). There are pointer traversal and memory usage costs for large
files with dense pagecache.Signed-off-by: Nick Piggin
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
The ability to have height 0 radix trees (a direct pointer to the data item
rather than going through a full node->slot) quietly disappeared with
old-2.6-bkcvs commit ffee171812d51652f9ba284302d9e5c5cc14bdfd. On 64-bit
machines this causes nearly 600 bytes to be used for every gfp_mask bits.Simplify radix_tree_delete's complex tag clearing arrangement (which would
become even more complex) by just falling back to tag clearing functions
(the pagecache radix-tree never uses this path anyway, so the icache
savings will mean it's actually a speedup).On my 4GB G5, this saves 8MB RAM per kernel kernel source+object tree in
pagecache.Pagecache lookup, insertion, and removal speed for small files will also be
improved.This makes RCU radix tree harder, but it's worth it.
Signed-off-by: Nick Piggin
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Modify the gen_pool allocator (lib/genalloc.c) to utilize a bitmap scheme
instead of the buddy scheme. The purpose of this change is to eliminate
the touching of the actual memory being allocated.Since the change modifies the interface, a change to the uncached allocator
(arch/ia64/kernel/uncached.c) is also required.Both Andrey Volkov and Jes Sorenson have expressed a desire that the
gen_pool allocator not write to the memory being managed. See the
following:http://marc.theaimsgroup.com/?l=linux-kernel&m=113518602713125&w=2
http://marc.theaimsgroup.com/?l=linux-kernel&m=113533568827916&w=2Signed-off-by: Dean Nelson
Cc: Andrey Volkov
Acked-by: Jes Sorensen
Cc: "Luck, Tony"
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Upgrade the zlib_inflate implementation in the kernel from a patched
version 1.1.3/4 to a patched 1.2.3.The code in the kernel is about seven years old and I noticed that the
external zlib library's inflate performance was significantly faster (~50%)
than the code in the kernel on ARM (and faster again on x86_32).For comparison the newer deflate code is 20% slower on ARM and 50% slower
on x86_32 but gives an approx 1% compression ratio improvement. I don't
consider this to be an improvement for kernel use so have no plans to
change the zlib_deflate code.Various changes have been made to the zlib code in the kernel, the most
significant being the extra functions/flush option used by ppp_deflate.
This update reimplements the features PPP needs to ensure it continues to
work.This code has been tested on ARM under both JFFS2 (with zlib compression
enabled) and ppp_deflate and on x86_32. JFFS2 sees an approx. 10% real
world file read speed improvement.This patch also removes ZLIB_VERSION as it no longer has a correct value.
We don't need version checks anyway as the kernel's module handling will
take care of that for us. This removal is also more in keeping with the
zlib author's wishes (http://www.zlib.net/zlib_faq.html#faq24) and I've
added something to the zlib.h header to note its a modified version.Signed-off-by: Richard Purdie
Acked-by: Joern Engel
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
22 Jun, 2006
1 commit
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These really need to be fixed, shout it out to the world.
Signed-off-by: Greg Kroah-Hartman
21 Jun, 2006
1 commit
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Introduce __iowrite64_copy. It will be used by the Myri-10G Ethernet
driver to post requests to the NIC. This driver will be submitted soon.__iowrite64_copy copies to I/O memory in units of 64 bits when possible (on
64 bit architectures). It reverts to __iowrite32_copy on 32 bit
architectures.Signed-off-by: Brice Goglin
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
