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2009-03-13Merge branch 'core/locking' into tracing/ftraceIngo Molnar
2009-03-13locking: rename trace_softirq_[enter|exit] => lockdep_softirq_[enter|exit]Ingo Molnar
Impact: cleanup The naming clashes with upcoming softirq tracepoints, so rename the APIs to lockdep_*(). Requested-by: Steven Rostedt <rostedt@goodmis.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-03-13Merge branch 'linus' into core/lockingIngo Molnar
2009-03-10idr: make idr_remove_all() do removal -before- free_layer()Paul E. McKenney
Fix a problem in the IDR system, where an idr_remove_all() hands a data element to call_rcu() (via free_layer()) before making that data element inaccessible to new readers. This is very bad, and results in readers still having a reference to this data element at the end of the grace period. Tests on large machines that concurrently map and unmap user-space memory within the same multithreaded process result in crashes within about five minutes. Applying this patch increases the kernel's longevity to the three-to-eight-hour range. There appear to be other similar problems in idr_get_empty_slot() and sub_remove(), but I fixed the easy one in idr_remove_all() first. It is therefore no surprise that failures still occur. Located-by: Milton Miller II <miltonm@austin.ibm.com> Tested-by: Milton Miller II <miltonm@austin.ibm.com> Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Cc: Manfred Spraul <manfred@colorfullife.com> Cc: Ingo Molnar <mingo@elte.hu> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-03-10Merge branch 'core/printk' into tracing/ftraceIngo Molnar
2009-03-10vsprintf: fix bug in negative value printingFrederic Weisbecker
Sitsofe Wheeler found and bisected that while unifying the vsprintf format decoding in: fef20d9: vsprintf: unify the format decoding layer for its 3 users The sign flag has been dropped out in favour of precise types (ie: LONG/ULONG). But the format helper number() still needs this flag to keep track of the signedness unless it will consider all numbers as unsigned. Also add an explicit cast to int (for %d) while parsing with va_arg() to ensure the highest bit is well extended on the 64 bits number that hosts the value in case of negative values. Reported-Bisected-Tested-by: Sitsofe Wheeler <sitsofe@yahoo.com> Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com> Cc: Lai Jiangshan <laijs@cn.fujitsu.com> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> LKML-Reference: <20090309201503.GA5010@nowhere> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-03-08Merge branches 'tracing/doc', 'tracing/ftrace', 'tracing/printk' and ↵Ingo Molnar
'tracing/textedit' into tracing/core
2009-03-06Merge branch 'core/printk' into tracing/ftraceIngo Molnar
2009-03-06vsprintf: unify the format decoding layer for its 3 usersFrederic Weisbecker
An new optimization is making its way to ftrace. Its purpose is to make trace_printk() consuming less memory and be faster. Written by Lai Jiangshan, the approach is to delay the formatting job from tracing time to output time. Currently, a call to trace_printk() will format the whole string and insert it into the ring buffer. Then you can read it on /debug/tracing/trace file. The new implementation stores the address of the format string and the binary parameters into the ring buffer, making the packet more compact and faster to insert. Later, when the user exports the traces, the format string is retrieved with the binary parameters and the formatting job is eventually done. The new implementation rewrites a lot of format decoding bits from vsnprintf() function, making now 3 differents functions to maintain in their duplicated parts of printf format decoding bits. Suggested by Ingo Molnar, this patch tries to factorize the most possible common bits from these functions. The real common part between them is the format decoding. Although they do somewhat similar jobs, their way to export or import the parameters is very different. Thus, only the decoding layer is extracted, unless you see other parts that could be worth factorized. Changes in V2: - Address a suggestion from Linus to group the format_decode() parameters inside a structure. Changes in v3: - Address other cleanups suggested by Ingo and Linus such as passing the printf_spec struct to the format helpers: pointer()/number()/string() Note that this struct is passed by copy and not by address. This is to avoid side effects because these functions often change these values and the changes shoudn't be persistant when a callee helper returns. It would be too risky. - Various cleanups (code alignement, switch/case instead of if/else fountains). - Fix a bug that printed the first format specifier following a %p Changes in v4: - drop unapropriate const qualifier loss while casting fmt to a char * (thanks to Vegard Nossum for having pointed this out). Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Acked-by: Steven Rostedt <rostedt@goodmis.org> LKML-Reference: <1236356510-8381-6-git-send-email-fweisbec@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-03-06vsprintf: add binary printfLai Jiangshan
Impact: add new APIs for binary trace printk infrastructure vbin_printf(): write args to binary buffer, string is copied when "%s" is occurred. bstr_printf(): read from binary buffer for args and format a string [fweisbec@gmail.com: rebase] Signed-off-by: Lai Jiangshan <laijs@cn.fujitsu.com> Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> LKML-Reference: <1236356510-8381-2-git-send-email-fweisbec@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-03-06Merge branch 'x86/core' into tracing/texteditIngo Molnar
Conflicts: arch/x86/Kconfig block/blktrace.c kernel/irq/handle.c Semantic conflict: kernel/trace/blktrace.c Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-03-05Merge commit 'v2.6.29-rc7' into core/lockingIngo Molnar
2009-03-04Merge branch 'core/locking' into tracing/ftraceIngo Molnar
2009-03-04lockdep: require framepointers for x86Peter Zijlstra
Require framepointers for x86, because otherwise we'll be having empty stack traces, which is useless. Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> LKML-Reference: <1236167295.5330.7240.camel@laptop> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-03-04Merge branches 'x86/apic', 'x86/cpu', 'x86/fixmap', 'x86/mm', 'x86/sched', ↵Ingo Molnar
'x86/setup-lzma', 'x86/signal' and 'x86/urgent' into x86/core
2009-02-20docsrc: use config instead of menuconfigRandy Dunlap
BUILD_DOCSRC should be controlled by "config" instead of "menuconfig". I have no idea how I managed to use "menuconfig" here. Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-02-19bzip2/lzma: don't stop search at first unconfigured compressionAlain Knaff
Impact: Bugfix, avoids kernels which build but panic on boot Fix a bug in decompress.c : only scanned until the first non-configured compressor (with disastrous result especially if that was gzip.) Signed-off-by: Alain Knaff <alain@knaff.lu> Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
2009-01-30cpumask: convert lib/smp_processor_id to new cpumask opsRusty Russell
Impact: fix debug_smp_processor_id() for CONFIG_CPUMASK_OFFSTACK=y The scheduler now uses the new cpumask API, which deals up to nr_cpumask_bits, whereas the API used NR_CPUS bits. If CONFIG_CPUMASK_OFFSTACK=y these two are not equal, so the top bits are undefined. Leading to bug 12518 "BUG: using smp_processor_id() in preemptible [00000000] code: dellWirelessCtl/..." The fix is simple: use the modern API in the check. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Signed-off-by: Mike Travis <travis@sgi.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-01-26Merge branch 'core-fixes-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'core-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: debugobjects: add and use INIT_WORK_ON_STACK rcu: remove duplicate CONFIG_RCU_CPU_STALL_DETECTOR relay: fix lock imbalance in relay_late_setup_files oprofile: fix uninitialized use of struct op_entry rcu: move Kconfig menu softlock: fix false panic which can occur if softlockup_thresh is reduced rcu: add __cpuinit to rcu_init_percpu_data()
2009-01-26Merge branch 'x86-fixes-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (29 commits) xen: unitialised return value in xenbus_write_transaction x86: fix section mismatch warning x86: unmask CPUID levels on Intel CPUs, fix x86: work around PAGE_KERNEL_WC not getting WC in iomap_atomic_prot_pfn. x86: use standard PIT frequency xen: handle highmem pages correctly when shrinking a domain x86, mm: fix pte_free() xen: actually release memory when shrinking domain x86: unmask CPUID levels on Intel CPUs x86: add MSR_IA32_MISC_ENABLE bits to <asm/msr-index.h> x86: fix PTE corruption issue while mapping RAM using /dev/mem x86: mtrr fix debug boot parameter x86: fix page attribute corruption with cpa() Revert "x86: signal: change type of paramter for sys_rt_sigreturn()" x86: use early clobbers in usercopy*.c x86: remove kernel_physical_mapping_init() from init section fix: crash: IP: __bitmap_intersects+0x48/0x73 cpufreq: use work_on_cpu in acpi-cpufreq.c for drv_read and drv_write work_on_cpu: Use our own workqueue. work_on_cpu: don't try to get_online_cpus() in work_on_cpu. ...
2009-01-22Merge branch 'core/debugobjects' into core/urgentThomas Gleixner
2009-01-22rcu: remove duplicate CONFIG_RCU_CPU_STALL_DETECTORLai Jiangshan
Impact: remove the old CONFIG_RCU_CPU_STALL_DETECTOR tree_rcu introduce CONFIG_RCU_CPU_STALL_DETECTOR again. These two are the same exactly except: the old one "depends on CLASSIC_RCU" the new one "depends on CLASSIC_RCU || TREE_RCU" This patch remove the old one. Signed-off-by: Lai Jiangshan <laijs@cn.fujitsu.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-01-18x86: define ARCH_WANT_FRAME_POINTERSJeff Mahoney
Commit da4276b8299a6544dc41ac2485d3ffca5811b3fb changed a dependency for FRAME_POINTER from X86 to ARCH_WANT_FRAME_POINTERS, but didn't actually define it. This patch adds the definition for ARCH_WANT_FRAME_POINTERS. Without it, FRAME_POINTER can't be enabled on x86. Signed-off-by: Jeff Mahoney <jeffm@suse.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-01-15lib/idr.c: use kmem_cache_zalloc() for the idr_layer cacheAndrew Morton
David points out that the idr_remove_all() function returns unused slabs to the kmem cache, but needs to zero them first or else they will be uninitialized upon next use. This causes crashes which have been observed in the firewire subsystem. He fixed this by zeroing the object before freeing it in idr_remove_all(). But we agree that simply removing the constructor and zeroing the object at allocation time is simpler than relying upon slab constructor machinery and might even be faster. This problem was introduced by "idr: make idr_remove rcu-safe" (commit cf481c20c476ad2c0febdace9ce23f5a4db19582), which was first released in 2.6.27. There are no known codesites which trigger this bug in 2.6.27 or 2.6.28. The post-2.6.28 firewire changes are the only known triggerer. There might of course be not-yet-discovered triggerers in 2.6.27 and 2.6.28, and there might be out-of-tree triggerers which are added to those kernel versions. I'll let the -stable guys decide whether they want to backport this fix. Reported-by: David Moore <dcm@acm.org> Cc: Stefan Richter <stefanr@s5r6.in-berlin.de> Cc: Nadia Derbey <Nadia.Derbey@bull.net> Cc: Paul E. McKenney <paulmck@us.ibm.com> Cc: Manfred Spraul <manfred@colorfullife.com> Cc: Kristian Hgsberg <krh@redhat.com> Acked-by: Pekka Enberg <penberg@cs.helsinki.fi> Cc: <stable@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-01-15idr: fix wrong kernel-docLi Zefan
idr_get_new_above() and ida_get_new_above() return an id in the range of @staring_id ... 0x7fffffff, not 0 ... 0x7fffffff. Signed-off-by: Li Zefan <lizf@cn.fujitsu.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-01-12bzip2/lzma: comprehensible error messages for missing decompressorH. Peter Anvin
Instead of failing to identify a compressed image with a decompressor that we don't have compiled in, identify it and fail with a comprehensible panic message. Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
2009-01-10Merge branch 'x86-fixes-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (36 commits) x86: fix section mismatch warnings in mcheck/mce_amd_64.c x86: offer frame pointers in all build modes x86: remove duplicated #include's x86: k8 numa register active regions later x86: update Alan Cox's email addresses x86: rename all fields of mpc_table mpc_X to X x86: rename all fields of mpc_oemtable oem_X to X x86: rename all fields of mpc_bus mpc_X to X x86: rename all fields of mpc_cpu mpc_X to X x86: rename all fields of mpc_intsrc mpc_X to X x86: rename all fields of mpc_lintsrc mpc_X to X x86: rename all fields of mpc_iopic mpc_X to X x86: irqinit_64.c init_ISA_irqs should be static Documentation/x86/boot.txt: payload length was changed to payload_length x86: setup_percpu.c fix style problems x86: irqinit_64.c fix style problems x86: irqinit_32.c fix style problems x86: i8259.c fix style problems x86: irq_32.c fix style problems x86: ioport.c fix style problems ...
2009-01-10rbtree: add const qualifier to some functionsArtem Bityutskiy
The 'rb_first()', 'rb_last()', 'rb_next()' and 'rb_prev()' calls take a pointer to an RB node or RB root. They do not change the pointed objects, so add a 'const' qualifier in order to make life of the users of these functions easier. Indeed, if I have my own constant pointer &const struct my_type *p, and I call 'rb_next(&p->rb)', I get a GCC warning: warning: passing argument 1 of ‘rb_next’ discards qualifiers from pointer target type Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-01-10Merge branch 'linus' into x86/setup-lzmaIngo Molnar
Conflicts: init/do_mounts_rd.c
2009-01-09Merge git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-2.6-nommuLinus Torvalds
* git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-2.6-nommu: NOMMU: Support XIP on initramfs NOMMU: Teach kobjsize() about VMA regions. FLAT: Don't attempt to expand the userspace stack to fill the space allocated FDPIC: Don't attempt to expand the userspace stack to fill the space allocated NOMMU: Improve procfs output using per-MM VMAs NOMMU: Make mmap allocation page trimming behaviour configurable. NOMMU: Make VMAs per MM as for MMU-mode linux NOMMU: Delete askedalloc and realalloc variables NOMMU: Rename ARM's struct vm_region NOMMU: Fix cleanup handling in ramfs_nommu_get_umapped_area()
2009-01-08bzip2/lzma: centralize format detectionH. Peter Anvin
Centralize the compression format detection to a common routine in the lib directory, and use it for both initramfs and initrd. Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2009-01-08bzip2/lzma: fix decompress_inflate.c vs multi-block-with-embedded-filenameAlain Knaff
Impact: Bug fix Fix gunzip uncompression, so that it also works with files with embedded filenames that are larger than one block. Signed-off-by: Alain Knaff <alain@knaff.lu> Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2009-01-08bzip2/lzma: fix constant in decompress_inflateH. Peter Anvin
Impact: Cleanup Fix constant 0x8100 /* 32K */; according to Alain the value 0x8100 was left over test code to test misalignment, the correct value is indeed 0x8000 == 32K. Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2009-01-08generic swap(): lib/sort.c: rename swap to swap_funcWu Fengguang
This is to avoid name clashes for the introduction of a global swap() macro. Signed-off-by: Wu Fengguang <fengguang.wu@intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-01-08NOMMU: Make VMAs per MM as for MMU-mode linuxDavid Howells
Make VMAs per mm_struct as for MMU-mode linux. This solves two problems: (1) In SYSV SHM where nattch for a segment does not reflect the number of shmat's (and forks) done. (2) In mmap() where the VMA's vm_mm is set to point to the parent mm by an exec'ing process when VM_EXECUTABLE is specified, regardless of the fact that a VMA might be shared and already have its vm_mm assigned to another process or a dead process. A new struct (vm_region) is introduced to track a mapped region and to remember the circumstances under which it may be shared and the vm_list_struct structure is discarded as it's no longer required. This patch makes the following additional changes: (1) Regions are now allocated with alloc_pages() rather than kmalloc() and with no recourse to __GFP_COMP, so the pages are not composite. Instead, each page has a reference on it held by the region. Anything else that is interested in such a page will have to get a reference on it to retain it. When the pages are released due to unmapping, each page is passed to put_page() and will be freed when the page usage count reaches zero. (2) Excess pages are trimmed after an allocation as the allocation must be made as a power-of-2 quantity of pages. (3) VMAs are added to the parent MM's R/B tree and mmap lists. As an MM may end up with overlapping VMAs within the tree, the VMA struct address is appended to the sort key. (4) Non-anonymous VMAs are now added to the backing inode's prio list. (5) Holes may be punched in anonymous VMAs with munmap(), releasing parts of the backing region. The VMA and region structs will be split if necessary. (6) sys_shmdt() only releases one attachment to a SYSV IPC shared memory segment instead of all the attachments at that addresss. Multiple shmat()'s return the same address under NOMMU-mode instead of different virtual addresses as under MMU-mode. (7) Core dumping for ELF-FDPIC requires fewer exceptions for NOMMU-mode. (8) /proc/maps is now the global list of mapped regions, and may list bits that aren't actually mapped anywhere. (9) /proc/meminfo gains a line (tagged "MmapCopy") that indicates the amount of RAM currently allocated by mmap to hold mappable regions that can't be mapped directly. These are copies of the backing device or file if not anonymous. These changes make NOMMU mode more similar to MMU mode. The downside is that NOMMU mode requires some extra memory to track things over NOMMU without this patch (VMAs are no longer shared, and there are now region structs). Signed-off-by: David Howells <dhowells@redhat.com> Tested-by: Mike Frysinger <vapier.adi@gmail.com> Acked-by: Paul Mundt <lethal@linux-sh.org>
2009-01-07Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial: (24 commits) trivial: chack -> check typo fix in main Makefile trivial: Add a space (and a comma) to a printk in 8250 driver trivial: Fix misspelling of "firmware" in docs for ncr53c8xx/sym53c8xx trivial: Fix misspelling of "firmware" in powerpc Makefile trivial: Fix misspelling of "firmware" in usb.c trivial: Fix misspelling of "firmware" in qla1280.c trivial: Fix misspelling of "firmware" in a100u2w.c trivial: Fix misspelling of "firmware" in megaraid.c trivial: Fix misspelling of "firmware" in ql4_mbx.c trivial: Fix misspelling of "firmware" in acpi_memhotplug.c trivial: Fix misspelling of "firmware" in ipw2100.c trivial: Fix misspelling of "firmware" in atmel.c trivial: Fix misspelled firmware in Kconfig trivial: fix an -> a typos in documentation and comments trivial: fix then -> than typos in comments and documentation trivial: update Jesper Juhl CREDITS entry with new email trivial: fix singal -> signal typo trivial: Fix incorrect use of "loose" in event.c trivial: printk: fix indentation of new_text_line declaration trivial: rtc-stk17ta8: fix sparse warning ...
2009-01-07x86: offer frame pointers in all build modesIngo Molnar
CONFIG_FRAME_POINTERS=y results in much better debug info for the kernel (clear and precise backtraces), with the only drawback being a ~1% increase in kernel size. So offer it unconditionally and enable it by default. Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-01-07bzip2/lzma: DECOMPRESS_GZIP should select ZLIB_INFLATEH. Peter Anvin
Impact: Partial resolution of build failure DECOMPRESS_GZIP is just a common-interface wrapper around the zlib_inflate code; it thus need to select it. Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2009-01-06Merge branch 'core-fixes-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'core-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: rcu: fix rcutorture bug rcu: eliminate synchronize_rcu_xxx macro rcu: make treercu safe for suspend and resume rcu: fix rcutree grace-period-latency bug on small systems futex: catch certain assymetric (get|put)_futex_key calls futex: make futex_(get|put)_key() calls symmetric locking, percpu counters: introduce separate lock classes swiotlb: clean up EXPORT_SYMBOL usage swiotlb: remove unnecessary declaration swiotlb: replace architecture-specific swiotlb.h with linux/swiotlb.h swiotlb: add support for systems with highmem swiotlb: store phys address in io_tlb_orig_addr array swiotlb: add hwdev to swiotlb_phys_to_bus() / swiotlb_sg_to_bus()
2009-01-06Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core-2.6Linus Torvalds
* git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core-2.6: (60 commits) uio: make uio_info's name and version const UIO: Documentation for UIO ioport info handling UIO: Pass information about ioports to userspace (V2) UIO: uio_pdrv_genirq: allow custom irq_flags UIO: use pci_ioremap_bar() in drivers/uio arm: struct device - replace bus_id with dev_name(), dev_set_name() libata: struct device - replace bus_id with dev_name(), dev_set_name() avr: struct device - replace bus_id with dev_name(), dev_set_name() block: struct device - replace bus_id with dev_name(), dev_set_name() chris: struct device - replace bus_id with dev_name(), dev_set_name() dmi: struct device - replace bus_id with dev_name(), dev_set_name() gadget: struct device - replace bus_id with dev_name(), dev_set_name() gpio: struct device - replace bus_id with dev_name(), dev_set_name() gpu: struct device - replace bus_id with dev_name(), dev_set_name() hwmon: struct device - replace bus_id with dev_name(), dev_set_name() i2o: struct device - replace bus_id with dev_name(), dev_set_name() IA64: struct device - replace bus_id with dev_name(), dev_set_name() i7300_idle: struct device - replace bus_id with dev_name(), dev_set_name() infiniband: struct device - replace bus_id with dev_name(), dev_set_name() ISDN: struct device - replace bus_id with dev_name(), dev_set_name() ...
2009-01-06percpu_counter: FBC_BATCH should be a variableEric Dumazet
For NR_CPUS >= 16 values, FBC_BATCH is 2*NR_CPUS Considering more and more distros are using high NR_CPUS values, it makes sense to use a more sensible value for FBC_BATCH, and get rid of NR_CPUS. A sensible value is 2*num_online_cpus(), with a minimum value of 32 (This minimum value helps branch prediction in __percpu_counter_add()) We already have a hotcpu notifier, so we can adjust FBC_BATCH dynamically. We rename FBC_BATCH to percpu_counter_batch since its not a constant anymore. Signed-off-by: Eric Dumazet <dada1@cosmosbay.com> Acked-by: David S. Miller <davem@davemloft.net> Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-01-06strict_strto* is not strict enoughPavel Machek
It decodes "\n" as 0, which is bad, because stray echo into backlight will turn your backlight off, etc... Signed-off-by: Pavel Machek <pavel@suse.cz> Cc: Yi Yang <yi.y.yang@intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-01-06lib: proportions.c trivial sparse lock annotationHarvey Harrison
Suppresses sparse warning: lib/proportions.c:159:16: warning: context imbalance in 'prop_get_global': wrong count at exit lib/proportions.c:159:16: context 'RCU': wanted 0, got 1 lib/proportions.c:164:2: warning: context imbalance in 'prop_put_global': unexpected unlock lib/proportions.c:164:2: context 'RCU': wanted 0, got -1 Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-01-06lib: radix_tree.c make percpu variable staticHarvey Harrison
radix_tree_preloads is unused outside of this file, make it static. Noticed by sparse: lib/radix-tree.c:84:1: warning: symbol 'per_cpu__radix_tree_preloads' was not declared. Should it be static? Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-01-06lib: fix sparse shadowed variable warningHarvey Harrison
pos is always set before being used, no need to declare a second one inside the if() block. lib/prio_heap.c:34:7: warning: symbol 'pos' shadows an earlier one lib/prio_heap.c:30:6: originally declared here Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-01-06Remove remaining unwinder codeAlexey Dobriyan
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Cc: Gabor Gombas <gombasg@sztaki.hu> Cc: Jan Beulich <jbeulich@novell.com> Cc: Andi Kleen <andi@firstfloor.org> Cc: Ingo Molnar <mingo@elte.hu>, Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-01-06oops handling: ensure that any oops is flushed to the mtdoops consoleViktor Rosendahl
This used to work unpatched with older kernels, during the development phase of mtdoops. Before commit e3e8a75d2acfc61ebf25524666a0a2c6abb0620c a space was printed with console_loglevel set to 15, which probably flushed the oops message as a side effect. This is another patch from the Nokia N810 kernel. Signed-off-by: Viktor Rosendahl <viktor.rosendahl@nokia.com> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Cc: Ingo Molnar <mingo@elte.hu> Cc: David Woodhouse <dwmw2@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-01-06swiotlb: struct device - replace bus_id with dev_name(), dev_set_name()Kay Sievers
Signed-off-by: Kay Sievers <kay.sievers@vrfy.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-01-06dynamic_printk: reduce one level of indentationWu Fengguang
Cleanup pr_debug_write() to reduce one level of indentation. Cc: Marcel Holtmann <marcel@holtmann.org> Acked-by: Jason Baron <jbaron@redhat.com> Signed-off-by: Wu Fengguang <fengguang.wu@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-01-06kobject: return the result of uevent sending by netlinkMing Lei
We need to return the result of uevent sending by netlink to caller, when uevent_helper is disabled and CONFIG_NET is defined. Signed-off-by: Ming Lei <tom.leiming@gmail.com> Cc: Kay Sievers <kay.sievers@vrfy.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>