Commit Graph

35656 Commits (3f379b03fbfddd20536389a85c6456f8233d1f8d)

Author SHA1 Message Date
Paul E. McKenney 54dbf96c92 rcu: Suppress RCU lockdep warnings during early boot
RCU is used during very early boot, before RCU and lockdep have
been initialized.  So make the underlying primitives
(rcu_read_lock_held(), rcu_read_lock_bh_held(),
rcu_read_lock_sched_held(), and rcu_dereference_check()) check
for early boot via the rcu_scheduler_active flag.  This will
suppress false positives.

Also introduce a debug_lockdep_rcu_enabled() static inline
helper function, which tags the CONTINUE_PROVE_RCU case as
likely(), as suggested by Ingo Molnar.

Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: laijs@cn.fujitsu.com
Cc: dipankar@in.ibm.com
Cc: mathieu.desnoyers@polymtl.ca
Cc: josh@joshtriplett.org
Cc: dvhltc@us.ibm.com
Cc: niv@us.ibm.com
Cc: peterz@infradead.org
Cc: rostedt@goodmis.org
Cc: Valdis.Kletnieks@vt.edu
Cc: dhowells@redhat.com
LKML-Reference: <1267631219-8713-2-git-send-email-paulmck@linux.vnet.ibm.com>
[ v2: removed incomplete debug_lockdep_rcu_update() bits ]
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2010-03-04 12:09:19 +01:00
Paul E. McKenney 8d53dd546f rcu, ftrace: Fix RCU lockdep splat in ftrace_perf_buf_prepare()
Change the pair of rcu_dereference() calls in
ftrace_perf_buf_prepare() to rcu_dereference_sched().

Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Acked-by: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: laijs@cn.fujitsu.com
Cc: dipankar@in.ibm.com
Cc: mathieu.desnoyers@polymtl.ca
Cc: josh@joshtriplett.org
Cc: dvhltc@us.ibm.com
Cc: niv@us.ibm.com
Cc: peterz@infradead.org
Cc: Valdis.Kletnieks@vt.edu
Cc: dhowells@redhat.com
Cc: Frederic Weisbecker <fweisbec@gmail.com>
LKML-Reference: <1267667418-32233-3-git-send-email-paulmck@linux.vnet.ibm.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2010-03-04 12:07:35 +01:00
Paul E. McKenney e6033e3b30 rcu: Make rcu_read_lock_sched_held() handle !PREEMPT
The rcu_read_lock_sched_held() needs to unconditionally return
the value "1" in a !PREEMPT kernel, because under !PREEMPT,
-all- kernel code is implicitly preempt-disabled.  This patch
makes this happen.

Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: laijs@cn.fujitsu.com
Cc: dipankar@in.ibm.com
Cc: mathieu.desnoyers@polymtl.ca
Cc: josh@joshtriplett.org
Cc: dvhltc@us.ibm.com
Cc: niv@us.ibm.com
Cc: peterz@infradead.org
Cc: rostedt@goodmis.org
Cc: Valdis.Kletnieks@vt.edu
Cc: dhowells@redhat.com
LKML-Reference: <1267667418-32233-1-git-send-email-paulmck@linux.vnet.ibm.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2010-03-04 12:07:33 +01:00
Paul E. McKenney 5ed42b8113 rcu, cgroup: Relax the check in task_subsys_state() as early boot is now handled by lockdep-RCU
This patch removes the check for !rcu_scheduler_active because
this check has been incorporated into rcu_dereference_check().

Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: laijs@cn.fujitsu.com
Cc: dipankar@in.ibm.com
Cc: mathieu.desnoyers@polymtl.ca
Cc: josh@joshtriplett.org
Cc: dvhltc@us.ibm.com
Cc: niv@us.ibm.com
Cc: peterz@infradead.org
Cc: rostedt@goodmis.org
Cc: Valdis.Kletnieks@vt.edu
Cc: dhowells@redhat.com
LKML-Reference: <1267631219-8713-3-git-send-email-paulmck@linux.vnet.ibm.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2010-03-04 12:07:31 +01:00
Paul E. McKenney db1466b3e1 rcu: Use wrapper function instead of exporting tasklist_lock
Lockdep-RCU commit d11c563d exported tasklist_lock, which is not
a good thing.  This patch instead exports a function that uses
lockdep to check whether tasklist_lock is held.

Suggested-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: laijs@cn.fujitsu.com
Cc: dipankar@in.ibm.com
Cc: mathieu.desnoyers@polymtl.ca
Cc: josh@joshtriplett.org
Cc: dvhltc@us.ibm.com
Cc: niv@us.ibm.com
Cc: peterz@infradead.org
Cc: rostedt@goodmis.org
Cc: Valdis.Kletnieks@vt.edu
Cc: dhowells@redhat.com
Cc: Christoph Hellwig <hch@lst.de>
LKML-Reference: <1267631219-8713-1-git-send-email-paulmck@linux.vnet.ibm.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2010-03-04 11:46:14 +01:00
Ingo Molnar e2f4699ac1 Merge branch 'linus' into core/rcu
Merge reason: Backmerge latest upstream to queue up dependent fix in the
              scheduler.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
2010-03-01 09:28:58 +01:00
Linus Torvalds 6f5621cb16 Merge branch 'x86-ptrace-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'x86-ptrace-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  x86, ptrace: Remove set_stopped_child_used_math() in [x]fpregs_set
  x86, ptrace: Simplify xstateregs_get()
  ptrace: Fix ptrace_regset() comments and diagnose errors specifically
  parisc: Disable CONFIG_HAVE_ARCH_TRACEHOOK
  ptrace: Add support for generic PTRACE_GETREGSET/PTRACE_SETREGSET
  x86, ptrace: regset extensions to support xstate
2010-02-28 10:59:44 -08:00
Linus Torvalds c7e15899d0 Merge branch 'x86-pci-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'x86-pci-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  x86: Enable NMI on all cpus on UV
  vgaarb: Add user selectability of the number of GPUS in a system
  vgaarb: Fix VGA arbiter to accept PCI domains other than 0
  x86, uv: Update UV arch to target Legacy VGA I/O correctly.
  pci: Update pci_set_vga_state() to call arch functions
2010-02-28 10:59:18 -08:00
Linus Torvalds 46bbffad54 Merge branch 'x86-mm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'x86-mm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  x86, mm: Unify kernel_physical_mapping_init() API
  x86, mm: Allow highmem user page tables to be disabled at boot time
  x86: Do not reserve brk for DMI if it's not going to be used
  x86: Convert tlbstate_lock to raw_spinlock
  x86: Use the generic page_is_ram()
  x86: Remove BIOS data range from e820
  Move page_is_ram() declaration to mm.h
  Generic page_is_ram: use __weak
  resources: introduce generic page_is_ram()
2010-02-28 10:38:45 -08:00
Linus Torvalds f66ffdedbf Merge branch 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (25 commits)
  sched: Fix SCHED_MC regression caused by change in sched cpu_power
  sched: Don't use possibly stale sched_class
  kthread, sched: Remove reference to kthread_create_on_cpu
  sched: cpuacct: Use bigger percpu counter batch values for stats counters
  percpu_counter: Make __percpu_counter_add an inline function on UP
  sched: Remove member rt_se from struct rt_rq
  sched: Change usage of rt_rq->rt_se to rt_rq->tg->rt_se[cpu]
  sched: Remove unused update_shares_locked()
  sched: Use for_each_bit
  sched: Queue a deboosted task to the head of the RT prio queue
  sched: Implement head queueing for sched_rt
  sched: Extend enqueue_task to allow head queueing
  sched: Remove USER_SCHED
  sched: Fix the place where group powers are updated
  sched: Assume *balance is valid
  sched: Remove load_balance_newidle()
  sched: Unify load_balance{,_newidle}()
  sched: Add a lock break for PREEMPT=y
  sched: Remove from fwd decls
  sched: Remove rq_iterator from move_one_task
  ...

Fix up trivial conflicts in kernel/sched.c
2010-02-28 10:31:01 -08:00
Linus Torvalds 2531216f23 Merge branch 'sched-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'sched-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  sched: Fix race between ttwu() and task_rq_lock()
  sched: Fix SMT scheduler regression in find_busiest_queue()
  sched: Fix sched_mv_power_savings for !SMT
  kernel/sched.c: Suppress unused var warning
2010-02-28 10:23:41 -08:00
Linus Torvalds 6556a67435 Merge branch 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (172 commits)
  perf_event, amd: Fix spinlock initialization
  perf_event: Fix preempt warning in perf_clock()
  perf tools: Flush maps on COMM events
  perf_events, x86: Split PMU definitions into separate files
  perf annotate: Handle samples not at objdump output addr boundaries
  perf_events, x86: Remove superflous MSR writes
  perf_events: Simplify code by removing cpu argument to hw_perf_group_sched_in()
  perf_events, x86: AMD event scheduling
  perf_events: Add new start/stop PMU callbacks
  perf_events: Report the MMAP pgoff value in bytes
  perf annotate: Defer allocating sym_priv->hist array
  perf symbols: Improve debugging information about symtab origins
  perf top: Use a macro instead of a constant variable
  perf symbols: Check the right return variable
  perf/scripts: Tag syscall_name helper as not yet available
  perf/scripts: Add perf-trace-python Documentation
  perf/scripts: Remove unnecessary PyTuple resizes
  perf/scripts: Add syscall tracing scripts
  perf/scripts: Add Python scripting engine
  perf/scripts: Remove check-perf-trace from listed scripts
  ...

Fix trivial conflict in tools/perf/util/probe-event.c
2010-02-28 10:20:25 -08:00
Linus Torvalds e0d272429a Merge branch 'tracing-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'tracing-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (28 commits)
  ftrace: Add function names to dangling } in function graph tracer
  tracing: Simplify memory recycle of trace_define_field
  tracing: Remove unnecessary variable in print_graph_return
  tracing: Fix typo of info text in trace_kprobe.c
  tracing: Fix typo in prof_sysexit_enable()
  tracing: Remove CONFIG_TRACE_POWER from kernel config
  tracing: Fix ftrace_event_call alignment for use with gcc 4.5
  ftrace: Remove memory barriers from NMI code when not needed
  tracing/kprobes: Add short documentation for HAVE_REGS_AND_STACK_ACCESS_API
  s390: Add pt_regs register and stack access API
  tracing/kprobes: Make Kconfig dependencies generic
  tracing: Unify arch_syscall_addr() implementations
  tracing: Add notrace to TRACE_EVENT implementation functions
  ftrace: Allow to remove a single function from function graph filter
  tracing: Add correct/incorrect to sort keys for branch annotation output
  tracing: Simplify test for function_graph tracing start point
  tracing: Drop the tr check from the graph tracing path
  tracing: Add stack dump to trace_printk if stacktrace option is set
  tracing: Use appropriate perl constructs in recordmcount.pl
  tracing: optimize recordmcount.pl for offsets-handling
  ...
2010-02-28 10:17:55 -08:00
Linus Torvalds 642c4c75a7 Merge branch 'core-rcu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'core-rcu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (44 commits)
  rcu: Fix accelerated GPs for last non-dynticked CPU
  rcu: Make non-RCU_PROVE_LOCKING rcu_read_lock_sched_held() understand boot
  rcu: Fix accelerated grace periods for last non-dynticked CPU
  rcu: Export rcu_scheduler_active
  rcu: Make rcu_read_lock_sched_held() take boot time into account
  rcu: Make lockdep_rcu_dereference() message less alarmist
  sched, cgroups: Fix module export
  rcu: Add RCU_CPU_STALL_VERBOSE to dump detailed per-task information
  rcu: Fix rcutorture mod_timer argument to delay one jiffy
  rcu: Fix deadlock in TREE_PREEMPT_RCU CPU stall detection
  rcu: Convert to raw_spinlocks
  rcu: Stop overflowing signed integers
  rcu: Use canonical URL for Mathieu's dissertation
  rcu: Accelerate grace period if last non-dynticked CPU
  rcu: Fix citation of Mathieu's dissertation
  rcu: Documentation update for CONFIG_PROVE_RCU
  security: Apply lockdep-based checking to rcu_dereference() uses
  idr: Apply lockdep-based diagnostics to rcu_dereference() uses
  radix-tree: Disable RCU lockdep checking in radix tree
  vfs: Abstract rcu_dereference_check for files-fdtable use
  ...
2010-02-28 10:13:16 -08:00
Linus Torvalds f91b22c35f Merge branches 'core-ipi-for-linus', 'core-locking-for-linus', 'tracing-fixes-for-linus', 'x86-debug-for-linus', 'x86-doc-for-linus', 'x86-gpu-for-linus' and 'x86-rlimit-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'core-ipi-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  generic-ipi: Optimize accesses by using DEFINE_PER_CPU_SHARED_ALIGNED for IPI data

* 'core-locking-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  plist: Fix grammar mistake, and c-style mistake

* 'tracing-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  kprobes: Add mcount to the kprobes blacklist

* 'x86-debug-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  x86_64: Print modules like i386 does

* 'x86-doc-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  x86: Put 'nopat' in kernel-parameters

* 'x86-gpu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  x86-64: Allow fbdev primary video code

* 'x86-rlimit-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  x86: Use helpers for rlimits
2010-02-28 10:04:02 -08:00
Paul E. McKenney 1883c79a57 rcu: Make task_subsys_state() RCU-lockdep checks handle boot-time use
It is apparently legal to invoke task_subsys_state() without RCU
protection during early boot time.  After all, there are no
concurrent tasks, so there can be no grace periods completing
concurrently.

But this does need an Acked-by from the cgroups folks.

Located-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: laijs@cn.fujitsu.com
Cc: dipankar@in.ibm.com
Cc: mathieu.desnoyers@polymtl.ca
Cc: josh@joshtriplett.org
Cc: dvhltc@us.ibm.com
Cc: niv@us.ibm.com
Cc: peterz@infradead.org
Cc: rostedt@goodmis.org
Cc: Valdis.Kletnieks@vt.edu
Cc: dhowells@redhat.com
LKML-Reference: <1267311188-16603-2-git-send-email-paulmck@linux.vnet.ibm.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2010-02-28 09:17:42 +01:00
Linus Torvalds 7981164791 Merge branch 'for-linus' of git://git390.marist.edu/pub/scm/linux-2.6
* 'for-linus' of git://git390.marist.edu/pub/scm/linux-2.6: (35 commits)
  [S390] time: remove unused code
  [S390] zcore: Add prefix registers to dump header
  [S390] correct vdso version string
  [S390] add support for compressed kernels
  [S390] Define new s390 ELF note sections in elf.h
  [S390] codepage conversion of kernel parameter line
  [S390] seq_file: convert drivers/s390/
  [S390] add z9-ec/z10 instruction to kernel disassembler
  [S390] dasd: correct offline processing
  [S390] dasd: fix refcounting.
  [S390] dasd: fix online/offline race
  [S390] use kprobes_built_in() in mm/fault code
  [S390] bug: use relative pointers in bug table entries
  [S390] Cleanup struct _lowcore usage and defines.
  [S390] free_initmem: reduce code duplication
  [S390] Replace ENOTSUPP usage with EOPNOTSUPP
  [S390] spinlock: check virtual cpu running status
  [S390] sysinfo: fix SYSIB 3,2,2 structure
  [S390] add MACHINE_IS_LPAR flag
  [S390] qdio: optimize cache line usage of struct qdio_irq
  ...
2010-02-27 16:20:17 -08:00
Linus Torvalds 8d37a371b6 Merge git://git.kernel.org/pub/scm/linux/kernel/git/brodo/pcmcia-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/brodo/pcmcia-2.6: (49 commits)
  pcmcia: validate late-added resources
  pcmcia: allow for extension of resource interval
  pcmcia: remove useless msleep in ds.c
  pcmcia: use read_cis_mem return value
  pcmcia: handle error in serial_cs config calls
  pcmcia: add locking to pcmcia_{read,write}_cis_mem
  pcmcia: avoid prod_id memleak
  pcmcia: avoid sysfs-related lockup for cardbus
  pcmcia: use state machine for extended requery
  pcmcia: delay re-scanning and re-querying of PCMCIA bus
  pcmcia: use pccardd to handle eject, insert, suspend and resume requests
  pcmcia: use ops_mutex for rsrc_{mgr,nonstatic} locking
  pcmcia: use mutex for dynid lock
  pcmcia: assert locking to struct pcmcia_device
  pcmcia: add locking documentation
  pcmcia: simplify locking
  pcmcia: add locking to struct pcmcia_socket->pcmcia_state()
  pcmcia: protect s->device_count
  pcmcia: properly lock skt->irq, skt->irq_mask
  pcmcia: lock ops->set_socket
  ...
2010-02-27 16:18:30 -08:00
Linus Torvalds ef1a8de8ea Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc
* 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc: (88 commits)
  powerpc: Fix lwsync feature fixup vs. modules on 64-bit
  powerpc: Convert pmc_owner_lock to raw_spinlock
  powerpc: Convert die.lock to raw_spinlock
  powerpc: Convert tlbivax_lock to raw_spinlock
  powerpc: Convert mpic locks to raw_spinlock
  powerpc: Convert pmac_pic_lock to raw_spinlock
  powerpc: Convert big_irq_lock to raw_spinlock
  powerpc: Convert feature_lock to raw_spinlock
  powerpc: Convert i8259_lock to raw_spinlock
  powerpc: Convert beat_htab_lock to raw_spinlock
  powerpc: Convert confirm_error_lock to raw_spinlock
  powerpc: Convert ipic_lock to raw_spinlock
  powerpc: Convert native_tlbie_lock to raw_spinlock
  powerpc: Convert beatic_irq_mask_lock to raw_spinlock
  powerpc: Convert nv_lock to raw_spinlock
  powerpc: Convert context_lock to raw_spinlock
  powerpc/85xx: Add NOR, LEDs and PIB support for MPC8568E-MDS boards
  powerpc/86xx: Enable VME driver on the GE SBC610
  powerpc/86xx: Enable VME driver on the GE PPC9A
  powerpc/86xx: Add MSI section to GE PPC9A DTS
  ...
2010-02-27 13:26:18 -08:00
Ingo Molnar 6fb83029db Merge branch 'tracing/core' of git://git.kernel.org/pub/scm/linux/kernel/git/frederic/random-tracing into tracing/core 2010-02-27 10:06:10 +01:00
Paul E. McKenney 0b1c87278a rcu: Make non-RCU_PROVE_LOCKING rcu_read_lock_sched_held() understand boot
Before the scheduler starts, all tasks are non-preemptible by
definition. So, during that time, rcu_read_lock_sched_held()
needs to always return "true".  This patch makes that be so
for RCU_PROVE_LOCKING=n.

Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: laijs@cn.fujitsu.com
Cc: dipankar@in.ibm.com
Cc: mathieu.desnoyers@polymtl.ca
Cc: josh@joshtriplett.org
Cc: dvhltc@us.ibm.com
Cc: niv@us.ibm.com
Cc: peterz@infradead.org
Cc: rostedt@goodmis.org
Cc: Valdis.Kletnieks@vt.edu
Cc: dhowells@redhat.com
LKML-Reference: <1267231138-27856-2-git-send-email-paulmck@linux.vnet.ibm.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2010-02-27 09:53:52 +01:00
Linus Torvalds 06a79b82b2 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/suspend-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/suspend-2.6:
  PM / Hibernate: Fix preallocating of memory
  PM / Hibernate: Remove swsusp.c finally
  PM / Hibernate: Remove trailing space in message
  PM: Allow SCSI devices to suspend/resume asynchronously
  PM: Allow USB devices to suspend/resume asynchronously
  USB: implement non-tree resume ordering constraints for PCI host controllers
  PM: Allow PCI devices to suspend/resume asynchronously
  PM / Hibernate: Swap, remove useless check from swsusp_read()
  PM / Hibernate: Really deprecate deprecated user ioctls
  PM: Allow device drivers to use dpm_wait()
  PM: Start asynchronous resume threads upfront
  PM: Add facility for advanced testing of async suspend/resume
  PM: Add a switch for disabling/enabling asynchronous suspend/resume
  PM: Asynchronous suspend and resume of devices
  PM: Add parent information to timing messages
  PM: Document device power attributes in sysfs
  PM / Runtime: Add sysfs switch for disabling device run-time PM
2010-02-26 17:22:53 -08:00
Linus Torvalds 2b8c70b217 Merge branch 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-2.6
* 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-2.6: (362 commits)
  V4L-DVB: cx88-dvb: remove extra attribution for core
  V4L/DVB: v4l: soc_camera: fix bound checking of mbus_fmt[] index
  V4L/DVB: Add support for SMT7020 to cx88
  V4L/DVB: radio-si470x: Use UTF-8 encoding on a comment
  V4L/DVB: MAINTAINERS: Telegent tlg2300 section fix
  V4L/DVB: gspca_stv06xx: Add support for camera button
  V4L/DVB: gspca_ov519: add support for the button on ov511 based cams
  V4L/DVB: gspca_ov519: Add support for the button on ov518 based cams
  V4L/DVB: gspca_ov519: add support for the button on ov519 based cams
  V4L/DVB: gspca_main: Fix a compile error when CONFIG_INPUT is not set
  V4L/DVB: gspca_main: some input error handling fixes
  V4L/DVB: gspca_main: Allow use of input device creation code for non int. inputs
  V4L/DVB: gspca_pac7302: much improved exposure control
  V4L/DVB: gspca_sonixb: Make sonixb driver handle pas106 and pas202 cameras
  V4L/DVB: gspca_sonixb: pas106: fixup bright ctrl and add gain and exposure ctrls
  V4L/DVB: Documentation: gspca.txt: update known mr97310a cams
  V4L/DVB: gspca_mr97310a: add support for the Sakar 1638x CyberPix
  V4L/DVB: gscpa_sonixb: limit ov7630 max framerate at 640x480
  V4L/DVB: gspca_sonixb: pas202: fixup brightness ctrl and add gain and exposure ctrls
  V4L/DVB: gscpa_sonixb: Differentiate between sensors with a coarse and fine expo ctrl
  ...
2010-02-26 17:16:20 -08:00
Linus Torvalds f24407d2bd Merge git://git.kernel.org/pub/scm/linux/kernel/git/jejb/xfs-vipt
* git://git.kernel.org/pub/scm/linux/kernel/git/jejb/xfs-vipt:
  xfs: fix xfs to work with Virtually Indexed architectures
  sh: add mm API for DMA to vmalloc/vmap areas
  arm: add mm API for DMA to vmalloc/vmap areas
  parisc: add mm API for DMA to vmalloc/vmap areas
  mm: add coherence API for DMA to vmalloc/vmap areas
2010-02-26 17:05:10 -08:00
Linus Torvalds 654451748b Merge git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6: (158 commits)
  [SCSI] Fix printing of failed 32-byte commands
  [SCSI] Fix printing of variable length commands
  [SCSI] libsrp: fix bug in ADDITIONAL CDB LENGTH interpretation
  [SCSI] scsi_dh_alua: Add IBM Power Virtual SCSI ALUA device to dev list
  [SCSI] scsi_dh_alua: add netapp to dev list
  [SCSI] qla2xxx: Update version number to 8.03.02-k1.
  [SCSI] qla2xxx: EEH: Restore PCI saved state during pci slot reset.
  [SCSI] qla2xxx: Add firmware ETS burst support.
  [SCSI] qla2xxx: Correct loop-resync issues during SNS scans.
  [SCSI] qla2xxx: Correct use-after-free issue in terminate_rport_io callback.
  [SCSI] qla2xxx: Correct EH bus-reset handling.
  [SCSI] qla2xxx: Proper clean-up of BSG requests when request times out.
  [SCSI] qla2xxx: Initialize payload receive length in failure path of vendor commands
  [SCSI] fix duplicate removal on error path in scsi_sysfs_add_sdev
  [SCSI] fix refcounting bug in scsi_get_host_dev
  [SCSI] fix memory leak in scsi_report_lun_scan
  [SCSI] lpfc: correct PPC build failure
  [SCSI] raid_class: add raid1e
  [SCSI] mpt2sas: Do not call sas_is_tlr_enabled for RAID volumes.
  [SCSI] zfcp: Introduce header file for qdio structs and inline functions
  ...
2010-02-26 16:55:27 -08:00
Linus Torvalds 64d497f553 Merge git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6: (187 commits)
  sh: remove dead LED code for migo-r and ms7724se
  sh: ecovec build fix for CONFIG_I2C=n
  sh: ecovec r-standby support
  sh: ms7724se r-standby support
  sh: SH-Mobile R-standby register save/restore
  clocksource: Fix up a registration/IRQ race in the sh drivers.
  sh: ms7724: modify scan_timing for KEYSC
  sh: ms7724: Add sh_sir support
  sh: mach-ecovec24: Add sh_sir support
  sh: wire up SET/GET_UNALIGN_CTL.
  sh: allow alignment fault mode to be configured at kernel boot.
  sh: sh7724: Update FSI/SPU2 clock
  sh: always enable sh7724 vpu_clk and set to 166MHz on Ecovec
  sh: add sh7724 kick callback to clk_div4_table
  sh: introduce struct clk_div4_table
  sh: clock-cpg div4 set_rate() shift fix
  sh: Turn on speculative return for SH7785 and SH7786
  sh: Merge legacy and dynamic PMB modes.
  sh: Use uncached I/O helpers in PMB setup.
  sh: Provide uncached I/O helpers.
  ...
2010-02-26 16:54:27 -08:00
Linus Torvalds 37d4008484 Merge git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6: (31 commits)
  crypto: aes_generic - Fix checkpatch errors
  crypto: fcrypt - Fix checkpatch errors
  crypto: ecb - Fix checkpatch errors
  crypto: des_generic - Fix checkpatch errors
  crypto: deflate - Fix checkpatch errors
  crypto: crypto_null - Fix checkpatch errors
  crypto: cipher - Fix checkpatch errors
  crypto: crc32 - Fix checkpatch errors
  crypto: compress - Fix checkpatch errors
  crypto: cast6 - Fix checkpatch errors
  crypto: cast5 - Fix checkpatch errors
  crypto: camellia - Fix checkpatch errors
  crypto: authenc - Fix checkpatch errors
  crypto: api - Fix checkpatch errors
  crypto: anubis - Fix checkpatch errors
  crypto: algapi - Fix checkpatch errors
  crypto: blowfish - Fix checkpatch errors
  crypto: aead - Fix checkpatch errors
  crypto: ablkcipher - Fix checkpatch errors
  crypto: pcrypt - call the complete function on error
  ...
2010-02-26 16:50:02 -08:00
Michael Holzheu 73bfa5f2f7 [S390] Define new s390 ELF note sections in elf.h
S390 ELF core dump currently only contains the PSW, the general purpose
registers, the floating point registers and the access registers stored
in PRSTATUS/PRFPREG note sections.
For analyzing s390 kernel problems additional registers are important.
In order to be able to include these registers to a kernel ELF core dump,
this patch adds the following five new note sections to elf.h:

* NT_S390_TIMER:   S390 timer register
* NT_S390_TODCMP:  S390 TOD comparator register
* NT_S390_TODPREG: S390 TOD programmable register
* NT_S390_CTRS:    S390 control registers
* NT_S390_PREFIX:  S390 prefix register

The new note sections have been already defined and accepted in the upstream
binutils package.

Signed-off-by: Michael Holzheu <holzheu@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2010-02-26 22:37:33 +01:00
Alan Stern 6d19c009cc USB: implement non-tree resume ordering constraints for PCI host controllers
This patch (as1331) adds non-tree ordering constraints needed for
proper resume of PCI USB host controllers from hibernation.  The main
issue is that non-high-speed devices must not be resumed before the
high-speed root hub, because it is the ehci_bus_resume() routine which
takes care of handing the device connection over to the companion
controller.  If the device resume is attempted before the handover
then the device won't be found and it will be treated as though it had
disconnected.

The patch adds a new field to the usb_bus structure; for each
full/low-speed bus this field will contain a pointer to the companion
high-speed bus (if one exists).  It is used during normal device
resume; if the hs_companion pointer isn't NULL then we wait for the
root-hub device on the hs_companion bus.

A secondary issue is that an EHCI controlller shouldn't be resumed
before any of its companions.  On some machines I have observed
handovers failing if the companion controller is reinitialized after
the handover.  Thus, the EHCI resume routine must wait for the
companion controllers to be resumed.

The patch also fixes a small bug in usb_hcd_pci_probe(); an error path
jumps to the wrong label, causing a memory leak.

[rjw: Fixed compilation for CONFIG_PM_SLEEP unset.]

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Acked-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
2010-02-26 20:39:12 +01:00
Rafael J. Wysocki f8824cee40 PM: Allow device drivers to use dpm_wait()
There are some dependencies between devices (in particular, between
EHCI USB controllers and their OHCI/UHCI siblings) which are not
reflected by the structure of the device tree.  With synchronous
suspend and resume these dependencies are taken into accout
automatically, because the devices in question are always registered
in the right order, but to meet these constraints with asynchronous
suspend and resume the drivers of these devices will need to use
dpm_wait() in their suspend/resume routines, so introduce a helper
function allowing them to do that.

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
2010-02-26 20:39:11 +01:00
Rafael J. Wysocki 5a2eb8585f PM: Add facility for advanced testing of async suspend/resume
Add configuration switch CONFIG_PM_ADVANCED_DEBUG for compiling in
extra PM debugging/testing code allowing one to access some
PM-related attributes of devices from the user space via sysfs.

If CONFIG_PM_ADVANCED_DEBUG is set, add sysfs attribute power/async
for every device allowing the user space to access the device's
power.async_suspend flag and modify it, if desired.

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
2010-02-26 20:39:10 +01:00
Rafael J. Wysocki 5af84b8270 PM: Asynchronous suspend and resume of devices
Theoretically, the total time of system sleep transitions (suspend
to RAM, hibernation) can be reduced by running suspend and resume
callbacks of device drivers in parallel with each other.  However,
there are dependencies between devices such that we're not allowed
to suspend the parent of a device before suspending the device
itself.  Analogously, we're not allowed to resume a device before
resuming its parent.

The most straightforward way to take these dependencies into accout
is to start the async threads used for suspending and resuming
devices at the core level, so that async_schedule() is called for
each suspend and resume callback supposed to be executed
asynchronously.

For this purpose, introduce a new device flag, power.async_suspend,
used to mark the devices whose suspend and resume callbacks are to be
executed asynchronously (ie. in parallel with the main suspend/resume
thread and possibly in parallel with each other) and helper function
device_enable_async_suspend() allowing one to set power.async_suspend
for given device (power.async_suspend is unset by default for all
devices).  For each device with the power.async_suspend flag set the
PM core will use async_schedule() to execute its suspend and resume
callbacks.

The async threads started for different devices as a result of
calling async_schedule() are synchronized with each other and with
the main suspend/resume thread with the help of completions, in the
following way:
(1) There is a completion, power.completion, for each device object.
(2) Each device's completion is reset before calling async_schedule()
    for the device or, in the case of devices with the
    power.async_suspend flags unset, before executing the device's
    suspend and resume callbacks.
(3) During suspend, right before running the bus type, device type
    and device class suspend callbacks for the device, the PM core
    waits for the completions of all the device's children to be
    completed.
(4) During resume, right before running the bus type, device type and
    device class resume callbacks for the device, the PM core waits
    for the completion of the device's parent to be completed.
(5) The PM core completes power.completion for each device right
    after the bus type, device type and device class suspend (or
    resume) callbacks executed for the device have returned.

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
2010-02-26 20:39:09 +01:00
Rafael J. Wysocki 5382363917 PM / Runtime: Add sysfs switch for disabling device run-time PM
Add new device sysfs attribute, power/control, allowing the user
space to block the run-time power management of the devices.  If this
attribute is set to "on", the driver of the device won't be able to power
manage it at run time (without breaking the rules) and the device will
always be in the full power state (except when the entire system goes
into a sleep state).

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
2010-02-26 20:39:08 +01:00
Linus Torvalds 68c6b85984 Merge branch 'linux-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6
* 'linux-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6: (48 commits)
  x86/PCI: Prevent mmconfig memory corruption
  ACPI: Use GPE reference counting to support shared GPEs
  x86/PCI: use host bridge _CRS info by default on 2008 and newer machines
  PCI: augment bus resource table with a list
  PCI: add pci_bus_for_each_resource(), remove direct bus->resource[] refs
  PCI: read bridge windows before filling in subtractive decode resources
  PCI: split up pci_read_bridge_bases()
  PCIe PME: use pci_pcie_cap()
  PCI PM: Run-time callbacks for PCI bus type
  PCIe PME: use pci_is_pcie()
  PCI / ACPI / PM: Platform support for PCI PME wake-up
  ACPI / ACPICA: Multiple system notify handlers per device
  ACPI / PM: Add more run-time wake-up fields
  ACPI: Use GPE reference counting to support shared GPEs
  PCI PM: Make it possible to force using INTx for PCIe PME signaling
  PCI PM: PCIe PME root port service driver
  PCI PM: Add function for checking PME status of devices
  PCI: mark is_pcie obsolete
  PCI: set PCI_PREF_RANGE_TYPE_64 in pci_bridge_check_ranges
  PCI: pciehp: second try to get big range for pcie devices
  ...
2010-02-26 10:35:27 -08:00
Andy Walls dbb9de9bc1 V4L/DVB: tuner-types: Add Sony BTF-Pxn01Z tuner type used on GigaPocket cards
Sony makes custome tuners for its GigaPocket line of ivtv based capture
cards.  This adds an entry to the tuner-types list for such tuners.
Parameters are based on experiments by Eric Anderson <rico99@sbcglobal.net>.

Signed-off-by: Andy Walls <awalls@radix.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2010-02-26 15:11:07 -03:00
Murali Karicheri 85b848caf7 V4L/DVB: V4L - vpfe capture - vpss driver enhancements for DM365
Enhancements to support DM365 ISP5 and VPSS module configuration.
Also cleaned up the driver by removing redundant variables.

Reviewed-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Murali Karicheri <mkaricheri@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2010-02-26 15:11:06 -03:00
Murali Karicheri e8417683eb V4L/DVB: V4L - vpfe capture - header files for ISIF driver
This is the header file for ISIF driver on DM365.  ISIF driver is equivalent
to CCDC driver on DM355 and DM644x. This driver is tested for
YUV capture from TVP514x driver. This patch contains the header files required
for this driver.

Reviewed-by: Nori, Sekhar <nsekhar@ti.com>
Reviewed-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Murali Karicheri <mkaricheri@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2010-02-26 15:11:06 -03:00
Hans Verkuil 340dde817a V4L/DVB: saa7115: fix saa7111a support
When the saa7111 driver was merged into saa7115 several bugs were introduced,
in particular with the saa7111a support as is used in the mxb.c driver.
This patch fixes the saa7111a support. This was tested with the mxb driver.

Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2010-02-26 15:11:05 -03:00
Hans Verkuil cd7d9beb09 V4L/DVB: saa7146_vv: fix regression where v4l2_device was registered too late
v4l2_device_register needs to be called before the i2c subdevs are loaded.
However, it was called afterwards in the saa7146 driver. This caused an oops
when loading the mxb and hexium drivers. The vv_init function is now split
into two: one registers the v4l2_device, the other does the rest of the
initialization. The three drivers that depend on this have been updated to
call the new vv_devinit function.

Thanks to Michael Hunold for reporting this.

Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2010-02-26 15:11:05 -03:00
Franklin Meng 9a0a75a5ab V4L/DVB: Add an entry for Kworld 315U remote
Signed-off-by: Franklin Meng <fmeng2002@yahoo.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2010-02-26 15:11:02 -03:00
Santiago Nunez-Corrales d2da2611cc V4L/DVB: Definitions for TVP7002 in DM365
This patch provides the required definitions for the TVP7002 driver
in DM365.

Signed-off-by: Santiago Nunez-Corrales <santiago.nunez@ridgerun.com>
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2010-02-26 15:11:01 -03:00
Santiago Nunez-Corrales ff9118a516 V4L/DVB: Support for TVP7002 in v4l2 definitions
This patch provides required chip identification definitions
within v4l2. Included only definitions for TVP7002.

Signed-off-by: Santiago Nunez-Corrales <santiago.nunez@ridgerun.com>
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2010-02-26 15:11:01 -03:00
Guennadi Liakhovetski c9f6ef6986 soc-camera: add support for VIDIOC_S_PARM and VIDIOC_G_PARM ioctls
Just pass VIDIOC_S_PARM and VIDIOC_G_PARM down to host drivers. So far no
special handling in soc-camera core.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2010-02-26 15:11:00 -03:00
Kuninori Morimoto 3675c750cf soc-camera: ov772x: Modify buswidth control
This patch removes "buswidth" struct member, and sets the default buswidth
to the natively supported 10 bit. You can select 8 bit buswidth by new flag.
This patch also modify ap325rxa/migor setup.c

Signed-off-by: Kuninori Morimoto <morimoto.kuninori@renesas.com>
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2010-02-26 15:11:00 -03:00
Guennadi Liakhovetski 906b101886 tw9910: use TABs for indentation
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2010-02-26 15:10:59 -03:00
Richard Röjfors d44d1f3bfa V4L/DVB: radio: Add radio-timb
This patch add supports for the radio system on the Intel Russellville board.

It's a In-Vehicle Infotainment board with a radio tuner and DSP.

This umbrella driver has the DSP and tuner as V4L2 subdevs and calls them
when needed.

Signed-off-by: Richard Röjfors <richard.rojfors@pelagicore.com>
Reviewed-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2010-02-26 15:10:56 -03:00
Richard Röjfors ee4b9dbb83 V4L/DVB: radio: add support for SAA7706H Car Radio DSP
Initial support for the SAA7706H Car Radio DSP.

It is a I2C device and currently the mute control is supported.

When the device is unmuted it is brought out of reset and initiated using
the proposed intialisation sequence.

When muted the DSP is brought into reset state.

[akpm@linux-foundation.org: include delay.h]

Signed-off-by: Richard Röjfors <richard.rojfors@pelagicore.com>
Cc: Douglas Schilling Landgraf <dougsland@gmail.com>
Cc: Hans Verkuil <hverkuil@xs4all.nl>
Cc: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2010-02-26 15:10:52 -03:00
Magnus Alm ca39d84d43 V4L/DVB: em28xx: fix for "Leadtek winfast tv usbii deluxe"
fix Video/Sound support "Leadtek winfast tv usbii deluxe".

Now, it is working Stereo, IR, Radio, TV, Svideo and Composite.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2010-02-26 15:10:51 -03:00
Andy Walls 3ccc646b56 V4L/DVB: cx25840, v4l2-subdev, ivtv, pvrusb2: Fix ivtv/cx25840 tinny audio
This change attempts to fix the ivtv tinny audio problem by keeping digitizer
to encoder audio clocks running, while disabling the video clocks as needed to
avoid unpredictable PCI bus hangs.

To accomplish this, for the cx25840 module enabling of audio streaming had
to be separated from enabling video streaming, requiring an additional
v4l2_subdev_audio_op and calls to this new op in the pvrusb2 and ivtv drivers.

The cx231xx and cx23885 driver use the cx25840 module for affecting only
video on s_stream calls, so those drivers needed no change.

The CX23418 hardware does not exhibit either the tinny audio problem nor the PCI
bus hang, so the cx18 driver did not need corresponding changes.

CX2341[56] based cards that are not using the CX2584x family of chips
do not seem to be affected by the tinny audio problem, and this change should
not affect how they are configured. It will delay their first capture by
starting by another 300 msec though.

Many thanks go to Argus <pthorn-ivtvd@styx2002.no-ip.org> and
Martin Dauskardt <martin.dauskardt@gmx.de> whose persistent testing and
investigation of this problem will hopefully fix this problem once and for all
for many ivtv users.

Reported-by: Martin Dauskardt <martin.dauskardt@gmx.de>
Reported-by: Argus <pthorn-ivtvd@styx2002.no-ip.org>
Signed-off-by: Andy Walls <awalls@radix.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2010-02-26 15:10:41 -03:00
Hans de Goede 54e8bc5d64 V4L/DVB (14003): gspca_cpai1: New gspca subdriver for CPIA CPiA version 1 cams
This new driver supports USB PIA CPiA version 1 cams, replacing the
old v4l1 driver.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2010-02-26 15:10:40 -03:00