The stack trace API does not record if the stack is not on the current
task's stack. That is, if the stack is the interrupt stack or NMI stack,
the output does not show. Also, the size of those stacks are not
consistent with the size of the thread stack, this makes the calculation
of the stack size usually bogus.

This all confuses the stack tracer. I unfortunately do not have time to
fix all these problems, but this patch does record the worst stack when
the stack pointer is on the tasks stack (instead of bogus numbers).

The patch simply returns if the stack pointer is not on the task's stack.
Signed-off-by: NSteven Rostedt <srostedt@redhat.com>
Signed-off-by: NIngo Molnar <mingo@elte.hu>

To avoid further confusion between the ftrace infrastructure and the
function tracer. This patch renames the "ftrace" function tracer
to "function".

Now in available_tracers, instead of "ftrace" there will be "function".

This makes more sense, since people will not know exactly what the
"ftrace" tracer does.
Signed-off-by: NSteven Rostedt <srostedt@redhat.com>
Signed-off-by: NIngo Molnar <mingo@elte.hu>

Due to confusion between the ftrace infrastructure and the gcc profiling
tracer "ftrace", this patch renames the config options from FTRACE to
FUNCTION_TRACER.  The other two names that are offspring from FTRACE
DYNAMIC_FTRACE and FTRACE_MCOUNT_RECORD will stay the same.

This patch was generated mostly by script, and partially by hand.
Signed-off-by: NSteven Rostedt <srostedt@redhat.com>
Signed-off-by: NIngo Molnar <mingo@elte.hu>

A lot of tracers have HAVE_FTRACE as a dependent config where it
really should not. The HAVE_FTRACE is a misnomer (soon to be fixed)
and describes if the architecture has the function tracer (mcount)
implemented. The ftrace infrastructure is implemented in all archs.
Signed-off-by: NSteven Rostedt <srostedt@redhat.com>
Signed-off-by: NIngo Molnar <mingo@elte.hu>

The x86 architecture uses a static recording of mcount caller locations
and is not affected by this patch.

For architectures still using the dynamic ftrace daemon, this patch is
critical. It removes the race between the recording of a function that
calls mcount, the unloading of a module, and the ftrace daemon updating
the call sites.

This patch adds the releasing of the hash functions that the daemon uses
to update the mcount call sites. When a module is unloaded, not only
are the replaced call site table update, but now so is the hash recorded
functions that the ftrace daemon will use.

Again, architectures that implement MCOUNT_RECORD are not affected by
this (which currently only x86 has).
Signed-off-by: NSteven Rostedt <srostedt@redhat.com>
Signed-off-by: NIngo Molnar <mingo@elte.hu>

In ftrace, logic is defined in the WARN_ON_ONCE, which can become a
nop with some configs. This patch fixes it.
Signed-off-by: NSteven Rostedt <srostedt@redhat.com>
Signed-off-by: NIngo Molnar <mingo@elte.hu>

Conflicts:
	init/main.c
	kernel/module.c
	scripts/bootgraph.pl

* git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb-2.6: (94 commits)
  USB: remove err() macro from more usb drivers
  USB: remove err() macro from usb misc drivers
  USB: remove err() macro from usb core code
  USB: remove err() macro from usb class drivers
  USB: remove use of err() in drivers/usb/serial
  USB: remove info() macro from usb mtd drivers
  USB: remove info() macro from usb input drivers
  USB: remove info() macro from usb network drivers
  USB: remove info() macro from remaining usb drivers
  USB: remove info() macro from usb/misc drivers
  USB: remove info() macro from usb/serial drivers
  USB: remove warn macro from HID core
  USB: remove warn() macro from usb drivers
  USB: remove warn() macro from usb net drivers
  USB: remove warn() macro from usb media drivers
  USB: remove warn() macro from usb input drivers
  usb/fsl_qe_udc: clear data toggle on clear halt request
  usb/fsl_qe_udc: fix response to get status request
  fsl_usb2_udc: Fix oops on probe failure.
  fsl_usb2_udc: Add a wmb before priming endpoint.
  ...

* 'drm-next' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6: (44 commits)
  drm/i915: fix ioremap of a user address for non-root (CVE-2008-3831)
  drm: make CONFIG_DRM depend on CONFIG_SHMEM.
  radeon: fix PCI bus mastering support enables.
  radeon: add RS400 family support.
  drm/radeon: add support for RS740 IGP chipsets.
  i915: GM45 has GM965-style MCH setup.
  i915: Don't run retire work handler while suspended
  i915: Map status page cached for chips with GTT-based HWS location.
  i915: Fix up ring initialization to cover G45 oddities
  i915: Use non-reserved status page index for breadcrumb
  drm: Increment dev_priv->irq_received so i915_gem_interrupts count works.
  drm: kill drm_device->irq
  drm: wbinvd is cache coherent.
  i915: add missing return in error path.
  i915: fixup permissions on gem ioctls.
  drm: Clean up many sparse warnings in i915.
  drm: Use ioremap_wc in i915_driver instead of ioremap, since we always want WC.
  drm: G33-class hardware has a newer 965-style MCH (no DCC register).
  drm: Avoid oops in GEM execbuffers with bad arguments.
  DRM: Return -EBADF on bad object in flink, and return curent name if it exists.
  ...

* 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-2.6: (95 commits)
  V4L/DVB (9296): Patch to remove warning message during cx88-dvb compilation
  V4L/DVB (9294): gspca: Add a stop sequence in t613.
  V4L/DVB (9293): gspca: Separate and fix the sensor dependant sequences in t613.
  V4L/DVB (9292): gspca: Call the control setting functions at init time in t613.
  V4L/DVB (9291): gspca: Do not set the white balance temperature by default in t613.
  V4L/DVB (9290): gspca: Adjust the sensor init sequences in t613.
  V4L/DVB (9289): gspca: Other sensor identified as om6802 in t613.
  V4L/DVB (9288): gspca: Write to the USB device and not USB interface in t613.
  V4L/DVB (9287): gspca: Change the name of the multi bytes write function in t613.
  V4L/DVB (9286): gspca: Compilation problem of gspca.c and the kernel version.
  V4L/DVB (9283): Correct typo and enable setting the gain on the mt9m111 sensor
  V4L/DVB (9282): Properly iterate the urbs when destroying them.
  V4L/DVB (9281): gspca: Add hflip and vflip to the po1030 sensor
  V4L/DVB (9280): gspca: Use the gspca debug macros
  V4L/DVB (9279): gspca: Correct some copyright headers
  V4L/DVB (9278): gspca: Remove the m5602_debug variable
  V4L/DVB (9277): gspca: propagate an error in m5602_start_transfer()
  V4L/DVB (9276): videobuf-dvb: two functions are now static
  V4L/DVB (9275): dvb: input data pointer of cx24116_writeregN() should be const
  V4L/DVB (9274): Remove spurious messages and turn into debug.
  ...

* 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4:
  ext4: Remove automatic enabling of the HUGE_FILE feature flag
  ext4: Replace hackish ext4_mb_poll_new_transaction with commit callback
  ext4: Update Documentation/filesystems/ext4.txt
  ext4: Remove unused mount options: nomballoc, mballoc, nocheck
  ext4: Remove compile warnings when building w/o CONFIG_PROC_FS
  ext4: Add missing newlines to printk messages
  ext4: Fix file fragmentation during large file write.
  vfs: Add no_nrwrite_index_update writeback control flag
  vfs: Remove the range_cont writeback mode.
  ext4: Use tag dirty lookup during mpage_da_submit_io
  ext4: let the block device know when unused blocks can be discarded
  ext4: Don't reuse released data blocks until transaction commits
  ext4: Use an rbtree for tracking blocks freed during transaction.
  ext4: Do mballoc init before doing filesystem recovery
  ext4: Free ext4_prealloc_space using kmem_cache_free
  ext4: Fix Kconfig typo for ext4dev
  ext4: Remove an old reference to ext4dev in Makefile comment

USB should not be having it's own printk macros, so remove err() and
use the system-wide standard of dev_err() wherever possible.  In the
few places that will not work out, use a basic printk().
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

USB should not be having it's own printk macros, so remove err() and
use the system-wide standard of dev_err() wherever possible.  In the
few places that will not work out, use a basic printk().
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

USB should not be having it's own printk macros, so remove err() and
use the system-wide standard of dev_err() wherever possible.  In the
few places that will not work out, use a basic printk().
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

USB should not be having it's own printk macros, so remove err() and
use the system-wide standard of dev_err() wherever possible.  In the
few places that will not work out, use a basic printk().
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

err() is going away, so switch to dev_err() or printk() if it's really
needed.
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

USB should not be having it's own printk macros, so remove info() and
use the system-wide standard of dev_info() wherever possible.
Acked-by: NDavid Woodhouse <dwmw2@infradead.org>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

USB should not be having it's own printk macros, so remove info() and
use the system-wide standard of dev_info() wherever possible.
Acked-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

USB should not be having it's own printk macros, so remove info() and
use the system-wide standard of dev_info() wherever possible.

Cc: Jeff Garzik <jgarzik@pobox.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

USB should not be having it's own printk macros, so remove info() and
use the system-wide standard of dev_info() wherever possible.  In the
few places that will not work out, use a basic printk().

Clean up the remaining usages of this in the drivers/usb/ directory.
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

USB should not be having it's own printk macros, so remove info() and
use the system-wide standard of dev_info() wherever possible.
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

USB should not be having it's own printk macros, so remove info() and
use the system-wide standard of dev_info() wherever possible.
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

There were two stragglers that got missed in the last merge of the HID tree that forgot to change the warn() calls to dev_warn().  This patch fixes them up.
Acked-by: NJiri Kosina <jkosina@suse.cz>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

USB should not be having it's own printk macros, so remove warn() and
use the system-wide standard of dev_warn() wherever possible.  In the
few places that will not work out, use a basic printk().
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

USB should not be having it's own printk macros, so remove warn() and
use the system-wide standard of dev_warn() wherever possible.  In the
few places that will not work out, use a basic printk().

Cc: Jeff Garzik <jgarzik@pobox.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

USB should not be having it's own printk macros, so remove warn() and
use the system-wide standard of dev_warn() wherever possible.  In the
few places that will not work out, use a basic printk().

Cc: Mauro Carvalho Chehab <mchehab@infradead.org>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

USB should not be having it's own printk macros, so remove warn() and
use the system-wide standard of dev_warn() wherever possible.  In the
few places that will not work out, use a basic printk().

Cc: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

Fix to comply with USB spec.
Signed-off-by: NLi Yang <leoli@freescale.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

The original code didn't respond correctly to get status request on
device and endpoint.  Although normal operations can work without the
fix.  It is not compliant with USB spec chapter9 and fails USBCV ch9
tests.  The patch fix this and a few style/typo problems.
Signed-off-by: NLi Yang <leoli@freescale.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

In some circumstances when fsl_udc_probe fails udc_controller is freed but
the pointer remains non-NULL. fsl_udc_remove will then try and teardown
the partly initialized and freed controller structure resulting in an oops.
This patch ensures udc_controller is either NULL or fully initialized after
fsl_udc_probe.
Signed-off-by: NWill Newton <will.newton@gmail.com>
Acked-by: NLi Yang <leoli@freescale.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

Add a wmb to fsl_queue_td before priming the endpoint. This ensures that the
modifications to the QH are seen by the hardware.

Added comment as suggested by Felipe Balbi.
Signed-off-by: NWill Newton <will.newton@gmail.com>
Acked-by: NLi Yang <leoli@freescale.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

fsl_queue_td always returns 0. Make it void and remove checks for non-zero
return in callers.
Signed-off-by: NWill Newton <will.newton@gmail.com>
Acked-by: NLi Yang <leoli@freescale.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

Uninline udc_reset_ep_queue and remove it's unused return value.
Signed-off-by: NWill Newton <will.newton@gmail.com>
Acked-by: NLi Yang <leoli@freescale.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

Rename the arguments of the fsl_writel macro to match their use.
Remove a couple of unnecessary prototypes.
Signed-off-by: NWill Newton <will.newton@gmail.com>
Acked-by: NLi Yang <leoli@freescale.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

Move spinlock initialization earlier so we can turn shared irq handler
debugging on safely.
Signed-off-by: NWill Newton <will.newton@gmail.com>
Acked-by: NLi Yang <leoli@freescale.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

Missing spaces were causing the /proc debugging output to be rather
unreadable.
Signed-off-by: NWill Newton <will.newton@gmail.com>
Acked-by: NLi Yang <leoli@freescale.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

VDBG always outputs a trailing \n.
Signed-off-by: NWill Newton <will.newton@gmail.com>
Acked-by: NLi Yang <leoli@freescale.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

Fix some sparse "integer used as NULL pointer" warnings.
Remove some unnecessary volatiles and static initialization.
Remove some unused struct members and reorder to improve packing.
Remove a few unneeded includes.
Signed-off-by: NWill Newton <will.newton@gmail.com>
Acked-by: NLi Yang <leoli@freescale.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

Remove check for udc == NULL in dr_controller_setup. All callers of
this function have already dereferenced udc at some point.
Signed-off-by: NWill Newton <will.newton@gmail.com>
Acked-by: NLi Yang <leoli@freescale.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

Make dr_ep_setup function static as it's never used outside this file.
Signed-off-by: NWill Newton <will.newton@gmail.com>
Acked-by: NLi Yang <leoli@freescale.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>