Merge branches 'tracing/ftrace', 'tracing/ring-buffer' and 'tracing/urgent' into tracing/core

space, and might cause programs to fail unexpectedly.

To change the alignment trap behavior, simply echo a number into

/proc/sys/debug/alignment.  The number is made up from various bits:

/proc/cpu/alignment.  The number is made up from various bits:

bit		behavior when set

---		-----------------

	int cpu;

	/* Increment the counters */

	on_each_cpu(test_each, NULL, 0, 1);

	on_each_cpu(test_each, NULL, 1);

	/* Read all the counters */

	printk("Counters read from CPU %d\n", smp_processor_id());

	for_each_online_cpu(cpu) {

Then you must load the gadget serial driver.  To load it as an

ACM device (recommended for interoperability), do this:

  modprobe g_serial use_acm=1

  modprobe g_serial

To load it as a vendor specific bulk in/out device, do this:

  modprobe g_serial

  modprobe g_serial use_acm=0

This will also automatically load the underlying gadget peripheral

controller driver.  This must be done each time you reboot the gadget

These files can be read as binary data.  The binary data consists

of first the device descriptor, then the descriptors for each

configuration of the device.  That information is also shown in

text form by the /proc/bus/usb/devices file, described later.

configuration of the device.  Multi-byte fields in the device and

configuration descriptors, but not other descriptors, are converted

to host endianness by the kernel.  This information is also shown

in text form by the /proc/bus/usb/devices file, described later.

These files may also be used to write user-level drivers for the USB

devices.  You would open the /proc/bus/usb/BBB/DDD file read/write,

Verify that bus sockets are present.

# ls /sys/kernel/debug/usbmon

0s  0t  0u  1s  1t  1u  2s  2t  2u  3s  3t  3u  4s  4t  4u

0s  0u  1s  1t  1u  2s  2t  2u  3s  3t  3u  4s  4t  4u

#

Now you can choose to either use the sockets numbered '0' (to capture packets on

all buses), and skip to step #3, or find the bus used by your device with step #2.

Now you can choose to either use the socket '0u' (to capture packets on all

buses), and skip to step #3, or find the bus used by your device with step #2.

This allows to filter away annoying devices that talk continuously.

2. Find which bus connects to the desired device

Here is the list of words, from left to right:

- URB Tag. This is used to identify URBs is normally a kernel mode address

 of the URB structure in hexadecimal.

- URB Tag. This is used to identify URBs, and is normally an in-kernel address

  of the URB structure in hexadecimal, but can be a sequence number or any

  other unique string, within reason.

- Timestamp in microseconds, a decimal number. The timestamp's resolution

  depends on available clock, and so it can be much worse than a microsecond