Remove $FreeBSD$: one-line sh pattern

Remove /^\s*#[#!]?\s*\$FreeBSD\$.*$\n/

schedgraph.py: port to Python 3

The change does not preserve compatibility with Python 2.7.

MFC after: 4 weeks
Differential Revision: https://reviews.freebsd.org/D33626

MFH r289384-r293170

Sponsored by: The FreeBSD Foundation

Catch up with head (r291075).

Use print as a function for Python 3 [PEP 3105]

Import print_function from the __future__ module
to activate this for Python 2. This works as far back as Python 2.6.0a2:
https://docs.python.org/

Use print as a function for Python 3 [PEP 3105]

Import print_function from the __future__ module
to activate this for Python 2. This works as far back as Python 2.6.0a2:
https://docs.python.org/2/library/__future__.html

[PEP 3105] https://www.python.org/dev/peps/pep-3105/

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Use 'in' instead of 'has_key()' for testing dictionary membership.

In PEP 0290, has_key() was deprecated in Python 2.2 and higher:
https://www.python.org/dev/peps/pep-0290/#testing-dictionary-member

Use 'in' instead of 'has_key()' for testing dictionary membership.

In PEP 0290, has_key() was deprecated in Python 2.2 and higher:
https://www.python.org/dev/peps/pep-0290/#testing-dictionary-membership
https://docs.python.org/2.2/whatsnew/node4.html

In Python 3, dict.has_key() was removed:
https://docs.python.org/3.0/whatsnew/3.0.html#builtins

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Reintegrate head revisions r273096-r277147

Sponsored by: The FreeBSD Foundation

Merge from head@274682

Sync to HEAD@r274095.

Add a new thread state "spinning" to schedgraph and add tracepoints at the
start and stop of spinning waits in lock primitives.

Bind Ctrl-Q as a global hotkey to exit. Bind Ctrl-W as a hotkey to close
dialogs.

Reintegrate head@r273095

Sponsored by: The FreeBSD Foundation

Merge HEAD@r272944.

IFC @r272887

Sync to HEAD@r272825.

Add schedgraph traces for callout handlers. Specifically, a callwheel logs
a running event each time it executes a callout function. The event
includes the function pointer, argument, and whether o

Add schedgraph traces for callout handlers. Specifically, a callwheel logs
a running event each time it executes a callout function. The event
includes the function pointer, argument, and whether or not it was run from
hardware interrupt context. The callwheel is marked idle when each handler
completes. This effectively logs the duration of each callout routine in
the graph.

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IFC @r272481

Sync to HEAD@r272516.

Reintegrate head@r272414

Sponsored by: The FreeBSD Foundation

Explicitly return None for negative event indices. Prior to this,
eventat(-1) would return the next-to-last event causing the back button
to cycle back to the end of an event source instead of stopp

Explicitly return None for negative event indices. Prior to this,
eventat(-1) would return the next-to-last event causing the back button
to cycle back to the end of an event source instead of stopping at the
start.

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Merge from head up to r188941 (last revision before the USB stack switch)

Update the projects tree to a newer FreeBSD current.

- Update my copyright.
- Print human readable time as a float with two digits of precision. Use
ns now as well since clock periods are well into the hundreds of
picoseconds now.
- Show the a

- Update my copyright.
- Print human readable time as a float with two digits of precision. Use
ns now as well since clock periods are well into the hundreds of
picoseconds now.
- Show the average duration in the stats frame. This is often more useful
than total duration.

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- Permit timestamps to be as far as 2048 ticks apart before we complain
about invalid timestamps. Nehalem CPUs seem to be synchronized but only
within a fraction of a microsecond.
- Make the

- Permit timestamps to be as far as 2048 ticks apart before we complain
about invalid timestamps. Nehalem CPUs seem to be synchronized but only
within a fraction of a microsecond.
- Make the Counter code more flexible to poor timestamps. In general we
now complain a lot but render as much as we can.
- Change the scaler behavior so it works better with very long and very
short traces. We now set the maximum scale such that it properly
displays the entire file by default and doesn't permit zooming out
beyond the file. This improves other awkward navigation behavior.
The interval is now set very small which can't be achieved by simply
dragging the mouse. Clicking to the left of or right of the scaler bar
will produce increments of a single, very small, interval now.

Sponsored by: Nokia

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- Add summary information to the title once the file is parsed rather than
printing it to the terminal. Now only parse errors go to the terminal.
- Speedup drawing by raising and lowering tags o

- Add summary information to the title once the file is parsed rather than
printing it to the terminal. Now only parse errors go to the terminal.
- Speedup drawing by raising and lowering tags only once everything has
been drawn. Surprisingly, it now takes a little longer to parse than
it does to draw.
- Parameterize the layout with X_ and Y_ defines that determine the sizes
of various things.
- Remove unnecessary tags.

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