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Jan Kiszka authored Apr 01, 2015 and Philippe Gerum committed Jun 18, 2015

This avoids filling up "git status" with tons of autotools files that
are now locally maintained. git recommends to maintain .gitignore inside
the repository, users expect it to happen this way, so let's add it.
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>

At this chance, also recognizes "-" as stdout for -g option.

cobalt_read_hrclock() returns the current TSC value as defined by the
platform. This is a Cobalt-specific service, which is aimed at
measuring elapsed time accurately, with low overhead. The output is
the current raw count of ticks, as reported by the hrclock device used
by Cobalt for timing.

Such value is NOT converted to nanoseconds before return.
cobalt_ticks_to_ns() and cobalt_ticks_to_ns_rounded() are available
for converting raw tick counts to nanoseconds.

Application code should stick with clock_gettime(CLOCK_MONOTONIC, ...)
for portability.

This clock source is guaranteed continuous, monotonically increasing.

Jan Kiszka authored Jun 09, 2015 and Philippe Gerum committed Jun 14, 2015

xnsynch_requeue_sleeper is valid for threads that block on owner-free
synch objects. There is a check that catches this case and skips the
owner-related part of the function. Thus remove the XENO_BUG_ON.
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>

Copperplate-based applications may create significantly more mutexes
and condvars internally than pure POSIX ones. Increase the default
size suggested for the UMM areas those objects are allocated from.