@item flags.h
Macros that define a few bits in the 80@var{x}86 ``flags'' register.
-Probably of no interest. See @bibref{IA32-v1}, section 3.4.3, for more
-information.
+Probably of no interest. See @bibref{IA32-v1}, section 3.4.3, ``EFLAGS
+Register,'' for more information.
@end table
@menu
scheduler
with the @option{-mlfqs} kernel option. Passing this
option sets @code{enable_mlfqs}, declared in @file{threads/init.h}, to
-true.
+true when the options are parsed by @func{parse_options}, which happens
+midway through @func{main}.
When the 4.4@acronym{BSD} scheduler is enabled, threads no longer
directly control their own priorities. The @var{priority} argument to
@command{diffstat} program. The final row gives total lines inserted
and deleted; a changed line counts as both an insertion and a deletion.
+The reference solution represents just one possible solution. Many
+other solutions are also possible and many of those differ greatly from
+the reference solution. Some excellent solutions may not modify all the
+files modified by the reference solution, and some may modify files not
+modified by the reference solution.
+
@verbatim
devices/timer.c | 42 +++++-
threads/fixed-point.h | 120 ++++++++++++++++++
5 files changed, 440 insertions(+), 29 deletions(-)
@end verbatim
+@file{fixed-point.h} is a new file added by the reference solution.
+
@item How do I update the @file{Makefile}s when I add a new source file?
@anchor{Adding Source Files}
Priority donation only changes the priority of the donee
thread. The donor thread's priority is unchanged.
-Priority donation is not additive: if thread @var{A} (with priority 5) donates
-to thread @var{B} (with priority 3), then @var{B}'s new priority is 5, not 8.
+Priority donation is not additive: if thread @var{A} (with priority 3) donates
+to thread @var{B} (with priority 5), then @var{B}'s new priority is 3, not 8.
@item Can a thread's priority change while it is on the ready queue?