rbraun/x15.git - The X15 microkernel

Age	Commit message (Collapse)	Author
2019-08-16	Remove useless comment	Richard Braun

2019-08-16	Replace some barrier()s with local atomic fences	Richard Braun

2019-05-19	kern/sref: rework	Richard Braun
	Remove CPU registration, optimize manager weak-ups, replace the global review queue with local review queues. CPU registration and the global review queue were motivated by low power consumption, but considering how the kernel is evolving, this was likely overengineering.
2019-01-17	Replace "awaken" with "awoken"	Richard Braun
	See https://www.merriam-webster.com/words-at-play/usage-awaken-awoken-awakened.
2018-11-17	kern/thread: fix suspend on dead threads	Richard Braun

2018-11-05	kern/thread: implement suspend/resume operations	Agustina Arzille

2018-08-12	kern/thread: make thread-specific data optional	Richard Braun

2018-07-30	Rework assertive functions	Richard Braun
	Instead of combining assertions and checking into single functions, rework those into pure checking functions usable with assert(). Those functions were introduced because of warnings about unused functions/variables caused by an earlier implementation of assert().
2018-07-25	kern/{fmt,shell}: update from upstream	Richard Braun
	The shell module has been "objectified" and now supports multiple instances with shareable command sets.
2018-06-25	kern/perfmon: new module	Richard Braun

2018-06-25	kern/thread: new thread_cpu function	Richard Braun

2018-06-25	kern/thread: slightly rework thread state handling	Richard Braun

2018-05-14	kern/thread: make thread_create slightly more convenient	Richard Braun
	Don't require the caller to pass a pointer to the newly created thread.
2018-02-24	kern/{cbuf,fmt,hash,hlist,list,plist,rdxtree,shell,slist}: update from upstream	Richard Braun
	Note that this commit changes the order of some list operations without triggering warnings.
2018-02-24	New errno.h standard header	Richard Braun
	Use standard errno codes. This change also adds strerror to string.h.
2018-02-22	kern/spinlock: add ownership tracking as a debugging feature	Richard Braun

2018-02-20	kern/llsync: remove module	Richard Braun

2018-02-20	kern/rcu: new module	Richard Braun
	This module implements preemptible RCU.
2018-02-20	kern/thread: remove sref registration calls	Richard Braun
	The upcoming RCU implementation requires scalable reference counters to be usable in interrupt context, and in particular, in the periodic tick handler, when an idle thread may be running, and the local processor is not registered.
2018-02-12	kern/thread: minor changes	Richard Braun
	Make thread_runq_schedule() slightly more resilient by setting the next thread pointer to NULL after the context switch.
2018-01-30	Fix condition variable broadcasting	Richard Braun
	The broadcast implementation is based on an invalid assumption, namely that the first mutex_unlock call following condition_wait would be invoked on the same mutex. Fixing this while guarding against the thundering herd effect requires augmenting mutexes with a pointer to the condition variable they may be associated with. Since the size of mutexes is currently more important than broadcast scalability, the implementation is simplified into one which suffers from the thundering herd effect.
2018-01-29	Fix undefined behavior in conditional macro replacement	Richard Braun
	See C11 6.10.3 §11 : If there are sequences of preprocessing tokens within the list of arguments that would otherwise act as preprocessing directives, the behavior is undefined.
2018-01-10	kern/thread: minor name changes	Richard Braun
	Call the various thread-local nesting counters "levels".
2018-01-07	kern/thread: fix initialization race	Richard Braun

2017-12-03	Revert "Make assert have no side effects"	Richard Braun
	This reverts commit d18d0e85596f90e0bd597b33d58209d0b3973c95.
2017-09-21	Merge branch 'xbuild'	Richard Braun

2017-09-21	New build system	Richard Braun
	The new build system, called xbuild, is a minimalistic kbuild-like make-based build system, also using kconfig for scalable configurations.
2017-09-20	kern/thread: restore comment about thread destruction	Richard Braun

2017-09-07	Use accessors when referring to global kernel objects	Richard Braun
	The kernel_map/kernel_pmap/kernel_task/etc... names were reused as they were in the Mach source code. They've been a (mostly harmless) long-standing violation of the coding rules.
2017-09-07	kern/thread: fix thread stack guard selection	Richard Braun

2017-09-06	Use new thread_check_intr_context function consistently	Richard Braun

2017-09-05	x86/{pmap,tcb}: don't use tsd for the update oplist	Richard Braun

2017-09-02	Rework the build system	Richard Braun

2017-09-02	kern/thread: new preemption control macros	Richard Braun
	These new macros take care of disabling/restoring interrupts in the appropriate order.
2017-09-02	Make assert have no side effects	Richard Braun
	This makes sure symbols referenced by assert uses may not be generated if unused. The recently introduced __unused macro is used to suppress compiler warnings resulting from this change.
2017-08-31	kern/thread: fix atomic accesses to a thread's run queue	Richard Braun

2017-08-27	Add TODO entries	Richard Braun

2017-08-27	kern/thread: add the thread_delay function	Richard Braun

2017-08-27	kern/thread: implement timed sleeps	Richard Braun

2017-08-27	kern/clock: new module	Richard Braun

2017-08-25	kern/thread: add a stack debugging assertion on scheduling	Richard Braun

2017-08-23	kern/thread: really fix termination	Richard Braun
	Change the semantics of thread_join so that it not only waits for thread_exit but also for the last reference to be dropped.
2017-08-21	kern/thread: fix and improve termination	Richard Braun

2017-07-30	kern/thread: replace the reaper with deferred works	Richard Braun

2017-07-21	Merge branch 'adaptive_spinning'	Richard Braun

2017-07-21	kern/mutex: new adaptive spinning mutex implementation	Agustina Arzille

2017-07-13	kern/thread: fix thread stack guard support	Richard Braun
	Since the introduction of the kernel VM object, page referencing has become more strict, preventing the thread stack guard code to function. Work around the issue by keeping the physical pages at the stack boundaries.
2017-07-13	Switch to initialization operations	Richard Braun

2017-06-25	Use the C11 alignas and noreturn macros	Richard Braun

2017-06-25	Remove the param module	Richard Braun
	Move the page properties into the new x86/page module, and the virtual memory layout macros into the x86/pmap module.