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Rev Age Author Path Log message Diff
4679 5580 d 3 h rimsky /branches/sparc/kernel/ Enhancing the way how even distribution of threads over processor cores is achieved.  
3798 5775 d 21 h rimsky /branches/sparc/kernel/ Implemented preemptible trap handler for sun4v for trapping from kernel (not userspace). Not properly tested/debugged yet. HelenOS now reaches the as_install_arch function (where it, of course, fails).  
3343 5927 d 3 h decky /branches/sparc/ add sparc branch  
3181 5986 d 9 h jermar /trunk/kernel/generic/src/ cstyle for kinit.c and scheduler.c  
3062 6004 d 5 h decky /trunk/kernel/generic/src/proc/ proper printf formatting  
2451 6369 d 0 h jermar /trunk/kernel/generic/ JoinMe -> Lingering  
2446 6372 d 4 h jermar /trunk/kernel/generic/ More efficient and simpler task termination.

Based on the assumption, that after its creation, only the task itself can create more threads for itself,
the last thread with userspace context to execute thread_exit() will perform futex and IPC cleanup. When
the task has no threads, it is destroyed. Both the cleanup and destruction is controlled by reference
counting.

As for userspace threads, even though there could be a global garbage collector for joining threads, it is
much simpler if the uinit thread detaches itself before switching to userspace.

task_kill() is now an idempotent operation. It just instructs the threads within a task to exit.

Change in the name of a thread state: Undead -> JoinMe.		  
2310 6397 d 1 h jermar /trunk/kernel/generic/ Cleanup the waitq_wakeup() interface.
Replace numeric constants (i.e. 0)
and boolean constants (i.e. false) with
more readable WAKEUP_FIRST. Also change the
type of the second argument of waitq_wakeup()
to a newly introduced type wakeup_mode_t.

Fix behaviour of waitq_wakeup() in case
that WAKEUP_ALL semantics is required
but no threads are sleeping in the wait
queue. This is a similar fix to that of
Jan Hudecek committed in the RCU branch,
but, IMHO, is more straightforward and
also doesn't eat up previous missed
wakeups.		  
2285 6409 d 9 h jermar /trunk/kernel/generic/src/proc/ Formatting and indentation fixes.  
2216 6427 d 0 h decky /trunk/ make thread ID 64 bit (task ID is 64 bit already)
cleanup thread syscalls		  
2183 6429 d 4 h jermar /trunk/kernel/generic/ Continue to de-oversynchronize the kernel.
- replace as->refcount with an atomic counter; accesses to this
reference counter are not to be done when the as->lock mutex is held;
this gets us rid of mutex_lock_active();

Remove the possibility of a deadlock between TLB shootdown and asidlock.
- get rid of mutex_lock_active() on as->lock
- when locking the asidlock spinlock, always do it conditionally and with
preemption disabled; in the unsuccessful case, enable interrupts and try again
- there should be no deadlock between TLB shootdown and the as->lock mutexes
- PLEASE REVIEW !!!

Add DEADLOCK_PROBE's to places where we have spinlock_trylock() loops.		  
2118 6488 d 5 h decky /trunk/kernel/generic/src/ explicit typecast, fix signed/unsigned comparison  
2089 6496 d 6 h decky /trunk/ huge type system cleanup
remove cyclical type dependencies across multiple header files
many minor coding style fixes		  
2087 6497 d 2 h jermar /trunk/kernel/ Indentaion and formatting changes even Martin will like :-)  
2071 6506 d 23 h jermar /trunk/ (c) versus (C)  
2068 6514 d 7 h jermar /trunk/kernel/ Formatting and indentation fixes.  
2067 6517 d 5 h jermar /trunk/kernel/ More formatting changes.  
2040 6541 d 6 h decky /trunk/kernel/generic/src/proc/ add forgotten btree_remove()  
2030 6542 d 8 h decky /trunk/kernel/ thread CPU cycles accounting  
1888 6632 d 3 h jermar /trunk/ C99 compliant header guards (hopefully) everywhere in the kernel.
Formatting and indentation changes.
Small improvements in sparc64.		  
1882 6633 d 7 h jermar /trunk/kernel/ Support for sparc64 FPU context.  
1854 6648 d 9 h jermar /trunk/kernel/ Define architecture-specific thread sub-constructors and sub-destructors on all architectures.
Define the THREAD_FLAG_USPACE which means that the thread runs in user space.
The forementioned changes allow for allocating of user window buffer on sparc64
threads that execute in userspace.

A lot of formatting and indentation fixes.		  
1787 6697 d 1 h decky / move kernel/trunk, uspace/trunk and boot/trunk to trunk/kernel, trunk/uspace and trunk/boot  
1780 6704 d 3 h jermar /kernel/trunk/ Replace old __u?? types with respective C99 variants (e.g. uint32_t, int64_t, uintptr_t etc.).  
1757 6718 d 7 h jermar /kernel/trunk/ Cleanup of comments.  
1708 6722 d 9 h jermar /kernel/trunk/ Fix some broken doxygen comments.  
1705 6724 d 8 h cejka /kernel/trunk/ Added file with modules definitions and descriptions.
We are able to change modules order and their description in one place.		  
1702 6725 d 5 h cejka /kernel/trunk/ Kernel doxygen comments updated.  
1576 6734 d 0 h jermar /kernel/trunk/ Make use of thread_join_timeout() and thread_detach() in kernel.

Improved comments in slab.h.		  
1571 6734 d 3 h jermar /kernel/trunk/generic/ thread_join_timeout() and thread_detach() implementation.
Needs more thorough testing.		  
1380 6749 d 0 h jermar /kernel/trunk/ Turn address space lock, address space area lock and
page_ht_lock into mutexes.		  
1264 6768 d 7 h jermar /kernel/trunk/generic/ Improve Doxygen-comments.  
1248 6772 d 3 h jermar /kernel/trunk/ Add some @file doxygen comments and improve already existing comments.  
1229 6775 d 7 h jermar /kernel/trunk/ Remove the outdated TODO file.
Improve doxygen comments here and there.		  
1221 6776 d 21 h decky /kernel/trunk/ printf-related and other code cleanup  
1196 6783 d 7 h cejka /kernel/trunk/ Printf ported back from uspace to kernel.
Printf calls changed to match new conventions.		  
1187 6786 d 2 h jermar /kernel/trunk/ Cleanup pm.c and pm.h code on ia32 and amd64.
Add before_task_runs() and before_task_runs_arch() for each architecture.
Add ia32 and amd64 code to ensure I/O Permission Bitmap update.		  
1115 6807 d 8 h jermar /kernel/trunk/generic/src/proc/ Fix kcpulb() to change state of the migrated thread to Entering so that thread_ready() won't panic() on violated assertion.
Make print out of threads and tasks more dense again.		  
1104 6808 d 2 h jermar /kernel/trunk/ Define atomic_t only once in atomic.h
Change the encapsulated counter type to long so that it supports negative values as well.		  
1086 6811 d 21 h palkovsky /kernel/trunk/generic/ Untested better IPC functions.
* There is some bug in MIPS, unpredicatbly sometimes the thread gets mapped
different frame for stack.