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Rev Age Author Path Log message Diff
4055 5640 d 22 h trochtova /branches/dd/ changes in trunk (rev 4054) merged into dd branch  
3022 5924 d 0 h decky /branches/dd/ device drivers branch  
2802 5978 d 0 h jermar /trunk/kernel/generic/ Fix initialization of answerbox->task in ipc_answerbox_init.
Contributed by Jiri Svoboda.
 
2745 6015 d 23 h decky /trunk/ code cleanup (mostly signed/unsigned)
allow extra compiler warnings
 
2712 6041 d 21 h decky /trunk/kernel/ prettyprint output  
2632 6103 d 10 h decky /trunk/kernel/generic/src/proc/ try to kill the tasks fewer times by introducing a delay in iterations  
2504 6228 d 16 h jermar /trunk/kernel/generic/ Give the AVL tree walkers the possibility to take an argument.
Each walker is now supposed to return a bool value to support walk termination.

Switch over from the tasks_btree B+tree to tasks_tree AVL tree.
This makes the fix for ticket #48 complete.
 
2446 6286 d 19 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.
 
2436 6288 d 15 h jermar /trunk/ Fix two memory leaks.

In kernel, kernel_uarg structure needs to be deallocated when a thread
with userspace context is destroyed.

In userspace, the return value of the SYS_THREAD_CREATE must be checked
for error conditions and in case of error, uarg and stack must be freed
up.
 
2227 6340 d 5 h decky /trunk/kernel/ start shutdown infrastructure  
2216 6341 d 15 h decky /trunk/ make thread ID 64 bit (task ID is 64 bit already)
cleanup thread syscalls
 
2183 6343 d 19 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 6402 d 20 h decky /trunk/kernel/generic/src/ explicit typecast, fix signed/unsigned comparison  
2109 6403 d 23 h jermar /trunk/kernel/generic/ Revert thread_interrupt_sleep() to waitq_interrupt_sleep().
I'd prefer that this, IMO, waitq related stuff stays together.
 
2089 6410 d 22 h decky /trunk/ huge type system cleanup
remove cyclical type dependencies across multiple header files
many minor coding style fixes
 
2087 6411 d 18 h jermar /trunk/kernel/ Indentaion and formatting changes even Martin will like :-)  
2071 6421 d 15 h jermar /trunk/ (c) versus (C)  
2050 6451 d 1 h decky /trunk/kernel/ benchmarking with statistics (initial)  
2048 6453 d 16 h jermar /trunk/ Formatting and indentation changes.  
2042 6455 d 18 h decky /trunk/kernel/ introduce uncounted threads, whose accounting doesn't affect accumulated task accounting
run tests in kconsole thread again
 
2041 6455 d 20 h decky /trunk/kernel/generic/src/proc/ revert 2040  
2040 6455 d 21 h decky /trunk/kernel/generic/src/proc/ add forgotten btree_remove()  
2039 6455 d 22 h decky /trunk/kernel/generic/ accumulate task accounting, run tests as separate kernel task  
2035 6456 d 20 h decky /trunk/kernel/generic/src/ more fancy kconsole output  
2000 6472 d 0 h decky /trunk/kernel/ move files to more proper locations  
1880 6550 d 14 h jermar /trunk/ Small improvements here and there.  
1864 6557 d 11 h jermar /trunk/ sparc64 update.
- Prototype userspace layer implementation that
at least relates to sparc64 and compiles cleanly.
- Fixes for kernel's preemptible_handler and code
related to running userspace.
- Enable userspace. Several dozen instructions
are now run in userspace! We are pretty near
the userspace milestone for sparc64.
 
1839 6586 d 19 h decky /trunk/kernel/generic/ finish security context isolation  
1820 6594 d 12 h decky /trunk/kernel/generic/ initial security context support  
1787 6611 d 17 h decky / move kernel/trunk, uspace/trunk and boot/trunk to trunk/kernel, trunk/uspace and trunk/boot  
1780 6618 d 18 h jermar /kernel/trunk/ Replace old __u?? types with respective C99 variants (e.g. uint32_t, int64_t, uintptr_t etc.).  
1757 6632 d 23 h jermar /kernel/trunk/ Cleanup of comments.  
1735 6635 d 0 h decky /kernel/trunk/ make kernel prints case consistent  
1702 6639 d 21 h cejka /kernel/trunk/ Kernel doxygen comments updated.  
1687 6642 d 21 h jermar /kernel/trunk/generic/src/proc/ Fix double thread_join() in ktaskgc.
In thread_create(), lock TASK with interrupts disabled again.
thread_join_timeout() can use ordinary waitq_sleep_timeout().
 
1684 6643 d 1 h jermar /kernel/trunk/ #ifdef more debugging printf()'s.  
1676 6643 d 22 h jermar /kernel/trunk/generic/src/proc/ Forgotten interrupts_restore().  
1661 6645 d 2 h jermar /kernel/trunk/generic/ Collect Undead threads while waiting to join uinit.
Rename ktaskkill to ktaskgc.
 
1636 6646 d 11 h jermar /kernel/trunk/ Move comment.

Do TLB shootdown also when allocating new ASID.
 
1600 6647 d 2 h jermar /kernel/trunk/generic/src/proc/ Prevent task killing of kernel by returning EPERM on such a request.