| Rev |
Age |
Author |
Path |
Log message |
Diff |
| 2471 |
6350 d 11 h |
jermar |
/trunk/ |
Greatly improve comments in the IPC layer.
Now I think I finally start to understand our IPC internals :-) |
|
| 2470 |
6354 d 9 h |
jermar |
/trunk/ |
Fix a double-free recently introduced in revision r2436.
Add a comment clarifying the life-cycle of the kernel_uarg structure.
Comment out the freeing of userspace thread stack while still running on it.
This should be fixed by implementing userspace version of thread_join(). |
|
| 2467 |
6354 d 13 h |
jermar |
/trunk/ |
Improve comments for arch-specific implementations of hierarchical
4-level page tables. Improve formatting. |
|
| 2465 |
6359 d 16 h |
jermar |
/trunk/ |
Merge arm32 into trunk. |
|
| 2462 |
6361 d 10 h |
jermar |
/trunk/kernel/ |
Replace gcc-specific __FUNCTION__ with C99 __func__.
suncc's xregs=no%float can be used only on sparc64. |
|
| 2451 |
6363 d 11 h |
jermar |
/trunk/kernel/generic/ |
JoinMe -> Lingering |
|
| 2447 |
6366 d 15 h |
jermar |
/trunk/kernel/generic/src/main/ |
Split accidently joined lines. |
|
| 2446 |
6366 d 15 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. |
|
| 2445 |
6366 d 16 h |
decky |
/trunk/ |
initial merge of branches/fs
(not finished, huge cleanup is needed) |
|
| 2441 |
6367 d 9 h |
decky |
/trunk/kernel/ |
fix ICC compilation |
|
| 2440 |
6367 d 9 h |
jermar |
/trunk/kernel/generic/ |
Fix the problem with sys_thread_create() by splitting the create and attach functionality of
thread_create(). Now it is possible to specify a flag that will cause thread_create() to only allocate and
initialize the thread structure. A call to thread_attach() will make the thread visible to the system.
This arrangement makes it easier to undo creation of a thread in case of a failure in sys_thread_create(). |
|
| 2436 |
6368 d 11 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. |
|
| 2359 |
6380 d 20 h |
jermar |
/trunk/ |
Improve comments for the IPC subsystem.
Fix formatting and indentation. |
|
| 2319 |
6388 d 20 h |
decky |
/trunk/kernel/generic/src/console/ |
run mcall only on active CPUs |
|
| 2310 |
6391 d 12 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 |
6403 d 19 h |
jermar |
/trunk/kernel/generic/src/proc/ |
Formatting and indentation fixes. |
|
| 2275 |
6408 d 12 h |
decky |
/trunk/kernel/generic/ |
add fancy uptime kconsole command |
|
| 2272 |
6409 d 12 h |
jermar |
/trunk/kernel/ |
Indentation and formatting fixes. |
|
| 2268 |
6410 d 11 h |
jermar |
/trunk/kernel/generic/ |
Document and assert proper usage of THREAD_FLAG_WIRED.
Original patch by Jan Hudecek. |
|
| 2229 |
6419 d 17 h |
jermar |
/trunk/ |
Revert some of the changes introduced in revision 2209.
I think it is not correct to remove serialization of pseudo threads in printf_core.c.
With thread-level futex serialization, several pseudo threads running in one thread could easily deadlock
the task.
Add a dedicated futex serialization to thread1.c test only. |
|
| 2227 |
6420 d 0 h |
decky |
/trunk/kernel/ |
start shutdown infrastructure |
|
| 2224 |
6420 d 7 h |
decky |
/trunk/kernel/generic/src/console/ |
detach joined thread |
|
| 2223 |
6420 d 7 h |
decky |
/trunk/kernel/generic/src/ |
add mcall0 command (calling a function on each CPU) |
|
| 2222 |
6420 d 10 h |
decky |
/trunk/kernel/ |
map kernel pages explicitly as writable (this solves compatibility issues with Intel Core 2)
make VESA framebuffer initialization more robust |
|
| 2218 |
6421 d 7 h |
decky |
/trunk/kernel/ |
support the possibility to send EOI or Interrupt Acknowledgement
prior to processing the interrupt
(this is essential on some architectures to prevent preemption deadlock) |
|
| 2216 |
6421 d 10 h |
decky |
/trunk/ |
make thread ID 64 bit (task ID is 64 bit already)
cleanup thread syscalls |
|
| 2211 |
6421 d 12 h |
decky |
/trunk/kernel/generic/src/synch/ |
reflect the renaming of printflock to printf_lock |
|
| 2208 |
6421 d 13 h |
decky |
/trunk/kernel/generic/ |
use spinlock only on console output, not other print functions
cleanup |
|
| 2187 |
6422 d 18 h |
decky |
/trunk/kernel/generic/ |
add syscall for getting current thread ID |
|
| 2185 |
6422 d 18 h |
decky |
/trunk/ |
rename ipcc to tester |
|
| 2184 |
6422 d 20 h |
decky |
/trunk/kernel/generic/src/lib/ |
add zetta (sextillion) prefix
make constants explicitly unsigned |
|
| 2183 |
6423 d 14 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. |
|
| 2170 |
6428 d 8 h |
jermar |
/trunk/kernel/ |
Simplify synchronization in as_switch().
The function was oversynchronized, which
was causing deadlocks on the address
space mutex.
Now, address spaces can only be switched
when the asidlock is held. This also protects
stealing of ASIDs. No other synchronization
is necessary. |
|
| 2141 |
6432 d 7 h |
jermar |
/trunk/ |
The Ultimate Solution To Illegal Virtual Aliases.
It is better to avoid them completely than to fight them.
Switch the sparc64 port to 16K pages. The TLBs and TSBs
continue to operate with 8K pages only. Page tables and
other generic parts operate with 16K pages.
Because the MMU doesn't support 16K directly, each 16K
page is emulated by a pair of 8K pages. With 16K pages,
illegal aliases cannot be created in 16K D-cache. |
|
| 2134 |
6433 d 11 h |
jermar |
/trunk/kernel/ |
Reworked handling of illegal virtual aliases caused by frame reuse.
We moved the incomplete handling from backend's frame method to
backend's page_fault method. The page_fault method is the one that
can create an illegal alias if it writes the userspace frame using
kernel address with a different page color than the page to which is
this frame mapped in userspace. When we detect this, we do D-cache
shootdown on all processors (!!!).
If we add code that accesses userspace memory from kernel address
space, we will have to check for illegal virtual aliases at all such
places.
I tested this on a 4-way simulated E6500 and a real-world Ultra 5,
which has unfortunatelly only one processor.
This solves ticket #26. |
|
| 2133 |
6433 d 11 h |
jermar |
/trunk/kernel/generic/src/mm/ |
Coding style and indentation fixes. |
|
| 2132 |
6434 d 18 h |
jermar |
/trunk/kernel/generic/src/mm/ |
Fix coding style in the address space area backends. |
|
| 2128 |
6475 d 11 h |
jermar |
/trunk/ |
Add arm32 architecture. The 32 suffix is used to specify that 16-bit Thumb
instructions are not used. The arm32 code is mostly composed of placeholders
that need to be replaced by real implementation. So far, the arm32 tree
only compiles. If run under GXEmul simulator, an infinit loop at the
kernel entry point will be entered. |
|
| 2127 |
6475 d 21 h |
decky |
/trunk/kernel/generic/src/lib/ |
add forgotten implementation |
|
| 2126 |
6476 d 8 h |
decky |
/trunk/kernel/ |
small cleanup, more work coming |
|