| Rev |
Age |
Author |
Path |
Log message |
Diff |
| 2557 |
6116 d 0 h |
jermar |
/trunk/kernel/generic/src/ipc/ |
Enable forwarding of IPC_M_AS_AREA_SEND, IPC_M_AS_AREA_RECV, IPC_M_DATA_SEND
calls. In order to prevent the forwarder from cloberring the call data (i.e.
source and destination address, and size) by treating these three methods as
immutable on forward. This feature is experimental, but has huge benefits in
that it can significantly reduce the amount of data sharing (the middle man need
not modify its address space mappings) or the amount of data copying (the middle
man need not receive the data from the sender and then resend them to the next
recipient). As a result, it can reduce N such calls for a communication channel
with N tasks along the way to 1 such call. |
|
| 2556 |
6116 d 2 h |
jermar |
/trunk/kernel/generic/ |
Rename as_get_size() to as_area_get_size() and add a doxygen comment. |
|
| 2494 |
6195 d 16 h |
jermar |
/trunk/kernel/generic/ |
Implement a new mechanism for copying data between two address spaces based on
IPC. New system method IPC_M_DATA_SEND is introduced. The implementation is
generic and does not make use of any possible architecture optimizations such as
direct copy from one address space to another. |
|
| 2472 |
6219 d 17 h |
jermar |
/trunk/kernel/generic/src/ipc/ |
Some left-over stuff from the last commit (IPC cleanup and improved
comments.) |
|
| 2471 |
6219 d 17 h |
jermar |
/trunk/ |
Greatly improve comments in the IPC layer.
Now I think I finally start to understand our IPC internals :-) |
|
| 2359 |
6250 d 2 h |
jermar |
/trunk/ |
Improve comments for the IPC subsystem.
Fix formatting and indentation. |
|
| 2310 |
6260 d 18 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. |
|
| 2216 |
6290 d 16 h |
decky |
/trunk/ |
make thread ID 64 bit (task ID is 64 bit already)
cleanup thread syscalls |
|
| 2183 |
6292 d 20 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. |
|
| 2098 |
6358 d 18 h |
decky |
/trunk/kernel/generic/ |
avoid conflict with potential keyword |
|
| 2071 |
6370 d 16 h |
jermar |
/trunk/ |
(c) versus (C) |
|
| 2064 |
6384 d 15 h |
vana |
/trunk/ |
SIMICS added as a simulator kernel runs on |
|
| 1933 |
6462 d 15 h |
jermar |
/trunk/kernel/generic/ |
Implement efficient IPC notification cleanup. |
|
| 1932 |
6462 d 16 h |
jermar |
/trunk/kernel/ |
Do not copy notification config out of the IRQ structure.
Add the notify member, that toggles notifications on and off instead.
This is good for preventing other tasks from registering the notification
while the notification config is stored outside the IRQ structure.
It should also help to implement the cleanup code. |
|
| 1923 |
6463 d 16 h |
jermar |
/trunk/ |
Replace the old IRQ dispatcher and IPC notifier with new implementation.
Note that all architectures except for sparc64 are now broken
and don't even compile. |
|
| 1888 |
6495 d 19 h |
jermar |
/trunk/ |
C99 compliant header guards (hopefully) everywhere in the kernel.
Formatting and indentation changes.
Small improvements in sparc64. |
|
| 1875 |
6502 d 17 h |
jermar |
/trunk/ |
sparc64 work.
- Changes to enable userspace keyboard drivers.
- Fix z8530 initialization (i.e. clear any pending Tx interrupts).
- Experimental support for framebuffers with inverted colors. |
|
| 1787 |
6560 d 18 h |
decky |
/ |
move kernel/trunk, uspace/trunk and boot/trunk to trunk/kernel, trunk/uspace and trunk/boot |
|
| 1780 |
6567 d 19 h |
jermar |
/kernel/trunk/ |
Replace old __u?? types with respective C99 variants (e.g. uint32_t, int64_t, uintptr_t etc.). |
|
| 1757 |
6582 d 0 h |
jermar |
/kernel/trunk/ |
Cleanup of comments. |
|
| 1735 |
6584 d 2 h |
decky |
/kernel/trunk/ |
make kernel prints case consistent |
|
| 1708 |
6586 d 1 h |
jermar |
/kernel/trunk/ |
Fix some broken doxygen comments. |
|
| 1705 |
6588 d 1 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 |
6588 d 22 h |
cejka |
/kernel/trunk/ |
Kernel doxygen comments updated. |
|
| 1698 |
6589 d 17 h |
jermar |
/kernel/trunk/generic/src/ipc/ |
Improve comments.
Replace 'process' with 'task'. |
|
| 1693 |
6590 d 20 h |
palkovsky |
/kernel/trunk/generic/ |
Modified ipc/irq to be able to pass up to 3 arguments to userspace. |
|
| 1669 |
6593 d 19 h |
palkovsky |
/kernel/trunk/generic/src/ipc/ |
Small consitency ipc update. |
|
| 1628 |
6595 d 13 h |
decky |
/kernel/trunk/ |
fixes |
|
| 1625 |
6595 d 13 h |
decky |
/kernel/trunk/ |
ppc32 uspace keyboard support |
|
| 1595 |
6596 d 5 h |
palkovsky |
/kernel/trunk/ |
Added kernel circular buffer klog.
Added automatic killing of tasks raising inappropriate exceptions.
TODO: Fix vsnprintf return value(and behaviour according to specs) and remove workaround in klog. |
|
| 1591 |
6596 d 14 h |
palkovsky |
/kernel/trunk/generic/ |
Small updates to ipc. |
|
| 1582 |
6597 d 2 h |
palkovsky |
/kernel/trunk/generic/ |
Modified ipc_cleanup. |
|
| 1573 |
6597 d 19 h |
palkovsky |
/kernel/trunk/generic/ |
Renamed some things in IPC to be consistent.
Added ipc reporting to kconsole. |
|
| 1568 |
6597 d 21 h |
palkovsky |
/kernel/trunk/generic/ |
Slightly remodelled ipc hangups to facilitate correct cleanup.
Doc updates for frame allocator. |
|
| 1507 |
6599 d 22 h |
vana |
/kernel/trunk/ |
IA64 uspace keyboard kernel part |
|
| 1502 |
6600 d 0 h |
jermar |
/kernel/trunk/ |
Replace nonblocking argument of waitq_sleep_timeout with flags that specify mode of operation.
Now a flag can be used to specify interruptible sleep.
Modify waitq_interrupt_sleep() to only interrupt threads that used this flag.
O |
|
| 1461 |
6601 d 22 h |
palkovsky |
/kernel/trunk/generic/ |
Slightly changed semantics of AS_AREA_SEND/RECV. |
|
| 1434 |
6604 d 18 h |
palkovsky |
/kernel/trunk/ |
Added 'realtime' clock interface.
Added some asm macros as memory barriers.
Added drift computing for mips platform. |
|
| 1428 |
6605 d 14 h |
palkovsky |
/kernel/trunk/generic/ |
Added 256K slab, so that AMD can boot (until ELF loader is fixed).
Added AS_AREA_RECV so that the caller can receive AS_AREA. |
|
| 1417 |
6607 d 15 h |
jermar |
/kernel/trunk/generic/ |
Modify as_area_share() to accept destination area flags bitmask from the sender
(i.e. the sender can limit access mode to the shared area for the recipient).
Modify IPC_M_AS_AREA_SEND code to support this. Arguments for sender: arg1=as_area,
arg2=size, arg3=flags_mask.
The mechanism seems to work, but the page fault handlers need to be altered to
distinguish between faults under different access modes. |
|