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Rev Age Author Path Log message Diff
2444 6216 d 19 h jermar /trunk/kernel/ First fixes for suncc support.
It is going to be a long way...
 
2441 6216 d 21 h decky /trunk/kernel/ fix ICC compilation  
2440 6216 d 21 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().
 
2310 6241 d 0 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.
 
2275 6258 d 0 h decky /trunk/kernel/generic/ add fancy uptime kconsole command  
2268 6260 d 0 h jermar /trunk/kernel/generic/ Document and assert proper usage of THREAD_FLAG_WIRED.
Original patch by Jan Hudecek.
 
2227 6269 d 12 h decky /trunk/kernel/ start shutdown infrastructure  
2218 6270 d 19 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 6270 d 23 h decky /trunk/ make thread ID 64 bit (task ID is 64 bit already)
cleanup thread syscalls
 
2208 6271 d 1 h decky /trunk/kernel/generic/ use spinlock only on console output, not other print functions
cleanup
 
2187 6272 d 6 h decky /trunk/kernel/generic/ add syscall for getting current thread ID  
2183 6273 d 3 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 6277 d 20 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.
 
2142 6281 d 4 h jermar /trunk/kernel/generic/include/mm/ Remove out of date comment.  
2128 6324 d 23 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.
 
2126 6325 d 20 h decky /trunk/kernel/ small cleanup, more work coming  
2125 6325 d 23 h decky /trunk/ experimental support for Objective C
(disabled by default)
 
2124 6326 d 0 h decky /trunk/kernel/generic/ implement simple realloc()  
2122 6332 d 3 h decky /trunk/kernel/generic/ explicit typecast, fix signed/unsigned comparison  
2120 6332 d 3 h decky /trunk/kernel/generic/include/syscall/ specify syscall handler arguments  

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