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Rev Age Author Path Log message Diff
2319 6215 d 15 h decky /trunk/kernel/generic/src/console/ run mcall only on active CPUs  
2310 6218 d 7 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 6230 d 14 h jermar /trunk/kernel/generic/src/proc/ Formatting and indentation fixes.  
2275 6235 d 7 h decky /trunk/kernel/generic/ add fancy uptime kconsole command  
2272 6236 d 7 h jermar /trunk/kernel/ Indentation and formatting fixes.  
2268 6237 d 6 h jermar /trunk/kernel/generic/ Document and assert proper usage of THREAD_FLAG_WIRED.
Original patch by Jan Hudecek.
 
2229 6246 d 12 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 6246 d 19 h decky /trunk/kernel/ start shutdown infrastructure  
2224 6247 d 2 h decky /trunk/kernel/generic/src/console/ detach joined thread  
2223 6247 d 2 h decky /trunk/kernel/generic/src/ add mcall0 command (calling a function on each CPU)  
2222 6247 d 5 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 6248 d 2 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 6248 d 5 h decky /trunk/ make thread ID 64 bit (task ID is 64 bit already)
cleanup thread syscalls
 
2211 6248 d 7 h decky /trunk/kernel/generic/src/synch/ reflect the renaming of printflock to printf_lock  
2208 6248 d 8 h decky /trunk/kernel/generic/ use spinlock only on console output, not other print functions
cleanup
 
2187 6249 d 13 h decky /trunk/kernel/generic/ add syscall for getting current thread ID  
2185 6249 d 13 h decky /trunk/ rename ipcc to tester  
2184 6249 d 15 h decky /trunk/kernel/generic/src/lib/ add zetta (sextillion) prefix
make constants explicitly unsigned
 
2183 6250 d 9 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 6255 d 3 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.
 

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