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Rev Age Author Path Log message Diff
2440 6275 d 20 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 6299 d 23 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 6316 d 23 h decky /trunk/kernel/generic/ add fancy uptime kconsole command  
2268 6318 d 23 h jermar /trunk/kernel/generic/ Document and assert proper usage of THREAD_FLAG_WIRED.
Original patch by Jan Hudecek.
 
2227 6328 d 12 h decky /trunk/kernel/ start shutdown infrastructure  
2218 6329 d 18 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 6329 d 22 h decky /trunk/ make thread ID 64 bit (task ID is 64 bit already)
cleanup thread syscalls
 
2208 6330 d 0 h decky /trunk/kernel/generic/ use spinlock only on console output, not other print functions
cleanup
 
2187 6331 d 5 h decky /trunk/kernel/generic/ add syscall for getting current thread ID  
2183 6332 d 2 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 6336 d 19 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 6340 d 3 h jermar /trunk/kernel/generic/include/mm/ Remove out of date comment.  
2128 6383 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 6384 d 19 h decky /trunk/kernel/ small cleanup, more work coming  
2125 6384 d 22 h decky /trunk/ experimental support for Objective C
(disabled by default)
 
2124 6385 d 0 h decky /trunk/kernel/generic/ implement simple realloc()  
2122 6391 d 2 h decky /trunk/kernel/generic/ explicit typecast, fix signed/unsigned comparison  
2120 6391 d 3 h decky /trunk/kernel/generic/include/syscall/ specify syscall handler arguments  
2109 6392 d 6 h jermar /trunk/kernel/generic/ Revert thread_interrupt_sleep() to waitq_interrupt_sleep().
I'd prefer that this, IMO, waitq related stuff stays together.
 
2107 6392 d 20 h jermar /trunk/ When clock() is called by an external interrupt dispatched by the IRQ dispatcher,
no spinlock can be held or the kernel will not be preemptive. This fixes Ticket #24.

Formating and indentation fixes.
 
2106 6393 d 4 h jermar /trunk/kernel/ Merge as_t structure into one and leave the differring parts in as_genarch_t.

Indentation and formatting changes in header files.
 
2105 6397 d 5 h decky /trunk/kernel/ move ipc structures to ipc.h  
2103 6397 d 22 h decky /trunk/kernel/generic/include/ move timeout_t to timeout.h
move other helper types to thread.h
 
2098 6398 d 0 h decky /trunk/kernel/generic/ avoid conflict with potential keyword  
2096 6398 d 0 h decky /trunk/kernel/generic/include/ move thread_t to thread.h  
2094 6398 d 0 h decky /trunk/kernel/generic/ avoid conflict with potential keyword  
2093 6398 d 0 h decky /trunk/kernel/ spinlock extern declaration macro  
2092 6398 d 1 h decky /trunk/kernel/generic/include/ move cpu_t to cpu.h  
2090 6399 d 1 h decky /trunk/kernel/generic/include/proc/ cleanup garbage  
2089 6399 d 4 h decky /trunk/ huge type system cleanup
remove cyclical type dependencies across multiple header files
many minor coding style fixes
 
2085 6405 d 3 h decky /trunk/kernel/ typedef elimination  
2083 6405 d 4 h decky /trunk/kernel/ typedef elimination  
2081 6405 d 5 h decky /trunk/kernel/generic/include/ another typedefs to anonymous structs  
2080 6405 d 5 h decky /trunk/kernel/generic/include/ another typedef to anonymous enum  
2079 6405 d 23 h decky /trunk/kernel/ remove some typedefs in favor of anonymous structures  
2071 6409 d 21 h jermar /trunk/ (c) versus (C)  
2059 6433 d 6 h jermar /trunk/kernel/generic/ Improve indentation and formatting.  
2050 6439 d 8 h decky /trunk/kernel/ benchmarking with statistics (initial)  
2048 6441 d 23 h jermar /trunk/ Formatting and indentation changes.  
2042 6444 d 1 h decky /trunk/kernel/ introduce uncounted threads, whose accounting doesn't affect accumulated task accounting
run tests in kconsole thread again