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Rev Age Author Path Log message Diff
4537 5625 d 18 h trochtova /branches/dd/ dd branch synchronized with trunk (revision 4536)  
4055 5724 d 15 h trochtova /branches/dd/ changes in trunk (rev 4054) merged into dd branch  
3022 6007 d 17 h decky /branches/dd/ device drivers branch  
2462 6365 d 8 h jermar /trunk/kernel/ Replace gcc-specific __FUNCTION__ with C99 __func__.
suncc's xregs=no%float can be used only on sparc64.
 
2310 6395 d 9 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.
 
2183 6427 d 12 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.
 
2109 6487 d 16 h jermar /trunk/kernel/generic/ Revert thread_interrupt_sleep() to waitq_interrupt_sleep().
I'd prefer that this, IMO, waitq related stuff stays together.
 
2106 6488 d 15 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.
 
2093 6493 d 11 h decky /trunk/kernel/ spinlock extern declaration macro  
2089 6494 d 15 h decky /trunk/ huge type system cleanup
remove cyclical type dependencies across multiple header files
many minor coding style fixes
 
2085 6500 d 14 h decky /trunk/kernel/ typedef elimination  
2071 6505 d 8 h jermar /trunk/ (c) versus (C)  
1888 6630 d 11 h jermar /trunk/ C99 compliant header guards (hopefully) everywhere in the kernel.
Formatting and indentation changes.
Small improvements in sparc64.
 
1787 6695 d 10 h decky / move kernel/trunk, uspace/trunk and boot/trunk to trunk/kernel, trunk/uspace and trunk/boot  
1780 6702 d 11 h jermar /kernel/trunk/ Replace old __u?? types with respective C99 variants (e.g. uint32_t, int64_t, uintptr_t etc.).  
1702 6723 d 14 h cejka /kernel/trunk/ Kernel doxygen comments updated.  
1583 6731 d 17 h jermar /kernel/trunk/generic/ Make ktaskclnp call ipc_cleanup and futex_cleanup.  
1502 6734 d 16 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
 
1460 6736 d 16 h jermar /kernel/trunk/generic/ Reference counting for futexes.  
1416 6742 d 18 h jermar /kernel/trunk/generic/ Make implementation of condition variables compliant with their definition.
Signal operation must become a no-op if there is no thread in the wait operation.
Remove condvar_trywait() which has no meaning after this change.
 
1380 6747 d 9 h jermar /kernel/trunk/ Turn address space lock, address space area lock and
page_ht_lock into mutexes.
 
1375 6748 d 16 h jermar /kernel/trunk/generic/ Fix race in condition variables.  
1156 6788 d 14 h jermar /kernel/trunk/generic/ Sleeping in a wait queue can be now interrupted with
waitq_interrupt_sleep().
 
1139 6798 d 10 h jermar /kernel/trunk/generic/include/ Fix comments.  
1117 6805 d 7 h jermar /kernel/trunk/generic/ Improved futexes. (kernel part)  
1109 6806 d 6 h jermar /kernel/trunk/ Basic futex. Prototype implementation.  
1104 6806 d 11 h jermar /kernel/trunk/ Define atomic_t only once in atomic.h
Change the encapsulated counter type to long so that it supports negative values as well.
 
1100 6808 d 8 h palkovsky /kernel/trunk/ Cleanup of spinlocks, now compiles both ia32 and amd64 with
and without DEBUG_SPINLOCKS. Made spinlocks inline.
Moved syscall_handler to generic (it was identical for ia32,amd64 & mips32).
Made slightly faster syscall for ia32.
Made better interrupt routines for ia32.
Allow not saving non-scratch registers during interrupt on ia32,amd64,mips32.
Aligned interrupt handlers on ia32,amd64, this should prevent problems
with different instruction lengths.
 
788 6851 d 10 h jermar /kernel/trunk/ Move list and fifo data types to adt/.  
625 6903 d 12 h palkovsky /kernel/trunk/ We are now almost -Wall clean.
- redefined atomic_t
- deleted many, many unused variables
- some minor code cleanups found using compiler warning.
 
623 6903 d 18 h jermar /kernel/trunk/ Add SPINLOCK_DECLARE and SPINLOCK_INITIALIZE macros.
SPINLOCK_DECLARE is to be used instead of direct spinlock_t declarations
in dynamically allocated structures on which spinlock_initialize() is called after
their creation.
SPINLOCK_INITIALIZE is to be used instead of direct spinlock_t declarations
of global spinlocks. It declares and initializes the spinlock.
Moreover, both macros are empty on UP so that -Wall warnings about unused structures
get supressed.
 
557 6911 d 15 h jermar /kernel/trunk/ Add comments describing locking rules for some locks.
Cleanup.
 
553 6912 d 6 h palkovsky /kernel/trunk/generic/include/synch/ Fix of compiling without SMP.  
552 6912 d 6 h palkovsky /kernel/trunk/ Named spinlocks  
534 6914 d 9 h jermar / Rename HelenOS/SPARTAN to HelenOS/kernel again.  
532 6914 d 9 h jermar / Revert renaming of HelenOS/SPARTAN to HelenOS/kernel because of important pending patch.  
501 6926 d 13 h jermar / Rename HelenOS/SPARTAN to HelenOS/kernel.  
483 6934 d 9 h jermar /SPARTAN/trunk/ For now, each architecture must use its own -O switch (-O2 doesn't work for ia64, -O3 doesn't work for mips32).

New mips32 atomic_add() function.

Cleanup.
 
458 6940 d 16 h decky /SPARTAN/trunk/ make configuration variables usage consistent  
430 6947 d 6 h jermar /SPARTAN/trunk/ Move src/ and include/ to generic.