Commit Graph

13 Commits

Author SHA1 Message Date
Bananymous 833642d405 Kernel: ISR will now crash userspace process instead of panicing kernel 2023-05-28 20:53:10 +03:00
Bananymous 92daa831d1 Kernel: ISRs now print pid and tid 2023-05-06 00:10:15 +03:00
Bananymous fdb4eb6042 Kernel: Move kmalloc and MMU to Memory directory 2023-04-18 10:18:15 +03:00
Bananymous c936aac777 Kernel: Optimize scheduler idling
Now after each interrupt we will ask the scheduler to reschedule
if the current thread is the idle thread. This allows semaphore
unblocking to be practically instant when there is only one thread
executing.

Now disk reading is back to ~3 MB/s for single threaded process
2023-04-03 01:51:05 +03:00
Bananymous 8b8e3cbbf0 Kernel/Userspace: Start initial work on userspace and syscalls 2023-03-13 15:32:46 +02:00
Bananymous c9ea22f5e2 Kernel: IDT now confirms that it allocated succesfully 2023-02-22 21:48:40 +02:00
Bananymous d9c05b7378 Kernel: rewrite the whole kmalloc (again)
Performance of the old kmalloc implementation was terrible.
We now use fixed-width linked list allocations for sizes <= 60 bytes.
This is much faster than variable size allocation.

We don't use bitmap scanning anymore since it was probably the slow
part. Instead we use headers that tell allocations size and aligment.

I removed the kmalloc_eternal, even though it was very fast, there is
not really any need for it, since the only place it was used in was IDT.

These changes allowed my psf (font) parsing to go from ~500 ms to ~20 ms.
(coming soon :D)
2023-02-22 16:32:50 +02:00
Bananymous 1bd8b0fe5c Kernel: Sleep now actually sleeps and allows idling 2023-02-19 18:52:25 +02:00
Bananymous 9b8de5025a All: rename every function from UpperCamelCase to snake_case
This was a mess since I didn't know which to use but now I decided
to go with snake_case :)
2023-02-01 21:05:44 +02:00
Bananymous 6dc22b7251 Kernel: Add actual register values to x86_64 kernel panic
Very hackish implementation, but we now get actual registers at the
time of the interrupt happening
2023-01-30 18:52:38 +02:00
Bananymous 589f338357 Kernel: Cleanup IDT register dump inline assembly 2023-01-26 02:57:14 +02:00
Bananymous e87026f01d Kernel: I have no idea what this commit does
I had committed a change in IDT but reverted it now.

This propably only adds a spurious interrupt detection to common cpp
interrupt handler?
2023-01-26 02:55:37 +02:00
Bananymous b315fdc27f Kernel: Finally managed to get 64-bit working
I had weird problems with interrupts but everything should work now
2023-01-25 19:19:28 +02:00