Matthew Leach
50e5b0b2f5
waker: rescedule other CPUs when waking up other cores
...
When a waker sets a task's state to `Running` from `Sleeping`, send an
IPI to that CPU to force a reschedule preventing them from being stuck
in the idle task.
2025-12-25 21:10:40 +00:00
Matthew Leach
6ae237544d
interrupts: refactor interrupt manager and reduce locking
...
There is no need to store a seperate inner struct with the interrupt
manager, refactor that.
Also, reduce the amount of locking when servicing an interrupt,
currently we keep the whole interrupt manager locked when servicing an
interrupt. This should be kept unlocked while the ISR is called.
2025-12-25 21:07:28 +00:00
Matthew Leach
24932b48be
cpu-messenger, sched: migrae tasks, round-robin
...
Use a simple static atomicu32 to keep track of where to spawn the next
task. Then, if the task isn't on this CPU, migrate it with the
`CPUMessenger`.
2025-12-25 12:32:51 +00:00
ootinnyoo
8030cf0d8f
add readlink test in symlink test
2025-12-25 00:46:40 -08:00
ootinnyoo
70e81b39f4
add support for symlinks
2025-12-25 00:46:40 -08:00
Matthew Leach
69f50fef18
sched: fix futures race-condition
...
When a future returns `Poll::Pending`, there is a window where, if a
waker is called, prior to the sched code setting the task's state to
`Sleeping`, the wake-up could be lost. We get around this by
introducing a new state `Woken`.
A waker will set a `Running` task to this state. The sched code then
detects this and *does not* set the task's state to `Sleeping`, instead
it leaves it as running and attempts to re-schedule.
2025-12-24 18:44:41 -08:00
Matthew Leach
bd21276368
sched: don't bother with pointless state update
...
The caller of `switch_to_task` should have already set the task's state
to `Runnable` for it to be considered in this time slice. Ensure that is
the case with a debug_assert.
2025-12-24 18:44:41 -08:00
Matthew Leach
2e8871840d
sched: ensure task is running when re-running same task
...
When scheduling the same task to be run, ensure that the state is set to
`Running` as it will have been set to `Runnable` before entering this
function call.
2025-12-24 18:44:41 -08:00
Matthew Leach
6abdbbb6d5
sched: move last_run update into switch_to_task
2025-12-24 18:44:41 -08:00
Ashwin Naren
7122429a20
dispatch signals ( #85 )
2025-12-24 12:54:40 -08:00
someone
2a1bb1cdde
implement hardlinking ( #88 )
2025-12-24 09:43:12 -08:00
Matthew Leach
5259654e36
usertest: add test_clock_sleep ( #87 )
...
Add a test to ensure sleeping and clock getttime functions are correct.
2025-12-24 09:40:13 -08:00
Matthew Leach
efe34026fa
Merge pull request #81 from arihant2math/mutex-timeouts
2025-12-24 08:08:20 +00:00
Matthew Leach
1d25f0d292
apply fix
2025-12-24 00:02:29 -08:00
someone
877dc9bf2e
Implement sys_truncate ( #86 )
2025-12-23 22:08:16 -08:00
someone
3aef9a4e15
add chown/chmod ( #84 )
2025-12-23 15:19:25 -08:00
Ashwin Naren
c4f1d9acf5
support timeouts for futex
2025-12-23 13:08:37 -08:00
Ashwin Naren
888c099072
implement sys_sched_yield
2025-12-23 12:46:26 -08:00
Matthew Leach
88549fee5a
sys_set_tid_address: finish implementation
...
Now CLONE_CHILD_CLEARTID has been implemented properly, we can finish
the implementation of `sys_set_tid_address`.
2025-12-23 11:28:44 -08:00
Matthew Leach
91c40c92ae
usertest: add test_rust_mutex
...
Add a function to stress-test the kernels futex implementation.
2025-12-23 11:28:29 -08:00
Matthew Leach
6bada491b6
futex: check value while queue locked
...
Lock the futex queue when checking the value to ensure atomicity.
2025-12-23 10:21:30 -08:00
Matthew Leach
f7a02c6ccb
libkernel: wakerset: add contains_token
...
Add a way to check whether the wakerset contains a token.
2025-12-23 10:21:30 -08:00
Matthew Leach
957b28e8a7
uaccess: implement try_copy_from_user
...
Implement a new function, `try_copy_from_user` which will not sleep when
a fault occures, making it safe to be called while a spinlock has been
acquired.
2025-12-23 10:21:30 -08:00
Matthew Leach
ca787aa4c3
libkernel: waker_set: return whether a waker was woken
...
Make `wake_one()` return `true` indicating whether a waker was woken
from the set, `false` otherwise.
2025-12-23 10:21:30 -08:00
Ashwin Naren
78440f292b
update dependencies
2025-12-23 00:01:45 -08:00
Matthew Leach
8af3653e60
Merge pull request #76 from some100/master
2025-12-23 06:46:59 +00:00
ootinnyoo
8f00af7587
implement sys_fchdir
2025-12-22 18:34:22 -05:00
Matthew Leach
1dd1811f34
Merge pull request #75 from arihant2math/fix-thread-join
2025-12-22 17:36:48 +00:00
Ashwin Naren
2cb93c0891
address review
2025-12-22 02:06:11 -08:00
Ashwin Naren
8bf0a72bce
fix futex based thread joining
2025-12-21 17:02:19 -08:00
Matthew Leach
e77742e029
aarch64: syscalls: clone: fix arg order
...
The clone syscal on aarch64 is the following:
```
SYS_clone, flags, stack, ptid, tls, ctid
x8, x0, x1, x2, x3, x4
```
which is a different order than listed on the man page. Fix the ordering
in the aarch64 syscall dispatch code.
2025-12-21 16:13:15 -08:00
Matthew Leach
3273d6451e
clone: implement CLONE_SETTLS
...
Set the TLS pointer when `CLONE_SETTLS` is set in `sys_clone`.
2025-12-21 16:13:15 -08:00
Matthew Leach
12076c7ad2
usertest: add test_rust_thread
...
Add a simple thread spawn test.
2025-12-21 16:13:15 -08:00
Matthew Leach
a7ebe8e214
threading: fix clone to spawn threads
...
Fix issues identify in `sys_clone` logic to enable basic threading.
2025-12-21 16:13:15 -08:00
Matthew Leach
eb2369f621
Merge pull request #57 from arihant2math/futex
2025-12-21 13:30:40 +00:00
Matthew Leach
03a400d2bd
Merge pull request #72 from some100/master
2025-12-21 13:30:05 +00:00
Ashwin Naren
637874620b
address review
2025-12-21 01:56:33 -08:00
Ashwin Naren
73b9afc2f0
remove redundant rust mutex test
2025-12-21 01:44:30 -08:00
Ashwin Naren
f004824bbd
make clippy happy
2025-12-21 01:43:54 -08:00
Ashwin Naren
b7e8e9edcc
add note
2025-12-21 01:43:54 -08:00
Ashwin Naren
a6efc75686
final fixes
2025-12-21 01:43:54 -08:00
Ashwin Naren
d60e70e397
add another usertest
...
Conflicts:
usertest/src/main.rs
2025-12-21 01:43:54 -08:00
Ashwin Naren
93df6b0ebc
get data w/ spinlock
2025-12-21 01:43:54 -08:00
Ashwin Naren
cb6dbdf5bb
futex impl
2025-12-21 01:43:54 -08:00
Ashwin Naren
3fbb56098c
futex impl
...
# Conflicts:
# usertest/src/main.rs
2025-12-21 01:43:54 -08:00
Ashwin Naren
cd6d830ae9
Initial proc fs ( #70 )
2025-12-21 01:37:14 -08:00
ootinnyoo
237ab737df
implement sys_chroot
2025-12-20 19:06:07 -05:00
Ashwin Naren
35a6caa541
Implement sys_sysinfo ( #71 )
2025-12-20 15:42:08 -08:00
Ashwin Naren
b98a54b928
Stub sys_madvise ( #67 )
2025-12-19 15:28:43 -08:00
Ashwin Naren
fd65436604
Add rust file/dir usertest ( #65 )
2025-12-18 16:19:42 -08:00
