b7dabfc3c2
Deficit based Weighted Round Robin Scheduler
2026-03-22 07:00:31 -06:00
ea847f428f
Fix compilation with the debugger feature enabled
2026-03-07 12:19:24 +01:00
14b8c2b0c1
enforce two lints and collapse some ifs
2026-03-03 14:51:32 +00:00
3c2b1a11c5
Add ordered lock for time offset mutex
2026-02-25 11:42:17 +07:00
7ff1898765
Fix a couple of warnings
2026-02-06 20:54:42 +01:00
1c850605d0
Only read time once during context switch
2026-01-20 14:18:33 -07:00
81a49d211b
Fix potential preempt guard deadlock
2026-01-20 13:58:31 -07:00
d9eae6bb75
fix(sync/wait_condition): deadlock in WaitCondition::wait
...
Instead of using a simple switch to determine if preemption is enabled
(`is_preemptable: bool`), a counter is used instead. This handles the
case where a function holding a `PreemptGuard` calls another function
that creates a new `PreemptGuard`.
Signed-off-by: Anhad Singh <andypython@protonmail.com >
2025-12-15 13:05:29 +11:00
4ff82ad8b5
fix(scheme/user): deadlocks inside call_extended_inner
...
Signed-off-by: Anhad Singh <andypython@protonmail.com >
2025-11-27 14:39:14 +11:00
60af085356
Improve cpu stat accuracy
2025-11-03 20:42:08 -07:00
0931a7f49f
Resolve a huge portion of the clippy lints
2025-10-06 06:30:23 -06:00
5dc6f7c3ba
lock ordering
2025-09-22 07:48:48 -06:00
4884d749af
Make PercpuBlock const constructable
2025-09-15 19:00:03 +02:00
61db2b2ad5
Use core::hint::spin_loop() where possible
2025-09-13 18:55:16 +02:00
8a2aa411e2
Explicitly scope all locks, fixing multi_core hangs. Allow contexts on any CPU
2025-09-13 10:10:07 -06:00
cea93f7647
cargo fix --edition & rustfmt
...
Or to be precise:
RUST_TARGET_PATH=$(pwd)/targets cargo fix --edition \
--target targets/x86_64-unknown-kernel.json \
--target targets/i686-unknown-kernel.json \
--target targets/aarch64-unknown-kernel.json \
--target targets/riscv64-unknown-kernel.json \
-Zbuild-std=core,alloc --allow-dirty --bin kernel
cargo fmt
2025-09-10 16:44:36 +02:00
b5822ac118
Mostly use cfg!() rather than #[cfg] for controlling sys_stat
...
This only adds 48 bytes overhead per cpu core in the PerCpuBlock struct.
Also fixes compilation with sys_stat enabled on x86_64.
2025-09-07 12:27:04 +02:00
75edd1d34c
Fix infinite panicking when panicking during early boot
2025-04-21 16:44:27 +02:00
1d5f8fd46d
Move proc code to userspace.
2025-04-19 16:30:42 +02:00
2da88c18c0
Add the sys:stat scheme
2025-02-22 14:27:10 +00:00
e19c1404f7
chore: enrich context/switch
...
* Add documentation and more code comments to `src/context/switch.rs`
* Eliminate a `context.wake.expect(...)` where `context.wake.is_some()`
* Eliminate a TODO item about updating contexts' timestamps in `switch_to`
* Eliminate a dangling `else { continue }` at the end of the loop that iterates
on contexts
2024-10-31 10:22:21 +00:00
7fbe5c72e9
Use strong references in context set.
2024-07-15 18:08:42 +02:00
80fe891c6e
WIP: Replace ContextId with direct Arcs.
2024-07-15 18:08:42 +02:00
89d1d49a4e
Fix most code except proc scheme.
2024-07-15 18:08:41 +02:00
8f452b0b0f
WIP: continue the process transition
2024-07-15 18:08:41 +02:00
0da2fce64a
Separate context and process IDs.
2024-07-15 18:08:41 +02:00
d94baa2712
Run rustfmt.
2024-07-15 17:50:18 +02:00
5e7db80285
Fix a bunch of warnings.
2024-07-15 17:48:45 +02:00
d70ad544e6
Fix SIGKILL and allow SYS_EXIT to pass 16 bits.
2024-07-15 17:20:57 +02:00
ae8e13525f
Remove is_pending flag, read word directly instead.
2024-07-15 17:20:57 +02:00
cc406804c0
Don't double-clear is_pending flag.
2024-07-15 17:20:55 +02:00
55fe58adf6
WIP: implement kill syscall prototype
2024-07-15 17:20:55 +02:00
295cc820e6
WIP: userspace signal handling
2024-07-15 17:20:55 +02:00
66eb3361d3
Use saved regs instead of costly context.syscall.
2024-03-19 11:33:55 +01:00
4862977fa5
Optimize syscall fast path without tracing.
2024-03-18 20:38:11 +01:00
4a3dc2dadd
Fix the SIGKILL fd leak bug.
2024-03-16 17:49:32 +01:00
776a140212
Fix rax being overwritten, and compile on i686.
2024-03-16 17:49:31 +01:00
239bd317e9
Fix signal ordering wrt syscall return.
2024-03-16 17:49:31 +01:00
6d1e436d29
Remove some dead code.
2024-03-16 17:49:30 +01:00
5ac0be7ec1
Start with full procmask, fix signal delivery.
2024-03-16 17:49:30 +01:00
5336cbd9e5
Improve signal interfaces and implementation.
2024-03-16 17:49:30 +01:00
d38d8b66bd
Fix i686 compilation.
2024-03-05 10:26:57 +01:00
716f147cd4
Fix synchronization so acid tlb succeeds!
2024-03-04 19:03:01 +01:00
3a592b9079
Use regular non-NMI IPIs for TLB shootdown.
2024-03-04 19:03:00 +01:00
0c6c857012
Improve LogicalCpu{Id,Set}, make set atomic.
...
Technically there should be an atomic and nonatomic set type, but perf
should be the same, as the nonatomic one would only be used when setting
the sched_affinity.
2024-03-04 19:02:56 +01:00
24187b5f80
Move set_tss_stack call to switch_to
2024-02-25 20:10:49 +01:00
782ec87f27
Fix UB in the locking code of context switching
...
The spin crate considers it UB to call force_write_unlock while there is
a threads trying to obtain a read lock on the same rwlock.
This also switches to the spinning_lot crate for the context rwlock as
it has support for a write guard keeping a reference to the rwlock using
an Arc instead of a reference.
2024-02-25 17:07:41 +01:00
6c6fc18f8e
Format
2024-02-16 21:40:42 -07:00
86589aa7fa
Only switch to idle process when no other processes can run
2024-02-13 14:46:21 -07:00
98f12fd750
Hack to workaround hangs by pinning to one cpu
2024-02-10 09:18:57 -07:00
Akshit Gaur