vasilito
cee25393d8
- Fix P15-8-init-cycle-detection.patch: replace visiting+error with seen+silent-skip to eliminate 11 false-positive 'dependency cycle detected' errors on shared deps - Fix P0-daemon-fix-init-notify-unwrap.patch: remove eprintln! for missing INIT_NOTIFY (expected for oneshot_async services, ~7 daemons affected) - Fix driver-manager hotplug loop: add PERMANENTLY_SKIPPED static set shared between hotplug handler and DriverConfig::probe() to stop infinite re-probing of Fatal/NotSupported/deferred-exhausted device+driver pairs (e.g. ided) - Fix driver-manager log_timeline: suppress repeated EPIPE/ENOENT errors with AtomicI32 dedup and AtomicBool one-shot guards for boot timeline JSON - Add driver-manager SIGTERM handler, ACPI bus registration, --status mode, driver reap loop, graceful shutdown, and reduced deferred retries (30→3)
83 lines
2.6 KiB
Diff
83 lines
2.6 KiB
Diff
--- a/src/syscall/process.rs
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+++ b/src/syscall/process.rs
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@@ -11,6 +11,7 @@
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memory::{AddrSpace, Grant, PageSpan},
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ContextRef,
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},
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+ cpu_set::RawMask,
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event,
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sync::{CleanLockToken, RwLock},
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syscall::flag::{EventFlags, O_CREAT, O_RDWR},
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@@ -295,3 +296,71 @@
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.expect("failed to insert fd to current context")
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.get()
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}
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+
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+/// Set CPU affinity mask for a process.
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+///
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+/// # Arguments (syscall ABI)
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+/// - `pid`: Process ID (0 = current process; other PIDs not yet supported)
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+/// - `mask_ptr`: Pointer to a `RawMask` (32 bytes on 64-bit, 256-bit bitmap)
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+/// - `mask_len`: Length of mask in bytes (must equal `size_of::<RawMask>()`)
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+pub fn sched_setaffinity(
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+ pid: usize,
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+ mask_ptr: super::usercopy::UserSliceRo,
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+ token: &mut CleanLockToken,
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+) -> Result<usize> {
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+ // Validate mask size
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+ if mask_ptr.len() != core::mem::size_of::<RawMask>() {
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+ return Err(Error::new(super::error::EINVAL));
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+ }
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+
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+ // pid == 0 means current process
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+ let target = if pid == 0 {
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+ context::current()
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+ } else {
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+ // TODO: Support PID-based lookup (requires context list iteration
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+ // with lock token downgrades). For now, only pid=0 is supported.
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+ return Err(Error::new(super::error::ESRCH));
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+ };
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+
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+ // Read mask from userspace
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+ let raw_mask: RawMask = unsafe { mask_ptr.read_exact() }?;
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+
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+ // Apply to context's affinity mask
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+ let mut ctx = target.write(token.token());
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+ ctx.sched_affinity.override_from(&raw_mask);
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+
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+ Ok(0)
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+}
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+
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+/// Get CPU affinity mask for a process.
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+///
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+/// # Arguments (syscall ABI)
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+/// - `pid`: Process ID (0 = current process; other PIDs not yet supported)
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+/// - `mask_ptr`: Pointer to a `RawMask` buffer (32 bytes on 64-bit)
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+/// - `mask_len`: Length of buffer in bytes (must equal `size_of::<RawMask>()`)
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+///
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+/// # Returns
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+/// Number of bytes written to mask_ptr on success.
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+pub fn sched_getaffinity(
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+ pid: usize,
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+ mask_ptr: super::usercopy::UserSliceWo,
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+ token: &mut CleanLockToken,
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+) -> Result<usize> {
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+ // Validate mask size
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+ if mask_ptr.len() != core::mem::size_of::<RawMask>() {
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+ return Err(Error::new(super::error::EINVAL));
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+ }
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+
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+ // pid == 0 means current process
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+ let target = if pid == 0 {
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+ context::current()
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+ } else {
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+ return Err(Error::new(super::error::ESRCH));
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+ };
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+
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+ let ctx = target.read(token.token());
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+ let raw_mask = ctx.sched_affinity.to_raw();
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+ mask_ptr.copy_common_bytes_from_slice(crate::cpu_set::mask_as_bytes(&raw_mask))?;
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+
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+ Ok(core::mem::size_of::<RawMask>())
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+}
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