Statically allocate task pools on stable Rust.

Thanks @0e4ef622 for the awesome idea of how to do it and the first implementation.

Co-Authored-By: Matthew Tran <0e4ef622@gmail.com>

embassy-executor-macros/src/macros/task.rs

@@ -145,9 +145,43 @@ pub fn run(args: TokenStream, item: TokenStream) -> TokenStream {
     };
     #[cfg(not(feature = "nightly"))]
     let mut task_outer_body = quote! {
+        const fn __task_pool_size<F, Args>(_: F) -> usize
+        where
+            F: #embassy_executor::_export::TaskFn<Args>,
+        {
+            ::core::mem::size_of::<
+                #embassy_executor::raw::TaskPool<F::Fut, POOL_SIZE>
+            >()
+        }
+        const fn __task_pool_align<F, Args>(_: F) -> usize
+        where
+            F: #embassy_executor::_export::TaskFn<Args>,
+        {
+            ::core::mem::align_of::<
+                #embassy_executor::raw::TaskPool<F::Fut, POOL_SIZE>
+            >()
+        }
+
+        const fn __task_pool_new<F, Args>(_: F) -> #embassy_executor::raw::TaskPool<F::Fut, POOL_SIZE>
+        where
+            F: #embassy_executor::_export::TaskFn<Args>,
+        {
+            #embassy_executor::raw::TaskPool::new()
+        }
+
+        const fn __task_pool_get<F, Args>(_: F) -> &'static #embassy_executor::raw::TaskPool<F::Fut, POOL_SIZE>
+        where
+            F: #embassy_executor::_export::TaskFn<Args>
+        {
+            unsafe { &*POOL.get().cast() }
+        }
+
         const POOL_SIZE: usize = #pool_size;
-        static POOL: #embassy_executor::_export::TaskPoolRef = #embassy_executor::_export::TaskPoolRef::new();
-        unsafe { POOL.get::<_, POOL_SIZE>()._spawn_async_fn(move || #task_inner_ident(#(#full_args,)*)) }
+        static POOL: #embassy_executor::_export::TaskPoolHolder<
+            {__task_pool_size(#task_inner_ident)},
+            {__task_pool_align(#task_inner_ident)},
+        > = unsafe { ::core::mem::transmute(__task_pool_new(#task_inner_ident)) };
+        unsafe { __task_pool_get(#task_inner_ident)._spawn_async_fn(move || #task_inner_ident(#(#full_args,)*)) }
     };
 
     let task_outer_attrs = task_inner.attrs.clone();

embassy-executor/Cargo.toml

@@ -108,98 +108,3 @@ timer-item-payload-size-2 = ["_timer-item-payload"]
 timer-item-payload-size-4 = ["_timer-item-payload"]
 ## 8 bytes
 timer-item-payload-size-8 = ["_timer-item-payload"]
-
-#! ### Task Arena Size
-#! Sets the [task arena](#task-arena) size. Necessary if you’re not using `nightly`.
-#!
-#! <details>
-#!  <summary>Preconfigured Task Arena Sizes:</summary>
-#! <!-- rustdoc requires the following blank line for the feature list to render correctly! -->
-#!
-
-# BEGIN AUTOGENERATED CONFIG FEATURES
-# Generated by gen_config.py. DO NOT EDIT.
-## 64
-task-arena-size-64 = []
-## 128
-task-arena-size-128 = []
-## 192
-task-arena-size-192 = []
-## 256
-task-arena-size-256 = []
-## 320
-task-arena-size-320 = []
-## 384
-task-arena-size-384 = []
-## 512
-task-arena-size-512 = []
-## 640
-task-arena-size-640 = []
-## 768
-task-arena-size-768 = []
-## 1024
-task-arena-size-1024 = []
-## 1280
-task-arena-size-1280 = []
-## 1536
-task-arena-size-1536 = []
-## 2048
-task-arena-size-2048 = []
-## 2560
-task-arena-size-2560 = []
-## 3072
-task-arena-size-3072 = []
-## 4096 (default)
-task-arena-size-4096 = [] # Default
-## 5120
-task-arena-size-5120 = []
-## 6144
-task-arena-size-6144 = []
-## 8192
-task-arena-size-8192 = []
-## 10240
-task-arena-size-10240 = []
-## 12288
-task-arena-size-12288 = []
-## 16384
-task-arena-size-16384 = []
-## 20480
-task-arena-size-20480 = []
-## 24576
-task-arena-size-24576 = []
-## 32768
-task-arena-size-32768 = []
-## 40960
-task-arena-size-40960 = []
-## 49152
-task-arena-size-49152 = []
-## 65536
-task-arena-size-65536 = []
-## 81920
-task-arena-size-81920 = []
-## 98304
-task-arena-size-98304 = []
-## 131072
-task-arena-size-131072 = []
-## 163840
-task-arena-size-163840 = []
-## 196608
-task-arena-size-196608 = []
-## 262144
-task-arena-size-262144 = []
-## 327680
-task-arena-size-327680 = []
-## 393216
-task-arena-size-393216 = []
-## 524288
-task-arena-size-524288 = []
-## 655360
-task-arena-size-655360 = []
-## 786432
-task-arena-size-786432 = []
-## 1048576
-task-arena-size-1048576 = []
-
-# END AUTOGENERATED CONFIG FEATURES
-
-#! </details>

embassy-executor/README.md

@@ -3,35 +3,10 @@
 An async/await executor designed for embedded usage.
 
 - No `alloc`, no heap needed.
-- With nightly Rust, task futures can be fully statically allocated.
+- Tasks are statically allocated. Each task gets its own `static`, with the exact size to hold the task (or multiple instances of it, if using `pool_size`) calculated automatically at compile time. If tasks don't fit in RAM, this is detected at compile time by the linker. Runtime panics due to running out of memory are not possible.
 - No "fixed capacity" data structures, executor works with 1 or 1000 tasks without needing config/tuning.
 - Integrated timer queue: sleeping is easy, just do `Timer::after_secs(1).await;`.
 - No busy-loop polling: CPU sleeps when there's no work to do, using interrupts or `WFE/SEV`.
 - Efficient polling: a wake will only poll the woken task, not all of them.
 - Fair: a task can't monopolize CPU time even if it's constantly being woken. All other tasks get a chance to run before a given task gets polled for the second time.
 - Creating multiple executor instances is supported, to run tasks with multiple priority levels. This allows higher-priority tasks to preempt lower-priority tasks.
-
-## Task arena
-
-When the `nightly` Cargo feature is not enabled, `embassy-executor` allocates tasks out of an arena (a very simple bump allocator).
-
-If the task arena gets full, the program will panic at runtime. To guarantee this doesn't happen, you must set the size to the sum of sizes of all tasks.
-
-Tasks are allocated from the arena when spawned for the first time. If the task exits, the allocation is not released to the arena, but can be reused to spawn the task again. For multiple-instance tasks (like `#[embassy_executor::task(pool_size = 4)]`), the first spawn will allocate memory for all instances. This is done for performance and to increase predictability (for example, spawning at least 1 instance of every task at boot guarantees an immediate panic if the arena is too small, while allocating instances on-demand could delay the panic to only when the program is under load).
-
-The arena size can be configured in two ways:
-
-- Via Cargo features: enable a Cargo feature like `task-arena-size-8192`. Only a selection of values
-  is available, see [Task Area Sizes](#task-arena-size) for reference.
-- Via environment variables at build time: set the variable named `EMBASSY_EXECUTOR_TASK_ARENA_SIZE`. For example
-  `EMBASSY_EXECUTOR_TASK_ARENA_SIZE=4321 cargo build`. You can also set them in the `[env]` section of `.cargo/config.toml`.
-  Any value can be set, unlike with Cargo features.
-
-Environment variables take precedence over Cargo features. If two Cargo features are enabled for the same setting
-with different values, compilation fails.
-
-## Statically allocating tasks
-
-When using nightly Rust, enable the `nightly` Cargo feature. This will make `embassy-executor` use the `type_alias_impl_trait` feature to allocate all tasks in `static`s. Each task gets its own `static`, with the exact size to hold the task (or multiple instances of it, if using `pool_size`) calculated automatically at compile time. If tasks don't fit in RAM, this is detected at compile time by the linker. Runtime panics due to running out of memory are not possible.
-
-The configured arena size is ignored, no arena is used at all.

embassy-executor/build.rs

@@ -1,99 +1,7 @@
-use std::collections::HashMap;
-use std::fmt::Write;
-use std::path::PathBuf;
-use std::{env, fs};
-
 #[path = "./build_common.rs"]
 mod common;
 
-static CONFIGS: &[(&str, usize)] = &[
-    // BEGIN AUTOGENERATED CONFIG FEATURES
-    // Generated by gen_config.py. DO NOT EDIT.
-    ("TASK_ARENA_SIZE", 4096),
-    // END AUTOGENERATED CONFIG FEATURES
-];
-
-struct ConfigState {
-    value: usize,
-    seen_feature: bool,
-    seen_env: bool,
-}
-
 fn main() {
-    let crate_name = env::var("CARGO_PKG_NAME")
-        .unwrap()
-        .to_ascii_uppercase()
-        .replace('-', "_");
-
-    // only rebuild if build.rs changed. Otherwise Cargo will rebuild if any
-    // other file changed.
-    println!("cargo:rerun-if-changed=build.rs");
-
-    // Rebuild if config envvar changed.
-    for (name, _) in CONFIGS {
-        println!("cargo:rerun-if-env-changed={crate_name}_{name}");
-    }
-
-    let mut configs = HashMap::new();
-    for (name, default) in CONFIGS {
-        configs.insert(
-            *name,
-            ConfigState {
-                value: *default,
-                seen_env: false,
-                seen_feature: false,
-            },
-        );
-    }
-
-    let prefix = format!("{crate_name}_");
-    for (var, value) in env::vars() {
-        if let Some(name) = var.strip_prefix(&prefix) {
-            let Some(cfg) = configs.get_mut(name) else {
-                panic!("Unknown env var {name}")
-            };
-
-            let Ok(value) = value.parse::<usize>() else {
-                panic!("Invalid value for env var {name}: {value}")
-            };
-
-            cfg.value = value;
-            cfg.seen_env = true;
-        }
-
-        if let Some(feature) = var.strip_prefix("CARGO_FEATURE_") {
-            if let Some(i) = feature.rfind('_') {
-                let name = &feature[..i];
-                let value = &feature[i + 1..];
-                if let Some(cfg) = configs.get_mut(name) {
-                    let Ok(value) = value.parse::<usize>() else {
-                        panic!("Invalid value for feature {name}: {value}")
-                    };
-
-                    // envvars take priority.
-                    if !cfg.seen_env {
-                        if cfg.seen_feature {
-                            panic!("multiple values set for feature {}: {} and {}", name, cfg.value, value);
-                        }
-
-                        cfg.value = value;
-                        cfg.seen_feature = true;
-                    }
-                }
-            }
-        }
-    }
-
-    let mut data = String::new();
-
-    for (name, cfg) in &configs {
-        writeln!(&mut data, "pub const {}: usize = {};", name, cfg.value).unwrap();
-    }
-
-    let out_dir = PathBuf::from(env::var_os("OUT_DIR").unwrap());
-    let out_file = out_dir.join("config.rs").to_string_lossy().to_string();
-    fs::write(out_file, data).unwrap();
-
     let mut rustc_cfgs = common::CfgSet::new();
     common::set_target_cfgs(&mut rustc_cfgs);
 }

embassy-executor/src/lib.rs

@@ -50,101 +50,129 @@ pub mod raw;
 mod spawner;
 pub use spawner::*;
 
-mod config {
-    #![allow(unused)]
-    include!(concat!(env!("OUT_DIR"), "/config.rs"));
-}
-
 /// Implementation details for embassy macros.
 /// Do not use. Used for macros and HALs only. Not covered by semver guarantees.
 #[doc(hidden)]
 #[cfg(not(feature = "nightly"))]
 pub mod _export {
-    use core::alloc::Layout;
-    use core::cell::{Cell, UnsafeCell};
+    use core::cell::UnsafeCell;
     use core::future::Future;
     use core::mem::MaybeUninit;
-    use core::ptr::null_mut;
 
-    use critical_section::{CriticalSection, Mutex};
-
-    use crate::raw::TaskPool;
-
-    struct Arena<const N: usize> {
-        buf: UnsafeCell<MaybeUninit<[u8; N]>>,
-        ptr: Mutex<Cell<*mut u8>>,
+    pub trait TaskFn<Args>: Copy {
+        type Fut: Future + 'static;
     }
 
-    unsafe impl<const N: usize> Sync for Arena<N> {}
-    unsafe impl<const N: usize> Send for Arena<N> {}
-
-    impl<const N: usize> Arena<N> {
-        const fn new() -> Self {
-            Self {
-                buf: UnsafeCell::new(MaybeUninit::uninit()),
-                ptr: Mutex::new(Cell::new(null_mut())),
+    macro_rules! task_fn_impl {
+        ($($Tn:ident),*) => {
+            impl<F, Fut, $($Tn,)*> TaskFn<($($Tn,)*)> for F
+            where
+                F: Copy + FnOnce($($Tn,)*) -> Fut,
+                Fut: Future + 'static,
+            {
+                type Fut = Fut;
             }
-        }
+        };
+    }
 
-        fn alloc<T>(&'static self, cs: CriticalSection) -> &'static mut MaybeUninit<T> {
-            let layout = Layout::new::<T>();
+    task_fn_impl!();
+    task_fn_impl!(T0);
+    task_fn_impl!(T0, T1);
+    task_fn_impl!(T0, T1, T2);
+    task_fn_impl!(T0, T1, T2, T3);
+    task_fn_impl!(T0, T1, T2, T3, T4);
+    task_fn_impl!(T0, T1, T2, T3, T4, T5);
+    task_fn_impl!(T0, T1, T2, T3, T4, T5, T6);
+    task_fn_impl!(T0, T1, T2, T3, T4, T5, T6, T7);
+    task_fn_impl!(T0, T1, T2, T3, T4, T5, T6, T7, T8);
+    task_fn_impl!(T0, T1, T2, T3, T4, T5, T6, T7, T8, T9);
+    task_fn_impl!(T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10);
+    task_fn_impl!(T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11);
+    task_fn_impl!(T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12);
+    task_fn_impl!(T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13);
+    task_fn_impl!(T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14);
+    task_fn_impl!(T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15);
 
-            let start = self.buf.get().cast::<u8>();
-            let end = unsafe { start.add(N) };
+    #[allow(private_bounds)]
+    #[repr(C)]
+    pub struct TaskPoolHolder<const SIZE: usize, const ALIGN: usize>
+    where
+        Align<ALIGN>: Alignment,
+    {
+        data: UnsafeCell<[MaybeUninit<u8>; SIZE]>,
+        align: Align<ALIGN>,
+    }
 
-            let mut ptr = self.ptr.borrow(cs).get();
-            if ptr.is_null() {
-                ptr = self.buf.get().cast::<u8>();
-            }
+    unsafe impl<const SIZE: usize, const ALIGN: usize> Send for TaskPoolHolder<SIZE, ALIGN> where Align<ALIGN>: Alignment {}
+    unsafe impl<const SIZE: usize, const ALIGN: usize> Sync for TaskPoolHolder<SIZE, ALIGN> where Align<ALIGN>: Alignment {}
 
-            let bytes_left = (end as usize) - (ptr as usize);
-            let align_offset = (ptr as usize).next_multiple_of(layout.align()) - (ptr as usize);
-
-            if align_offset + layout.size() > bytes_left {
-                panic!("embassy-executor: task arena is full. You must increase the arena size, see the documentation for details: https://docs.embassy.dev/embassy-executor/");
-            }
-
-            let res = unsafe { ptr.add(align_offset) };
-            let ptr = unsafe { ptr.add(align_offset + layout.size()) };
-
-            self.ptr.borrow(cs).set(ptr);
-
-            unsafe { &mut *(res as *mut MaybeUninit<T>) }
+    #[allow(private_bounds)]
+    impl<const SIZE: usize, const ALIGN: usize> TaskPoolHolder<SIZE, ALIGN>
+    where
+        Align<ALIGN>: Alignment,
+    {
+        pub const fn get(&self) -> *const u8 {
+            self.data.get().cast()
         }
     }
 
-    static ARENA: Arena<{ crate::config::TASK_ARENA_SIZE }> = Arena::new();
+    #[allow(private_bounds)]
+    #[repr(transparent)]
+    pub struct Align<const N: usize>([<Self as Alignment>::Archetype; 0])
+    where
+        Self: Alignment;
 
-    pub struct TaskPoolRef {
-        // type-erased `&'static mut TaskPool<F, N>`
-        // Needed because statics can't have generics.
-        ptr: Mutex<Cell<*mut ()>>,
+    trait Alignment {
+        /// A zero-sized type of particular alignment.
+        type Archetype: Copy + Eq + PartialEq + Send + Sync + Unpin;
     }
-    unsafe impl Sync for TaskPoolRef {}
-    unsafe impl Send for TaskPoolRef {}
 
-    impl TaskPoolRef {
-        pub const fn new() -> Self {
-            Self {
-                ptr: Mutex::new(Cell::new(null_mut())),
-            }
-        }
-
-        /// Get the pool for this ref, allocating it from the arena the first time.
-        ///
-        /// safety: for a given TaskPoolRef instance, must always call with the exact
-        /// same generic params.
-        pub unsafe fn get<F: Future, const N: usize>(&'static self) -> &'static TaskPool<F, N> {
-            critical_section::with(|cs| {
-                let ptr = self.ptr.borrow(cs);
-                if ptr.get().is_null() {
-                    let pool = ARENA.alloc::<TaskPool<F, N>>(cs);
-                    pool.write(TaskPool::new());
-                    ptr.set(pool as *mut _ as _);
+    macro_rules! aligns {
+        ($($AlignX:ident: $n:literal,)*) => {
+            $(
+                #[derive(Copy, Clone, Eq, PartialEq)]
+                #[repr(align($n))]
+                struct $AlignX {}
+                impl Alignment for Align<$n> {
+                    type Archetype = $AlignX;
                 }
-
-                unsafe { &*(ptr.get() as *const _) }
-            })
-        }
+            )*
+        };
     }
+
+    aligns!(
+        Align1:         1,
+        Align2:         2,
+        Align4:         4,
+        Align8:         8,
+        Align16:        16,
+        Align32:        32,
+        Align64:        64,
+        Align128:       128,
+        Align256:       256,
+        Align512:       512,
+        Align1024:      1024,
+        Align2048:      2048,
+        Align4096:      4096,
+        Align8192:      8192,
+        Align16384:     16384,
+    );
+    #[cfg(any(target_pointer_width = "32", target_pointer_width = "64"))]
+    aligns!(
+        Align32768:     32768,
+        Align65536:     65536,
+        Align131072:    131072,
+        Align262144:    262144,
+        Align524288:    524288,
+        Align1048576:   1048576,
+        Align2097152:   2097152,
+        Align4194304:   4194304,
+        Align8388608:   8388608,
+        Align16777216:  16777216,
+        Align33554432:  33554432,
+        Align67108864:  67108864,
+        Align134217728: 134217728,
+        Align268435456: 268435456,
+        Align536870912: 536870912,
+    );
 }

examples/boot/application/nrf/Cargo.toml

@@ -6,7 +6,7 @@ license = "MIT OR Apache-2.0"
 
 [dependencies]
 embassy-sync = { version = "0.6.2", path = "../../../../embassy-sync" }
-embassy-executor = { version = "0.7.0", path = "../../../../embassy-executor", features = ["task-arena-size-16384", "arch-cortex-m", "executor-thread", "arch-cortex-m", "executor-thread"] }
+embassy-executor = { version = "0.7.0", path = "../../../../embassy-executor", features = ["arch-cortex-m", "executor-thread", "arch-cortex-m", "executor-thread"] }
 embassy-time = { version = "0.4.0", path = "../../../../embassy-time", features = [] }
 embassy-nrf = { version = "0.3.1", path = "../../../../embassy-nrf", features = ["time-driver-rtc1", "gpiote", ] }
 embassy-boot = { version = "0.4.0", path = "../../../../embassy-boot", features = [] }

examples/boot/application/rp/Cargo.toml

@@ -6,7 +6,7 @@ license = "MIT OR Apache-2.0"
 
 [dependencies]
 embassy-sync = { version = "0.6.2", path = "../../../../embassy-sync" }
-embassy-executor = { version = "0.7.0", path = "../../../../embassy-executor", features = ["task-arena-size-16384", "arch-cortex-m", "executor-thread", "arch-cortex-m", "executor-thread"] }
+embassy-executor = { version = "0.7.0", path = "../../../../embassy-executor", features = ["arch-cortex-m", "executor-thread", "arch-cortex-m", "executor-thread"] }
 embassy-time = { version = "0.4.0", path = "../../../../embassy-time", features = [] }
 embassy-rp = { version = "0.4.0", path = "../../../../embassy-rp", features = ["time-driver", "rp2040"] }
 embassy-boot-rp = { version = "0.5.0", path = "../../../../embassy-boot-rp", features = [] }

examples/boot/application/stm32f3/Cargo.toml

@@ -6,7 +6,7 @@ license = "MIT OR Apache-2.0"
 
 [dependencies]
 embassy-sync = { version = "0.6.2", path = "../../../../embassy-sync" }
-embassy-executor = { version = "0.7.0", path = "../../../../embassy-executor", features = ["task-arena-size-8192", "arch-cortex-m", "executor-thread"] }
+embassy-executor = { version = "0.7.0", path = "../../../../embassy-executor", features = ["arch-cortex-m", "executor-thread"] }
 embassy-time = { version = "0.4.0", path = "../../../../embassy-time", features = [ "tick-hz-32_768"] }
 embassy-stm32 = { version = "0.2.0", path = "../../../../embassy-stm32", features = ["stm32f303re", "time-driver-any", "exti"]  }
 embassy-boot-stm32 = { version = "0.2.0", path = "../../../../embassy-boot-stm32" }

examples/boot/application/stm32f7/Cargo.toml

@@ -6,7 +6,7 @@ license = "MIT OR Apache-2.0"
 
 [dependencies]
 embassy-sync = { version = "0.6.2", path = "../../../../embassy-sync" }
-embassy-executor = { version = "0.7.0", path = "../../../../embassy-executor", features = ["task-arena-size-8192", "arch-cortex-m", "executor-thread"] }
+embassy-executor = { version = "0.7.0", path = "../../../../embassy-executor", features = ["arch-cortex-m", "executor-thread"] }
 embassy-time = { version = "0.4.0", path = "../../../../embassy-time", features = [ "tick-hz-32_768"] }
 embassy-stm32 = { version = "0.2.0", path = "../../../../embassy-stm32", features = ["stm32f767zi", "time-driver-any", "exti"]  }
 embassy-boot-stm32 = { version = "0.2.0", path = "../../../../embassy-boot-stm32", features = [] }

examples/boot/application/stm32h7/Cargo.toml

@@ -6,7 +6,7 @@ license = "MIT OR Apache-2.0"
 
 [dependencies]
 embassy-sync = { version = "0.6.2", path = "../../../../embassy-sync" }
-embassy-executor = { version = "0.7.0", path = "../../../../embassy-executor", features = ["task-arena-size-8192", "arch-cortex-m", "executor-thread"] }
+embassy-executor = { version = "0.7.0", path = "../../../../embassy-executor", features = ["arch-cortex-m", "executor-thread"] }
 embassy-time = { version = "0.4.0", path = "../../../../embassy-time", features = [ "tick-hz-32_768"] }
 embassy-stm32 = { version = "0.2.0", path = "../../../../embassy-stm32", features = ["stm32h743zi", "time-driver-any", "exti"]  }
 embassy-boot-stm32 = { version = "0.2.0", path = "../../../../embassy-boot-stm32", features = [] }

examples/boot/application/stm32l0/Cargo.toml

@@ -6,7 +6,7 @@ license = "MIT OR Apache-2.0"
 
 [dependencies]
 embassy-sync = { version = "0.6.2", path = "../../../../embassy-sync" }
-embassy-executor = { version = "0.7.0", path = "../../../../embassy-executor", features = ["task-arena-size-8192", "arch-cortex-m", "executor-thread"] }
+embassy-executor = { version = "0.7.0", path = "../../../../embassy-executor", features = ["arch-cortex-m", "executor-thread"] }
 embassy-time = { version = "0.4.0", path = "../../../../embassy-time", features = [ "tick-hz-32_768"] }
 embassy-stm32 = { version = "0.2.0", path = "../../../../embassy-stm32", features = ["stm32l072cz", "time-driver-any", "exti", "memory-x"]  }
 embassy-boot-stm32 = { version = "0.2.0", path = "../../../../embassy-boot-stm32", features = [] }

examples/boot/application/stm32l1/Cargo.toml

@@ -6,7 +6,7 @@ license = "MIT OR Apache-2.0"
 
 [dependencies]
 embassy-sync = { version = "0.6.2", path = "../../../../embassy-sync" }
-embassy-executor = { version = "0.7.0", path = "../../../../embassy-executor", features = ["task-arena-size-8192", "arch-cortex-m", "executor-thread"] }
+embassy-executor = { version = "0.7.0", path = "../../../../embassy-executor", features = ["arch-cortex-m", "executor-thread"] }
 embassy-time = { version = "0.4.0", path = "../../../../embassy-time", features = [ "tick-hz-32_768"] }
 embassy-stm32 = { version = "0.2.0", path = "../../../../embassy-stm32", features = ["stm32l151cb-a", "time-driver-any", "exti"]  }
 embassy-boot-stm32 = { version = "0.2.0", path = "../../../../embassy-boot-stm32", features = [] }

examples/boot/application/stm32l4/Cargo.toml

@@ -6,7 +6,7 @@ license = "MIT OR Apache-2.0"
 
 [dependencies]
 embassy-sync = { version = "0.6.2", path = "../../../../embassy-sync" }
-embassy-executor = { version = "0.7.0", path = "../../../../embassy-executor", features = ["task-arena-size-8192", "arch-cortex-m", "executor-thread"] }
+embassy-executor = { version = "0.7.0", path = "../../../../embassy-executor", features = ["arch-cortex-m", "executor-thread"] }
 embassy-time = { version = "0.4.0", path = "../../../../embassy-time", features = [ "tick-hz-32_768"] }
 embassy-stm32 = { version = "0.2.0", path = "../../../../embassy-stm32", features = ["stm32l475vg", "time-driver-any", "exti"]  }
 embassy-boot-stm32 = { version = "0.2.0", path = "../../../../embassy-boot-stm32", features = [] }

examples/boot/application/stm32wb-dfu/Cargo.toml

@@ -6,7 +6,7 @@ license = "MIT OR Apache-2.0"
 
 [dependencies]
 embassy-sync = { version = "0.6.2", path = "../../../../embassy-sync" }
-embassy-executor = { version = "0.7.0", path = "../../../../embassy-executor", features = ["task-arena-size-8192", "arch-cortex-m", "executor-thread"] }
+embassy-executor = { version = "0.7.0", path = "../../../../embassy-executor", features = ["arch-cortex-m", "executor-thread"] }
 embassy-time = { version = "0.4.0", path = "../../../../embassy-time", features = [ "tick-hz-32_768"] }
 embassy-stm32 = { version = "0.2.0", path = "../../../../embassy-stm32", features = ["stm32wb55rg", "time-driver-any", "exti"]  }
 embassy-boot-stm32 = { version = "0.2.0", path = "../../../../embassy-boot-stm32", features = [] }

examples/boot/application/stm32wl/Cargo.toml

@@ -6,7 +6,7 @@ license = "MIT OR Apache-2.0"
 
 [dependencies]
 embassy-sync = { version = "0.6.2", path = "../../../../embassy-sync" }
-embassy-executor = { version = "0.7.0", path = "../../../../embassy-executor", features = ["task-arena-size-8192", "arch-cortex-m", "executor-thread"] }
+embassy-executor = { version = "0.7.0", path = "../../../../embassy-executor", features = ["arch-cortex-m", "executor-thread"] }
 embassy-time = { version = "0.4.0", path = "../../../../embassy-time", features = [ "tick-hz-32_768"] }
 embassy-stm32 = { version = "0.2.0", path = "../../../../embassy-stm32", features = ["stm32wl55jc-cm4", "time-driver-any", "exti"]  }
 embassy-boot-stm32 = { version = "0.2.0", path = "../../../../embassy-boot-stm32", features = [] }

examples/lpc55s69/Cargo.toml

@@ -7,7 +7,7 @@ license = "MIT OR Apache-2.0"
 
 [dependencies]
 embassy-nxp = { version = "0.1.0", path = "../../embassy-nxp", features = ["rt"] }
-embassy-executor = { version = "0.7.0", path = "../../embassy-executor", features = ["task-arena-size-32768", "arch-cortex-m", "executor-thread", "executor-interrupt"] }
+embassy-executor = { version = "0.7.0", path = "../../embassy-executor", features = ["arch-cortex-m", "executor-thread", "executor-interrupt"] }
 embassy-sync = { version = "0.6.2", path = "../../embassy-sync", features = ["defmt"] }
 embassy-time = { version = "0.4.0", path = "../../embassy-time", features = ["defmt"] }
 panic-halt = "0.2.0"

examples/mspm0c1104/Cargo.toml

@@ -6,7 +6,7 @@ license = "MIT OR Apache-2.0"
 
 [dependencies]
 embassy-mspm0 = { version = "0.1.0", path = "../../embassy-mspm0", features = ["mspm0c110x", "rt", "time-driver-any"] }
-embassy-executor = { version = "0.7.0", path = "../../embassy-executor", features = ["task-arena-size-128", "arch-cortex-m", "executor-thread", "executor-interrupt"] }
+embassy-executor = { version = "0.7.0", path = "../../embassy-executor", features = ["arch-cortex-m", "executor-thread", "executor-interrupt"] }
 embassy-sync = { version = "0.6.2", path = "../../embassy-sync", features = ["defmt"] }
 embassy-time = { version = "0.4.0", path = "../../embassy-time", features = ["defmt"] }
 panic-halt = "0.2.0"

examples/mspm0g3507/Cargo.toml

@@ -6,7 +6,7 @@ license = "MIT OR Apache-2.0"
 
 [dependencies]
 embassy-mspm0 = { version = "0.1.0", path = "../../embassy-mspm0", features = ["mspm0g350x", "rt", "time-driver-any"] }
-embassy-executor = { version = "0.7.0", path = "../../embassy-executor", features = ["task-arena-size-4096", "arch-cortex-m", "executor-thread", "executor-interrupt"] }
+embassy-executor = { version = "0.7.0", path = "../../embassy-executor", features = ["arch-cortex-m", "executor-thread", "executor-interrupt"] }
 embassy-sync = { version = "0.6.2", path = "../../embassy-sync", features = ["defmt"] }
 embassy-time = { version = "0.4.0", path = "../../embassy-time", features = ["defmt"] }
 panic-halt = "0.2.0"

examples/mspm0g3519/Cargo.toml

@@ -6,7 +6,7 @@ license = "MIT OR Apache-2.0"
 
 [dependencies]
 embassy-mspm0 = { version = "0.1.0", path = "../../embassy-mspm0", features = ["mspm0g351x", "rt", "time-driver-any"] }
-embassy-executor = { version = "0.7.0", path = "../../embassy-executor", features = ["task-arena-size-16384", "arch-cortex-m", "executor-thread", "executor-interrupt"] }
+embassy-executor = { version = "0.7.0", path = "../../embassy-executor", features = ["arch-cortex-m", "executor-thread", "executor-interrupt"] }
 embassy-sync = { version = "0.6.2", path = "../../embassy-sync", features = ["defmt"] }
 embassy-time = { version = "0.4.0", path = "../../embassy-time", features = ["defmt"] }
 panic-halt = "0.2.0"

examples/mspm0l1306/Cargo.toml

@@ -6,7 +6,7 @@ license = "MIT OR Apache-2.0"
 
 [dependencies]
 embassy-mspm0 = { version = "0.1.0", path = "../../embassy-mspm0", features = ["mspm0l130x", "rt", "time-driver-any"] }
-embassy-executor = { version = "0.7.0", path = "../../embassy-executor", features = ["task-arena-size-1024", "arch-cortex-m", "executor-thread", "executor-interrupt"] }
+embassy-executor = { version = "0.7.0", path = "../../embassy-executor", features = ["arch-cortex-m", "executor-thread", "executor-interrupt"] }
 embassy-sync = { version = "0.6.2", path = "../../embassy-sync", features = ["defmt"] }
 embassy-time = { version = "0.4.0", path = "../../embassy-time", features = ["defmt"] }
 panic-halt = "0.2.0"

examples/mspm0l2228/Cargo.toml

@@ -6,7 +6,7 @@ license = "MIT OR Apache-2.0"
 
 [dependencies]
 embassy-mspm0 = { version = "0.1.0", path = "../../embassy-mspm0", features = ["mspm0l222x", "rt", "time-driver-any"] }
-embassy-executor = { version = "0.7.0", path = "../../embassy-executor", features = ["task-arena-size-1024", "arch-cortex-m", "executor-thread", "executor-interrupt"] }
+embassy-executor = { version = "0.7.0", path = "../../embassy-executor", features = ["arch-cortex-m", "executor-thread", "executor-interrupt"] }
 embassy-sync = { version = "0.6.2", path = "../../embassy-sync", features = ["defmt"] }
 embassy-time = { version = "0.4.0", path = "../../embassy-time", features = ["defmt"] }
 panic-halt = "0.2.0"

examples/nrf51/Cargo.toml

@@ -5,7 +5,7 @@ version = "0.1.0"
 license = "MIT OR Apache-2.0"
 
 [dependencies]
-embassy-executor = { version = "0.7.0", path = "../../embassy-executor", features = ["task-arena-size-4096", "arch-cortex-m", "executor-thread", "executor-interrupt", "defmt"] }
+embassy-executor = { version = "0.7.0", path = "../../embassy-executor", features = ["arch-cortex-m", "executor-thread", "executor-interrupt", "defmt"] }
 embassy-time = { version = "0.4.0", path = "../../embassy-time", features = ["defmt", "defmt-timestamp-uptime"] }
 embassy-nrf = { version = "0.3.1", path = "../../embassy-nrf", features = ["defmt", "nrf51", "gpiote", "time-driver-rtc1", "unstable-pac", "time", "rt"] }
 

examples/nrf52810/Cargo.toml

@@ -7,7 +7,7 @@ license = "MIT OR Apache-2.0"
 [dependencies]
 embassy-futures = { version = "0.1.0", path = "../../embassy-futures" }
 embassy-sync = { version = "0.6.2", path = "../../embassy-sync", features = ["defmt"] }
-embassy-executor = { version = "0.7.0", path = "../../embassy-executor", features = ["task-arena-size-8192", "arch-cortex-m", "executor-thread", "executor-interrupt", "defmt"] }
+embassy-executor = { version = "0.7.0", path = "../../embassy-executor", features = ["arch-cortex-m", "executor-thread", "executor-interrupt", "defmt"] }
 embassy-time = { version = "0.4.0", path = "../../embassy-time", features = ["defmt", "defmt-timestamp-uptime"] }
 embassy-nrf = { version = "0.3.1", path = "../../embassy-nrf", features = ["defmt", "nrf52810", "time-driver-rtc1", "gpiote", "unstable-pac", "time"] }
 

examples/nrf52840/Cargo.toml

@@ -7,7 +7,7 @@ license = "MIT OR Apache-2.0"
 [dependencies]
 embassy-futures = { version = "0.1.0", path = "../../embassy-futures" }
 embassy-sync = { version = "0.6.2", path = "../../embassy-sync", features = ["defmt"] }
-embassy-executor = { version = "0.7.0", path = "../../embassy-executor", features = ["task-arena-size-32768", "arch-cortex-m", "executor-thread", "executor-interrupt", "defmt"] }
+embassy-executor = { version = "0.7.0", path = "../../embassy-executor", features = ["arch-cortex-m", "executor-thread", "executor-interrupt", "defmt"] }
 embassy-time = { version = "0.4.0", path = "../../embassy-time", features = ["defmt", "defmt-timestamp-uptime"] }
 embassy-nrf = { version = "0.3.1", path = "../../embassy-nrf", features = ["defmt", "nrf52840", "time-driver-rtc1", "gpiote", "unstable-pac", "time"] }
 embassy-net = { version = "0.7.0", path = "../../embassy-net", features = ["defmt", "tcp", "dhcpv4", "medium-ethernet"] }

examples/nrf5340/Cargo.toml

@@ -7,7 +7,7 @@ license = "MIT OR Apache-2.0"
 [dependencies]
 embassy-futures = { version = "0.1.0", path = "../../embassy-futures" }
 embassy-sync = { version = "0.6.2", path = "../../embassy-sync", features = ["defmt"] }
-embassy-executor = { version = "0.7.0", path = "../../embassy-executor", features = ["task-arena-size-32768", "arch-cortex-m", "executor-thread", "defmt"] }
+embassy-executor = { version = "0.7.0", path = "../../embassy-executor", features = ["arch-cortex-m", "executor-thread", "defmt"] }
 embassy-time = { version = "0.4.0", path = "../../embassy-time", features = ["defmt", "defmt-timestamp-uptime"] }
 embassy-nrf = { version = "0.3.1", path = "../../embassy-nrf", features = ["defmt", "nrf5340-app-s", "time-driver-rtc1", "gpiote", "unstable-pac"] }
 embassy-net = { version = "0.7.0", path = "../../embassy-net", features = ["defmt", "tcp", "dhcpv4", "medium-ethernet"] }

examples/nrf54l15/Cargo.toml

@@ -5,7 +5,7 @@ version = "0.1.0"
 license = "MIT OR Apache-2.0"
 
 [dependencies]
-embassy-executor = { version = "0.7.0", path = "../../embassy-executor", features = ["task-arena-size-32768", "arch-cortex-m", "executor-thread", "executor-interrupt", "defmt"] }
+embassy-executor = { version = "0.7.0", path = "../../embassy-executor", features = ["arch-cortex-m", "executor-thread", "executor-interrupt", "defmt"] }
 embassy-time = { version = "0.4.0", path = "../../embassy-time", features = ["defmt", "defmt-timestamp-uptime"] }
 embassy-nrf = { version = "0.3.1", path = "../../embassy-nrf", features = ["defmt", "nrf54l15-app-s", "time-driver-rtc1", "gpiote", "unstable-pac", "time"] }
 

examples/nrf9151/ns/Cargo.toml

@@ -5,7 +5,7 @@ version = "0.1.0"
 license = "MIT OR Apache-2.0"
 
 [dependencies]
-embassy-executor = { version = "0.7.0", path = "../../../embassy-executor", features = ["task-arena-size-32768", "arch-cortex-m", "executor-thread", "executor-interrupt", "defmt"] }
+embassy-executor = { version = "0.7.0", path = "../../../embassy-executor", features = ["arch-cortex-m", "executor-thread", "executor-interrupt", "defmt"] }
 embassy-time = { version = "0.4.0", path = "../../../embassy-time", features = ["defmt", "defmt-timestamp-uptime"] }
 embassy-nrf = { version = "0.3.1", path = "../../../embassy-nrf", features = ["defmt", "nrf9120-ns", "time-driver-rtc1", "gpiote", "unstable-pac", "time"] }
 

examples/nrf9151/s/Cargo.toml

@@ -5,7 +5,7 @@ version = "0.1.0"
 license = "MIT OR Apache-2.0"
 
 [dependencies]
-embassy-executor = { version = "0.7.0", path = "../../../embassy-executor", features = ["task-arena-size-32768", "arch-cortex-m", "executor-thread", "executor-interrupt", "defmt"] }
+embassy-executor = { version = "0.7.0", path = "../../../embassy-executor", features = ["arch-cortex-m", "executor-thread", "executor-interrupt", "defmt"] }
 embassy-time = { version = "0.4.0", path = "../../../embassy-time", features = ["defmt", "defmt-timestamp-uptime"] }
 embassy-nrf = { version = "0.3.1", path = "../../../embassy-nrf", features = ["defmt", "nrf9120-s", "time-driver-rtc1", "gpiote", "unstable-pac", "time"] }
 

examples/nrf9160/Cargo.toml

@@ -5,7 +5,7 @@ version = "0.1.0"
 license = "MIT OR Apache-2.0"
 
 [dependencies]
-embassy-executor = { version = "0.7.0", path = "../../embassy-executor", features = ["task-arena-size-32768", "arch-cortex-m", "executor-thread", "executor-interrupt", "defmt"] }
+embassy-executor = { version = "0.7.0", path = "../../embassy-executor", features = ["arch-cortex-m", "executor-thread", "executor-interrupt", "defmt"] }
 embassy-time = { version = "0.4.0", path = "../../embassy-time", features = ["defmt", "defmt-timestamp-uptime"] }
 embassy-nrf = { version = "0.3.1", path = "../../embassy-nrf", features = ["defmt", "nrf9160-s", "time-driver-rtc1", "gpiote", "unstable-pac", "time"] }
 embassy-net-nrf91 = { version = "0.1.0", path = "../../embassy-net-nrf91", features = ["defmt"] }

examples/rp/Cargo.toml

@@ -8,7 +8,7 @@ license = "MIT OR Apache-2.0"
 [dependencies]
 embassy-embedded-hal = { version = "0.3.0", path = "../../embassy-embedded-hal", features = ["defmt"] }
 embassy-sync = { version = "0.6.2", path = "../../embassy-sync", features = ["defmt"] }
-embassy-executor = { version = "0.7.0", path = "../../embassy-executor", features = ["task-arena-size-98304", "arch-cortex-m", "executor-thread", "executor-interrupt", "defmt"] }
+embassy-executor = { version = "0.7.0", path = "../../embassy-executor", features = ["arch-cortex-m", "executor-thread", "executor-interrupt", "defmt"] }
 embassy-time = { version = "0.4.0", path = "../../embassy-time", features = ["defmt", "defmt-timestamp-uptime"] }
 embassy-rp = { version = "0.4.0", path = "../../embassy-rp", features = ["defmt", "unstable-pac", "time-driver", "critical-section-impl", "rp2040"] }
 embassy-usb = { version = "0.4.0", path = "../../embassy-usb", features = ["defmt"] }

examples/rp235x/Cargo.toml

@@ -8,7 +8,7 @@ license = "MIT OR Apache-2.0"
 [dependencies]
 embassy-embedded-hal = { version = "0.3.0", path = "../../embassy-embedded-hal", features = ["defmt"] }
 embassy-sync = { version = "0.6.2", path = "../../embassy-sync", features = ["defmt"] }
-embassy-executor = { version = "0.7.0", path = "../../embassy-executor", features = ["task-arena-size-98304", "arch-cortex-m", "executor-thread", "executor-interrupt", "defmt"] }
+embassy-executor = { version = "0.7.0", path = "../../embassy-executor", features = ["arch-cortex-m", "executor-thread", "executor-interrupt", "defmt"] }
 embassy-time = { version = "0.4.0", path = "../../embassy-time", features = ["defmt", "defmt-timestamp-uptime"] }
 embassy-rp = { version = "0.4.0", path = "../../embassy-rp", features = ["defmt", "unstable-pac", "time-driver", "critical-section-impl", "rp235xa", "binary-info"] }
 embassy-usb = { version = "0.4.0", path = "../../embassy-usb", features = ["defmt"] }

examples/std/Cargo.toml

@@ -6,7 +6,7 @@ license = "MIT OR Apache-2.0"
 
 [dependencies]
 embassy-sync = { version = "0.6.2", path = "../../embassy-sync", features = ["log"] }
-embassy-executor = { version = "0.7.0", path = "../../embassy-executor", features = ["task-arena-size-32768", "arch-std", "executor-thread", "log"] }
+embassy-executor = { version = "0.7.0", path = "../../embassy-executor", features = ["arch-std", "executor-thread", "log"] }
 embassy-time = { version = "0.4.0", path = "../../embassy-time", features = ["log", "std", ] }
 embassy-net = { version = "0.7.0", path = "../../embassy-net", features=[ "log", "medium-ethernet", "medium-ip", "tcp", "udp", "dns", "dhcpv4", "proto-ipv6"] }
 embassy-net-tuntap = { version = "0.1.0", path = "../../embassy-net-tuntap" }

examples/stm32f4/Cargo.toml

@@ -8,7 +8,7 @@ license = "MIT OR Apache-2.0"
 # Change stm32f429zi to your chip name, if necessary.
 embassy-stm32 = { version = "0.2.0", path = "../../embassy-stm32", features = ["defmt", "stm32f429zi", "unstable-pac", "memory-x", "time-driver-tim4", "exti", "chrono"] }
 embassy-sync = { version = "0.6.2", path = "../../embassy-sync", features = ["defmt"] }
-embassy-executor = { version = "0.7.0", path = "../../embassy-executor", features = ["task-arena-size-32768", "arch-cortex-m", "executor-thread", "executor-interrupt", "defmt"] }
+embassy-executor = { version = "0.7.0", path = "../../embassy-executor", features = ["arch-cortex-m", "executor-thread", "executor-interrupt", "defmt"] }
 embassy-time = { version = "0.4.0", path = "../../embassy-time", features = ["defmt", "defmt-timestamp-uptime", "tick-hz-32_768"] }
 embassy-usb = { version = "0.4.0", path = "../../embassy-usb", features = ["defmt" ] }
 embassy-net = { version = "0.7.0", path = "../../embassy-net", features = ["defmt", "tcp", "dhcpv4", "medium-ethernet", ] }

examples/stm32f469/Cargo.toml

@@ -7,7 +7,7 @@ license = "MIT OR Apache-2.0"
 [dependencies]
 # Specific examples only for stm32f469
 embassy-stm32 = { version = "0.2.0", path = "../../embassy-stm32", features = ["defmt", "stm32f469ni", "unstable-pac", "memory-x", "time-driver-any", "exti", "chrono"] }
-embassy-executor = { version = "0.7.0", path = "../../embassy-executor", features = ["task-arena-size-32768", "arch-cortex-m", "executor-thread", "executor-interrupt", "defmt"] }
+embassy-executor = { version = "0.7.0", path = "../../embassy-executor", features = ["arch-cortex-m", "executor-thread", "executor-interrupt", "defmt"] }
 embassy-time = { version = "0.4.0", path = "../../embassy-time", features = ["defmt", "defmt-timestamp-uptime", "tick-hz-32_768"] }
 
 defmt = "0.3"

examples/stm32f7/Cargo.toml

@@ -8,7 +8,7 @@ license = "MIT OR Apache-2.0"
 # Change stm32f777zi to your chip name, if necessary.
 embassy-stm32 = { version = "0.2.0", path = "../../embassy-stm32", features = ["defmt", "stm32f777zi", "memory-x", "unstable-pac", "time-driver-any", "exti"]  }
 embassy-sync = { version = "0.6.2", path = "../../embassy-sync", features = ["defmt"] }
-embassy-executor = { version = "0.7.0", path = "../../embassy-executor", features = ["task-arena-size-32768", "arch-cortex-m", "executor-thread", "defmt"] }
+embassy-executor = { version = "0.7.0", path = "../../embassy-executor", features = ["arch-cortex-m", "executor-thread", "defmt"] }
 embassy-time = { version = "0.4.0", path = "../../embassy-time", features = ["defmt", "defmt-timestamp-uptime", "tick-hz-32_768"] }
 embassy-net = { version = "0.7.0", path = "../../embassy-net", features = ["defmt", "tcp", "dhcpv4", "medium-ethernet"] }
 embedded-io-async = { version = "0.6.1" }

examples/stm32h5/Cargo.toml

@@ -8,7 +8,7 @@ license = "MIT OR Apache-2.0"
 # Change stm32h563zi to your chip name, if necessary.
 embassy-stm32 = { version = "0.2.0", path = "../../embassy-stm32", features = ["defmt", "stm32h563zi", "memory-x", "time-driver-any", "exti", "unstable-pac", "low-power"] }
 embassy-sync = { version = "0.6.2", path = "../../embassy-sync", features = ["defmt"] }
-embassy-executor = { version = "0.7.0", path = "../../embassy-executor", features = ["task-arena-size-32768", "arch-cortex-m", "executor-thread", "defmt"] }
+embassy-executor = { version = "0.7.0", path = "../../embassy-executor", features = ["arch-cortex-m", "executor-thread", "defmt"] }
 embassy-time = { version = "0.4.0", path = "../../embassy-time", features = ["defmt", "defmt-timestamp-uptime", "tick-hz-32_768"] }
 embassy-net = { version = "0.7.0", path = "../../embassy-net", features = ["defmt", "tcp", "dhcpv4", "medium-ethernet", "proto-ipv6"] }
 embassy-usb = { version = "0.4.0", path = "../../embassy-usb", features = ["defmt"] }

examples/stm32h7/Cargo.toml

@@ -9,7 +9,7 @@ license = "MIT OR Apache-2.0"
 embassy-stm32 = { version = "0.2.0", path = "../../embassy-stm32", features = ["defmt", "stm32h743bi", "time-driver-tim2", "exti", "memory-x", "unstable-pac", "chrono"] }
 embassy-sync = { version = "0.6.2", path = "../../embassy-sync", features = ["defmt"] }
 embassy-embedded-hal = { version = "0.3.0", path = "../../embassy-embedded-hal" }
-embassy-executor = { version = "0.7.0", path = "../../embassy-executor", features = ["task-arena-size-32768", "arch-cortex-m", "executor-thread", "executor-interrupt", "defmt"] }
+embassy-executor = { version = "0.7.0", path = "../../embassy-executor", features = ["arch-cortex-m", "executor-thread", "executor-interrupt", "defmt"] }
 embassy-time = { version = "0.4.0", path = "../../embassy-time", features = ["defmt", "defmt-timestamp-uptime", "tick-hz-32_768"] }
 embassy-net = { version = "0.7.0", path = "../../embassy-net", features = ["defmt", "tcp", "dhcpv4", "medium-ethernet", "proto-ipv6", "dns"] }
 embassy-usb = { version = "0.4.0", path = "../../embassy-usb", features = ["defmt"] }

examples/stm32h723/Cargo.toml

@@ -8,7 +8,7 @@ license = "MIT OR Apache-2.0"
 # Change stm32h723zg to your chip name, if necessary.
 embassy-stm32 = { version = "0.2.0", path = "../../embassy-stm32", features = ["defmt", "stm32h723zg", "time-driver-tim2", "exti", "memory-x", "unstable-pac", "chrono"] }
 embassy-sync = { version = "0.6.2", path = "../../embassy-sync", features = ["defmt"] }
-embassy-executor = { version = "0.7.0", path = "../../embassy-executor", features = ["task-arena-size-32768", "arch-cortex-m", "executor-thread", "executor-interrupt", "defmt"] }
+embassy-executor = { version = "0.7.0", path = "../../embassy-executor", features = ["arch-cortex-m", "executor-thread", "executor-interrupt", "defmt"] }
 embassy-time = { version = "0.4.0", path = "../../embassy-time", features = ["defmt", "defmt-timestamp-uptime", "tick-hz-32_768"] }
 embassy-futures = { version = "0.1.0", path = "../../embassy-futures" }
 

examples/stm32h735/Cargo.toml

@@ -8,7 +8,7 @@ license = "MIT OR Apache-2.0"
 embassy-stm32 = { version = "0.2.0", path = "../../embassy-stm32", features = ["defmt", "stm32h735ig", "time-driver-tim2", "exti", "memory-x", "unstable-pac", "chrono"] }
 embassy-sync = { version = "0.6.2", path = "../../embassy-sync", features = ["defmt"] }
 embassy-embedded-hal = { version = "0.3.0", path = "../../embassy-embedded-hal" }
-embassy-executor = { version = "0.7.0", path = "../../embassy-executor", features = ["task-arena-size-32768", "arch-cortex-m", "executor-thread", "executor-interrupt", "defmt"] }
+embassy-executor = { version = "0.7.0", path = "../../embassy-executor", features = ["arch-cortex-m", "executor-thread", "executor-interrupt", "defmt"] }
 embassy-time = { version = "0.4.0", path = "../../embassy-time", features = ["defmt", "defmt-timestamp-uptime", "tick-hz-32_768"] }
 embassy-futures = { version = "0.1.0", path = "../../embassy-futures" }
 

examples/stm32h755cm4/Cargo.toml

@@ -9,7 +9,7 @@ license = "MIT OR Apache-2.0"
 embassy-stm32 = { version = "0.2.0", path = "../../embassy-stm32", features = ["defmt", "stm32h755zi-cm4", "time-driver-tim2", "exti", "memory-x", "unstable-pac", "chrono"] }
 embassy-sync = { version = "0.6.2", path = "../../embassy-sync", features = ["defmt"] }
 embassy-embedded-hal = { version = "0.3.0", path = "../../embassy-embedded-hal" }
-embassy-executor = { version = "0.7.0", path = "../../embassy-executor", features = ["task-arena-size-32768", "arch-cortex-m", "executor-thread", "executor-interrupt", "defmt"] }
+embassy-executor = { version = "0.7.0", path = "../../embassy-executor", features = ["arch-cortex-m", "executor-thread", "executor-interrupt", "defmt"] }
 embassy-time = { version = "0.4.0", path = "../../embassy-time", features = ["defmt", "defmt-timestamp-uptime", "tick-hz-32_768"] }
 embassy-net = { version = "0.7.0", path = "../../embassy-net", features = ["defmt", "tcp", "dhcpv4", "medium-ethernet", "proto-ipv6", "dns"] }
 embassy-usb = { version = "0.4.0", path = "../../embassy-usb", features = ["defmt"] }

examples/stm32h755cm7/Cargo.toml

@@ -9,7 +9,7 @@ license = "MIT OR Apache-2.0"
 embassy-stm32 = { version = "0.2.0", path = "../../embassy-stm32", features = ["defmt", "stm32h755zi-cm7", "time-driver-tim3", "exti", "memory-x", "unstable-pac", "chrono"] }
 embassy-sync = { version = "0.6.2", path = "../../embassy-sync", features = ["defmt"] }
 embassy-embedded-hal = { version = "0.3.0", path = "../../embassy-embedded-hal" }
-embassy-executor = { version = "0.7.0", path = "../../embassy-executor", features = ["task-arena-size-32768", "arch-cortex-m", "executor-thread", "executor-interrupt", "defmt"] }
+embassy-executor = { version = "0.7.0", path = "../../embassy-executor", features = ["arch-cortex-m", "executor-thread", "executor-interrupt", "defmt"] }
 embassy-time = { version = "0.4.0", path = "../../embassy-time", features = ["defmt", "defmt-timestamp-uptime", "tick-hz-32_768"] }
 embassy-net = { version = "0.7.0", path = "../../embassy-net", features = ["defmt", "tcp", "dhcpv4", "medium-ethernet", "proto-ipv6", "dns"] }
 embassy-usb = { version = "0.4.0", path = "../../embassy-usb", features = ["defmt"] }

examples/stm32h7b0/Cargo.toml

@@ -8,7 +8,7 @@ license = "MIT OR Apache-2.0"
 embassy-stm32 = { version = "0.2.0", path = "../../embassy-stm32", features = ["defmt", "stm32h7b0vb", "time-driver-tim2", "exti", "memory-x", "unstable-pac", "chrono"] }
 embassy-sync = { version = "0.6.2", path = "../../embassy-sync", features = ["defmt"] }
 embassy-embedded-hal = { version = "0.3.0", path = "../../embassy-embedded-hal" }
-embassy-executor = { version = "0.7.0", path = "../../embassy-executor", features = ["task-arena-size-32768", "arch-cortex-m", "executor-thread", "executor-interrupt", "defmt"] }
+embassy-executor = { version = "0.7.0", path = "../../embassy-executor", features = ["arch-cortex-m", "executor-thread", "executor-interrupt", "defmt"] }
 embassy-time = { version = "0.4.0", path = "../../embassy-time", features = ["defmt", "defmt-timestamp-uptime", "tick-hz-32_768"] }
 embassy-net = { version = "0.7.0", path = "../../embassy-net", features = ["defmt", "tcp", "dhcpv4", "medium-ethernet", "proto-ipv6", "dns"] }
 embassy-usb = { version = "0.4.0", path = "../../embassy-usb", features = ["defmt"] }

examples/stm32h7rs/Cargo.toml

@@ -8,7 +8,7 @@ license = "MIT OR Apache-2.0"
 # Change stm32h743bi to your chip name, if necessary.
 embassy-stm32 = { version = "0.2.0", path = "../../embassy-stm32", features = ["defmt", "stm32h7s3l8", "time-driver-tim2", "exti", "memory-x", "unstable-pac", "chrono"] }
 embassy-sync = { version = "0.6.2", path = "../../embassy-sync", features = ["defmt"] }
-embassy-executor = { version = "0.7.0", path = "../../embassy-executor", features = ["task-arena-size-32768", "arch-cortex-m", "executor-thread", "executor-interrupt", "defmt"] }
+embassy-executor = { version = "0.7.0", path = "../../embassy-executor", features = ["arch-cortex-m", "executor-thread", "executor-interrupt", "defmt"] }
 embassy-time = { version = "0.4.0", path = "../../embassy-time", features = ["defmt", "defmt-timestamp-uptime", "tick-hz-32_768"] }
 embassy-net = { version = "0.7.0", path = "../../embassy-net", features = ["defmt", "udp", "medium-ethernet", "medium-ip", "proto-ipv4"] }
 embassy-usb = { version = "0.4.0", path = "../../embassy-usb", features = ["defmt"] }

examples/stm32l4/Cargo.toml

@@ -8,7 +8,7 @@ license = "MIT OR Apache-2.0"
 # Change stm32l4s5vi to your chip name, if necessary.
 embassy-stm32 = { version = "0.2.0", path = "../../embassy-stm32", features = [ "defmt", "unstable-pac", "stm32l4r5zi", "memory-x", "time-driver-any", "exti", "chrono"]  }
 embassy-sync = { version = "0.6.2", path = "../../embassy-sync", features = ["defmt"] }
-embassy-executor = { version = "0.7.0", path = "../../embassy-executor", features = ["task-arena-size-32768", "arch-cortex-m", "executor-thread", "defmt"] }
+embassy-executor = { version = "0.7.0", path = "../../embassy-executor", features = ["arch-cortex-m", "executor-thread", "defmt"] }
 embassy-time = { version = "0.4.0", path = "../../embassy-time", features = ["defmt", "defmt-timestamp-uptime", "tick-hz-32_768", ] }
 embassy-embedded-hal = { version = "0.3.0", path = "../../embassy-embedded-hal" }
 embassy-usb = { version = "0.4.0", path = "../../embassy-usb", features = ["defmt"] }

examples/stm32l432/Cargo.toml

@@ -8,7 +8,7 @@ license = "MIT OR Apache-2.0"
 # Change stm32l4s5vi to your chip name, if necessary.
 embassy-stm32 = { version = "0.2.0", path = "../../embassy-stm32", features = [ "defmt", "unstable-pac", "stm32l432kc", "memory-x", "time-driver-any", "exti", "chrono"] }
 embassy-sync = { version = "0.6.2", path = "../../embassy-sync", features = [ "defmt" ] }
-embassy-executor = { version = "0.7.0", path = "../../embassy-executor", features = [ "task-arena-size-32768", "arch-cortex-m", "executor-thread", "defmt" ] }
+embassy-executor = { version = "0.7.0", path = "../../embassy-executor", features = [ "arch-cortex-m", "executor-thread", "defmt" ] }
 embassy-time = { version = "0.4.0", path = "../../embassy-time", features = [ "defmt", "defmt-timestamp-uptime", "tick-hz-32_768" ] }
 defmt = "0.3"
 defmt-rtt = "0.4"

examples/stm32l5/Cargo.toml

@@ -8,7 +8,7 @@ license = "MIT OR Apache-2.0"
 # Change stm32l552ze to your chip name, if necessary.
 embassy-stm32 = { version = "0.2.0", path = "../../embassy-stm32", features = [ "defmt", "unstable-pac", "stm32l552ze", "time-driver-any", "exti", "memory-x", "low-power"]  }
 embassy-sync = { version = "0.6.2", path = "../../embassy-sync", features = ["defmt"] }
-embassy-executor = { version = "0.7.0", path = "../../embassy-executor", features = ["task-arena-size-32768", "arch-cortex-m", "executor-thread", "defmt"] }
+embassy-executor = { version = "0.7.0", path = "../../embassy-executor", features = ["arch-cortex-m", "executor-thread", "defmt"] }
 embassy-time = { version = "0.4.0", path = "../../embassy-time", features = ["defmt", "defmt-timestamp-uptime", "tick-hz-32_768"] }
 embassy-usb = { version = "0.4.0", path = "../../embassy-usb", features = ["defmt"] }
 embassy-net = { version = "0.7.0", path = "../../embassy-net", features = ["defmt",  "tcp", "dhcpv4", "medium-ethernet"] }

examples/stm32u5/Cargo.toml

@@ -8,7 +8,7 @@ license = "MIT OR Apache-2.0"
 # Change stm32u5g9zj to your chip name, if necessary.
 embassy-stm32 = { version = "0.2.0", path = "../../embassy-stm32", features = ["defmt", "unstable-pac", "stm32u5g9zj", "time-driver-any", "memory-x" ]  }
 embassy-sync = { version = "0.6.2", path = "../../embassy-sync", features = ["defmt"] }
-embassy-executor = { version = "0.7.0", path = "../../embassy-executor", features = ["task-arena-size-32768", "arch-cortex-m", "executor-thread", "defmt"] }
+embassy-executor = { version = "0.7.0", path = "../../embassy-executor", features = ["arch-cortex-m", "executor-thread", "defmt"] }
 embassy-time = { version = "0.4.0", path = "../../embassy-time", features = ["defmt", "defmt-timestamp-uptime", "tick-hz-32_768"] }
 embassy-usb = { version = "0.4.0", path = "../../embassy-usb", features = ["defmt"] }
 embassy-futures = { version = "0.1.0", path = "../../embassy-futures" }

examples/stm32wb/Cargo.toml

@@ -9,7 +9,7 @@ license = "MIT OR Apache-2.0"
 embassy-stm32 = { version = "0.2.0", path = "../../embassy-stm32", features = [ "defmt", "stm32wb55rg", "time-driver-any", "memory-x", "exti"]  }
 embassy-stm32-wpan = { version = "0.1.0", path = "../../embassy-stm32-wpan", features = ["defmt", "stm32wb55rg"] }
 embassy-sync = { version = "0.6.2", path = "../../embassy-sync", features = ["defmt"] }
-embassy-executor = { version = "0.7.0", path = "../../embassy-executor", features = ["task-arena-size-32768", "arch-cortex-m", "executor-thread", "defmt"] }
+embassy-executor = { version = "0.7.0", path = "../../embassy-executor", features = ["arch-cortex-m", "executor-thread", "defmt"] }
 embassy-time = { version = "0.4.0", path = "../../embassy-time", features = ["defmt", "defmt-timestamp-uptime", "tick-hz-32_768"] }
 embassy-net = { version = "0.7.0", path = "../../embassy-net", features = ["defmt", "udp", "proto-ipv6", "medium-ieee802154", ], optional=true }
 

examples/stm32wba/Cargo.toml

@@ -7,7 +7,7 @@ license = "MIT OR Apache-2.0"
 [dependencies]
 embassy-stm32 = { version = "0.2.0", path = "../../embassy-stm32", features = [ "defmt", "stm32wba55cg", "time-driver-any", "memory-x", "exti"]  }
 embassy-sync = { version = "0.6.2", path = "../../embassy-sync", features = ["defmt"] }
-embassy-executor = { version = "0.7.0", path = "../../embassy-executor", features = ["task-arena-size-32768", "arch-cortex-m", "executor-thread", "defmt"] }
+embassy-executor = { version = "0.7.0", path = "../../embassy-executor", features = ["arch-cortex-m", "executor-thread", "defmt"] }
 embassy-time = { version = "0.4.0", path = "../../embassy-time", features = ["defmt", "defmt-timestamp-uptime", "tick-hz-32_768"] }
 embassy-net = { version = "0.7.0", path = "../../embassy-net", features = ["defmt", "udp", "proto-ipv6", "medium-ieee802154", ], optional=true }
 

examples/stm32wl/Cargo.toml

@@ -8,7 +8,7 @@ license = "MIT OR Apache-2.0"
 # Change stm32wl55jc-cm4 to your chip name, if necessary.
 embassy-stm32 = { version = "0.2.0", path = "../../embassy-stm32", features = ["defmt", "stm32wl55jc-cm4", "time-driver-any", "memory-x", "unstable-pac", "exti", "chrono"] }
 embassy-sync = { version = "0.6.2", path = "../../embassy-sync", features = ["defmt"] }
-embassy-executor = { version = "0.7.0", path = "../../embassy-executor", features = ["task-arena-size-4096", "arch-cortex-m", "executor-thread", "defmt"] }
+embassy-executor = { version = "0.7.0", path = "../../embassy-executor", features = ["arch-cortex-m", "executor-thread", "defmt"] }
 embassy-time = { version = "0.4.0", path = "../../embassy-time", features = ["defmt", "defmt-timestamp-uptime", "tick-hz-32_768"] }
 embassy-embedded-hal = { version = "0.3.0", path = "../../embassy-embedded-hal" }
 

tests/nrf/Cargo.toml

@@ -33,7 +33,7 @@ portable-atomic = { version = "1.6.0" }
 nrf51422 = ["embassy-nrf/nrf51",         "portable-atomic/unsafe-assume-single-core"]
 nrf52832 = ["embassy-nrf/nrf52832",      "easydma"]
 nrf52833 = ["embassy-nrf/nrf52833",      "easydma", "two-uarts"]
-nrf52840 = ["embassy-nrf/nrf52840",      "easydma", "two-uarts", "embassy-executor/task-arena-size-16384"]
+nrf52840 = ["embassy-nrf/nrf52840",      "easydma", "two-uarts"]
 nrf5340  = ["embassy-nrf/nrf5340-app-s", "easydma", "two-uarts"]
 nrf9160  = ["embassy-nrf/nrf9160-s",     "easydma", "two-uarts"]
 

tests/rp/Cargo.toml

@@ -13,7 +13,7 @@ rp235xb = ["embassy-rp/rp235xb"]
 teleprobe-meta = "1.1"
 
 embassy-sync = { version = "0.6.2", path = "../../embassy-sync", features = ["defmt"] }
-embassy-executor = { version = "0.7.0", path = "../../embassy-executor", features = ["task-arena-size-32768", "arch-cortex-m", "executor-thread", "defmt"] }
+embassy-executor = { version = "0.7.0", path = "../../embassy-executor", features = ["arch-cortex-m", "executor-thread", "defmt"] }
 embassy-time = { version = "0.4.0", path = "../../embassy-time", features = ["defmt", ] }
 embassy-rp = { version = "0.4.0", path = "../../embassy-rp", features = [ "defmt", "unstable-pac", "time-driver", "critical-section-impl", "intrinsics", "rom-v2-intrinsics", "run-from-ram"]  }
 embassy-futures = { version = "0.1.0", path = "../../embassy-futures" }

tests/stm32/Cargo.toml

@@ -39,7 +39,7 @@ spi-v1 = []
 spi-v345 = []
 cryp = []
 hash = []
-eth = ["embassy-executor/task-arena-size-16384"]
+eth = []
 rng = []
 sdmmc = []
 stop = ["embassy-stm32/low-power", "embassy-stm32/low-power-debug-with-sleep"]