runtime mgmt: avoid pull_log resource hog

flake.lock

@@ -11,11 +11,11 @@
         "src-pythonparser": "src-pythonparser"
       },
       "locked": {
-        "lastModified": 1722417433,
-        "narHash": "sha256-QEbcVdL1sUQEbMCvCUvPM8DKqwOth3gJpdiLTf4hPN8=",
+        "lastModified": 1724411572,
+        "narHash": "sha256-33vj/pJ9iaVvaFP8uuBKMSQPN20mRlCbeBkTCNc9WB4=",
         "ref": "refs/heads/master",
-        "rev": "0623480c82c28d57e14dc4f363374758a52284d3",
-        "revCount": 8952,
+        "rev": "352cf907ee67f7db5478fe23217cd5fcb7334617",
+        "revCount": 8996,
         "type": "git",
         "url": "https://github.com/m-labs/artiq.git"
       },
@@ -102,11 +102,11 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1721924956,
-        "narHash": "sha256-Sb1jlyRO+N8jBXEX9Pg9Z1Qb8Bw9QyOgLDNMEpmjZ2M=",
+        "lastModified": 1723362943,
+        "narHash": "sha256-dFZRVSgmJkyM0bkPpaYRtG/kRMRTorUIDj8BxoOt1T4=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "5ad6a14c6bf098e98800b091668718c336effc95",
+        "rev": "a58bc8ad779655e790115244571758e8de055e3d",
         "type": "github"
       },
       "original": {
@@ -131,15 +131,16 @@
         ]
       },
       "locked": {
-        "lastModified": 1722046723,
-        "narHash": "sha256-G7/gHz8ORRvHd1/RIURrdcswKRPe9K0FsIYR4v5jSWo=",
+        "lastModified": 1719454714,
+        "narHash": "sha256-MojqG0lyUINkEk0b3kM2drsU5vyaF8DFZe/FAlZVOGs=",
         "owner": "oxalica",
         "repo": "rust-overlay",
-        "rev": "56baac5e6b2743d4730e664ea64f6d8a2aad0fbb",
+        "rev": "d1c527659cf076ecc4b96a91c702d080b213801e",
         "type": "github"
       },
       "original": {
         "owner": "oxalica",
+        "ref": "snapshot/2024-08-01",
         "repo": "rust-overlay",
         "type": "github"
       }

src/Cargo.lock

@@ -2,6 +2,15 @@
 # It is not intended for manual editing.
 version = 3
 
+[[package]]
+name = "approx"
+version = "0.5.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "cab112f0a86d568ea0e627cc1d6be74a1e9cd55214684db5561995f6dad897c6"
+dependencies = [
+ "num-traits",
+]
+
 [[package]]
 name = "arrayvec"
 version = "0.7.4"
@@ -246,10 +255,10 @@ dependencies = [
  "libsupport_zynq",
  "log",
  "log_buffer",
+ "nalgebra",
  "nb 0.1.3",
  "unwind",
  "vcell",
- "nalgebra",
  "void",
 ]
 
@@ -383,6 +392,19 @@ version = "0.7.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "c75de51135344a4f8ed3cfe2720dc27736f7711989703a0b43aadf3753c55577"
 
+[[package]]
+name = "nalgebra"
+version = "0.32.6"
+source = "git+https://git.m-labs.hk/M-Labs/nalgebra.git?rev=dd00f9b#dd00f9b46046e0b931d1b470166db02fd29591be"
+dependencies = [
+ "approx",
+ "num-complex",
+ "num-rational",
+ "num-traits",
+ "simba",
+ "typenum",
+]
+
 [[package]]
 name = "nb"
 version = "0.1.3"
@@ -398,6 +420,15 @@ version = "1.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "546c37ac5d9e56f55e73b677106873d9d9f5190605e41a856503623648488cae"
 
+[[package]]
+name = "num-complex"
+version = "0.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "26873667bbbb7c5182d4a37c1add32cdf09f841af72da53318fdb81543c15085"
+dependencies = [
+ "num-traits",
+]
+
 [[package]]
 name = "num-derive"
 version = "0.3.3"
@@ -409,6 +440,26 @@ dependencies = [
  "syn",
 ]
 
+[[package]]
+name = "num-integer"
+version = "0.1.46"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7969661fd2958a5cb096e56c8e1ad0444ac2bbcd0061bd28660485a44879858f"
+dependencies = [
+ "num-traits",
+]
+
+[[package]]
+name = "num-rational"
+version = "0.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d41702bd167c2df5520b384281bc111a4b5efcf7fbc4c9c222c815b07e0a6a6a"
+dependencies = [
+ "autocfg",
+ "num-integer",
+ "num-traits",
+]
+
 [[package]]
 name = "num-traits"
 version = "0.2.15"
@@ -416,8 +467,15 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "578ede34cf02f8924ab9447f50c28075b4d3e5b269972345e7e0372b38c6cdcd"
 dependencies = [
  "autocfg",
+ "libm",
 ]
 
+[[package]]
+name = "paste"
+version = "1.0.15"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "57c0d7b74b563b49d38dae00a0c37d4d6de9b432382b2892f0574ddcae73fd0a"
+
 [[package]]
 name = "pin-project-lite"
 version = "0.2.9"
@@ -526,6 +584,18 @@ version = "0.1.20"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d4f410fedcf71af0345d7607d246e7ad15faaadd49d240ee3b24e5dc21a820ac"
 
+[[package]]
+name = "simba"
+version = "0.8.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "50582927ed6f77e4ac020c057f37a268fc6aebc29225050365aacbb9deeeddc4"
+dependencies = [
+ "approx",
+ "num-complex",
+ "num-traits",
+ "paste",
+]
+
 [[package]]
 name = "smoltcp"
 version = "0.7.5"
@@ -558,6 +628,12 @@ dependencies = [
  "log",
 ]
 
+[[package]]
+name = "typenum"
+version = "1.17.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "42ff0bf0c66b8238c6f3b578df37d0b7848e55df8577b3f74f92a69acceeb825"
+
 [[package]]
 name = "unicode-ident"
 version = "1.0.5"
@@ -574,147 +650,6 @@ dependencies = [
  "libc",
 ]
 
-[[package]]
-name = "nalgebra"
-version = "0.32.6"
-source = "git+https://git.m-labs.hk/M-labs/nalgebra?rev=dd00f9b#dd00f9b46046e0b931d1b470166db02fd29591be"
-dependencies = [
- "approx",
- "matrixmultiply",
- "nalgebra-macros",
- "num-complex",
- "num-rational",
- "num-traits",
- "simba",
- "typenum",
-]
-
-[[package]]
-name = "approx"
-version = "0.5.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "cab112f0a86d568ea0e627cc1d6be74a1e9cd55214684db5561995f6dad897c6"
-dependencies = [
- "num-traits",
-]
-
-[[package]]
-name = "matrixmultiply"
-version = "0.3.8"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7574c1cf36da4798ab73da5b215bbf444f50718207754cb522201d78d1cd0ff2"
-dependencies = [
- "autocfg",
- "rawpointer",
-]
-
-[[package]]
-name = "nalgebra-macros"
-version = "0.2.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "91761aed67d03ad966ef783ae962ef9bbaca728d2dd7ceb7939ec110fffad998"
-dependencies = [
- "proc-macro2",
- "quote",
- "syn",
-]
-
-[[package]]
-name = "num-complex"
-version = "0.4.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "26873667bbbb7c5182d4a37c1add32cdf09f841af72da53318fdb81543c15085"
-dependencies = [
- "num-traits",
-]
-
-[[package]]
-name = "num-rational"
-version = "0.4.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d41702bd167c2df5520b384281bc111a4b5efcf7fbc4c9c222c815b07e0a6a6a"
-dependencies = [
- "num-bigint",
- "num-integer",
- "num-traits",
-]
-
-[[package]]
-name = "simba"
-version = "0.8.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "50582927ed6f77e4ac020c057f37a268fc6aebc29225050365aacbb9deeeddc4"
-dependencies = [
- "approx",
- "num-complex",
- "num-traits",
- "paste",
- "wide",
-]
-
-[[package]]
-name = "typenum"
-version = "1.17.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "42ff0bf0c66b8238c6f3b578df37d0b7848e55df8577b3f74f92a69acceeb825"
-
-[[package]]
-name = "rawpointer"
-version = "0.2.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "60a357793950651c4ed0f3f52338f53b2f809f32d83a07f72909fa13e4c6c1e3"
-
-[[package]]
-name = "num-bigint"
-version = "0.4.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4e0d047c1062aa51e256408c560894e5251f08925980e53cf1aa5bd00eec6512"
-dependencies = [
- "num-integer",
- "num-traits",
-]
-
-[[package]]
-name = "num-integer"
-version = "0.1.46"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7969661fd2958a5cb096e56c8e1ad0444ac2bbcd0061bd28660485a44879858f"
-dependencies = [
- "num-traits",
-]
-
-[[package]]
-name = "paste"
-version = "1.0.15"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "57c0d7b74b563b49d38dae00a0c37d4d6de9b432382b2892f0574ddcae73fd0a"
-
-[[package]]
-name = "wide"
-version = "0.7.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "cd89cf484471f953ee84f07c0dff0ea20e9ddf976f03cabdf5dda48b221f22e7"
-features = ["no_std"]
-dependencies = [
- "bytemuck",
- "safe_arch",
-]
-
-[[package]]
-name = "bytemuck"
-version = "1.16.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b236fc92302c97ed75b38da1f4917b5cdda4984745740f153a5d3059e48d725e"
-
-[[package]]
-name = "safe_arch"
-version = "0.6.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "794821e4ccb0d9f979512f9c1973480123f9bd62a90d74ab0f9426fcf8f4a529"
-dependencies = [
- "bytemuck",
-]
-
 [[package]]
 name = "vcell"
 version = "0.1.3"

src/libksupport/Cargo.toml.tpl

@@ -34,7 +34,7 @@ io = { path = "../libio" }
 libboard_artiq = { path = "../libboard_artiq" }
 
 [dependencies.nalgebra]
-git = "https://git.m-labs.hk/M-labs/nalgebra.git"
+git = "https://git.m-labs.hk/M-Labs/nalgebra.git"
 rev = "dd00f9b"
 default-features = false
 features = ["libm", "alloc"]

src/libksupport/src/eh_artiq.rs

@@ -15,7 +15,7 @@
 use core::mem;
 
 use core_io::Error as ReadError;
-use cslice::CSlice;
+use cslice::{AsCSlice, CSlice};
 use dwarf::eh::{self, EHAction, EHContext};
 use io::{Cursor, ProtoRead};
 use libc::{c_int, c_void, uintptr_t};
@@ -222,8 +222,6 @@ pub unsafe fn artiq_personality(
 }
 
 pub unsafe extern "C" fn raise(exception: *const Exception) -> ! {
-    use cslice::AsCSlice;
-
     let count = EXCEPTION_BUFFER.exception_count;
     let stack = &mut EXCEPTION_BUFFER.exception_stack;
     let diff = exception as isize - EXCEPTION_BUFFER.exceptions.as_ptr() as isize;
@@ -477,20 +475,30 @@ extern "C" fn stop_fn(
     }
 }
 
-// Must be kept in sync with preallocate_runtime_exception_names() in artiq/language/embedding_map.py
-static EXCEPTION_ID_LOOKUP: [(&str, u32); 12] = [
-    ("RuntimeError", 0),
-    ("RTIOUnderflow", 1),
-    ("RTIOOverflow", 2),
-    ("RTIODestinationUnreachable", 3),
-    ("DMAError", 4),
-    ("I2CError", 5),
-    ("CacheError", 6),
-    ("SPIError", 7),
-    ("ZeroDivisionError", 8),
-    ("IndexError", 9),
-    ("UnwrapNoneError", 10),
-    ("SubkernelError", 11),
+// Must be kept in sync with preallocate_runtime_exception_names() in `artiq.compiler.embedding`
+static EXCEPTION_ID_LOOKUP: [(&str, u32); 22] = [
+    ("RTIOUnderflow", 0),
+    ("RTIOOverflow", 1),
+    ("RTIODestinationUnreachable", 2),
+    ("DMAError", 3),
+    ("I2CError", 4),
+    ("CacheError", 5),
+    ("SPIError", 6),
+    ("SubkernelError", 7),
+    ("AssertionError", 8),
+    ("AttributeError", 9),
+    ("IndexError", 10),
+    ("IOError", 11),
+    ("KeyError", 12),
+    ("NotImplementedError", 13),
+    ("OverflowError", 14),
+    ("RuntimeError", 15),
+    ("TimeoutError", 16),
+    ("TypeError", 17),
+    ("ValueError", 18),
+    ("ZeroDivisionError", 19),
+    ("LinAlgError", 20),
+    ("UnwrapNoneError", 21),
 ];
 
 pub fn get_exception_id(name: &str) -> u32 {
@@ -525,3 +533,29 @@ macro_rules! artiq_raise {
     }};
     ($name:expr, $message:expr) => {{ artiq_raise!($name, $message, 0, 0, 0) }};
 }
+
+/// Takes as input exception id from host
+/// Generates a new exception with:
+///   * `id` set to `exn_id`
+///   * `message` set to corresponding exception name from `EXCEPTION_ID_LOOKUP`
+///
+/// The message is matched on host to ensure correct exception is being referred
+/// This test checks the synchronization of exception ids for runtime errors
+#[no_mangle]
+pub extern "C" fn test_exception_id_sync(exn_id: u32) {
+    let message = EXCEPTION_ID_LOOKUP
+        .iter()
+        .find_map(|&(name, id)| if id == exn_id { Some(name) } else { None })
+        .unwrap_or("unallocated internal exception id");
+
+    let exn = Exception {
+        id: exn_id,
+        file: file!().as_c_slice(),
+        line: 0,
+        column: 0,
+        function: "test_exception_id_sync".as_c_slice(),
+        message: message.as_c_slice(),
+        param: [0, 0, 0],
+    };
+    unsafe { raise(&exn) };
+}

src/libksupport/src/kernel/api.rs

@@ -1,16 +1,15 @@
 use alloc::vec;
-use core::{ffi::VaList, ptr, slice, str};
+use core::{ffi::VaList, ptr, str};
 
 use libc::{c_char, c_int, size_t};
 use libm;
 use log::{info, warn};
-use nalgebra::{linalg, DMatrix};
 
 #[cfg(has_drtio)]
 use super::subkernel;
 use super::{cache,
             core1::rtio_get_destination_status,
-            dma,
+            dma, linalg,
             rpc::{rpc_recv, rpc_send, rpc_send_async}};
 use crate::{eh_artiq, i2c, rtio};
 
@@ -39,26 +38,6 @@ unsafe extern "C" fn rtio_log(fmt: *const c_char, mut args: ...) {
     rtio::write_log(buf.as_slice());
 }
 
-unsafe extern "C" fn linalg_try_invert_to(dim0: usize, dim1: usize, data: *mut f64) -> i8 {
-    let data_slice = unsafe { slice::from_raw_parts_mut(data, dim0 * dim1) };
-    let matrix = DMatrix::from_row_slice(dim0, dim1, data_slice);
-    let mut inverted_matrix = DMatrix::<f64>::zeros(dim0, dim1);
-
-    if linalg::try_invert_to(matrix, &mut inverted_matrix) {
-        data_slice.copy_from_slice(inverted_matrix.transpose().as_slice());
-        1
-    } else {
-        0
-    }
-}
-
-unsafe extern "C" fn linalg_wilkinson_shift(dim0: usize, dim1: usize, data: *mut f64) -> f64 {
-    let data_slice = slice::from_raw_parts_mut(data, dim0 * dim1);
-    let matrix = DMatrix::from_row_slice(dim0, dim1, data_slice);
-
-    linalg::wilkinson_shift(matrix[(0, 0)], matrix[(1, 1)], matrix[(0, 1)])
-}
-
 macro_rules! api {
     ($i:ident) => ({
         extern { static $i: u8; }
@@ -342,8 +321,24 @@ pub fn resolve(required: &[u8]) -> Option<u32> {
         },
 
         // linalg
-        api!(linalg_try_invert_to = linalg_try_invert_to),
-        api!(linalg_wilkinson_shift = linalg_wilkinson_shift),
+        api!(np_linalg_cholesky = linalg::np_linalg_cholesky),
+        api!(np_linalg_qr = linalg::np_linalg_qr),
+        api!(np_linalg_svd = linalg::np_linalg_svd),
+        api!(np_linalg_inv = linalg::np_linalg_inv),
+        api!(np_linalg_pinv = linalg::np_linalg_pinv),
+        api!(np_linalg_matrix_power = linalg::np_linalg_matrix_power),
+        api!(np_linalg_det = linalg::np_linalg_det),
+        api!(sp_linalg_lu = linalg::sp_linalg_lu),
+        api!(sp_linalg_schur = linalg::sp_linalg_schur),
+        api!(sp_linalg_hessenberg = linalg::sp_linalg_hessenberg),
+
+        /*
+         * syscall for unit tests
+         * Used in `artiq.tests.coredevice.test_exceptions.ExceptionTest.test_raise_exceptions_kernel`
+         * This syscall checks that the exception IDs used in the Python `EmbeddingMap` (in `artiq.language.embedding`)
+         * match the `EXCEPTION_ID_LOOKUP` defined in the firmware (`libksupport::src::eh_artiq`)
+         */
+        api!(test_exception_id_sync = eh_artiq::test_exception_id_sync)
     ];
     api.iter()
         .find(|&&(exported, _)| exported.as_bytes() == required)

src/libksupport/src/kernel/linalg.rs

@@ -0,0 +1,440 @@
+// Uses `nalgebra` crate to invoke `np_linalg` and `sp_linalg` functions
+// When converting between `nalgebra::Matrix` and `NDArray` following considerations are necessary
+//
+// * Both `nalgebra::Matrix` and `NDArray` require their content to be stored in row-major order
+// * `NDArray` data pointer can be directly read and converted to `nalgebra::Matrix` (row and column number must be known)
+// * `nalgebra::Matrix::as_slice` returns the content of matrix in column-major order and initial data needs to be transposed before storing it in `NDArray` data pointer
+
+use alloc::vec::Vec;
+use core::slice;
+
+use nalgebra::DMatrix;
+
+use crate::artiq_raise;
+
+pub struct InputMatrix {
+    pub ndims: usize,
+    pub dims: *const usize,
+    pub data: *mut f64,
+}
+
+impl InputMatrix {
+    fn get_dims(&mut self) -> Vec<usize> {
+        let dims = unsafe { slice::from_raw_parts(self.dims, self.ndims) };
+        dims.to_vec()
+    }
+}
+
+/// # Safety
+///
+/// `mat1` should point to a valid 2DArray of `f64` floats in row-major order
+#[no_mangle]
+pub unsafe extern "C" fn np_linalg_cholesky(mat1: *mut InputMatrix, out: *mut InputMatrix) {
+    let mat1 = mat1.as_mut().unwrap();
+    let out = out.as_mut().unwrap();
+
+    if mat1.ndims != 2 {
+        artiq_raise!(
+            "ValueError",
+            "expected 2D Vector Input, but received {1}D input)",
+            0,
+            mat1.ndims as i64,
+            0
+        );
+    }
+
+    let dim1 = (*mat1).get_dims();
+    if dim1[0] != dim1[1] {
+        artiq_raise!(
+            "ValueError",
+            "last 2 dimensions of the array must be square: {1} != {2}",
+            0,
+            dim1[0] as i64,
+            dim1[1] as i64
+        );
+    }
+
+    let outdim = out.get_dims();
+    let out_slice = slice::from_raw_parts_mut(out.data, outdim[0] * outdim[1]);
+    let data_slice1 = slice::from_raw_parts_mut(mat1.data, dim1[0] * dim1[1]);
+
+    let matrix1 = DMatrix::from_row_slice(dim1[0], dim1[1], data_slice1);
+    let result = matrix1.cholesky();
+    match result {
+        Some(res) => {
+            out_slice.copy_from_slice(res.unpack().transpose().as_slice());
+        }
+        None => {
+            artiq_raise!("LinAlgError", "Matrix is not positive definite");
+        }
+    };
+}
+
+/// # Safety
+///
+/// `mat1` should point to a valid 2DArray of `f64` floats in row-major order
+#[no_mangle]
+pub unsafe extern "C" fn np_linalg_qr(mat1: *mut InputMatrix, out_q: *mut InputMatrix, out_r: *mut InputMatrix) {
+    let mat1 = mat1.as_mut().unwrap();
+    let out_q = out_q.as_mut().unwrap();
+    let out_r = out_r.as_mut().unwrap();
+
+    if mat1.ndims != 2 {
+        artiq_raise!(
+            "ValueError",
+            "expected 2D Vector Input, but received {1}D input)",
+            0,
+            mat1.ndims as i64,
+            0
+        );
+    }
+
+    let dim1 = (*mat1).get_dims();
+    let outq_dim = (*out_q).get_dims();
+    let outr_dim = (*out_r).get_dims();
+
+    let data_slice1 = slice::from_raw_parts_mut(mat1.data, dim1[0] * dim1[1]);
+    let out_q_slice = slice::from_raw_parts_mut(out_q.data, outq_dim[0] * outq_dim[1]);
+    let out_r_slice = slice::from_raw_parts_mut(out_r.data, outr_dim[0] * outr_dim[1]);
+
+    // Refer to https://github.com/dimforge/nalgebra/issues/735
+    let matrix1 = DMatrix::from_row_slice(dim1[0], dim1[1], data_slice1);
+
+    let res = matrix1.qr();
+    let (q, r) = res.unpack();
+
+    // Uses different algo need to match numpy
+    out_q_slice.copy_from_slice(q.transpose().as_slice());
+    out_r_slice.copy_from_slice(r.transpose().as_slice());
+}
+
+/// # Safety
+///
+/// `mat1` should point to a valid 2DArray of `f64` floats in row-major order
+#[no_mangle]
+pub unsafe extern "C" fn np_linalg_svd(
+    mat1: *mut InputMatrix,
+    outu: *mut InputMatrix,
+    outs: *mut InputMatrix,
+    outvh: *mut InputMatrix,
+) {
+    let mat1 = mat1.as_mut().unwrap();
+    let outu = outu.as_mut().unwrap();
+    let outs = outs.as_mut().unwrap();
+    let outvh = outvh.as_mut().unwrap();
+
+    if mat1.ndims != 2 {
+        artiq_raise!(
+            "ValueError",
+            "expected 2D Vector Input, but received {1}D input)",
+            0,
+            mat1.ndims as i64,
+            0
+        );
+    }
+
+    let dim1 = (*mat1).get_dims();
+    let outu_dim = (*outu).get_dims();
+    let outs_dim = (*outs).get_dims();
+    let outvh_dim = (*outvh).get_dims();
+
+    let data_slice1 = slice::from_raw_parts_mut(mat1.data, dim1[0] * dim1[1]);
+    let out_u_slice = slice::from_raw_parts_mut(outu.data, outu_dim[0] * outu_dim[1]);
+    let out_s_slice = slice::from_raw_parts_mut(outs.data, outs_dim[0]);
+    let out_vh_slice = slice::from_raw_parts_mut(outvh.data, outvh_dim[0] * outvh_dim[1]);
+
+    let matrix = DMatrix::from_row_slice(dim1[0], dim1[1], data_slice1);
+    let result = matrix.svd(true, true);
+    out_u_slice.copy_from_slice(result.u.unwrap().transpose().as_slice());
+    out_s_slice.copy_from_slice(result.singular_values.as_slice());
+    out_vh_slice.copy_from_slice(result.v_t.unwrap().transpose().as_slice());
+}
+
+/// # Safety
+///
+/// `mat1` should point to a valid 2DArray of `f64` floats in row-major order
+#[no_mangle]
+pub unsafe extern "C" fn np_linalg_inv(mat1: *mut InputMatrix, out: *mut InputMatrix) {
+    let mat1 = mat1.as_mut().unwrap();
+    let out = out.as_mut().unwrap();
+
+    if mat1.ndims != 2 {
+        artiq_raise!(
+            "ValueError",
+            "expected 2D Vector Input, but received {1}D input)",
+            0,
+            mat1.ndims as i64,
+            0
+        );
+    }
+    let dim1 = (*mat1).get_dims();
+
+    if dim1[0] != dim1[1] {
+        artiq_raise!(
+            "ValueError",
+            "last 2 dimensions of the array must be square: {1} != {2}",
+            0,
+            dim1[0] as i64,
+            dim1[1] as i64
+        );
+    }
+
+    let outdim = out.get_dims();
+    let out_slice = slice::from_raw_parts_mut(out.data, outdim[0] * outdim[1]);
+    let data_slice1 = slice::from_raw_parts_mut(mat1.data, dim1[0] * dim1[1]);
+
+    let matrix = DMatrix::from_row_slice(dim1[0], dim1[1], data_slice1);
+    if !matrix.is_invertible() {
+        artiq_raise!("LinAlgError", "no inverse for Singular Matrix");
+    }
+    let inv = matrix.try_inverse().unwrap();
+    out_slice.copy_from_slice(inv.transpose().as_slice());
+}
+
+/// # Safety
+///
+/// `mat1` should point to a valid 2DArray of `f64` floats in row-major order
+#[no_mangle]
+pub unsafe extern "C" fn np_linalg_pinv(mat1: *mut InputMatrix, out: *mut InputMatrix) {
+    let mat1 = mat1.as_mut().unwrap();
+    let out = out.as_mut().unwrap();
+
+    if mat1.ndims != 2 {
+        artiq_raise!(
+            "ValueError",
+            "expected 2D Vector Input, but received {1}D input)",
+            0,
+            mat1.ndims as i64,
+            0
+        );
+    }
+    let dim1 = (*mat1).get_dims();
+    let outdim = out.get_dims();
+    let out_slice = slice::from_raw_parts_mut(out.data, outdim[0] * outdim[1]);
+    let data_slice1 = slice::from_raw_parts_mut(mat1.data, dim1[0] * dim1[1]);
+
+    let matrix = DMatrix::from_row_slice(dim1[0], dim1[1], data_slice1);
+    let svd = matrix.svd(true, true);
+    let inv = svd.pseudo_inverse(1e-15);
+
+    match inv {
+        Ok(m) => {
+            out_slice.copy_from_slice(m.transpose().as_slice());
+        }
+        Err(_) => {
+            artiq_raise!("LinAlgError", "SVD computation does not converge");
+        }
+    }
+}
+
+/// # Safety
+///
+/// `mat1` should point to a valid 2DArray of `f64` floats in row-major order
+#[no_mangle]
+pub unsafe extern "C" fn np_linalg_matrix_power(mat1: *mut InputMatrix, mat2: *mut InputMatrix, out: *mut InputMatrix) {
+    let mat1 = mat1.as_mut().unwrap();
+    let mat2 = mat2.as_mut().unwrap();
+    let out = out.as_mut().unwrap();
+
+    if mat1.ndims != 2 {
+        artiq_raise!(
+            "ValueError",
+            "expected 2D Vector Input, but received {1}D input)",
+            0,
+            mat1.ndims as i64,
+            0
+        );
+    }
+
+    let dim1 = (*mat1).get_dims();
+    let power = slice::from_raw_parts_mut(mat2.data, 1);
+    let power = power[0];
+    let outdim = out.get_dims();
+    let out_slice = slice::from_raw_parts_mut(out.data, outdim[0] * outdim[1]);
+    let data_slice1 = slice::from_raw_parts_mut(mat1.data, dim1[0] * dim1[1]);
+    let mut abs_power = power;
+    if abs_power < 0.0 {
+        abs_power = abs_power * -1.0;
+    }
+    let matrix1 = DMatrix::from_row_slice(dim1[0], dim1[1], data_slice1);
+    if !matrix1.is_square() {
+        artiq_raise!(
+            "ValueError",
+            "last 2 dimensions of the array must be square: {1} != {2}",
+            0,
+            dim1[0] as i64,
+            dim1[1] as i64
+        );
+    }
+    let mut result = matrix1.pow(abs_power as u32);
+
+    if power < 0.0 {
+        if !matrix1.is_invertible() {
+            artiq_raise!("LinAlgError", "no inverse for Singular Matrix");
+        }
+        result = result.try_inverse().unwrap();
+    }
+    out_slice.copy_from_slice(result.transpose().as_slice());
+}
+
+/// # Safety
+///
+/// `mat1` should point to a valid 2DArray of `f64` floats in row-major order
+#[no_mangle]
+pub unsafe extern "C" fn np_linalg_det(mat1: *mut InputMatrix, out: *mut InputMatrix) {
+    let mat1 = mat1.as_mut().unwrap();
+    let out = out.as_mut().unwrap();
+
+    if mat1.ndims != 2 {
+        artiq_raise!(
+            "ValueError",
+            "expected 2D Vector Input, but received {1}D input)",
+            0,
+            mat1.ndims as i64,
+            0
+        );
+    }
+    let dim1 = (*mat1).get_dims();
+    let out_slice = slice::from_raw_parts_mut(out.data, 1);
+    let data_slice1 = slice::from_raw_parts_mut(mat1.data, dim1[0] * dim1[1]);
+
+    let matrix = DMatrix::from_row_slice(dim1[0], dim1[1], data_slice1);
+    if !matrix.is_square() {
+        artiq_raise!(
+            "ValueError",
+            "last 2 dimensions of the array must be square: {1} != {2}",
+            0,
+            dim1[0] as i64,
+            dim1[1] as i64
+        );
+    }
+    out_slice[0] = matrix.determinant();
+}
+
+/// # Safety
+///
+/// `mat1` should point to a valid 2DArray of `f64` floats in row-major order
+#[no_mangle]
+pub unsafe extern "C" fn sp_linalg_lu(mat1: *mut InputMatrix, out_l: *mut InputMatrix, out_u: *mut InputMatrix) {
+    let mat1 = mat1.as_mut().unwrap();
+    let out_l = out_l.as_mut().unwrap();
+    let out_u = out_u.as_mut().unwrap();
+
+    if mat1.ndims != 2 {
+        artiq_raise!(
+            "ValueError",
+            "expected 2D Vector Input, but received {1}D input)",
+            0,
+            mat1.ndims as i64,
+            0
+        );
+    }
+
+    let dim1 = (*mat1).get_dims();
+    let outl_dim = (*out_l).get_dims();
+    let outu_dim = (*out_u).get_dims();
+
+    let data_slice1 = slice::from_raw_parts_mut(mat1.data, dim1[0] * dim1[1]);
+    let out_l_slice = slice::from_raw_parts_mut(out_l.data, outl_dim[0] * outl_dim[1]);
+    let out_u_slice = slice::from_raw_parts_mut(out_u.data, outu_dim[0] * outu_dim[1]);
+
+    let matrix = DMatrix::from_row_slice(dim1[0], dim1[1], data_slice1);
+    let (_, l, u) = matrix.lu().unpack();
+
+    out_l_slice.copy_from_slice(l.transpose().as_slice());
+    out_u_slice.copy_from_slice(u.transpose().as_slice());
+}
+
+/// # Safety
+///
+/// `mat1` should point to a valid 2DArray of `f64` floats in row-major order
+#[no_mangle]
+pub unsafe extern "C" fn sp_linalg_schur(mat1: *mut InputMatrix, out_t: *mut InputMatrix, out_z: *mut InputMatrix) {
+    let mat1 = mat1.as_mut().unwrap();
+    let out_t = out_t.as_mut().unwrap();
+    let out_z = out_z.as_mut().unwrap();
+
+    if mat1.ndims != 2 {
+        artiq_raise!(
+            "ValueError",
+            "expected 2D Vector Input, but received {1}D input)",
+            0,
+            mat1.ndims as i64,
+            0
+        );
+    }
+
+    let dim1 = (*mat1).get_dims();
+
+    if dim1[0] != dim1[1] {
+        artiq_raise!(
+            "ValueError",
+            "last 2 dimensions of the array must be square: {1} != {2}",
+            0,
+            dim1[0] as i64,
+            dim1[1] as i64
+        );
+    }
+
+    let out_t_dim = (*out_t).get_dims();
+    let out_z_dim = (*out_z).get_dims();
+
+    let data_slice1 = slice::from_raw_parts_mut(mat1.data, dim1[0] * dim1[1]);
+    let out_t_slice = slice::from_raw_parts_mut(out_t.data, out_t_dim[0] * out_t_dim[1]);
+    let out_z_slice = slice::from_raw_parts_mut(out_z.data, out_z_dim[0] * out_z_dim[1]);
+
+    let matrix = DMatrix::from_row_slice(dim1[0], dim1[1], data_slice1);
+    let (z, t) = matrix.schur().unpack();
+
+    out_t_slice.copy_from_slice(t.transpose().as_slice());
+    out_z_slice.copy_from_slice(z.transpose().as_slice());
+}
+
+/// # Safety
+///
+/// `mat1` should point to a valid 2DArray of `f64` floats in row-major order
+#[no_mangle]
+pub unsafe extern "C" fn sp_linalg_hessenberg(
+    mat1: *mut InputMatrix,
+    out_h: *mut InputMatrix,
+    out_q: *mut InputMatrix,
+) {
+    let mat1 = mat1.as_mut().unwrap();
+    let out_h = out_h.as_mut().unwrap();
+    let out_q = out_q.as_mut().unwrap();
+
+    if mat1.ndims != 2 {
+        artiq_raise!(
+            "ValueError",
+            "expected 2D Vector Input, but received {1}D input)",
+            0,
+            mat1.ndims as i64,
+            0
+        );
+    }
+
+    let dim1 = (*mat1).get_dims();
+
+    if dim1[0] != dim1[1] {
+        artiq_raise!(
+            "ValueError",
+            "last 2 dimensions of the array must be square: {1} != {2}",
+            0,
+            dim1[0] as i64,
+            dim1[1] as i64
+        );
+    }
+
+    let out_h_dim = (*out_h).get_dims();
+    let out_q_dim = (*out_q).get_dims();
+
+    let data_slice1 = slice::from_raw_parts_mut(mat1.data, dim1[0] * dim1[1]);
+    let out_h_slice = slice::from_raw_parts_mut(out_h.data, out_h_dim[0] * out_h_dim[1]);
+    let out_q_slice = slice::from_raw_parts_mut(out_q.data, out_q_dim[0] * out_q_dim[1]);
+
+    let matrix = DMatrix::from_row_slice(dim1[0], dim1[1], data_slice1);
+    let (q, h) = matrix.hessenberg().unpack();
+
+    out_h_slice.copy_from_slice(h.transpose().as_slice());
+    out_q_slice.copy_from_slice(q.transpose().as_slice());
+}

src/libksupport/src/kernel/mod.rs

@@ -13,6 +13,7 @@ mod dma;
 mod rpc;
 pub use dma::DmaRecorder;
 mod cache;
+mod linalg;
 #[cfg(has_drtio)]
 mod subkernel;
 

src/runtime/src/comms.rs

@@ -756,7 +756,6 @@ pub fn main(timer: GlobalTimer, cfg: Config) {
     moninj::start(timer, &aux_mutex, &drtio_routing_table);
 
     let control: Rc<RefCell<kernel::Control>> = Rc::new(RefCell::new(kernel::Control::start()));
-    let idle_kernel = Rc::new(cfg.read("idle_kernel").ok());
     if let Ok(buffer) = cfg.read("startup_kernel") {
         info!("Loading startup kernel...");
         let routing_table = drtio_routing_table.borrow();
@@ -783,13 +782,26 @@ pub fn main(timer: GlobalTimer, cfg: Config) {
         }
     }
 
-    mgmt::start(cfg, Some((&aux_mutex, &drtio_routing_table, timer)));
+    let cfg = Rc::new(cfg);
+    let restart_idle = Rc::new(Semaphore::new(1, 1));
+    mgmt::start(cfg.clone(), restart_idle.clone(), Some((&aux_mutex, &drtio_routing_table, timer)));
 
     task::spawn(async move {
         let connection = Rc::new(Semaphore::new(1, 1));
         let terminate = Rc::new(Semaphore::new(0, 1));
+        let can_restart_idle = Rc::new(Semaphore::new(1, 1));
+        let restart_idle = restart_idle.clone();
         loop {
-            let mut stream = TcpStream::accept(1381, 0x10_000, 0x10_000).await.unwrap();
+            let control = control.clone();
+            let mut maybe_stream = select_biased! {
+                s = (async {
+                        TcpStream::accept(1381, 0x10_000, 0x10_000).await.unwrap()
+                    }).fuse() => Some(s),
+                _ = (async {
+                        restart_idle.async_wait().await;
+                        can_restart_idle.async_wait().await;
+                    }).fuse() => None
+            };
 
             if connection.try_wait().is_none() {
                 // there is an existing connection
@@ -797,47 +809,58 @@ pub fn main(timer: GlobalTimer, cfg: Config) {
                 connection.async_wait().await;
             }
 
+            let maybe_idle_kernel = cfg.read("idle_kernel").ok();
+            if maybe_idle_kernel.is_none() && maybe_stream.is_none() {
+                control.borrow_mut().restart(); // terminate idle kernel if running
+            }
+
             let control = control.clone();
-            let idle_kernel = idle_kernel.clone();
             let connection = connection.clone();
             let terminate = terminate.clone();
+            let can_restart_idle = can_restart_idle.clone();
             let up_destinations = up_destinations.clone();
             let aux_mutex = aux_mutex.clone();
             let routing_table = drtio_routing_table.clone();
 
             // we make sure the value of terminate is 0 before we start
             let _ = terminate.try_wait();
+            let _ = can_restart_idle.try_wait();
             task::spawn(async move {
                 let routing_table = routing_table.borrow();
                 select_biased! {
                     _ = (async {
-                        let _ = handle_connection(&mut stream, control.clone(), &up_destinations, &aux_mutex, &routing_table, timer)
-                            .await
-                            .map_err(|e| warn!("connection terminated: {}", e));
-                        if let Some(buffer) = &*idle_kernel {
-                            info!("Loading idle kernel");
-                            let res = handle_flash_kernel(&buffer, &control, &up_destinations,  &aux_mutex, &routing_table, timer)
-                                .await;
-                            match res {
-                                #[cfg(has_drtio)]
-                                Err(Error::DestinationDown) => {
-                                    let mut countdown = timer.countdown();
-                                    delay(&mut countdown, Milliseconds(500)).await;
+                        if let Some(stream) = &mut maybe_stream {
+                            let _ = handle_connection(stream, control.clone(), &up_destinations, &aux_mutex, &routing_table, timer)
+                                .await
+                                .map_err(|e| warn!("connection terminated: {}", e));
+                        }
+                        can_restart_idle.signal();
+                        match maybe_idle_kernel {
+                            Some(buffer) => {
+                                loop {
+                                    info!("loading idle kernel");
+                                    match handle_flash_kernel(&buffer, &control, &up_destinations, &aux_mutex, &routing_table, timer).await {
+                                        Ok(_) => {
+                                            info!("running idle kernel");
+                                            match handle_run_kernel(None, &control, &up_destinations, &aux_mutex, &routing_table, timer).await {
+                                                Ok(_) => info!("idle kernel finished"),
+                                                Err(_) => warn!("idle kernel running error")
+                                            }
+                                        },
+                                        Err(_) => warn!("idle kernel loading error")
+                                    }
                                 }
-                                Err(_) => warn!("error loading idle kernel"),
-                                _ => (),
-                            }
-                            info!("Running idle kernel");
-                            let _ = handle_run_kernel(None, &control, &up_destinations, &aux_mutex, &routing_table, timer)
-                                .await.map_err(|_| warn!("error running idle kernel"));
-                            info!("Idle kernel terminated");
+                            },
+                            None => info!("no idle kernel found")
                         }
                     }).fuse() => (),
                     _ = terminate.async_wait().fuse() => ()
                 }
                 connection.signal();
-                let _ = stream.flush().await;
-                let _ = stream.abort().await;
+                if let Some(stream) = maybe_stream {
+                    let _ = stream.flush().await;
+                    let _ = stream.abort().await;
+                }
             });
         }
     });
@@ -886,7 +909,8 @@ pub fn soft_panic_main(timer: GlobalTimer, cfg: Config) -> ! {
 
     Sockets::init(32);
 
-    mgmt::start(cfg, None);
+    let dummy = Rc::new(Semaphore::new(0, 1));
+    mgmt::start(Rc::new(cfg), dummy, None);
 
     // getting eth settings disables the LED as it resets GPIO
     // need to re-enable it here

src/runtime/src/mgmt.rs

@@ -7,7 +7,7 @@ use libboard_artiq::{drtio_routing::RoutingTable,
                      logger::{BufferLogger, LogBufferRef}};
 use libboard_zynq::{smoltcp, timer::GlobalTimer};
 use libconfig::Config;
-use libcortex_a9::mutex::Mutex;
+use libcortex_a9::{mutex::Mutex, semaphore::Semaphore};
 use log::{self, debug, error, info, warn};
 use num_derive::FromPrimitive;
 use num_traits::FromPrimitive;
@@ -234,6 +234,8 @@ mod remote_coremgmt {
             *guard += 1;
             *guard
         };
+        let mut buffer = Vec::new();
+
         loop {
             if id != *pull_id.borrow() {
                 // another connection attempts to pull the log...
@@ -254,8 +256,13 @@ mod remote_coremgmt {
             .await;
 
             match reply {
-                Ok(Packet::CoreMgmtGetLogReply { last: _, length, data }) => {
-                    write_chunk(stream, &data[..length as usize]).await?;
+                Ok(Packet::CoreMgmtGetLogReply { last, length, data }) => {
+                    buffer.extend(&data[..length as usize]);
+                    if last {
+                        write_chunk(stream, &buffer).await?;
+                        buffer.clear();
+                        task::r#yield().await;
+                    }
                 }
                 Ok(packet) => {
                     error!("received unexpected aux packet: {:?}", packet);
@@ -423,6 +430,7 @@ mod remote_coremgmt {
         _cfg: &Rc<Config>,
         key: &String,
         value: Vec<u8>,
+        _restart_idle: &Rc<Semaphore>,
     ) -> Result<()> {
         let mut message = Vec::with_capacity(key.len() + value.len() + 4 * 2);
         message.write_string(key).unwrap();
@@ -471,6 +479,7 @@ mod remote_coremgmt {
         destination: u8,
         _cfg: &Rc<Config>,
         key: &String,
+        _restart_idle: &Rc<Semaphore>,
     ) -> Result<()> {
         let mut config_key: [u8; MASTER_PAYLOAD_MAX_SIZE] = [0; MASTER_PAYLOAD_MAX_SIZE];
         let len = key.len();
@@ -752,10 +761,13 @@ mod local_coremgmt {
         Ok(())
     }
 
-    pub async fn config_write(stream: &mut TcpStream, cfg: &Rc<Config>, key: &String, value: Vec<u8>) -> Result<()> {
+    pub async fn config_write(stream: &mut TcpStream, cfg: &Rc<Config>, key: &String, value: Vec<u8>, restart_idle: &Rc<Semaphore>) -> Result<()> {
         let value = cfg.write(&key, value);
         if value.is_ok() {
             debug!("write success");
+            if key == "idle_kernel" {
+                restart_idle.signal();
+            }
             write_i8(stream, Reply::Success as i8).await?;
         } else {
             // this is an error because we do not expect write to fail
@@ -765,10 +777,14 @@ mod local_coremgmt {
         Ok(())
     }
 
-    pub async fn config_remove(stream: &mut TcpStream, cfg: &Rc<Config>, key: &String) -> Result<()> {
+    pub async fn config_remove(stream: &mut TcpStream, cfg: &Rc<Config>, key: &String, restart_idle: &Rc<Semaphore>) -> Result<()> {
+        debug!("erase key: {}", key);
         let value = cfg.remove(&key);
         if value.is_ok() {
             debug!("erase success");
+            if key == "idle_kernel" {
+                restart_idle.signal();
+            }
             write_i8(stream, Reply::Success as i8).await?;
         } else {
             warn!("erase failed");
@@ -837,6 +853,7 @@ async fn handle_connection(
     stream: &mut TcpStream,
     pull_id: Rc<RefCell<u32>>,
     cfg: Rc<Config>,
+    restart_idle: Rc<Semaphore>,
     _drtio_tuple: Option<(&Rc<Mutex<bool>>, &RoutingTable, GlobalTimer)>,
 ) -> Result<()> {
     if !expect(&stream, b"ARTIQ management\n").await? {
@@ -877,11 +894,11 @@ async fn handle_connection(
                     buffer.set_len(len);
                 }
                 read_chunk(stream, &mut buffer).await?;
-                process!(stream, _drtio_tuple, _destination, config_write, &cfg, &key, buffer)
+                process!(stream, _drtio_tuple, _destination, config_write, &cfg, &key, buffer, &restart_idle)
             }
             Request::ConfigRemove => {
                 let key = read_key(stream).await?;
-                process!(stream, _drtio_tuple, _destination, config_remove, &cfg, &key)
+                process!(stream, _drtio_tuple, _destination, config_remove, &cfg, &key, &restart_idle)
             }
             Request::Reboot => {
                 process!(stream, _drtio_tuple, _destination, reboot)
@@ -909,17 +926,16 @@ async fn handle_connection(
     }
 }
 
-pub fn start(cfg: Config, drtio_tuple: Option<(&Rc<Mutex<bool>>, &Rc<RefCell<RoutingTable>>, GlobalTimer)>) {
+pub fn start(cfg: Rc<Config>, restart_idle: Rc<Semaphore>, drtio_tuple: Option<(&Rc<Mutex<bool>>, &Rc<RefCell<RoutingTable>>, GlobalTimer)>) {
     let drtio_tuple =
         drtio_tuple.map(|(aux_mutex, routing_table, timer)| (aux_mutex.clone(), routing_table.clone(), timer));
     task::spawn(async move {
         let pull_id = Rc::new(RefCell::new(0u32));
-        let cfg = Rc::new(cfg);
         loop {
             let mut stream = TcpStream::accept(1380, 2048, 2048).await.unwrap();
             let pull_id = pull_id.clone();
             let cfg = cfg.clone();
-
+            let restart_idle = restart_idle.clone();
             let drtio_tuple = drtio_tuple.clone();
             task::spawn(async move {
                 info!("received connection");
@@ -931,7 +947,7 @@ pub fn start(cfg: Config, drtio_tuple: Option<(&Rc<Mutex<bool>>, &Rc<RefCell<Rou
                 let drtio_tuple = drtio_tuple
                     .as_ref()
                     .map(|(aux_mutex, routing_table, timer)| (*aux_mutex, routing_table.deref(), *timer));
-                let _ = handle_connection(&mut stream, pull_id, cfg, drtio_tuple)
+                let _ = handle_connection(&mut stream, pull_id, cfg, restart_idle, drtio_tuple)
                     .await
                     .map_err(|e| warn!("connection terminated: {:?}", e));
                 let _ = stream.flush().await;

src/runtime/src/moninj.rs

@@ -102,7 +102,7 @@ mod remote_moninj {
         overrd: i8,
         value: i8,
     ) {
-        let _lock = aux_mutex.lock();
+        let _lock = aux_mutex.async_lock().await;
         drtioaux_async::send(
             linkno,
             &drtioaux_async::Packet::InjectionRequest {

src/satman/src/main.rs

@@ -1030,10 +1030,7 @@ fn process_aux_packet(
                 timer
             );
             let mut data_slice = [0; SAT_PAYLOAD_MAX_SIZE];
-            let meta = core_manager.log_get_slice(&mut data_slice);
-            if clear && meta.status.is_first() {
-                mgmt::clear_log();
-            }
+            let meta = core_manager.log_get_slice(&mut data_slice, clear);
             drtioaux::send(
                 0,
                 &drtioaux::Packet::CoreMgmtGetLogReply {
@@ -1098,7 +1095,7 @@ fn process_aux_packet(
             );
 
             if let Ok(level_filter) = mgmt::byte_to_level_filter(log_level) {
-                info!("Changing log level to {}", level_filter);
+                info!("Changing UART log level to {}", level_filter);
                 unsafe {
                     logger::BufferLogger::get_logger()
                         .as_ref()

src/satman/src/mgmt.rs

@@ -27,7 +27,7 @@ pub fn byte_to_level_filter(level_byte: u8) -> Result<LevelFilter> {
     })
 }
 
-fn get_logger_buffer_pred() -> LogBufferRef<'static> {
+fn get_logger_buffer() -> LogBufferRef<'static> {
     let logger = unsafe { BufferLogger::get_logger().as_mut().unwrap() };
     loop {
         if let Some(buffer_ref) = logger.buffer() {
@@ -36,10 +36,6 @@ fn get_logger_buffer_pred() -> LogBufferRef<'static> {
     }
 }
 
-fn get_logger_buffer() -> LogBufferRef<'static> {
-    get_logger_buffer_pred()
-}
-
 pub fn clear_log() {
     let mut buffer = get_logger_buffer();
     buffer.clear();
@@ -64,10 +60,14 @@ impl<'a> Manager<'_> {
         }
     }
 
-    pub fn log_get_slice(&mut self, data_slice: &mut [u8; SAT_PAYLOAD_MAX_SIZE]) -> SliceMeta {
+    pub fn log_get_slice(&mut self, data_slice: &mut [u8; SAT_PAYLOAD_MAX_SIZE], consume: bool) -> SliceMeta {
         // Populate buffer if depleted
         if self.last_log.at_end() {
-            self.last_log.extend(get_logger_buffer().extract().as_bytes());
+            let mut buffer = get_logger_buffer();
+            self.last_log.extend(buffer.extract().as_bytes());
+            if consume {
+                buffer.clear();
+            }
         }
 
         self.last_log.get_slice_satellite(data_slice)