Macro kernel_dbg 

macro_rules! kernel_dbg {
    () => { ... };
    ($val:expr) => { ... };
    ($val:expr,) => { ... };
    ($($val:expr),+ $(,)?) => { ... };
}

Macro for printing the value of a given expression for quick and dirty debugging.

Does not panic on failure to write - instead silently ignores errors.

See dbg! for full documentation.