Macro static_branch_unlikely

macro_rules! static_branch_unlikely {
    ($key:path, $keytyp:ty, $field:ident) => { ... };
}

Branch based on a static key.

Takes three arguments:

• key - the path to the static variable containing the static_key.
• keytyp - the type of key.
• field - the name of the field of key that contains the static_key.

Safety

The macro must be used with a real static key defined by C.