This constant will be used to expose some offset constants from the Rust Binder driver to tracepoints which are implemented in C. The constant is usually equal to sizeof(refcount_t), but may be larger if T has a large alignment.
Signed-off-by: Alice Ryhl <[email protected]> --- rust/kernel/sync/arc.rs | 3 +++ 1 file changed, 3 insertions(+) diff --git a/rust/kernel/sync/arc.rs b/rust/kernel/sync/arc.rs index 289f77abf415a2a52e039a2c0291413eda01217c..921e19333b895f0d971591c4753047d0248a3029 100644 --- a/rust/kernel/sync/arc.rs +++ b/rust/kernel/sync/arc.rs @@ -240,6 +240,9 @@ pub fn new(contents: T, flags: Flags) -> Result<Self, AllocError> { // `Arc` object. Ok(unsafe { Self::from_inner(inner) }) } + + /// The offset that the value is stored at. + pub const DATA_OFFSET: usize = core::mem::offset_of!(ArcInner<T>, data); } impl<T: ?Sized> Arc<T> { -- 2.52.0.158.g65b55ccf14-goog
