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authorRodrigo Vivi <[email protected]>2022-01-31 13:19:33 -0500
committerRodrigo Vivi <[email protected]>2022-01-31 13:19:33 -0500
commit063565aca3734de4e73639a0e460a58d9418b3cd (patch)
treefb2455b984f584a819defe6e5fe512a4b6fc33ae /include/linux/xarray.h
parent14683babf8ee356a232ee76b0acd332aef51fdc4 (diff)
parent26291c54e111ff6ba87a164d85d4a4e134b7315c (diff)
Merge drm/drm-next into drm-intel-next
Catch-up with 5.17-rc2 and trying to align with drm-intel-gt-next for a possible topic branch for merging the split of i915_regs... Signed-off-by: Rodrigo Vivi <[email protected]>
Diffstat (limited to 'include/linux/xarray.h')
-rw-r--r--include/linux/xarray.h18
1 files changed, 18 insertions, 0 deletions
diff --git a/include/linux/xarray.h b/include/linux/xarray.h
index a91e3d90df8a..d6d5da6ed735 100644
--- a/include/linux/xarray.h
+++ b/include/linux/xarray.h
@@ -1581,6 +1581,24 @@ static inline void xas_set(struct xa_state *xas, unsigned long index)
}
/**
+ * xas_advance() - Skip over sibling entries.
+ * @xas: XArray operation state.
+ * @index: Index of last sibling entry.
+ *
+ * Move the operation state to refer to the last sibling entry.
+ * This is useful for loops that normally want to see sibling
+ * entries but sometimes want to skip them. Use xas_set() if you
+ * want to move to an index which is not part of this entry.
+ */
+static inline void xas_advance(struct xa_state *xas, unsigned long index)
+{
+ unsigned char shift = xas_is_node(xas) ? xas->xa_node->shift : 0;
+
+ xas->xa_index = index;
+ xas->xa_offset = (index >> shift) & XA_CHUNK_MASK;
+}
+
+/**
* xas_set_order() - Set up XArray operation state for a multislot entry.
* @xas: XArray operation state.
* @index: Target of the operation.