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[RFC,V3,31/43] rv64ilp32_abi: maple_tree: Use BITS_PER_LONG instead of CONFIG_64BIT

Message ID 20250325121624.523258-32-guoren@kernel.org
State New
Headers show
Series rv64ilp32_abi: Build CONFIG_64BIT kernel-self with ILP32 ABI | expand

Commit Message

Guo Ren March 25, 2025, 12:16 p.m. UTC 
From: "Guo Ren (Alibaba DAMO Academy)" <guoren@kernel.org>

The Maple tree algorithm uses ulong type for each element. The
number of slots is based on BITS_PER_LONG for RV64ILP32 ABI, so
use BITS_PER_LONG instead of CONFIG_64BIT.

Signed-off-by: Guo Ren (Alibaba DAMO Academy) <guoren@kernel.org>
---
 include/linux/maple_tree.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
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Patch

diff --git a/include/linux/maple_tree.h b/include/linux/maple_tree.h
index cbbcd18d4186..ff6265b6468b 100644
--- a/include/linux/maple_tree.h
+++ b/include/linux/maple_tree.h
@@ -24,7 +24,7 @@ 
  *
  * Nodes in the tree point to their parent unless bit 0 is set.
  */
-#if defined(CONFIG_64BIT) || defined(BUILD_VDSO32_64)
+#if (BITS_PER_LONG == 64) || defined(BUILD_VDSO32_64)
 /* 64bit sizes */
 #define MAPLE_NODE_SLOTS	31	/* 256 bytes including ->parent */
 #define MAPLE_RANGE64_SLOTS	16	/* 256 bytes */