Module Name: src
Committed By: ad
Date: Sun Jan 12 13:37:26 UTC 2020
Modified Files:
src/sys/sys: param.h
Log Message:
Redo previous using COHERENCY_UNIT.
To generate a diff of this commit:
cvs rdiff -u -r1.638 -r1.639 src/sys/sys/param.h
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
Modified files:
Index: src/sys/sys/param.h
diff -u src/sys/sys/param.h:1.638 src/sys/sys/param.h:1.639
--- src/sys/sys/param.h:1.638 Sun Jan 12 13:19:32 2020
+++ src/sys/sys/param.h Sun Jan 12 13:37:26 2020
@@ -1,4 +1,4 @@
-/* $NetBSD: param.h,v 1.638 2020/01/12 13:19:32 ad Exp $ */
+/* $NetBSD: param.h,v 1.639 2020/01/12 13:37:26 ad Exp $ */
/*-
* Copyright (c) 1982, 1986, 1989, 1993
@@ -527,13 +527,16 @@ extern size_t coherency_unit;
#endif /* _KERNEL */
/*
- * Minimum alignment of "struct lwp" needed by the architecture.
- * This counts when packing a lock byte into a word alongside a
- * pointer to an LWP. We need a minimum of 32, but go with 64
- * to match the cache line size.
+ * Minimum alignment of "struct lwp" needed by the architecture. This
+ * counts when packing a lock byte into a word alongside a pointer to an
+ * LWP. We need a minimum of 32, but go with the cache line size.
*/
#ifndef MIN_LWP_ALIGNMENT
-#define MIN_LWP_ALIGNMENT 64
+# if COHERENCY_UNIT > 32
+# define MIN_LWP_ALIGNMENT COHERENCY_UNIT
+# else
+# define MIN_LWP_ALIGNMENT 32
+# endif
#endif
#endif /* !__ASSEMBLER__ */
