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changeset 4325:bf0932baf75c

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6466149 Long ph_mutex[] holdtimes in page_hashout() mediated by vph_mutex holds in vpn_vplist_dirty
author qiao
date Fri, 25 May 2007 09:06:14 -0700
parents 696de332c6cf
children 3c27e4b80d13
files usr/src/uts/common/vm/page.h usr/src/uts/common/vm/page_lock.c
diffstat 2 files changed, 18 insertions(+), 0 deletions(-) [+]
line wrap: on
line diff
--- a/usr/src/uts/common/vm/page.h	Fri May 25 07:26:17 2007 -0700
+++ b/usr/src/uts/common/vm/page.h	Fri May 25 09:06:14 2007 -0700
@@ -539,6 +539,18 @@
  * shifting/summing are fast register to register operations with no additional
  * memory references).
  */
+#if defined(_LP64)
+
+#if NCPU < 4
+#define	PH_TABLE_SIZE	128
+#define	VP_SHIFT	7
+#else
+#define	PH_TABLE_SIZE	1024
+#define	VP_SHIFT	9
+#endif
+
+#else	/* 32 bits */
+
 #if NCPU < 4
 #define	PH_TABLE_SIZE	16
 #define	VP_SHIFT	7
@@ -547,6 +559,8 @@
 #define	VP_SHIFT	9
 #endif
 
+#endif	/* _LP64 */
+
 /*
  * The amount to use for the successive shifts in the hash function below.
  * The actual value is LOG2(PH_TABLE_SIZE), so that as many bits as
--- a/usr/src/uts/common/vm/page_lock.c	Fri May 25 07:26:17 2007 -0700
+++ b/usr/src/uts/common/vm/page_lock.c	Fri May 25 09:06:14 2007 -0700
@@ -131,7 +131,11 @@
  * XX64	VPH_TABLE_SIZE and VP_HASH_FUNC might break in 64 bit world.
  *	Need to review again.
  */
+#if defined(_LP64)
+#define	VPH_TABLE_SIZE  (1 << (VP_SHIFT + 3))
+#else	/* 32 bits */
 #define	VPH_TABLE_SIZE	(2 << VP_SHIFT)
+#endif
 
 #define	VP_HASH_FUNC(vp) \
 	((((uintptr_t)(vp) >> 6) + \