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From: Oleksandr Tymoshenko <gonzo@FreeBSD.org>
To: Perforce Change Reviews <perforce@FreeBSD.org>
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Subject: PERFORCE change 110482 for review
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http://perforce.freebsd.org/chv.cgi?CH=110482

Change 110482 by gonzo@gonzo_hq on 2006/11/24 14:51:19

	o Add mutex to pmap struct
	o Add macroses to handle pmap locking

Affected files ...

.. //depot/projects/mips2/src/sys/mips/include/pmap.h#7 edit

Differences ...

==== //depot/projects/mips2/src/sys/mips/include/pmap.h#7 (text+ko) ====

@@ -111,6 +111,10 @@
 
 #ifndef	LOCORE
 
+#include <sys/queue.h>
+#include <sys/_lock.h>
+#include <sys/_mutex.h>
+
 struct pv_entry;
 
 /*
@@ -144,6 +148,7 @@
 extern struct segtab *segbase;  /* current segtab base */
 
 typedef	struct pmap {
+	struct mtx		pm_mtx;
 	struct pmap_statistics	pm_stats;
 	int			pm_asid;
 	int			pm_asidgen;
@@ -160,6 +165,21 @@
 	LIST_ENTRY(pmap)	pm_list;	/* list of all pmaps. */
 } *pmap_t;
 
+#ifdef _KERNEL
+#define pmap_kernel() kernel_pmap
+
+#define	PMAP_ASSERT_LOCKED(pmap) \
+				mtx_assert(&(pmap)->pm_mtx, MA_OWNED)
+#define	PMAP_LOCK(pmap)		mtx_lock(&(pmap)->pm_mtx)
+#define	PMAP_LOCK_DESTROY(pmap)	mtx_destroy(&(pmap)->pm_mtx)
+#define	PMAP_LOCK_INIT(pmap)	mtx_init(&(pmap)->pm_mtx, "pmap", \
+				    NULL, MTX_DEF | MTX_DUPOK)
+#define	PMAP_OWNED(pmap)	mtx_owned(&(pmap)->pm_mtx)
+#define	PMAP_MTX(pmap)		(&(pmap)->pm_mtx)
+#define	PMAP_TRYLOCK(pmap)	mtx_trylock(&(pmap)->pm_mtx)
+#define	PMAP_UNLOCK(pmap)	mtx_unlock(&(pmap)->pm_mtx)
+#endif
+
 struct md_page {
 	int pv_list_count;
 	TAILQ_HEAD(,pv_entry)	pv_list;