- Remove unnecessary synchronization from sf_buf_init(). (There is only

   one active CPU when sf_buf_init() is performed.)

7 files changed, 0 insertions, 14 deletions

diff --git a/sys/alpha/alpha/vm_machdep.c b/sys/alpha/alpha/vm_machdep.c
index 3518880..071400e 100644
--- a/sys/alpha/alpha/vm_machdep.c
+++ b/sys/alpha/alpha/vm_machdep.c
@@ -395,14 +395,12 @@ sf_buf_init(void *arg)
 	int i;
 
 	mtx_init(&sf_freelist.sf_lock, "sf_bufs list lock", NULL, MTX_DEF);
-	mtx_lock(&sf_freelist.sf_lock);
 	SLIST_INIT(&sf_freelist.sf_head);
 	sf_bufs = malloc(nsfbufs * sizeof(struct sf_buf), M_TEMP,
 	    M_NOWAIT | M_ZERO);
 	for (i = 0; i < nsfbufs; i++)
 		SLIST_INSERT_HEAD(&sf_freelist.sf_head, &sf_bufs[i], free_list);
 	sf_buf_alloc_want = 0;
-	mtx_unlock(&sf_freelist.sf_lock);
 }
 
 /*
diff --git a/sys/amd64/amd64/vm_machdep.c b/sys/amd64/amd64/vm_machdep.c
index 7ddf920..9b6bc1f 100644
--- a/sys/amd64/amd64/vm_machdep.c
+++ b/sys/amd64/amd64/vm_machdep.c
@@ -375,14 +375,12 @@ sf_buf_init(void *arg)
 	int i;
 
 	mtx_init(&sf_freelist.sf_lock, "sf_bufs list lock", NULL, MTX_DEF);
-	mtx_lock(&sf_freelist.sf_lock);
 	SLIST_INIT(&sf_freelist.sf_head);
 	sf_bufs = malloc(nsfbufs * sizeof(struct sf_buf), M_TEMP,
 	    M_NOWAIT | M_ZERO);
 	for (i = 0; i < nsfbufs; i++)
 		SLIST_INSERT_HEAD(&sf_freelist.sf_head, &sf_bufs[i], free_list);
 	sf_buf_alloc_want = 0;
-	mtx_unlock(&sf_freelist.sf_lock);
 }
 
 /*
diff --git a/sys/i386/i386/vm_machdep.c b/sys/i386/i386/vm_machdep.c
index 7542af6..19e3b39 100644
--- a/sys/i386/i386/vm_machdep.c
+++ b/sys/i386/i386/vm_machdep.c
@@ -576,7 +576,6 @@ sf_buf_init(void *arg)
 	int i;
 
 	mtx_init(&sf_freelist.sf_lock, "sf_bufs list lock", NULL, MTX_DEF);
-	mtx_lock(&sf_freelist.sf_lock);
 	SLIST_INIT(&sf_freelist.sf_head);
 	sf_base = kmem_alloc_nofault(kernel_map, nsfbufs * PAGE_SIZE);
 	sf_bufs = malloc(nsfbufs * sizeof(struct sf_buf), M_TEMP,
@@ -586,7 +585,6 @@ sf_buf_init(void *arg)
 		SLIST_INSERT_HEAD(&sf_freelist.sf_head, &sf_bufs[i], free_list);
 	}
 	sf_buf_alloc_want = 0;
-	mtx_unlock(&sf_freelist.sf_lock);
 }
 
 /*
diff --git a/sys/ia64/ia64/vm_machdep.c b/sys/ia64/ia64/vm_machdep.c
index fa4c9be..e6d51ca 100644
--- a/sys/ia64/ia64/vm_machdep.c
+++ b/sys/ia64/ia64/vm_machdep.c
@@ -334,14 +334,12 @@ sf_buf_init(void *arg)
 	int i;
 
 	mtx_init(&sf_freelist.sf_lock, "sf_bufs list lock", NULL, MTX_DEF);
-	mtx_lock(&sf_freelist.sf_lock);
 	SLIST_INIT(&sf_freelist.sf_head);
 	sf_bufs = malloc(nsfbufs * sizeof(struct sf_buf), M_TEMP,
 	    M_NOWAIT | M_ZERO);
 	for (i = 0; i < nsfbufs; i++)
 		SLIST_INSERT_HEAD(&sf_freelist.sf_head, sf_bufs+i, free_list);
 	sf_buf_alloc_want = 0;
-	mtx_unlock(&sf_freelist.sf_lock);
 }
 
 /*
diff --git a/sys/powerpc/aim/vm_machdep.c b/sys/powerpc/aim/vm_machdep.c
index a53a03e..5293ed3 100644
--- a/sys/powerpc/aim/vm_machdep.c
+++ b/sys/powerpc/aim/vm_machdep.c
@@ -246,7 +246,6 @@ sf_buf_init(void *arg)
 	int i;
 
 	mtx_init(&sf_freelist.sf_lock, "sf_bufs list lock", NULL, MTX_DEF);
-	mtx_lock(&sf_freelist.sf_lock);
 	SLIST_INIT(&sf_freelist.sf_head);
 	sf_base = kmem_alloc_nofault(kernel_map, nsfbufs * PAGE_SIZE);
 	sf_bufs = malloc(nsfbufs * sizeof(struct sf_buf), M_TEMP,
@@ -256,7 +255,6 @@ sf_buf_init(void *arg)
 		SLIST_INSERT_HEAD(&sf_freelist.sf_head, &sf_bufs[i], free_list);
 	}
 	sf_buf_alloc_want = 0;
-	mtx_unlock(&sf_freelist.sf_lock);
 }
 
 /*
diff --git a/sys/powerpc/powerpc/vm_machdep.c b/sys/powerpc/powerpc/vm_machdep.c
index a53a03e..5293ed3 100644
--- a/sys/powerpc/powerpc/vm_machdep.c
+++ b/sys/powerpc/powerpc/vm_machdep.c
@@ -246,7 +246,6 @@ sf_buf_init(void *arg)
 	int i;
 
 	mtx_init(&sf_freelist.sf_lock, "sf_bufs list lock", NULL, MTX_DEF);
-	mtx_lock(&sf_freelist.sf_lock);
 	SLIST_INIT(&sf_freelist.sf_head);
 	sf_base = kmem_alloc_nofault(kernel_map, nsfbufs * PAGE_SIZE);
 	sf_bufs = malloc(nsfbufs * sizeof(struct sf_buf), M_TEMP,
@@ -256,7 +255,6 @@ sf_buf_init(void *arg)
 		SLIST_INSERT_HEAD(&sf_freelist.sf_head, &sf_bufs[i], free_list);
 	}
 	sf_buf_alloc_want = 0;
-	mtx_unlock(&sf_freelist.sf_lock);
 }
 
 /*
diff --git a/sys/sparc64/sparc64/vm_machdep.c b/sys/sparc64/sparc64/vm_machdep.c
index 23bd29e..e29b48a 100644
--- a/sys/sparc64/sparc64/vm_machdep.c
+++ b/sys/sparc64/sparc64/vm_machdep.c
@@ -373,7 +373,6 @@ sf_buf_init(void *arg)
 	int i;
 
 	mtx_init(&sf_freelist.sf_lock, "sf_bufs list lock", NULL, MTX_DEF);
-	mtx_lock(&sf_freelist.sf_lock);
 	SLIST_INIT(&sf_freelist.sf_head);
 	sf_base = kmem_alloc_nofault(kernel_map, nsfbufs * PAGE_SIZE);
 	sf_bufs = malloc(nsfbufs * sizeof(struct sf_buf), M_TEMP,
@@ -383,7 +382,6 @@ sf_buf_init(void *arg)
 		SLIST_INSERT_HEAD(&sf_freelist.sf_head, &sf_bufs[i], free_list);
 	}
 	sf_buf_alloc_want = 0;
-	mtx_unlock(&sf_freelist.sf_lock);
 }
 
 /*