diff options
author | alc <alc@FreeBSD.org> | 2002-07-11 02:39:24 +0000 |
---|---|---|
committer | alc <alc@FreeBSD.org> | 2002-07-11 02:39:24 +0000 |
commit | 9d3ad1a89fc2d046c63c29aa65285aa17fc17fe7 (patch) | |
tree | 700fd7bd35493730f7d3626305df457d9e355504 | |
parent | b244d01c4d1f0d892a66a78485850cf28a6db242 (diff) | |
download | FreeBSD-src-9d3ad1a89fc2d046c63c29aa65285aa17fc17fe7.zip FreeBSD-src-9d3ad1a89fc2d046c63c29aa65285aa17fc17fe7.tar.gz |
o Add a "needs wakeup" flag to the vm_map for use by kmem_alloc_wait()
and kmem_free_wakeup(). Previously, kmem_free_wakeup() always
called wakeup(). In general, no one was sleeping.
o Export vm_map_unlock_and_wait() and vm_map_wakeup() from vm_map.c
for use in vm_kern.c.
-rw-r--r-- | sys/vm/vm_kern.c | 11 | ||||
-rw-r--r-- | sys/vm/vm_map.c | 5 | ||||
-rw-r--r-- | sys/vm/vm_map.h | 3 |
3 files changed, 13 insertions, 6 deletions
diff --git a/sys/vm/vm_kern.c b/sys/vm/vm_kern.c index 8da9d44..5f6ef3f 100644 --- a/sys/vm/vm_kern.c +++ b/sys/vm/vm_kern.c @@ -473,10 +473,10 @@ kmem_alloc_wait(map, size) vm_map_unlock(map); return (0); } - vm_map_unlock(map); - tsleep(map, PVM, "kmaw", 0); + map->needs_wakeup = TRUE; + vm_map_unlock_and_wait(map, FALSE); } - vm_map_insert(map, NULL, (vm_offset_t) 0, addr, addr + size, VM_PROT_ALL, VM_PROT_ALL, 0); + vm_map_insert(map, NULL, 0, addr, addr + size, VM_PROT_ALL, VM_PROT_ALL, 0); vm_map_unlock(map); return (addr); } @@ -497,7 +497,10 @@ kmem_free_wakeup(map, addr, size) vm_map_lock(map); (void) vm_map_delete(map, trunc_page(addr), round_page(addr + size)); - wakeup(map); + if (map->needs_wakeup) { + map->needs_wakeup = FALSE; + vm_map_wakeup(map); + } vm_map_unlock(map); } diff --git a/sys/vm/vm_map.c b/sys/vm/vm_map.c index 6ba4233..21b91d0 100644 --- a/sys/vm/vm_map.c +++ b/sys/vm/vm_map.c @@ -418,7 +418,7 @@ _vm_map_lock_downgrade(vm_map_t map, const char *file, int line) /* * vm_map_unlock_and_wait: */ -static __inline int +int vm_map_unlock_and_wait(vm_map_t map, boolean_t user_wait) { int retval; @@ -433,7 +433,7 @@ vm_map_unlock_and_wait(vm_map_t map, boolean_t user_wait) /* * vm_map_wakeup: */ -static __inline void +void vm_map_wakeup(vm_map_t map) { @@ -482,6 +482,7 @@ _vm_map_init(vm_map_t map, vm_offset_t min, vm_offset_t max) { map->header.next = map->header.prev = &map->header; + map->needs_wakeup = FALSE; map->system_map = 0; map->min_offset = min; map->max_offset = max; diff --git a/sys/vm/vm_map.h b/sys/vm/vm_map.h index 60367ac..41ccd5c 100644 --- a/sys/vm/vm_map.h +++ b/sys/vm/vm_map.h @@ -164,6 +164,7 @@ struct vm_map { struct lock lock; /* Lock for map data */ int nentries; /* Number of entries */ vm_size_t size; /* virtual size */ + u_char needs_wakeup; u_char system_map; /* Am I a system map? */ u_char infork; /* Am I in fork processing? */ vm_map_entry_t root; @@ -245,6 +246,8 @@ void _vm_map_unlock_read(vm_map_t map, const char *file, int line); int _vm_map_trylock(vm_map_t map, const char *file, int line); int _vm_map_lock_upgrade(vm_map_t map, const char *file, int line); void _vm_map_lock_downgrade(vm_map_t map, const char *file, int line); +int vm_map_unlock_and_wait(vm_map_t map, boolean_t user_wait); +void vm_map_wakeup(vm_map_t map); #define vm_map_lock(map) _vm_map_lock(map, LOCK_FILE, LOCK_LINE) #define vm_map_unlock(map) _vm_map_unlock(map, LOCK_FILE, LOCK_LINE) |