diff options
author | alc <alc@FreeBSD.org> | 1999-03-21 23:37:00 +0000 |
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committer | alc <alc@FreeBSD.org> | 1999-03-21 23:37:00 +0000 |
commit | 9b15de3986bc84687dd67af501a84c70507fb0e9 (patch) | |
tree | cba22d0e86c6aa5efd3d713fd868dbd11770e4bc /sys/vm/vm_map.c | |
parent | d52fa1be5c534a1bf9824f14d2f3bf7ff930fc09 (diff) | |
download | FreeBSD-src-9b15de3986bc84687dd67af501a84c70507fb0e9.zip FreeBSD-src-9b15de3986bc84687dd67af501a84c70507fb0e9.tar.gz |
Two changes:
Remove more (redundant) map timestamp increments from properly
synchronized routines. (Changed: vm_map_entry_link, vm_map_entry_unlink,
and vm_map_pageable.)
Micro-optimize vm_map_entry_link and vm_map_entry_unlink, eliminating
unnecessary dereferences. At the same time, converted them from macros
to inline functions.
Diffstat (limited to 'sys/vm/vm_map.c')
-rw-r--r-- | sys/vm/vm_map.c | 43 |
1 files changed, 24 insertions, 19 deletions
diff --git a/sys/vm/vm_map.c b/sys/vm/vm_map.c index eb6f8d6..824c6aa 100644 --- a/sys/vm/vm_map.c +++ b/sys/vm/vm_map.c @@ -61,7 +61,7 @@ * any improvements or extensions that they make and grant Carnegie the * rights to redistribute these changes. * - * $Id: vm_map.c,v 1.156 1999/03/09 08:00:17 alc Exp $ + * $Id: vm_map.c,v 1.157 1999/03/15 06:24:52 alc Exp $ */ /* @@ -318,22 +318,29 @@ vm_map_entry_create(map) * * Insert/remove entries from maps. */ -#define vm_map_entry_link(map, after_where, entry) \ - { \ - (map)->nentries++; \ - (map)->timestamp++; \ - (entry)->prev = (after_where); \ - (entry)->next = (after_where)->next; \ - (entry)->prev->next = (entry); \ - (entry)->next->prev = (entry); \ - } -#define vm_map_entry_unlink(map, entry) \ - { \ - (map)->nentries--; \ - (map)->timestamp++; \ - (entry)->next->prev = (entry)->prev; \ - (entry)->prev->next = (entry)->next; \ - } +static __inline void +vm_map_entry_link(vm_map_t map, + vm_map_entry_t after_where, + vm_map_entry_t entry) +{ + map->nentries++; + entry->prev = after_where; + entry->next = after_where->next; + entry->next->prev = entry; + after_where->next = entry; +} + +static __inline void +vm_map_entry_unlink(vm_map_t map, + vm_map_entry_t entry) +{ + vm_map_entry_t prev = entry->prev; + vm_map_entry_t next = entry->next; + + next->prev = prev; + prev->next = next; + map->nentries--; +} /* * SAVE_HINT: @@ -1679,7 +1686,6 @@ vm_map_pageable(map, start, end, new_pageable) entry->wired_count--; entry = entry->prev; } - map->timestamp++; vm_map_unlock(map); return (KERN_INVALID_ARGUMENT); } @@ -1748,7 +1754,6 @@ vm_map_pageable(map, start, end, new_pageable) vm_map_unlock(map); - map->timestamp++; return (KERN_SUCCESS); } |