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| author | Mark Johnston <markj@FreeBSD.org> | 2023-05-09 14:07:15 +0000 |
|---|---|---|
| committer | Mark Johnston <markj@FreeBSD.org> | 2023-08-01 14:10:02 +0000 |
| commit | d0e4e53ebd6499d420c19426586eeeafec157150 (patch) | |
| tree | 7555ddd2d7558c0349f583b3deb3728e8e17dcfd | |
| parent | 135c2b71562f6a6b8e918cc66d5468342c198d02 (diff) | |
| download | src-d0e4e53ebd6499d420c19426586eeeafec157150.tar.gz src-d0e4e53ebd6499d420c19426586eeeafec157150.zip | |
vm_map: Add a macro to fetch a map entry's split boundary index
The resulting code is a bit more concise. No functional change
intended.
Reviewed by: alc, dougm, kib
MFC after: 1 week
Differential Revision: https://reviews.freebsd.org/D41249
| -rw-r--r-- | sys/vm/vm_fault.c | 3 | ||||
| -rw-r--r-- | sys/vm/vm_map.c | 13 | ||||
| -rw-r--r-- | sys/vm/vm_map.h | 4 |
3 files changed, 8 insertions, 12 deletions
diff --git a/sys/vm/vm_fault.c b/sys/vm/vm_fault.c index 8b4b8ebb7375..458772d976fc 100644 --- a/sys/vm/vm_fault.c +++ b/sys/vm/vm_fault.c @@ -539,8 +539,7 @@ vm_fault_populate(struct faultstate *fs) MPASS(pager_last < fs->first_object->size); vm_fault_restore_map_lock(fs); - bdry_idx = (fs->entry->eflags & MAP_ENTRY_SPLIT_BOUNDARY_MASK) >> - MAP_ENTRY_SPLIT_BOUNDARY_SHIFT; + bdry_idx = MAP_ENTRY_SPLIT_BOUNDARY_INDEX(fs->entry); if (fs->map->timestamp != fs->map_generation) { if (bdry_idx == 0) { vm_fault_populate_cleanup(fs->first_object, pager_first, diff --git a/sys/vm/vm_map.c b/sys/vm/vm_map.c index eb607d519247..8ab38ae2a087 100644 --- a/sys/vm/vm_map.c +++ b/sys/vm/vm_map.c @@ -2449,8 +2449,7 @@ vm_map_clip_start(vm_map_t map, vm_map_entry_t entry, vm_offset_t startaddr) KASSERT(entry->end > startaddr && entry->start < startaddr, ("%s: invalid clip of entry %p", __func__, entry)); - bdry_idx = (entry->eflags & MAP_ENTRY_SPLIT_BOUNDARY_MASK) >> - MAP_ENTRY_SPLIT_BOUNDARY_SHIFT; + bdry_idx = MAP_ENTRY_SPLIT_BOUNDARY_INDEX(entry); if (bdry_idx != 0) { if ((startaddr & (pagesizes[bdry_idx] - 1)) != 0) return (KERN_INVALID_ARGUMENT); @@ -2523,8 +2522,7 @@ vm_map_clip_end(vm_map_t map, vm_map_entry_t entry, vm_offset_t endaddr) KASSERT(entry->start < endaddr && entry->end > endaddr, ("%s: invalid clip of entry %p", __func__, entry)); - bdry_idx = (entry->eflags & MAP_ENTRY_SPLIT_BOUNDARY_MASK) >> - MAP_ENTRY_SPLIT_BOUNDARY_SHIFT; + bdry_idx = MAP_ENTRY_SPLIT_BOUNDARY_INDEX(entry); if (bdry_idx != 0) { if ((endaddr & (pagesizes[bdry_idx] - 1)) != 0) return (KERN_INVALID_ARGUMENT); @@ -3516,8 +3514,7 @@ vm_map_wire_locked(vm_map_t map, vm_offset_t start, vm_offset_t end, int flags) saved_start = entry->start; saved_end = entry->end; last_timestamp = map->timestamp; - bidx = (entry->eflags & MAP_ENTRY_SPLIT_BOUNDARY_MASK) - >> MAP_ENTRY_SPLIT_BOUNDARY_SHIFT; + bidx = MAP_ENTRY_SPLIT_BOUNDARY_INDEX(entry); incr = pagesizes[bidx]; vm_map_busy(map); vm_map_unlock(map); @@ -3715,9 +3712,7 @@ vm_map_sync( vm_map_unlock_read(map); return (KERN_INVALID_ARGUMENT); } - bdry_idx = (entry->eflags & - MAP_ENTRY_SPLIT_BOUNDARY_MASK) >> - MAP_ENTRY_SPLIT_BOUNDARY_SHIFT; + bdry_idx = MAP_ENTRY_SPLIT_BOUNDARY_INDEX(entry); if (bdry_idx != 0 && ((start & (pagesizes[bdry_idx] - 1)) != 0 || (end & (pagesizes[bdry_idx] - 1)) != 0)) { diff --git a/sys/vm/vm_map.h b/sys/vm/vm_map.h index c4ed36ce57ba..b974f52e51ed 100644 --- a/sys/vm/vm_map.h +++ b/sys/vm/vm_map.h @@ -154,8 +154,10 @@ struct vm_map_entry { #define MAP_ENTRY_HEADER 0x00080000 #define MAP_ENTRY_SPLIT_BOUNDARY_MASK 0x00300000 - #define MAP_ENTRY_SPLIT_BOUNDARY_SHIFT 20 +#define MAP_ENTRY_SPLIT_BOUNDARY_INDEX(entry) \ + (((entry)->eflags & MAP_ENTRY_SPLIT_BOUNDARY_MASK) >> \ + MAP_ENTRY_SPLIT_BOUNDARY_SHIFT) #ifdef _KERNEL static __inline u_char |