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[Qemu-devel] [PATCH 16/38] bitmap: Add bitmap_zero_extend operation
From: |
Juan Quintela |
Subject: |
[Qemu-devel] [PATCH 16/38] bitmap: Add bitmap_zero_extend operation |
Date: |
Tue, 17 Dec 2013 16:25:52 +0100 |
Signed-off-by: Juan Quintela <address@hidden>
Reviewed-by: Eric Blake <address@hidden>
---
include/qemu/bitmap.h | 9 +++++++++
1 file changed, 9 insertions(+)
diff --git a/include/qemu/bitmap.h b/include/qemu/bitmap.h
index afdd257..1babd5d 100644
--- a/include/qemu/bitmap.h
+++ b/include/qemu/bitmap.h
@@ -220,4 +220,13 @@ unsigned long bitmap_find_next_zero_area(unsigned long
*map,
unsigned long nr,
unsigned long align_mask);
+static inline unsigned long *bitmap_zero_extend(unsigned long *old,
+ long old_nbits, long new_nbits)
+{
+ long new_len = BITS_TO_LONGS(new_nbits) * sizeof(unsigned long);
+ unsigned long *new = g_realloc(old, new_len);
+ bitmap_clear(new, old_nbits, new_nbits - old_nbits);
+ return new;
+}
+
#endif /* BITMAP_H */
--
1.8.3.1
- [Qemu-devel] [PATCH 12/38] memory: use bit 2 for migration, (continued)
- [Qemu-devel] [PATCH 12/38] memory: use bit 2 for migration, Juan Quintela, 2013/12/17
- [Qemu-devel] [PATCH 13/38] memory: make sure that client is always inside range, Juan Quintela, 2013/12/17
- [Qemu-devel] [PATCH 11/38] memory: cpu_physical_memory_mask_dirty_range() always clears a single flag, Juan Quintela, 2013/12/17
- [Qemu-devel] [PATCH 14/38] memory: only resize dirty bitmap when memory size increases, Juan Quintela, 2013/12/17
- [Qemu-devel] [PATCH 15/38] memory: cpu_physical_memory_clear_dirty_flag() result is never used, Juan Quintela, 2013/12/17
- [Qemu-devel] [PATCH 16/38] bitmap: Add bitmap_zero_extend operation,
Juan Quintela <=
- [Qemu-devel] [PATCH 17/38] memory: split dirty bitmap into three, Juan Quintela, 2013/12/17
- [Qemu-devel] [PATCH 19/38] memory: unfold cpu_physical_memory_set_dirty() in its only user, Juan Quintela, 2013/12/17
- [Qemu-devel] [PATCH 18/38] memory: unfold cpu_physical_memory_clear_dirty_flag() in its only user, Juan Quintela, 2013/12/17
- [Qemu-devel] [PATCH 20/38] memory: unfold cpu_physical_memory_set_dirty_flag(), Juan Quintela, 2013/12/17