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fs/shm: align memory size to cache line size

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Make sure the share memory takes the full cache line.

Signed-off-by: Neo Xu <neo.xu1990@gmail.com>
This commit is contained in:
Neo Xu
2024-10-27 02:13:01 +08:00
committed by Xiang Xiao
parent 9af5fc5d09
commit 8a70377fc4
1 changed files with 5 additions and 2 deletions
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fs/shm/shmfs_alloc.c
+5 -2
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@@ -28,6 +28,7 @@
#include <nuttx/arch.h> #include <nuttx/arch.h>
#include <nuttx/cache.h> #include <nuttx/cache.h>
#include <nuttx/nuttx.h>
#include <nuttx/kmalloc.h> #include <nuttx/kmalloc.h>
#include <nuttx/pgalloc.h> #include <nuttx/pgalloc.h>
@@ -54,7 +55,8 @@ FAR struct shmfs_object_s *shmfs_alloc_object(size_t length)
size_t cachesize = up_get_dcache_linesize(); size_t cachesize = up_get_dcache_linesize();
if (cachesize > 0) if (cachesize > 0)
{ {
object->paddr = fs_heap_memalign(cachesize, length); object->paddr = fs_heap_memalign(cachesize,
ALIGN_UP(length, cachesize));
} }
else else
{ {
@@ -78,7 +80,8 @@ FAR struct shmfs_object_s *shmfs_alloc_object(size_t length)
size_t cachesize = up_get_dcache_linesize(); size_t cachesize = up_get_dcache_linesize();
if (cachesize > 0) if (cachesize > 0)
{ {
object->paddr = kumm_memalign(cachesize, length); object->paddr = kumm_memalign(cachesize,
ALIGN_UP(length, cachesize));
} }
else else
{ {