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mm/mm_map: Give the mm_map as parameter to the mm_map functions

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This way the mappings can be modified for any vm area, not only the
process that is running.

Why? This allows mapping pages to kernel dynamically, this functionality
will be presented later.
This commit is contained in:
Ville Juven
2023-04-20 15:37:45 +03:00
committed by Xiang Xiao
parent 30bae2ca47
commit 53d4b9ed54
8 changed files with 42 additions and 36 deletions
Download Patch File Download Diff File Expand all files Collapse all files
mm/map/mm_map.c
+5 -6
View File
@@ -171,9 +171,8 @@ void mm_map_destroy(FAR struct mm_map_s *mm)
*
****************************************************************************/
int mm_map_add(FAR struct mm_map_entry_s *entry)
int mm_map_add(FAR struct mm_map_s *mm, FAR struct mm_map_entry_s *entry)
{
FAR struct mm_map_s *mm = get_current_mm();
FAR struct mm_map_entry_s *new_entry;
int ret;
@@ -214,10 +213,9 @@ int mm_map_add(FAR struct mm_map_entry_s *entry)
*
****************************************************************************/
FAR struct mm_map_entry_s *mm_map_next(
FAR struct mm_map_entry_s *mm_map_next(FAR struct mm_map_s *mm,
FAR const struct mm_map_entry_s *entry)
{
FAR struct mm_map_s *mm = get_current_mm();
FAR struct mm_map_entry_s *next_entry = NULL;
if (nxrmutex_lock(&mm->mm_map_mutex) == OK)
@@ -246,9 +244,10 @@ FAR struct mm_map_entry_s *mm_map_next(
*
****************************************************************************/
FAR struct mm_map_entry_s *mm_map_find(FAR const void *vaddr, size_t length)
FAR struct mm_map_entry_s *mm_map_find(FAR struct mm_map_s *mm,
FAR const void *vaddr,
size_t length)
{
FAR struct mm_map_s *mm = get_current_mm();
FAR struct mm_map_entry_s *found_entry = NULL;
if (nxrmutex_lock(&mm->mm_map_mutex) == OK)
mm/shm/shmat.c
+1 -1
View File
@@ -271,7 +271,7 @@ FAR void *shmat(int shmid, FAR const void *shmaddr, int shmflg)
entry.munmap = munmap_shm;
entry.priv.i = shmid;
ret = mm_map_add(&entry);
ret = mm_map_add(get_current_mm(), &entry);
if (ret < 0)
{
shmerr("ERROR: mm_map_add() failed\n");
mm/shm/shmdt.c
+1 -1
View File
@@ -85,7 +85,7 @@ int shmdt(FAR const void *shmaddr)
* shmaddr. The mapping is matched with just shmaddr == map->vaddr.
*/
entry = mm_map_find(shmaddr, 1);
entry = mm_map_find(get_current_mm(), shmaddr, 1);
if (entry && entry->vaddr == shmaddr)
{
DEBUGASSERT(entry->munmap);