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-rw-r--r--drivers/android/binder.c10
-rw-r--r--drivers/android/binder_alloc.c30
-rw-r--r--drivers/android/binderfs.c10
3 files changed, 33 insertions, 17 deletions
diff --git a/drivers/android/binder.c b/drivers/android/binder.c
index 71a40a4c54..8460458ebe 100644
--- a/drivers/android/binder.c
+++ b/drivers/android/binder.c
@@ -478,6 +478,16 @@ binder_enqueue_thread_work_ilocked(struct binder_thread *thread,
{
WARN_ON(!list_empty(&thread->waiting_thread_node));
binder_enqueue_work_ilocked(work, &thread->todo);
+
+ /* (e)poll-based threads require an explicit wakeup signal when
+ * queuing their own work; they rely on these events to consume
+ * messages without I/O block. Without it, threads risk waiting
+ * indefinitely without handling the work.
+ */
+ if (thread->looper & BINDER_LOOPER_STATE_POLL &&
+ thread->pid == current->pid && !thread->process_todo)
+ wake_up_interruptible_sync(&thread->wait);
+
thread->process_todo = true;
}
diff --git a/drivers/android/binder_alloc.c b/drivers/android/binder_alloc.c
index 34c27223cb..a56cbfd9ba 100644
--- a/drivers/android/binder_alloc.c
+++ b/drivers/android/binder_alloc.c
@@ -1055,11 +1055,7 @@ binder_shrink_scan(struct shrinker *shrink, struct shrink_control *sc)
NULL, sc->nr_to_scan);
}
-static struct shrinker binder_shrinker = {
- .count_objects = binder_shrink_count,
- .scan_objects = binder_shrink_scan,
- .seeks = DEFAULT_SEEKS,
-};
+static struct shrinker *binder_shrinker;
/**
* binder_alloc_init() - called by binder_open() for per-proc initialization
@@ -1079,19 +1075,29 @@ void binder_alloc_init(struct binder_alloc *alloc)
int binder_alloc_shrinker_init(void)
{
- int ret = list_lru_init(&binder_alloc_lru);
+ int ret;
- if (ret == 0) {
- ret = register_shrinker(&binder_shrinker, "android-binder");
- if (ret)
- list_lru_destroy(&binder_alloc_lru);
+ ret = list_lru_init(&binder_alloc_lru);
+ if (ret)
+ return ret;
+
+ binder_shrinker = shrinker_alloc(0, "android-binder");
+ if (!binder_shrinker) {
+ list_lru_destroy(&binder_alloc_lru);
+ return -ENOMEM;
}
- return ret;
+
+ binder_shrinker->count_objects = binder_shrink_count;
+ binder_shrinker->scan_objects = binder_shrink_scan;
+
+ shrinker_register(binder_shrinker);
+
+ return 0;
}
void binder_alloc_shrinker_exit(void)
{
- unregister_shrinker(&binder_shrinker);
+ shrinker_free(binder_shrinker);
list_lru_destroy(&binder_alloc_lru);
}
diff --git a/drivers/android/binderfs.c b/drivers/android/binderfs.c
index 81effec17b..1224ab7aa0 100644
--- a/drivers/android/binderfs.c
+++ b/drivers/android/binderfs.c
@@ -93,7 +93,7 @@ bool is_binderfs_device(const struct inode *inode)
/**
* binderfs_binder_device_create - allocate inode from super block of a
* binderfs mount
- * @ref_inode: inode from wich the super block will be taken
+ * @ref_inode: inode from which the super block will be taken
* @userp: buffer to copy information about new device for userspace to
* @req: struct binderfs_device as copied from userspace
*
@@ -152,7 +152,7 @@ static int binderfs_binder_device_create(struct inode *ref_inode,
goto err;
inode->i_ino = minor + INODE_OFFSET;
- inode->i_mtime = inode->i_atime = inode_set_ctime_current(inode);
+ simple_inode_init_ts(inode);
init_special_inode(inode, S_IFCHR | 0600,
MKDEV(MAJOR(binderfs_dev), minor));
inode->i_fop = &binder_fops;
@@ -431,7 +431,7 @@ static int binderfs_binder_ctl_create(struct super_block *sb)
}
inode->i_ino = SECOND_INODE;
- inode->i_mtime = inode->i_atime = inode_set_ctime_current(inode);
+ simple_inode_init_ts(inode);
init_special_inode(inode, S_IFCHR | 0600,
MKDEV(MAJOR(binderfs_dev), minor));
inode->i_fop = &binder_ctl_fops;
@@ -473,7 +473,7 @@ static struct inode *binderfs_make_inode(struct super_block *sb, int mode)
if (ret) {
ret->i_ino = iunique(sb, BINDERFS_MAX_MINOR + INODE_OFFSET);
ret->i_mode = mode;
- ret->i_atime = ret->i_mtime = inode_set_ctime_current(ret);
+ simple_inode_init_ts(ret);
}
return ret;
}
@@ -702,7 +702,7 @@ static int binderfs_fill_super(struct super_block *sb, struct fs_context *fc)
inode->i_ino = FIRST_INODE;
inode->i_fop = &simple_dir_operations;
inode->i_mode = S_IFDIR | 0755;
- inode->i_mtime = inode->i_atime = inode_set_ctime_current(inode);
+ simple_inode_init_ts(inode);
inode->i_op = &binderfs_dir_inode_operations;
set_nlink(inode, 2);