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kernel: Add support for concurrent scanning of user data apps

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This commit is contained in:
ShirkNeko
2025-09-16 18:16:19 +08:00
parent 335ddc4432
commit 60d122c01b
2 changed files with 126 additions and 61 deletions
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16
kernel/user_data_scanner.h
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@@ -11,6 +11,7 @@
#define MAX_SUPPORTED_USERS 32 // Supports up to 32 users
#define SMALL_BUFFER_SIZE 64
#define SCHEDULE_INTERVAL 100
#define MAX_CONCURRENT_WORKERS 8
// https://docs.kernel.org/filesystems/porting.html
// filldir_t (readdir callbacks) calling conventions have changed. Instead of returning 0 or -E... it returns bool now. false means "no more" (as -E... used to) and true - "keep going" (as 0 in old calling conventions). Rationale: callers never looked at specific -E... values anyway. -> iterate_shared() instances require no changes at all, all filldir_t ones in the tree converted.
@@ -70,6 +71,17 @@ struct user_id_ctx {
size_t processed_count;
};
struct scan_work_item {
struct work_struct work;
uid_t user_id;
struct list_head *uid_list;
struct mutex *uid_list_mutex;
atomic_t *total_pkg_count;
atomic_t *total_error_count;
struct completion *work_completion;
atomic_t *remaining_workers;
};
int scan_user_data_for_uids(struct list_head *uid_list, bool scan_all_users);
FILLDIR_RETURN_TYPE scan_user_packages(struct dir_context *ctx, const char *name,
int namelen, loff_t off, u64 ino, unsigned int d_type);
@@ -79,8 +91,6 @@ static int process_deferred_paths(struct list_head *deferred_paths, struct list_
static int scan_primary_user_apps(struct list_head *uid_list, size_t *pkg_count,
size_t *error_count, struct work_buffers *work_buf);
static int get_all_active_users(struct work_buffers *work_buf, size_t *found_count);
static int scan_secondary_users_apps(struct list_head *uid_list, struct work_buffers *work_buf,
size_t user_count, size_t *total_pkg_count,
size_t *total_error_count);
static void scan_user_worker(struct work_struct *work);
#endif /* _KSU_USER_DATA_SCANNER_H_ */