diff --git a/drivers/android/vendor_hooks.c b/drivers/android/vendor_hooks.c index 2c9b441b5726..f32d16b6e9f3 100644 --- a/drivers/android/vendor_hooks.c +++ b/drivers/android/vendor_hooks.c @@ -74,6 +74,7 @@ #include #include #include +#include /* * Export tracepoints that act as a bare tracehook (ie: have no trace event @@ -572,3 +573,5 @@ EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_mem_cgroup_charge); EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_filemap_add_folio); EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_shrink_node); EXPORT_TRACEPOINT_SYMBOL_GPL(android_rvh_cpuset_fork); +EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_alloc_uid); +EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_free_user); diff --git a/include/trace/hooks/user.h b/include/trace/hooks/user.h new file mode 100644 index 000000000000..773eed2ea75a --- /dev/null +++ b/include/trace/hooks/user.h @@ -0,0 +1,22 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#undef TRACE_SYSTEM +#define TRACE_SYSTEM user +#undef TRACE_INCLUDE_PATH +#define TRACE_INCLUDE_PATH trace/hooks +#if !defined(_TRACE_HOOK_USER_H) || defined(TRACE_HEADER_MULTI_READ) +#define _TRACE_HOOK_USER_H +#include + +struct user_struct; +DECLARE_HOOK(android_vh_alloc_uid, + TP_PROTO(struct user_struct *user), + TP_ARGS(user)); + +DECLARE_HOOK(android_vh_free_user, + TP_PROTO(struct user_struct *up), + TP_ARGS(up)); + +#endif /* _TRACE_HOOK_USER_H */ +/* This part must be outside protection */ +#include + diff --git a/kernel/user.c b/kernel/user.c index 44155cae3493..2953e21df57f 100644 --- a/kernel/user.c +++ b/kernel/user.c @@ -21,6 +21,8 @@ #include #include +#include + #if IS_ENABLED(CONFIG_BINFMT_MISC) struct binfmt_misc init_binfmt_misc = { .entries = LIST_HEAD_INIT(init_binfmt_misc.entries), @@ -165,6 +167,7 @@ static void user_epoll_free(struct user_struct *up) static void free_user(struct user_struct *up, unsigned long flags) __releases(&uidhash_lock) { + trace_android_vh_free_user(up); uid_hash_remove(up); spin_unlock_irqrestore(&uidhash_lock, flags); user_epoll_free(up); @@ -217,6 +220,7 @@ struct user_struct *alloc_uid(kuid_t uid) new->uid = uid; refcount_set(&new->__count, 1); + trace_android_vh_alloc_uid(new); if (user_epoll_alloc(new)) { kmem_cache_free(uid_cachep, new); return NULL;