diff --git a/drivers/android/vendor_hooks.c b/drivers/android/vendor_hooks.c index 8e4bb3950cca..9f895faa209b 100644 --- a/drivers/android/vendor_hooks.c +++ b/drivers/android/vendor_hooks.c @@ -60,6 +60,7 @@ #include #include #include +#include /* * Export tracepoints that act as a bare tracehook (ie: have no trace event @@ -314,4 +315,6 @@ EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_scmi_timeout_sync); EXPORT_TRACEPOINT_SYMBOL_GPL(android_rvh_find_new_ilb); EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_force_compatible_pre); EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_force_compatible_post); +EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_alloc_uid); +EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_free_user); EXPORT_TRACEPOINT_SYMBOL_GPL(android_rvh_set_balance_anon_file_reclaim); diff --git a/include/trace/hooks/user.h b/include/trace/hooks/user.h new file mode 100644 index 000000000000..b5b507ccd9c2 --- /dev/null +++ b/include/trace/hooks/user.h @@ -0,0 +1,23 @@ +/* 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 +#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 ab445fcc07aa..83adc37251fa 100644 --- a/kernel/user.c +++ b/kernel/user.c @@ -20,6 +20,8 @@ #include #include +#include + /* * userns count is 1 for root user, 1 for init_uts_ns, * and 1 for... ? @@ -139,6 +141,7 @@ static struct user_struct *uid_hash_find(kuid_t uid, struct hlist_head *hashent) 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); kmem_cache_free(uid_cachep, up); @@ -190,6 +193,7 @@ struct user_struct *alloc_uid(kuid_t uid) new->uid = uid; refcount_set(&new->__count, 1); + trace_android_vh_alloc_uid(new); ratelimit_state_init(&new->ratelimit, HZ, 100); ratelimit_set_flags(&new->ratelimit, RATELIMIT_MSG_ON_RELEASE);