diff options
Diffstat (limited to 'kernel/notifier.c')
| -rw-r--r-- | kernel/notifier.c | 15 |
1 files changed, 5 insertions, 10 deletions
diff --git a/kernel/notifier.c b/kernel/notifier.c index ab75637fd904..2f9fe7c30287 100644 --- a/kernel/notifier.c +++ b/kernel/notifier.c @@ -5,14 +5,9 @@ #include <linux/notifier.h> #include <linux/rcupdate.h> #include <linux/vmalloc.h> -#include <linux/reboot.h> -/* - * Notifier list for kernel code which wants to be called - * at shutdown. This is used to stop any idling DMA operations - * and the like. - */ -BLOCKING_NOTIFIER_HEAD(reboot_notifier_list); +#define CREATE_TRACE_POINTS +#include <trace/events/notifier.h> /* * Notifier chain core routines. The exported routines below @@ -37,6 +32,7 @@ static int notifier_chain_register(struct notifier_block **nl, } n->next = *nl; rcu_assign_pointer(*nl, n); + trace_notifier_register((void *)n->notifier_call); return 0; } @@ -46,6 +42,7 @@ static int notifier_chain_unregister(struct notifier_block **nl, while ((*nl) != NULL) { if ((*nl) == n) { rcu_assign_pointer(*nl, n->next); + trace_notifier_unregister((void *)n->notifier_call); return 0; } nl = &((*nl)->next); @@ -84,6 +81,7 @@ static int notifier_call_chain(struct notifier_block **nl, continue; } #endif + trace_notifier_run((void *)nb->notifier_call); ret = nb->notifier_call(nb, val, v); if (nr_calls) @@ -456,7 +454,6 @@ int raw_notifier_call_chain(struct raw_notifier_head *nh, } EXPORT_SYMBOL_GPL(raw_notifier_call_chain); -#ifdef CONFIG_SRCU /* * SRCU notifier chain routines. Registration and unregistration * use a mutex, and call_chain is synchronized by SRCU (no locks). @@ -573,8 +570,6 @@ void srcu_init_notifier_head(struct srcu_notifier_head *nh) } EXPORT_SYMBOL_GPL(srcu_init_notifier_head); -#endif /* CONFIG_SRCU */ - static ATOMIC_NOTIFIER_HEAD(die_chain); int notrace notify_die(enum die_val val, const char *str, |