diff options
Diffstat (limited to 'kernel/trace')
| -rw-r--r-- | kernel/trace/trace_events.c | 22 | ||||
| -rw-r--r-- | kernel/trace/trace_output.c | 16 | ||||
| -rw-r--r-- | kernel/trace/trace_output.h | 2 |
3 files changed, 20 insertions, 20 deletions
diff --git a/kernel/trace/trace_events.c b/kernel/trace/trace_events.c index a71cdc3c5df9..53582e982e51 100644 --- a/kernel/trace/trace_events.c +++ b/kernel/trace/trace_events.c @@ -1584,7 +1584,7 @@ int trace_add_event_call(struct ftrace_event_call *call) } /* - * Must be called under locking both of event_mutex and trace_event_mutex. + * Must be called under locking both of event_mutex and trace_event_sem. */ static void __trace_remove_event_call(struct ftrace_event_call *call) { @@ -1597,9 +1597,9 @@ static void __trace_remove_event_call(struct ftrace_event_call *call) void trace_remove_event_call(struct ftrace_event_call *call) { mutex_lock(&event_mutex); - down_write(&trace_event_mutex); + down_write(&trace_event_sem); __trace_remove_event_call(call); - up_write(&trace_event_mutex); + up_write(&trace_event_sem); mutex_unlock(&event_mutex); } @@ -1707,7 +1707,7 @@ static void trace_module_remove_events(struct module *mod) struct ftrace_event_call *call, *p; bool clear_trace = false; - down_write(&trace_event_mutex); + down_write(&trace_event_sem); list_for_each_entry_safe(call, p, &ftrace_events, list) { if (call->mod == mod) { if (call->flags & TRACE_EVENT_FL_WAS_ENABLED) @@ -1725,7 +1725,7 @@ static void trace_module_remove_events(struct module *mod) list_del(&file_ops->list); kfree(file_ops); } - up_write(&trace_event_mutex); + up_write(&trace_event_sem); /* * It is safest to reset the ring buffer if the module being unloaded @@ -2262,9 +2262,9 @@ int event_trace_add_tracer(struct dentry *parent, struct trace_array *tr) if (ret) goto out_unlock; - down_write(&trace_event_mutex); + down_write(&trace_event_sem); __trace_add_event_dirs(tr); - up_write(&trace_event_mutex); + up_write(&trace_event_sem); out_unlock: mutex_unlock(&event_mutex); @@ -2287,9 +2287,9 @@ early_event_add_tracer(struct dentry *parent, struct trace_array *tr) if (ret) goto out_unlock; - down_write(&trace_event_mutex); + down_write(&trace_event_sem); __trace_early_add_event_dirs(tr); - up_write(&trace_event_mutex); + up_write(&trace_event_sem); out_unlock: mutex_unlock(&event_mutex); @@ -2304,10 +2304,10 @@ int event_trace_del_tracer(struct trace_array *tr) mutex_lock(&event_mutex); - down_write(&trace_event_mutex); + down_write(&trace_event_sem); __trace_remove_event_dirs(tr); debugfs_remove_recursive(tr->event_dir); - up_write(&trace_event_mutex); + up_write(&trace_event_sem); tr->event_dir = NULL; diff --git a/kernel/trace/trace_output.c b/kernel/trace/trace_output.c index 19f48e7edc39..f475b2a7ac88 100644 --- a/kernel/trace/trace_output.c +++ b/kernel/trace/trace_output.c @@ -14,7 +14,7 @@ /* must be a power of 2 */ #define EVENT_HASHSIZE 128 -DECLARE_RWSEM(trace_event_mutex); +DECLARE_RWSEM(trace_event_sem); static struct hlist_head event_hash[EVENT_HASHSIZE] __read_mostly; @@ -826,12 +826,12 @@ static int trace_search_list(struct list_head **list) void trace_event_read_lock(void) { - down_read(&trace_event_mutex); + down_read(&trace_event_sem); } void trace_event_read_unlock(void) { - up_read(&trace_event_mutex); + up_read(&trace_event_sem); } /** @@ -854,7 +854,7 @@ int register_ftrace_event(struct trace_event *event) unsigned key; int ret = 0; - down_write(&trace_event_mutex); + down_write(&trace_event_sem); if (WARN_ON(!event)) goto out; @@ -909,14 +909,14 @@ int register_ftrace_event(struct trace_event *event) ret = event->type; out: - up_write(&trace_event_mutex); + up_write(&trace_event_sem); return ret; } EXPORT_SYMBOL_GPL(register_ftrace_event); /* - * Used by module code with the trace_event_mutex held for write. + * Used by module code with the trace_event_sem held for write. */ int __unregister_ftrace_event(struct trace_event *event) { @@ -931,9 +931,9 @@ int __unregister_ftrace_event(struct trace_event *event) */ int unregister_ftrace_event(struct trace_event *event) { - down_write(&trace_event_mutex); + down_write(&trace_event_sem); __unregister_ftrace_event(event); - up_write(&trace_event_mutex); + up_write(&trace_event_sem); return 0; } diff --git a/kernel/trace/trace_output.h b/kernel/trace/trace_output.h index af77870de278..127a9d8c8357 100644 --- a/kernel/trace/trace_output.h +++ b/kernel/trace/trace_output.h @@ -33,7 +33,7 @@ trace_print_lat_fmt(struct trace_seq *s, struct trace_entry *entry); /* used by module unregistering */ extern int __unregister_ftrace_event(struct trace_event *event); -extern struct rw_semaphore trace_event_mutex; +extern struct rw_semaphore trace_event_sem; #define MAX_MEMHEX_BYTES 8 #define HEX_CHARS (MAX_MEMHEX_BYTES*2 + 1) |