diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c index fa7d813b04c69f212b5835007c2a9a2885983567..94f1b91249398e03ee1ceb3b74fa76e487e1fad7 100644 --- a/kernel/trace/trace.c +++ b/kernel/trace/trace.c @@ -4156,7 +4156,7 @@ bool tracing_is_disabled(void) * Open and update trace_array ref count. * Must have the current trace_array passed to it. */ -static int tracing_open_generic_tr(struct inode *inode, struct file *filp) +int tracing_open_generic_tr(struct inode *inode, struct file *filp) { struct trace_array *tr = inode->i_private; diff --git a/kernel/trace/trace.h b/kernel/trace/trace.h index f801d154ff6a3bb71950c215d8598c9a9a5acbe0..854dbf4050f8e29903ef42318316e01244cd8cf1 100644 --- a/kernel/trace/trace.h +++ b/kernel/trace/trace.h @@ -681,6 +681,7 @@ void tracing_reset_online_cpus(struct trace_buffer *buf); void tracing_reset_current(int cpu); void tracing_reset_all_online_cpus(void); int tracing_open_generic(struct inode *inode, struct file *filp); +int tracing_open_generic_tr(struct inode *inode, struct file *filp); bool tracing_is_disabled(void); bool tracer_tracing_is_on(struct trace_array *tr); void tracer_tracing_on(struct trace_array *tr); diff --git a/kernel/trace/trace_events.c b/kernel/trace/trace_events.c index b89cdfe20bc1626b1c4632c6bfcace5eedbfe1ef..9613a757c90270d05bcd6c1bc775d162c2668d60 100644 --- a/kernel/trace/trace_events.c +++ b/kernel/trace/trace_events.c @@ -1440,28 +1440,17 @@ static int system_tr_open(struct inode *inode, struct file *filp) struct trace_array *tr = inode->i_private; int ret; - if (tracing_is_disabled()) - return -ENODEV; - - if (trace_array_get(tr) < 0) - return -ENODEV; - /* Make a temporary dir that has no system but points to tr */ dir = kzalloc(sizeof(*dir), GFP_KERNEL); - if (!dir) { - trace_array_put(tr); + if (!dir) return -ENOMEM; - } - - dir->tr = tr; - ret = tracing_open_generic(inode, filp); + ret = tracing_open_generic_tr(inode, filp); if (ret < 0) { - trace_array_put(tr); kfree(dir); return ret; } - + dir->tr = tr; filp->private_data = dir; return 0;