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tracing: make tracing_init_dentry() returns an integer instead of a d_entry pointer

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Current tracing_init_dentry() return a d_entry pointer, while is not
necessary. This function returns NULL on success or error on failure,
which means there is no valid d_entry pointer return.

Let's return 0 on success and negative value for error.

Link: https://lkml.kernel.org/r/20200712011036.70948-5-richard.weiyang@linux.alibaba.com

Signed-off-by: Wei Yang <richard.weiyang@linux.alibaba.com>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
This commit is contained in:
Wei Yang
2020-07-12 09:10:36 +08:00
committed by Steven Rostedt (VMware)
parent dc300d77b8
commit 22c36b1826
11 changed files with 57 additions and 61 deletions
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9
kernel/trace/trace_events_synth.c
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@@ -1757,7 +1757,6 @@ static const struct file_operations synth_events_fops = {
static __init int trace_events_synth_init(void)
{
struct dentry *entry = NULL;
struct dentry *d_tracer;
int err = 0;
err = dyn_event_register(&synth_event_ops);
@@ -1766,13 +1765,11 @@ static __init int trace_events_synth_init(void)
return err;
}
d_tracer = tracing_init_dentry();
if (IS_ERR(d_tracer)) {
err = PTR_ERR(d_tracer);
err = tracing_init_dentry();
if (err)
goto err;
}
entry = tracefs_create_file("synthetic_events", 0644, d_tracer,
entry = tracefs_create_file("synthetic_events", 0644, NULL,
NULL, &synth_events_fops);
if (!entry) {
err = -ENODEV;