diff options
author | Marcel Ziswiler <marcel.ziswiler@toradex.com> | 2020-05-21 00:54:36 +0200 |
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committer | Marcel Ziswiler <marcel.ziswiler@toradex.com> | 2020-05-21 00:54:36 +0200 |
commit | 135d39dcedcedd1f44ea0bba52f15ac5922c114f (patch) | |
tree | 12379fc8ef7489eaca1c7245f8bd6af74c619a8f /kernel/trace/trace_stat.c | |
parent | 187764bd111b27783b6d68ffb3b3dbb3a9bafd38 (diff) | |
parent | 1279cd128bba968ebe0a2df7f7ae38bae90250ef (diff) |
Merge remote-tracking branch 'remotes/fslc/4.9-2.3.x-imx' into toradex_4.9-2.3.x-imx-next
Conflicts:
sound/soc/codecs/sgtl5000.c
sound/soc/fsl/imx-sgtl5000.c
Diffstat (limited to 'kernel/trace/trace_stat.c')
-rw-r--r-- | kernel/trace/trace_stat.c | 31 |
1 files changed, 17 insertions, 14 deletions
diff --git a/kernel/trace/trace_stat.c b/kernel/trace/trace_stat.c index 413ff108fbd0..d19f2191960e 100644 --- a/kernel/trace/trace_stat.c +++ b/kernel/trace/trace_stat.c @@ -277,18 +277,22 @@ static int tracing_stat_init(void) d_tracing = tracing_init_dentry(); if (IS_ERR(d_tracing)) - return 0; + return -ENODEV; stat_dir = tracefs_create_dir("trace_stat", d_tracing); - if (!stat_dir) + if (!stat_dir) { pr_warn("Could not create tracefs 'trace_stat' entry\n"); + return -ENOMEM; + } return 0; } static int init_stat_file(struct stat_session *session) { - if (!stat_dir && tracing_stat_init()) - return -ENODEV; + int ret; + + if (!stat_dir && (ret = tracing_stat_init())) + return ret; session->file = tracefs_create_file(session->ts->name, 0644, stat_dir, @@ -301,7 +305,7 @@ static int init_stat_file(struct stat_session *session) int register_stat_tracer(struct tracer_stat *trace) { struct stat_session *session, *node; - int ret; + int ret = -EINVAL; if (!trace) return -EINVAL; @@ -312,17 +316,15 @@ int register_stat_tracer(struct tracer_stat *trace) /* Already registered? */ mutex_lock(&all_stat_sessions_mutex); list_for_each_entry(node, &all_stat_sessions, session_list) { - if (node->ts == trace) { - mutex_unlock(&all_stat_sessions_mutex); - return -EINVAL; - } + if (node->ts == trace) + goto out; } - mutex_unlock(&all_stat_sessions_mutex); + ret = -ENOMEM; /* Init the session */ session = kzalloc(sizeof(*session), GFP_KERNEL); if (!session) - return -ENOMEM; + goto out; session->ts = trace; INIT_LIST_HEAD(&session->session_list); @@ -331,15 +333,16 @@ int register_stat_tracer(struct tracer_stat *trace) ret = init_stat_file(session); if (ret) { destroy_session(session); - return ret; + goto out; } + ret = 0; /* Register */ - mutex_lock(&all_stat_sessions_mutex); list_add_tail(&session->session_list, &all_stat_sessions); + out: mutex_unlock(&all_stat_sessions_mutex); - return 0; + return ret; } void unregister_stat_tracer(struct tracer_stat *trace) |