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Subject[PATCH] tracing/histograms: Simplify create_hist_fields()
Date
When I look into implements of create_hist_fields(), I think there can be
following two simplifications:
1. If something wrong happened in parse_var_defs(), free_var_defs() would
have been called in it, so no need goto free again after calling it;
2. After calling create_key_fields(), regardless of the value of 'ret', it
then always runs into 'out: ', so the judge of 'ret' is redundant.

No functional changes.

Signed-off-by: Zheng Yejian <zhengyejian1@huawei.com>
---
kernel/trace/trace_events_hist.c | 5 ++---
1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/kernel/trace/trace_events_hist.c b/kernel/trace/trace_events_hist.c
index 2784951e0fc8..832c4ccf41ab 100644
--- a/kernel/trace/trace_events_hist.c
+++ b/kernel/trace/trace_events_hist.c
@@ -4454,7 +4454,7 @@ static int create_hist_fields(struct hist_trigger_data *hist_data,

ret = parse_var_defs(hist_data);
if (ret)
- goto out;
+ return ret;

ret = create_val_fields(hist_data, file);
if (ret)
@@ -4465,8 +4465,7 @@ static int create_hist_fields(struct hist_trigger_data *hist_data,
goto out;

ret = create_key_fields(hist_data, file);
- if (ret)
- goto out;
+
out:
free_var_defs(hist_data);

--
2.32.0
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