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| author | Zhiqiang Liu <liuzhiqiang26@huawei.com> | 2022-07-20 10:46:48 +0800 |
|---|---|---|
| committer | Steven Rostedt (Google) <rostedt@goodmis.org> | 2022-08-02 15:13:19 -0400 |
| commit | 59927cbe3f30c5ed7fc5d33487ef06611394a548 (patch) | |
| tree | 4339dc64bb92cb92821e0a76abdc98b87c04b932 /kernel | |
| parent | 4c3d2f9388d36eb28640a220a6f908328442d873 (diff) | |
| download | lwn-59927cbe3f30c5ed7fc5d33487ef06611394a548.tar.gz lwn-59927cbe3f30c5ed7fc5d33487ef06611394a548.zip | |
tracing: Use free_trace_buffer() in allocate_trace_buffers()
In allocate_trace_buffers(), if allocating tr->max_buffer
fails, we can directly call free_trace_buffer to free
tr->array_buffer.
Link: https://lkml.kernel.org/r/65f0702d-07f6-08de-2a07-4c50af56a67b@huawei.com
Signed-off-by: Zhiqiang Liu <liuzhiqiang26@huawei.com>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/trace/trace.c | 25 |
1 files changed, 11 insertions, 14 deletions
diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c index 301305ec134b..27febd4ee33e 100644 --- a/kernel/trace/trace.c +++ b/kernel/trace/trace.c @@ -9101,6 +9101,16 @@ allocate_trace_buffer(struct trace_array *tr, struct array_buffer *buf, int size return 0; } +static void free_trace_buffer(struct array_buffer *buf) +{ + if (buf->buffer) { + ring_buffer_free(buf->buffer); + buf->buffer = NULL; + free_percpu(buf->data); + buf->data = NULL; + } +} + static int allocate_trace_buffers(struct trace_array *tr, int size) { int ret; @@ -9113,10 +9123,7 @@ static int allocate_trace_buffers(struct trace_array *tr, int size) ret = allocate_trace_buffer(tr, &tr->max_buffer, allocate_snapshot ? size : 1); if (MEM_FAIL(ret, "Failed to allocate trace buffer\n")) { - ring_buffer_free(tr->array_buffer.buffer); - tr->array_buffer.buffer = NULL; - free_percpu(tr->array_buffer.data); - tr->array_buffer.data = NULL; + free_trace_buffer(&tr->array_buffer); return -ENOMEM; } tr->allocated_snapshot = allocate_snapshot; @@ -9131,16 +9138,6 @@ static int allocate_trace_buffers(struct trace_array *tr, int size) return 0; } -static void free_trace_buffer(struct array_buffer *buf) -{ - if (buf->buffer) { - ring_buffer_free(buf->buffer); - buf->buffer = NULL; - free_percpu(buf->data); - buf->data = NULL; - } -} - static void free_trace_buffers(struct trace_array *tr) { if (!tr) |