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-rw-r--r--kernel/trace/trace.c7
1 files changed, 7 insertions, 0 deletions
diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c
index 36c213fbfce7..a5411b7414b1 100644
--- a/kernel/trace/trace.c
+++ b/kernel/trace/trace.c
@@ -1571,6 +1571,9 @@ void trace_printk_init_buffers(void)
pr_info("ftrace: Allocated trace_printk buffers\n");
+ /* Expand the buffers to set size */
+ tracing_update_buffers();
+
buffers_allocated = 1;
}
@@ -3030,6 +3033,10 @@ static int __tracing_resize_ring_buffer(unsigned long size, int cpu)
*/
ring_buffer_expanded = 1;
+ /* May be called before buffers are initialized */
+ if (!global_trace.buffer)
+ return 0;
+
ret = ring_buffer_resize(global_trace.buffer, size, cpu);
if (ret < 0)
return ret;
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