1 files changed, 9 insertions, 0 deletions

diff --git a/kernel/trace/ring_buffer.c b/kernel/trace/ring_buffer.c
index bbf51922a8ca..384ca5d9d729 100644
--- a/kernel/trace/ring_buffer.c
+++ b/kernel/trace/ring_buffer.c
@@ -577,8 +577,17 @@ struct ring_buffer *ring_buffer_alloc(unsigned long size, unsigned flags)
         if (buffer->pages == 1)
                 buffer->pages++;
 
+        /*
+         * In case of non-hotplug cpu, if the ring-buffer is allocated
+         * in early initcall, it will not be notified of secondary cpus.
+         * In that off case, we need to allocate for all possible cpus.
+         */
+#ifdef CONFIG_HOTPLUG_CPU
         get_online_cpus();
         cpumask_copy(buffer->cpumask, cpu_online_mask);
+#else
+        cpumask_copy(buffer->cpumask, cpu_possible_mask);
+#endif
         buffer->cpus = nr_cpu_ids;
 
         bsize = sizeof(void *) * nr_cpu_ids;