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To avoid mixup of packets from differnt ftrace packets simultaneously, use different channel for packets from different CPU. Reviewed-by: Steven Rostedt (VMware) <rostedt@goodmis.org> Signed-off-by: Tingwei Zhang <tingwei@codeaurora.org> Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com> Link: https://lore.kernel.org/r/20201005071319.78508-7-alexander.shishkin@linux.intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>