Commit 9e738215 authored Feb 14, 2019 by Quentin Perret Committed by Steven Rostedt (VMware) Feb 15, 2019

tracing: Fix number of entries in trace header

The following commit

  441dae8f ("tracing: Add support for display of tgid in trace output")

removed the call to print_event_info() from print_func_help_header_irq()
which results in the ftrace header not reporting the number of entries
written in the buffer. As this wasn't the original intent of the patch,
re-introduce the call to print_event_info() to restore the orginal
behaviour.

Link: http://lkml.kernel.org/r/20190214152950.4179-1-quentin.perret@arm.com



Acked-by: Joel Fernandes <joelaf@google.com>
Cc: stable@vger.kernel.org
Fixes: 441dae8f ("tracing: Add support for display of tgid in trace output")
Signed-off-by: Quentin Perret <quentin.perret@arm.com>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>

parent 2c4f1fcb

kernel/trace/trace.c

+2 −0

Original line number	Diff line number	Diff line
		@@ -3384,6 +3384,8 @@ static void print_func_help_header_irq(struct trace_buffer *buf, struct seq_file
		const char tgid_space[] = " ";
		const char space[] = " ";

		print_event_info(buf, m);

		seq_printf(m, "# %s _-----=> irqs-off\n",
		tgid ? tgid_space : space);
		seq_printf(m, "# %s / _----=> need-resched\n",

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