4.14-stable review patch. If anyone has any objections, please let me know.
------------------
From: Quentin Perret <quentin.per...@arm.com>
commit 9e7382153f80ba45a0bbcd540fb77d4b15f6e966 upstream.
The following commit
441dae8f2f29 ("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.per...@arm.com
Acked-by: Joel Fernandes <joe...@google.com>
Cc: sta...@vger.kernel.org
Fixes: 441dae8f2f29 ("tracing: Add support for display of tgid in trace output")
Signed-off-by: Quentin Perret <quentin.per...@arm.com>
Signed-off-by: Steven Rostedt (VMware) <rost...@goodmis.org>
Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org>
---
kernel/trace/trace.c | 2 ++
1 file changed, 2 insertions(+)
--- a/kernel/trace/trace.c
+++ b/kernel/trace/trace.c
@@ -3381,6 +3381,8 @@ static void print_func_help_header_irq(s
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",
