[for-next][PATCH 7/8] ring-buffer: Froce rb_update_write_stamp() to be inlined

From: Steven Rostedt
Date: Tue Nov 29 2016 - 10:09:24 EST


From: "Steven Rostedt (Red Hat)" <rostedt@xxxxxxxxxxx>

The function rb_update_write_stamp() is in the hotpath of the ring buffer
recording. Make sure that it is inlined as well. There's not many places
that call it.

Link: http://lkml.kernel.org/r/20161121183700.GW26852@xxxxxxxxxxxxxxxxxx

Reported-by: Andi Kleen <andi@xxxxxxxxxxxxxx>
Signed-off-by: Steven Rostedt <rostedt@xxxxxxxxxxx>
---
kernel/trace/ring_buffer.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/kernel/trace/ring_buffer.c b/kernel/trace/ring_buffer.c
index 04068c0ed927..04579a0c7711 100644
--- a/kernel/trace/ring_buffer.c
+++ b/kernel/trace/ring_buffer.c
@@ -2486,7 +2486,7 @@ static inline void rb_event_discard(struct ring_buffer_event *event)
event->time_delta = 1;
}

-static inline bool
+static __always_inline bool
rb_event_is_commit(struct ring_buffer_per_cpu *cpu_buffer,
struct ring_buffer_event *event)
{
@@ -2500,7 +2500,7 @@ rb_event_is_commit(struct ring_buffer_per_cpu *cpu_buffer,
rb_commit_index(cpu_buffer) == index;
}

-static void
+static __always_inline void
rb_update_write_stamp(struct ring_buffer_per_cpu *cpu_buffer,
struct ring_buffer_event *event)
{
--
2.10.2