From: Steven Rostedt (Red Hat) Date: Wed, 23 Nov 2016 16:40:34 +0000 (-0500) Subject: ring-buffer: Always inline rb_event_data() X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=929ddbf3ef4e07fef67e93e998020d49d2533724;p=linux-beck.git ring-buffer: Always inline rb_event_data() The rb_event_data() is the fast path of getting the ring buffer data from an event. Externally, ring_buffer_event_data() is used to access this function. But unfortunately, rb_event_data() is not inlined, and calling ring_buffer_event_data() causes that function to be called again. Force rb_event_data() to be inlined to lower the number of operations needed when calling ring_buffer_event_data(). Link: http://lkml.kernel.org/r/20161121183700.GW26852@two.firstfloor.org Reported-by: Andi Kleen Signed-off-by: Steven Rostedt --- diff --git a/kernel/trace/ring_buffer.c b/kernel/trace/ring_buffer.c index 1f3580cee6cc..2760aaca6d1b 100644 --- a/kernel/trace/ring_buffer.c +++ b/kernel/trace/ring_buffer.c @@ -245,7 +245,7 @@ unsigned ring_buffer_event_length(struct ring_buffer_event *event) EXPORT_SYMBOL_GPL(ring_buffer_event_length); /* inline for ring buffer fast paths */ -static void * +static __always_inline void * rb_event_data(struct ring_buffer_event *event) { if (event->type_len == RINGBUF_TYPE_TIME_EXTEND)