ring-buffer: Select IRQ_WORK

As the wake up logic for waiters on the buffer has been moved
from the tracing code to the ring buffer, it requires also adding
IRQ_WORK as the wake up code is performed via irq_work.

This fixes compile breakage when a user of the ring buffer is selected
but tracing and irq_work are not.

Link http://lkml.kernel.org/r/20130503115332.GT8356@rric.localhost

Cc: Arnd Bergmann <arnd@arndb.de>
Reported-by: Robert Richter <rric@kernel.org>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>

diff --git a/kernel/trace/Kconfig b/kernel/trace/Kconfig
index 5e9efd4..015f85a 100644 (file)
--- a/kernel/trace/Kconfig
+++ b/kernel/trace/Kconfig
@@ -71,6 +71,7 @@ config TRACE_CLOCK
 config RING_BUFFER
        bool
        select TRACE_CLOCK
+       select IRQ_WORK
 
 config FTRACE_NMI_ENTER
        bool
@@ -107,7 +108,6 @@ config TRACING
        select BINARY_PRINTF
        select EVENT_TRACING
        select TRACE_CLOCK
-       select IRQ_WORK
 
 config GENERIC_TRACER
        bool