irq_work: Fix build failure when CONFIG_IRQ_WORK is not defined

When CONFIG_IRQ_WORK is not defined (difficult to do, as it also
requires CONFIG_PRINTK not to be defined), we get a build failure:

	kernel/built-in.o: In function `flush_smp_call_function_queue':
	kernel/smp.c:263: undefined reference to `irq_work_run'
	kernel/smp.c:263: undefined reference to `irq_work_run'
	Makefile:933: recipe for target 'vmlinux' failed

Simplest thing to do is to make irq_work_run() a nop when not set.

Signed-off-by: Steven Rostedt <[email protected]>
Signed-off-by: Peter Zijlstra (Intel) <[email protected]>
Cc: Andrew Morton <[email protected]>
Cc: Frederic Weisbecker <[email protected]>
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Ingo Molnar <[email protected]>

0 files changed, 0 insertions, 0 deletions