Commit f72267c3 authored Jun 02, 2007 by Russell King Committed by Russell King Jun 02, 2007

[ARM] Solve buggy smp_processor_id() usage

BUG: using smp_processor_id() in preemptible [00000001] code: opcontrol/427

Resolve this bug by ensuring that we're not using smp_processor_id() in
a preemptable context (by disabling preemption.)

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

parent 29c349d2

arch/arm/oprofile/op_model_mpcore.c

+2 −0

Original line number	Original line	Diff line number	Diff line
	@@ -200,8 +200,10 @@ static int em_call_function(int (*fn)(void))
	data.fn = fn;		data.fn = fn;
	data.ret = 0;		data.ret = 0;

			preempt_disable();
	smp_call_function(em_func, &data, 1, 1);		smp_call_function(em_func, &data, 1, 1);
	em_func(&data);		em_func(&data);
			preempt_enable();

	return data.ret;		return data.ret;
	}		}