提交 157124c1 编写于 作者: P Peter Zijlstra 提交者: Ingo Molnar

sched: fix warning in hrtick_start_fair()

Benjamin Herrenschmidt reported:

> I get that on ppc64 ...
>
> In file included from kernel/sched.c:1595:
> kernel/sched_fair.c: In function ‘hrtick_start_fair’:
> kernel/sched_fair.c:902: warning: comparison of distinct pointer types lacks a cast
>
> Probably harmless but annoying.

s64 delta = slice - ran;

-->	delta = max(10000LL, delta);

Probably ppc64's s64 is long vs long long..

I think hpa was looking at sanitizing all these 64bit types across the
architectures.

Use max_t with an explicit type meanwhile.
Reported-by: NBenjamin Herrenschmid <benh@kernel.crashing.org>
Signed-off-by: NPeter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: NIngo Molnar <mingo@elte.hu>
上级 c9272c4f
......@@ -899,7 +899,7 @@ static void hrtick_start_fair(struct rq *rq, struct task_struct *p)
* doesn't make sense. Rely on vruntime for fairness.
*/
if (rq->curr != p)
delta = max(10000LL, delta);
delta = max_t(s64, 10000LL, delta);
hrtick_start(rq, delta);
}
......
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