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sched,crypto: Convert to sched_set_fifo*()

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Because SCHED_FIFO is a broken scheduler model (see previous patches)
take away the priority field, the kernel can't possibly make an
informed decision.

Use sched_set_fifo() to request SCHED_FIFO and delegate
actual priority selection to userspace. Effectively no change in
behaviour.

Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Ingo Molnar <mingo@kernel.org>
Acked-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Peter Zijlstra 2020-04-21 12:09:13 +02:00
parent 0030c1d4a3
commit dbc6d0d5a5
1 changed files with 1 additions and 2 deletions
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3
crypto/crypto_engine.c
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@ -482,7 +482,6 @@ struct crypto_engine *crypto_engine_alloc_init_and_set(struct device *dev,
int (*cbk_do_batch)(struct crypto_engine *engine),
bool rt, int qlen)
{
struct sched_param param = { .sched_priority = MAX_RT_PRIO / 2 };
struct crypto_engine *engine;
if (!dev)
@ -520,7 +519,7 @@ struct crypto_engine *crypto_engine_alloc_init_and_set(struct device *dev,
if (engine->rt) {
dev_info(dev, "will run requests pump with realtime priority\n");
sched_setscheduler(engine->kworker->task, SCHED_FIFO, &param);
sched_set_fifo(engine->kworker->task);
}
return engine;