Messages in this thread Patch in this message | | | Date | Thu, 01 Aug 2019 13:13:51 +0200 | From | Peter Zijlstra <> | Subject | [PATCH 3/5] crypto: Reduce default RT priority |
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The crypto engine initializes its kworker thread to FIFO-99 (when requesting RT priority), reduce this to FIFO-50.
FIFO-99 is the very highest priority available to SCHED_FIFO and it not a suitable default; it would indicate the crypto work is the most important work on the machine.
Cc: Herbert Xu <herbert@gondor.apana.org.au> Cc: "David S. Miller" <davem@davemloft.net> Cc: linux-crypto@vger.kernel.org Cc: linux-kernel@vger.kernel.org Cc: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> --- crypto/crypto_engine.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/crypto/crypto_engine.c +++ b/crypto/crypto_engine.c @@ -425,7 +425,7 @@ EXPORT_SYMBOL_GPL(crypto_engine_stop); */ struct crypto_engine *crypto_engine_alloc_init(struct device *dev, bool rt) { - struct sched_param param = { .sched_priority = MAX_RT_PRIO - 1 }; + struct sched_param param = { .sched_priority = MAX_RT_PRIO / 2 }; struct crypto_engine *engine; if (!dev)
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