On Fri, Dec 01, 2017 at 11:44:22AM +0100, Sebastian Andrzej Siewior wrote: > --- a/arch/x86/crypto/camellia_aesni_avx2_glue.c > +++ b/arch/x86/crypto/camellia_aesni_avx2_glue.c > @@ -206,6 +206,34 @@ struct crypt_priv { > bool fpu_enabled; > }; > > +#ifdef CONFIG_PREEMPT_RT_FULL > +static void camellia_fpu_end_rt(struct crypt_priv *ctx) > +{ > + bool fpu_enabled = ctx->fpu_enabled; > + > + if (!fpu_enabled) > + return; > + camellia_fpu_end(fpu_enabled); > + ctx->fpu_enabled = false; > +} > + > +static void camellia_fpu_sched_rt(struct crypt_priv *ctx) > +{ > + bool fpu_enabled = ctx->fpu_enabled; > + > + if (!fpu_enabled || !tif_need_resched_now()) > + return; > + camellia_fpu_end(fpu_enabled); > + kernel_fpu_end(); > + /* schedule due to preemptible */ > + kernel_fpu_begin(); > +} There's a ton of duplication in there; you're not nearly lazy enough. Why can't we do something simple like kernel_fpu_resched() ? diff --git a/arch/x86/kernel/fpu/core.c b/arch/x86/kernel/fpu/core.c index f92a6593de1e..05321b98a55a 100644 --- a/arch/x86/kernel/fpu/core.c +++ b/arch/x86/kernel/fpu/core.c @@ -130,6 +130,18 @@ void kernel_fpu_begin(void) } EXPORT_SYMBOL_GPL(kernel_fpu_begin); +void kernel_fpu_resched(void) +{ + WARN_ON_FPU(!this_cpu_read(in_kernel_fpu)); + + if (should_resched(PREEMPT_OFFSET)) { + kernel_fpu_end(); + cond_resched(); + kernel_fpu_begin(); + } +} +EXPORT_SYMBOL_GPL(kernel_fpu_resched); + void kernel_fpu_end(void) { __kernel_fpu_end(); -- To unsubscribe from this list: send the line "unsubscribe linux-rt-users" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html