Messages in this thread | | | Date | Sun, 9 Nov 2014 15:04:16 +0400 | Subject | Re: [PATCH] ACPI/osl: speedup grace period in acpi_os_map_cleanup | From | Konstantin Khlebnikov <> |
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On Sun, Nov 9, 2014 at 3:51 AM, Paul E. McKenney <paulmck@linux.vnet.ibm.com> wrote: > On Sun, Nov 09, 2014 at 03:24:34AM +0400, Alexander Monakov wrote: >> On Sun, Nov 9, 2014 at 1:13 AM, Paul E. McKenney >> <paulmck@linux.vnet.ibm.com> wrote: >> > >> > Did anyone try replacing the synchronize_rcu() with >> > synchronize_rcu_expedited()? That should provide substantial speedups >> > over synchronize_rcu(). >> >> I've just briefly tested it on my laptop, and it also helps to avoid the issue. > > OK, good. > > In the past, synchronize_rcu_expedited() has been a bit unfriendly to > battery-powered platforms and to real-time and HPC workloads, but > recent changes for the most part fix this.
Good. In this way patch is much smaller. This code shouldn't be used too frequently, so overhead isn't so much important here.
> > Thanx, Paul > > -- > To unsubscribe from this list: send the line "unsubscribe linux-kernel" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html > Please read the FAQ at http://www.tux.org/lkml/
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