Messages in this thread | | | Subject | Re: [PATCH 2/2] percpu_counter: Put a reasonable upper bound on percpu_counter_batch | From | Eric Dumazet <> | Date | Fri, 26 Aug 2011 10:39:43 +0200 |
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Le vendredi 26 août 2011 à 07:29 +1000, Anton Blanchard a écrit :
> +/* > + * We set the batch at 2 * num_online_cpus(), with a minimum of 32 and > + * a maximum of 1024. > + */ > static void compute_batch_value(void) > { > int nr = num_online_cpus(); > > - percpu_counter_batch = max(32, nr*2); > + percpu_counter_batch = min(1024, max(32, nr*2)); > } > > static int __cpuinit percpu_counter_hotcpu_callback(struct notifier_block *nb,
Or use the following :
percpu_counter_batch = clamp(nr*2, 32, 1024);
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