From: Eric Dumazet <[EMAIL PROTECTED]> Date: Fri, 16 Nov 2007 09:59:03 +0100
> [PATCH] NET : NET_CLS_ROUTE : convert ip_rt_acct to per_cpu variables > > ip_rt_acct needs 4096 bytes per cpu to perform some accounting. > It is actually allocated as a single huge array [4096*NR_CPUS] > (rounded up to a power of two) > > Converting it to a per cpu variable is wanted to : > - Save space on machines were num_possible_cpus() < NR_CPUS > - Better NUMA placement (each cpu gets memory on its node) > > Signed-off-by: Eric Dumazet <[EMAIL PROTECTED]> This is better in one sense but worse in another. At least the previous code dynamically allocated the thing, now at least one copy is taking up core kernel text image space. I think it's an alloc_percpu() candidate, what do you think? - To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html
