Currently vmalloc may be used for allocating zone wait table. Use virtual compound page in order to be able to use a physically contiguous page that can then use the large kernel TLBs. Drawback: The zone wait table is rounded up to the next power of two which may cost some memory. Signed-off-by: Christoph Lameter <clameter@sgi.com> --- mm/page_alloc.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) Index: linux-2.6.25-rc5-mm1/mm/page_alloc.c =================================================================== --- linux-2.6.25-rc5-mm1.orig/mm/page_alloc.c 2008-03-20 20:03:50.885900600 -0700 +++ linux-2.6.25-rc5-mm1/mm/page_alloc.c 2008-03-20 20:04:43.282104684 -0700 @@ -2866,7 +2866,8 @@ int zone_wait_table_init(struct zone *zo * To use this new node's memory, further consideration will be * necessary. */ - zone->wait_table = vmalloc(alloc_size); + zone->wait_table = __alloc_vcompound(GFP_KERNEL, + get_order(alloc_size)); } if (!zone->wait_table) return -ENOMEM; -- --
| David Miller | Re: [GIT]: Networking |
| Greg KH | [GIT PATCH] driver core patches against 2.6.24 |
| debian developer | Re: Dual-Licensing Linux Kernel with GPL V2 and GPL V3 |
| Roland Dreier | Re: Integration of SCST in the mainstream Linux kernel |
git: | |
| Arjan van de Ven | Re: [GIT]: Networking |
| Gerrit Renker | [PATCH 27/37] dccp: Integration of dynamic feature activation - part 2 (server side) |
| Jarek Poplawski | [PATCH] pkt_sched: Destroy gen estimators under rtnl_lock(). |
| Paul E. McKenney | Re: iptables very slow after commit 784544739a25c30637397ace5489eeb6e15d7d49 |
