linux/net/sunrpc
Christoph Lameter 62bc62a873 page allocator: use a pre-calculated value instead of num_online_nodes() in fast paths
num_online_nodes() is called in a number of places but most often by the
page allocator when deciding whether the zonelist needs to be filtered
based on cpusets or the zonelist cache.  This is actually a heavy function
and touches a number of cache lines.

This patch stores the number of online nodes at boot time and updates the
value when nodes get onlined and offlined.  The value is then used in a
number of important paths in place of num_online_nodes().

[rientjes@google.com: do not override definition of node_set_online() with macro]
Signed-off-by: Christoph Lameter <cl@linux-foundation.org>
Signed-off-by: Mel Gorman <mel@csn.ul.ie>
Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Cc: Pekka Enberg <penberg@cs.helsinki.fi>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Nick Piggin <nickpiggin@yahoo.com.au>
Cc: Dave Hansen <dave@linux.vnet.ibm.com>
Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
Signed-off-by: David Rientjes <rientjes@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-06-16 19:47:35 -07:00
..
auth_gss sunrpc/auth_gss: Call rcu_barrier() on module unload. 2009-06-10 01:11:27 -07:00
xprtrdma Merge branch 'for-2.6.30' of git://linux-nfs.org/~bfields/linux 2009-05-29 08:49:09 -07:00
auth_generic.c SUNRPC: Fix a performance regression in the RPC authentication code 2008-11-20 13:17:40 -08:00
auth_null.c NFSv4: Don't use cred->cr_ops->cr_name in nfs4_proc_setclientid() 2008-04-19 16:54:53 -04:00
auth_unix.c SUNRPC: Use GFP_NOFS when allocating credentials 2008-07-09 12:08:48 -04:00
auth.c Merge branch 'devel' into next 2008-12-30 16:51:43 -05:00
cache.c proc 2/2: remove struct proc_dir_entry::owner 2009-03-31 01:14:44 +04:00
clnt.c SUNRPC: Return EAGAIN instead of ENOTCONN when waking up xprt->pending 2009-03-11 14:38:00 -04:00
Kconfig Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2009-04-03 15:24:35 -07:00
Makefile SUNRPC: Add a generic RPC credential 2008-03-14 13:42:38 -04:00
rpc_pipe.c constify dentry_operations: rest 2009-03-27 14:44:03 -04:00
rpcb_clnt.c SUNRPC: rpcb_register() should handle errors silently 2009-03-28 15:59:48 -04:00
sched.c SUNRPC: Tighten up the task locking rules in __rpc_execute() 2009-03-10 20:33:16 -04:00
socklib.c SUNRPC: temp var should match return type of xdr_skb_read_actor 2008-01-30 02:05:43 -05:00
stats.c proc 2/2: remove struct proc_dir_entry::owner 2009-03-31 01:14:44 +04:00
sunrpc_syms.c SUNRPC: Move exported symbol definitions after function declaration part 2 2008-02-01 17:01:24 -05:00
svc_xprt.c Merge branch 'for-2.6.30' of git://linux-nfs.org/~bfields/linux 2009-04-06 13:25:56 -07:00
svc.c page allocator: use a pre-calculated value instead of num_online_nodes() in fast paths 2009-06-16 19:47:35 -07:00
svcauth_unix.c SUNRPC: The sunrpc server code should not be used by out-of-tree modules 2009-01-07 17:18:42 -05:00
svcauth.c SUNRPC: The sunrpc server code should not be used by out-of-tree modules 2009-01-07 17:18:42 -05:00
svcsock.c nfsd: Revert "svcrpc: take advantage of tcp autotuning" 2009-05-27 18:51:06 -04:00
sysctl.c sunrpc: fix possible overrun on read of /proc/sys/sunrpc/transports 2008-09-01 14:24:24 -04:00
timer.c
xdr.c SUNRPC: Convert the xdr helpers and rpc_pipefs to EXPORT_SYMBOL_GPL 2008-12-23 15:21:31 -05:00
xprt.c SUNRPC: Fix the problem of EADDRNOTAVAIL syslog floods on reconnect 2009-05-02 16:35:08 -07:00
xprtsock.c net: skb->dst accessors 2009-06-03 02:51:04 -07:00