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* [PATCH] knfsd: tidy up up meaning of 'buffer size' in nfsd/sunrpcNeilBrown2006-10-062-21/+24
| | | | | | | | | | | | | | | | | | | | | | | | | | | There is some confusion about the meaning of 'bufsz' for a sunrpc server. In some cases it is the largest message that can be sent or received. In other cases it is the largest 'payload' that can be included in a NFS message. In either case, it is not possible for both the request and the reply to be this large. One of the request or reply may only be one page long, which fits nicely with NFS. So we remove 'bufsz' and replace it with two numbers: 'max_payload' and 'max_mesg'. Max_payload is the size that the server requests. It is used by the server to check the max size allowed on a particular connection: depending on the protocol a lower limit might be used. max_mesg is the largest single message that can be sent or received. It is calculated as the max_payload, rounded up to a multiple of PAGE_SIZE, and with PAGE_SIZE added to overhead. Only one of the request and reply may be this size. The other must be at most one page. Cc: Greg Banks <gnb@sgi.com> Cc: "J. Bruce Fields" <bfields@fieldses.org> Signed-off-by: Neil Brown <neilb@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* Merge master.kernel.org:/pub/scm/linux/kernel/git/davej/confighLinus Torvalds2006-10-044-4/+0
|\ | | | | | | | | | | | | | | * master.kernel.org:/pub/scm/linux/kernel/git/davej/configh: Remove all inclusions of <linux/config.h> Manually resolved trivial path conflicts due to removed files in the sound/oss/ subdirectory.
| * Remove all inclusions of <linux/config.h>Dave Jones2006-10-044-4/+0
| | | | | | | | | | | | kbuild explicitly includes this at build time. Signed-off-by: Dave Jones <davej@redhat.com>
* | Merge master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6Linus Torvalds2006-10-0427-346/+416
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6: [XFRM]: BEET mode [TCP]: Kill warning in tcp_clean_rtx_queue(). [NET_SCHED]: Remove old estimator implementation [ATM]: [zatm] always *pcr in alloc_shaper() [ATM]: [ambassador] Change the return type to reflect reality [ATM]: kmalloc to kzalloc patches for drivers/atm [TIPC]: fix printk warning [XFRM]: Clearing xfrm_policy_count[] to zero during flush is incorrect. [XFRM] STATE: Use destination address for src hash. [NEIGH]: always use hash_mask under tbl lock [UDP]: Fix MSG_PROBE crash [UDP6]: Fix flowi clobbering [NET_SCHED]: Revert "HTB: fix incorrect use of RB_EMPTY_NODE" [NETFILTER]: ebt_mark: add or/and/xor action support to mark target [NETFILTER]: ipt_REJECT: remove largely duplicate route_reverse function [NETFILTER]: Honour source routing for LVS-NAT [NETFILTER]: add type parameter to ip_route_me_harder [NETFILTER]: Kconfig: fix xt_physdev dependencies
| * | [XFRM]: BEET modeDiego Beltrami2006-10-0410-9/+295
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch introduces the BEET mode (Bound End-to-End Tunnel) with as specified by the ietf draft at the following link: http://www.ietf.org/internet-drafts/draft-nikander-esp-beet-mode-06.txt The patch provides only single family support (i.e. inner family = outer family). Signed-off-by: Diego Beltrami <diego.beltrami@gmail.com> Signed-off-by: Miika Komu <miika@iki.fi> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: Abhinav Pathak <abhinav.pathak@hiit.fi> Signed-off-by: Jeff Ahrenholz <ahrenholz@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | [TCP]: Kill warning in tcp_clean_rtx_queue().David S. Miller2006-10-041-1/+1
| | | | | | | | | | | | | | | | | | | | | GCC can't tell we always initialize 'tv' in all the cases we actually use it, so explicitly set it up with zeros. Signed-off-by: David S. Miller <davem@davemloft.net>
| * | [NET_SCHED]: Remove old estimator implementationPatrick McHardy2006-10-041-196/+0
| | | | | | | | | | | | | | | | | | | | | Remove unused file, estimators live in net/core/gen_estimator.c now. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | [TIPC]: fix printk warningJeff Garzik2006-10-041-2/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | gcc spits out this warning: net/tipc/link.c: In function ‘link_retransmit_failure’: net/tipc/link.c:1669: warning: cast from pointer to integer of different size More than a little bit ugly, storing integers in void*, but at least the code is correct, unlike some of the more crufty Linux kernel code found elsewhere. Rather than having two casts to massage the value into u32, it's easier just to have a single cast and use "%lu", since it's just a printk. Signed-off-by: Jeff Garzik <jeff@garzik.org> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | [XFRM]: Clearing xfrm_policy_count[] to zero during flush is incorrect.David S. Miller2006-10-041-2/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When we flush policies, we do a type match so we might not actually delete all policies matching a certain direction. So keep track of how many policies we actually kill and subtract that number from xfrm_policy_count[dir] at the end. Based upon a patch by Masahide NAKAMURA. Signed-off-by: David S. Miller <davem@davemloft.net>
| * | [XFRM] STATE: Use destination address for src hash.Masahide NAKAMURA2006-10-042-10/+13
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Src hash is introduced for Mobile IPv6 route optimization usage. On current kenrel code it is calculated with source address only. It results we uses the same hash value for outbound state (when the node has only one address for Mobile IPv6). This patch use also destination address as peer information for src hash to be dispersed. Signed-off-by: Masahide NAKAMURA <nakam@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | [NEIGH]: always use hash_mask under tbl lockJulian Anastasov2006-10-041-6/+6
| | | | | | | | | | | | | | | | | | | | | | | | Make sure hash_mask is protected with tbl->lock in all cases just like the hash_buckets. Signed-off-by: Julian Anastasov <ja@ssi.bg> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | [UDP]: Fix MSG_PROBE crashHerbert Xu2006-10-042-0/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | UDP tracks corking status through the pending variable. The IP layer also tracks it through the socket write queue. It is possible for the two to get out of sync when MSG_PROBE is used. This patch changes UDP to check the write queue to ensure that the two stay in sync. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | [UDP6]: Fix flowi clobberingHerbert Xu2006-10-041-31/+31
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The udp6_sendmsg function uses a shared buffer to store the flow without taking any locks. This leads to races with SMP. This patch moves the flowi object onto the stack. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Acked-by: James Morris <jmorris@namei.org> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | [NET_SCHED]: Revert "HTB: fix incorrect use of RB_EMPTY_NODE"Ismail Donmez2006-10-041-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | With commit 10fd48f2376db52f08bf0420d2c4f580e39269e1 [1] , RB_EMPTY_NODE changed behaviour so it returns true when the node is empty as expected. Hence Patrick McHardy's fix for sched_htb.c should be reverted. Signed-off-by: Ismail Donmez <ismail@pardus.org.tr> ACKed-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | [NETFILTER]: ebt_mark: add or/and/xor action support to mark targetBart De Schuymer2006-10-041-4/+17
| | | | | | | | | | | | | | | | | | | | | | | | | | | The following patch adds or/and/xor functionality for the mark target, while staying backwards compatible. Signed-off-by: Bart De Schuymer <bdschuym@pandora.be> Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | [NETFILTER]: ipt_REJECT: remove largely duplicate route_reverse functionPatrick McHardy2006-10-041-78/+19
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Use ip_route_me_harder instead, which now allows to specify how we wish the packet to be routed. Based on patch by Simon Horman <horms@verge.net.au>. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | [NETFILTER]: Honour source routing for LVS-NATSimon Horman2006-10-041-0/+10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | For policy routing, packets originating from this machine itself may be routed differently to packets passing through. We want this packet to be routed as if it came from this machine itself. So re-compute the routing information using ip_route_me_harder(). This patch is derived from work by Ken Brownfield Cc: Ken Brownfield <krb@irridia.com> Signed-off-by: Simon Horman <horms@verge.net.au> Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | [NETFILTER]: add type parameter to ip_route_me_harderSimon Horman2006-10-043-5/+10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | By adding a type parameter to ip_route_me_harder() the expensive call to inet_addr_type() can be avoided in some cases. A followup patch where ip_route_me_harder() is called from within ip_vs_out() is one such example. Signed-off-By: Simon Horman <horms@verge.net.au> Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | [NETFILTER]: Kconfig: fix xt_physdev dependenciesPatrick McHardy2006-10-041-1/+1
| |/ | | | | | | | | | | | | | | | | xt_physdev depends on bridge netfilter, which is a boolean, but can still be built modular because of special handling in the bridge makefile. Add a dependency on BRIDGE to prevent XT_MATCH_PHYSDEV=y, BRIDGE=m. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
* | [PATCH] knfsd: svcrpc: use consistent variable name for the reply stateJ.Bruce Fields2006-10-041-3/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | The rpc reply has multiple levels of error returns. The code here contributes to the confusion by using "accept_statp" for a pointer to what the rfc (and wireshark, etc.) refer to as the "reply_stat". (The confusion is compounded by the fact that the rfc also has an "accept_stat" which follows the reply_stat in the succesful case.) Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu> Signed-off-by: Neil Brown <neilb@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [PATCH] knfsd: svcrpc: gss: fix failure on SVC_DENIED in integrity caseJ.Bruce Fields2006-10-041-12/+18
| | | | | | | | | | | | | | | | | | | | | | | | | | If the request is denied after gss_accept was called, we shouldn't try to wrap the reply. We were checking the accept_stat but not the reply_stat. To check the reply_stat in _release, we need a pointer to before (rather than after) the verifier, so modify body_start appropriately. Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu> Signed-off-by: Neil Brown <neilb@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [PATCH] knfsd: svcrpc: gss: factor out some common wrapping codeJ.Bruce Fields2006-10-041-20/+23
| | | | | | | | | | | | | | | | | | Factor out some common code from the integrity and privacy cases. Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu> Signed-off-by: Neil Brown <neilb@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [PATCH] knfsd: register all RPC programs with portmapper by defaultOlaf Kirch2006-10-041-14/+23
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The NFSACL patches introduced support for multiple RPC services listening on the same transport. However, only the first of these services was registered with portmapper. This was perfectly fine for nfsacl, as you traditionally do not want these to show up in a portmapper listing. The patch below changes the default behavior to always register all services listening on a given transport, but retains the old behavior for nfsacl services. Signed-off-by: Olaf Kirch <okir@suse.de> Signed-off-by: Neil Brown <neilb@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [PATCH] knfsd: knfsd: cache ipmap per TCP socketGreg Banks2006-10-042-3/+46
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Speed up high call-rate workloads by caching the struct ip_map for the peer on the connected struct svc_sock instead of looking it up in the ip_map cache hashtable on every call. This helps workloads using AUTH_SYS authentication over TCP. Testing was on a 4 CPU 4 NIC Altix using 4 IRIX clients, each with 16 synthetic client threads simulating an rsync (i.e. recursive directory listing) workload reading from an i386 RH9 install image (161480 regular files in 10841 directories) on the server. That tree is small enough to fill in the server's RAM so no disk traffic was involved. This setup gives a sustained call rate in excess of 60000 calls/sec before being CPU-bound on the server. Profiling showed strcmp(), called from ip_map_match(), was taking 4.8% of each CPU, and ip_map_lookup() was taking 2.9%. This patch drops both contribution into the profile noise. Note that the above result overstates this value of this patch for most workloads. The synthetic clients are all using separate IP addresses, so there are 64 entries in the ip_map cache hash. Because the kernel measured contained the bug fixed in commit commit 1f1e030bf75774b6a283518e1534d598e14147d4 and was running on 64bit little-endian machine, probably all of those 64 entries were on a single chain, thus increasing the cost of ip_map_lookup(). With a modern kernel you would need more clients to see the same amount of performance improvement. This patch has helped to scale knfsd to handle a deployment with 2000 NFS clients. Signed-off-by: Greg Banks <gnb@melbourne.sgi.com> Signed-off-by: Neil Brown <neilb@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [PATCH] knfsd: Prepare knfsd for support of rsize/wsize of up to 1MB, over TCPGreg Banks2006-10-041-0/+15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The limit over UDP remains at 32K. Also, make some of the apparently arbitrary sizing constants clearer. The biggest change here involves replacing NFSSVC_MAXBLKSIZE by a function of the rqstp. This allows it to be different for different protocols (udp/tcp) and also allows it to depend on the servers declared sv_bufsiz. Note that we don't actually increase sv_bufsz for nfs yet. That comes next. Signed-off-by: Greg Banks <gnb@melbourne.sgi.com> Signed-off-by: Neil Brown <neilb@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [PATCH] knfsd: Avoid excess stack usage in svc_tcp_recvfromNeilBrown2006-10-041-1/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | .. by allocating the array of 'kvec' in 'struct svc_rqst'. As we plan to increase RPCSVC_MAXPAGES from 8 upto 256, we can no longer allocate an array of this size on the stack. So we allocate it in 'struct svc_rqst'. However svc_rqst contains (indirectly) an array of the same type and size (actually several, but they are in a union). So rather than waste space, we move those arrays out of the separately allocated union and into svc_rqst to share with the kvec moved out of svc_tcp_recvfrom (various arrays are used at different times, so there is no conflict). Signed-off-by: Neil Brown <neilb@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [PATCH] knfsd: Replace two page lists in struct svc_rqst with oneNeilBrown2006-10-043-37/+29
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | We are planning to increase RPCSVC_MAXPAGES from about 8 to about 256. This means we need to be a bit careful about arrays of size RPCSVC_MAXPAGES. struct svc_rqst contains two such arrays. However the there are never more that RPCSVC_MAXPAGES pages in the two arrays together, so only one array is needed. The two arrays are for the pages holding the request, and the pages holding the reply. Instead of two arrays, we can simply keep an index into where the first reply page is. This patch also removes a number of small inline functions that probably server to obscure what is going on rather than clarify it, and opencode the needed functionality. Also remove the 'rq_restailpage' variable as it is *always* 0. i.e. if the response 'xdr' structure has a non-empty tail it is always in the same pages as the head. check counters are initilised and incr properly check for consistant usage of ++ etc maybe extra some inlines for common approach general review Signed-off-by: Neil Brown <neilb@suse.de> Cc: Magnus Maatta <novell@kiruna.se> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [PATCH] knfsd: Fixed handling of lockd fail when adding nfsd socketNeilBrown2006-10-041-0/+3
| | | | | | | | | | | | | | | | | | | | Arrgg.. We cannot 'lockd_up' before 'svc_addsock' as we don't know the protocol yet.... So switch it around again and save the name of the created sockets so that it can be closed if lock_up fails. Signed-off-by: Neil Brown <neilb@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [PATCH] knfsd: call lockd_down when closing a socket via a write to ↵NeilBrown2006-10-041-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | nfsd/portlist The refcount that nfsd holds on lockd is based on the number of open sockets. So when we close a socket, we should decrement the ref (with lockd_down). Currently when a socket is closed via writing to the portlist file, that doesn't happen. So: make sure we get an error return if the socket that was requested does is not found, and call lockd_down if it was. Cc: "J. Bruce Fields" <bfields@fieldses.org> Signed-off-by: Neil Brown <neilb@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [PATCH] slab: clean up leak tracking ifdefs a little bitChristoph Hellwig2006-10-041-1/+2
|/ | | | | | | | | | | | | | | | - rename ____kmalloc to kmalloc_track_caller so that people have a chance to guess what it does just from it's name. Add a comment describing it for those who don't. Also move it after kmalloc in slab.h so people get less confused when they are just looking for kmalloc - move things around in slab.c a little to reduce the ifdef mess. [penberg@cs.helsinki.fi: Fix up reversed #ifdef] Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi> Cc: Christoph Lameter <clameter@engr.sgi.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* fix file specification in commentsUwe Zeisberger2006-10-032-2/+2
| | | | | | | Many files include the filename at the beginning, serveral used a wrong one. Signed-off-by: Uwe Zeisberger <Uwe_Zeisberger@digi.com> Signed-off-by: Adrian Bunk <bunk@stusta.de>
* Still more typo fixesMatt LaPlante2006-10-032-2/+2
| | | | Signed-off-by: Adrian Bunk <bunk@stusta.de>
* more misc typo fixesMatt LaPlante2006-10-033-4/+4
| | | | Signed-off-by: Adrian Bunk <bunk@stusta.de>
* [PATCH] namespaces: utsname: use init_utsname when appropriateSerge E. Hallyn2006-10-021-1/+1
| | | | | | | | | | | | | | | | | | | | | In some places, particularly drivers and __init code, the init utsns is the appropriate one to use. This patch replaces those with a the init_utsname helper. Changes: Removed several uses of init_utsname(). Hope I picked all the right ones in net/ipv4/ipconfig.c. These are now changed to utsname() (the per-process namespace utsname) in the previous patch (2/7) [akpm@osdl.org: CIFS fix] Signed-off-by: Serge E. Hallyn <serue@us.ibm.com> Cc: Kirill Korotaev <dev@openvz.org> Cc: "Eric W. Biederman" <ebiederm@xmission.com> Cc: Herbert Poetzl <herbert@13thfloor.at> Cc: Andrey Savochkin <saw@sw.ru> Cc: Serge Hallyn <serue@us.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] namespaces: utsname: switch to using uts namespacesSerge E. Hallyn2006-10-022-9/+9
| | | | | | | | | | | | | | | | | | | | | Replace references to system_utsname to the per-process uts namespace where appropriate. This includes things like uname. Changes: Per Eric Biederman's comments, use the per-process uts namespace for ELF_PLATFORM, sunrpc, and parts of net/ipv4/ipconfig.c [jdike@addtoit.com: UML fix] [clg@fr.ibm.com: cleanup] [akpm@osdl.org: build fix] Signed-off-by: Serge E. Hallyn <serue@us.ibm.com> Cc: Kirill Korotaev <dev@openvz.org> Cc: "Eric W. Biederman" <ebiederm@xmission.com> Cc: Herbert Poetzl <herbert@13thfloor.at> Cc: Andrey Savochkin <saw@sw.ru> Signed-off-by: Cedric Le Goater <clg@fr.ibm.com> Cc: Jeff Dike <jdike@addtoit.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] knfsd: make rpc threads pools numa awareGreg Banks2006-10-022-2/+260
| | | | | | | | | | | | | | | | | | | Actually implement multiple pools. On NUMA machines, allocate a svc_pool per NUMA node; on SMP a svc_pool per CPU; otherwise a single global pool. Enqueue sockets on the svc_pool corresponding to the CPU on which the socket bh is run (i.e. the NIC interrupt CPU). Threads have their cpu mask set to limit them to the CPUs in the svc_pool that owns them. This is the patch that allows an Altix to scale NFS traffic linearly beyond 4 CPUs and 4 NICs. Incorporates changes and feedback from Neil Brown, Trond Myklebust, and Christoph Hellwig. Signed-off-by: Greg Banks <gnb@melbourne.sgi.com> Signed-off-by: Neil Brown <neilb@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] knfsd: add svc_set_num_threadsGreg Banks2006-10-022-3/+138
| | | | | | | | | | | | | Currently knfsd keeps its own list of all nfsd threads in nfssvc.c; add a new way of managing the list of all threads in a svc_serv. Add svc_create_pooled() to allow creation of a svc_serv whose threads are managed by the sunrpc code. Add svc_set_num_threads() to manage the number of threads in a service, either per-pool or globally across the service. Signed-off-by: Greg Banks <gnb@melbourne.sgi.com> Signed-off-by: Neil Brown <neilb@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] knfsd: split svc_serv into poolsGreg Banks2006-10-022-52/+129
| | | | | | | | | | | | | | | | | Split out the list of idle threads and pending sockets from svc_serv into a new svc_pool structure, and allocate a fixed number (in this patch, 1) of pools per svc_serv. The new structure contains a lock which takes over several of the duties of svc_serv->sv_lock, which is now relegated to protecting only sv_tempsocks, sv_permsocks, and sv_tmpcnt in svc_serv. The point is to move the hottest fields out of svc_serv and into svc_pool, allowing a following patch to arrange for a svc_pool per NUMA node or per CPU. This is a major step towards making the NFS server NUMA-friendly. Signed-off-by: Greg Banks <gnb@melbourne.sgi.com> Signed-off-by: Neil Brown <neilb@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] knfsd: test and set SK_BUSY atomicallyGreg Banks2006-10-021-10/+10
| | | | | | | | | | | | | The SK_BUSY bit in svc_sock->sk_flags ensures that we do not attempt to enqueue a socket twice. Currently, setting and clearing the bit is protected by svc_serv->sv_lock. As I intend to reduce the data that the lock protects so it's not held when svc_sock_enqueue() tests and sets SK_BUSY, that test and set needs to be atomic. Signed-off-by: Greg Banks <gnb@melbourne.sgi.com> Signed-off-by: Neil Brown <neilb@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] knfsd: convert sk_reserved to atomic_tGreg Banks2006-10-021-7/+5
| | | | | | | | | | | Convert the svc_sock->sk_reserved variable from an int protected by svc_serv->sv_lock, to an atomic. This reduces (by 1) the number of places we need to take the (effectively global) svc_serv->sv_lock. Signed-off-by: Greg Banks <gnb@melbourne.sgi.com> Signed-off-by: Neil Brown <neilb@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] knfsd: use new lock for svc_sock deferred listGreg Banks2006-10-021-6/+6
| | | | | | | | | | | Protect the svc_sock->sk_deferred list with a new lock svc_sock->sk_defer_lock instead of svc_serv->sv_lock. Using the more fine-grained lock reduces the number of places we need to take the svc_serv lock. Signed-off-by: Greg Banks <gnb@melbourne.sgi.com> Signed-off-by: Neil Brown <neilb@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] knfsd: convert sk_inuse to atomic_tGreg Banks2006-10-021-18/+11
| | | | | | | | | | | Convert the svc_sock->sk_inuse counter from an int protected by svc_serv->sv_lock, to an atomic. This reduces the number of places we need to take the (effectively global) svc_serv->sv_lock. Signed-off-by: Greg Banks <gnb@melbourne.sgi.com> Signed-off-by: Neil Brown <neilb@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] knfsd: move tempsock aging to a timerGreg Banks2006-10-022-26/+73
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Following are 11 patches from Greg Banks which combine to make knfsd more Numa-aware. They reduce hitting on 'global' data structures, and create some data-structures that can be node-local. knfsd threads are bound to a particular node, and the thread to handle a new request is chosen from the threads that are attach to the node that received the interrupt. The distribution of threads across nodes can be controlled by a new file in the 'nfsd' filesystem, though the default approach of an even spread is probably fine for most sites. Some (old) numbers that show the efficacy of these patches: N == number of NICs == number of CPUs == nmber of clients. Number of NUMA nodes == N/2 N Throughput, MiB/s CPU usage, % (max=N*100) Before After Before After --- ------ ---- ----- ----- 4 312 435 350 228 6 500 656 501 418 8 562 804 690 589 This patch: Move the aging of RPC/TCP connection sockets from the main svc_recv() loop to a timer which uses a mark-and-sweep algorithm every 6 minutes. This reduces the amount of work that needs to be done in the main RPC loop and the length of time we need to hold the (effectively global) svc_serv->sv_lock. [akpm@osdl.org: cleanup] Signed-off-by: Greg Banks <gnb@melbourne.sgi.com> Signed-off-by: Neil Brown <neilb@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] knfsd: Drop 'serv' option to svc_recv and svc_processNeilBrown2006-10-022-2/+4
| | | | | | | | | | | It isn't needed as it is available in rqstp->rq_server, and dropping it allows some local vars to be dropped. [akpm@osdl.org: build fix] Cc: "J. Bruce Fields" <bfields@fieldses.org> Signed-off-by: Neil Brown <neilb@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] knfsd: allow sockets to be passed to nfsd via 'portlist'NeilBrown2006-10-021-4/+45
| | | | | | | | | | | | Userspace should create and bind a socket (but not connectted) and write the 'fd' to portlist. This will cause the nfs server to listen on that socket. To close a socket, the name of the socket - as read from 'portlist' can be written to 'portlist' with a preceding '-'. Signed-off-by: Neil Brown <neilb@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] knfsd: define new nfsdfs file: portlist - contains list of portsNeilBrown2006-10-021-0/+40
| | | | | | | | | | | | | | | | | This file will list all ports that nfsd has open. Default when TCP enabled will be ipv4 udp 0.0.0.0 2049 ipv4 tcp 0.0.0.0 2049 Later, the list of ports will be settable. 'portlist' chosen rather than 'ports', to avoid unnecessary confusion with non-mainline patches which created 'ports' with different semantics. [akpm@osdl.org: cleanups, build fix] Signed-off-by: Neil Brown <neilb@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] knfsd: add a callback for when last rpc thread finishesNeilBrown2006-10-021-1/+6
| | | | | | | | | | | | nfsd has some cleanup that it wants to do when the last thread exits, and there will shortly be some more. So collect this all into one place and define a callback for an rpc service to call when the service is about to be destroyed. [akpm@osdl.org: cleanups, build fix] Signed-off-by: Neil Brown <neilb@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] knfsd: remove an unused variable from auth_unix_lookup()Greg Banks2006-10-021-4/+1
| | | | | | | Signed-off-by: Greg Banks <gnb@melbourne.sgi.com> Signed-off-by: Neil Brown <neilb@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] Kprobes: Make kprobe modules more portableAnanth N Mavinakayanahalli2006-10-021-2/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | In an effort to make kprobe modules more portable, here is a patch that: o Introduces the "symbol_name" field to struct kprobe. The symbol->address resolution now happens in the kernel in an architecture agnostic manner. 64-bit powerpc users no longer have to specify the ".symbols" o Introduces the "offset" field to struct kprobe to allow a user to specify an offset into a symbol. o The legacy mechanism of specifying the kprobe.addr is still supported. However, if both the kprobe.addr and kprobe.symbol_name are specified, probe registration fails with an -EINVAL. o The symbol resolution code uses kallsyms_lookup_name(). So CONFIG_KPROBES now depends on CONFIG_KALLSYMS o Apparantly kprobe modules were the only legitimate out-of-tree user of the kallsyms_lookup_name() EXPORT. Now that the symbol resolution happens in-kernel, remove the EXPORT as suggested by Christoph Hellwig o Modify tcp_probe.c that uses the kprobe interface so as to make it work on multiple platforms (in its earlier form, the code wouldn't work, say, on powerpc) Signed-off-by: Ananth N Mavinakayanahalli <ananth@in.ibm.com> Signed-off-by: Prasanna S Panchamukhi <prasanna@in.ibm.com> Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] const struct tty_operationsJeff Dike2006-10-022-2/+2
| | | | | | | | | | | | | | | | | | | | | | | As part of an SMP cleanliness pass over UML, I consted a bunch of structures in order to not have to document their locking. One of these structures was a struct tty_operations. In order to const it in UML without introducing compiler complaints, the declaration of tty_set_operations needs to be changed, and then all of its callers need to be fixed. This patch declares all struct tty_operations in the tree as const. In all cases, they are static and used only as input to tty_set_operations. As an extra check, I ran an i386 allyesconfig build which produced no extra warnings. 53 drivers are affected. I checked the history of a bunch of them, and in most cases, there have been only a handful of maintenance changes in the last six months. serial_core.c was the busiest one that I looked at. Signed-off-by: Jeff Dike <jdike@addtoit.com> Acked-by: Alan Cox <alan@redhat.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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