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* [ATM]: add support for LECS addresses learned from networkEric Kinzie2005-10-07
| | | | | | From: Eric Kinzie <ekinzie@cmf.nrl.navy.mil> Signed-off-by: Chas Williams <chas@cmf.nrl.navy.mil> Signed-off-by: David S. Miller <davem@davemloft.net>
* [SCTP] Fix SCTP socket options to work with 32-bit apps on 64-bit kernels.Sridhar Samudrala2005-10-07
| | | | | | | | | Adds alignment attribute to a few structures used with SCTP socket options so that the sizes and offsets remain the same when built using either 32 or 64 bit tools. Signed-off-by: Sridhar Samudrala <sri@us.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [SCTP] Fix sctp_get{pl}addrs() API to work with 32-bit apps on 64-bit kernels.Ivan Skytte Jørgensen2005-10-07
| | | | | | | | | The old socket options are marked with a _OLD suffix so that the existing 32-bit apps on 32-bit kernels do not break. Signed-off-by: Ivan Skytte Jørgensen <isj-sctp@i1.dk> Signed-off-by: Sridhar Samudrala <sri@us.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* Merge master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6Linus Torvalds2005-10-06
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| * [IPSEC]: Document that policy direction is derived from the index.Herbert Xu2005-10-05
| | | | | | | | | | | | | | | | | | | | | | Here is a patch that adds a helper called xfrm_policy_id2dir to document the fact that the policy direction can be and is derived from the index. This is based on a patch by YOSHIFUJI Hideaki and 210313105@suda.edu.cn. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
| * [XFRM]: fix sparse gfp nocast warningsRandy Dunlap2005-10-05
| | | | | | | | | | | | | | | | Fix implicit nocast warnings in xfrm code: net/xfrm/xfrm_policy.c:232:47: warning: implicit cast to nocast type Signed-off-by: Randy Dunlap <rdunlap@xenotime.net> Signed-off-by: David S. Miller <davem@davemloft.net>
| * [TEXTSEARCH]: fix sparse gfp nocast warningsRandy Dunlap2005-10-05
| | | | | | | | | | | | | | | | Fix nocast sparse warnings: include/linux/textsearch.h:165:57: warning: implicit cast to nocast type Signed-off-by: Randy Dunlap <rdunlap@xenotime.net> Signed-off-by: David S. Miller <davem@davemloft.net>
| * [RPC]: fix sparse gfp nocast warningsRandy Dunlap2005-10-05
| | | | | | | | | | | | | | | | | | | | | | Fix nocast sparse warnings: net/rxrpc/call.c:2013:25: warning: implicit cast to nocast type net/rxrpc/connection.c:538:46: warning: implicit cast to nocast type net/sunrpc/sched.c:730:36: warning: implicit cast to nocast type net/sunrpc/sched.c:734:56: warning: implicit cast to nocast type Signed-off-by: Randy Dunlap <rdunlap@xenotime.net> Signed-off-by: David S. Miller <davem@davemloft.net>
| * [IPVS]: fix sparse gfp nocast warningsRandy Dunlap2005-10-05
| | | | | | | | | | | | | | | | | | | | From: Randy Dunlap <rdunlap@xenotime.net> Fix implicit nocast warnings in ip_vs code: net/ipv4/ipvs/ip_vs_app.c:631:54: warning: implicit cast to nocast type Signed-off-by: Randy Dunlap <rdunlap@xenotime.net> Signed-off-by: David S. Miller <davem@davemloft.net>
| * [DECNET]: fix sparse gfp nocast warningsRandy Dunlap2005-10-05
| | | | | | | | | | | | | | | | | | | | Fix implicit nocast warnings in decnet code: net/decnet/af_decnet.c:458:40: warning: implicit cast to nocast type net/decnet/dn_nsp_out.c:125:35: warning: implicit cast to nocast type net/decnet/dn_nsp_out.c:219:29: warning: implicit cast to nocast type Signed-off-by: Randy Dunlap <rdunlap@xenotime.net> Signed-off-by: David S. Miller <davem@davemloft.net>
| * [CONNECTOR]: fix sparse gfp nocast warningsRandy Dunlap2005-10-05
| | | | | | | | | | | | | | | | | | Fix implicit nocast warnings in connector code: drivers/connector/connector.c:102:24: warning: implicit cast to nocast type drivers/connector/connector.c:114:45: warning: implicit cast to nocast type Signed-off-by: Randy Dunlap <rdunlap@xenotime.net> Signed-off-by: David S. Miller <davem@davemloft.net>
| * [ATM]: fix sparse gfp nocast warningsRandy Dunlap2005-10-05
| | | | | | | | | | | | | | | | | | | | | | Fix implicit nocast warnings in atm code: net/atm/atm_misc.c:35:44: warning: implicit cast to nocast type drivers/atm/fore200e.c:183:33: warning: implicit cast to nocast type Also use kzalloc() instead of kmalloc(). Signed-off-by: Randy Dunlap <rdunlap@xenotime.net> Signed-off-by: David S. Miller <davem@davemloft.net>
| * [INET]: Shrink struct inet_ehash_bucket on 32 bits UPEric Dumazet2005-10-04
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | No need to align struct inet_ehash_bucket on a 8 bytes boundary. On 32 bits Uniprocessor, that's a waste of 4 bytes per struct (50 %) On other platforms, the attribute is useless, natual alignement is already 8. platform | Size before | Size after patch -------------+-------------+------------------ 32 bits, UP | 8 | 4 32 bits, SMP | 8 | 8 64 bits, UP | 8 | 8 64 bits, SMP | 16 | 16 Signed-off-by: Eric Dumazet <dada1@cosmosbay.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* | [PATCH] fix the breakage in sparc headersAl Viro2005-10-05
| | | | | | | | | | | | | | | | | | | | | | | | | | If we switch extern inline to static inline, we'd better switch the pre-declarations we use to say that these puppies have __attribute_const__ on them. Otherwise we get extern declaration followed by static inline one. Which makes gcc unhappy, and for a good reason... Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [PATCH] Fix broken IXP4xx GPIO macroDeepak Saxena2005-10-04
| | | | | | | | | | | | | | Macro ended up backwards during one of cleanups. Found by Alessandro Zummo. Signed-off-by: Deepak Saxena <dsaxena@plexity.net> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | Merge master.kernel.org:/home/rmk/linux-2.6-armLinus Torvalds2005-10-04
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| * [ARM] 2950/1: i.MX gpio setup functionSascha Hauer2005-10-04
| | | | | | | | | | | | | | | | | | | | | | | | | | Patch from Sascha Hauer Current implementation of imx_gpio_mode does not allow to configure all alternate routing possibilities of the i.MX. With this patch every bit in the gpio setup registers has a corresponding bit in the gpio_mode parameter, so every routing should be possible now. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * [ARM] 2949/1: Hynix h720x Run modeSascha Hauer2005-10-04
| | | | | | | | | | | | | | | | | | | | Patch from Sascha Hauer After coming out of idle mode the h720x goes into slow mode. Switch it back to run mode. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* | [PATCH] uml: Fix sysrq-r support for skas modeAllan Graves2005-10-04
| | | | | | | | | | | | | | | | | | | | | | The old code had the IP and SP coming from the registers in the thread struct, which are completely wrong since those are the userspace registers. This fixes that by pulling the correct values from the jmp_buf in which the kernel state of each thread is stored. Signed-off-by: Allan Graves <allan.graves@oracle.com> Signed-off-by: Jeff Dike <jdike@addtoit.com> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [PATCH] bfs endianness annotationsAlexey Dobriyan2005-10-04
| | | | | | | | | | | | Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [SPARC]: "extern inline" doesn't make much sense.Adrian Bunk2005-10-03
|/ | | | | Signed-off-by: Adrian Bunk <bunk@stusta.de> Signed-off-by: David S. Miller <davem@davemloft.net>
* [IPV4]: Replace __in_dev_get with __in_dev_get_rcu/rtnlHerbert Xu2005-10-03
| | | | | | | | | | | | | | | | | | The following patch renames __in_dev_get() to __in_dev_get_rtnl() and introduces __in_dev_get_rcu() to cover the second case. 1) RCU with refcnt should use in_dev_get(). 2) RCU without refcnt should use __in_dev_get_rcu(). 3) All others must hold RTNL and use __in_dev_get_rtnl(). There is one exception in net/ipv4/route.c which is in fact a pre-existing race condition. I've marked it as such so that we remember to fix it. This patch is based on suggestions and prior work by Suzanne Wood and Paul McKenney. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
* [INET]: speedup inet (tcp/dccp) lookupsEric Dumazet2005-10-03
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Arnaldo and I agreed it could be applied now, because I have other pending patches depending on this one (Thank you Arnaldo) (The other important patch moves skc_refcnt in a separate cache line, so that the SMP/NUMA performance doesnt suffer from cache line ping pongs) 1) First some performance data : -------------------------------- tcp_v4_rcv() wastes a *lot* of time in __inet_lookup_established() The most time critical code is : sk_for_each(sk, node, &head->chain) { if (INET_MATCH(sk, acookie, saddr, daddr, ports, dif)) goto hit; /* You sunk my battleship! */ } The sk_for_each() does use prefetch() hints but only the begining of "struct sock" is prefetched. As INET_MATCH first comparison uses inet_sk(__sk)->daddr, wich is far away from the begining of "struct sock", it has to bring into CPU cache cold cache line. Each iteration has to use at least 2 cache lines. This can be problematic if some chains are very long. 2) The goal ----------- The idea I had is to change things so that INET_MATCH() may return FALSE in 99% of cases only using the data already in the CPU cache, using one cache line per iteration. 3) Description of the patch --------------------------- Adds a new 'unsigned int skc_hash' field in 'struct sock_common', filling a 32 bits hole on 64 bits platform. struct sock_common { unsigned short skc_family; volatile unsigned char skc_state; unsigned char skc_reuse; int skc_bound_dev_if; struct hlist_node skc_node; struct hlist_node skc_bind_node; atomic_t skc_refcnt; + unsigned int skc_hash; struct proto *skc_prot; }; Store in this 32 bits field the full hash, not masked by (ehash_size - 1) Using this full hash as the first comparison done in INET_MATCH permits us immediatly skip the element without touching a second cache line in case of a miss. Suppress the sk_hashent/tw_hashent fields since skc_hash (aliased to sk_hash and tw_hash) already contains the slot number if we mask with (ehash_size - 1) File include/net/inet_hashtables.h 64 bits platforms : #define INET_MATCH(__sk, __hash, __cookie, __saddr, __daddr, __ports, __dif)\ (((__sk)->sk_hash == (__hash)) ((*((__u64 *)&(inet_sk(__sk)->daddr)))== (__cookie)) && \ ((*((__u32 *)&(inet_sk(__sk)->dport))) == (__ports)) && \ (!((__sk)->sk_bound_dev_if) || ((__sk)->sk_bound_dev_if == (__dif)))) 32bits platforms: #define TCP_IPV4_MATCH(__sk, __hash, __cookie, __saddr, __daddr, __ports, __dif)\ (((__sk)->sk_hash == (__hash)) && \ (inet_sk(__sk)->daddr == (__saddr)) && \ (inet_sk(__sk)->rcv_saddr == (__daddr)) && \ (!((__sk)->sk_bound_dev_if) || ((__sk)->sk_bound_dev_if == (__dif)))) - Adds a prefetch(head->chain.first) in __inet_lookup_established()/__tcp_v4_check_established() and __inet6_lookup_established()/__tcp_v6_check_established() and __dccp_v4_check_established() to bring into cache the first element of the list, before the {read|write}_lock(&head->lock); Signed-off-by: Eric Dumazet <dada1@cosmosbay.com> Acked-by: Arnaldo Carvalho de Melo <acme@ghostprotocols.net> Signed-off-by: David S. Miller <davem@davemloft.net>
* [NET]: Fix packet timestamping.Herbert Xu2005-10-03
| | | | | | | | | | | | | | | | | | | I've found the problem in general. It affects any 64-bit architecture. The problem occurs when you change the system time. Suppose that when you boot your system clock is forward by a day. This gets recorded down in skb_tv_base. You then wind the clock back by a day. From that point onwards the offset will be negative which essentially overflows the 32-bit variables they're stored in. In fact, why don't we just store the real time stamp in those 32-bit variables? After all, we're not going to overflow for quite a while yet. When we do overflow, we'll need a better solution of course. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
* Merge master.kernel.org:/pub/scm/linux/kernel/git/jejb/scsi-for-linus-2.6Linus Torvalds2005-10-03
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| * [SCSI] MegaRAID SAS RAID: new driverBagalkote, Sreenivas2005-09-26
| | | | | | | | | | Signed-off-by: Sreenivas Bagalkote <Sreenivas.Bagalkote@lsil.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
| * [SCSI] allow REPORT LUN scanning even for LUN 0 PQ of 3James Bottomley2005-09-25
| | | | | | | | | | | | | | | | | | | | | | Currently we just ignore the device, which means there are a few arrays out there that we don't find. This patch updates the scsi_report_lun_scan() to take a target instead of a device so it can be called on a return of SCSI_SCAN_TARGET_PRESENT, which is what a PQ 3 device returns. Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
* | [PATCH] trivial #if -> #ifdefDiego Calleja2005-10-01
| | | | | | | | | | | | | | | | Use '#ifdef' consistently on __KERNEL__. This was reported as bug #5340 (isn't easier to send a fix than report the bug?!) Signed-off-by: Diego Calleja <diegocg@gmail.com> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [PATCH] x86: hw_irq.h warning fixAndrew Morton2005-09-30
| | | | | | | | | | | | | | | | include/asm/hw_irq.h:70: warning: `struct hw_interrupt_type' declared inside parameter list include/asm/hw_irq.h:70: warning: its scope is only this definition or declaration, which is probably not what you want Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [PATCH] aio: remove unlocked task_list test and resulting raceZach Brown2005-09-30
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Only one of the run or kick path is supposed to put an iocb on the run list. If both of them do it than one of them can end up referencing a freed iocb. The kick path could delete the task_list item from the wait queue before getting the ctx_lock and putting the iocb on the run list. The run path was testing the task_list item outside the lock so that it could catch ki_retry methods that return -EIOCBRETRY *without* putting the iocb on a wait queue and promising to call kick_iocb. This unlocked check could then race with the kick path to cause both to try and put the iocb on the run list. The patch stops the run path from testing task_list by requring that any ki_retry that returns -EIOCBRETRY *must* guarantee that kick_iocb() will be called in the future. aio_p{read,write}, the only in-tree -EIOCBRETRY users, are updated. Signed-off-by: Zach Brown <zach.brown@oracle.com> Signed-off-by: Benjamin LaHaise <bcrl@linux.intel.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [PATCH] x86_64: Add missing () around arguments of pte_index macroKirill Korotaev2005-09-30
| | | | | | | | | | | | | | | | x86-64: Add missing () around arguments of pte_index macro Signed-Off-By: Alexey Kuznetsov <kuznet@ms2.inr.ac.ru> Signed-Off-By: Kirill Korotaev <dev@sw.ru> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | Merge master.kernel.org:/pub/scm/linux/kernel/git/davem/sparc-2.6Linus Torvalds2005-09-30
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| * | [SPARC64]: Kill arch/sparc64/prom/memory.cDavid S. Miller2005-09-29
| | | | | | | | | | | | | | | | | | No longer used. Signed-off-by: David S. Miller <davem@davemloft.net>
| * | [SPARC64]: Rewrite convoluted physical memory probing.David S. Miller2005-09-29
| | | | | | | | | | | | | | | | | | | | | | | | Delete all of the code working with sp_banks[] and replace with clean acquisition and sorting of physical memory parameters from the firmware. Signed-off-by: David S. Miller <davem@davemloft.net>
| * | [SPARC64]: Kill all external references to sp_banks[]David S. Miller2005-09-29
| | | | | | | | | | | | | | | | | | Thus, we can mark sp_banks[] static in arch/sparc64/mm/init.c Signed-off-by: David S. Miller <davem@davemloft.net>
| * | [SPARC]: Declare paging_init() in asm/pgtable.hDavid S. Miller2005-09-29
| | | | | | | | | | | | Signed-off-by: David S. Miller <davem@davemloft.net>
| * | [SPARC64]: Simplify user fault fixup handling.David S. Miller2005-09-29
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Instead of doing byte-at-a-time user accesses to figure out where the fault occurred, read the saved fault_address from the current thread structure. For the sake of defensive programming, if the fault_address does not fall into the user buffer range, simply assume the whole area faulted. This will cause the fixup for copy_from_user() to clear the entire kernel side buffer. Signed-off-by: David S. Miller <davem@davemloft.net>
| * | [SPARC64]: Fix fault handling in unaligned trap handler.David S. Miller2005-09-28
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | We were not calling kernel_mna_trap_fault() correctly. Instead of being fancy, just return 0 vs. -EFAULT from the assembler stubs, and handle that return value as appropriate. Create an "__retl_efault" stub for assembler exception table entries and use it where possible. Signed-off-by: David S. Miller <davem@davemloft.net>
| * | [SPARC64]: Convert to use generic exception table support.David S. Miller2005-09-28
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The funny "range" exception table entries we had were only used by the compat layer socketcall assembly, and it wasn't even needed there. For free we now get proper exception table sorting and fast binary searching. Signed-off-by: David S. Miller <davem@davemloft.net>
* | | [PATCH] missing qualifiers in readb() et.al. on ppcAl Viro2005-09-30
| | | | | | | | | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | | [PATCH] uml get_user() NULL noise removalAl Viro2005-09-30
| | | | | | | | | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | | Merge master.kernel.org:/home/rmk/linux-2.6-armLinus Torvalds2005-09-30
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| * | | [ARM] 2941/1: Fix running legacy binaries from a soft-float root filesystem ↵Daniel Jacobowitz2005-09-29
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | with CONFIG_IWMMXT. Patch from Daniel Jacobowitz Thread flags are inherited on fork(). In order for a binary which has the iWMMXt coprocessor enabled to run a binary which needs the FPA emulation, we need to explicitly clear TIF_USING_IWMMXT if we are not going to set it. Signed-off-by: Daniel Jacobowitz <dan@codesourcery.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* | | | [PATCH] Fix up TLB flush filter disablingAndi Kleen2005-09-29
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | I checked with AMD and they requested to only disable it for family 15. Also disable it for i386 too. And some style fixes. Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | | | Revert task flag re-ordering, add commentsLinus Torvalds2005-09-29
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Roland points out that the flags end up having non-obvious dependencies elsewhere, so revert aa55a08687059aa169d10a313c41f238c2070488 and add some comments about why things are as they are. We'll just have to fix up the broken comparisons. Roland has a patch. Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | | | [PATCH] fix TASK_STOPPED vs TASK_NONINTERACTIVE interactionOleg Nesterov2005-09-29
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | do_signal_stop: for_each_thread(t) { if (t->state < TASK_STOPPED) ++sig->group_stop_count; } However, TASK_NONINTERACTIVE > TASK_STOPPED, so this loop will not count TASK_INTERRUPTIBLE | TASK_NONINTERACTIVE threads. See also wait_task_stopped(), which checks ->state > TASK_STOPPED. Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru> [ We really probably should always use the appropriate bitmasks to test task states, not do it like this. Using something like #define TASK_RUNNABLE (TASK_RUNNING | TASK_INTERRUPTIBLE | \ TASK_UNINTERRUPTIBLE | TASK_NONINTERACTIVE) and then doing "if (task->state & TASK_RUNNABLE)" or similar. But the ordering of the task states is historical, and keeping the ordering does make sense regardless. ] Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | | | Merge master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6Linus Torvalds2005-09-29
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| * | | | [NET]: Fix GCC4 compile error: sysctl in linux/if_ether.hBen Dooks2005-09-27
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The following is generated when compiling a recent (2.6.14-rc2-git5) kernel configured for ARM, with GCC4. CC init/main.o In file included from include/linux/netdevice.h:29, from include/net/sock.h:48, from init/main.c:50: include/linux/if_ether.h:114: error: array type has incomplete element type It seems that if CONFIG_SYSCTL is not set, then the compiler will throw an error due to the definition of the ether_table[] array Attached is a solution to the problem Signed-off-by: Ben Dooks <ben-linux@fluff.org> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | | | [NET]: Add Sun Cassini driver.David S. Miller2005-09-27
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Written by Adrian Sun (asun@darksunrising.com). Ported to 2.6.x by Tom 'spot' Callaway <tcallawa@redhat.com>. Further cleaned up and integrated by David S. Miller Signed-off-by: David S. Miller <davem@davemloft.net>
| * | | | [NET]: Reorder some hot fields of struct net_deviceEric Dumazet2005-09-27
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Place them on separate cache lines in SMP to lower memory bouncing between multiple CPU accessing the device. - One part is mostly used on receive path (including eth_type_trans()) (poll_list, poll, quota, weight, last_rx, dev_addr, broadcast) - One part is mostly used on queue transmit path (qdisc) (queue_lock, qdisc, qdisc_sleeping, qdisc_list, tx_queue_len) - One part is mostly used on xmit path (device) (xmit_lock, xmit_lock_owner, priv, hard_start_xmit, trans_start) 'features' is placed outside of these hot points, in a location that may be shared by all cpus (because mostly read) name_hlist is moved close to name[IFNAMSIZ] to speedup __dev_get_by_name() Signed-off-by: Eric Dumazet <dada1@cosmosbay.com> Signed-off-by: David S. Miller <davem@davemloft.net>
generated by cgit v1.2.2 (git 2.25.0) at 2024-11-27 06:09:36 -0500