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* sbp2: delete sbp2scsi_direction_tableStefan Richter2005-12-132-68/+17
| | | | | | | | DMA_BIDIRECTIONAL data direction may be handled properly by Linux in the future. For now, reject it instead to convert it to another direction. Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de> Signed-off-by: Jody McIntyre <scjody@modernduck.com>
* ieee1394: run high-level updates before high-level probesStefan Richter2005-12-131-3/+17
| | | | | | | | | | | | | | | | | After a bus reset, let nodemgr call high-level update hooks first for nodes which do not need to be probed. The main benefit is for a bus with more than one SBP-2 device: SBP-2 reconnects will be performed before SBP-2 logins, thus have a much higher chance to succeed, and their SCSI devices will not be blocked much longer than necessary. This was demonstrated for Linux 2.4 by Dave Cinege a while ago. A better approach would be to perform time-consuming probes in parallel by a subthread. I actually plan to implement this for sbp2 but it may take a while to get that done and tested. Until then, this tweak is a huge improvement for users with multiple SBP-2 devices. Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de> Signed-off-by: Jody McIntyre <scjody@modernduck.com>
* ieee1394: remove nonexistent functions from nodemgr.hStefan Richter2005-12-051-18/+0
| | | | | Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de> Signed-off-by: Jody McIntyre <scjody@modernduck.com>
* ieee1394: write broadcast_channel only to select nodes (fixes device ↵Stefan Richter2005-12-051-10/+32
| | | | | | | | | | | | | | | | | recognition) Some old 1394-1995 SBP-2 bridges would hang if they received a broadcast write request to BROADCAST_CHANNEL before the config ROM was read. Affected devices include Datafab MD2-FW2 2.5" HDD and SmartDisk VST FWCDRW-V8 portable CD writer. The write request is now directed to specific nodes instead of being broadcast to all nodes at once, and it is only performed if a previous read request at this register succeeded. Fixes an old interoperability problem which was perceived as a 2.6.14-specific regression: http://marc.theaimsgroup.com/?t=113190586800003 Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de> Signed-off-by: Jody McIntyre <scjody@modernduck.com>
* Merge with http://kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6.gitJody McIntyre2005-12-05208-5079/+4927
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| * [PATCH] V4L/DVB (3087) fix analog NTSC for pcHDTV 3000Mauro Carvalho Chehab2005-12-041-0/+2
| | | | | | | | | | | | | | | | | | | | - fix analog NTSC for pcHDTV 3000 - Fix regression: broken analog NTSC for DViCO FusionHDTV3 Gold-T - add tda9887 to card struct, required for both cards. Signed-off-by: Michael Krufky <mkrufky@m1k.net> Signed-off-by: Mauro Carvalho Chehab <mchehab@brturbo.com.br> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
| * Linux v2.6.15-rc5v2.6.15-rc5Linus Torvalds2005-12-041-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Hey, for no other reason than the fact that I'll be off-line for a week. Of course, I could force everybody to just use git (and when I'm emperor of the world, don't think I won't!), but it seems some people want to just test official releases. Even if they are just -rc's. By the time I'm back, Andrew will have fixed all my bugs, and I'll release it as 2.6.15 and take all the credit. Mwahahahaaa Signed-off-by: Linus Torvalds <torvalds@osdl.org>
| * Link USB drivers later in the kernelLinus Torvalds2005-12-041-1/+2
| | | | | | | | | | | | | | | | | | | | | | | | We want to link the "regular" SCSI drivers before the USB storage driver, since historically we've always detected internal SCSI disks before the external USB storage modules. The link order matters for initcall ordering, and this got broken by mistake by commit 7586269c0b52970f60bb69fcb86e765fc1d72309 which moved the USB host controller PCI quirk handling around. Signed-off-by: Linus Torvalds <torvalds@osdl.org>
| * Make vm_insert_page() available to NVidia moduleLinus Torvalds2005-12-041-1/+1
| | | | | | | | | | | | | | | | It used to use remap_pfn_range(), which wasn't GPL-only either, and the new interface is actually simpler and does more checking, so we shouldn't unnecessarily discourage people from switching over. Signed-off-by: Linus Torvalds <torvalds@osdl.org>
| * [PATCH] Fix up per-cpu page batch sizesNick Piggin2005-12-041-8/+8
| | | | | | | | | | | | | | | | | | The code to clamp batch sizes to 2^n - 1 went missing and an extra check got added, which must have been a hunk of the "higer order pcp batch refills" work sneaking in. Signed-off-by: Nick Piggin <npiggin@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
| * [PATCH] libata: fix ata_scsi_pass_thru error handlingTejun Heo2005-12-041-2/+7
| | | | | | | | | | | | | | | | This patch makes ata_scsi_pass_thru() properly set result code and sense data on translation failures. Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
| * NFSv4: Fix an Oops in the synchronous write pathTrond Myklebust2005-12-031-1/+10
| | | | | | | | | | | | | | | | | | | | - Missing initialisation of attribute bitmask in _nfs4_proc_write() - On success, _nfs4_proc_write() must return number of bytes written. - Missing post_op_update_inode() in _nfs4_proc_write() - Missing initialisation of attribute bitmask in _nfs4_proc_commit() - Missing post_op_update_inode() in _nfs4_proc_commit() Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * NFS: Fix post-op attribute revalidation...Trond Myklebust2005-12-032-0/+4
| | | | | | | | | | | | | | - Missing nfs_mark_for_revalidate in nfs_proc_link() - Missing nfs_mark_for_revalidate in nfs_rename() Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * NFS: use set_page_writeback() in the appropriate placesTrond Myklebust2005-12-031-2/+4
| | | | | | | | | | | | | | Ensure that we use set_page_writeback() in the appropriate places to help the VM in keeping its page radix_tree in sync. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * SUNRPC: Fix Oopsable condition in rpc_pipefsTrond Myklebust2005-12-031-1/+1
| | | | | | | | | | | | | | | | | | | | The elements on rpci->in_upcall are tracked by the filp->private_data, which will ensure that they get released when the file is closed. The exception is if rpc_close_pipes() gets called first, since that sets rpci->ops to NULL. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * NFS: Fix a few further cache consistency regressionsTrond Myklebust2005-12-031-34/+20
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Steve Dickson writes: Doing the following: 1. On server: $ mkdir ~/t $ echo Hello > ~/t/tmp 2. On client, wait for a string to appear in this file: $ until grep -q foo t/tmp ; do echo -n . ; sleep 1 ; done 3. On server, create a *new* file with the same name containing that string: $ mv ~/t/tmp ~/t/tmp.old; echo foo > ~/t/tmp will show how the client will never (and I mean never ;-) ) see the updated file. The problem is that we do not update nfsi->cache_change_attribute when the file changes on the server (we only update it when our client makes the changes). This again means that functions like nfs_check_verifier() will fail to register when the parent directory has changed and should trigger a dentry lookup revalidation. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * NFS: Fix cache consistency regressionSteve Dickson2005-12-031-0/+1
| | | | | | | | | | | | | | | | | | Make sure cache_change_attribute is initialized to jiffies so when the mtime changes on directory, the directory will be refreshed. Signed-off by: Steve Dickson <steved@redhat.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * Merge master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6Linus Torvalds2005-12-036-25/+52
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| | * [IPV6]: Load protocol module dynamically.YOSHIFUJI Hideaki2005-12-031-14/+33
| | | | | | | | | | | | | | | | | | | | | | | | [ Modified to match inet_create() bug fix by Herbert Xu -DaveM ] Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
| | * [IPV4] Fix EPROTONOSUPPORT error in inet_createHerbert Xu2005-12-031-4/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | There is a coding error in inet_create that causes it to always return ESOCKTNOSUPPORT. It should return EPROTONOSUPPORT when there are protocols registered for a given socket type but none of them match the requested protocol. This is based on a patch by Jayachandran C. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
| | * [IGMP]: workaround for IGMP v1/v2 bugDavid Stevens2005-12-032-1/+9
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | From: David Stevens <dlstevens@us.ibm.com> As explained at: http://www.cs.ucsb.edu/~krishna/igmp_dos/ With IGMP version 1 and 2 it is possible to inject a unicast report to a client which will make it ignore multicast reports sent later by the router. The fix is to only accept the report if is was sent to a multicast or unicast address. Signed-off-by: David S. Miller <davem@davemloft.net>
| | * [SCTP]: Fix getsockname for sctp when an ipv6 socket accepts a connection fromNeil Horman2005-12-031-1/+2
| | | | | | | | | | | | | | | | | | | | | | | | an ipv4 socket. Signed-off-by: Neil Horman <nhorman@tuxdriver.com> Signed-off-by: Sridhar Samudrala <sri@us.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| | * [SCTP]: Return socket errors only if the receive queue is empty.Neil Horman2005-12-031-5/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch fixes an issue where it is possible to get valid data after a ENOTCONN error. It returns socket errors only after data queued on socket receive queue is consumed. Signed-off-by: Neil Horman <nhorman@tuxdriver.com> Signed-off-by: Sridhar Samudrala <sri@us.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | Add missing "local_irq_enable()" to C2/C3 exit logicLinus Torvalds2005-12-031-0/+1
| |/ | | | | | | | | | | Silly bug crept in with the C2/C3 TIF_POLLING_NRFLAG fixes. Signed-off-by: Linus Torvalds <torvalds@osdl.org>
| * Revert "[SCSI] fix usb storage oops"Linus Torvalds2005-12-031-8/+1
| | | | | | | | | | | | | | | | | | This reverts commit 34ea80ec6a02ad02e6b9c75c478c18e5880d6713. It does a put_device() from softirq context, which is bad since it gets a semaphore for reading. Signed-off-by: Linus Torvalds <torvalds@osdl.org>
| * Merge master.kernel.org:/pub/scm/linux/kernel/git/jejb/scsi-rc-fixes-2.6Linus Torvalds2005-12-0216-133/+225
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| | * [SCSI] sg: fix a bug in st_map_user_pages failure pathHugh Dickins2005-12-021-1/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | sg's st_map_user_pages is modelled on an earlier version of st's sgl_map_user_pages, and has the same bug: if get_user_pages got some but not all of the pages, then those got were released, but the positive res code returned implied that they were still to be freed. Signed-off-by: Hugh Dickins <hugh@veritas.com> Signed-off-by: Douglas Gilbert <dougg@torque.net> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
| | * [SCSI] sg and st unmap_user_pages allow PageReservedHugh Dickins2005-12-022-4/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 2.6.15-rc1 made sg's st_unmap_user_pages and st's sgl_unmap_user_pages BUG on a PageReserved page. But that's wrong: they could be unmapping the ZERO_PAGE, which is marked PG_reserved; and perhaps others (while get_user_pages is still permitted on VM_PFNMAP areas - that may change). More change is needed here: sg claims to dirty even pages written from, and st claims not to dirty even pages read into; and SetPageDirty is not adequate for this nowadays. Fixes to those follow in a later patch: for the moment just fix the 2.6.15 regression. Signed-off-by: Hugh Dickins <hugh@veritas.com> Acked-by: Nick Piggin <npiggin@suse.de> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
| | * [SCSI] st: fix a bug in sgl_map_user_pages failure path Hugh Dickins2005-12-011-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Nick and I had already been looking at drivers/scsi/{sg.c,st.c}, brought there by __put_page in sg.c's peculiar sg_rb_correct4mmap, which we'd like to remove. But that's irrelevant to your pain, except... One extract from the patches I'd like to send Doug and Kai for 2.6.15 or 2.6.16 is this below: since the incomplete get_user_pages path omits to reset res, but has already released all the pages, it will result in premature freeing of user pages, and behaviour just like you've seen. Though I'd have thought incomplete get_user_pages was an exceptional case, and a bit surprised you'd encounter it. Perhaps there's some other premature freeing in the driver, and this instance has nothing whatever to do with it. If the problem were easily reproducible, it'd be great if you could try this patch; but I think you've said it's not :-( Signed-off-by: Kai Makisara <kai.makisara@kolumbus.fi> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
| | * [SCSI] mptfusion: Add maintainersMoore, Eric Dean2005-12-011-0/+9
| | | | | | | | | | | | | | | Signed-off-by: Eric Moore <Eric.Moore@lsil.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
| | * [SCSI] mptfusion : dv performance fixMoore, Eric Dean2005-12-013-2/+75
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Syncronization for Domain Validation workqueue and the initiation of the alternate controller. Its possible that dv could be terminated if the workqueue on the 1st channel doesn complete in time before the 2nd channel begins initialization. Signed-off-by: Eric Moore <Eric.Moore@lsil.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
| | * [SCSI] sym2: Disable IU and QAS negotiationMatthew Wilcox2005-12-011-1/+4
| | | | | | | | | | | | | | | | | | | | | | | | Enabling these features causes problems with some drives, so disable them until they're debugged Signed-off-by: Matthew Wilcox <matthew@wil.cx> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
| | * [SCSI] zfcp: fix return code of zfcp_scsi_slave_allocAndreas Herrmann2005-12-011-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | Change return code in slave_alloc to avoid irritating error message from scsi_alloc_sdev() when scsi stack tries target scan. Signed-off-by: Andreas Herrmann <aherrman@de.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
| | * [SCSI] zfcp: fix link down handling during firmware updateMaxim Shchetynin2005-12-011-19/+31
| | | | | | | | | | | | | | | | | | | | | | | | Don't check link down payload in case of firmware update. Signed-off-by: Maxim Shchetynin <maxim@de.ibm.com> Signed-off-by: Andreas Herrmann <aherrman@de.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
| | * [SCSI] zfcp: fix adapter initializationAndreas Herrmann2005-12-012-85/+64
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Fixed various problems in opening sequence of adapters which was previously changed with NPIV support: o corrected handling when exchange port data function is not supported, otherwise adapters on z900 cannot be opened anymore o corrected setup of timer for exchange port data if called from error recovery o corrected check of return code of exchange config data Signed-off-by: Andreas Herrmann <aherrman@de.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
| | * [SCSI] zfcp: fix spinlock initializationHeiko Carstens2005-12-013-9/+14
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Move initialization of locks and lists to adapter allocation function. Otherwise we might end up with some uninitialized locks, like e.g. the erp locks which only will be inititialized if an error recovery thread for an adapter will be started. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Andreas Herrmann <aherrman@de.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
| | * [SCSI] aacraid: Check scsi_bios_ptabe return codeMark Haverkamp2005-12-011-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | Received from Mark Salyzyn. scsi_bios_ptable return value is not being checked in aac_biosparm. Signed-off-by: Mark Haverkamp <markh@osdl.org> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
| | * [SCSI] SPI DV: be more conservative about echo buffer usageJames Bottomley2005-12-011-9/+19
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Some SCSI devices apparently get very confused if we try to use the echo buffer on a non-DT negotiated bus (this mirrors the problems of using PPR on non-LVD for some devices). The fix is to be far more conservative about when we use an echo buffer. With this patch, we'll now see what parameters are negotiated by the read only test, and only look for an echo buffer if DT is negotiated. Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
| | * [SCSI] aic7xxx: reset handler selects a wrong commandVasily Averin2005-11-282-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | To transport scsi reset command to device aic7xxx reset handler looks at the driver's pending_list and searches any proper command. However the search condition has been inverted: ahc_match_scb() returns TRUE if a matched command is found. As a result the reset on required devices did not turn out well, a correctly working neighbour device may be surprised by the reset. aic7xxx reset handler reports about the success, but really the original situation is not corrected yet. Signed-off-by: Vasily Averin <vvs@sw.ru> Naturally, there's a corresponding problem in the aic79xx driver, so I've also added the same fix for that. Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
| * | [PATCH] Fix TIF_POLLING_NRFLAG in ACPI idle routinesNick Piggin2005-12-021-7/+14
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Commit 64c7c8f88559624abdbe12b5da6502e8879f8d28 broke the ACPI C2 and C3 sleep states, because it left TIF_POLLING_NRFLAG active even though those states do not actually poll the reschedule flag at all. As a result, the CPU wouldn't get sent an IPI when it was to be woken up, and would only notice that it had runnable processes on the next timer tick. Signed-off-by: Linus Torvalds <torvalds@osdl.org>
| * | Merge master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6Linus Torvalds2005-12-024-20/+47
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| | * | [NETLINK]: Fix processing of fib_lookup netlink messagesThomas Graf2005-12-011-2/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The receive path for fib_lookup netlink messages is lacking sanity checks for header and payload and is thus vulnerable to malformed netlink messages causing illegal memory references. Signed-off-by: Thomas Graf <tgraf@suug.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
| | * | [NETFILTER]: Fix recent match jiffies wrap mismatchesPhil Oester2005-12-011-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Around jiffies wrap time (i.e. within first 5 mins after boot), recent match rules which contain both --seconds and --hitcount arguments experience false matches. This is because the last_pkts array is filled with zeros on creation, and when comparing 'now' to 0 (+ --seconds argument), time_before_eq thinks it has found a hit. Below patch adds a break if the packet value is zero. This has the unfortunate side effect of causing mismatches if a packet was received when jiffies really was equal to zero. The odds of that happening are slim compared to the problems caused by not adding the break however. Plus, the author used this same method just below, so it is "good enough". This fixes netfilter bugs #383 and #395. Signed-off-by: Phil Oester <kernel@linuxace.com> Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
| | * | [NETFILTER]: Ignore ACKs ACKs on half open connections in TCP conntrackJozsef Kadlecsik2005-12-012-18/+40
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Mounting NFS file systems after a (warm) reboot could take a long time if firewalling and connection tracking was enabled. The reason is that the NFS clients tends to use the same ports (800 and counting down). Now on reboot, the server would still have a TCB for an existing TCP connection client:800 -> server:2049. The client sends a SYN from port 800 to server:2049, which elicits an ACK from the server. The firewall on the client drops the ACK because (from its point of view) the connection is still in half-open state, and it expects to see a SYNACK. The client will eventually time out after several minutes. The following patch corrects this, by accepting ACKs on half open connections as well. Signed-off-by: Jozsef Kadlecsik <kadlec@blackhole.kfki.hu> Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | | Merge master.kernel.org:/home/rmk/linux-2.6-armLinus Torvalds2005-12-026-10/+51
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| | * | | [ARM] sema_count() removalArthur Othieno2005-12-011-5/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | sema_count() defined only for ARM but not used anywhere. Signed-off-by: Arthur Othieno <a.othieno@bluewin.ch> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| | * | | [ARM] 3188/1: Add missing i2c dependency for AkitaRichard Purdie2005-12-012-1/+20
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Patch from Richard Purdie Akita requires inbuilt kernel i2c support for its GPIOs. Add this requirement to Kconfig and update the defconfig to match. Signed-off-by: Richard Purdie <rpurdie@rpsys.net> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| | * | | [ARM] Fix IXDP425 setup bugJeff Hansen2005-12-011-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | There is a typo in the ARM IXDP425 setup definition that mistakenly tries to use UART1's IRQ for UART2's traffic. Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| | * | | [ARM SMP] Use event instructions for spinlocksRussell King2005-12-011-2/+24
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | ARMv6K CPUs have SEV (send event) and WFE (wait for event) instructions which allow the CPU clock to be suspended until another CPU issues a SEV, rather than spinning on the lock wasting power. Make use of these instructions. Note that WFE does not wait if an event has been sent since the last WFE cleared the event status, so although it may look racy, the instruction implementation ensures that these are dealt with. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| | * | | [ARM SMP] Disable lazy flush_dcache_page for SMPRussell King2005-11-301-1/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Lazy flush_dcache_page() causes userspace instability on SMP platforms, so disable it for now. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-26 20:50:39 +0100