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* xilinx_hwicap: remove improper wording in license statementGreg Kroah-Hartman2008-12-176-18/+0
| | | | | | | | | | GPLv2 doesn't allow additional restrictions to be imposed on any code, so this wording needs to be removed from these files. Signed-off-by: Stephen Neuendorffer <stephen.neuendorffer@xilinx.com> Cc: stable <stable@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* driver core: fix using 'ret' variable in unregister_dynamic_debug_moduleJohann Felix Soden2008-12-171-1/+1
| | | | | | | | | The 'ret' variable is assigned, but not used in the return statement. Fix this. Signed-off-by: Johann Felix Soden <johfel@users.sourceforge.net> Acked-by: Jason Baron <jbaron@redhat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* Merge branch 'for-linus' of ↵Linus Torvalds2008-12-161-0/+6
|\ | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394-2.6 * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394-2.6: ieee1394: add quirk fix for Freecom HDD
| * ieee1394: add quirk fix for Freecom HDDStefan Richter2008-12-141-0/+6
| | | | | | | | | | | | | | | | | | | | According to http://bugzilla.kernel.org/show_bug.cgi?id=12206, Freecom FireWire Hard Drive 1TB reports max_rom=2 but returns garbage if block read requests are used to read the config ROM. Force max_rom=0 to limit them to quadlet read requests. Reported-by: Christian Mueller <cm1@mumac.de> Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
* | Merge branch 'upstream-linus' of ↵Linus Torvalds2008-12-162-9/+68
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/jgarzik/libata-dev * 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jgarzik/libata-dev: pata_hpt366: no ATAPI DMA pata_hpt366: fix cable detection, libata: fix Seagate NCQ+FLUSH blacklist
| * | pata_hpt366: no ATAPI DMATejun Heo2008-12-161-1/+3
| | | | | | | | | | | | | | | | | | | | | | | | IDE hpt366 driver doesn't allow DMA for ATAPI devices and MWDMA2 on ATAPI device locks up pata_hpt366. Follow the suit. Signed-off-by: Tejun Heo <tj@kernel.org> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
| * | pata_hpt366: fix cable detection,Tejun Heo2008-12-161-2/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | pata_hpt366 is strange in that its two channels occupy two PCI functions and both are primary channels and bit1 of PCI configuration register 0x5A indicates cable for both channels. Signed-off-by: Tejun Heo <tj@kernel.org> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Cc: Sergei Shtylyov <sshtylyov@ru.mvista.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
| * | libata: fix Seagate NCQ+FLUSH blacklistTejun Heo2008-12-161-6/+59
| | | | | | | | | | | | | | | | | | | | | | | | Due to miscommunication, P/N was mistaken as firmware revision strings. Update it. Signed-off-by: Tejun Heo <tj@kernel.org> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
* | | Merge branch 'sh/for-2.6.28' of ↵Linus Torvalds2008-12-162-1/+3
|\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6 * 'sh/for-2.6.28' of git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6: sh: Disable GENERIC_HARDIRQS_NO__DO_IRQ for unconverted platforms. sh: maple: Do not pass SLAB_POISON to kmem_cache_create()
| * | | sh: Disable GENERIC_HARDIRQS_NO__DO_IRQ for unconverted platforms.Paul Mundt2008-12-161-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Presently limited to Cayman, Dreamcast, Microdev, and SystemH 7751. Re-enable it for everyone once these have been fixed up. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| * | | sh: maple: Do not pass SLAB_POISON to kmem_cache_create()Matt Fleming2008-12-161-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | SLAB_POISON is not a valid flag for kmem_create_cache() unless CONFIG_DEBUG_SLAB is set, so remove it from the flags argument. Acked-by: Adrian McMenamin <adrian@newgolddream.dyndns.info> Signed-off-by: Matt Fleming <mjf@gentoo.org> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* | | | Merge branch 'merge' of ↵Linus Torvalds2008-12-163-5/+17
|\ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc * 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc: powerpc/cell/axon-msi: Fix MSI after kexec powerpc: Fix bootmem reservation on uninitialized node powerpc: Check for valid hugepage size in hugetlb_get_unmapped_area
| * | | | powerpc/cell/axon-msi: Fix MSI after kexecArnd Bergmann2008-12-161-0/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Commit d015fe995 'powerpc/cell/axon-msi: Retry on missing interrupt' has turned a rare failure to kexec on QS22 into a reproducible error, which we have now analysed. The problem is that after a kexec, the MSIC hardware still points into the middle of the old ring buffer. We set up the ring buffer during reboot, but not the offset into it. On older kernels, this would cause a storm of thousands of spurious interrupts after a kexec, which would most of the time get dropped silently. With the new code, we time out on each interrupt, waiting for it to become valid. If more interrupts come in that we time out on, this goes on indefinitely, which eventually leads to a hard crash. The solution in this commit is to read the current offset from the MSIC when reinitializing it. This now works correctly, as expected. Reported-by: Dirk Herrendoerfer <d.herrendoerfer@de.ibm.com> Signed-off-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * | | | powerpc: Fix bootmem reservation on uninitialized nodeDave Hansen2008-12-161-5/+11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | careful_allocation() was calling into the bootmem allocator for nodes which had not been fully initialized and caused a previous bug: http://patchwork.ozlabs.org/patch/10528/ So, I merged a few broken out loops in do_init_bootmem() to fix it. That changed the code ordering. I think this bug is triggered by having reserved areas for a node which are spanned by another node's contents. In the mark_reserved_regions_for_nid() code, we attempt to reserve the area for a node before we have allocated the NODE_DATA() for that nid. We do this since I reordered that loop. I suck. This is causing crashes at bootup on some systems, as reported by Jon Tollefson. This may only present on some systems that have 16GB pages reserved. But, it can probably happen on any system that is trying to reserve large swaths of memory that happen to span other nodes' contents. This commit ensures that we do not touch bootmem for any node which has not been initialized, and also removes a compile warning about an unused variable. Signed-off-by: Dave Hansen <dave@linux.vnet.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * | | | powerpc: Check for valid hugepage size in hugetlb_get_unmapped_areaBrian King2008-12-161-0/+3
| |/ / / | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | It looks like most of the hugetlb code is doing the correct thing if hugepages are not supported, but the mmap code is not. If we get into the mmap code when hugepages are not supported, such as in an LPAR which is running Active Memory Sharing, we can oops the kernel. This fixes the oops being seen in this path. oops: Kernel access of bad area, sig: 11 [#1] SMP NR_CPUS=1024 NUMA pSeries Modules linked in: nfs(N) lockd(N) nfs_acl(N) sunrpc(N) ipv6(N) fuse(N) loop(N) dm_mod(N) sg(N) ibmveth(N) sd_mod(N) crc_t10dif(N) ibmvscsic(N) scsi_transport_srp(N) scsi_tgt(N) scsi_mod(N) Supported: No NIP: c000000000038d60 LR: c00000000003945c CTR: c0000000000393f0 REGS: c000000077e7b830 TRAP: 0300 Tainted: G (2.6.27.5-bz50170-2-ppc64) MSR: 8000000000009032 <EE,ME,IR,DR> CR: 44000448 XER: 20000001 DAR: c000002000af90a8, DSISR: 0000000040000000 TASK = c00000007c1b8600[4019] 'hugemmap01' THREAD: c000000077e78000 CPU: 6 GPR00: 0000001fffffffe0 c000000077e7bab0 c0000000009a4e78 0000000000000000 GPR04: 0000000000010000 0000000000000001 00000000ffffffff 0000000000000001 GPR08: 0000000000000000 c000000000af90c8 0000000000000001 0000000000000000 GPR12: 000000000000003f c000000000a73880 0000000000000000 0000000000000000 GPR16: 0000000000000000 0000000000000000 0000000000000000 0000000000010000 GPR20: 0000000000000000 0000000000000003 0000000000010000 0000000000000001 GPR24: 0000000000000003 0000000000000000 0000000000000001 ffffffffffffffb5 GPR28: c000000077ca2e80 0000000000000000 c00000000092af78 0000000000010000 NIP [c000000000038d60] .slice_get_unmapped_area+0x6c/0x4e0 LR [c00000000003945c] .hugetlb_get_unmapped_area+0x6c/0x80 Call Trace: [c000000077e7bbc0] [c00000000003945c] .hugetlb_get_unmapped_area+0x6c/0x80 [c000000077e7bc30] [c000000000107e30] .get_unmapped_area+0x64/0xd8 [c000000077e7bcb0] [c00000000010b140] .do_mmap_pgoff+0x140/0x420 [c000000077e7bd80] [c00000000000bf5c] .sys_mmap+0xc4/0x140 [c000000077e7be30] [c0000000000086b4] syscall_exit+0x0/0x40 Instruction dump: fac1ffb0 fae1ffb8 fb01ffc0 fb21ffc8 fb41ffd0 fb61ffd8 fb81ffe0 fbc1fff0 fbe1fff8 f821fef1 f8c10158 f8e10160 <7d49002e> f9010168 e92d01b0 eb4902b0 Signed-off-by: Brian King <brking@linux.vnet.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
* | / / mm: Don't touch uninitialized variable in do_pages_stat_array()KOSAKI Motohiro2008-12-161-1/+1
| |/ / |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Commit 80bba1290ab5122c60cdb73332b26d288dc8aedd removed one necessary variable initialization. As a result following warning happened: CC mm/migrate.o mm/migrate.c: In function 'sys_move_pages': mm/migrate.c:1001: warning: 'err' may be used uninitialized in this function More unfortunately, if find_vma() failed, kernel read uninitialized memory. Signed-off-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> CC: Brice Goglin <Brice.Goglin@inria.fr> Cc: Christoph Lameter <clameter@sgi.com> Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Cc: Nick Piggin <npiggin@suse.de> Cc: Hugh Dickins <hugh@veritas.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | Merge master.kernel.org:/home/rmk/linux-2.6-armLinus Torvalds2008-12-156-7/+8
|\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * master.kernel.org:/home/rmk/linux-2.6-arm: [ARM] 5348/1: fix documentation wrt location of the alignment trap interface [ARM] Ensure linux/hardirqs.h is included where required [ARM] fix kernel-doc syntax [ARM] arch/arm/common/sa1111.c: Correct error handling code [ARM] 5341/2: there is no copy_page on nommu ARM
| * | | [ARM] 5348/1: fix documentation wrt location of the alignment trap interfaceNicolas Pitre2008-12-151-1/+1
| | | | | | | | | | | | | | | | | | | | Signed-off-by: Nicolas Pitre <nico@marvell.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * | | [ARM] Ensure linux/hardirqs.h is included where requiredRussell King2008-12-152-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | ... for the removal of it from asm-generic/local.h Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * | | [ARM] fix kernel-doc syntaxRandy Dunlap2008-12-141-3/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Fix kernel-doc notation to use correct syntax. Even though this should be moved to where the function is actually implemented... Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * | | [ARM] arch/arm/common/sa1111.c: Correct error handling codeJulia Lawall2008-12-141-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | If it is reasonable to apply PTR_ERR to the result of calling clk_get, then that result should first be tested with IS_ERR, not with !. The semantic patch that makes this change is as follows: (http://www.emn.fr/x-info/coccinelle/) // <smpl> @@ expression E,E1; @@ if ( - E == NULL + IS_ERR(E) ) { <+... when != E = E1 PTR_ERR(E) ...+> } // </smpl> Signed-off-by: Julia Lawall <julia@diku.dk> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * | | [ARM] 5341/2: there is no copy_page on nommu ARMNicolas Pitre2008-12-111-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | ... as it is defined with memcpy, therefore no copy_page symbol to export. Signed-off-by: Nicolas Pitre <nico@cam.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* | | | Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6Linus Torvalds2008-12-1511-156/+164
|\ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: Phonet: keep TX queue disabled when the device is off SCHED: netem: Correct documentation comment in code. netfilter: update rwlock initialization for nat_table netlabel: Compiler warning and NULL pointer dereference fix e1000e: fix double release of mutex IA64: HP_SIMETH needs to depend upon NET netpoll: fix race on poll_list resulting in garbage entry ipv6: silence log messages for locally generated multicast sungem: improve ethtool output with internal pcs and serdes tcp: tcp_vegas cong avoid fix sungem: Make PCS PHY support partially work again.
| * | | | Phonet: keep TX queue disabled when the device is offRémi Denis-Courmont2008-12-151-5/+22
| | | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: Rémi Denis-Courmont <remi.denis-courmont@nokia.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | | | SCHED: netem: Correct documentation comment in code.Jesper Dangaard Brouer2008-12-151-3/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The netem simulator is no longer limited by Linux timer resolution HZ. Not since Patrick McHardy changed the QoS system to use hrtimer. Signed-off-by: Jesper Dangaard Brouer <hawk@comx.dk> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | | | netfilter: update rwlock initialization for nat_tableSteven Rostedt2008-12-151-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The commit e099a173573ce1ba171092aee7bb3c72ea686e59 (netfilter: netns nat: per-netns NAT table) renamed the nat_table from __nat_table to nat_table without updating the __RW_LOCK_UNLOCKED(__nat_table.lock). Signed-off-by: Steven Rostedt <srostedt@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | | | netlabel: Compiler warning and NULL pointer dereference fixPaul Moore2008-12-111-18/+20
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Fix the two compiler warnings show below. Thanks to Geert Uytterhoeven for finding and reporting the problem. net/netlabel/netlabel_unlabeled.c:567: warning: 'entry' may be used uninitialized in this function net/netlabel/netlabel_unlabeled.c:629: warning: 'entry' may be used uninitialized in this function Signed-off-by: Paul Moore <paul.moore@hp.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | | | e1000e: fix double release of mutexJeff Kirsher2008-12-111-2/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | During a reset, releasing the swflag after it failed to be acquired would cause a double unlock of the mutex. Instead, test whether acquisition of the swflag was successful and if not, do not release the swflag. The reset must still be done to bring the device to a quiescent state. This resolves [BUG 12200] BUG: bad unlock balance detected! e1000e http://bugzilla.kernel.org/show_bug.cgi?id=12200 Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | | | IA64: HP_SIMETH needs to depend upon NETAlexander Beregalov2008-12-101-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | From: Alexander Beregalov <a.beregalov@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | | | netpoll: fix race on poll_list resulting in garbage entryNeil Horman2008-12-092-0/+9
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | A few months back a race was discused between the netpoll napi service path, and the fast path through net_rx_action: http://kerneltrap.org/mailarchive/linux-netdev/2007/10/16/345470 A patch was submitted for that bug, but I think we missed a case. Consider the following scenario: INITIAL STATE CPU0 has one napi_struct A on its poll_list CPU1 is calling netpoll_send_skb and needs to call poll_napi on the same napi_struct A that CPU0 has on its list CPU0 CPU1 net_rx_action poll_napi !list_empty (returns true) locks poll_lock for A poll_one_napi napi->poll netif_rx_complete __napi_complete (removes A from poll_list) list_entry(list->next) In the above scenario, net_rx_action assumes that the per-cpu poll_list is exclusive to that cpu. netpoll of course violates that, and because the netpoll path can dequeue from the poll list, its possible for CPU0 to detect a non-empty list at the top of the while loop in net_rx_action, but have it become empty by the time it calls list_entry. Since the poll_list isn't surrounded by any other structure, the returned data from that list_entry call in this situation is garbage, and any number of crashes can result based on what exactly that garbage is. Given that its not fasible for performance reasons to place exclusive locks arround each cpus poll list to provide that mutal exclusion, I think the best solution is modify the netpoll path in such a way that we continue to guarantee that the poll_list for a cpu is in fact exclusive to that cpu. To do this I've implemented the patch below. It adds an additional bit to the state field in the napi_struct. When executing napi->poll from the netpoll_path, this bit will be set. When a driver calls netif_rx_complete, if that bit is set, it will not remove the napi_struct from the poll_list. That work will be saved for the next iteration of net_rx_action. I've tested this and it seems to work well. About the biggest drawback I can see to it is the fact that it might result in an extra loop through net_rx_action in the event that the device is actually contended for (i.e. the netpoll path actually preforms all the needed work no the device, and the call to net_rx_action winds up doing nothing, except removing the napi_struct from the poll_list. However I think this is probably a small price to pay, given that the alternative is a crash. Signed-off-by: Neil Horman <nhorman@tuxdriver.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | | | ipv6: silence log messages for locally generated multicastJan Sembera2008-12-091-1/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch fixes minor annoyance during transmission of unsolicited neighbor advertisements from userspace to multicast addresses (as far as I can see in RFC, this is allowed and the similar functionality for IPv4 has been in arping for a long time). Outgoing multicast packets get reinserted into local processing as if they are received from the network. The machine thus sees its own NA and fills the logs with error messages. This patch removes the message if NA has been generated locally. Signed-off-by: Jan Sembera <jsembera@suse.cz> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | | | sungem: improve ethtool output with internal pcs and serdesHermann Lauer2008-12-091-0/+15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | From: Hermann Lauer <Hermann.Lauer@iwr.uni-heidelberg.de> Attached is a patch which improves the output of ethtool (see below) to some sensefull values with a sungem fibre card which uses the sungem interal pcs connected to a serdes chip. The seriallink case in the driver is untouched. Most values are hardcoded, because gigabit fibre autoneg is anyways limited and the driver don't really support much at the moment with that hardware. Signed-off-by: David S. Miller <davem@davemloft.net>
| * | | | tcp: tcp_vegas cong avoid fix Doug Leith2008-12-091-70/+10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch addresses a book-keeping issue in tcp_vegas.c. At present tcp_vegas does separate book-keeping of cwnd based on packet sequence numbers. A mismatch can develop between this book-keeping and tp->snd_cwnd due, for example, to delayed acks acking multiple packets. When vegas transitions to reno operation (e.g. following loss), then this mismatch leads to incorrect behaviour (akin to a cwnd backoff). This seems mostly to affect operation at low cwnds where delayed acking can lead to a significant fraction of cwnd being covered by a single ack, leading to the book-keeping mismatch. This patch modifies the congestion avoidance update to avoid the need for separate book-keeping while leaving vegas congestion avoidance functionally unchanged. A secondary advantage of this modification is that the use of fixed-point (via V_PARAM_SHIFT) and 64 bit arithmetic is no longer necessary, simplifying the code. Some example test measurements with the patched code (confirming no functional change in the congestion avoidance algorithm) can be seen at: http://www.hamilton.ie/doug/vegaspatch/ Signed-off-by: Doug Leith <doug.leith@nuim.ie> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | | | sungem: Make PCS PHY support partially work again.David S. Miller2008-12-091-56/+73
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | As reported by Hermann Lauer, PCS PHY support in the sungem driver simply doesn't work. When the chip is reset due to open, or some other similar operation, the PCS is reset too but we don't program it back into a running state. The result is no link when the device is brought up. This partially rectifies the situation for the moment, by kicking the PCS after a sungem chip reset so that it will renegotiate and be re-enabled again. The behavior is still a little bit dodgy as the added renegotiate make the link take some time after bringing the interface up, but this is a significant improvement in that things actually work now :-) Based almost entirely upon an initial patch by Hermann. Signed-off-by: David S. Miller <davem@davemloft.net>
* | | | | Define smp_call_function_many for UPRusty Russell2008-12-151-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Otherwise those using it in transition patches (eg. kvm) can't compile with CONFIG_SMP=n: arch/x86/kvm/../../../virt/kvm/kvm_main.c: In function 'make_all_cpus_request': arch/x86/kvm/../../../virt/kvm/kvm_main.c:380: error: implicit declaration of function 'smp_call_function_many' Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | | | cgroups: fix a race between rmdir and remountPaul Menage2008-12-151-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When a cgroup is removed, it's unlinked from its parent's children list, but not actually freed until the last dentry on it is released (at which point cgrp->root->number_of_cgroups is decremented). Currently rebind_subsystems checks for the top cgroup's child list being empty in order to rebind subsystems into or out of a hierarchy - this can result in the set of subsystems bound to a hierarchy being removed-but-not-freed cgroup. The simplest fix for this is to forbid remounts that change the set of subsystems on a hierarchy that has removed-but-not-freed cgroups. This bug can be reproduced via: mkdir /mnt/cg mount -t cgroup -o ns,freezer cgroup /mnt/cg mkdir /mnt/cg/foo sleep 1h < /mnt/cg/foo & rmdir /mnt/cg/foo mount -t cgroup -o remount,ns,devices,freezer cgroup /mnt/cg kill $! Though the above will cause oops in -mm only but not mainline, but the bug can cause memory leak in mainline (and even oops) Signed-off-by: Paul Menage <menage@google.com> Reviewed-by: Li Zefan <lizf@cn.fujitsu.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | | | ACPI toshiba: only register rfkill if bt is enabledFrederik Deweerdt2008-12-151-25/+29
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Part of the rfkill initialization was done whenever BT was on or not. The following patch checks for BT presence before registering the rfkill to the input layer. Some minor cleanups (> 80 char lines) were also added in the process. On Tue, Oct 28, 2008 at 10:10:37PM +0300, Andrey Borzenkov wrote: [...] > [ 66.633036] toshiba_acpi: Toshiba Laptop ACPI Extras version 0.19 > [ 66.633054] toshiba_acpi: HCI method: \_SB_.VALD.GHCI > [ 66.637764] input: Toshiba RFKill Switch as /devices/virtual/input/input3 [...] > [ 113.920753] ------------[ cut here ]------------ > [ 113.920828] kernel BUG at /home/bor/src/linux-git/net/rfkill/rfkill.c:347! > [ 113.920845] invalid opcode: 0000 [#1] > [ 113.920877] last sysfs file: /sys/devices/pci0000:00/0000:00:04.0/host0/target0:0:0/0:0:0:0/block/sda/size > [ 113.920900] Dumping ftrace buffer: > [ 113.920919] (ftrace buffer empty) > [ 113.920933] Modules linked in: af_packet irnet ppp_generic slhc ircomm_tty ircomm binfmt_misc loop dm_mirror dm_region_hash dm_log dm_round_robin dm_multipath dm_mod alim15x3 ide_core nvram toshiba cryptomgr aead crypto_blkcipher michael_mic crypto_algapi orinoco_cs orinoco hermes_dld hermes pcmcia firmware_class snd_ali5451 snd_ac97_codec ac97_bus snd_seq_dummy snd_seq_oss snd_seq_midi_event snd_seq snd_seq_device smsc_ircc2 snd_pcm_oss snd_pcm rtc_cmos irda snd_timer snd_mixer_oss rtc_core snd crc_ccitt yenta_socket rtc_lib rsrc_nonstatic i2c_ali1535 pcmcia_core pcspkr psmouse soundcore i2c_core evdev sr_mod snd_page_alloc alim1535_wdt cdrom fan sg video output toshiba_acpi rfkill thermal backlight ali_agp processor ac button input_polldev battery agpgart ohci_hcd usbcore reiserfs pata_ali libata sd_mod scsi_mod [last unloaded: scsi_wait_scan] > [ 113.921765] > [ 113.921785] Pid: 3272, comm: ipolldevd Not tainted (2.6.28-rc2-1avb #3) PORTEGE 4000 > [ 113.921801] EIP: 0060:[<dfaa4683>] EFLAGS: 00010246 CPU: 0 > [ 113.921854] EIP is at rfkill_force_state+0x53/0x90 [rfkill] > [ 113.921870] EAX: 00000000 EBX: 00000000 ECX: 00000003 EDX: 00000000 > [ 113.921885] ESI: 00000000 EDI: ddd50300 EBP: d8d7af40 ESP: d8d7af24 > [ 113.921900] DS: 007b ES: 007b FS: 0000 GS: 0000 SS: 0068 > [ 113.921918] Process ipolldevd (pid: 3272, ti=d8d7a000 task=d8d93c90 task.ti=d8d7a000) > [ 113.921933] Stack: > [ 113.921945] d8d7af38 00000246 dfb029d8 dfb029c0 dfb029d8 dfb029c0 ddd50300 d8d7af5c > [ 113.922014] dfb018e2 01000246 01000000 ddd50300 ddd50314 ddabb8a0 d8d7af68 dfb381c1 > [ 113.922098] 00000000 d8d7afa4 c012ec0a 00000000 00000002 00000000 c012eba8 ddabb8c0 > [ 113.922240] Call Trace: > [ 113.922240] [<dfb018e2>] ? bt_poll_rfkill+0x5c/0x82 [toshiba_acpi] > [ 113.922240] [<dfb381c1>] ? input_polled_device_work+0x11/0x40 [input_polldev] > [ 113.922240] [<c012ec0a>] ? run_workqueue+0xea/0x1f0 > [ 113.922240] [<c012eba8>] ? run_workqueue+0x88/0x1f0 > [ 113.922240] [<dfb381b0>] ? input_polled_device_work+0x0/0x40 [input_polldev] > [ 113.922240] [<c012f047>] ? worker_thread+0x87/0xf0 > [ 113.922240] [<c0132b00>] ? autoremove_wake_function+0x0/0x50 > [ 113.922240] [<c012efc0>] ? worker_thread+0x0/0xf0 > [ 113.922240] [<c013280f>] ? kthread+0x3f/0x80 > [ 113.922240] [<c01327d0>] ? kthread+0x0/0x80 > [ 113.922240] [<c01040d7>] ? kernel_thread_helper+0x7/0x10 > [ 113.922240] Code: 43 54 89 73 54 39 c6 74 11 89 d9 ba 01 00 00 00 b8 40 68 aa df e8 3e 35 69 e0 89 f8 e8 77 fd 85 e0 31 c0 83 c4 10 5b 5e 5f 5d c3 <0f> 0b eb fe 89 f6 8d bc 27 00 00 00 00 be f4 4d aa df bb 5f 01 > [ 113.922240] EIP: [<dfaa4683>] rfkill_force_state+0x53/0x90 [rfkill] SS:ESP 0068:d8d7af24 > [ 113.924700] ---[ end trace 0e404eb40cadd5f0 ]--- Signed-off-by: Frederik Deweerdt <frederik.deweerdt@gmail.com> Tested-by: Andrey Borzenkov <arvidjaar@mail.ru> Acked-by: Len Brown <len.brown@intel.com> Cc: Richard Purdie <rpurdie@rpsys.net> Acked-by: Philip Langdale <philipl@overt.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | | | eCryptfs: Update maintainersMichael Halcrow2008-12-151-4/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Tyler Hicks and Dustin Kirkland are now the primary contact points for eCryptfs issues that may arise from this point forward. Signed-off-by: Michael Halcrow <mhalcrow@us.ibm.com> Acked-by: Tyler Hicks <tyhicks@linux.vnet.ibm.com> Acked-by: Dustin Kirkland <kirkland@canonical.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | | | slob: do not pass the SLAB flags as GFP in kmem_cache_create()Catalin Marinas2008-12-151-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The kmem_cache_create() function in the slob allocator passes the SLAB flags as GFP flags to the slob_alloc() function. The patch changes this call to pass GFP_KERNEL as the other allocators seem to do. Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> Acked-by: Matt Mackall <mpm@selenic.com> Cc: Cyrill Gorcunov <gorcunov@gmail.com> Cc: Christoph Lameter <cl@linux-foundation.org> Cc: Pekka Enberg <penberg@cs.helsinki.fi> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | | | pcmcia: blackfin: fix bug - add missing ; to MODULE macroMike Frysinger2008-12-151-1/+1
| |_|/ / |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Cc: Michael Hennerich <michael.hennerich@analog.com> Signed-off-by: Mike Frysinger <vapier.adi@gmail.com> Signed-off-by: Bryan Wu <cooloney@kernel.org> Cc: Dominik Brodowski <linux@dominikbrodowski.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | | Merge branch 'merge' of ↵Linus Torvalds2008-12-141-0/+3
|\ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/galak/powerpc * 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/galak/powerpc: powerpc/fsl-booke: Fix problem with _tlbil_va being interrupted
| * | | | powerpc/fsl-booke: Fix problem with _tlbil_va being interruptedKumar Gala2008-12-131-0/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | An example calling sequence which we did see: copy_user_highpage -> kmap_atomic -> flush_tlb_page -> _tlbil_va We got interrupted after setting up the MAS registers before the tlbwe and the interrupt handler that caused the interrupt also did a kmap_atomic (ide code) and thus on returning from the interrupt the MAS registers no longer contained the proper values. Since we dont save/restore MAS registers for normal interrupts we need to disable interrupts in _tlbil_va to ensure atomicity. Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
* | | | | x86 Fix VMI crash on boot in 2.6.28-rc8Zachary Amsden2008-12-144-15/+23
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | VMI initialiation can relocate the fixmap, causing early_ioremap to malfunction if it is initialized before the relocation. To fix this, VMI activation is split into two phases; the detection, which must happen before setting up ioremap, and the activation, which must happen after parsing early boot parameters. This fixes a crash on boot when VMI is enabled under VMware. Signed-off-by: Zachary Amsden <zach@vmware.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | | | Revert "sched_clock: prevent scd->clock from moving backwards"Linus Torvalds2008-12-141-3/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This reverts commit 5b7dba4ff834259a5623e03a565748704a8fe449, which caused a regression in hibernate, reported by and bisected by Fabio Comolli. This revert fixes http://bugzilla.kernel.org/show_bug.cgi?id=12155 http://bugzilla.kernel.org/show_bug.cgi?id=12149 Bisected-by: Fabio Comolli <fabio.comolli@gmail.com> Requested-by: Rafael J. Wysocki <rjw@sisk.pl> Acked-by: Dave Kleikamp <shaggy@linux.vnet.ibm.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Ingo Molnar <mingo@elte.hu> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | | | Merge branch 'merge' of ↵Linus Torvalds2008-12-131-0/+1
|\ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/jwboyer/powerpc-4xx * 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/jwboyer/powerpc-4xx: powerpc/40x: Add proper BOOTCFLAGS for cuboot-acadia
| * | | | | powerpc/40x: Add proper BOOTCFLAGS for cuboot-acadiaJosh Boyer2008-12-111-0/+1
| |/ / / / | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The cuboot-acadia.c wrapper can cause assembler errors on some toolchains due to the lack of the proper BOOTCFLAGS. This adds the proper flags for the file. Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
* | | | | Merge branch 'i2c-for-linus' of git://jdelvare.pck.nerim.net/jdelvare-2.6Linus Torvalds2008-12-132-3/+3
|\ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * 'i2c-for-linus' of git://jdelvare.pck.nerim.net/jdelvare-2.6: i2c-highlander: Trivial endian casting fixes i2c-pmcmsp: Fix endianness misannotation
| * | | | | i2c-highlander: Trivial endian casting fixesHarvey Harrison2008-12-111-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Fixes sparse warnings: drivers/i2c/busses/i2c-highlander.c:95:26: warning: incorrect type in argument 1 (different base types) drivers/i2c/busses/i2c-highlander.c:95:26: expected restricted __be16 const [usertype] *p drivers/i2c/busses/i2c-highlander.c:95:26: got unsigned short [usertype] *<noident> drivers/i2c/busses/i2c-highlander.c:106:15: warning: incorrect type in assignment (different base types) drivers/i2c/busses/i2c-highlander.c:106:15: expected unsigned short [unsigned] [short] [usertype] <noident> drivers/i2c/busses/i2c-highlander.c:106:15: got restricted __be16 Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Cc: Ben Dooks <ben-linux@fluff.org> Acked-by: Paul Mundt <lethal@linux-sh.org> Signed-off-by: Jean Delvare <khali@linux-fr.org>
| * | | | | i2c-pmcmsp: Fix endianness misannotationHarvey Harrison2008-12-111-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | tmp is used as host-endian and is loaded from a be64, fix the cast and the endian accessor used. Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Cc: Ben Dooks <ben-linux@fluff.org> Signed-off-by: Jean Delvare <khali@linux-fr.org>
* | | | | | Merge branch 'for-linus' of git://git.kernel.dk/linux-2.6-blockLinus Torvalds2008-12-132-10/+18
|\ \ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | * 'for-linus' of git://git.kernel.dk/linux-2.6-block: Commands needing to be retried require a complete re-initialization.
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-13 05:24:13 +0000