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2008-04-22ACPICA: Include file support for new ACPI tablesBob Moore1-1/+334
Implemented header file support for new ACPI tables - BERT, ERST, EINJ, HEST, IBFT, UEFI, WDAT. Disassembler support is forthcoming. Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de> Signed-off-by: Len Brown <len.brown@intel.com>
2008-04-22ACPICA: Update version to 20071219Bob Moore1-1/+1
Update version to 20071219. Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de> Signed-off-by: Len Brown <len.brown@intel.com>
2008-04-22ACPICA: Implemented full argument resolution support for the BankValue ↵Lin Ming1-0/+7
argument to BankField Previously, only constants were supported, now any TermArg may be used. http://www.acpica.org/bugzilla/show_bug.cgi?id=387 http://www.acpica.org/bugzilla/show_bug.cgi?id=393 Signed-off-by: Lin Ming <ming.m.lin@intel.com> Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de> Signed-off-by: Len Brown <len.brown@intel.com>
2008-04-22ACPICA: Implemented full support for deferred execution for the TermArg ↵Lin Ming2-2/+4
string arguments for DataTableRegion This enables forward references and full operand resolution for the three string arguments. Similar to OperationRegion deferred argument execution.) http://www.acpica.org/bugzilla/show_bug.cgi?id=430 Signed-off-by: Lin Ming <ming.m.lin@intel.com> Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de> Signed-off-by: Len Brown <len.brown@intel.com>
2008-04-22ACPICA: Update version to 20071114Bob Moore1-1/+1
Update version to 20071114. Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de> Signed-off-by: Len Brown <len.brown@intel.com>
2008-04-22ACPICA: Cosmetic changes only, no functional changesBob Moore3-5/+15
Lint changes, fix compiler warnings, etc. Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de> Signed-off-by: Len Brown <len.brown@intel.com>
2008-04-22ACPICA: Update version to 20071019Bob Moore1-1/+1
Update version to 20071019. Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de> Signed-off-by: Len Brown <len.brown@intel.com>
2008-04-22ACPICA: Fix for Increment/Decrement operator, incorrect type changeLin Ming1-2/+2
Fixed a problem with the Increment and Decrement operators where the type of the target object could be unexpectedly and incorrectly changed. http://www.acpica.org/bugzilla/show_bug.cgi?id=353 Signed-off-by: Lin Ming <ming.m.lin@intel.com> Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de> Signed-off-by: Len Brown <len.brown@intel.com>
2008-04-22ACPICA: Fix for Load/LoadTable to specify load locationBob Moore1-1/+2
Fixed a problem with the Load and LoadTable operators where the table location within the namespace was ignored. Instead, the table was always loaded into the root or current scope. Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de> Signed-off-by: Len Brown <len.brown@intel.com>
2008-04-22ACPICA: update version number to 20070919Bob Moore1-1/+1
Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de> Signed-off-by: Len Brown <len.brown@intel.com>
2008-04-22ACPICA: New interfaces for table event handlersLin Ming4-2/+20
Designed and implemented new external interfaces to install and remove handlers for ACPI table-related events. Current events that are defined are LOAD and UNLOAD. These interfaces allow the host to track ACPI tables as they are dynamically loaded and unloaded. See AcpiInstallTableHandler and AcpiRemoveTableHandler. Signed-off-by: Lin Ming <ming.m.lin@intel.com> Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de> Signed-off-by: Len Brown <len.brown@intel.com>
2008-04-22ACPICA: Add minimal disassembly support for the SLIC tableBob Moore2-0/+2
SLIC - Software Licensing Description Table. Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de> Signed-off-by: Len Brown <len.brown@intel.com>
2008-04-22ACPICA: Update version to 20070508Bob Moore1-1/+1
Update version to 20070508. Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de> Signed-off-by: Len Brown <len.brown@intel.com>
2008-04-22ACPICA: Update version to 20070320Bob Moore1-1/+1
pdate version to 20070320 Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de> Signed-off-by: Len Brown <len.brown@intel.com>
2008-04-22ACPICA: Misc fixes for recent global lock code updateBob Moore1-1/+1
Fixes as a result of running full validation test suite. Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de> Signed-off-by: Len Brown <len.brown@intel.com>
2008-04-22ACPICA: Removed obsolete ACPI_NO_INTEGER64_SUPPORT defineBob Moore2-31/+4
Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de> Signed-off-by: Len Brown <len.brown@intel.com>
2008-04-22ACPICA: Fixed a couple compiler warnings for extra extern statementsBob Moore1-0/+6
Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de> Signed-off-by: Len Brown <len.brown@intel.com>
2008-04-22ACPICA: changed order of interpretation of operand objectsBob Moore3-0/+7
The interpreter now evaluates operands in the order that they appear (both in the AML and ASL), instead of in reverse order. This previously caused subtle incompatibilities with the MS interpreter as well as being non-intuitive. Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de> Signed-off-by: Len Brown <len.brown@intel.com>
2008-04-22ACPICA: Update for mutiple global lock acquisitions by same threadBob Moore3-11/+23
Allows AcpiAcquireGlobalLock external interface to be called multiple times by the same thread. Allows use of AML fields that require the global lock while the running AML is already holding the global lock. Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de> Signed-off-by: Len Brown <len.brown@intel.com>
2008-04-22ACPICA: Several fixes for internal method result stackBob Moore4-19/+18
fixes STACK_OVERFLOW exception on nested method calls. internal bugzilla 262 and 275. Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de> Signed-off-by: Len Brown <len.brown@intel.com>
2008-04-17Merge git://git.kernel.org/pub/scm/linux/kernel/git/bart/ide-2.6Linus Torvalds3-22/+4
* git://git.kernel.org/pub/scm/linux/kernel/git/bart/ide-2.6: it821x: do not describe noraid parameter with its value Pb1200/DBAu1200: fix bad IDE resource size Au1200: IDE driver build fix Au1200: kill IDE driver function prototypes avr32 mustn't select HAVE_IDE
2008-04-17Pb1200/DBAu1200: fix bad IDE resource sizeSergei Shtylyov2-4/+4
The header files for the Pb1200/DBAu1200 boards have wrong definition for the IDE interface's decoded range length -- it should be 512 bytes according to what the IDE driver does. In addition, the IDE platform device claims 1 byte too many for its memory resource -- fix the platform code and the IDE driver in accordance. Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com> Cc: Ralf Baechle <ralf@linux-mips.org> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-04-17Au1200: kill IDE driver function prototypesSergei Shtylyov1-18/+0
Fix these warnings emitted when compiling drivers/ide/mips/au1xxx-ide.c: include/asm/mach-au1x00/au1xxx_ide.h:137: warning: 'auide_tune_drive' declared `static' but never defined include/asm/mach-au1x00/au1xxx_ide.h:138: warning: 'auide_tune_chipset' declared `static' but never defined by wiping out the whole "function prototyping" section from the header file <asm-mips/mach-au1x00/au1xxx_ide.h> as it mostly declared functions that are already dead in the IDE driver; move the only useful prototype into the driver. Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com> Cc: Ralf Baechle <ralf@linux-mips.org> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-04-16Merge branch 'for-linus' of git://git.kernel.dk/linux-2.6-blockLinus Torvalds1-1/+3
* 'for-linus' of git://git.kernel.dk/linux-2.6-block: block: update git url for blktrace io context: increment task attachment count in ioc_task_link()
2008-04-16Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6Linus Torvalds1-0/+4
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: [TCP]: Add return value indication to tcp_prune_ofo_queue(). PS3: gelic: fix the oops on the broken IE returned from the hypervisor b43legacy: fix DMA mapping leakage mac80211: remove message on receiving unexpected unencrypted frames Update rt2x00 MAINTAINERS entry Add rfkill to MAINTAINERS file rfkill: Fix device type check when toggling states b43legacy: Fix usage of struct device used for DMAing ssb: Fix usage of struct device used for DMAing MAINTAINERS: move to generic repository for iwlwifi b43legacy: fix initvals loading on bcm4303 rtl8187: Add missing priv->vif assignments netconsole: only set CON_PRINTBUFFER if the user specifies a netconsole [CAN]: Update documentation of struct sockaddr_can MAINTAINERS: isdn4linux@listserv.isdn4linux.de is subscribers-only [TCP]: Fix never pruned tcp out-of-order queue. [NET_SCHED] sch_api: fix qdisc_tree_decrease_qlen() loop
2008-04-16acpi thermal trip points increased to 12Krzysztof Helt1-1/+1
The THERMAL_MAX_TRIPS value is set to 10. It is too few for the Compaq AP550 machine which has 12 trip points. Signed-off-by: Krzysztof Helt <krzysztof.h1@wp.pl> Cc: Len Brown <lenb@kernel.org> Cc: Zhang Rui <rui.zhang@intel.com> Cc: "Rafael J. Wysocki" <rjw@sisk.pl> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-04-16spi: spi_s3c24xx must initialize num_chipselectBen Dooks1-0/+1
The SPI core now expects num_chipselect to be set correctly as due to added checks on the chip being selected before an transfer is allowed. This patch adds a num_cs field to the platform data which needs to be set correctly before adding the SPI platform device. Signed-off-by: Ben Dooks <ben-linux@fluff.org> Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Cc: Russell King <rmk@arm.linux.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-04-16vfs: fix possible deadlock in ext2, ext3, ext4 when using xattrsJan Kara1-1/+1
mb_cache_entry_alloc() was allocating cache entries with GFP_KERNEL. But filesystems are calling this function while holding xattr_sem so possible recursion into the fs violates locking ordering of xattr_sem and transaction start / i_mutex for ext2-4. Change mb_cache_entry_alloc() so that filesystems can specify desired gfp mask and use GFP_NOFS from all of them. Signed-off-by: Jan Kara <jack@suse.cz> Reported-by: Dave Jones <davej@redhat.com> Cc: <linux-ext4@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-04-16uml: compile error fixWANG Cong1-0/+1
This patch fixes this error: In file included from /home/wangcong/projects/linux-2.6/arch/um/kernel/smp.c:9: include2/asm/tlb.h: In function `tlb_remove_page': include2/asm/tlb.h:101: error: implicit declaration of function `page_cache_release' And since including <linux/pagemap.h> in <linux/swap.h> will break sparc, we add this #include in uml's own header. Acked-by: Jeff Dike <jdike@addtoit.com> Signed-off-by: WANG Cong <wangcong@zeuux.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-04-15ssb: Fix usage of struct device used for DMAingMichael Buesch1-0/+4
This fixes DMA on architectures where DMA is nontrivial, like PPC64. We must use the host-device's (PCI) struct device for any DMA operation instead of the SSB device. For this we add a new struct device pointer to the SSB device structure that will always point to the right device for DMAing. Without this patch b43 and b44 drivers won't work on complex-DMA architectures, that for example need dev->archdata for DMA operations. Signed-off-by: Michael Buesch <mb@bu3sch.de> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2008-04-15io context: increment task attachment count in ioc_task_link()Jens Axboe1-1/+3
Thanks to Nikanth Karthikesan <knikanth@suse.de> for reporting this. Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2008-04-14Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6Linus Torvalds6-43/+5
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: (31 commits) [BRIDGE]: Fix crash in __ip_route_output_key with bridge netfilter [NETFILTER]: ipt_CLUSTERIP: fix race between clusterip_config_find_get and _entry_put [IPV6] ADDRCONF: Don't generate temporary address for ip6-ip6 interface. [IPV6] ADDRCONF: Ensure disabling multicast RS even if privacy extensions are disabled. [IPV6]: Use appropriate sock tclass setting for routing lookup. [IPV6]: IPv6 extension header structures need to be packed. [IPV6]: Fix ipv6 address fetching in raw6_icmp_error(). [NET]: Return more appropriate error from eth_validate_addr(). [ISDN]: Do not validate ISDN net device address prior to interface-up [NET]: Fix kernel-doc for skb_segment [SOCK] sk_stamp: should be initialized to ktime_set(-1L, 0) net: check for underlength tap writes net: make struct tun_struct private to tun.c [SCTP]: IPv4 vs IPv6 addresses mess in sctp_inet[6]addr_event. [SCTP]: Fix compiler warning about const qualifiers [SCTP]: Fix protocol violation when receiving an error lenght INIT-ACK [SCTP]: Add check for hmac_algo parameter in sctp_verify_param() [NET_SCHED] cls_u32: refcounting fix for u32_delete() [DCCP]: Fix skb->cb conflicts with IP [AX25]: Potential ax25_uid_assoc-s leaks on module unload. ...
2008-04-14[IPV6]: Use appropriate sock tclass setting for routing lookup.YOSHIFUJI Hideaki1-1/+1
Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-04-14[IPV6]: IPv6 extension header structures need to be packed.YOSHIFUJI Hideaki1-1/+1
struct ipv6_opt_hdr is the common structure for IPv6 extension headers, and it is common to increment the pointer to get the real content. On the other hand, since the structure consists only of 1-byte next-header field and 1-byte length field, size of that structure depends on architecture; 2 or 4. Add "packed" attribute to get 2. Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-04-13net: make struct tun_struct private to tun.cRusty Russell2-40/+1
There's no reason for this to be in the header, and it just hurts recompile time. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Acked-by: Max Krasnyanskiy <maxk@qualcomm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-04-13[SCTP]: Fix compiler warning about const qualifiersVlad Yasevich1-1/+1
Fix 3 warnings about discarding const qualifiers: net/sctp/ulpevent.c:862: warning: passing argument 1 of 'sctp_event2skb' discards qualifiers from pointer target type net/sctp/sm_statefuns.c:4393: warning: passing argument 1 of 'SCTP_ASOC' discards qualifiers from pointer target type net/sctp/socket.c:5874: warning: passing argument 1 of 'cmsg_nxthdr' discards qualifiers from pointer target type Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-04-13[SCTP]: Fix protocol violation when receiving an error lenght INIT-ACKGui Jianfeng1-0/+1
When receiving an error length INIT-ACK during COOKIE-WAIT, a 0-vtag ABORT will be responsed. This action violates the protocol apparently. This patch achieves the following things. 1 If the INIT-ACK contains all the fixed parameters, use init-tag recorded from INIT-ACK as vtag. 2 If the INIT-ACK doesn't contain all the fixed parameters, just reflect its vtag. Signed-off-by: Gui Jianfeng <guijianfeng@cn.fujitsu.com> Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-04-12Merge branch 'docs' of git://git.lwn.net/linux-2.6Linus Torvalds1-0/+3
* 'docs' of git://git.lwn.net/linux-2.6: Add additional examples in Documentation/spinlocks.txt Move sched-rt-group.txt to scheduler/ Documentation: move rpc-cache.txt to filesystems/ Documentation: move nfsroot.txt to filesystems/ Spell out behavior of atomic_dec_and_lock() in kerneldoc Fix a typo in highres.txt Fixes to the seq_file document Fill out information on patch tags in SubmittingPatches Add the seq_file documentation
2008-04-11Spell out behavior of atomic_dec_and_lock() in kerneldocJ. Bruce Fields1-0/+3
A little more detail here wouldn't hurt. Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2008-04-11Fix "$(AS) -traditional" compile breakage caused by asmlinkage_protectHeiko Carstens1-0/+3
git commit 54a015104136974262afa4b8ddd943ea70dec8a2 ("asmlinkage_protect replaces prevent_tail_call") causes this build failure on s390: AS arch/s390/kernel/entry64.o In file included from arch/s390/kernel/entry64.S:14: include/linux/linkage.h:34: error: syntax error in macro parameter list make[1]: *** [arch/s390/kernel/entry64.o] Error 1 make: *** [arch/s390/kernel] Error 2 and some other architectures. The reason is that some architectures add the "-traditional" flag to the invocation of $(AS), which disables variadic macro argument support. So just surround the new define with an #ifndef __ASSEMBLY__ to prevent any side effects on asm code. Cc: Roland McGrath <roland@redhat.com> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-04-11Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6Linus Torvalds1-0/+2
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: [NETNS][IPV6] tcp - assign the netns for timewait sockets [IPV4]: Fix byte value boundary check in do_ip_getsockopt(). BNX2X: Correct bringing chip out of reset [NETFILTER]: nf_nat: autoload IPv4 connection tracking [NETFILTER]: xt_hashlimit: fix mask calculation [XFRM]: xfrm_user: fix selector family initialization rt61pci: rt61pci_beacon_update do not free skb twice ssb-mipscore: Fix interrupt vectors ssb-pcicore: Fix IRQ TPS flag handling mac80211: use short_preamble mode from capability if ERP IE not present [NET]: Undo code bloat in hot paths due to print_mac(). [TCP]: Don't allow FRTO to take place while MTU is being probed [TCP]: tcp_simple_retransmit can cause S+L [TCP]: Fix NewReno's fast rexmit/recovery problems with GSOed skb [TCP]: Restore 2.6.24 mark_head_lost behavior for newreno/fack nl80211: fix STA AID bug b43legacy: fix bcm4303 crash iwlwifi: fix n-band association problem ipw2200: set MAC address on radiotap interface libertas: fix mode initialization problem
2008-04-11pnp: increase number of devices supported per protocolBjorn Helgaas1-1/+1
Increase the PNP "number of devices" limit. We currently use an unsigned char, which limits us to 256 devices per protocol. This patch changes that to an unsigned int. Not all backends can take advantage of this: we limit ISAPNP to 10 devices in isapnp_cfg_begin(), and PNPBIOS is limited to 256 devices because the BIOS interfaces use a one-byte device node number. But there is no limit on the number of PNPACPI devices we may have. Large HP Integrity machines have more than 256, which causes the current "unsigned char number" to wrap around. This causes errors like this: pnp: PnP ACPI init kobject_add failed for 00:00 with -EEXIST, don't try to register things with the same name in the same directory. Call Trace: [<a000000100010720>] show_stack+0x40/0xa0 [<a0000001000107b0>] dump_stack+0x30/0x60 [<a0000001001dbdf0>] kobject_add+0x290/0x2c0 [<a0000001002bfd40>] device_add+0x160/0x860 [<a0000001002c0470>] device_register+0x30/0x60 [<a00000010026ba70>] __pnp_add_device+0x130/0x180 [<a00000010026bb70>] pnp_add_device+0xb0/0xe0 [<a0000001007f2730>] pnpacpi_add_device+0x510/0x5a0 [<a0000001007f2810>] pnpacpi_add_device_handler+0x50/0x80 This patch increases the limit to fix this PNPACPI problem. It should not have any adverse effect on ISAPNP or PNPBIOS because their limits are still enforced in the backends. Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-04-11Add commentary about the new "asmlinkage_protect()" macroLinus Torvalds2-0/+24
It's really a pretty ugly thing to need, and some day it will hopefully be obviated by teaching gcc about the magic calling conventions for the low-level system call code, but in the meantime we can at least add big honking comments about why we need these insane and strange macros. I took my comments from my version of the macro, but I ended up deciding to just pick Roland's version of the actual code instead (with his prettier syntax that uses vararg macros). Thus the previous two commits that actually implement it. Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-04-11asmlinkage_protect replaces prevent_tail_callRoland McGrath2-3/+25
The prevent_tail_call() macro works around the problem of the compiler clobbering argument words on the stack, which for asmlinkage functions is the caller's (user's) struct pt_regs. The tail/sibling-call optimization is not the only way that the compiler can decide to use stack argument words as scratch space, which we have to prevent. Other optimizations can do it too. Until we have new compiler support to make "asmlinkage" binding on the compiler's own use of the stack argument frame, we have work around all the manifestations of this issue that crop up. More cases seem to be prevented by also keeping the incoming argument variables live at the end of the function. This makes their original stack slots attractive places to leave those variables, so the compiler tends not clobber them for something else. It's still no guarantee, but it handles some observed cases that prevent_tail_call() did not. Signed-off-by: Roland McGrath <roland@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-04-11FRV: Don't make smp_{r, w, }mb() interpolate MEMBAR when CONFIG_SMP=n [try #2]David Howells1-6/+15
Don't make smp_{r,w,}mb() interpolate a MEMBAR instruction when CONFIG_SMP=n as SMP memory barries on UP systems should interpolate a compiler barrier only. Signed-off-by: David Howells <dhowells@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-04-11FRV: Add support for emulation of userspace atomic ops [try #2]David Howells1-0/+14
Use traps 120-126 to emulate atomic cmpxchg32, xchg32, and XOR-, OR-, AND-, SUB- and ADD-to-memory operations for userspace. Signed-off-by: David Howells <dhowells@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-04-11FRV: Move STACK_TOP_MAX up [try #2]David Howells1-1/+1
Move STACK_TOP_MAX up so that we don't try moving the stack above it as that causes setup_arg_pages() to malfunction. Signed-off-by: David Howells <dhowells@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-04-11FRV: Handle update_mmu_cache() being called when current->mm is NULL [try #2]David Howells1-5/+14
Handle update_mmu_cache() being called when current->mm is NULL. We cache static TLB mappings for the current page table in DAMPR4 and DAMPR5 on the theory that the next data lookup is likely to be in the same general region, and thus is likely to be mapped by the same page table. However, we can't get this information if we can't access the appropriate mm_struct. If current->mm is NULL, we just clear the cache in the knowledge that the TLB miss handlers will load it. Signed-off-by: David Howells <dhowells@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-04-08[TCP]: tcp_simple_retransmit can cause S+LIlpo Järvinen1-0/+2
This fixes Bugzilla #10384 tcp_simple_retransmit does L increment without any checking whatsoever for overflowing S+L when Reno is in use. The simplest scenario I can currently think of is rather complex in practice (there might be some more straightforward cases though). Ie., if mss is reduced during mtu probing, it may end up marking everything lost and if some duplicate ACKs arrived prior to that sacked_out will be non-zero as well, leading to S+L > packets_out, tcp_clean_rtx_queue on the next cumulative ACK or tcp_fastretrans_alert on the next duplicate ACK will fix the S counter. More straightforward (but questionable) solution would be to just call tcp_reset_reno_sack() in tcp_simple_retransmit but it would negatively impact the probe's retransmission, ie., the retransmissions would not occur if some duplicate ACKs had arrived. So I had to add reno sacked_out reseting to CA_Loss state when the first cumulative ACK arrives (this stale sacked_out might actually be the explanation for the reports of left_out overflows in kernel prior to 2.6.23 and S+L overflow reports of 2.6.24). However, this alone won't be enough to fix kernel before 2.6.24 because it is building on top of the commit 1b6d427bb7e ([TCP]: Reduce sacked_out with reno when purging write_queue) to keep the sacked_out from overflowing. Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@helsinki.fi> Reported-by: Alessandro Suardi <alessandro.suardi@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-04-08[MIPS] Handle aliases in vmalloc correctly.Ralf Baechle1-2/+16
flush_cache_vmap / flush_cache_vunmap were calling flush_cache_all which - having been deprecated - turned into a nop ... Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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