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2008-07-08sysfs: add /sys/firmware/memmapBernhard Walle
This patch adds /sys/firmware/memmap interface that represents the BIOS (or Firmware) provided memory map. The tree looks like: /sys/firmware/memmap/0/start (hex number) end (hex number) type (string) ... /1/start end type With the following shell snippet one can print the memory map in the same form the kernel prints itself when booting on x86 (the E820 map). --------- 8< -------------------------- #!/bin/sh cd /sys/firmware/memmap for dir in * ; do start=$(cat $dir/start) end=$(cat $dir/end) type=$(cat $dir/type) printf "%016x-%016x (%s)\n" $start $[ $end +1] "$type" done --------- >8 -------------------------- That patch only provides the needed interface: 1. The sysfs interface. 2. The structure and enumeration definition. 3. The function firmware_map_add() and firmware_map_add_early() that should be called from architecture code (E820/EFI, for example) to add the contents to the interface. If the kernel is compiled without CONFIG_FIRMWARE_MEMMAP, the interface does nothing without cluttering the architecture-specific code with #ifdef's. The purpose of the new interface is kexec: While /proc/iomem represents the *used* memory map (e.g. modified via kernel parameters like 'memmap' and 'mem'), the /sys/firmware/memmap tree represents the unmodified memory map provided via the firmware. So kexec can: - use the original memory map for rebooting, - use the /proc/iomem for setting up the ELF core headers for kdump case that should only represent the memory of the system. The patch has been tested on i386 and x86_64. Signed-off-by: Bernhard Walle <bwalle@suse.de> Acked-by: Greg KH <gregkh@suse.de> Acked-by: Vivek Goyal <vgoyal@redhat.com> Cc: kexec@lists.infradead.org Cc: yhlu.kernel@gmail.com Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-08x86: check command line when CONFIG_X86_MPPARSE is not set, v2Yinghai Lu
if acpi=off, acpi=noirq and pci=noacpi, we need to disable apic. Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: "Maciej W. Rozycki" <macro@linux-mips.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-08RFC x86: try to remove arch_get_ram_rangeYinghai Lu
want to remove arch_get_ram_range, and use early_node_map instead. Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-08build: add __page_aligned_data and __page_aligned_bssJeremy Fitzhardinge
Making a variable page-aligned by using __attribute__((section(".data.page_aligned"))) is fragile because if sizeof(variable) is not also a multiple of page size, it leaves variables in the remainder of the section unaligned. This patch introduces two new qualifiers, __page_aligned_data and __page_aligned_bss to set the section *and* the alignment of variables. This makes page-aligned variables more robust because the linker will make sure they're aligned properly. Unfortunately it requires *all* page-aligned data to use these macros... Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-08Merge branch 'x86/numa' into x86/develIngo Molnar
Conflicts: arch/x86/Kconfig arch/x86/kernel/e820.c arch/x86/kernel/efi_64.c arch/x86/kernel/mpparse.c arch/x86/kernel/setup.c arch/x86/kernel/setup_32.c arch/x86/mm/init_64.c include/asm-x86/proto.h Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-08x86: remove static boot_cpu_pda array v2Mike Travis
* Remove the boot_cpu_pda array and pointer table from the data section. Allocate the pointer table and array during init. do_boot_cpu() will reallocate the pda in node local memory and if the cpu is being brought up before the bootmem array is released (after_bootmem = 0), then it will free the initial pda. This will happen for all cpus present at system startup. This removes 512k + 32k bytes from the data section. For inclusion into sched-devel/latest tree. Based on: git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6.git + sched-devel/latest .../mingo/linux-2.6-sched-devel.git Signed-off-by: Mike Travis <travis@sgi.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-07-08Merge branch 'x86/mpparse' into x86/develIngo Molnar
Conflicts: arch/x86/Kconfig arch/x86/kernel/io_apic_32.c arch/x86/kernel/setup_64.c arch/x86/mm/init_32.c Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-08x86, mm: use add_highpages_with_active_regions() for high pages init v2Yinghai Lu
use early_node_map to init high pages, so we can remove page_is_ram() and page_is_reserved_early() in the big loop with add_one_highpage also remove page_is_reserved_early(), it is not needed anymore. v2: fix the build of other platforms Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-08x86: replace shrink_active_range() with remove_active_range()Yinghai Lu
in case we have kva before ramdisk on a node, we still need to use those ranges. v2: reserve_early kva ram area, in case there are holes in highmem, to avoid those area could be treat as free high pages. Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-08x86: clean up reserve_bootmem_generic() and port it to 32-bitYinghai Lu
1. add reserve_bootmem_generic for 32bit 2. change len to unsigned long 3. make early_res_to_bootmem to use it Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-08Merge branch 'linus' into tmp.x86.mpparse.newIngo Molnar
2008-07-08Merge branch 'x86/irq' into x86/develIngo Molnar
Conflicts: arch/x86/kernel/i8259.c arch/x86/kernel/irqinit_64.c Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-08Merge branches 'x86/mmio', 'x86/delay', 'x86/idle', 'x86/oprofile', ↵Ingo Molnar
'x86/debug', 'x86/ptrace' and 'x86/amd-iommu' into x86/devel
2008-07-08Merge branches 'x86/numa-fixes', 'x86/apic', 'x86/apm', 'x86/bitops', ↵Ingo Molnar
'x86/build', 'x86/cleanups', 'x86/cpa', 'x86/cpu', 'x86/defconfig', 'x86/gart', 'x86/i8259', 'x86/intel', 'x86/irqstats', 'x86/kconfig', 'x86/ldt', 'x86/mce', 'x86/memtest', 'x86/pat', 'x86/ptemask', 'x86/resumetrace', 'x86/threadinfo', 'x86/timers', 'x86/vdso' and 'x86/xen' into x86/devel
2008-07-05Move _RET_IP_ and _THIS_IP_ to include/linux/kernel.hEduard - Gabriel Munteanu
These two macros are useful beyond lock debugging. Moved definitions from include/linux/debug_locks.h to include/linux/kernel.h, so code that needs them does not have to include the former, which would have been a less intuitive choice of a header. Signed-off-by: Eduard - Gabriel Munteanu <eduard.munteanu@linux360.ro> Acked-by: Pekka Enberg <penberg@cs.helsinki.fi> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-07-04cpumask: introduce new APIsStephen Rothwell
In linux-next there is a commit ("x86: Add performance variants of cpumask operators") which, as part of the 4096 cpu support work adds some new APIs for dealing with cpu masks. Add trivial versions of these now so that subsystems can update in a timely manner and avoid conflicts in linux-next and the next merge window. Cc: Mike Travis <travis@sgi.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@elte.hu> Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-07-04olpc: sdhci: add quirk for the Marvell CaFe's vdd/powerup issueAndres Salomon
This has been sitting around unloved for way too long.. The Marvell CaFe chip's SD implementation chokes during card insertion if one attempts to set the voltage and power up in the same SDHCI_POWER_CONTROL register write. This adds a quirk that does that particular dance in two steps. It also adds an entry to pci_ids.h for the CaFe chip's SD device. Signed-off-by: Andres Salomon <dilinger@debian.org> Cc: Pierre Ossman <drzeus-list@drzeus.cx> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-07-04security: filesystem capabilities: fix fragile setuid fixup codeAndrew G. Morgan
This commit includes a bugfix for the fragile setuid fixup code in the case that filesystem capabilities are supported (in access()). The effect of this fix is gated on filesystem capability support because changing securebits is only supported when filesystem capabilities support is configured.) [akpm@linux-foundation.org: coding-style fixes] Signed-off-by: Andrew G. Morgan <morgan@kernel.org> Acked-by: Serge Hallyn <serue@us.ibm.com> Acked-by: David Howells <dhowells@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-07-04Introduce rculist.hStephen Rothwell
In linux-next there is a commit ("rcu: split list.h and move rcu-protected lists into rculist.h") that moved the rcu related list iterators from list.h to rculist.h. Add a trivial version of the file now so that various subsystem trees can start using it now for -next changes and so reduce the build errors caused by adding uses of the moved functions. Cc: Franck Bui-Huu <fbuihuu@gmail.com> Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Cc: Josh Triplett <josh@kernel.org> Acked-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-07-04Miguel Ojeda has movedMiguel Ojeda
Signed-off-by: Miguel Ojeda <miguel.ojeda.sandonis@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-07-04firmware: fix the request_firmware() dummyJames Bottomley
> the build (.config attached) failed, make ends with : > ... > UPD include/linux/compile.h > CC init/version.o > LD init/built-in.o > LD vmlinux > drivers/built-in.o: In function `sas_request_addr': > (.text+0x33bab): undefined reference to `request_firmware' > drivers/built-in.o: In function `sas_request_addr': > (.text+0x33c3f): undefined reference to `release_firmware' > make: *** [vmlinux] Error 1 There's a slight fault in the stub logic. It fails for FW_LOADER=m and the user =y. This should fix it. This patch fixes the following 2.6.26-rc regression: http://bugzilla.kernel.org/show_bug.cgi?id=10730 Reviewed-by: Toralf Foerster <toralf.foerster@gmx.de> Signed-off-by: Adrian Bunk <bunk@kernel.org> 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>
2008-07-04Christoph has movedChristoph Lameter
Remove all clameter@sgi.com addresses from the kernel tree since they will become invalid on June 27th. Change my maintainer email address for the slab allocators to cl@linux-foundation.org (which will be the new email address for the future). Signed-off-by: Christoph Lameter <clameter@sgi.com> Signed-off-by: Christoph Lameter <cl@linux-foundation.org> Cc: Pekka Enberg <penberg@cs.helsinki.fi> Cc: Stephen Rothwell <sfr@canb.auug.org.au> Cc: Matt Mackall <mpm@selenic.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-07-04Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/penberg/slab-2.6 * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/penberg/slab-2.6: slub: Do not use 192 byte sized cache if minimum alignment is 128 byte
2008-07-03slub: Do not use 192 byte sized cache if minimum alignment is 128 byteChristoph Lameter
The 192 byte cache is not necessary if we have a basic alignment of 128 byte. If it would be used then the 192 would be aligned to the next 128 byte boundary which would result in another 256 byte cache. Two 256 kmalloc caches cause sysfs to complain about a duplicate entry. MIPS needs 128 byte aligned kmalloc caches and spits out warnings on boot without this patch. Signed-off-by: Christoph Lameter <cl@linux-foundation.org> Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
2008-07-02Merge branch 'for-2.6.26' of git://git.kernel.dk/linux-2.6-blockLinus Torvalds
* 'for-2.6.26' of git://git.kernel.dk/linux-2.6-block: Properly notify block layer of sync writes block: Fix the starving writes bug in the anticipatory IO scheduler
2008-07-02Merge branch 'i2c-for-linus' of git://jdelvare.pck.nerim.net/jdelvare-2.6Linus Torvalds
* 'i2c-for-linus' of git://jdelvare.pck.nerim.net/jdelvare-2.6: i2c: Fix bad hint about irqs in i2c.h i2c: Documentation: fix device matching description
2008-07-02Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6Linus Torvalds
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: (55 commits) net: fib_rules: fix error code for unsupported families netdevice: Fix wrong string handle in kernel command line parsing net: Tyop of sk_filter() comment netlink: Unneeded local variable net-sched: fix filter destruction in atm/hfsc qdisc destruction net-sched: change tcf_destroy_chain() to clear start of filter list ipv4: fix sysctl documentation of time related values mac80211: don't accept WEP keys other than WEP40 and WEP104 hostap: fix sparse warnings hostap: don't report useless WDS frames by default textsearch: fix Boyer-Moore text search bug netfilter: nf_conntrack_tcp: fixing to check the lower bound of valid ACK ipv6 route: Convert rt6_device_match() to use RT6_LOOKUP_F_xxx flags. netlabel: Fix a problem when dumping the default IPv6 static labels net/inet_lro: remove setting skb->ip_summed when not LRO-able inet fragments: fix race between inet_frag_find and inet_frag_secret_rebuild CONNECTOR: add a proc entry to list connectors netlink: Fix some doc comments in net/netlink/attr.c tcp: /proc/net/tcp rto,ato values not scaled properly (v2) include/linux/netdevice.h: don't export MAX_HEADER to userspace ...
2008-07-01i2c: Fix bad hint about irqs in i2c.hWolfram Sang
i2c.h mentions -1 as a not-issued irq. This false hint was taken by of_i2c and caused crashes. Don't give any advice as 'no irq' is not consistent across all architectures yet and it is not needed internally by the i2c-core. Signed-off-by: Wolfram Sang <w.sang@pengutronix.de> Signed-off-by: Jean Delvare <khali@linux-fr.org>
2008-07-01Properly notify block layer of sync writesJens Axboe
fsync_buffers_list() and sync_dirty_buffer() both issue async writes and then immediately wait on them. Conceptually, that makes them sync writes and we should treat them as such so that the IO schedulers can handle them appropriately. This patch fixes a write starvation issue that Lin Ming reported, where xx is stuck for more than 2 minutes because of a large number of synchronous IO in the system: INFO: task kjournald:20558 blocked for more than 120 seconds. "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. kjournald D ffff810010820978 6712 20558 2 ffff81022ddb1d10 0000000000000046 ffff81022e7baa10 ffffffff803ba6f2 ffff81022ecd0000 ffff8101e6dc9160 ffff81022ecd0348 000000008048b6cb 0000000000000086 ffff81022c4e8d30 0000000000000000 ffffffff80247537 Call Trace: [<ffffffff803ba6f2>] kobject_get+0x12/0x17 [<ffffffff80247537>] getnstimeofday+0x2f/0x83 [<ffffffff8029c1ac>] sync_buffer+0x0/0x3f [<ffffffff8066d195>] io_schedule+0x5d/0x9f [<ffffffff8029c1e7>] sync_buffer+0x3b/0x3f [<ffffffff8066d3f0>] __wait_on_bit+0x40/0x6f [<ffffffff8029c1ac>] sync_buffer+0x0/0x3f [<ffffffff8066d48b>] out_of_line_wait_on_bit+0x6c/0x78 [<ffffffff80243909>] wake_bit_function+0x0/0x23 [<ffffffff8029e3ad>] sync_dirty_buffer+0x98/0xcb [<ffffffff8030056b>] journal_commit_transaction+0x97d/0xcb6 [<ffffffff8023a676>] lock_timer_base+0x26/0x4b [<ffffffff8030300a>] kjournald+0xc1/0x1fb [<ffffffff802438db>] autoremove_wake_function+0x0/0x2e [<ffffffff80302f49>] kjournald+0x0/0x1fb [<ffffffff802437bb>] kthread+0x47/0x74 [<ffffffff8022de51>] schedule_tail+0x28/0x5d [<ffffffff8020cac8>] child_rip+0xa/0x12 [<ffffffff80243774>] kthread+0x0/0x74 [<ffffffff8020cabe>] child_rip+0x0/0x12 Lin Ming confirms that this patch fixes the issue. I've run tests with it for the past week and no ill effects have been observed, so I'm proposing it for inclusion into 2.6.26. Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2008-06-30Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input: Input: fix locking in force-feedback core Input: add KEY_MEDIA_REPEAT definition
2008-06-30Input: add KEY_MEDIA_REPEAT definitionBastien Nocera
This patch adds the Repeat key to the input layer. The usage in the HUT is 0xBC (listed under "15.7 Transport Controls"). Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2008-06-29Merge branch 'release' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6 * 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6: dock: bay: Don't call acpi_walk_namespace() when ACPI is disabled. ACPI: don't walk tables if ACPI was disabled thermal: Create CONFIG_THERMAL_HWMON=n
2008-06-29Merge git://git.kernel.org/pub/scm/linux/kernel/git/sam/kbuild-fixesLinus Torvalds
* git://git.kernel.org/pub/scm/linux/kernel/git/sam/kbuild-fixes: kbuild: fix a.out.h export to userspace with O= build.
2008-06-29Merge branch 'audit.b52' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/viro/audit-current * 'audit.b52' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/audit-current: [PATCH] remove useless argument type in audit_filter_user() [PATCH] audit: fix kernel-doc parameter notation [PATCH] kernel/audit.c: nlh->nlmsg_type is gotten more than once
2008-06-29Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6 * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6: [patch 2/3] vfs: dcache cleanups [patch 1/3] vfs: dcache sparse fixes [patch 3/3] vfs: make d_path() consistent across mount operations [patch 4/4] flock: remove unused fields from file_lock_operations [patch 3/4] vfs: fix ERR_PTR abuse in generic_readlink [patch 2/4] fs: make struct file arg to d_path const [patch 1/4] vfs: path_{get,put}() cleanups [patch for 2.6.26 4/4] vfs: utimensat(): fix write access check for futimens() [patch for 2.6.26 3/4] vfs: utimensat(): fix error checking for {UTIME_NOW,UTIME_OMIT} case [patch for 2.6.26 1/4] vfs: utimensat(): ignore tv_sec if tv_nsec == UTIME_OMIT or UTIME_NOW [patch for 2.6.26 2/4] vfs: utimensat(): be consistent with utime() for immutable and append-only files [PATCH] fix cgroup-inflicted breakage in block_dev.c
2008-06-27net/inet_lro: remove setting skb->ip_summed when not LRO-ableEli Cohen
When an SKB cannot be chained to a session, the current code attempts to "restore" its ip_summed field from lro_mgr->ip_summed. However, lro_mgr->ip_summed does not hold the original value; in fact, we'd better not touch skb->ip_summed since it is not modified by the code in the path leading to a failure to chain it. Also use a cleaer comment to the describe the ip_summed field of struct net_lro_mgr. Issue raised by Or Gerlitz <ogerlitz@voltaire.com> Signed-off-by: Eli Cohen <eli@mellanox.co.il> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-06-27include/linux/netdevice.h: don't export MAX_HEADER to userspaceAdrian Bunk
Due to the CONFIG_'s the value is anyway not correct in userspace. Signed-off-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-06-27kbuild: fix a.out.h export to userspace with O= build.David Woodhouse
We need to check for existence of the a.out.h header in the source tree, not the object tree, if we want it to get the right answer with O=. Signed-off-by: David Woodhouse <david.woodhouse@intel.com> Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2008-06-25thermal: Create CONFIG_THERMAL_HWMON=nRene Herman
A bug in libsensors <= 2.10.6 is exposed when this new hwmon I/F is enabled. Create CONFIG_THERMAL_HWMON=n until some time after libsensors 2.10.7 ships so those users can run the latest kernel. libsensors 3.x is already fixed -- those users can use CONFIG_THERMAL_HWMON=y now. Signed-off-by: Rene Herman <rene.herman@gmail.com> Acked-by: Mark M. Hoffman <mhoffman@lightlink.com> Signed-off-by: Len Brown <len.brown@intel.com>
2008-06-25Merge branch 'linus' into x86/irqIngo Molnar
2008-06-25Merge branch 'linus' into x86/delayIngo Molnar
Conflicts: arch/x86/kernel/tsc_32.c Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-06-25Merge commit 'v2.6.26-rc8' into x86/xenIngo Molnar
Conflicts: arch/x86/xen/enlighten.c arch/x86/xen/mmu.c Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-06-24[PATCH] remove useless argument type in audit_filter_user()Peng Haitao
The second argument "type" is not used in audit_filter_user(), so I think that type can be removed. If I'm wrong, please tell me. Signed-off-by: Peng Haitao <penght@cn.fujitsu.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2008-06-24x86: use cpu_khz for loops_per_jiffy calculation, cleanupAlok Kataria
As suggested by Ingo, remove all references to tsc from init/calibrate.c TSC is x86 specific, and using tsc in variable names in a generic file should be avoided. lpj_tsc is now called lpj_fine, since it is related to fine tuning of lpj value. Also tsc_rate_* is called timer_rate_* Signed-off-by: Alok N Kataria <akataria@vmware.com> Cc: Arjan van de Ven <arjan@infradead.org> Cc: Daniel Hecht <dhecht@vmware.com> Cc: Tim Mann <mann@vmware.com> Cc: Zach Amsden <zach@vmware.com> Cc: Sahil Rihan <srihan@vmware.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-06-24KVM: close timer injection race window in __vcpu_runMarcelo Tosatti
If a timer fires after kvm_inject_pending_timer_irqs() but before local_irq_disable() the code will enter guest mode and only inject such timer interrupt the next time an unrelated event causes an exit. It would be simpler if the timer->pending irq conversion could be done with IRQ's disabled, so that the above problem cannot happen. For now introduce a new vcpu requests bit to cancel guest entry. Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com> Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-06-23x86: use cpu_khz for loops_per_jiffy calculationAlok Kataria
On the x86 platform we can use the value of tsc_khz computed during tsc calibration to calculate the loops_per_jiffy value. Its very important to keep the error in lpj values to minimum as any error in that may result in kernel panic in check_timer. In virtualization environment, On a highly overloaded host the guest delay calibration may sometimes result in errors beyond the ~50% that timer_irq_works can handle, resulting in the guest panicking. Does some formating changes to lpj_setup code to now have a single printk to print the bogomips value. We do this only for the boot processor because the AP's can have different base frequencies or the BIOS might boot a AP at a different frequency. Signed-off-by: Alok N Kataria <akataria@vmware.com> Cc: Arjan van de Ven <arjan@infradead.org> Cc: Daniel Hecht <dhecht@vmware.com> Cc: Tim Mann <mann@vmware.com> Cc: Zach Amsden <zach@vmware.com> Cc: Sahil Rihan <srihan@vmware.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-06-23tty_driver: Update required method documentationAlan Cox
Some of the requirement rules are now more relaxed. Also correct a contradiction in the previous update Signed-off-by: Alan Cox <alan@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-06-23[patch 4/4] flock: remove unused fields from file_lock_operationsDenis V. Lunev
fl_insert and fl_remove are not used right now in the kernel. Remove them. Signed-off-by: Denis V. Lunev <den@openvz.org> Cc: Matthew Wilcox <matthew@wil.cx> Cc: Alexander Viro <viro@zeniv.linux.org.uk> Cc: "J. Bruce Fields" <bfields@fieldses.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2008-06-23[patch 2/4] fs: make struct file arg to d_path constJan Engelhardt
Signed-off-by: Jan Engelhardt <jengelh@medozas.de> Cc: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2008-06-21Add return value to reserve_bootmem_node()Bernhard Walle
This patch changes the function reserve_bootmem_node() from void to int, returning -ENOMEM if the allocation fails. This fixes a build problem on x86 with CONFIG_KEXEC=y and CONFIG_NEED_MULTIPLE_NODES=y Signed-off-by: Bernhard Walle <bwalle@suse.de> Reported-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>