- 06 Jun, 2012 5 commits
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Peter Zijlstra authored
Often when we run into mis-shapen topologies the balance iteration fails to update the cpu power properly and we'll end up in /0 traps. Always initialize the cpu-power to a semi-sane value so that we can at least boot the machine, even if the load-balancer might not function correctly. Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/n/tip-3lbhyj25sr169ha7z3qht5na@git.kernel.orgSigned-off-by: Ingo Molnar <mingo@kernel.org>
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Peter Zijlstra authored
Weird topologies can lead to asymmetric domain setups. This needs further consideration since these setups are typically non-minimal too. For now, make it work by adding an extra mask selecting which CPUs are allowed to iterate up. The topology that triggered it is the one from David Rientjes: 10 20 20 30 20 10 20 20 20 20 10 20 30 20 20 10 resulting in boxes that wouldn't even boot. Reported-by: David Rientjes <rientjes@google.com> Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/n/tip-3p86l9cuaqnxz7uxsojmz5rm@git.kernel.orgSigned-off-by: Ingo Molnar <mingo@kernel.org>
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Peter Zijlstra authored
Roland Dreier reported spurious, hard to trigger lockdep warnings within the scheduler - without any real lockup. This bit gives us the right clue: > [89945.640512] [<ffffffff8103fa1a>] double_lock_balance+0x5a/0x90 > [89945.640568] [<ffffffff8104c546>] push_rt_task+0xc6/0x290 if you look at that code you'll find the double_lock_balance() in question is the one in find_lock_lowest_rq() [yay for inlining]. Now find_lock_lowest_rq() has a bug.. it fails to use double_unlock_balance() in one exit path, if this results in a retry in push_rt_task() we'll call double_lock_balance() again, at which point we'll run into said lockdep confusion. Reported-by: Roland Dreier <roland@kernel.org> Acked-by: Steven Rostedt <rostedt@goodmis.org> Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1337282386.4281.77.camel@twinsSigned-off-by: Ingo Molnar <mingo@kernel.org>
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Alex Shi authored
Commit cb83b629 ("sched/numa: Rewrite the CONFIG_NUMA sched domain support") removed the NODE sched domain and started checking if the node distance in SLIT table is farther than REMOTE_DISTANCE, if so, it will lose the load balance chance at exec/fork/wake_affine points. But actually, even the node distance is farther than REMOTE_DISTANCE. Modern CPUs also has QPI like connections, which ensures that memory access is not too slow between nodes. So the above change in behavior on NUMA machine causes a performance regression on various benchmarks: hackbench, tbench, netperf, oltp, etc. This patch will recover the scheduler behavior to old mode on all my Intel platforms: NHM EP/EX, WSM EP, SNB EP/EP4S, and thus fixes the perfromance regressions. (all of them just have 2 kinds distance, 10, 21) Signed-off-by: Alex Shi <alex.shi@intel.com> Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1338965571-9812-1-git-send-email-alex.shi@intel.comSigned-off-by: Ingo Molnar <mingo@kernel.org>
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Kamalesh Babulal authored
Commit 316ad248 ("sched/x86: Rewrite set_cpu_sibling_map()") broke the booted_cores accounting. The problem is that the booted_cores accounting needs all the sibling links set up. So restore the second loop and add a comment as to why its needed. On qemu booted with -smp sockets=1,cores=2,threads=2; Before: $ grep cores /proc/cpuinfo cpu cores : 2 cpu cores : 1 cpu cores : 4 cpu cores : 3 With the patch: $ grep cores /proc/cpuinfo cpu cores : 2 cpu cores : 2 cpu cores : 2 cpu cores : 2 Reported-by: Prarit Bhargava <prarit@redhat.com> Reported-by: Borislav Petkov <bp@amd64.org> Signed-off-by: Kamalesh Babulal <kamalesh@linux.vnet.ibm.com> Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/20120531073738.GH7511@linux.vnet.ibm.comSigned-off-by: Ingo Molnar <mingo@kernel.org>
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- 05 Jun, 2012 23 commits
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git://git.kernel.org/pub/scm/linux/kernel/git/ras/rasLinus Torvalds authored
Pull MCE regression fix from Tony Luck: "Typo/thinko in a cleanup caused a semantic change. Fix it." * tag 'please-pull-mce' of git://git.kernel.org/pub/scm/linux/kernel/git/ras/ras: x86/mce: Fix the MCE poll timer logic
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git://git.linaro.org/people/mszyprowski/linux-dma-mappingLinus Torvalds authored
Pull arm CMA fix from Marek Szyprowski: "This removes the ARMv6+ CMA dependency and lets one use old, well- tested dma-mapping implementation also on ARMv6+ systems without the need to use EXPERIMENTAL stuff." Russell King complained (rightly) about the experimental feature being forced on by the ARM config. Here CMA is "continuous memory allocator", not "cross-memory attach". We really neet to stop using insane TLA's for things that aren't big industry standards. * 'fixes-for-linus' of git://git.linaro.org/people/mszyprowski/linux-dma-mapping: ARM: dma-mapping: remove unconditional dependency on CMA
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Bryan Wu authored
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Karel Zak authored
Signed-off-by: Karel Zak <kzak@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pendingLinus Torvalds authored
Pull two scsi target fixes from Nicholas Bellinger: "The first is a small name-space collision fix from Stefan for the new sbp-target / ieee-1394 code, and second is the FILEIO backend conversion patch to always use O_DSYNC by default instead of O_SYNC as recommended by hch. Note the latter is CC'ed stable." * '3.5-merge-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending: target/file: Use O_DSYNC by default for FILEIO backends sbp-target: rename a variable to avoid name clash
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git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroupLinus Torvalds authored
Pull cgroup fix from Tejun Heo: "This fixes the possible premature superblock release on umount bug mentioned during v3.5-rc1 pull request. Originally, cgroup dentry destruction path assumed that cgroup dentry didn't have any reference left after cgroup removal thus put super during dentry removal. Now that there can be lingering dentry references, this led to super being put with live dentries. This patch fixes the problem by putting super ref on dentry release instead of removal." * 'for-3.5-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup: cgroup: superblock can't be released with active dentries
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git://git.pengutronix.de/git/wsa/linuxLinus Torvalds authored
Pull embedded i2c update from Wolfram Sang: "This only contains one new driver which had multiple dependencies (pinctrl, i2c-mux-rework, new devm_* functions), so I decided to wait for rc1. Plus, it had to wait a little for the ack of a devicetree maintainer since the bindings were not trivial enough for me to pass through. So, given that, I hope there is still something like the "new driver rule", so we could have the driver in 3.5 and people can start using it. That would make merging support for some boards easier for 3.6 since the dependency on this driver is gone then." * 'i2c-embedded/for-current' of git://git.pengutronix.de/git/wsa/linux: i2c: Add generic I2C multiplexer using pinctrl API
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git://git.kernel.org/pub/scm/virt/kvm/kvmLinus Torvalds authored
Pull kvm fix from Avi Kivity: "A one-liner fix for a buffer overflow" * git://git.kernel.org/pub/scm/virt/kvm/kvm: KVM: Fix buffer overflow in kvm_set_irq()
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git://people.freedesktop.org/~airlied/linuxLinus Torvalds authored
Pull drm radeon fixes from Dave Airlie: "This is just radeon fixes and a bunch of new PCI ids. The fixes are for a deadlock, an audio regression, and a couple of audio fixes." * 'drm-fixes' of git://people.freedesktop.org/~airlied/linux: drm/radeon/kms: add new SI PCI ids drm/radeon/kms: add new BTC PCI ids drm/radeon/kms: add new Palm, Sumo PCI ids drm/radeon/kms: add new Trinity PCI ids drm/radeon: fix vm deadlocks on cayman drm/radeon: fix gpu_init on si drm/radeon/hdmi: don't set SEND_MAX_PACKETS bit drm/radeon/audio: don't hardcode CRTC id drm/radeon: make audio_init consistent across asics
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Konstantin Khlebnikov authored
This patch fixes bug in macro radix_tree_for_each_contig(). If radix_tree_next_slot() sees NULL in next slot it returns NULL, but following radix_tree_next_chunk() switches iterating into next chunk. As result iterating becomes non-contiguous and breaks vfs "splice" and all its users. Signed-off-by: Konstantin Khlebnikov <khlebnikov@openvz.org> Reported-and-bisected-by: Hans de Bruin <jmdebruin@xmsnet.nl> Reported-and-bisected-by: Ondrej Zary <linux@rainbow-software.org> Reported-bisected-and-tested-by: Toralf Förster <toralf.foerster@gmx.de> Link: https://lkml.org/lkml/2012/6/5/64 Cc: stable <stable@vger.kernel.org> # 3.4.x Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Chen Gong authored
In commit 82f7af09 (x86/mce: Cleanup timer mess), Thomas just forgot the "/ 2" there while cleaning up. Signed-off-by: Chen Gong <gong.chen@linux.intel.com> Acked-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Tony Luck <tony.luck@intel.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/fuseLinus Torvalds authored
Pull fuse updates from Miklos Szeredi. * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/fuse: fuse: fix blksize calculation fuse: fix stat call on 32 bit platforms fuse: optimize fallocate on permanent failure fuse: add FALLOCATE operation fuse: Convert to kstrtoul_from_user
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull scheduler fixes from Ingo Molnar. * 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: sched: Remove NULL assignment of dattr_cur sched: Remove the last NULL entry from sched_feat_names sched: Make sched_feat_names const sched/rt: Fix SCHED_RR across cgroups sched: Move nr_cpus_allowed out of 'struct sched_rt_entity' sched: Make sure to not re-read variables after validation sched: Fix SD_OVERLAP sched: Don't try allocating memory from offline nodes sched/nohz: Fix rq->cpu_load calculations some more sched/x86: Use cpu_llc_shared_mask(cpu) for coregroup_mask
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Alex Deucher authored
Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Cc: stable@vger.kernel.org Signed-off-by: Dave Airlie <airlied@redhat.com>
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Alex Deucher authored
Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Cc: stable@vger.kernel.org Signed-off-by: Dave Airlie <airlied@redhat.com>
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Alex Deucher authored
Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Cc: stable@vger.kernel.org Signed-off-by: Dave Airlie <airlied@redhat.com>
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Alex Deucher authored
Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Cc: stable@vger.kernel.org Signed-off-by: Dave Airlie <airlied@redhat.com>
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Avi Kivity authored
kvm_set_irq() has an internal buffer of three irq routing entries, allowing connecting a GSI to three IRQ chips or on MSI. However setup_routing_entry() does not properly enforce this, allowing three irqchip routes followed by an MSI route to overflow the buffer. Fix by ensuring that an MSI entry is added to an empty list. Signed-off-by: Avi Kivity <avi@redhat.com>
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Christian König authored
Locking mutex in different orders just screams for deadlocks, and some testing showed that it is actually quite easy to trigger them. Signed-off-by: Christian König <deathsimple@vodafone.de> Reviewed-by: Jerome Glisse <jglisse@redhat.com> Cc: stable@vger.kernel.org Signed-off-by: Dave Airlie <airlied@redhat.com>
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Alex Deucher authored
- Properly set up the RBs - Properly set up the SPI - Properly set up gb_addr_config This should fix rendering issues on certain cards. Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
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Rafał Miłecki authored
Many TVs and A/V receivers don't work with this bit set. Problem was confirmed using: Onkyo TX-SR605, Sony BRAVIA KDL-52X3500, Sony BRAVIA KDL-40S40xx. In theory this bit shouldn't affect audio engine when feeding it with data, however it seems it does. Driver fglrx doesn't set that bit in any of the above cases. This fixes a regression introduced by 3.5-rc1. Signed-off-by: Rafał Miłecki <zajec5@gmail.com> Reviewed-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
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Rafał Miłecki authored
This is based on info released by AMD, should allow using audio in much more cases. Signed-off-by: Rafał Miłecki <zajec5@gmail.com> Reviewed-by: Alex Deucher <alexander.deucher@amd.com> Cc: <stable@vger.kernel.org> Signed-off-by: Dave Airlie <airlied@redhat.com>
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Alex Deucher authored
Call it in the asic startup callback on all asics. Previously r600 and rv770 called it in the startup and resume callbacks while all the other asics called it in the startup callback. Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Reviewed-by: Rafał Miłecki <zajec5@gmail.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
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- 04 Jun, 2012 12 commits
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git://git.kernel.org/pub/scm/linux/kernel/git/viro/{signal,vfs}Linus Torvalds authored
Pull signal and vfs compile breakage fixes from Al Viro. * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/signal: fixups for signal breakage * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: nommu: fix compilation of nommu.c
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git://git.samba.org/sfrench/cifs-2.6Linus Torvalds authored
Pull cifs fixes from Steve French. * 'for-next' of git://git.samba.org/sfrench/cifs-2.6: CIFS: Move get_next_mid to ops struct CIFS: Make accessing is_valid_oplock/dump_detail ops struct field safe CIFS: Improve identation in cifs_unlock_range CIFS: Fix possible wrong memory allocation
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Al Viro authored
Obvious brainos spotted by Geert. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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Greg Ungerer authored
Compiling 3.5-rc1 for nommu targets gives: CC mm/nommu.o mm/nommu.c: In function ‘sys_mmap_pgoff’: mm/nommu.c:1489:2: error: ‘ret’ undeclared (first use in this function) mm/nommu.c:1489:2: note: each undeclared identifier is reported only once for each function it appears in It is trivially fixed by replacing 'ret' with the local variable that is already defined for the return value 'retval'. Signed-off-by: Greg Ungerer <gerg@uclinux.org> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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git://git.kernel.org/pub/scm/linux/kernel/git/konrad/mmLinus Torvalds authored
Pull frontswap feature from Konrad Rzeszutek Wilk: "Frontswap provides a "transcendent memory" interface for swap pages. In some environments, dramatic performance savings may be obtained because swapped pages are saved in RAM (or a RAM-like device) instead of a swap disk. This tag provides the basic infrastructure along with some changes to the existing backends." Fix up trivial conflict in mm/Makefile due to removal of swap token code changing a line next to the new frontswap entry. This pull request came in before the merge window even opened, it got delayed to after the merge window by me just wanting to make sure it had actual users. Apparently IBM is using this on their embedded side, and Jan Beulich says that it's already made available for SLES and OpenSUSE users. Also acked by Rik van Riel, and Konrad points to other people liking it too. So in it goes. By Dan Magenheimer (4) and Konrad Rzeszutek Wilk (2) via Konrad Rzeszutek Wilk * tag 'stable/frontswap.v16-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/mm: frontswap: s/put_page/store/g s/get_page/load MAINTAINER: Add myself for the frontswap API mm: frontswap: config and doc files mm: frontswap: core frontswap functionality mm: frontswap: core swap subsystem hooks and headers mm: frontswap: add frontswap header file
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Linus Torvalds authored
Merge branches 'irq-urgent-for-linus' and 'smp-hotplug-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull irq and smpboot updates from Thomas Gleixner: "Just cleanup patches with no functional change and a fix for suspend issues." * 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: genirq: Introduce irq_do_set_affinity() to reduce duplicated code genirq: Add IRQS_PENDING for nested and simple irq * 'smp-hotplug-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: smpboot, idle: Fix comment mismatch over idle_threads_init() smpboot, idle: Optimize calls to smp_processor_id() in idle_threads_init()
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull timer updates from Thomas Gleixner: "The clocksource driver is pure hardware enablement and the skew option is default off, well tested and non dangerous." * 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: tick: Move skew_tick option into the HIGH_RES_TIMER section clocksource: em_sti: Add DT support clocksource: em_sti: Emma Mobile STI driver clockevents: Make clockevents_config() a global symbol tick: Add tick skew boot option
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Linus Torvalds authored
Cyrill Gorcunov reports that I broke the fdinfo files with commit 30a08bf2 ("proc: move fd symlink i_mode calculations into tid_fd_revalidate()"), and he's quite right. The tid_fd_revalidate() function is not just used for the <tid>/fd symlinks, it's also used for the <tid>/fdinfo/<fd> files, and the permission model for those are different. So do the dynamic symlink permission handling just for symlinks, making the fdinfo files once more appear as the proper regular files they are. Of course, Al Viro argued (probably correctly) that we shouldn't do the symlink permission games at all, and make the symlinks always just be the normal 'lrwxrwxrwx'. That would have avoided this issue too, but since somebody noticed that the permissions had changed (which was the reason for that original commit 30a08bf2 in the first place), people do apparently use this feature. [ Basically, you can use the symlink permission data as a cheap "fdinfo" replacement, since you see whether the file is open for reading and/or writing by just looking at st_mode of the symlink. So the feature does make sense, even if the pain it has caused means we probably shouldn't have done it to begin with. ] Reported-and-tested-by: Cyrill Gorcunov <gorcunov@openvz.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Stephen Warren authored
This is useful for SoCs whose I2C module's signals can be routed to different sets of pins at run-time, using the pinctrl API. +-----+ +-----+ | dev | | dev | +------------------------+ +-----+ +-----+ | SoC | | | | /----|------+--------+ | +---+ +------+ | child bus A, on first set of pins | |I2C|---|Pinmux| | | +---+ +------+ | child bus B, on second set of pins | \----|------+--------+--------+ | | | | | +------------------------+ +-----+ +-----+ +-----+ | dev | | dev | | dev | +-----+ +-----+ +-----+ Signed-off-by: Stephen Warren <swarren@nvidia.com> Acked-by: Linus Walleij <linus.walleij@linaro.org> Acked-by: Rob Herring <rob.herring@calxeda.com> Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
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Marek Szyprowski authored
CMA has been enabled unconditionally on all ARMv6+ systems to solve the long standing issue of double kernel mappings for all dma coherent buffers. This however created a dependency on CONFIG_EXPERIMENTAL for the whole ARM architecture what should be really avoided. This patch removes this dependency and lets one use old, well-tested dma-mapping implementation also on ARMv6+ systems without the need to use EXPERIMENTAL stuff. Reported-by: Russell King <linux@arm.linux.org.uk> Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
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Kukjin Kim authored
Should be 'exynos5_xxx' instead of 'exonys5_xxx'. It happened at the commit 30b84288 ("Merge tag 'soc2' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc") during v3.5 merge window. Signed-off-by: Kukjin Kim <kgene.kim@samsung.com> [ My bad - Linus ] Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pmLinus Torvalds authored
Pull some left-over PM patches from Rafael J. Wysocki. * 'pm-acpi' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: ACPI / PM: Make acpi_pm_device_sleep_state() follow the specification ACPI / PM: Make __acpi_bus_get_power() cover D3cold correctly ACPI / PM: Fix error messages in drivers/acpi/bus.c rtc-cmos / PM: report wakeup event on ACPI RTC alarm ACPI / PM: Generate wakeup events on fixed power button
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