- 14 Jan, 2013 2 commits
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Paul Mundt authored
Somewhere along the line the ebss label was taken out, resulting in pcrel branch too far errors. Restore the label to get things building again. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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Paul Mundt authored
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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- 11 Jan, 2013 3 commits
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Thomas Schwinge authored
Ensure that the aux table is properly initialized, even when optional features are missing. Without this, the FDPIC loader did not work. This was meant to be included in commit d5ab7803. Signed-off-by: Thomas Schwinge <thomas@codesourcery.com> Cc: stable@vger.kernel.org Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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Kuninori Morimoto authored
764f4e4e (sh: clkfwk: Use shared sh_clk_div_enable/disable()) shared enable/disable funcions for div4/div6. But new sh_clk_div_enable() didn't care sh_clk_div_set_rate() which is required on div6 clock. This patch fixes it. Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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Kuninori Morimoto authored
b4265f12 (mm: use vm_unmapped_area() on sh architecture) broke sh boot. This patch define TASK_UNMAPPED_BASE as a page aligned constant to solve this issue. Special thanks to Michel Acked-by: Michel Lespinasse <walken@google.com> Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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- 10 Jan, 2013 10 commits
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Randy Dunlap authored
Fix kernel-doc warnings in fs/seq_file.c: Warning(fs/seq_file.c:304): No description found for parameter 'whence' Warning(fs/seq_file.c:304): Excess function parameter 'origin' description in 'seq_lseek' Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Cc: Alexander Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Randy Dunlap authored
Fix kernel-doc warning in iov.c: Warning(drivers/pci/iov.c:752): No description found for parameter 'numvfs' Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Sorry-by: Don Dutile <ddutile@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Randy Dunlap authored
Fix new kernel-doc warning in auditfilter.c: Warning(kernel/auditfilter.c:1157): Excess function parameter 'uid' description in 'audit_receive_filter' Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Eric Paris <eparis@redhat.com> Cc: linux-audit@redhat.com (subscribers-only) Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Randy Dunlap authored
Fix new kernel-doc warnings in clnt.c: Warning(net/sunrpc/clnt.c:561): No description found for parameter 'flavor' Warning(net/sunrpc/clnt.c:561): Excess function parameter 'auth' description in 'rpc_clone_client_set_auth' Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Cc: Trond Myklebust <Trond.Myklebust@netapp.com> Cc: "J. Bruce Fields" <bfields@fieldses.org> Cc: linux-nfs@vger.kernel.org Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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git://cavan.codon.org.uk/platform-drivers-x86Linus Torvalds authored
Pull x86 platform driver bugfixes from Matthew Garrett. * 'for_linus' of git://cavan.codon.org.uk/platform-drivers-x86: asus-laptop: Fix potential invalid pointer dereference Update MAINTAINERS entry asus-laptop: Do not call HWRS on init sony-laptop: fix SNC buffer calls when SN06 returns Integers samsung-laptop: Add quirk for broken acpi_video backlight on N250P acer-wmi: add Aspire 5741G touchpad toggle key acer-wmi: change to emit touchpad on off key acer-wmi: fix obj is NULL but dereferenced MAINTAINERS: change the mail address of acer-wmi/msi-laptop maintainer
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git://git.kernel.org/pub/scm/virt/kvm/kvmLinus Torvalds authored
Pull KVM bugfixes from Marcelo Tosatti. * git://git.kernel.org/pub/scm/virt/kvm/kvm: KVM: x86: use dynamic percpu allocations for shared msrs area KVM: PPC: Book3S HV: Fix compilation without CONFIG_PPC_POWERNV powerpc: Corrected include header path in kvm_para.h Add rcu user eqs exception hooks for async page fault
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Linus Torvalds authored
Merge tag 'trace-3.8-rc2-regression-fix' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace Pull tracing regression fix from Steven Rostedt: "A change that came in this merge window broke the writing to the trace_options file. It causes garbage to be read during the compare of option names, and breaks setting options via the trace_options file, although options can still be set via the options/<option> files." * tag 'trace-3.8-rc2-regression-fix' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace: tracing: Fix regression of trace_options file setting
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git://git.kernel.org/pub/scm/linux/kernel/git/s390/linuxLinus Torvalds authored
Pull s390 patches from Martin Schwidefsky: "Add the finit_module system call, fix the irq statistics in /proc/stat, fix a s390dbf lockdep problem, a patch revert for a problem that is not 100% understood yet, and a few patches to fix warnings." * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: s390/pci: define read*_relaxed functions s390/topology: export cpu_topology s390/pm: export pm_power_off s390/pci: define isa_dma_bridge_buggy s390/3215: partially revert tty close handling fix s390/irq: count cpu restart events s390/irq: remove split irq fields from /proc/stat s390/irq: enable irq sum accounting for /proc/stat again s390/syscalls: wire up finit_module syscall s390/pci: remove dead code s390/smp: fix section mismatch for smp_add_present_cpu() s390/debug: Fix s390dbf lockdep problem in debug_(un)register_view()
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Linus Torvalds authored
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Steven Rostedt authored
The latest change to allow trace options to be set on the command line also broke the trace_options file. The zeroing of the last byte of the option name that is echoed into the trace_option file was removed with the consolidation of some of the code. The compare between the option and what was written to the trace_options file fails because the string holding the data written doesn't terminate with a null character. A zero needs to be added to the end of the string copied from user space. Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
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- 09 Jan, 2013 6 commits
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git://git.linaro.org/people/rmk/linux-armLinus Torvalds authored
Pull ARM fixes from Russell King. * 'fixes' of git://git.linaro.org/people/rmk/linux-arm: ARM: 7616/1: cache-l2x0: aurora: Use writel_relaxed instead of writel ARM: 7615/1: cache-l2x0: aurora: Invalidate during clean operation with WT enable ARM: 7614/1: mm: fix wrong branch from Cortex-A9 to PJ4b ARM: 7612/1: imx: Do not select some errata that depends on !ARCH_MULTIPLATFORM ARM: 7611/1: VIC: fix bug in VIC irqdomain code ARM: 7610/1: versatile: bump IRQ numbers ARM: 7609/1: disable errata work-arounds which access secure registers ARM: 7608/1: l2x0: Only set .set_debug on PL310 r3p0 and earlier
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git://git.kernel.org/pub/scm/linux/kernel/git/bp/bpLinus Torvalds authored
Pull EDAC fixes from Borislav Petkov: "Two error path fixes causing a crash and a Kconfig fix for an issue which spilled all EDAC suboptions into the 'Device Drivers' menu." * tag 'edac_fixes_for_3.8' of git://git.kernel.org/pub/scm/linux/kernel/git/bp/bp: EDAC: Cleanup device deregistering path EDAC: Fix EDAC Kconfig menu EDAC: Fix kernel panic on module unloading
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Linus Torvalds authored
The check for a pmd being in the process of being split was dropped by mistake by commit d10e63f2 ("mm: numa: Create basic numa page hinting infrastructure"). Put it back. Reported-by: Dave Jones <davej@redhat.com> Debugged-by: Hillf Danton <dhillf@gmail.com> Acked-by: Andrea Arcangeli <aarcange@redhat.com> Acked-by: Mel Gorman <mgorman@suse.de> Cc: Kirill Shutemov <kirill@shutemov.name> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Marc Dionne authored
Commit 3a50597d ("KEYS: Make the session and process keyrings per-thread") removed the definition of the thread_group_cred structure, but left a now unused pointer in struct cred. Signed-off-by: Marc Dionne <marc.c.dionne@gmail.com> Signed-off-by: David Howells <dhowells@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-socLinus Torvalds authored
Pull ARM SoC fixes from Olof Johansson: "People are back from the holiday breaks, and it shows. Here are a bunch of fixes for a number of platforms: - A couple of small fixes for Nomadik - A larger set of changes for kirkwood/mvebu - uart driver selection, dt clocks, gpio-poweroff fixups, a few __init annotation fixes and some error handling improvement in their xor dma driver. - i.MX had a couple of minor fixes (and a critical one for flexcan2 clock setup) - MXS has a small board fix and a framebuffer bugfix - A set of fixes for Samsung Exynos, fixing default bootargs and some Exynos5440 clock issues - A set of OMAP changes including PM fixes and a few sparse warning fixups All in all a bit more positive code delta than we'd ideally want to see here, mostly from the OMAP PM changes, but nothing overly crazy." * tag 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (44 commits) ARM: clps711x: Fix bad merge of clockevents setup ARM: highbank: save and restore L2 cache and GIC on suspend ARM: highbank: add a power request clear ARM: highbank: fix secondary boot and hotplug ARM: highbank: fix typos with hignbank in power request functions ARM: dts: fix highbank cpu mpidr values ARM: dts: add device_type prop to cpu nodes on Calxeda platforms ARM: mx5: Fix MX53 flexcan2 clock ARM: OMAP2+: am33xx-hwmod: Fix wrongly terminated am33xx_usbss_mpu_irqs array pinctrl: mvebu: make pdma clock on dove mandatory ARM: Dove: Add pinctrl clock to DT dma: mv_xor: fix error handling for clocks dma: mv_xor: fix error handling of mv_xor_channel_add() arm: mvebu: Add missing ; for cpu node. arm: mvebu: Armada XP MV78230 has only three Ethernet interfaces arm: mvebu: Armada XP MV78230 has two cores, not one clk: mvebu: Remove inappropriate __init tagging ARM: Kirkwood: Use fixed-regulator instead of board gpio call ARM: Kirkwood: Fix missing sdio clock ARM: Kirkwood: Switch TWSI1 of 88f6282 to DT clock providers ...
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git://people.freedesktop.org/~airlied/linuxLinus Torvalds authored
Pull drm update from Dave Airlie: "Exynos and Radeon mostly, with a dma-buf and ttm fix thrown in. It's a bit big but its mostly exynos license fix ups and I'd rather not hold those up since its legally stuff. Radeon has a couple of fixes from dma engine work, TTM is just a locking fix, and dma-buf fix has been hanging around and I finally got a chance to review it." * 'drm-fixes' of git://people.freedesktop.org/~airlied/linux: (30 commits) drm/ttm: fix fence locking in ttm_buffer_object_transfer drm/prime: drop reference on imported dma-buf come from gem drm/radeon: add quirk for d3 delay during switcheroo poweron for apple macbooks drm/exynos: move finish page flip to a common place drm/exynos: fimd: modify condition in fimd resume drm/radeon: fix DMA CS parser for r6xx linear copy packet drm/radeon: split r6xx and r7xx copy_dma functions drm/exynos: Use devm_clk_get in exynos_drm_gsc.c drm/exynos: Remove redundant NULL check in exynos_drm_gsc.c drm/exynos: Remove explicit freeing using devm_* APIs in exynos_drm_gsc.c drm/exynos: Use devm_clk_get in exynos_drm_rotator.c drm/exynos: Remove redundant NULL check in exynos_drm_rotator.c drm/exynos: Remove unnecessary devm_* freeing APIs in exynos_drm_rotator.c drm/exynos: Use devm_clk_get in exynos_drm_fimc.c drm/exynos: Remove redundant NULL check drm/exynos: Remove explicit freeing using devm_* APIs in exynos_drm_fimc.c drm/exynos: Use devm_kzalloc in exynos_drm_ipp.c drm/exynos: fix gem buffer allocation type checking drm/exynos: remove needless parenthesis. drm/exynos: fix incorrect interrupt induced by m2m operation. ...
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- 08 Jan, 2013 19 commits
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Olof Johansson authored
Merge tag 'omap-for-v3.8-rc2/fixes-signed-v2' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into fixes From Tony Lindgren: The biggest change is a fix to deal with different power state on omap2 registers that causes issues trying to use common PM code. Also fix few incorrect registers, and an issue for omap1 USB, and few sparse fixes for issues that sneaked in with all the clean-up. * tag 'omap-for-v3.8-rc2/fixes-signed-v2' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap: ARM: OMAP2+: am33xx-hwmod: Fix wrongly terminated am33xx_usbss_mpu_irqs array ARM: OMAP1: fix USB configuration use-after-release ARM: OMAP2/3: PRM: fix bogus OMAP2xxx powerstate return values ARM: OMAP3: clock data: Add missing enable/disable for EMU clock ARM: OMAP4: PRM: Correct wrong instance usage for reading reset sources ARM: OMAP4: PRM: fix RSTTIME and RSTST offsets ARM: OMAP4: PRM: Correct reset source map ARM: OMAP: SRAM: resolve sparse warnings ARM: OMAP AM33xx: hwmod data: resolve sparse warnings ARM: OMAP: 32k counter: resolve sparse warnings Signed-off-by: Olof Johansson <olof@lixom.net>
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Olof Johansson authored
Merge branch 'v3.8-samsung-fixes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung into fixes From Kukjin Kim: Most of them are EXYNOS5440 fixes which are for changing uart console, cpu id (typo) and silent complaining gpio error in kernel boot. * 'v3.8-samsung-fixes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung: ARM: EXYNOS: skip the clock initialization for exynos5440 ARM: EXYNOS: enable PINCTRL for EXYNOS5440 ARM: dts: use uart port1 for console on exynos4210-smdkv310 ARM: dts: use uart port0 for console on exynos5440-ssdk5440 ARM: SAMSUNG: fix the cpu id for EXYNOS5440 ARM: EXYNOS: Revise HDMI resource size
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git://git.linaro.org/people/shawnguo/linux-2.6Olof Johansson authored
From Shawn Guo: I have to send one critical mxsfb fix through arm-soc, as FB maintainer is unresponsive for quite a while. People start complaining the missing of such an important fix. * tag 'mxs-fixes-3.8' of git://git.linaro.org/people/shawnguo/linux-2.6: video: mxsfb: fix crash when unblanking the display ARM: dts: imx23-olinuxino: Fix IOMUX settings
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git://git.linaro.org/people/shawnguo/linux-2.6Olof Johansson authored
From Shawn Guo: It includes one critical fix - wrong flexcan2 clock will hang system when the port gets brought up. The other two are non-critical fixes, which are sent together here, since it's still early -rc stage. * tag 'imx-fixes-3.8' of git://git.linaro.org/people/shawnguo/linux-2.6: ARM: mx5: Fix MX53 flexcan2 clock ARM: dts: imx31-bug: Fix manufacturer compatible string clk: imx: Remove 'clock-output-names' from the examples
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git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/soundLinus Torvalds authored
Pull sound fixes from Takashi Iwai: "Nothing too exciting here, just a few regression and trivial fixes, and new quirks for HD-audio and USB-audio. - HD-audio mute LED mode enum fix - Fix kernel panic of Digidesign Mbox2 usb-audio quirk (which was new in 3.8-rc1) - Creative BT-D1 usb-audio quirk - mute LED fixup for HP Pavillion 17 laptop" * tag 'sound-3.8' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: ALSA: hda - add mute LED for HP Pavilion 17 (Realtek codec) ALSA: au88x0: fix incorrect left shift sound: oss/pas2: Fix possible access out of array ALSA: usb-audio: Fix kernel panic of Digidesign Mbox2 quirk ALSA: usb-audio: Add support for Creative BT-D1 via usb sound quirks ALSA: hda - Switch "On" and "Off" for "Mute-LED Mode" kcontrol
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git://git.kernel.org/pub/scm/linux/kernel/git/davem/netLinus Torvalds authored
Pull networking fixes from David Miller: 1) New sysctl ndisc_notify needs some documentation, from Hanns Frederic Sowa. 2) Netfilter REJECT target doesn't set transport header of SKB correctly, from Mukund Jampala. 3) Forcedeth driver needs to check for DMA mapping failures, from Larry Finger. 4) brcmsmac driver can't use usleep_range while holding locks, use udelay instead. From Niels Ole Salscheider. 5) Fix unregister of netlink bridge multicast database handlers, from Vlad Yasevich and Rami Rosen. 6) Fix checksum calculations in netfilter's ipv6 network prefix translation module. 7) Fix high order page allocation failures in netfilter xt_recent, from Eric Dumazet. 8) mac802154 needs to use netif_rx_ni() instead of netif_rx() because mac802154_process_data() can execute in process rather than interrupt context. From Alexander Aring. 9) Fix splice handling of MSG_SENDPAGE_NOTLAST, otherwise we elide one tcp_push() too many. From Eric Dumazet and Willy Tarreau. 10) Fix skb->truesize tracking in XEN netfront driver, from Ian Campbell. * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (46 commits) xen/netfront: improve truesize tracking ipv4: fix NULL checking in devinet_ioctl() tcp: fix MSG_SENDPAGE_NOTLAST logic net/ipv4/ipconfig: really display the BOOTP/DHCP server's address. ip-sysctl: fix spelling errors mac802154: fix NOHZ local_softirq_pending 08 warning ipv6: document ndisc_notify in networking/ip-sysctl.txt ath9k: Fix Kconfig for ATH9K_HTC netfilter: xt_recent: avoid high order page allocations netfilter: fix missing dependencies for the NOTRACK target netfilter: ip6t_NPT: fix IPv6 NTP checksum calculation bridge: add empty br_mdb_init() and br_mdb_uninit() definitions. vxlan: allow live mac address change bridge: Correctly unregister MDB rtnetlink handlers brcmfmac: fix parsing rsn ie for ap mode. brcmsmac: add copyright information for Canonical rtlwifi: rtl8723ae: Fix warning for unchecked pci_map_single() call rtlwifi: rtl8192se: Fix warning for unchecked pci_map_single() call rtlwifi: rtl8192de: Fix warning for unchecked pci_map_single() call rtlwifi: rtl8192ce: Fix warning for unchecked pci_map_single() call ...
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Marcelo Tosatti authored
Use dynamic percpu allocations for the shared msrs structure, to avoid using the limited reserved percpu space. Reviewed-by: Gleb Natapov <gleb@redhat.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
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Heiko Carstens authored
Just map the read*_relaxed() functions to their corresponding read*() functions. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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Heiko Carstens authored
Export cpu_topology symbol, so it's available for modules. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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Heiko Carstens authored
Export pm_power_off symbol. Needed by at least one of the new device drivers that come with CONFIG_PCI. And all other architectures export that symbol as well. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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Heiko Carstens authored
Define isa_dma_bridge_buggy. Needed to make pci quirks compile: drivers/pci/quirks.c: In function ‘quirk_isa_dma_hangs’: drivers/pci/quirks.c:88:7: error: ‘isa_dma_bridge_buggy’ undeclared (first use in this function) Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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Heiko Carstens authored
Partially revert ae289dc1 "s390/3215: fix tty close handling", since this leads sometimes to hanging agetty processes and therefore systems that get stuck while starting. This was magically fixed (bisected) by a common code patch from Alan Cox: 36b3c070 "tty: Move the handling of the tty release logic", however it was unrelated. Since the removed code worked for a decade, nobody knows anymore why it was in there in the first place and debugging the observed hang is non-trivial (at least for me :) ), let's just re-add the removed code before we see other side effects. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
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Heiko Carstens authored
Count CPU Restart events and make them visible via /proc/interrupts. Every CPU hotplug (online) event will increase the per cpu counter. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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Heiko Carstens authored
Now that irq sum accounting for /proc/stat's "intr" line works again we have the oddity that the sum field (first field) contains only the sum of the second (external irqs) and third field (I/O interrupts). The reason for that is that these two fields are already sums of all other fields. So if we would sum up everything we would count every interrupt twice. This is broken since the split interrupt accounting was merged two years ago: 052ff461 "[S390] irq: have detailed statistics for interrupt types". To fix this remove the split interrupt fields from /proc/stat's "intr" line again and only have them in /proc/interrupts. This restores the old behaviour, seems to be the only sane fix and mimics a behaviour from other architectures where /proc/interrupts also contains more than /proc/stat's "intr" line does. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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Heiko Carstens authored
For more than two years, since f2c66cd8 "/proc/stat: scalability of irq num per cpu" the output of /proc/stat is broken. The first field in the "intr" line should contain the sum of all interrupts, however since the above mentioned change it is always zero. The reason for that is that a per cpu irq sum variable had been introduced which got incremented when calling kstat_incr_irqs_this_cpu(). However on s390 we directly incremented only the per cpu per irq counter by accessing the array element via kstat_cpu(smp_processor_id()).irqs[...]. So fix this and use the kstat_incr_irqs_this_cpu() wrapper which increments both: the per cpu per irq counter and the per cpu irq sum counter. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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Heiko Carstens authored
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
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Heiko Carstens authored
Get rid of these: arch/s390/pci/pci_dma.c:16:29: warning: ‘zpci_ioat_dt’ defined but not used [-Wunused-variable] arch/s390/pci/pci.c:164:12: warning: ‘zpci_store_fib’ defined but not used [-Wunused-function] Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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Heiko Carstens authored
Fixes this section mismatch: WARNING: vmlinux.o(.text+0x145e4): Section mismatch in reference from the function smp_add_present_cpu() to the function .cpuinit.text:register_cpu() The function smp_add_present_cpu() references the function __cpuinit register_cpu(). This is often because smp_add_present_cpu lacks a __cpuinit annotation or the annotation of register_cpu is wrong. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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Michael Holzheu authored
The debug_register/unregister_view() functions call debugfs_remove() while holding the debug_info spinlock. Because debugfs_remove() takes a mutex and therefore can sleep this is not allowed. To fix the problem we give up the debug_info lock before calling debugfs_remove(). The following shows the lockdep message: [ INFO: possible circular locking dependency detected ] ------------------------------------------------------- rmmod/4379 is trying to acquire lock: (&sb->s_type->i_mutex_key#2){+.+.+.}, at: [<00000000003acae2>] debugfs_remove+0x5e/0xa but task is already holding lock: (&(&rc->lock)->rlock){-.-...}, at: [<000000000010a5ae>] debug_unregister_view+0x3a/0xd which lock already depends on the new lock. -> #0 (&sb->s_type->i_mutex_key#2){+.+.+.}: [<00000000001b1644>] validate_chain+0x880/0x1154 [<00000000001b4d6c>] __lock_acquire+0x414/0xc44 [<00000000001b5c16>] lock_acquire+0xbe/0x178 [<0000000000614016>] mutex_lock_nested+0x66/0x36c [<00000000003acae2>] debugfs_remove+0x5e/0xac [<000000000010a620>] debug_unregister_view+0xac/0xd0 [<000003ff8002f140>] qeth_core_exit+0x48/0xf08 [qeth] [<00000000001c35a4>] SyS_delete_module+0x1a4/0x260 [<0000000000618134>] sysc_noemu+0x22/0x28 [<000003fffd4704da>] 0x3fffd4704da Signed-off-by: Michael Holzheu <holzheu@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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