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* ntfs: use find_get_page_flags() to mark page accessed as it is no longer ↵Anton Altaparmakov2014-10-102-3/+4
| | | | | | | | | | | | | | | | | marked later on Mel Gorman's commit 2457aec63745 ("mm: non-atomically mark page accessed during page cache allocation where possible") removed mark_page_accessed() calls from NTFS without updating the matching find_lock_page() to find_get_page_flags(GFP_LOCK | FGP_ACCESSED) thus causing the page to never be marked accessed. This patch fixes that. Signed-off-by: Anton Altaparmakov <anton@tuxera.com> Cc: Mel Gorman <mel@csn.ul.ie> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* m32r: remove deprecated IRQF_DISABLEDMichael Opdenacker2014-10-101-1/+0
| | | | | | | | | | | | This patch removes the use of the IRQF_DISABLED flag from arch/m32r/kernel/time.c It's a NOOP since 2.6.35 and it will be removed one day. Signed-off-by: Michael Opdenacker <michael.opdenacker@free-electrons.com> Cc: Hirokazu Takata <takata@linux-m32r.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* m32r: use Kbuild logic to include <asm-generic/sections.h>Geert Uytterhoeven2014-10-102-7/+1
| | | | | | | Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Hirokazu Takata <takata@linux-m32r.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* fanotify: enable close-on-exec on events' fd when requested in fanotify_init()Yann Droneaud2014-10-101-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | According to commit 80af258867648 ("fanotify: groups can specify their f_flags for new fd"), file descriptors created as part of file access notification events inherit flags from the event_f_flags argument passed to syscall fanotify_init(2)[1]. Unfortunately O_CLOEXEC is currently silently ignored. Indeed, event_f_flags are only given to dentry_open(), which only seems to care about O_ACCMODE and O_PATH in do_dentry_open(), O_DIRECT in open_check_o_direct() and O_LARGEFILE in generic_file_open(). It's a pity, since, according to some lookup on various search engines and http://codesearch.debian.net/, there's already some userspace code which use O_CLOEXEC: - in systemd's readahead[2]: fanotify_fd = fanotify_init(FAN_CLOEXEC|FAN_NONBLOCK, O_RDONLY|O_LARGEFILE|O_CLOEXEC|O_NOATIME); - in clsync[3]: #define FANOTIFY_EVFLAGS (O_LARGEFILE|O_RDONLY|O_CLOEXEC) int fanotify_d = fanotify_init(FANOTIFY_FLAGS, FANOTIFY_EVFLAGS); - in examples [4] from "Filesystem monitoring in the Linux kernel" article[5] by Aleksander Morgado: if ((fanotify_fd = fanotify_init (FAN_CLOEXEC, O_RDONLY | O_CLOEXEC | O_LARGEFILE)) < 0) Additionally, since commit 48149e9d3a7e ("fanotify: check file flags passed in fanotify_init"). having O_CLOEXEC as part of fanotify_init() second argument is expressly allowed. So it seems expected to set close-on-exec flag on the file descriptors if userspace is allowed to request it with O_CLOEXEC. But Andrew Morton raised[6] the concern that enabling now close-on-exec might break existing applications which ask for O_CLOEXEC but expect the file descriptor to be inherited across exec(). In the other hand, as reported by Mihai Dontu[7] close-on-exec on the file descriptor returned as part of file access notify can break applications due to deadlock. So close-on-exec is needed for most applications. More, applications asking for close-on-exec are likely expecting it to be enabled, relying on O_CLOEXEC being effective. If not, it might weaken their security, as noted by Jan Kara[8]. So this patch replaces call to macro get_unused_fd() by a call to function get_unused_fd_flags() with event_f_flags value as argument. This way O_CLOEXEC flag in the second argument of fanotify_init(2) syscall is interpreted and close-on-exec get enabled when requested. [1] http://man7.org/linux/man-pages/man2/fanotify_init.2.html [2] http://cgit.freedesktop.org/systemd/systemd/tree/src/readahead/readahead-collect.c?id=v208#n294 [3] https://github.com/xaionaro/clsync/blob/v0.2.1/sync.c#L1631 https://github.com/xaionaro/clsync/blob/v0.2.1/configuration.h#L38 [4] http://www.lanedo.com/~aleksander/fanotify/fanotify-example.c [5] http://www.lanedo.com/2013/filesystem-monitoring-linux-kernel/ [6] http://lkml.kernel.org/r/20141001153621.65e9258e65a6167bf2e4cb50@linux-foundation.org [7] http://lkml.kernel.org/r/20141002095046.3715eb69@mdontu-l [8] http://lkml.kernel.org/r/20141002104410.GB19748@quack.suse.cz Link: http://lkml.kernel.org/r/cover.1411562410.git.ydroneaud@opteya.com Signed-off-by: Yann Droneaud <ydroneaud@opteya.com> Reviewed-by: Jan Kara <jack@suse.cz> Reviewed by: Heinrich Schuchardt <xypron.glpk@gmx.de> Tested-by: Heinrich Schuchardt <xypron.glpk@gmx.de> Cc: Mihai Don\u021bu <mihai.dontu@gmail.com> Cc: Pádraig Brady <P@draigBrady.com> Cc: Heinrich Schuchardt <xypron.glpk@gmx.de> Cc: Jan Kara <jack@suse.cz> Cc: Valdis Kletnieks <Valdis.Kletnieks@vt.edu> Cc: Michael Kerrisk-manpages <mtk.manpages@gmail.com> Cc: Lino Sanfilippo <LinoSanfilippo@gmx.de> Cc: Richard Guy Briggs <rgb@redhat.com> Cc: Eric Paris <eparis@redhat.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Michael Kerrisk <mtk.manpages@gmail.com> Cc: <stable@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* fsnotify: don't put user context if it was never assignedSasha Levin2014-10-101-2/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | On some failure paths we may attempt to free user context even if it wasn't assigned yet. This will cause a NULL ptr deref and a kernel BUG. The path I was looking at is in inotify_new_group(): oevent = kmalloc(sizeof(struct inotify_event_info), GFP_KERNEL); if (unlikely(!oevent)) { fsnotify_destroy_group(group); return ERR_PTR(-ENOMEM); } fsnotify_destroy_group() would get called here, but group->inotify_data.user is only getting assigned later: group->inotify_data.user = get_current_user(); Signed-off-by: Sasha Levin <sasha.levin@oracle.com> Cc: John McCutchan <john@johnmccutchan.com> Cc: Robert Love <rlove@rlove.org> Cc: Eric Paris <eparis@parisplace.org> Reviewed-by: Heinrich Schuchardt <xypron.glpk@gmx.de> Reviewed-by: Jan Kara <jack@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* fs/notify/group.c: make fsnotify_final_destroy_group() staticAndrew Morton2014-10-102-4/+1
| | | | | | | | No callers outside this file. Cc: Sasha Levin <sasha.levin@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* cris: use Kbuild logic to include <asm-generic/sections.h>Geert Uytterhoeven2014-10-102-7/+1
| | | | | | | Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org> Acked-by: Jesper Nilsson <jesper.nilsson@axis.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* mn10300: use Kbuild logic to include <asm-generic/sections.h>Geert Uytterhoeven2014-10-102-1/+1
| | | | | | | Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org> 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>
* Merge branch 'irq-core-for-linus' of ↵Linus Torvalds2014-10-0945-203/+1356
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull irq updates from Thomas Gleixner: "The irq departement delivers: - a cleanup series to get rid of mindlessly copied code. - another bunch of new pointlessly different interrupt chip drivers. Adding homebrewn irq chips (and timers) to SoCs must provide a value add which is beyond the imagination of mere mortals. - the usual SoC irq controller updates, IOW my second cat herding project" * 'irq-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (44 commits) irqchip: gic-v3: Implement CPU PM notifier irqchip: gic-v3: Refactor gic_enable_redist to support both enabling and disabling irqchip: renesas-intc-irqpin: Add minimal runtime PM support irqchip: renesas-intc-irqpin: Add helper variable dev = &pdev->dev irqchip: atmel-aic5: Add sama5d4 support irqchip: atmel-aic5: The sama5d3 has 48 IRQs Documentation: bcm7120-l2: Add Broadcom BCM7120-style L2 binding irqchip: bcm7120-l2: Add Broadcom BCM7120-style Level 2 interrupt controller irqchip: renesas-irqc: Add binding docs for new R-Car Gen2 SoCs irqchip: renesas-irqc: Add DT binding documentation irqchip: renesas-intc-irqpin: Document SoC-specific bindings openrisc: Get rid of handle_IRQ arm64: Get rid of handle_IRQ ARM: omap2: irq: Convert to handle_domain_irq ARM: imx: tzic: Convert to handle_domain_irq ARM: imx: avic: Convert to handle_domain_irq irqchip: or1k-pic: Convert to handle_domain_irq irqchip: atmel-aic5: Convert to handle_domain_irq irqchip: atmel-aic: Convert to handle_domain_irq irqchip: gic-v3: Convert to handle_domain_irq ...
| * Merge tag 'irqchip-core-3.18-2' of ↵Thomas Gleixner2014-10-036-24/+385
| |\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.infradead.org/users/jcooper/linux into irq/core irqchip core changes for v3.18 (round 2) from Jason Cooper * atmel: - Add sama5d4 support - Correct # irqs for sama5d3 * broadcom: - Add bcm7120 l2 interrupt controller and DT binding * gic-v3: - Add CPU PM notifier - Add enable/disable support to gic_enable_redist
| | * Merge branch 'irqchip/gic' into irqchip/coreJason Cooper2014-10-021-21/+66
| | |\
| | | * irqchip: gic-v3: Implement CPU PM notifierSudeep Holla2014-09-141-11/+46
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When a CPU enters a low power state, the contents of the GICv3/4 system registers are lost. They need to be saved and restored if required. For now, since most of the GICv3 register are set some initial values and not modified at runtime, it is better to re-initialise rather than saving and restoring them. It may need to be saved and restored in future if required. This patch adds a notifier to disable the redistributor(if allowed) and Group1 interrupts when powering down the processor and to re-initialise the system registers on wakeup. Cc: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Signed-off-by: Sudeep Holla <sudeep.holla@arm.com> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com> Acked-by: Marc Zyngier <marc.zyngier@arm.com> Link: https://lkml.kernel.org/r/1409065415-20176-3-git-send-email-sudeep.holla@arm.com Signed-off-by: Jason Cooper <jason@lakedaemon.net>
| | | * irqchip: gic-v3: Refactor gic_enable_redist to support both enabling and ↵Sudeep Holla2014-09-141-10/+20
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | disabling Currently gic_enable_redist configures the redistributors to never assert WakeRequest signal. However when powering down the processors with wake-up enabled(i.e suspend), we need to configure it to assert that signal. This patch extends gic_enable_redist so that the redistributor can be configure to assert WakeRequest and hold interrupts as pending. This is useful in suspending the processors. This patch also adds check to make sure GICR_WAKER is accessible when configuring it. Cc: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Signed-off-by: Sudeep Holla <sudeep.holla@arm.com> [maz: removed reference to GICD_CTLR.DS and added read-back of GICR_WAKER to check that it is not RAZ/WI] Signed-off-by: Marc Zyngier <marc.zyngier@arm.com> Acked-by: Marc Zyngier <marc.zyngier@arm.com> Link: https://lkml.kernel.org/r/1409065415-20176-2-git-send-email-sudeep.holla@arm.com Signed-off-by: Jason Cooper <jason@lakedaemon.net>
| | * | Merge branch 'irqchip/broadcom' into irqchip/coreJason Cooper2014-10-023-1/+307
| | |\ \ | | | | | | | | | | | | | | | | | | | | Conflicts: drivers/irqchip/Makefile
| | | * | Documentation: bcm7120-l2: Add Broadcom BCM7120-style L2 bindingFlorian Fainelli2014-09-141-0/+86
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch adds the Device Tree binding document for the Broadcom BCM7120-style Set-top-box Level 2 interrupt controller hardware. We provide some ascii art explaining the different roles and reasons why some properties are introduced to represent that interrupt controller. Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> Link: https://lkml.kernel.org/r/1410309862-27784-3-git-send-email-f.fainelli@gmail.com Signed-off-by: Jason Cooper <jason@lakedaemon.net>
| | | * | irqchip: bcm7120-l2: Add Broadcom BCM7120-style Level 2 interrupt controllerFlorian Fainelli2014-09-142-1/+221
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch adds support for the Level-2 interrupt controller hardware found in Broadcom Set Top Box System-on-a-Chip devices. This interrupt controller is implemented using a single enable register. This interrupt controller is always present on the platforms supported by the irq-brcmstb-l2 driver, hence the reason why both are compiled using the same Kconfig symbol. [jac] removed the following warning: drivers/irqchip/irq-bcm7120-l2.c: In function 'bcm7120_l2_intc_irq_handle': drivers/irqchip/irq-bcm7120-l2.c:49:27: warning: unused variable 'gc' [-Wunused-variable] Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> Link: https://lkml.kernel.org/r/1410309862-27784-2-git-send-email-f.fainelli@gmail.com Signed-off-by: Jason Cooper <jason@lakedaemon.net>
| | * | | Merge branch 'irqchip/atmel' into irqchip/coreJason Cooper2014-10-022-2/+12
| | |\ \ \
| | | * | | irqchip: atmel-aic5: Add sama5d4 supportAlexandre Belloni2014-09-142-1/+11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add sama5d4 support to irq-atmel-aic5. Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com> Link: https://lkml.kernel.org/r/1410536587-24607-2-git-send-email-alexandre.belloni@free-electrons.com Signed-off-by: Jason Cooper <jason@lakedaemon.net>
| | | * | | irqchip: atmel-aic5: The sama5d3 has 48 IRQsAlexandre Belloni2014-09-141-1/+1
| | | |/ / | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The FUSE and RAM controllers don't have any connected IRQs, reducing the number of IRQs to 48. Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com> Acked-by: Boris Brezillon <boris.brezillon@free-electrons.com> Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com> Link: https://lkml.kernel.org/r/1410446511-29477-1-git-send-email-alexandre.belloni@free-electrons.com Signed-off-by: Jason Cooper <jason@lakedaemon.net>
| * | | | Merge tag 'irqchip-core-3.18' of git://git.infradead.org/users/jcooper/linux ↵Thomas Gleixner2014-09-1410113-454396/+436750
| |\| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | into irq/core irqchip core changes for v3.18 - renesas: suspend to RAM, runtime PM, cleanups and DT binding docs - keystone: add new driver - hip04: add Hisilicon HiP04 driver (without touching irq-gic.c) - gic: Use defines instead of magic number, preserve v2 bybass bits - handle_domain_irq: common low level interrupt entry handler
| | * | | Merge branch 'irqchip/handle_domain' into irqchip/coreJason Cooper2014-09-1431-130/+116
| | |\ \ \
| | | * | | openrisc: Get rid of handle_IRQMarc Zyngier2014-09-032-6/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The openrisc irqchip driver has been converted to handle_domain_irq, making it possible to remove the handle_IRQ stub entierely. Signed-off-by: Marc Zyngier <marc.zyngier@arm.com> Acked-by: Stefan Kristiansson <stefan.kristiansson@saunalahti.fi> Link: https://lkml.kernel.org/r/1409047421-27649-27-git-send-email-marc.zyngier@arm.com Signed-off-by: Jason Cooper <jason@lakedaemon.net>
| | | * | | arm64: Get rid of handle_IRQMarc Zyngier2014-09-032-13/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | All the arm64 irqchip drivers have been converted to handle_domain_irq, making it possible to remove the handle_IRQ stub entierely. Signed-off-by: Marc Zyngier <marc.zyngier@arm.com> Acked-by: Catalin Marinas <catalin.marinas@arm.com> Link: https://lkml.kernel.org/r/1409047421-27649-26-git-send-email-marc.zyngier@arm.com Signed-off-by: Jason Cooper <jason@lakedaemon.net>
| | | * | | ARM: omap2: irq: Convert to handle_domain_irqMarc Zyngier2014-09-031-2/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Use the new handle_domain_irq method to handle interrupts. Signed-off-by: Marc Zyngier <marc.zyngier@arm.com> Acked-by: Tony Lindgren <tony@atomide.com> Link: https://lkml.kernel.org/r/1409047421-27649-25-git-send-email-marc.zyngier@arm.com Signed-off-by: Jason Cooper <jason@lakedaemon.net>
| | | * | | ARM: imx: tzic: Convert to handle_domain_irqMarc Zyngier2014-09-031-2/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Use the new handle_domain_irq method to handle interrupts. Signed-off-by: Marc Zyngier <marc.zyngier@arm.com> Acked-by: Shawn Guo <shawn.guo@freescale.com> Link: https://lkml.kernel.org/r/1409047421-27649-24-git-send-email-marc.zyngier@arm.com Signed-off-by: Jason Cooper <jason@lakedaemon.net>
| | | * | | ARM: imx: avic: Convert to handle_domain_irqMarc Zyngier2014-09-031-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Use the new handle_domain_irq method to handle interrupts. Signed-off-by: Marc Zyngier <marc.zyngier@arm.com> Acked-by: Shawn Guo <shawn.guo@freescale.com> Link: https://lkml.kernel.org/r/1409047421-27649-23-git-send-email-marc.zyngier@arm.com Signed-off-by: Jason Cooper <jason@lakedaemon.net>
| | | * | | irqchip: or1k-pic: Convert to handle_domain_irqMarc Zyngier2014-09-031-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Use the new handle_domain_irq method to handle interrupts. Signed-off-by: Marc Zyngier <marc.zyngier@arm.com> Acked-by: Stefan Kristiansson <stefan.kristiansson@saunalahti.fi> Link: https://lkml.kernel.org/r/1409047421-27649-22-git-send-email-marc.zyngier@arm.com Signed-off-by: Jason Cooper <jason@lakedaemon.net>
| | | * | | irqchip: atmel-aic5: Convert to handle_domain_irqMarc Zyngier2014-09-031-3/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Use the new handle_domain_irq method to handle interrupts. Signed-off-by: Marc Zyngier <marc.zyngier@arm.com> Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com> Acked-by: Boris Brezillon <boris.brezillon@free-electrons.com> Link: https://lkml.kernel.org/r/1409047421-27649-21-git-send-email-marc.zyngier@arm.com Signed-off-by: Jason Cooper <jason@lakedaemon.net>
| | | * | | irqchip: atmel-aic: Convert to handle_domain_irqMarc Zyngier2014-09-031-3/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Use the new handle_domain_irq method to handle interrupts. Signed-off-by: Marc Zyngier <marc.zyngier@arm.com> Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com> Acked-by: Boris Brezillon <boris.brezillon@free-electrons.com> Link: https://lkml.kernel.org/r/1409047421-27649-20-git-send-email-marc.zyngier@arm.com Signed-off-by: Jason Cooper <jason@lakedaemon.net>
| | | * | | irqchip: gic-v3: Convert to handle_domain_irqMarc Zyngier2014-09-031-7/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Use the new handle_domain_irq method to handle interrupts. Signed-off-by: Marc Zyngier <marc.zyngier@arm.com> Link: https://lkml.kernel.org/r/1409047421-27649-19-git-send-email-marc.zyngier@arm.com Signed-off-by: Jason Cooper <jason@lakedaemon.net>
| | | * | | irqchip: zevio: Convert to handle_domain_irqMarc Zyngier2014-09-031-2/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Use the new handle_domain_irq method to handle interrupts. Signed-off-by: Marc Zyngier <marc.zyngier@arm.com> Link: https://lkml.kernel.org/r/1409047421-27649-18-git-send-email-marc.zyngier@arm.com Signed-off-by: Jason Cooper <jason@lakedaemon.net>
| | | * | | irqchip: vt8500: Convert to handle_domain_irqMarc Zyngier2014-09-031-3/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Use the new handle_domain_irq method to handle interrupts. Signed-off-by: Marc Zyngier <marc.zyngier@arm.com> Link: https://lkml.kernel.org/r/1409047421-27649-17-git-send-email-marc.zyngier@arm.com Signed-off-by: Jason Cooper <jason@lakedaemon.net>
| | | * | | irqchip: vic: Convert to handle_domain_irqMarc Zyngier2014-09-031-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Use the new handle_domain_irq method to handle interrupts. Signed-off-by: Marc Zyngier <marc.zyngier@arm.com> Link: https://lkml.kernel.org/r/1409047421-27649-16-git-send-email-marc.zyngier@arm.com Signed-off-by: Jason Cooper <jason@lakedaemon.net>
| | | * | | irqchip: versatile-fpga: Convert to handle_domain_irqMarc Zyngier2014-09-031-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Use the new handle_domain_irq method to handle interrupts. Signed-off-by: Marc Zyngier <marc.zyngier@arm.com> Link: https://lkml.kernel.org/r/1409047421-27649-15-git-send-email-marc.zyngier@arm.com Signed-off-by: Jason Cooper <jason@lakedaemon.net>
| | | * | | irqchip: sun4i: Convert to handle_domain_irqMarc Zyngier2014-09-031-3/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Use the new handle_domain_irq method to handle interrupts. Signed-off-by: Marc Zyngier <marc.zyngier@arm.com> Link: https://lkml.kernel.org/r/1409047421-27649-14-git-send-email-marc.zyngier@arm.com Signed-off-by: Jason Cooper <jason@lakedaemon.net>
| | | * | | irqchip: sirfsoc: Convert to handle_domain_irqMarc Zyngier2014-09-031-4/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Use the new handle_domain_irq method to handle interrupts. Signed-off-by: Marc Zyngier <marc.zyngier@arm.com> Link: https://lkml.kernel.org/r/1409047421-27649-13-git-send-email-marc.zyngier@arm.com Signed-off-by: Jason Cooper <jason@lakedaemon.net>
| | | * | | irqchip: s3c24xx: Convert to handle_domain_irqMarc Zyngier2014-09-031-3/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Use the new handle_domain_irq method to handle interrupts. Signed-off-by: Marc Zyngier <marc.zyngier@arm.com> Link: https://lkml.kernel.org/r/1409047421-27649-12-git-send-email-marc.zyngier@arm.com Signed-off-by: Jason Cooper <jason@lakedaemon.net>
| | | * | | irqchip: orion: Convert to handle_domain_irqMarc Zyngier2014-09-031-3/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Use the new handle_domain_irq method to handle interrupts. Signed-off-by: Marc Zyngier <marc.zyngier@arm.com> Link: https://lkml.kernel.org/r/1409047421-27649-11-git-send-email-marc.zyngier@arm.com Signed-off-by: Jason Cooper <jason@lakedaemon.net>
| | | * | | irqchip: mxs: Convert to handle_domain_irqMarc Zyngier2014-09-031-2/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Use the new handle_domain_irq method to handle interrupts. Signed-off-by: Marc Zyngier <marc.zyngier@arm.com> Acked-by: Shawn Guo <shawn.guo@freescale.com> Link: https://lkml.kernel.org/r/1409047421-27649-10-git-send-email-marc.zyngier@arm.com Signed-off-by: Jason Cooper <jason@lakedaemon.net>
| | | * | | irqchip: mmp: Convert to handle_domain_irqMarc Zyngier2014-09-031-6/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Use the new handle_domain_irq method to handle interrupts. Signed-off-by: Marc Zyngier <marc.zyngier@arm.com> Link: https://lkml.kernel.org/r/1409047421-27649-9-git-send-email-marc.zyngier@arm.com Signed-off-by: Jason Cooper <jason@lakedaemon.net>
| | | * | | irqchip: clps711x: Convert to handle_domain_irqMarc Zyngier2014-09-031-11/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Use the new handle_domain_irq method to handle interrupts. Signed-off-by: Marc Zyngier <marc.zyngier@arm.com> Link: https://lkml.kernel.org/r/1409047421-27649-8-git-send-email-marc.zyngier@arm.com Signed-off-by: Jason Cooper <jason@lakedaemon.net>
| | | * | | irqchip: armada-370-xp: Convert to handle_domain_irqMarc Zyngier2014-09-031-9/+10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Use the new handle_domain_irq method to handle interrupts. Signed-off-by: Marc Zyngier <marc.zyngier@arm.com> Link: https://lkml.kernel.org/r/1409047421-27649-7-git-send-email-marc.zyngier@arm.com Signed-off-by: Jason Cooper <jason@lakedaemon.net>
| | | * | | irqchip: gic: Convert to handle_domain_irqMarc Zyngier2014-09-031-2/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Use the new handle_domain_irq method to handle interrupts. Signed-off-by: Marc Zyngier <marc.zyngier@arm.com> Link: https://lkml.kernel.org/r/1409047421-27649-6-git-send-email-marc.zyngier@arm.com Signed-off-by: Jason Cooper <jason@lakedaemon.net>
| | | * | | openrisc: Convert handle_IRQ to use __handle_domain_irqMarc Zyngier2014-09-032-8/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In order to limit code duplication, convert the architecture specific handle_IRQ to use the generic __handle_domain_irq function. Signed-off-by: Marc Zyngier <marc.zyngier@arm.com> Acked-by: Stefan Kristiansson <stefan.kristiansson@saunalahti.fi> Link: https://lkml.kernel.org/r/1409047421-27649-5-git-send-email-marc.zyngier@arm.com Signed-off-by: Jason Cooper <jason@lakedaemon.net>
| | | * | | ARM: Convert handle_IRQ to use __handle_domain_irqMarc Zyngier2014-09-032-18/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In order to limit code duplication, convert the architecture specific handle_IRQ to use the generic __handle_domain_irq function. Signed-off-by: Marc Zyngier <marc.zyngier@arm.com> Link: https://lkml.kernel.org/r/1409047421-27649-4-git-send-email-marc.zyngier@arm.com Signed-off-by: Jason Cooper <jason@lakedaemon.net>
| | | * | | arm64: Convert handle_IRQ to use __handle_domain_irqMarc Zyngier2014-09-032-17/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In order to limit code duplication, convert the architecture specific handle_IRQ to use the generic __handle_domain_irq function. Signed-off-by: Marc Zyngier <marc.zyngier@arm.com> Acked-by: Catalin Marinas <catalin.marinas@arm.com> Link: https://lkml.kernel.org/r/1409047421-27649-3-git-send-email-marc.zyngier@arm.com Signed-off-by: Jason Cooper <jason@lakedaemon.net>
| | | * | | genirq: Add irq_domain-aware core IRQ handlerMarc Zyngier2014-09-033-0/+64
| | | |/ / | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Calling irq_find_mapping from outside a irq_{enter,exit} section is unsafe and produces ugly messages if CONFIG_PROVE_RCU is enabled: If coming from the idle state, the rcu_read_lock call in irq_find_mapping will generate an unpleasant warning: <quote> =============================== [ INFO: suspicious RCU usage. ] 3.16.0-rc1+ #135 Not tainted ------------------------------- include/linux/rcupdate.h:871 rcu_read_lock() used illegally while idle! other info that might help us debug this: RCU used illegally from idle CPU! rcu_scheduler_active = 1, debug_locks = 0 RCU used illegally from extended quiescent state! 1 lock held by swapper/0/0: #0: (rcu_read_lock){......}, at: [<ffffffc00010206c>] irq_find_mapping+0x4c/0x198 </quote> As this issue is fairly widespread and involves at least three different architectures, a possible solution is to add a new handle_domain_irq entry point into the generic IRQ code that the interrupt controller code can call. This new function takes an irq_domain, and calls into irq_find_domain inside the irq_{enter,exit} block. An additional "lookup" parameter is used to allow non-domain architecture code to be replaced by this as well. Interrupt controllers can then be updated to use the new mechanism. This code is sitting behind a new CONFIG_HANDLE_DOMAIN_IRQ, as not all architectures implement set_irq_regs (yes, mn10300, I'm looking at you...). Reported-by: Vladimir Murzin <vladimir.murzin@arm.com> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com> Link: https://lkml.kernel.org/r/1409047421-27649-2-git-send-email-marc.zyngier@arm.com Signed-off-by: Jason Cooper <jason@lakedaemon.net>
| | * | | Merge branch 'irqchip/gic' into irqchip/coreJason Cooper2014-09-143-19/+58
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| | | * | irqchip: gic: Preserve gic V2 bypass bits in cpu ctrl registerFeng Kan2014-08-192-3/+23
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This change is made to preserve the GIC v2 bypass bits in the GIC_CPU_CTRL register (also known as the GICC_CTLR register in spec). This code will preserve all bits configured by the bootloader regarding v2 bypass group bits. In the X-Gene platform, the bypass functionality is not used and bypass bits should not be changed by the kernel gic code as it could lead to incorrect behavior. Signed-off-by: Feng Kan <fkan@apm.com> Reviewed-by: Vinayak Kale <vkale@apm.com> Reviewed-by: Anup Patel <apatel@apm.com> Link: https://lkml.kernel.org/r/1406757419-18729-3-git-send-email-fkan@apm.com Signed-off-by: Jason Cooper <jason@lakedaemon.net>
| | | * | irqchip: gic: Replace hex numbers with defines.Feng Kan2014-08-193-18/+37
| | | |/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This is to cleanup some hex numbers used in the code and replace them with defines to make the code cleaner. Signed-off-by: Feng Kan <fkan@apm.com> Reviewed-by: Anup Patel <apatel@apm.com> Link: https://lkml.kernel.org/r/1406757419-18729-2-git-send-email-fkan@apm.com Signed-off-by: Jason Cooper <jason@lakedaemon.net>
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