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* tracing: Remove unused fields/variablesjolsa@redhat.com2009-07-18
| | | | | | | Signed-off-by: Jiri Olsa <jolsa@redhat.com> Cc: rostedt@goodmis.org LKML-Reference: <1247773468-11594-2-git-send-email-jolsa@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* Merge branch 'linus' into tracing/coreIngo Molnar2009-07-18
|\ | | | | | | | | | | Merge reason: tracing/core was on an older, pre-rc1 base. Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * Merge branch 'drm-fixes' of ↵Linus Torvalds2009-07-18
| |\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6 * 'drm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6: drm: Move a dereference below a NULL test fb/intelfb: conflict with DRM_I915 and hide by default drm/ttm: fix misplaced parentheses drm/via: Fix vblank IRQ on VIA hardware. drm: drm_gem, check kzalloc retval drm: drm_debugfs, check kmalloc retval drm/radeon: add some missing pci ids
| | * drm: Move a dereference below a NULL testJulia Lawall2009-07-15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | If the NULL test is necessary, then the dereference should be moved below the NULL test. The semantic patch that makes this change is as follows: (http://www.emn.fr/x-info/coccinelle/) // <smpl> @@ type T; expression E; identifier i,fld; statement S; @@ - T i = E->fld; + T i; ... when != E when != i if (E == NULL) S + i = E->fld; // </smpl> Signed-off-by: Julia Lawall <julia@diku.dk> Signed-off-by: Dave Airlie <airlied@linux.ie>
| | * fb/intelfb: conflict with DRM_I915 and hide by defaultJesse Barnes2009-07-15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Users get confused by this driver. It's really a special purpose embedded driver, and causes a lot of problems if enabled. So hide it under EMBEDDED by default, and make sure it doesn't get enabled with the i915 DRM driver. Dave, I'm hoping you can feed this to Linus through your tree. It's appropriate for 2.6.31 I think. Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org> Signed-off-by: Dave Airlie <airlied@linux.ie>
| | * drm/ttm: fix misplaced parenthesesRoel Kluin2009-07-15
| | | | | | | | | | | | | | | | | | Signed-off-by: Roel Kluin <roel.kluin@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Dave Airlie <airlied@linux.ie>
| | * drm/via: Fix vblank IRQ on VIA hardware.Simon Farnsworth2009-07-15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | via_enable_vblank wasn't setting the VBlank enable bit - instead, it was masking out the rest of the register. At the same time, fix via_disable_vblank to clear the VBlank enable bit. Signed-off-by: Dave Airlie <airlied@linux.ie>
| | * drm: drm_gem, check kzalloc retvalJiri Slaby2009-07-15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Check kzalloc retval against NULL in drm_gem_object_alloc and bail out appropriately. While at it merge the fail paths and jump to them by gotos at the end of the function. Signed-off-by: Jiri Slaby <jirislaby@gmail.com> Signed-off-by: Dave Airlie <airlied@linux.ie>
| | * drm: drm_debugfs, check kmalloc retvalJiri Slaby2009-07-15
| | | | | | | | | | | | | | | | | | | | | | | | Check kmalloc return value in drm_debugfs_create_files and bail out appropriately if the pointer is NULL. Signed-off-by: Jiri Slaby <jirislaby@gmail.com> Signed-off-by: Dave Airlie <airlied@linux.ie>
| | * drm/radeon: add some missing pci idsAlex Deucher2009-07-15
| | | | | | | | | | | | | | | | | | | | | Also, fix ordering for a couple others Signed-off-by: Alex Deucher <alexdeucher@gmail.com> Signed-off-by: Dave Airlie <airlied@linux.ie>
| * | Merge branch 'release' of ↵Linus Torvalds2009-07-17
| |\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/fyu/linux-2.6 * 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/fyu/linux-2.6: Revert "Neither asm/types.h nor linux/types.h is required for arch/ia64/include/asm/fpu.h" Add dma_debug_init() for ia64 Fix ia64 compilation IS_ERR and PTE_ERR errors.
| | * | Revert "Neither asm/types.h nor linux/types.h is required for ↵Aurelien Jarno2009-07-17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | arch/ia64/include/asm/fpu.h" asm/fpu.h uses the __IA64_UL macro which is declared in asm/types.h, so this include is really required. Without it, GNU libc fails to build. This reverts commit 2678c07b07ac2076675e5d57653bdf02e9af1950. Signed-off-by: Aurelien Jarno <aurelien@aurel32.net> Acked-by: Fenghua Yu <fenghua.yu@intel.com>
| | * | Add dma_debug_init() for ia64fujita2009-07-17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The commit 9916219579d078c80377dd3988c2cc213536d868 was supposed to add CONFIG_DMA_API_DEBUG support to IA64 however I forgot to add dma_debug_init(). Signed-off-by: fujita <fujita@tulip.osrg.net> Acked-by: Fenghua Yu <fenghua.yu@intel.com>
| | * | Fix ia64 compilation IS_ERR and PTE_ERR errors.Fenghua Yu2009-07-17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When building ia64 kernel with CONFIG_XEN_SYS_HYPERVISOR, compiler reports errors: drivers/xen/sys-hypervisor.c: In function ‘uuid_show’: drivers/xen/sys-hypervisor.c:125: error: implicit declaration of function ‘IS_ERR’ drivers/xen/sys-hypervisor.c:126: error: implicit declaration of function ‘PTR_ERR’ This patch fixes the errors. Signed-off-by: Fenghua Yu <fenghua.yu@intel.com> Acked-by: Isaku Yamahata <yamahata@valinux.co.jp>
| * | | Merge branch 'for-linus' of ↵Linus Torvalds2009-07-17
| |\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6 * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6: x86/pci: insert ioapic resource before assigning unassigned resources
| | * | | x86/pci: insert ioapic resource before assigning unassigned resourcesYinghai Lu2009-07-10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Stephen reported that his DL585 G2 needed noapic after 2.6.22 (?) Dann bisected it down to: commit 30a18d6c3f1e774de656ebd8ff219d53e2ba4029 Date: Tue Feb 19 03:21:20 2008 -0800 x86: multi pci root bus with different io resource range, on 64-bit It turns out that: 1. that AMD-based systems have two HT chains. 2. BIOS doesn't allocate resources for BAR 6 of devices under 8132 etc 3. that multi-peer-root patch will try to split root resources to peer root resources according to PCI conf of NB 4. PCI core assigns unassigned resources, but they overlap with BARs that are used by ioapic addr of io4 and 8132. The reason: at that point ioapic address are not inserted yet. Solution is to insert ioapic resources into the tree a bit earlier. Reported-by: Stephen Frost <sfrost@snowman.net> Reported-and-Tested-by: dann frazier <dannf@hp.com> Signed-off-by: Yinghai Lu <yinghai@kernel.org> Cc: stable@kernel.org Signed-off-by: Jesse Barnes <jbarnes@jbarnes-g45.(none)>
| * | | | Merge branch 'for-linus' of ↵Linus Torvalds2009-07-17
| |\ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6 * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6: ALSA: riptide - proper handling of pci_register_driver for joystick sound: usb-audio: add workaround for Blue Microphones devices ALSA: hda_intel: more strict alc880_parse_auto_config dig_nid checking ASoC: Fix NULL pointer dereference in __pxa2xx_pcm_hw_free
| | * \ \ \ Merge branch 'fix/usb-audio' into for-linusTakashi Iwai2009-07-16
| | |\ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | * fix/usb-audio: sound: usb-audio: add workaround for Blue Microphones devices
| | | * | | | sound: usb-audio: add workaround for Blue Microphones devicesClemens Ladisch2009-07-15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Blue Microphones USB devices have an alternate setting that sends two channels of data to the computer. Unfortunately, the descriptors of that altsetting have a wrong channel setting, which means that any recorded data from such a device has twice the sample rate from what would be expected. This patch adds a workaround to ignore that altsetting. Since these devices have only one actual channel, no data is lost. Signed-off-by: Clemens Ladisch <clemens@ladisch.de> Cc: <stable@kernel.org> Signed-off-by: Takashi Iwai <tiwai@suse.de>
| | * | | | | Merge branch 'fix/misc' into for-linusTakashi Iwai2009-07-16
| | |\ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * fix/misc: ALSA: riptide - proper handling of pci_register_driver for joystick
| | | * | | | | ALSA: riptide - proper handling of pci_register_driver for joystickJaswinder Singh Rajput2009-07-15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | We need to check returning error for pci_register_driver(&joystick_driver) On failure, we should unregister formerly registered audio drivers This also fixed the compiler warning : CC [M] sound/pci/riptide/riptide.o sound/pci/riptide/riptide.c: In function ‘alsa_card_riptide_init’: sound/pci/riptide/riptide.c:2200: warning: ignoring return value of ‘__pci_register_driver’, declared with attribute warn_unused_result Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
| | * | | | | | Merge branch 'fix/hda' into for-linusTakashi Iwai2009-07-16
| | |\ \ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * fix/hda: ALSA: hda_intel: more strict alc880_parse_auto_config dig_nid checking
| | | * | | | | | ALSA: hda_intel: more strict alc880_parse_auto_config dig_nid checkingJaroslav Kysela2009-07-10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | On some IbexPeak systems with ALC889A errors like "azx_get_response timeout, switching to polling mode: last cmd=0xaf9f000b" are produced, because non-existent codec #10 is wrongly accessed. The problem is that snd_hda_get_connections() returns out-of-range result for NID 0x1c (something like 0xf8f9 or 0xffff). This patch adds a check to alc880_parse_auto_config() to avoid using of this out-of-range NIDs. A better fix maybe to improve snd_hda_get_connections() routine to check for valid NID ranges if NIDs are expected as result. Signed-off-by: Jaroslav Kysela <perex@perex.cz> Signed-off-by: Takashi Iwai <tiwai@suse.de>
| | * | | | | | | Merge branch 'fix/asoc' into for-linusTakashi Iwai2009-07-16
| | |\ \ \ \ \ \ \ | | | |_|_|/ / / / | | |/| | | | | | | | | | | | | | | | | | | | | | | | * fix/asoc: ASoC: Fix NULL pointer dereference in __pxa2xx_pcm_hw_free
| | | * | | | | | ASoC: Fix NULL pointer dereference in __pxa2xx_pcm_hw_freeDaniel Mack2009-07-09
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Check for rtd->params->drcmr != NULL before accessing it. Signed-off-by: Daniel Mack <daniel@caiaq.de> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
| * | | | | | | | Merge git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-for-linusLinus Torvalds2009-07-17
| |\ \ \ \ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-for-linus: virtio_net: Sync header with qemu virtio-pci: correctly unregister root device on error virtio_blk: ioctl return value fix virtio_blk: don't bounce highmem requests lguest: restrict CPUID to avoid perf counter wrmsr lguest: remove unnecessary forward struct declaration lguest: fix journey
| | * | | | | | | | virtio_net: Sync header with qemuAlex Williamson2009-07-17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Qemu added support for a few extra RX modes that Linux doesn't currently make use of. Sync the headers to maintain consistency. Signed-off-by: Alex Williamson <alex.williamson@hp.com> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
| | * | | | | | | | virtio-pci: correctly unregister root device on errorMark McLoughlin2009-07-17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | If pci_register_driver() fails we're incorrectly unregistering the root device with device_unregister() rather than root_device_unregister(). Reported-by: Don Zickus <dzickus@redhat.com> Signed-off-by: Mark McLoughlin <markmc@redhat.com> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
| | * | | | | | | | virtio_blk: ioctl return value fixChristoph Hellwig2009-07-17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Block driver ioctl methods must return ENOTTY and not -ENOIOCTLCMD if they expect the block layer to handle generic ioctls. This triggered a BLKROSET failure in xfsqa #200. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
| | * | | | | | | | virtio_blk: don't bounce highmem requestsChristoph Hellwig2009-07-17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | By default a block driver bounces highmem requests, but virtio-blk is perfectly fine with any request that fit into it's 64 bit addressing scheme, mapped in the kernel virtual space or not. Besides improving performance on highmem systems this also makes the reproducible oops in __bounce_end_io go away (but hiding the real cause). Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
| | * | | | | | | | lguest: restrict CPUID to avoid perf counter wrmsrRusty Russell2009-07-17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Avoid the following: [ 0.012093] WARNING: at arch/x86/kernel/apic/apic.c:249 native_apic_write_dummy+0x2f/0x40() Rather than chase each new cpuid-detected feature, just lie about the highest valid CPUID so this code is never run. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
| | * | | | | | | | lguest: remove unnecessary forward struct declarationDavide Libenzi2009-07-17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | While fixing lg.h to drop the fwd declaration, I noticed there's another one ;) Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
| | * | | | | | | | lguest: fix journeyMatias Zabaljauregui2009-07-17
| | | |_|_|_|_|/ / | | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | fix: "make Guest" was complaining about duplicated G:032 Signed-off-by: Matias Zabaljauregui <zabaljauregui@gmail.com> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
| * | | | | | | | Merge branch 'tracing-fixes-for-linus' of ↵Linus Torvalds2009-07-17
| |\ \ \ \ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'tracing-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: tracing/function: Fix the return value of ftrace_trace_onoff_callback()
| | * | | | | | | | tracing/function: Fix the return value of ftrace_trace_onoff_callback()Xiao Guangrong2009-07-16
| | |/ / / / / / / | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | ftrace_trace_onoff_callback() will return an error even if we do the right operation, for example: # echo _spin_*:traceon:10 > set_ftrace_filter -bash: echo: write error: Invalid argument # cat set_ftrace_filter #### all functions enabled #### _spin_trylock_bh:traceon:count=10 _spin_unlock_irq:traceon:count=10 _spin_unlock_bh:traceon:count=10 _spin_lock_irq:traceon:count=10 _spin_unlock:traceon:count=10 _spin_trylock:traceon:count=10 _spin_unlock_irqrestore:traceon:count=10 _spin_lock_irqsave:traceon:count=10 _spin_lock_bh:traceon:count=10 _spin_lock:traceon:count=10 We want to set _spin_*:traceon:10 to set_ftrace_filter, it complains with "Invalid argument", but the operation is successful. This is because ftrace_process_regex() returns the number of functions that matched the pattern. If the number is not 0, this value is returned by ftrace_regex_write() whereas we want to return the number of bytes virtually written. Also the file offset pointer is not updated in this case. If the number of matched functions is lower than the number of bytes written by the user, this results to a reprocessing of the string given by the user with a lower size, leading to a malformed ftrace regex and then a -EINVAL returned. So, this patch fixes it by returning 0 if no error occured. The fix also applies on 2.6.30 Signed-off-by: Xiao Guangrong <xiaoguangrong@cn.fujitsu.com> Reviewed-by: Li Zefan <lizf@cn.fujitsu.com> Cc: stable@kernel.org Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
| * / / / / / / / tty_port: Fix return on interrupted useAlan Cox2009-07-17
| |/ / / / / / / | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Whoops.. fortunately not many people use this yet. Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| * | | | | | | Merge branch 'sched-fixes-for-linus' of ↵Linus Torvalds2009-07-16
| |\ \ \ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/peterz/linux-2.6-sched * 'sched-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/peterz/linux-2.6-sched: sched: Fix bug in SCHED_IDLE interaction with group scheduling sched: Fix rt_rq->pushable_tasks initialization in init_rt_rq() sched: Reset sched stats on fork() sched_rt: Fix overload bug on rt group scheduling sched: Documentation/sched-rt-group: Fix style issues & bump version
| | * | | | | | | sched: Fix bug in SCHED_IDLE interaction with group schedulingPaul Turner2009-07-11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | One of the isolation modifications for SCHED_IDLE is the unitization of sleeper credit. However the check for this assumes that the sched_entity we're placing always belongs to a task. This is potentially not true with group scheduling and leaves us rummaging randomly when we try to pull the policy. Signed-off-by: Paul Turner <pjt@google.com> Cc: peterz@infradead.org LKML-Reference: <alpine.DEB.1.00.0907101649570.29914@kitami.corp.google.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| | * | | | | | | sched: Fix rt_rq->pushable_tasks initialization in init_rt_rq()Fabio Checconi2009-07-10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | init_rt_rq() initializes only rq->rt.pushable_tasks, and not the pushable_tasks field of the passed rt_rq. The plist is not used uninitialized since the only pushable_tasks plists used are the ones of root rt_rqs; anyway reinitializing the list on every group creation corrupts the root plist, losing its previous contents. Signed-off-by: Fabio Checconi <fabio@gandalf.sssup.it> Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> LKML-Reference: <20090615185638.GK21741@gandalf.sssup.it> CC: Gregory Haskins <ghaskins@novell.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| | * | | | | | | sched: Reset sched stats on fork()Lucas De Marchi2009-07-10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The sched_stat fields are currently not reset upon fork. Ingo's recent commit 6c594c21fcb02c662f11c97be4d7d2b73060a205 did reset nr_migrations, but it didn't reset any of the others. This patch resets all sched_stat fields on fork. Signed-off-by: Lucas De Marchi <lucas.de.marchi@gmail.com> Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> LKML-Reference: <193b0f820907090457s7a3662f4gcdecdc22fcae857b@mail.gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| | * | | | | | | sched_rt: Fix overload bug on rt group schedulingPeter Zijlstra2009-07-10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Fixes an easily triggerable BUG() when setting process affinities. Make sure to count the number of migratable tasks in the same place: the root rt_rq. Otherwise the number doesn't make sense and we'll hit the BUG in set_cpus_allowed_rt(). Also, make sure we only count tasks, not groups (this is probably already taken care of by the fact that rt_se->nr_cpus_allowed will be 0 for groups, but be more explicit) Tested-by: Thomas Gleixner <tglx@linutronix.de> CC: stable@kernel.org Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Acked-by: Gregory Haskins <ghaskins@novell.com> LKML-Reference: <1247067476.9777.57.camel@twins> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| | * | | | | | | sched: Documentation/sched-rt-group: Fix style issues & bump versionWolfram Sang2009-06-21
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - add missing closing bracket - fix two 80-chars issues (as the rest of the document adheres to it) - bump a reference to kernel version, so the document does not feel aged Signed-off-by: Wolfram Sang <w.sang@pengutronix.de> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> LKML-Reference: <1245580359-4465-1-git-send-email-w.sang@pengutronix.de> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * | | | | | | | Merge branch 'timers-fixes-for-linus' of ↵Linus Torvalds2009-07-16
| |\ \ \ \ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'timers-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: timer stats: fix quick check optimization
| | * | | | | | | | timer stats: fix quick check optimizationHeiko Carstens2009-07-10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git commit 507e1231 "timer stats: Optimize by adding quick check to avoid function calls" added one wrong check so that one unnecessary function call isn't elimated. time_stats_account_hrtimer() checks if timer->start_pid isn't initialized in order to find out if timer_stats_update_stats() should be called. However start_pid is initialized with -1 instead of 0, so that the function call always happens. Check timer->start_site like in timer_stats_account_timer() to fix this. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
| * | | | | | | | | Merge branch 'merge' of ↵Linus Torvalds2009-07-16
| |\ \ \ \ \ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc * 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc: powerpc: Fix another bug in move of altivec code to vector.S powerpc: Fix booke user_disable_single_step()
| | * | | | | | | | | powerpc: Fix another bug in move of altivec code to vector.SAndreas Schwab2009-07-15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When moving load_up_altivec to vector.S a typo in a comment caused a thinko setting the wrong variable. Signed-off-by: Andreas Schwab <schwab@linux-m68k.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
| | * | | | | | | | | powerpc: Fix booke user_disable_single_step()Dave Kleikamp2009-07-15
| | | |_|_|_|_|_|_|/ | | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | On booke processors, gdb is seeing spurious SIGTRAPs when setting a watchpoint. user_disable_single_step() simply quits when the DAC is non-zero. It should be clearing the DBCR0_IC and DBCR0_BT bits from the dbcr0 register and TIF_SINGLESTEP from the thread flag. Signed-off-by: Dave Kleikamp <shaggy@linux.vnet.ibm.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
| * | | | | | | | | n_tty: Fix echo raceAlan Cox2009-07-16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | If a tty in N_TTY mode with echo enabled manages to get itself into a state where - echo characters are pending - FASYNC is enabled - tty_write_wakeup is called from either - a device write path (pty) - an IRQ (serial) then it either deadlocks or explodes taking a mutex in the IRQ path. On the serial side it is almost impossible to reproduce because you have to go from a full serial port to a near empty one with echo characters pending. The pty case happens to have become possible to trigger using emacs and ptys, the pty changes having created a scenario which shows up this bug. The code path is n_tty:process_echoes() (takes mutex) tty_io:tty_put_char() pty:pty_write (or serial paths) tty_wakeup (from pty_write or serial IRQ) n_tty_write_wakeup() process_echoes() *KABOOM* Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| * | | | | | | | | tty: nozomi, fix tty refcounting bugJiri Slaby2009-07-16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Don't forget to drop a tty refererence on fail paths in receive_data(). Signed-off-by: Jiri Slaby <jirislaby@gmail.com> Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| * | | | | | | | | vt: drop bootmem/slab memory distinctionJohannes Weiner2009-07-16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Bootmem is not used for the vt screen buffer anymore as slab is now available at the time the console is initialized. Get rid of the now superfluous distinction between slab and bootmem, it's always slab. This also fixes a kmalloc leak which Catalin described thusly: Commit a5f4f52e ("vt: use kzalloc() instead of the bootmem allocator") replaced the alloc_bootmem() with kzalloc() but didn't set vc_kmalloced to 1 and the memory block is later leaked. The corresponding kmemleak trace: unreferenced object 0xdf828000 (size 8192): comm "swapper", pid 0, jiffies 4294937296 backtrace: [<c006d473>] __save_stack_trace+0x17/0x1c [<c000d869>] log_early+0x55/0x84 [<c01cfa4b>] kmemleak_alloc+0x33/0x3c [<c006c013>] __kmalloc+0xd7/0xe4 [<c00108c7>] con_init+0xbf/0x1b8 [<c0010149>] console_init+0x11/0x20 [<c0008797>] start_kernel+0x137/0x1e4 Signed-off-by: Johannes Weiner <hannes@cmpxchg.org> Reviewed-by: Pekka Enberg <penberg@cs.helsinki.fi> Tested-by: Catalin Marinas <catalin.marinas@arm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Alan Cox <alan@lxorguk.ukuu.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
generated by cgit v1.2.2 (git 2.25.0) at 2024-11-08 14:50:31 -0500