| Commit message (Collapse) | Author | Age |
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'irq-cleanup-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (23 commits)
genirq: Expand generic show_interrupts()
gpio: Fold irq_set_chip/irq_set_handler to irq_set_chip_and_handler
gpio: Cleanup genirq namespace
arm: ep93xx: Add basic interrupt info
arm/gpio: Remove three copies of broken and racy debug code
xtensa: Use generic show_interrupts()
xtensa: Convert genirq namespace
xtensa: Use generic IRQ Kconfig and set GENERIC_HARDIRQS_NO_DEPRECATED
xtensa: Convert s6000 gpio irq_chip to new functions
xtensa: Convert main irq_chip to new functions
um: Use generic show_interrupts()
um: Convert genirq namespace
m32r: Use generic show_interrupts()
m32r: Convert genirq namespace
h8300: Use generic show_interrupts()
h8300: Convert genirq namespace
avr32: Cleanup eic_set_irq_type()
avr32: Use generic show_interrupts()
avr: Cleanup genirq namespace
avr32: Use generic IRQ config, enable GENERIC_HARDIRQS_NO_DEPRECATED
...
Fix up trivial conflict in drivers/gpio/timbgpio.c
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Converted with coccinelle.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Grant Likely <grant.likely@secretlab.ca>
LKML-Reference: <20110324212509.118888535@linutronix.de>
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Converted with coccinelle.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Grant Likely <grant.likely@secretlab.ca>
LKML-Reference: <20110324212509.025730689@linutronix.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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gpiolib plus two gpio implementations in arm fiddle in the guts of
irq_desc in a racy and buggy way. Remove the stuff. I already told the
gpio folks that we can provide that information in a proper way if
necessary.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Grant Likely <grant.likely@secretlab.ca>
LKML-Reference: <20110324212508.931638262@linutronix.de>
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* 'for-linus' of git://git390.marist.edu/pub/scm/linux-2.6:
[S390] cmpxchg: implement cmpxchg64()
[S390] xchg/cmpxchg: move to own header file
[S390] ccwgroup_driver: remove duplicate members
[S390] ccw_bus_type: make it static
[S390] ccw_driver: remove duplicate members
[S390] qdio: prevent handling of buffers if count is zero
[S390] setup: register bss section as resource
[S390] setup: simplify setup_resources()
[S390] wire up sys_syncfs
[S390] wire up sys_clock_adjtime
[S390] wire up sys_open_by_handle_at
[S390] wire up sys_name_to_handle_at
[S390] oprofile: disable hw sampling for CONFIG_32BIT
[S390] early: limit savesys cmd string handling
[S390] early: Fix possible overlapping data buffer
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Remove the owner and name members of struct
ccwgroup_driver and convert all drivers to store
this data in the embedded struct device_driver.
Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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Make ccw_bus_type static. ccw_device drivers have to
use ccw_driver_register.
Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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Remove the owner and name members of struct
ccw_driver and convert all drivers to store
this data in the embedded struct device_driver.
Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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Exit do_QDIO early if the buffer count is zero to prevent side effects
in the following functions.
Signed-off-by: Jan Glauber <jang@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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Signed-off-by: Maxim Levitsky <maximlevitsky@gmail.com>
Acked-by: Alex Dubov <oakad@yahoo.com>
Cc: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Fix the following compile failure:
drivers/media/rc/ite-cir.c: In function 'ite_decode_bytes':
drivers/media/rc/ite-cir.c:190: error: implicit declaration of function 'generic_find_next_le_bit'
drivers/media/rc/ite-cir.c:199: error: implicit declaration of function 'generic_find_next_zero_le_bit'
Caused by commit 620a32bba4a2 ("[media] rc: New rc-based ite-cir driver
for several ITE CIRs") interacting with commit c4945b9ed472
("asm-generic: rename generic little-endian bitops functions").
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Commit ddd588b5dd55 ("oom: suppress nodes that are not allowed from
meminfo on oom kill") moved lib/show_mem.o out of lib/lib.a, which
resulted in build warnings on all architectures that implement their own
versions of show_mem():
lib/lib.a(show_mem.o): In function `show_mem':
show_mem.c:(.text+0x1f4): multiple definition of `show_mem'
arch/sparc/mm/built-in.o:(.text+0xd70): first defined here
The fix is to remove __show_mem() and add its argument to show_mem() in
all implementations to prevent this breakage.
Architectures that implement their own show_mem() actually don't do
anything with the argument yet, but they could be made to filter nodes
that aren't allowed in the current context in the future just like the
generic implementation.
Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Reported-by: James Bottomley <James.Bottomley@hansenpartnership.com>
Suggested-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: David Rientjes <rientjes@google.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6
* 'drm-core-next' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6:
drm/vblank: update recently added vbl interface to be more future proof.
drm radeon: Return -EINVAL on wrong pm sysfs access
drm/radeon/kms: fix hardcoded EDID handling
Revert "drm/i915: Don't save/restore hardware status page address register"
drm/i915: Avoid unmapping pages from a NULL address space
drm/i915: Fix use after free within tracepoint
drm/i915: Restore missing command flush before interrupt on BLT ring
drm/i915: Disable pagefaults along execbuffer relocation fast path
drm/i915: Fix computation of pitch for dumb bo creator
drm/i915: report correct render clock frequencies on SNB
drm/i915/dp: Correct the order of deletion for ghost eDP devices
drm/i915: Fix tiling corruption from pipelined fencing
drm/i915: Re-enable self-refresh
drm/i915: Prevent racy removal of request from client list
drm/i915: skip redundant operations whilst enabling pipes and planes
drm/i915: Remove surplus POSTING_READs before wait_for_vblank
drm/radeon/kms: prefer legacy pll algo for tv-out
drm: check for modesetting on modeset ioctls
drm/kernel: vblank wait on crtc > 1
drm: Fix use-after-free in drm_gem_vm_close()
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This makes the interface a bit cleaner by leaving a single gap in the
vblank bit space instead of creating two gaps.
Suggestions from Michel on mailing list/irc.
Reviewed-by: Michel Dänzer <michel@daenzer.net>
Signed-off-by: Dave Airlie <airlied@redhat.com>
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Throw an error if someone tries to fill this with
wrong data, instead of simply ignoring the input.
Now you get:
echo hello >/sys/../power_method
-bash: echo: write error: Invalid argument
Signed-off-by: Thomas Renninger <trenn@suse.de>
CC: Alexander.Deucher@amd.com
CC: dri-devel@lists.freedesktop.org
Reviewed-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
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On some servers there is a hardcoded EDID provided
in the vbios so that the driver will always see a
display connected even if something like a KVM
prevents traditional means like DDC or load
detection from working properly. Also most
server boards with DVI are not actually DVI, but
DVO connected to a virtual KVM service processor.
If we fail to detect a monitor via DDC or load
detection and a hardcoded EDID is available, use
it.
Additionally, when using the hardcoded EDID, use
a copy of it rather than the actual one stored
in the driver as the detect() and get_modes()
functions may free it if DDC is successful.
This fixes the virtual KVM on several internal
servers.
Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Cc: stable@kernel.org
Signed-off-by: Dave Airlie <airlied@redhat.com>
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* 'intel/drm-intel-fixes' of ../drm-next:
Revert "drm/i915: Don't save/restore hardware status page address register"
drm/i915: Avoid unmapping pages from a NULL address space
drm/i915: Fix use after free within tracepoint
drm/i915: Restore missing command flush before interrupt on BLT ring
drm/i915: Disable pagefaults along execbuffer relocation fast path
drm/i915: Fix computation of pitch for dumb bo creator
drm/i915: report correct render clock frequencies on SNB
drm/i915/dp: Correct the order of deletion for ghost eDP devices
drm/i915: Fix tiling corruption from pipelined fencing
drm/i915: Re-enable self-refresh
drm/i915: Prevent racy removal of request from client list
drm/i915: skip redundant operations whilst enabling pipes and planes
drm/i915: Remove surplus POSTING_READs before wait_for_vblank
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This reverts commit a7a75c8f70d6f6a2f16c9f627f938bbee2d32718.
There are two different variations on how Intel hardware addresses the
"Hardware Status Page". One as a location in physical memory and the
other as an offset into the virtual memory of the GPU, used in more
recent chipsets. (The HWS itself is a cacheable region of memory which
the GPU can write to without requiring CPU synchronisation, used for
updating various details of hardware state, such as the position of
the GPU head in the ringbuffer, the last breadcrumb seqno, etc).
These two types of addresses were updated in different locations of code
- one inline with the ringbuffer initialisation, and the other during
device initialisation. (The HWS page is logically associated with
the rings, and there is one HWS page per ring.) During resume, only the
ringbuffers were being re-initialised along with the virtual HWS page,
leaving the older physical address HWS untouched. This then caused a
hang on the older gen3/4 (915GM, 945GM, 965GM) the first time we tried
to synchronise the GPU as the breadcrumbs were never being updated.
Reported-and-tested-by: Linus Torvalds <torvalds@linux-foundation.org>
Reported-by: Jan Niehusmann <jan@gondor.com>
Reported-and-tested-by: Justin P. Mattock <justinmattock@gmail.com>
Reported-and-tested-by: Michael "brot" Groh <brot@minad.de>
Cc: Zhenyu Wang <zhenyuw@linux.intel.com>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Acked-by: Zhenyu Wang <zhenyuw@linux.intel.com>
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Found by gem_stress.
As we perform retirement from a workqueue, it is possible for us to free
and unbind objects after the last close on the device, and so after the
address space has been torn down and reset to NULL:
BUG: unable to handle kernel NULL pointer dereference at 00000054
IP: [<c1295a20>] mutex_lock+0xf/0x27
*pde = 00000000
Oops: 0002 [#1] SMP
last sysfs file: /sys/module/vt/parameters/default_utf8
Pid: 5, comm: kworker/u:0 Not tainted 2.6.38+ #214
EIP: 0060:[<c1295a20>] EFLAGS: 00010206 CPU: 1
EIP is at mutex_lock+0xf/0x27
EAX: 00000054 EBX: 00000054 ECX: 00000000 EDX: 00012fff
ESI: 00000028 EDI: 00000000 EBP: f706fe20 ESP: f706fe18
DS: 007b ES: 007b FS: 00d8 GS: 0000 SS: 0068
Process kworker/u:0 (pid: 5, ti=f706e000 task=f7060d00 task.ti=f706e000)
Stack:
f5aa3c60 00000000 f706fe74 c107e7df 00000246 dea55380 00000054 f5aa3c60
f706fe44 00000061 f70b4000 c13fff84 00000008 f706fe54 00000000 00000000
00012f00 00012fff 00000028 c109e575 f6b36700 00100000 00000000 f706fe90
Call Trace:
[<c107e7df>] unmap_mapping_range+0x7d/0x1e6
[<c109e575>] ? mntput_no_expire+0x52/0xb6
[<c11c12f6>] i915_gem_release_mmap+0x49/0x58
[<c11c3449>] i915_gem_object_unbind+0x4c/0x125
[<c11c353f>] i915_gem_free_object_tail+0x1d/0xdb
[<c11c55a2>] i915_gem_free_object+0x3d/0x41
[<c11a6be2>] ? drm_gem_object_free+0x0/0x27
[<c11a6c07>] drm_gem_object_free+0x25/0x27
[<c113c3ca>] kref_put+0x39/0x42
[<c11c0a59>] drm_gem_object_unreference+0x16/0x18
[<c11c0b15>] i915_gem_object_move_to_inactive+0xba/0xbe
[<c11c0c87>] i915_gem_retire_requests_ring+0x16e/0x1a5
[<c11c3645>] i915_gem_retire_requests+0x48/0x63
[<c11c36ac>] i915_gem_retire_work_handler+0x4c/0x117
[<c10385d1>] process_one_work+0x140/0x21b
[<c103734c>] ? __need_more_worker+0x13/0x2a
[<c10373b1>] ? need_to_create_worker+0x1c/0x35
[<c11c3660>] ? i915_gem_retire_work_handler+0x0/0x117
[<c1038faf>] worker_thread+0xd4/0x14b
[<c1038edb>] ? worker_thread+0x0/0x14b
[<c103be1b>] kthread+0x68/0x6d
[<c103bdb3>] ? kthread+0x0/0x6d
[<c12970f6>] kernel_thread_helper+0x6/0x10
Code: 00 e8 98 fe ff ff 5d c3 55 89 e5 3e 8d 74 26 00 ba 01 00 00 00 e8
84 fe ff ff 5d c3 55 89 e5 53 8d 64 24 fc 3e 8d 74 26 00 89 c3 <f0> ff
08 79 05 e8 ab ff ff ff 89 e0 25 00 e0 ff ff 89 43 10 58
EIP: [<c1295a20>] mutex_lock+0xf/0x27 SS:ESP 0068:f706fe18
CR2: 0000000000000054
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Keith Packard <keithp@keithp.com>
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Detected by scripts/coccinelle/free/kfree.cocci.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Keith Packard <keithp@keithp.com>
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We always skipped flushing the BLT ring if the request flush did not
include the RENDER domain. However, this neglects that we try to flush
the COMMAND domain after every batch and before the breadcrumb interrupt
(to make sure the batch is indeed completed prior to the interrupt
firing and so insuring CPU coherency). As a result of the missing flush,
incoherency did indeed creep in, most notable when using lots of command
buffers and so potentially rewritting an active command buffer (i.e.
the GPU was still executing from it even though the following interrupt
had already fired and the request/buffer retired).
As all ring->flush routines now have the same preconditions, de-duplicate
and move those checks up into i915_gem_flush_ring().
Fixes gem_linear_blit.
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=35284
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Tested-by: mengmeng.meng@intel.com
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Along the fast path for relocation handling, we attempt to copy directly
from the user data structures whilst holding our mutex. This causes
lockdep to warn about circular lock dependencies if we need to pagefault
the user pages. [Since when handling a page fault on a mmapped bo, we
need to acquire the struct mutex whilst already holding the mm
semaphore, it is then verboten to acquire the mm semaphore when already
holding the struct mutex. The likelihood of the user passing in the
relocations contained in a GTT mmaped bo is low, but conceivable for
extreme pathology.] In order to force the mm to return EFAULT rather
than handle the pagefault, we therefore need to disable pagefaults
across the relocation fast path.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: stable@kernel.org
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
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Cc: Dave Airlie <airlied@linux.ie>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
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Fix up the debug file to report the right frequencies. On SNB, we program
the PCU with a frequency ratio, which is multiplied by 100MHz on the CPU
side. But GFX only runs at half that, so report it as such to avoid
confusion.
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Keith Packard <keithp@keithp.com>
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The order of the calls does matter indeed. Swapping the call order of
intel_dp_destroy() and intel_dp_encoder_destroy() fixes the problem.
This is because i2c_del_adapter unregisters the device which parent is
intel_connector, and connectors are removed in intel_dp_destroy(). Thus
intel_dp_encoder_destroy() must be called before intel_dp_destroy().
Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=24822
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Keith Packard <keithp@keithp.com>
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... even though it was disabled. A mistake in the handling of fence reuse
caused us to skip the vital delay of waiting for the object to finish
rendering before changing the register. This resulted in us changing the
fence register whilst the bo was active and so causing the blits to
complete using the wrong stride or even the wrong tiling. (Visually the
effect is that small blocks of the screen look like they have been
interlaced). The fix is to wait for the GPU to finish using the memory
region pointed to by the fence before changing it.
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=34584
Cc: Andy Whitcroft <apw@canonical.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
[Note for 2.6.38-stable, we need to reintroduce the interruptible passing]
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Tested-by: Dave Airlie <airlied@linux.ie>
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A broken implementation of is_pot() prevented the detection of when a
singular pipe was enabled. Eric Anholt pointed out the existence of
is_power_of_2() so use that instead of our broken code!
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=35402
Signed-off-by: Yuanhan Liu <yuanhan.liu@intel.com>
Tested-by: xunx.fang@intel.com
Reviewed-by: Keith Packard <keithp@keithp.com>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
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When i915_gem_retire_requests_ring calls i915_gem_request_remove_from_client,
the client_list for that request may already be removed in i915_gem_release.
So we may call twice list_del(&request->client_list), resulting in an
oops like this report:
[126167.230394] BUG: unable to handle kernel paging request at 00100104
[126167.230699] IP: [<f8c2ce44>] i915_gem_retire_requests_ring+0xd4/0x240 [i915]
[126167.231042] *pdpt = 00000000314c1001 *pde = 0000000000000000
[126167.231314] Oops: 0002 [#1] SMP
[126167.231471] last sysfs file: /sys/devices/LNXSYSTM:00/device:00/PNP0C0A:00/power_supply/BAT1/current_now
[126167.231901] Modules linked in: snd_seq_dummy nls_utf8 isofs btrfs zlib_deflate libcrc32c ufs qnx4 hfsplus hfs minix ntfs vfat msdos fat jfs xfs exportfs reiserfs cryptd aes_i586 aes_generic binfmt_misc vboxnetadp vboxnetflt vboxdrv parport_pc ppdev snd_hda_codec_hdmi snd_hda_codec_conexant snd_hda_intel snd_hda_codec snd_hwdep arc4 snd_pcm snd_seq_midi snd_rawmidi snd_seq_midi_event snd_seq uvcvideo videodev snd_timer snd_seq_device joydev iwlagn iwlcore mac80211 snd cfg80211 soundcore i915 drm_kms_helper snd_page_alloc psmouse drm serio_raw i2c_algo_bit video lp parport usbhid hid sky2 sdhci_pci ahci sdhci libahci
[126167.232018]
[126167.232018] Pid: 1101, comm: Xorg Not tainted 2.6.38-6-generic-pae #34-Ubuntu Gateway MC7833U /
[126167.232018] EIP: 0060:[<f8c2ce44>] EFLAGS: 00213246 CPU: 0
[126167.232018] EIP is at i915_gem_retire_requests_ring+0xd4/0x240 [i915]
[126167.232018] EAX: 00200200 EBX: f1ac25b0 ECX: 00000040 EDX: 00100100
[126167.232018] ESI: f1a2801c EDI: e87fc060 EBP: ef4d7dd8 ESP: ef4d7db0
[126167.232018] DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068
[126167.232018] Process Xorg (pid: 1101, ti=ef4d6000 task=f1ba6500 task.ti=ef4d6000)
[126167.232018] Stack:
[126167.232018] f1a28000 f1a2809c f1a28094 0058bd97 f1aa2400 f1a2801c 0058bd7b 0058bd85
[126167.232018] f1a2801c f1a28000 ef4d7e38 f8c2e995 ef4d7e30 ef4d7e60 c14d1ebc f6b3a040
[126167.232018] f1522cc0 000000db 00000000 f1ba6500 ffffffa1 00000000 00000001 f1a29214
[126167.232018] Call Trace:
Unfortunately the call trace reported was cut, but looking at debug
symbols the crash is at __list_del, when probably list_del is called
twice on the same request->client_list, as the dereferenced value is
LIST_POISON1 + 4, and by looking more at the debug symbols before
list_del call it should have being called by
i915_gem_request_remove_from_client
And as I can see in the code, it seems we indeed have the possibility
to remove a request->client_list twice, which would cause the above,
because we do list_del(&request->client_list) on both
i915_gem_request_remove_from_client and i915_gem_release
As Chris Wilson pointed out, it's indeed the case:
"(...) I had thought that the actual insertion/deletion was serialised
under the struct mutex and the intention of the spinlock was to protect
the unlocked list traversal during throttling. However, I missed that
i915_gem_release() is also called without struct mutex and so we do need
the double check for i915_gem_request_remove_from_client()."
This change does the required check to avoid the duplicate remove of
request->client_list.
Bugzilla: http://bugs.launchpad.net/bugs/733780
Cc: stable@kernel.org # 2.6.38
Signed-off-by: Herton Ronaldo Krzesinski <herton.krzesinski@canonical.com>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
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If the pipe or plane is already enabled, then we do not need to enable
it again and can skip the delay. Similarly if it is already disabled
when we want to disable it, we can also skip it.
This fixes a regression from b24e717988, which caused the LVDS
output on one PineView machine to become corrupt after changing
orientation several times.
References: https://bugs.freedesktop.org/show_bug.cgi?id=34601
Cc: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Keith Packard <keithp@keithp.com>
Tested-by: mengmeng.meng@intel.com
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... as wait_for_vblank (and friends) will do a flush of the MMIO writes
anyway.
References: https://bugs.freedesktop.org/show_bug.cgi?id=34601
Cc: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Keith Packard <keithp@keithp.com>
Reviewed-by: Jesse Barnes <jbarnes@virtuousgeek.org>
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ntsc seems to work fine with either algo, some
pal TVs seem pickier.
Fixes:
https://bugzilla.kernel.org/show_bug.cgi?id=30832
Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Cc: stable@kernel.org
Signed-off-by: Dave Airlie <airlied@redhat.com>
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Noticed this while working on some other things, helps if we check for modeset
enabled on modesetting ioctls.
Cc: stable@kernel.org
Signed-off-by: Dave Airlie <airlied@redhat.com>
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Below is a patch against drm-next branch of 2.6.38-rc8+ kernel that adds
the capability to wait on vblank events for CRTCs that are greater than 1
and thus cannot be represented with primary/secondary flags in the legacy
interface. It was discussed on the dri-devel list in these two threads:
http://lists.freedesktop.org/archives/dri-devel/2011-March/009009.html
http://lists.freedesktop.org/archives/dri-devel/2011-March/009025.html
This patch extends the interface to drm_wait_vblank ioctl so that crtc>1
can be represented. It also adds a new capability to drm_getcap ioctl so
that the user space can check whether the new interface to drm_wait_vblank
is supported (and fall back to the legacy interface if not)
Signed-off-by: Ilija Hadzic <ihadzic@research.bell-labs.com>
Reviewed-by: Mario Kleiner <mario.kleiner at tuebingen.mpg.de>
Acked-by: Mario Kleiner <mario.kleiner at tuebingen.mpg.de>
Reviewed-by: Alex Deucher <alexdeucher@gmail.com>
Tested-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
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As we may release the last reference, we need to store the device in a
local variable in order to unlock afterwards.
[ 60.140768] BUG: unable to handle kernel paging request at 6b6b6b9f
[ 60.140973] IP: [<c1536d11>] __mutex_unlock_slowpath+0x5a/0x111
[ 60.141014] *pdpt = 0000000024a54001 *pde = 0000000000000000
[ 60.141014] Oops: 0002 [#1] PREEMPT SMP
[ 60.141014] last sysfs file: /sys/devices/LNXSYSTM:00/device:00/PNP0A08:00/PNP0C0A:00/power_supply/BAT0/voltage_now
[ 60.141014] Modules linked in: uvcvideo ath9k pegasus ath9k_common ath9k_hw hid_egalax ath3k joydev asus_laptop sparse_keymap battery input_polldev
[ 60.141014]
[ 60.141014] Pid: 771, comm: meego-ux-daemon Not tainted 2.6.37.2-7.1 #1 EXOPC EXOPG06411/EXOPG06411
[ 60.141014] EIP: 0060:[<c1536d11>] EFLAGS: 00010046 CPU: 0
[ 60.141014] EIP is at __mutex_unlock_slowpath+0x5a/0x111
[ 60.141014] EAX: 00000100 EBX: 6b6b6b9b ECX: e9b4a1b0 EDX: e4a4e580
[ 60.141014] ESI: db162558 EDI: 00000246 EBP: e480be50 ESP: e480be44
[ 60.141014] DS: 007b ES: 007b FS: 00d8 GS: 0000 SS: 0068
[ 60.141014] Process meego-ux-daemon (pid: 771, ti=e480a000 task=e9b4a1b0 task.ti=e480a000)
[ 60.141014] Stack:
[ 60.141014] e4a4e580 db162558 f5a2f838 e480be58 c1536dd0 e480be68 c125ab1b db162558
[ 60.141014] db1624e0 e480be78 c10ba071 db162558 f760241c e480be94 c10bb0bc 000155fe
[ 60.141014] f760241c f5a2f838 f5a2f8c8 00000000 e480bea4 c1037c24 00000000 f5a2f838
[ 60.141014] Call Trace:
[ 60.141014] [<c1536dd0>] ? mutex_unlock+0x8/0xa
[ 60.141014] [<c125ab1b>] ? drm_gem_vm_close+0x39/0x3d
[ 60.141014] [<c10ba071>] ? remove_vma+0x2d/0x58
[ 60.141014] [<c10bb0bc>] ? exit_mmap+0x126/0x13f
[ 60.141014] [<c1037c24>] ? mmput+0x37/0x9a
[ 60.141014] [<c10d450d>] ? exec_mmap+0x178/0x19c
[ 60.141014] [<c1537f85>] ? _raw_spin_unlock+0x1d/0x36
[ 60.141014] [<c10d4eb0>] ? flush_old_exec+0x42/0x75
[ 60.141014] [<c1104442>] ? load_elf_binary+0x32a/0x922
[ 60.141014] [<c10d3f76>] ? search_binary_handler+0x200/0x2ea
[ 60.141014] [<c10d3ecf>] ? search_binary_handler+0x159/0x2ea
[ 60.141014] [<c1104118>] ? load_elf_binary+0x0/0x922
[ 60.141014] [<c10d56b2>] ? do_execve+0x1ff/0x2e6
[ 60.141014] [<c100970e>] ? sys_execve+0x2d/0x55
[ 60.141014] [<c1002a5a>] ? ptregs_execve+0x12/0x18
[ 60.141014] [<c10029dc>] ? sysenter_do_call+0x12/0x3c
[ 60.141014] [<c1530000>] ? init_centaur+0x9c/0x1ba
[ 60.141014] Code: c1 00 75 0f ba 38 01 00 00 b8 8c 3a 6c c1 e8 cc 2e b0 ff 9c 58 8d 74 26 00 89 c7 fa 90 8d 74 26 00 e8 d2 b4 b2 ff b8 00 01 00 00 <f0> 66 0f c1 43 04 38 e0 74 07 f3 90 8a 43 04 eb f5 83 3d 64 ef
[ 60.141014] EIP: [<c1536d11>] __mutex_unlock_slowpath+0x5a/0x111 SS:ESP 0068:e480be44
[ 60.141014] CR2: 000000006b6b6b9f
Reported-by: Rusty Lynch <rusty.lynch@intel.com>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: stable@kernel.org
Signed-off-by: Dave Airlie <airlied@redhat.com>
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* 'for-2.6.39/core' of git://git.kernel.dk/linux-2.6-block: (65 commits)
Documentation/iostats.txt: bit-size reference etc.
cfq-iosched: removing unnecessary think time checking
cfq-iosched: Don't clear queue stats when preempt.
blk-throttle: Reset group slice when limits are changed
blk-cgroup: Only give unaccounted_time under debug
cfq-iosched: Don't set active queue in preempt
block: fix non-atomic access to genhd inflight structures
block: attempt to merge with existing requests on plug flush
block: NULL dereference on error path in __blkdev_get()
cfq-iosched: Don't update group weights when on service tree
fs: assign sb->s_bdi to default_backing_dev_info if the bdi is going away
block: Require subsystems to explicitly allocate bio_set integrity mempool
jbd2: finish conversion from WRITE_SYNC_PLUG to WRITE_SYNC and explicit plugging
jbd: finish conversion from WRITE_SYNC_PLUG to WRITE_SYNC and explicit plugging
fs: make fsync_buffers_list() plug
mm: make generic_writepages() use plugging
blk-cgroup: Add unaccounted time to timeslice_used.
block: fixup plugging stubs for !CONFIG_BLOCK
block: remove obsolete comments for blkdev_issue_zeroout.
blktrace: Use rq->cmd_flags directly in blk_add_trace_rq.
...
Fix up conflicts in fs/{aio.c,super.c}
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After the stack plugging introduction, these are called lockless.
Ensure that the counters are updated atomically.
Signed-off-by: Shaohua Li<shaohua.li@intel.com>
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
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MD and DM create a new bio_set for every metadevice. Each bio_set has an
integrity mempool attached regardless of whether the metadevice is
capable of passing integrity metadata. This is a waste of memory.
Instead we defer the allocation decision to MD and DM since we know at
metadevice creation time whether integrity passthrough is needed or not.
Automatic integrity mempool allocation can then be removed from
bioset_create() and we make an explicit integrity allocation for the
fs_bio_set.
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Reported-by: Zdenek Kabelac <zkabelac@redhat.com>
Acked-by: Mike Snitzer <snizer@redhat.com>
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
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Conflicts:
block/blk-core.c
block/blk-flush.c
drivers/md/raid1.c
drivers/md/raid10.c
drivers/md/raid5.c
fs/nilfs2/btnode.c
fs/nilfs2/mdt.c
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
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With the plugging now being explicitly controlled by the
submitter, callers need not pass down unplugging hints
to the block layer. If they want to unplug, it's because they
manually plugged on their own - in which case, they should just
unplug at will.
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
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Code has been converted over to the new explicit on-stack plugging,
and delay users have been converted to use the new API for that.
So lets kill off the old plugging along with aops->sync_page().
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
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It was always abuse to reuse the plugging infrastructure for this,
convert it to the (new) real API for delaying queueing a bit. A
default delay of 3 msec is defined, to match the previous
behaviour.
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
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It was always abuse to reuse the plugging infrastructure for this,
convert it to the (new) real API for delaying queueing a bit.
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
Acked-by: David S. Miller <davem@davemloft.net>
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Convert two staging drivers - blkvsc_drv and cyasblkdev_block - from
->media_changed() to ->check_events(). The former always indicated
media changed while the latter always indicated media not changed.
Not sure what the drivers are trying to achieve but keep the original
behavior.
Signed-off-by: Tejun Heo <tj@kernel.org>
Acked-by: Greg Kroah-Hartman <gregkh@suse.de>
Cc: Jens Axboe <axboe@kernel.dk>
Cc: Kay Sievers <kay.sievers@vrfy.org>
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Convert from ->media_changed() to ->check_events().
pktcdvd needs to forward all event related operations to the
underlying device. Forward ->check_events() instead of
->media_changed() and inherit disk->[async_]events.
Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Jens Axboe <axboe@kernel.dk>
Cc: Kay Sievers <kay.sievers@vrfy.org>
Cc: Peter Osterlund <petero2@telia.com>
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umem doesn't implement media changed detection and there's no need to
implement dummy callback anymore. Remove it.
Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Jens Axboe <axboe@kernel.dk>
Cc: Kay Sievers <kay.sievers@vrfy.org>
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Convert from ->media_changed() to ->check_events().
s390/tape_block buffers media changed state and clears it on
revalidation. It will behave correctly with kernel event polling.
Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Jens Axboe <axboe@kernel.dk>
Cc: Kay Sievers <kay.sievers@vrfy.org>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
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Convert from ->media_changed() to ->check_events().
i2o_block buffers media changed state and clears it after reporting.
It will behave correctly with kernel event polling.
Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Jens Axboe <axboe@kernel.dk>
Cc: Kay Sievers <kay.sievers@vrfy.org>
Cc: Markus Lidel <Markus.Lidel@shadowconnect.com>
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Convert from ->media_changed() to ->check_events().
xsysace buffers media changed state and clears it on revalidation. It
will behave correctly with kernel event polling.
Signed-off-by: Tejun Heo <tj@kernel.org>
Acked-by: Grant Likely <grant.likely@secretlab.ca>
Cc: Jens Axboe <axboe@kernel.dk>
Cc: Kay Sievers <kay.sievers@vrfy.org>
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Convert from ->media_changed() to ->check_events().
ub buffers media changed state and clears it on revalidation. It will
behave correctly with kernel event polling.
Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Jens Axboe <axboe@kernel.dk>
Cc: Kay Sievers <kay.sievers@vrfy.org>
Cc: Pete Zaitcev <zaitcev@redhat.com>
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Convert from ->media_changed() to ->check_events().
Both swim and swim3 buffer media changed state and clear it on
revalidation. They will behave correctly with kernel event polling.
Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Jens Axboe <axboe@kernel.dk>
Cc: Kay Sievers <kay.sievers@vrfy.org>
Cc: Laurent Vivier <laurent@lvivier.info>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
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