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The old dm_request() method used for q->make_request_fn had a branch for
request-based DM support but it isn't needed given that
dm_init_request_based_queue() sets it to the standard blk_queue_bio()
anyway.
Cleanup dm_init_md_queue() to be DM device-type agnostic and have
dm_setup_md_queue() properly finish queue setup based on DM device-type
(bio-based vs request-based).
A followup block patch can be made to remove the export for
blk_queue_bio() now that DM no longer calls it directly.
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
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DM multipath is the only caller of blk_lld_busy() -- which calls a
queue's lld_busy_fn hook. Request-based DM doesn't support stacking
multipath devices so there is no reason to register the lld_busy_fn hook
on a multipath device's queue using blk_queue_lld_busy().
As such, remove functions dm_lld_busy and dm_table_any_busy_target.
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
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There is no need for DM to export a wrapper around the already exported
blk_lld_busy().
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
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__dm_get_module_param() could be useful for future DM module parameters
besides those related to "reserved_ios".
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
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Signed-off-by: Mike Snitzer <snitzer@redhat.com>
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Writeback takes out a lock on the cache block, so will increase the
latency for any concurrent io.
This patch works by placing 2 sentinel objects on each level of the
multiqueues. Every WRITEBACK_PERIOD the oldest sentinel gets moved to
the newest end of the queue level.
When looking for writeback work:
if less than 25% of the cache is clean:
we select the oldest object with the lowest hit count
otherwise:
we select the oldest object that is not past a writeback sentinel.
Signed-off-by: Joe Thornber <ejt@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
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Remove to stop wasting memory.
Signed-off-by: Joe Thornber <ejt@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
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A sentinel object is placed on each level of the multiqueues. When an
object is hit it is requeued behind the sentinel. When the tick is
incremented we iterate through all objects behind the sentinel and
update the hit_count, then reposition the sentinel at the very back.
This saves memory by avoiding tracking the tick explicitly for every
struct entry object in the multiqueues.
Signed-off-by: Joe Thornber <ejt@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
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queue_shift_down() didn't adjust the hit_counts to the new levels, so it
just had the effect of scrambling levels.
Signed-off-by: Joe Thornber <ejt@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
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Small optimisation, now queue_empty() doesn't need to walk all levels of
the multiqueue.
Signed-off-by: Joe Thornber <ejt@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
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Use a single slab cache to allocate a mempool for each dirty-log.
This _should_ eliminate DM's need for io_schedule_timeout() in
mempool_alloc(); so io_schedule() should be sufficient now.
Also, rename struct flush_entry to dm_dirty_log_flush_entry to allow
KMEM_CACHE() to create a meaningful global name for the slab cache.
Also, eliminate some holes in struct log_c by rearranging members.
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Acked-by: Heinz Mauelshagen <heinzm@redhat.com>
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Linux 3.19 commit 69c953c ("lib/lcm.c: lcm(n,0)=lcm(0,n) is 0, not n")
caused blk_stack_limits() to not properly stack queue_limits for stacked
devices (e.g. DM).
Fix this regression by establishing lcm_not_zero() and switching
blk_stack_limits() over to using it.
DM uses blk_set_stacking_limits() to establish the initial top-level
queue_limits that are then built up based on underlying devices' limits
using blk_stack_limits(). In the case of optimal_io_size (io_opt)
blk_set_stacking_limits() establishes a default value of 0. With commit
69c953c, lcm(0, n) is no longer n, which compromises proper stacking of
the underlying devices' io_opt.
Test:
$ modprobe scsi_debug dev_size_mb=10 num_tgts=1 opt_blks=1536
$ cat /sys/block/sde/queue/optimal_io_size
786432
$ dmsetup create node --table "0 100 linear /dev/sde 0"
Before this fix:
$ cat /sys/block/dm-5/queue/optimal_io_size
0
After this fix:
$ cat /sys/block/dm-5/queue/optimal_io_size
786432
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Cc: stable@vger.kernel.org # 3.19+
Acked-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
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Don't assign ->rq_timeout twice.
Signed-off-by: Wei Fang <fangwei1@huawei.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
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blk_mq_alloc_tag_set()
At the beginning of blk_mq_alloc_tag_set(), we have already checked whether
'set->nr_hw_queues' is zero, so here remove this redundant check.
Signed-off-by: Xiaoguang Wang <wangxg.fnst@cn.fujitsu.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC fixes from Olof Johansson:
"The latest and greatest fixes for ARM platform code. Worth pointing
out are:
- Lines-wise, largest is a PXA fix for dealing with interrupts on DT
that was quite broken. It's still newish code so while we could
have held this off, it seemed appropriate to include now
- Some GPIO fixes for OMAP platforms added a few lines. This was
also fixes for code recently added (this release).
- Small OMAP timer fix to behave better with partially upstreamed
platforms, which is quite welcome.
- Allwinner fixes about operating point control, reducing
overclocking in some cases for better stability.
plus a handful of other smaller fixes across the map"
* tag 'armsoc-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
arm64: juno: Fix misleading name of UART reference clock
ARM: dts: sunxi: Remove overclocked/overvoltaged OPP
ARM: dts: sun4i: a10-lime: Override and remove 1008MHz OPP setting
ARM: socfpga: dts: fix spi1 interrupt
ARM: dts: Fix gpio interrupts for dm816x
ARM: dts: dra7: remove ti,hwmod property from pcie phy
ARM: OMAP: dmtimer: disable pm runtime on remove
ARM: OMAP: dmtimer: check for pm_runtime_get_sync() failure
ARM: OMAP2+: Fix socbus family info for AM33xx devices
ARM: dts: omap3: Add missing dmas for crypto
ARM: dts: rockchip: disable gmac by default in rk3288.dtsi
MAINTAINERS: add rockchip regexp to the ARM/Rockchip entry
ARM: pxa: fix pxa interrupts handling in DT
ARM: pxa: Fix typo in zeus.c
ARM: sunxi: Have ARCH_SUNXI select RESET_CONTROLLER for clock driver usage
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https://git.kernel.org/pub/scm/linux/kernel/git/mripard/linux into fixes
Allwinner fixes for 4.0
There's a few fixes to merge for 4.0, one to add a select in the machine
Kconfig option to fix a potential build failure, and two fixing cpufreq related
issues.
* tag 'sunxi-fixes-for-4.0' of https://git.kernel.org/pub/scm/linux/kernel/git/mripard/linux:
ARM: dts: sunxi: Remove overclocked/overvoltaged OPP
ARM: dts: sun4i: a10-lime: Override and remove 1008MHz OPP setting
ARM: sunxi: Have ARCH_SUNXI select RESET_CONTROLLER for clock driver usage
Signed-off-by: Olof Johansson <olof@lixom.net>
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git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into fixes
Fixes for omaps for the -rc cycle:
- Fix a device tree based booting vs legacy booting regression for
omap3 crypto hardware by adding the missing DMA channels.
- Fix /sys/bus/soc/devices/soc0/family for am33xx devices.
- Fix two timer issues that can cause hangs if the timer related
hwmod data is missing like it often initially is for new SoCs.
- Remove pcie hwmods entry from dts as that causes runtime PM to
fail for the PHYs.
- A paper bag type dts configuration fix for dm816x GPIO
interrupts that I just noticed. This is most of the changes
diffstat wise, but as it's a basic feature for connecting
devices and things work otherwise, it should be fixed.
* tag 'fixes-v4.0-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap:
ARM: dts: Fix gpio interrupts for dm816x
ARM: dts: dra7: remove ti,hwmod property from pcie phy
ARM: OMAP: dmtimer: disable pm runtime on remove
ARM: OMAP: dmtimer: check for pm_runtime_get_sync() failure
ARM: OMAP2+: Fix socbus family info for AM33xx devices
ARM: dts: omap3: Add missing dmas for crypto
Signed-off-by: Olof Johansson <olof@lixom.net>
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git://git.rocketboards.org/linux-socfpga-next into fixes
Late fix for v4.0 on the SoCFPGA platform:
- Fix interrupt number for SPI1 interface
* tag 'socfpga_fix_for_v4.0_2' of git://git.rocketboards.org/linux-socfpga-next:
ARM: socfpga: dts: fix spi1 interrupt
Signed-off-by: Olof Johansson <olof@lixom.net>
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The UART reference clock speed is 7273.8 kHz, not 72738 kHz.
Dots aren't usually used in node names even though ePAPR permits
them. However, this can easily be avoided by expressing the
frequency in Hz, not kHz.
This patch changes the name to refclk7273800hz, reflecting the
actual clock speed.
Signed-off-by: Dave Martin <Dave.Martin@arm.com>
Acked-by: Liviu Dudau <Liviu.Dudau@arm.com>
Signed-off-by: Olof Johansson <olof@lixom.net>
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arm: pxa: fixes for v4.0-rc5
There are only 2 fixes, one for the zeus board about the regulator changes,
where a typo prevented the zeus board from having a working can regulator,
and one regression triggered by the interrupts IRQ shift of 16 affecting all
boards.
* tag 'fixes-for-v4.0-rc5' of https://github.com/rjarzmik/linux:
ARM: pxa: fix pxa interrupts handling in DT
ARM: pxa: Fix typo in zeus.c
Signed-off-by: Olof Johansson <olof@lixom.net>
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 fix from Ingo Molnar:
"Fix x86 syscall exit code bug that resulted in spurious non-execution
of TIF-driven user-return worklets, causing big trouble for things
like KVM that rely on user notifiers for correctness of their vcpu
model, causing crashes like double faults"
* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/asm/entry: Check for syscall exit work with IRQs disabled
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull timer fixes from Ingo Molnar:
"Two clocksource driver fixes, and an idle loop RCU warning fix"
* 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
clocksource/drivers/sun5i: Fix cpufreq interaction with sched_clock()
clocksource/drivers: Fix various !CONFIG_HAS_IOMEM build errors
timers/tick/broadcast-hrtimer: Fix suspicious RCU usage in idle loop
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull scheduler fix from Ingo Molnar:
"A single sched/rt corner case fix for RLIMIT_RTIME correctness"
* 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
sched: Fix RLIMIT_RTTIME when PI-boosting to RT
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull perf fix from Ingo Molnar:
"A perf kernel side fix for a fuzzer triggered lockup"
* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
perf: Fix irq_work 'tail' recursion
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull locking fix from Ingo Molnar:
"A module unload lockdep race fix"
* 'locking-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
lockdep: Fix the module unload key range freeing logic
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git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux
Pull parsic fixes from Helge Deller:
"One patch from Mikulas fixes a bug on parisc by artifically
incrementing the counter in pmd_free when the kernel tries to free
the preallocated pmd.
Other than that we now prevent that syscalls gets added without
incrementing __NR_Linux_syscalls and fix the initial pmd setup code
if a default page size greater than 4k has been selected"
* 'parisc-4.0-1' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux:
parisc: Fix pmd code to depend on PT_NLEVELS value, not on CONFIG_64BIT
parisc: mm: don't count preallocated pmds
parisc: Add compile-time check when adding new syscalls
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Pull kvm ppc bugfixes from Marcelo Tosatti.
* git://git.kernel.org/pub/scm/virt/kvm/kvm:
KVM: PPC: Book3S HV: Fix instruction emulation
KVM: PPC: Book3S HV: Endian fix for accessing VPA yield count
KVM: PPC: Book3S HV: Fix spinlock/mutex ordering issue in kvmppc_set_lpcr()
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git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc
Pull ARC fixes from Vineet Gupta:
"We found some issues with signal handling taking down the system. I
know its late, but these are important and all marked for stable.
ARC signal handling related fixes uncovered during recent testing of
NPTL tools"
* tag 'arc-4.0-fixes-part-2' of git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc:
ARC: signal handling robustify
ARC: SA_SIGINFO ucontext regs off-by-one
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git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security
Pull selinux bugfix from James Morris.
Fix broken return value.
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security:
selinux: fix sel_write_enforce broken return value
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Pull watchdog fixes from Wim Van Sebroeck:
- mtk_wdt: signedness bug in mtk_wdt_start()
- imgpdc: Fix NULL pointer dereference during probe and fix the default
heartbeat
* git://www.linux-watchdog.org/linux-watchdog:
watchdog: imgpdc: Fix default heartbeat
watchdog: imgpdc: Fix probe NULL pointer dereference
watchdog: mtk_wdt: signedness bug in mtk_wdt_start()
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git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
Pull sound fixes from Takashi Iwai:
"Three trivial oneliner fixes for HD-audio.
Two are device-specific quirks while one is a generic fix for recent
Realtek codecs"
* tag 'sound-4.0-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
ALSA: hda - Add one more node in the EAPD supporting candidate list
ALSA: hda_intel: apply the Seperate stream_tag for Sunrise Point
ALSA: hda - Add dock support for Thinkpad T450s (17aa:5036)
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into for-linus
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The IMG PDC watchdog driver heartbeat module parameter has no default so
it is initialised to zero. This results in the following warning during
probe:
imgpdc-wdt 2006000.wdt: Initial timeout out of range! setting max timeout
The module parameter description implies that the default value should
be PDC_WDT_DEF_TIMEOUT, which isn't yet used, so initialise it to that.
Also tweak the heartbeat module parameter description for consistency.
Fixes: 93937669e9b5 ("watchdog: ImgTec PDC Watchdog Timer Driver")
Signed-off-by: James Hogan <james.hogan@imgtec.com>
Cc: Ezequiel Garcia <ezequiel.garcia@imgtec.com>
Cc: Naidu Tellapati <Naidu.Tellapati@imgtec.com>
Cc: Jude Abraham <Jude.Abraham@imgtec.com>
Cc: linux-watchdog@vger.kernel.org
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
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The IMG PDC watchdog probe function calls pdc_wdt_stop() prior to
watchdog_set_drvdata(), causing a NULL pointer dereference when
pdc_wdt_stop() retrieves the struct pdc_wdt_dev pointer using
watchdog_get_drvdata() and reads the register base address through it.
Fix by moving the watchdog_set_drvdata() call earlier, to where various
other pdc_wdt->wdt_dev fields are initialised.
Fixes: 93937669e9b5 ("watchdog: ImgTec PDC Watchdog Timer Driver")
Signed-off-by: James Hogan <james.hogan@imgtec.com>
Cc: Ezequiel Garcia <ezequiel.garcia@imgtec.com>
Cc: Naidu Tellapati <Naidu.Tellapati@imgtec.com>
Cc: Jude Abraham <Jude.Abraham@imgtec.com>
Cc: linux-watchdog@vger.kernel.org
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
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"ret" should be signed for the error handling to work correctly. This
doesn't matter much in real life since mtk_wdt_set_timeout() always
succeeds.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Matthias Brugger <matthias.bgg@gmail.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
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Pull drm refcounting fixes from Dave Airlie:
"Here is the complete set of i915 bug/warn/refcounting fixes"
* 'drm-fixes' of git://people.freedesktop.org/~airlied/linux:
drm/i915: Fixup legacy plane->crtc link for initial fb config
drm/i915: Fix atomic state when reusing the firmware fb
drm/i915: Keep ring->active_list and ring->requests_list consistent
drm/i915: Don't try to reference the fb in get_initial_plane_config()
drm: Fixup racy refcounting in plane_force_disable
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git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm
Pull device mapper fix from Mike Snitzer:
"Fix DM core device cleanup regression -- due to a latent race that was
exposed by the bdi changes that were introduced during the 4.0 merge"
* tag 'dm-4.0-fix-2' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm:
dm: fix add_disk() NULL pointer due to race with free_dev()
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git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest
Pull kselftest fix from Shuah Khan.
* tag 'linux-kselftest-4.0-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest:
selftests: Fix build failures when invoked from kselftest target
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git://anongit.freedesktop.org/drm-intel into drm-fixes
This should cover the final warnings in -rc5 with two more backports
from our development branch (drm-intel-next-queued). They're the ones
from Daniel and Damien, with references to the reports.
This is on top of drm-fixes because of the dependency on the two earlier
fixes not yet in Linus' tree.
There's an additional regression fix from Chris.
* tag 'drm-intel-fixes-2015-03-26' of git://anongit.freedesktop.org/drm-intel:
drm/i915: Fixup legacy plane->crtc link for initial fb config
drm/i915: Fix atomic state when reusing the firmware fb
drm/i915: Keep ring->active_list and ring->requests_list consistent
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git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux
Pull s390 fixes from Martin Schwidefsky:
"A couple of bug fixes for s390.
The ftrace comile fix is quite large for a -rc6 release, but it would
be nice to have it in 4.0"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux:
s390/smp: reenable smt after resume
s390/mm: limit STACK_RND_MASK for compat tasks
s390/ftrace: fix compile error if CONFIG_KPROBES is disabled
s390/cpum_sf: add diagnostic sampling event only if it is authorized
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This is a very similar bug in the load detect code fixed in
commit 9128b040eb774e04bc23777b005ace2b66ab2a85
Author: Daniel Vetter <daniel.vetter@ffwll.ch>
Date: Tue Mar 3 17:31:21 2015 +0100
drm/i915: Fix modeset state confusion in the load detect code
But this time around it was the initial fb code that forgot to update
the plane->crtc pointer. Otherwise it's the exact same bug, with the
exact same restrains (any set_config call/ioctl that doesn't disable
the pipe papers over the bug for free, so fairly hard to hit in normal
testing). So if you want the full explanation just go read that one
over there - it's rather long ...
Cc: Matt Roper <matthew.d.roper@intel.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Josh Boyer <jwboyer@fedoraproject.org>
Cc: Jani Nikula <jani.nikula@linux.intel.com>
Reported-and-tested-by: Josh Boyer <jwboyer@fedoraproject.org>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
[Jani: backported to drm-intel-fixes for v4.0-rc]
Reference: http://mid.gmane.org/CA+5PVA7ChbtJrknqws1qvZcbrg1CW2pQAFkSMURWWgyASRyGXg@mail.gmail.com
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
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Right now, we get a warning when taking over the firmware fb:
[drm:drm_atomic_plane_check] FB set but no CRTC
with the following backtrace:
[<ffffffffa010339d>] drm_atomic_check_only+0x35d/0x510 [drm]
[<ffffffffa0103567>] drm_atomic_commit+0x17/0x60 [drm]
[<ffffffffa00a6ccd>] drm_atomic_helper_plane_set_property+0x8d/0xd0 [drm_kms_helper]
[<ffffffffa00f1fed>] drm_mode_plane_set_obj_prop+0x2d/0x90 [drm]
[<ffffffffa00a8a1b>] restore_fbdev_mode+0x6b/0xf0 [drm_kms_helper]
[<ffffffffa00aa969>] drm_fb_helper_restore_fbdev_mode_unlocked+0x29/0x80 [drm_kms_helper]
[<ffffffffa00aa9e2>] drm_fb_helper_set_par+0x22/0x50 [drm_kms_helper]
[<ffffffffa050a71a>] intel_fbdev_set_par+0x1a/0x60 [i915]
[<ffffffff813ad444>] fbcon_init+0x4f4/0x580
That's because we update the plane state with the fb from the firmware, but we
never associate the plane to that CRTC.
We don't quite have the full DRM take over from HW state just yet, so
fake enough of the plane atomic state to pass the checks.
v2: Fix the state on which we set the CRTC in the case we're sharing the
initial fb with another pipe. (Matt)
Signed-off-by: Damien Lespiau <damien.lespiau@intel.com>
Reviewed-by: Matt Roper <matthew.d.roper@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
[Jani: backported to drm-intel-fixes for v4.0-rc]
Reference: http://mid.gmane.org/CA+5PVA7yXH=U757w8V=Zj2U1URG4nYNav20NpjtQ4svVueyPNw@mail.gmail.com
Reference: http://lkml.kernel.org/r/CA+55aFweWR=nDzc2Y=rCtL_H8JfdprQiCimN5dwc+TgyD4Bjsg@mail.gmail.com
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
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We have a HP machine which use the codec node 0x17 connecting the
internal speaker, and from the node capability, we saw the EAPD,
if we don't set the EAPD on for this node, the internal speaker
can't output any sound.
Cc: <stable@vger.kernel.org>
BugLink: https://bugs.launchpad.net/bugs/1436745
Signed-off-by: Hui Wang <hui.wang@canonical.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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The sun5i timer is used as the sched-clock on certain systems, and ever
since we started using cpufreq, the cpu clock (that is one of the
timer's clock indirect parent) now changes as well, along with the
actual sched_clock() rate.
This is not accurate and not desirable.
We can safely remove the sun5i sched-clock on those systems, since we
have other reliable sched_clock() sources in the system.
Tested-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
[ Improved the changelog. ]
Cc: richard@nod.at
Link: http://lkml.kernel.org/r/1427362029-6511-4-git-send-email-daniel.lezcano@linaro.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Fix !CONFIG_HAS_IOMEM related build failures in three clocksource drivers.
The build failures have the pattern of:
drivers/clocksource/sh_cmt.c: In function ‘sh_cmt_map_memory’: drivers/clocksource/sh_cmt.c:920:2:
error: implicit declaration of function ‘ioremap_nocache’ [-Werror=implicit-function-declaration] cmt->mapbase = ioremap_nocache(mem->start, resource_size(mem));
Signed-off-by: Richard Weinberger <richard@nod.at>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Acked-by: Geert Uytterhoeven <geert+renesas@glider.be>
Cc: maxime.ripard@free-electrons.com
Link: http://lkml.kernel.org/r/1427362029-6511-1-git-send-email-daniel.lezcano@linaro.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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If we retire requests last, we may use a later seqno and so clear
the requests lists without clearing the active list, leading to
confusion. Hence we should retire requests first for consistency with
the early return. The order used to be important as the lifecycle for
the object on the active list was determined by request->seqno. However,
the requests themselves are now reference counted removing the
constraint from the order of retirement.
Fixes regression from
commit 1b5a433a4dd967b125131da42b89b5cc0d5b1f57
Author: John Harrison <John.C.Harrison@Intel.com>
Date: Mon Nov 24 18:49:42 2014 +0000
drm/i915: Convert 'i915_seqno_passed' calls into 'i915_gem_request_completed
'
and a
WARNING: CPU: 0 PID: 1383 at drivers/gpu/drm/i915/i915_gem_evict.c:279 i915_gem_evict_vm+0x10c/0x140()
WARN_ON(!list_empty(&vm->active_list))
Identified by updating WATCH_LISTS:
[drm:i915_verify_lists] *ERROR* blitter ring: active list not empty, but no requests
WARNING: CPU: 0 PID: 681 at drivers/gpu/drm/i915/i915_gem.c:2751 i915_gem_retire_requests_ring+0x149/0x230()
WARN_ON(i915_verify_lists(ring->dev))
Note that this is only a problem in evict_vm where the following happens
after a retire_request has cleaned out all requests, but not all active
bo:
- intel_ring_idle called from i915_gpu_idle notices that no requests are
outstanding and immediately returns.
- i915_gem_retire_requests_ring called from i915_gem_retire_requests also
immediately returns when there's no request, still leaving the bo on the
active list.
- evict_vm hits the WARN_ON(!list_empty(&vm->active_list)) after evicting
all active objects that there's still stuff left that shouldn't be
there.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: John Harrison <John.C.Harrison@Intel.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
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The total stream number of Sunrise Point's input and output stream
exceeds 15, which will cause some streams do not work because
of the overflow on SDxCTL.STRM field if using the legacy
stream tag allocation method.
This patch uses the new stream tag allocation method by add
the flag AZX_DCAPS_SEPARATE_STREAM_TAG for Skylake platform.
Signed-off-by: Libin Yang <libin.yang@intel.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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A malicious signal handler / restorer can DOS the system by fudging the
user regs saved on stack, causing weird things such as sigreturn returning
to user mode PC but cpu state still being kernel mode....
Ensure that in sigreturn path status32 always has U bit; any other bogosity
(gargbage PC etc) will be taken care of by normal user mode exceptions mechanisms.
Reproducer signal handler:
void handle_sig(int signo, siginfo_t *info, void *context)
{
ucontext_t *uc = context;
struct user_regs_struct *regs = &(uc->uc_mcontext.regs);
regs->scratch.status32 = 0;
}
Before the fix, kernel would go off to weeds like below:
--------->8-----------
[ARCLinux]$ ./signal-test
Path: /signal-test
CPU: 0 PID: 61 Comm: signal-test Not tainted 4.0.0-rc5+ #65
task: 8f177880 ti: 5ffe6000 task.ti: 8f15c000
[ECR ]: 0x00220200 => Invalid Write @ 0x00000010 by insn @ 0x00010698
[EFA ]: 0x00000010
[BLINK ]: 0x2007c1ee
[ERET ]: 0x10698
[STAT32]: 0x00000000 : <--------
BTA: 0x00010680 SP: 0x5ffe7e48 FP: 0x00000000
LPS: 0x20003c6c LPE: 0x20003c70 LPC: 0x00000000
...
--------->8-----------
Reported-by: Alexey Brodkin <abrodkin@synopsys.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
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