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We're now left with a status bit that is never set and a few
other leftovers.
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
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Also change the signature of the power functions that won't
receive d0i3=true anymore.
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
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This variable read, but never set. Remove it.
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
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Now that d0i3 is dead, this function can't be called from d0i3
flows. Change its signature and make it static.
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
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Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
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This is not needed anymore
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
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As part of the d0i3 removal.
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
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For runtime PM to work with d0i3 code, a lot of integration work needs
to be done with the platform (e.g. the out-of-band wake up interrupt)
and we currently don't have any platforms where this integration
happened. So, this code has been pretty much stale for a while and
when someone enables it, it just breaks things.
Therefore, to simplify the code base and make sure no one enables this
by mistake, we will remove the whole code.
This is only the very start, much more work is needed.
Remove the places where we check iwl_mvm_is_d0i3_supported
but leave all the refs, those will be removed in a different
patch.
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
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When printing a TX, add to the print the length of the frame.
That will help with BSEP (buffer status report poll) tests.
Signed-off-by: Shaul Triebitz <shaul.triebitz@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
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Use the actual length of channels array and not the max capable length.
Signed-off-by: Beker Ayala <ayala.beker@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
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add support to print ldbg command in mvm and xvt mode
Signed-off-by: Shahar S Matityahu <shahar.s.matityahu@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
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Support the new DBGC_SUSPEND_RESUME command to change the recording state.
Signed-off-by: Shahar S Matityahu <shahar.s.matityahu@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
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The op mode should stop the debug recording and not the transport layer.
Rename iwl_fwrt_stop_device into iwl_fw_dbg_stop_sync and move the debug
stop recording to it.
Signed-off-by: Shahar S Matityahu <shahar.s.matityahu@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
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The recording functions are quite big to be inline and the driver should
expose only the stop and restart functions that are allowed to be used
rather then the internal helper functions. Move the functions from the
header file.
Signed-off-by: Shahar S Matityahu <shahar.s.matityahu@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
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These static functions are only used after their definition,
so we don't need the forward declarations.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
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In case that there are OBSS that do not know how to properly
interpret 26-tone RU OFDMA transmissions, instruct the FW not
to use such transmissions.
The check is currently only performed upon association.
Signed-off-by: Ilan Peer <ilan.peer@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
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If mvm->fwrt.cur_fw_img != IWL_UCODE_INIT, then
rfkill_safe_init_done must be true since
rfkill_safe_init_done is set to true before we start to load
the runtime image.
Remove the redundant condition.
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
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The newer targets don't support the DQA enablement command
and will return error status, while older targets need it.
The feature is defined by the corresponding TLV.
Send the command only if the TLV is enabled.
Signed-off-by: Ilia Lin <ilia.lin@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
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Start supporting API version 49 for 22000 series.
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
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/sys/devices/.../power/runtime_status is introduced by commit c92445fadb91
("PM / Runtime: Add sysfs debug files"). Then commit 0fcb4eef8294 ("PM /
Runtime: Make runtime_status attribute not debug-only (v. 2)") made the
runtime_status attribute available without CONFIG_PM_ADVANCED_DEBUG.
This adds missing runtime_status ABI document.
Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/maz/arm-platforms into irq/core
Pull irqchip updates for Linux 5.4 from Marc Zyngier:
- Large GICv3 updates to support new PPI and SPI ranges
- Conver all alloc_fwnode() users to use PAs instead of VAs
- Add support for Marvell's MMP3 irqchip
- Add support for Amlogic Meson SM1
- Various cleanups and fixes
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This notebook has 6 built in speakers for 5.1 surround support, however
only two got autodetected and have also not been assigned correctly.
This patch enables all speakers and also fixes muting when headphones are
plugged in.
The speaker layout is as follows:
pin 0x15 Front Left / Front Right
pin 0x18 Front Center / Subwoofer
pin 0x1b Rear Left / Rear Right (Surround)
The quirk will be enabled automatically on this hardware, but can also be
activated manually via the model=aspire-ethos module parameter.
Caveat: pin 0x1b is shared between headphones jack and surround speakers.
When headphones are plugged in, the surround speakers get muted
automatically by the hardware, however all other speakers remain
unmuted. Currently it's not possible to make use of the generic automute
function in the driver, because such shared pins are not supported.
If we would change the pin settings to identify the pin as headphones,
the surround channel and thus the ability to select 5.1 profiles would
get lost.
This quirk solves the above problem by monitoring jack state of 0x1b and
by connecting/disconnecting all remaining speaker pins when something
gets plugged in or unplugged from the headphones jack port.
Signed-off-by: Sergey Bostandzhyan <jin@mediatomb.cc>
Link: https://lore.kernel.org/r/20190906093343.GA7640@xn--80adja5bqm.su
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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Add Sasha Levin as Microsoft's process ambassador.
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Link: https://lore.kernel.org/r/20190906095852.23568-1-sashal@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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The previous merge of v5.3-rc7 was struggle enough, now it
gave rise to new errors and now I fix those too.
Fixes: 151a41014bff ("Merge tag 'v5.3-rc7' into devel")
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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When booting with ACPI, the Geni Serial Engine is not set as the I2C/SPI
parent and thus, the wrapper (parent device) is unassigned. This causes
the kernel to crash with a null dereference error.
Link: https://lore.kernel.org/r/20190905082555.15020-1-lee.jones@linaro.org
Fixes: 8bc529b25354 ("soc: qcom: geni: Add support for ACPI")
Acked-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Reviewed-by: Stephen Boyd <sboyd@kernel.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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mt76 patches for 5.4
* beacon tx fix for mt76x02
* sparse/checkpatch warning fixes
* DFS pattern detector for mt7615 (DFS channels not enabled yet)
* CSA support for mt7615
* mt7615 cleanup/fixes
* mt7615 rate control improvements
* usb fixes
* mt7615 powersave buffering fix
* new device support for mt76x0
* support for more ciphers in mt7615
* watchdog time fixes
* smart carrier sense on mt7615
* survey support on mt7615
* multiple interfaces on mt76x02u
* calibration data fix for mt7615
* fix for sending BAR after disassoc
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After the conversion to lock-less dma-api call the
increase_address_space() function can be called without any
locking. Multiple CPUs could potentially race for increasing
the address space, leading to invalid domain->mode settings
and invalid page-tables. This has been happening in the wild
under high IO load and memory pressure.
Fix the race by locking this operation. The function is
called infrequently so that this does not introduce
a performance regression in the dma-api path again.
Reported-by: Qian Cai <cai@lca.pw>
Fixes: 256e4621c21a ('iommu/amd: Make use of the generic IOVA allocator')
Signed-off-by: Joerg Roedel <jroedel@suse.de>
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Boris suggests to make a local label (prepend ".L") to these functions
to eliminate them from the symbol table. These are functions with very
local names and really should not be visible anywhere.
Note that objtool won't see these functions anymore (to generate ORC
debug info). But all the functions are not annotated with ENDPROC, so
they won't have objtool's attention anyway.
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Signed-off-by: Borislav Petkov <bp@suse.de>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Cao jin <caoj.fnst@cn.fujitsu.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Steve Winslow <swinslow@gmail.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Wei Huang <wei@redhat.com>
Cc: x86-ml <x86@kernel.org>
Cc: Xiaoyao Li <xiaoyao.li@linux.intel.com>
Link: https://lkml.kernel.org/r/20190906075550.23435-2-jslaby@suse.cz
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When devices are attached to the amd_iommu in a kdump kernel, the old device
table entries (DTEs), which were copied from the crashed kernel, will be
overwritten with a new domain number. When the new DTE is written, the IOMMU
is told to flush the DTE from its internal cache--but it is not told to flush
the translation cache entries for the old domain number.
Without this patch, AMD systems using the tg3 network driver fail when kdump
tries to save the vmcore to a network system, showing network timeouts and
(sometimes) IOMMU errors in the kernel log.
This patch will flush IOMMU translation cache entries for the old domain when
a DTE gets overwritten with a new domain number.
Signed-off-by: Stuart Hayes <stuart.w.hayes@gmail.com>
Fixes: 3ac3e5ee5ed5 ('iommu/amd: Copy old trans table from old kernel')
Signed-off-by: Joerg Roedel <jroedel@suse.de>
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bogus_64_magic is only a dead-end loop. There is no need for an
out-of-order function (and unannotated local label), so just handle it
in-place and also store 0xbad-m-a-g-i-c to %rcx beforehand, in case
someone is inspecting registers.
Here a qemu+gdb example:
Remote debugging using localhost:1235
wakeup_long64 () at arch/x86/kernel/acpi/wakeup_64.S:26
26 jmp 1b
(gdb) info registers
rax 0x123456789abcdef0 1311768467463790320
rbx 0x0 0
rcx 0xbad6d61676963 3286910041024867
^^^^^^^^^^^^^^^
[ bp: Add the gdb example. ]
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Signed-off-by: Borislav Petkov <bp@suse.de>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Len Brown <lenb@kernel.org>
Cc: linux-pm@vger.kernel.org
Cc: Pavel Machek <pavel@ucw.cz>
Cc: "Rafael J. Wysocki" <rjw@rjwysocki.net>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: x86-ml <x86@kernel.org>
Link: https://lkml.kernel.org/r/20190906075550.23435-1-jslaby@suse.cz
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When do coccicheck, I get this error:
spatch -D report --no-show-diff --very-quiet --cocci-file
./scripts/coccinelle/api/platform_get_irq.cocci --include-headers
--dir . -I ./arch/x86/include -I ./arch/x86/include/generated -I ./include
-I ./arch/x86/include/uapi -I ./arch/x86/include/generated/uapi
-I ./include/uapi -I ./include/generated/uapi
--include ./include/linux/kconfig.h --jobs 192 --chunksize 1
minus: parse error:
File "./scripts/coccinelle/api/platform_get_irq.cocci", line 24, column 9, charpos = 355
around = '\(',
whole content = if ( ret \( < \| <= \) 0 )
In commit e56476897448 ("fpga: Remove dev_err() usage
after platform_get_irq()") log, I found the semantic patch,
it fix this issue.
Fixes: 98051ba2b28b ("coccinelle: Add script to check for platform_get_irq() excessive prints")
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Acked-by: Julia Lawall <julia.lawall@lip6.fr>
Link: https://lore.kernel.org/r/20190906033006.17616-1-yuehaibing@huawei.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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to fix kexec relocation errors
The last change to this Makefile caused relocation errors when loading
a kdump kernel. Restore -mcmodel=large (not -mcmodel=kernel),
-ffreestanding, and -fno-zero-initialized-bsss, without reverting to
the former practice of resetting KBUILD_CFLAGS.
Purgatory.ro is a standalone binary that is not linked against the
rest of the kernel. Its image is copied into an array that is linked
to the kernel, and from there kexec relocates it wherever it desires.
With the previous change to compiler flags, the error "kexec: Overflow
in relocation type 11 value 0x11fffd000" was encountered when trying
to load the crash kernel. This is from kexec code trying to relocate
the purgatory.ro object.
From the error message, relocation type 11 is R_X86_64_32S. The
x86_64 ABI says:
"The R_X86_64_32 and R_X86_64_32S relocations truncate the
computed value to 32-bits. The linker must verify that the
generated value for the R_X86_64_32 (R_X86_64_32S) relocation
zero-extends (sign-extends) to the original 64-bit value."
This type of relocation doesn't work when kexec chooses to place the
purgatory binary in memory that is not reachable with 32 bit
addresses.
The compiler flag -mcmodel=kernel allows those type of relocations to
be emitted, so revert to using -mcmodel=large as was done before.
Also restore the -ffreestanding and -fno-zero-initialized-bss flags
because they are appropriate for a stand alone piece of object code
which doesn't explicitly zero the bss, and one other report has said
undefined symbols are encountered without -ffreestanding.
These identical compiler flag changes need to happen for every object
that becomes part of the purgatory.ro object, so gather them together
first into PURGATORY_CFLAGS_REMOVE and PURGATORY_CFLAGS, and then
apply them to each of the objects that have C source. Do not apply
any of these flags to kexec-purgatory.o, which is not part of the
standalone object but part of the kernel proper.
Tested-by: Vaibhav Rustagi <vaibhavrustagi@google.com>
Tested-by: Andreas Smas <andreas@lonelycoder.com>
Signed-off-by: Steve Wahl <steve.wahl@hpe.com>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: None
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: clang-built-linux@googlegroups.com
Cc: dimitri.sivanich@hpe.com
Cc: mike.travis@hpe.com
Cc: russ.anderson@hpe.com
Fixes: b059f801a937 ("x86/purgatory: Use CFLAGS_REMOVE rather than reset KBUILD_CFLAGS")
Link: https://lkml.kernel.org/r/20190905202346.GA26595@swahl-linux
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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git://anongit.freedesktop.org/drm/drm-misc into drm-fixes
drm-misc-fixes for v5.3 final:
- Make ingenic panel type DPI insteado f unknown.
- Fixes for command line parser modes.
Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/606d87b2-1840-c893-eb30-d6c471c9e50a@linux.intel.com
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git://people.freedesktop.org/~thomash/linux into drm-fixes
Single vmwgfx double free fix.
Signed-off-by: Dave Airlie <airlied@redhat.com>
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If we disable the compiler's auto-initialization feature, if
-fplugin-arg-structleak_plugin-byref or -ftrivial-auto-var-init=pattern
are disabled, arch_hw_breakpoint may be used before initialization after:
9a4903dde2c86 ("perf/hw_breakpoint: Split attribute parse and commit")
On our ARM platform, the struct step_ctrl in arch_hw_breakpoint, which
used to be zero-initialized by kzalloc(), may be used in
arch_install_hw_breakpoint() without initialization.
Signed-off-by: Mark-PK Tsai <mark-pk.tsai@mediatek.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Alix Wu <alix.wu@mediatek.com>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: YJ Chiang <yj.chiang@mediatek.com>
Link: https://lkml.kernel.org/r/20190906060115.9460-1-mark-pk.tsai@mediatek.com
[ Minor edits. ]
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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The commit 473d12f7638c
("iio: hid-sensor-attributes: Convert to use int_pow()")
converted to use generic int_pow() helper. Though, the generic one returns
64-bit value and, in cases when it is used as divisor, it compels 64-bit
division from compiler.
In order to fix this, introduce a temporary 32-bit variable to hold the result
of int_pow() and use it as divisor afterwards.
In couple of cases, replace int_pow() with a predefined unit factors for time
and frequency.
Fixes: 473d12f7638c ("iio: hid-sensor-attributes: Convert to use int_pow()")
Reported-by: kbuild test robot <lkp@intel.com>
Reported-by: Nathan Chancellor <natechancellor@gmail.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Link: https://lore.kernel.org/r/20190905112759.13035-1-andriy.shevchenko@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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git://people.freedesktop.org/~gabbayo/linux into char-misc-next
Oded writes:
This tag contains the following changes for kernel 5.4:
- Create an additional char device per PCI device. The new char device
allows any application to query the device for stats, information, idle
state and more. This is needed to support system/monitoring
applications, while also allowing the deep-learning application to send
work to the ASIC through the main (original) char device.
- Fix possible kernel crash in case user supplies a smaller-than-required
buffer to the DEBUG IOCTL.
- Expose the device to userspace only after initialization was done, to
prevent a race between the initialization and user submitting workloads.
- Add uapi, as part of INFO IOCTL, to allow user to query the device
utilization rate.
- Add uapi, as part of INFO IOCTL, to allow user to retrieve aggregate H/W
events, i.e. counting H/W events from the loading of the driver.
- Register to the HWMON subsystem with the board's name, to allow the
user to prepare a custom sensor file per board.
- Use correct macros for endian swapping.
- Improve error printing in multiple places.
- Small bug fixes.
* tag 'misc-habanalabs-next-2019-09-05' of git://people.freedesktop.org/~gabbayo/linux: (30 commits)
habanalabs: correctly cast variable to __le32
habanalabs: show correct id in error print
habanalabs: stop using the acronym KMD
habanalabs: display card name as sensors header
habanalabs: add uapi to retrieve aggregate H/W events
habanalabs: add uapi to retrieve device utilization
habanalabs: Make the Coresight timestamp perpetual
habanalabs: explicitly set the queue-id enumerated numbers
habanalabs: print to kernel log when reset is finished
habanalabs: replace __le32_to_cpu with le32_to_cpu
habanalabs: replace __cpu_to_le32/64 with cpu_to_le32/64
habanalabs: Handle HW_IP_INFO if device disabled or in reset
habanalabs: Expose devices after initialization is done
habanalabs: improve security in Debug IOCTL
habanalabs: use default structure for user input in Debug IOCTL
habanalabs: Add descriptive name to PSOC app status register
habanalabs: Add descriptive names to PSOC scratch-pad registers
habanalabs: create two char devices per ASIC
habanalabs: change device_setup_cdev() to be more generic
habanalabs: maintain a list of file private data objects
...
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The result of kmalloc() should have been checked ahead of below statement:
pqp = (struct bau_pq_entry *)vp;
Move BUG_ON(!vp) before above statement.
Signed-off-by: Austin Kim <austindh.kim@gmail.com>
Cc: Dimitri Sivanich <dimitri.sivanich@hpe.com>
Cc: Hedi Berriche <hedi.berriche@hpe.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mike Travis <mike.travis@hpe.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Russ Anderson <russ.anderson@hpe.com>
Cc: Steve Wahl <steve.wahl@hpe.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: allison@lohutok.net
Cc: andy@infradead.org
Cc: armijn@tjaldur.nl
Cc: bp@alien8.de
Cc: dvhart@infradead.org
Cc: gregkh@linuxfoundation.org
Cc: hpa@zytor.com
Cc: kjlu@umn.edu
Cc: platform-driver-x86@vger.kernel.org
Link: https://lkml.kernel.org/r/20190905232951.GA28779@LGEARND20B15
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Update properties for newly added Airmont CPU variant.
Signed-off-by: Rahul Tanwar <rahul.tanwar@linux.intel.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
Cc: Gayatri Kammela <gayatri.kammela@intel.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: https://lkml.kernel.org/r/20190905193020.14707-5-tony.luck@intel.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Add new Airmont variant CPU model to Intel family.
Signed-off-by: Rahul Tanwar <rahul.tanwar@linux.intel.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
Cc: Gayatri Kammela <gayatri.kammela@intel.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: https://lkml.kernel.org/r/20190905193020.14707-4-tony.luck@intel.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Add the model number/CPUID of atom based Elkhart Lake to the Intel
family.
Signed-off-by: Gayatri Kammela <gayatri.kammela@intel.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Rahul Tanwar <rahul.tanwar@linux.intel.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: https://lkml.kernel.org/r/20190905193020.14707-3-tony.luck@intel.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Add the model numbers/CPUIDs of Tiger Lake mobile and desktop to the
Intel family.
Suggested-by: Tony Luck <tony.luck@intel.com>
Signed-off-by: Gayatri Kammela <gayatri.kammela@intel.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
Reviewed-by: Tony Luck <tony.luck@intel.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Rahul Tanwar <rahul.tanwar@linux.intel.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: https://lkml.kernel.org/r/20190905193020.14707-2-tony.luck@intel.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Signed-off-by: Ingo Molnar <mingo@kernel.org>
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When the log fills up, we can get into the state where the
outstanding items in the CIL being committed and aggregated are
larger than the range that the reservation grant head tail pushing
will attempt to clean. This can result in the tail pushing range
being trimmed back to the the log head (l_last_sync_lsn) and so
may not actually move the push target at all.
When the iclogs associated with the CIL commit finally land, the
log head moves forward, and this removes the restriction on the AIL
push target. However, if we already have transactions sleeping on
the grant head, and there's nothing in the AIL still to flush from
the current push target, then nothing will move the tail of the log
and trigger a log reservation wakeup.
Hence the there is nothing that will trigger xlog_grant_push_ail()
to recalculate the AIL push target and start pushing on the AIL
again to write back the metadata objects that pin the tail of the
log and hence free up space and allow the transaction reservations
to be woken and make progress.
Hence we need to push on the grant head when we move the log head
forward, as this may be the only trigger we have that can move the
AIL push target forwards in this situation.
Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
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xlog_state_clean_log() is only called from one place, and it occurs
when an iclog is transitioning back to ACTIVE. Prior to calling
xlog_state_clean_log, the iclog we are processing has a hard coded
state check to DIRTY so that xlog_state_clean_log() processes it
correctly. We also have a hard coded wakeup after
xlog_state_clean_log() to enfore log force waiters on that iclog
are woken correctly.
Both of these things are operations required to finish processing an
iclog and return it to the ACTIVE state again, so they make little
sense to be separated from the rest of the clean state transition
code.
Hence push these things inside xlog_state_clean_log(), document the
behaviour and rename it xlog_state_clean_iclog() to indicate that
it's being driven by an iclog state change and does the iclog state
change work itself.
Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
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The iclog IO completion state processing is somewhat complex, and
because it's inside two nested loops it is highly indented and very
hard to read. Factor it out, flatten the logic flow and clean up the
comments so that it much easier to see what the code is doing both
in processing the individual iclogs and in the over
xlog_state_do_callback() operation.
Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
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Simplify the code flow by lifting the iclog callback work out of
the main iclog iteration loop. This isolates the log juggling and
callbacks from the iclog state change logic in the loop.
Note that the loopdidcallbacks variable is not actually tracking
whether callbacks are actually run - it is tracking whether the
icloglock was dropped during the loop and so determines if we
completed the entire iclog scan loop atomically. Hence we know for
certain there are either no more ordered completions to run or
that the next completion will run the remaining ordered iclog
completions. Hence rename that variable appropriately for it's
function.
Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
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Start making this function readable by lifting the debug code into
a conditional function.
Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
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generic/530 on a machine with enough ram and a non-preemptible
kernel can run the AGI processing phase of log recovery enitrely out
of cache. This means it never blocks on locks, never waits for IO
and runs entirely through the unlinked lists until it either
completes or blocks and hangs because it has run out of log space.
It runs out of log space because the background CIL push is
scheduled but never runs. queue_work() queues the CIL work on the
current CPU that is busy, and the workqueue code will not run it on
any other CPU. Hence if the unlinked list processing never yields
the CPU voluntarily, the push work is delayed indefinitely. This
results in the CIL aggregating changes until all the log space is
consumed.
When the log recoveyr processing evenutally blocks, the CIL flushes
but because the last iclog isn't submitted for IO because it isn't
full, the CIL flush never completes and nothing ever moves the log
head forwards, or indeed inserts anything into the tail of the log,
and hence nothing is able to get the log moving again and recovery
hangs.
There are several problems here, but the two obvious ones from
the trace are that:
a) log recovery does not yield the CPU for over 4 seconds,
b) binding CIL pushes to a single CPU is a really bad idea.
This patch addresses just these two aspects of the problem, and are
suitable for backporting to work around any issues in older kernels.
The more fundamental problem of preventing the CIL from consuming
more than 50% of the log without committing will take more invasive
and complex work, so will be done as followup work.
Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
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