Using Python version 3.8.2 and PySide2 version 5.14.0, time chart call tree
would not expand the tree to the result. Fix by using setExpanded().
Example:
$ perf record -e intel_pt//u uname
Linux
[ perf record: Woken up 1 times to write data ]
[ perf record: Captured and wrote 0.034 MB perf.data ]
$ perf script --itrace=bep -s ~/libexec/perf-core/scripts/python/export-to-sqlite.py perf.data.db branches calls
2020-06-26 15:32:14.928997 Creating database ...
2020-06-26 15:32:14.933971 Writing records...
2020-06-26 15:32:15.535251 Adding indexes
2020-06-26 15:32:15.542993 Dropping unused tables
2020-06-26 15:32:15.549716 Done
$ python3 ~/libexec/perf-core/scripts/python/exported-sql-viewer.py perf.data.db
Select: Charts -> Time chart by CPU
Move mouse over middle of chart
Right-click and select Show Call Tree
Before: displays Call Tree but not expanded to selected time
After: displays Call Tree expanded to selected time
Fixes: e69d5df75d ("perf scripts python: exported-sql-viewer.py: Add ability for Call tree to open at a specified task and time")
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: stable@vger.kernel.org
Link: http://lore.kernel.org/lkml/20200629091955.17090-7-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Using ctrl-F ('Find') would not find 'unknown' because it matches id
zero. Fix by excluding id zero from selection.
Example:
$ perf record -e intel_pt//u uname
Linux
[ perf record: Woken up 1 times to write data ]
[ perf record: Captured and wrote 0.034 MB perf.data ]
$ perf script --itrace=bep -s ~/libexec/perf-core/scripts/python/export-to-sqlite.py perf.data.db branches calls
2020-06-26 15:32:14.928997 Creating database ...
2020-06-26 15:32:14.933971 Writing records...
2020-06-26 15:32:15.535251 Adding indexes
2020-06-26 15:32:15.542993 Dropping unused tables
2020-06-26 15:32:15.549716 Done
$ python3 ~/libexec/perf-core/scripts/python/exported-sql-viewer.py perf.data.db
Select: Reports -> Call Tree
Press: Ctrl-F
Enter: unknown
Press: Enter
Before: displays 'unknown' not found
After: tree is expanded to line showing 'unknown'
Fixes: ae8b887c00 ("perf scripts python: exported-sql-viewer.py: Add call tree")
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: stable@vger.kernel.org
Link: http://lore.kernel.org/lkml/20200629091955.17090-6-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Using ctrl-F ('Find') would not find 'unknown' because it matches id zero.
Fix by excluding id zero from selection.
Example:
$ perf record -e intel_pt//u uname
Linux
[ perf record: Woken up 1 times to write data ]
[ perf record: Captured and wrote 0.034 MB perf.data ]
$ perf script --itrace=bep -s ~/libexec/perf-core/scripts/python/export-to-sqlite.py perf.data.db branches calls
2020-06-26 15:32:14.928997 Creating database ...
2020-06-26 15:32:14.933971 Writing records...
2020-06-26 15:32:15.535251 Adding indexes
2020-06-26 15:32:15.542993 Dropping unused tables
2020-06-26 15:32:15.549716 Done
$ python3 ~/libexec/perf-core/scripts/python/exported-sql-viewer.py perf.data.db
Select: Reports -> Context-Sensitive Call Graph
Press: Ctrl-F
Enter: unknown
Press: Enter
Before: gets stuck
After: tree is expanded to line showing 'unknown'
Fixes: 254c0d820b ("perf scripts python: exported-sql-viewer.py: Factor out CallGraphModelBase")
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: stable@vger.kernel.org
Link: http://lore.kernel.org/lkml/20200629091955.17090-5-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Using Python version 3.8.2 and PySide2 version 5.14.0, ctrl-F ('Find')
would not expand the tree to the result. Fix by using setExpanded().
Example:
$ perf record -e intel_pt//u uname
Linux
[ perf record: Woken up 1 times to write data ]
[ perf record: Captured and wrote 0.034 MB perf.data ]
$ perf script --itrace=bep -s ~/libexec/perf-core/scripts/python/export-to-sqlite.py perf.data.db branches calls
2020-06-26 15:32:14.928997 Creating database ...
2020-06-26 15:32:14.933971 Writing records...
2020-06-26 15:32:15.535251 Adding indexes
2020-06-26 15:32:15.542993 Dropping unused tables
2020-06-26 15:32:15.549716 Done
$ python3 ~/libexec/perf-core/scripts/python/exported-sql-viewer.py perf.data.db
Select: Reports -> Context-Sensitive Call Graph or Reports -> Call Tree
Press: Ctrl-F
Enter: main
Press: Enter
Before: line showing 'main' does not display
After: tree is expanded to line showing 'main'
Fixes: ebd70c7dc2 ("perf scripts python: exported-sql-viewer.py: Add ability to find symbols in the call-graph")
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: stable@vger.kernel.org
Link: http://lore.kernel.org/lkml/20200629091955.17090-4-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Commit 0a892c1c94 ("perf record: Add dummy event during system wide
synthesis") reveals an issue with Intel PT system wide tracing.
Specifically that Intel PT already adds a dummy tracking event, and it
is not the first event. Adding another dummy tracking event causes
duplicated sideband events. Fix by checking for an existing dummy
tracking event first.
Example showing duplicated switch events:
Before:
# perf record -a -e intel_pt//u uname
Linux
[ perf record: Woken up 1 times to write data ]
[ perf record: Captured and wrote 0.895 MB perf.data ]
# perf script --no-itrace --show-switch-events | head
swapper 0 [007] 6390.516222: PERF_RECORD_SWITCH_CPU_WIDE OUT preempt next pid/tid: 11/11
swapper 0 [007] 6390.516222: PERF_RECORD_SWITCH_CPU_WIDE OUT preempt next pid/tid: 11/11
rcu_sched 11 [007] 6390.516223: PERF_RECORD_SWITCH_CPU_WIDE IN prev pid/tid: 0/0
rcu_sched 11 [007] 6390.516224: PERF_RECORD_SWITCH_CPU_WIDE IN prev pid/tid: 0/0
rcu_sched 11 [007] 6390.516227: PERF_RECORD_SWITCH_CPU_WIDE OUT next pid/tid: 0/0
rcu_sched 11 [007] 6390.516227: PERF_RECORD_SWITCH_CPU_WIDE OUT next pid/tid: 0/0
swapper 0 [007] 6390.516228: PERF_RECORD_SWITCH_CPU_WIDE IN prev pid/tid: 11/11
swapper 0 [007] 6390.516228: PERF_RECORD_SWITCH_CPU_WIDE IN prev pid/tid: 11/11
swapper 0 [002] 6390.516415: PERF_RECORD_SWITCH_CPU_WIDE OUT preempt next pid/tid: 5556/5559
swapper 0 [002] 6390.516416: PERF_RECORD_SWITCH_CPU_WIDE OUT preempt next pid/tid: 5556/5559
After:
# perf record -a -e intel_pt//u uname
Linux
[ perf record: Woken up 1 times to write data ]
[ perf record: Captured and wrote 0.868 MB perf.data ]
# perf script --no-itrace --show-switch-events | head
swapper 0 [005] 6450.567013: PERF_RECORD_SWITCH_CPU_WIDE OUT preempt next pid/tid: 7179/7181
perf 7181 [005] 6450.567014: PERF_RECORD_SWITCH_CPU_WIDE IN prev pid/tid: 0/0
perf 7181 [005] 6450.567028: PERF_RECORD_SWITCH_CPU_WIDE OUT next pid/tid: 0/0
swapper 0 [005] 6450.567029: PERF_RECORD_SWITCH_CPU_WIDE IN prev pid/tid: 7179/7181
swapper 0 [005] 6450.571699: PERF_RECORD_SWITCH_CPU_WIDE OUT preempt next pid/tid: 11/11
rcu_sched 11 [005] 6450.571700: PERF_RECORD_SWITCH_CPU_WIDE IN prev pid/tid: 0/0
rcu_sched 11 [005] 6450.571702: PERF_RECORD_SWITCH_CPU_WIDE OUT next pid/tid: 0/0
swapper 0 [005] 6450.571703: PERF_RECORD_SWITCH_CPU_WIDE IN prev pid/tid: 11/11
swapper 0 [005] 6450.579703: PERF_RECORD_SWITCH_CPU_WIDE OUT preempt next pid/tid: 11/11
rcu_sched 11 [005] 6450.579704: PERF_RECORD_SWITCH_CPU_WIDE IN prev pid/tid: 0/0
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Link: http://lore.kernel.org/lkml/20200629091955.17090-3-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
To bring in the change made in this cset:
e3a9e681ad ("x86/entry: Fixup bad_iret vs noinstr")
This doesn't cause any functional changes to tooling, just a rebuild.
Addresses this perf build warning:
Warning: Kernel ABI header at 'tools/arch/x86/lib/memcpy_64.S' differs from latest version at 'arch/x86/lib/memcpy_64.S'
diff -u tools/arch/x86/lib/memcpy_64.S arch/x86/lib/memcpy_64.S
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
We still need "Bump up CDCLK" workaround otherwise getting
underruns - however currently it blocks 8K as CDCLK = Pixel rate,
in 8K case would require CDCLK to be around 1 Ghz which is not
possible.
v2: - Convert to expression(max(min_cdclk, min(pixel_rate, max_cdclk))
(Ville Syrjälä)
- Use type specific min_t, max_t(Ville Syrjälä)
Fixes: 46d53e271c ("Revert "drm/i915: Remove unneeded hack now for CDCLK"")
Signed-off-by: Stanislav Lisovskiy <stanislav.lisovskiy@intel.com>
Reviewed-by: Manasi Navare <manasi.d.navare@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200702091526.10096-1-stanislav.lisovskiy@intel.com
This chip is (nearly) identical to the Winbond w25q64 which is
already supported by Linux. Compared to the w25q64, the 'jvm'
has a different JEDEC ID.
Signed-off-by: Sven Van Asbroeck <thesven73@gmail.com>
[tudor.ambarus@microchip.com: Order entry alphabetically, update
subject, update Sven's email address]
Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com>
Link: https://lore.kernel.org/r/20200629195306.1030-1-TheSven73@gmail.com
The MX25R1635F is the smaller sibling of the MX25R3235F that is
already supported. It's only half the size (16Mb).
It was tested on the Kontron Electronics i.MX8MM SoM (N8010)
using raw read and write from and to the mtd device and
the 'flash_erase' command.
Signed-off-by: Frieder Schrempf <frieder.schrempf@kontron.de>
[tudor.ambarus@microchip.com: update subject]
Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com>
Link: https://lore.kernel.org/r/20200702140523.6811-1-frieder.schrempf@kontron.de
Before this patch, some gfs2 code locked the freeze glock with LM_FLAG_NOEXP
(Do not freeze) flag, and some did not. We never want to freeze the freeze
glock, so this patch makes it consistently use LM_FLAG_NOEXP always.
Signed-off-by: Bob Peterson <rpeterso@redhat.com>
Before this patch, the freeze code in gfs2 specified GL_NOCACHE in
several places. That's wrong because we always want to know the state
of whether the file system is frozen.
There was also a problem with freeze/thaw transitioning the glock from
frozen (EX) to thawed (SH) because gfs2 will normally grant glocks in EX
to processes that request it in SH mode, unless GL_EXACT is specified.
Therefore, the freeze/thaw code, which tried to reacquire the glock in
SH mode would get the glock in EX mode, and miss the transition from EX
to SH. That made it think the thaw had completed normally, but since the
glock was still cached in EX, other nodes could not freeze again.
This patch removes the GL_NOCACHE flag to allow the freeze glock to be
cached. It also adds the GL_EXACT flag so the glock is fully transitioned
from EX to SH, thereby allowing future freeze operations.
Signed-off-by: Bob Peterson <rpeterso@redhat.com>
Before this patch, only read-write mounts would grab the freeze
glock in read-only mode, as part of gfs2_make_fs_rw. So the freeze
glock was never initialized. That meant requests to freeze, which
request the glock in EX, were granted without any state transition.
That meant you could mount a gfs2 file system, which is currently
frozen on a different cluster node, in read-only mode.
This patch makes read-only mounts lock the freeze glock in SH mode,
which will block for file systems that are frozen on another node.
Signed-off-by: Bob Peterson <rpeterso@redhat.com>
Before this patch, function freeze_go_sync, called when promoting
the freeze glock, was testing for the SDF_JOURNAL_LIVE superblock flag.
That's only set for read-write mounts. Read-only mounts don't use a
journal, so the bit is never set, so the freeze never happened.
This patch removes the check for SDF_JOURNAL_LIVE for freeze requests
but still checks it when deciding whether to flush a journal.
Signed-off-by: Bob Peterson <rpeterso@redhat.com>
In several places, we used the GIF_ORDERED inode flag to determine
if an inode was on the ordered writes list. However, since we always
held the sd_ordered_lock spin_lock during the manipulation, we can
just as easily check list_empty(&ip->i_ordered) instead.
This allows us to keep more than one ordered writes list to make
journal writing improvements.
This patch eliminates GIF_ORDERED in favor of checking list_empty.
Signed-off-by: Bob Peterson <rpeterso@redhat.com>
Increase build and test coverage by enabling support for more hardware
present on Renesas SoCs and boards:
- Renesas Gigabit Ethernet Controller on R-Car V3H, as used on the
Condor and V3HSK boards,
- Sony IMX219 and OmniVision OV5645 cameras, as used on the
AISTARVISION MIPI Adapter V2.1,
- Analog Devices ADV7511 HDMI audio, as used on various boards
(Condor, Draak, Eagle, Ebisu, V3HSK, and V3MSK).
All of the above are modular, except for Ethernet support (HDMI Audio
support is an optional feature of the modular ADV7511 driver).
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/20200630171500.11438-1-geert+renesas@glider.be
Increase build and test coverage by enabling support for more hardware
present on Renesas SoCs and boards:
- Dialog DA9063 PMIC "ONKEY", as used on the Stout and Silk boards,
- Renesas RZ/A watchdog timer, as used on RZ/A1H and RZ/A2M boards,
- Renesas RZ/A1H Capture Engine Unit, as used on the GR-Peach
audiocamera shield expansion board,
- Analog Devices ADV7612 HDMI receiver (incl. CEC), as used on the
Koelsch and Lager boards,
- Renesas RZ/A1H Realtime Clock, as used on the Genmai and RSK+RZA1
boards.
All of the above are modular (CEC support is an optional feature of the
modular ADV7604 driver).
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Link: https://lore.kernel.org/r/20200630171237.11077-1-geert+renesas@glider.be
Include linux/slab.h to fix a build error due to kfree() being undefined.
Fixes: 3f02cb2fd9 ("vfio-ccw: Wire up the CRW irq and CRW region")
Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com>
Message-Id: <20200703022628.6036-1-sean.j.christopherson@intel.com>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>
The information about platform/driver/user view of GuC firmware usage
currently requires user to either go through kernel log or parse the
combination of "enable_guc" modparam and various debugfs entries.
Let's keep things simple and add a "supported/used/wanted" matrix
(already used internally by i915) in guc_info debugfs.
Signed-off-by: Michał Winiarski <michal.winiarski@intel.com>
Cc: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Cc: Lukasz Fiedorowicz <lukasz.fiedorowicz@intel.com>
Cc: Michal Wajdeczko <michal.wajdeczko@intel.com>
Reviewed-by: Lukasz Fiedorowicz <lukasz.fiedorowicz@intel.com>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: https://patchwork.freedesktop.org/patch/msgid/20200701142752.419878-1-michal@hardline.pl
Since gen8 we don't use swizzle anymore. Don't dump registers related to
it: registers may or may not be there.
v2: pull the rest of driver state reporting before the read out (Chris)
Cc: Matt Roper <matthew.d.roper@intel.com>
Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: https://patchwork.freedesktop.org/patch/msgid/20200702200714.1278-1-lucas.demarchi@intel.com
Rather than reuse the common ctx->mutex for locking the execbuffer LUT,
split it into its own lock to avoid being taken [as part of ctx->mutex]
at inappropriate times. In particular to avoid the inversion from taking
the timeline->mutex for the whole execbuf submission in the next patch.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Andi Shyti <andi.shyti@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200703004306.11117-1-chris@chris-wilson.co.uk
uio_pdrv_genirq and uio_dmem_genirq interrupts are handled in
userspace. So the condition for the interrupt hasn't normally not been
cleared when top half returns. disable_irq_nosync is called in top half,
but since that normally is lazy the irq isn't actually disabled.
For level triggered interrupts this will always result in a spurious
additional fire since the level in to the interrupt controller still is
active. The actual interrupt handler isn't run though since this
spurious irq is just recorded, and later on discared (for level).
This commit disables lazy masking for level triggered interrupts. It
leaves edge triggered interrupts as before, because they work with the
lazy scheme.
All other UIO drivers already seem to clear the interrupt cause at
driver levels.
Example of double fire. First goes all the way up to
uio_pdrv_genirq_handler, second is terminated in handle_fasteoi_irq and
marked as pending.
<idle>-0 [000] d... 8.245870: gic_handle_irq: irq 29
<idle>-0 [000] d.h. 8.245873: uio_pdrv_genirq_handler: disable irq 29
<idle>-0 [000] d... 8.245878: gic_handle_irq: irq 29
<idle>-0 [000] d.h. 8.245880: handle_fasteoi_irq: irq 29 PENDING
HInt-34 [001] d... 8.245897: uio_pdrv_genirq_irqcontrol: enable irq 29
Tested on 5.7rc2 using uio_pdrv_genirq and a custom Xilinx MPSoC board.
Signed-off-by: Thommy Jakobsson <thommyj@gmail.com>
Link: https://lore.kernel.org/r/20200628141229.16121-1-thommyj@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Similar to the changes made in 270579d95f ("uio_mf624: Align memory
regions to page size and set correct offsets"), this will allow
uio_pdrv_genirq devices to expose memory regions that is not page-aligned,
requiring the users to respect the offset sysfs attribute (as implemented
in libuio).
Signed-off-by: Esben Haabendal <esben@geanix.com>
Link: https://lore.kernel.org/r/20200701145659.3978-4-esben@geanix.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
While e3a3c3a205 ("UIO: fix uio_pdrv_genirq with device tree but no
interrupt") added support for using uio_pdrv_genirq for devices without
interrupt for device tree platforms, the removal of uio_pdrv in
26dac3c49d ("uio: Remove uio_pdrv and use uio_pdrv_genirq instead")
broke the support for non device tree platforms.
This change fixes this, so that uio_pdrv_genirq can be used without
interrupt on all platforms.
This still leaves the support that uio_pdrv had for custom interrupt
handler lacking, as uio_pdrv_genirq does not handle it (yet).
Fixes: 26dac3c49d ("uio: Remove uio_pdrv and use uio_pdrv_genirq instead")
Signed-off-by: Esben Haabendal <esben@geanix.com>
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/20200701145659.3978-3-esben@geanix.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Since e3a3c3a205 ("UIO: fix uio_pdrv_genirq with device tree but no
interrupt"), the uio_pdrv_genirq has supported use without interrupt,
so the change in 7723f4c5ec ("driver core: platform: Add an error
message to") added false warnings for those cases.
Fixes: 7723f4c5ec ("driver core: platform: Add an error message to platform_get_irq*()")
Signed-off-by: Esben Haabendal <esben@geanix.com>
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/20200701145659.3978-2-esben@geanix.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This patch introduces the sysfs attributes serialnr and
mkvps for cex2c and cex3c cards. These sysfs attributes
are available for cex4c and higher since
commit 7c4e91c095 ("s390/zcrypt: new sysfs attributes serialnr and mkvps")'
and this patch now provides the same for the older cex2
and cex3 cards.
Signed-off-by: Harald Freudenberger <freude@linux.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
There is a state machine held for each ap queue device.
The states and functions related to this where somethimes
noted with _sm_ somethimes without. This patch clarifies
and renames all the ap queue state machine related functions,
enums and defines to have a _sm_ in the name.
There is no functional change coming with this patch - it's
only beautifying code.
Signed-off-by: Harald Freudenberger <freude@linux.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
The zcrpyt_unlocked_ioctl() function has become large. So split away
into new static functions the 4 ioctl ICARSAMODEXPO, ICARSACRT,
ZSECSENDCPRB and ZSENDEP11CPRB. This makes the code more readable and
is a preparation step for further improvements needed on these ioctls.
Signed-off-by: Harald Freudenberger <freude@linux.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Some beautifications related to the internal only used
struct ap_message and related code. Instead of one int carrying
only the special flag now a u32 flags field is used.
At struct CPRBX the pointers to additional data are now marked
with __user. This caused some changes needed on code, where
these structs are also used within the zcrypt misc functions.
The ica_rsa_* structs now use the generic types __u8, __u32, ...
instead of char, unsigned int.
zcrypt_msg6 and zcrypt_msg50 use min_t() instead of min().
Signed-off-by: Harald Freudenberger <freude@linux.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
segment_load() will no longer return -ENOSPC. If a segment overlaps with
storage, we now also return -EBUSY. Remove the stale comment from
__segment_load() and the stale handling from segment_warning().
Cc: Vasily Gorbik <gor@linux.ibm.com>
Cc: Christian Borntraeger <borntraeger@de.ibm.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Suggested-by: Gerald Schaefer <gerald.schaefer@de.ibm.com>
Signed-off-by: David Hildenbrand <david@redhat.com>
Message-Id: <20200630084240.8283-1-david@redhat.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
When multiple interface on different channels are in use. It is
necessary to advertise the AP that the device is no more awake before to
switch to the other channel.
Until now, PS-Poll was the preferred mechanism for that. However. The
new firmwares (>= 3.7) now nicely support FastPS.
FastPS improves bandwidth and compatibility with AP.
This patch drop the complex and rarely used mechanism introduced in the
commit dd5eba1bb5 ("staging: wfx: fix support for AP that do not
support PS-Poll") and use FastPS as soon as it is possible.
Signed-off-by: Jérôme Pouiller <jerome.pouiller@silabs.com>
Link: https://lore.kernel.org/r/20200701150707.222985-14-Jerome.Pouiller@silabs.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
In some advanced usage or debug scenarios, it could interesting to
change the value of ps_timeout or eventually to force use of PS-Poll
frames.
The wext API (used by iwconfig) provide a way to change ps_timeout.
However, this API is obsolete and it seems a little weird to use (it
seems it does apply the change, so the user have to disable then
re-enable de power save)
On side of nl80211, there is no way to change the ps_timeout.
This patch provides a file in debugfs to change the value of ps_timeout.
Signed-off-by: Jérôme Pouiller <jerome.pouiller@silabs.com>
Link: https://lore.kernel.org/r/20200701150707.222985-13-Jerome.Pouiller@silabs.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To enable the TKIP/CCMP replay protection, the frames has to be
processed in the right order. However, the device is not able to
re-order the frames during BlockAck sessions.
Mac80211 is able to reorder the frames, but it need the information
about the BlockAck sessions start and stop. Unfortunately, since the
BlockAck is fully handled by the hardware, these frames were not
forwarded to the host. So, if the driver ask to mac80211 to apply the
replay protection, it drop all misordered frames.
So, until now, the driver explicitly asked to mac80211 to not apply
the CCMP/TKIP replay protection.
The situation has changed with the API 3.4 of the device firmware. The
firmware forward the BlockAck information. Mac80211 is now able to
correctly reorder the frames. There is no more reasons to drop
cryptographic data.
This patch also impact the older firmwares. There will be a performance
impact on these firmware (since the misordered frames will dropped).
However, we can't keep the replay protection disabled.
Signed-off-by: Jérôme Pouiller <jerome.pouiller@silabs.com>
Link: https://lore.kernel.org/r/20200701150707.222985-12-Jerome.Pouiller@silabs.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
We don't want mac80211 try to check MMIC and other security mechanisms.
So, the driver remove all the data related to the encryption (IV, ICV,
MMIC).
However, enabling RX_FLAG_PN_VALIDATED is sufficient for that.
So, drop the useless function wfx_drop_encrypt_data() and enable
RX_FLAG_PN_VALIDATED.
Signed-off-by: Jérôme Pouiller <jerome.pouiller@silabs.com>
Link: https://lore.kernel.org/r/20200701150707.222985-11-Jerome.Pouiller@silabs.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
It seems that in the old days, the RSSI information could be missing. In
this case, in order to not pollute the RSSI stats, the frame was
dropped (!).
It is far better to mark the frame with the flag RX_FLAG_NO_SIGNAL_VAL.
In add, the problem seems now fixed in the firmware (at least, it has
not been encountered with recent firmwares).
Signed-off-by: Jérôme Pouiller <jerome.pouiller@silabs.com>
Link: https://lore.kernel.org/r/20200701150707.222985-10-Jerome.Pouiller@silabs.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Since the driver does not call ieee80211_sta_set_buffered() anymore, it
is no more necessary to maintain a counter of buffered frames for each
stations.
This change allows to simplify the processing in multiple places in the
driver.
Signed-off-by: Jérôme Pouiller <jerome.pouiller@silabs.com>
Link: https://lore.kernel.org/r/20200701150707.222985-9-Jerome.Pouiller@silabs.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
When a station go to sleep, the driver receive the status REQUEUE and
forward this answer to mac80211. So, neither the driver, neither the
hardware buffer the frames. So the call to ieee80211_sta_set_buffered is
useless.
In add, it seems that mac80211 does not expect to receive
ieee80211_sta_set_buffered(false) after the station is asleep(). When
the device send data to a station, the following sequence can be
observed:
- Mac80211 call wfx_sta_notify(awake).
- The driver calls ieee80211_sta_set_buffered(true). Since the
station is awake, its TIM is not set.
- Mac80211 receive a power save notification from the station, so it
calls wfx_sta_notify(asleep).
- Then, since the driver has declared it has buffered some frames,
the TIM of the station should be set. This action is delayed by
mac80211.
- The device also notice the station go to sleep. It replies the
REQUEUE status for the buffered frames. The driver forward this
status to mac80211.
- There is no more frames in queues, so the driver call
ieee80211_sta_set_buffered(false).
- Mac80211 updates the TIM but since there is no frames buffered by
the driver, it set the TIM for the station to 0.
Anyway, correctly use the ieee80211_sta_set_buffered() API solves the
problem.
Signed-off-by: Jérôme Pouiller <jerome.pouiller@silabs.com>
Link: https://lore.kernel.org/r/20200701150707.222985-8-Jerome.Pouiller@silabs.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
During the loading of the firmware, the WFX_DCA_GET register provide the
number available bytes in the receiving buffer. It is not necessary to
access to the WFX_DCA_GET after sent of each firmware fragment.
This patch allows to send the firmware:
- in 64ms instead of 130ms using SDIO bus
- in 78ms instead of 115ms using SPI bus
Signed-off-by: Jérôme Pouiller <jerome.pouiller@silabs.com>
Link: https://lore.kernel.org/r/20200701150707.222985-6-Jerome.Pouiller@silabs.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The device is able to send multiple Tx confirmations in the one reply.
In this case, there is only one vif identifier for all the
confirmations.
Unfortunately, to generate this kind of messages the device squashes all
the confirmations whatever their vif ID and use the vif ID of the first
confirmation. So, the driver cannot rely on the vif ID mentioned in the
header. Fortunately, using the packet_id, the driver can retrieve the Tx
request and the associated vif.
Signed-off-by: Jérôme Pouiller <jerome.pouiller@silabs.com>
Link: https://lore.kernel.org/r/20200701150707.222985-4-Jerome.Pouiller@silabs.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
When the driver has sent a frame on a virtual interface (vif), it
expects to receive the confirmation on the same vif.
This patch add a check for that.
Signed-off-by: Jérôme Pouiller <jerome.pouiller@silabs.com>
Link: https://lore.kernel.org/r/20200701150707.222985-3-Jerome.Pouiller@silabs.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The device handles 4 queues (one per AC) for each virtual interface (and
maximum 4 virtual interfaces). Until now the driver unified the queue of
all interfaces and handled only 4 queues for whole device.
This architecture did not allow to balance the traffic between the vif. So,
this patch relocate the queues into the vif and change the API accordingly.
Signed-off-by: Jérôme Pouiller <jerome.pouiller@silabs.com>
Link: https://lore.kernel.org/r/20200701150707.222985-2-Jerome.Pouiller@silabs.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
