Register the dw-hdmi-qp bridge driver as an HDMI audio codec.
The register values computation functions (for n) are based on the
downstream driver, as well as the register writing functions.
The driver uses the generic HDMI Codec framework in order to implement
the HDMI audio support.
Signed-off-by: Sugar Zhang <sugar.zhang@rock-chips.com>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Tested-by: Quentin Schulz <quentin.schulz@cherry.de>
Reviewed-by: Robert Foss <rfoss@kernel.org>
Signed-off-by: Detlev Casanova <detlev.casanova@collabora.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20250217215641.372723-2-detlev.casanova@collabora.com
Polarity for DE is stored in bridge state. Use this flag for setting
the DE polarity in the bridge.
Signed-off-by: Alexander Stein <alexander.stein@ew.tq-group.com>
Tested-by: Herve Codina <herve.codina@bootlin.com>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Signed-off-by: Robert Foss <rfoss@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20250225135114.801884-1-alexander.stein@ew.tq-group.com
The DRM and KMS frameworks and helpers gain more and more kunit
coverage, so let's document what our expectations are.
Suggested-by: Jani Nikula <jani.nikula@intel.com>
Acked-by: Maíra Canal <mcanal@igalia.com>
Acked-by: Tvrtko Ursulin <tvrtko.ursulin@igalia.com>
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Acked-by: Jani Nikula <jani.nikula@intel.com>
Acked-by: Simona Vetter <simona.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20250113101100.1373856-1-mripard@kernel.org
Signed-off-by: Maxime Ripard <mripard@kernel.org>
Replace platform_get_resource_byname + devm_ioremap_resource
with just devm_platform_ioremap_resource()
Used Coccinelle to do this change. SmPl patch:
//rule s/(devm_)platform_get_resource_byname +
//(devm_)ioremap/devm_platform_ioremap_resource.
@rule_3@
identifier res;
expression ioremap;
identifier pdev;
constant mem;
expression name;
@@
-struct resource *res;
<+...
-res = platform_get_resource_byname(pdev,mem,name);
<...
-if (!res) {
-...
-}
...>
-ioremap = devm_ioremap(...);
+ioremap = devm_platform_ioremap_resource_byname(pdev,name);
...+>
v2: Change the SmPl patch to work on multiple occurences of
the pattern. This also fixes the compilation error.
v3: Do not convert "hd" resource to follow the rest of the
refactor. (Maxime)
v4: fix compiler error
Cc: Maxime Ripard <mripard@kernel.org>
Cc: Dave Stevenson <dave.stevenson@raspberrypi.com>
Cc: Maíra Canal <mcanal@igalia.com>
Reviewed-by: Maxime Ripard <mripard@kernel.org>
Signed-off-by: Anusha Srivatsa <asrivats@redhat.com>
Link: https://lore.kernel.org/r/20250225-memory-drm-misc-next-v1-11-9d0e8761107a@redhat.com
Signed-off-by: Maxime Ripard <mripard@kernel.org>
Replace platform_get_resource + devm_ioremap_resource
with just devm_platform_ioremap_resource()
Used Coccinelle to do this change. SmPl patch:
@rule_1@
identifier res;
expression ioremap_res;
identifier pdev;
@@
-struct resource *res;
...
-res = platform_get_resource(pdev,...);
-ioremap_res = devm_ioremap_resource(...);
+ioremap_res = devm_platform_ioremap_resource(pdev,0);
Cc: Chun-Kuang Hu <chunkuang.hu@kernel.org>
Cc: Philipp Zabel <p.zabel@pengutronix.de>
Reviewed-by: Maxime Ripard <mripard@kernel.org>
Reviewed-by: CK Hu <ck.hu@mediatek.com>
Signed-off-by: Anusha Srivatsa <asrivats@redhat.com>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Link: https://lore.kernel.org/r/20250225-memory-drm-misc-next-v1-4-9d0e8761107a@redhat.com
Signed-off-by: Maxime Ripard <mripard@kernel.org>
Add myself as the maintainer of the recently orphaned repaper and
mi0283qt drivers.
Signed-off-by: Alex Lanzano <lanzano.alex@gmail.com>
Acked-by: Noralf Trønnes <noralf@tronnes.org>
Acked-by: Thomas Zimmermann <tzimmermann@suse.de>
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20250210233232.3995143-1-lanzano.alex@gmail.com
Link Training Tunable PHY Repeaters (LTTPRs) are defined in DisplayPort
1.4a specification. As the name suggests, these PHY repeaters are
capable of adjusting their output for link training purposes.
According to the DisplayPort standard, LTTPRs have two operating
modes:
- non-transparent - it replies to DPCD LTTPR field specific AUX
requests, while passes through all other AUX requests
- transparent - it passes through all AUX requests.
Switching between these two modes is done by the DPTX by issuing
an AUX write to the DPCD PHY_REPEATER_MODE register.
The msm DP driver is currently lacking any handling of LTTPRs.
This means that if at least one LTTPR is found between DPTX and DPRX,
the link training would fail if that LTTPR was not already configured
in transparent mode.
The section 3.6.6.1 from the DisplayPort v2.0 specification mandates
that before link training with the LTTPR is started, the DPTX may place
the LTTPR in non-transparent mode by first switching to transparent mode
and then to non-transparent mode. This operation seems to be needed only
on first link training and doesn't need to be done again until device is
unplugged.
It has been observed on a few X Elite-based platforms which have
such LTTPRs in their board design that the DPTX needs to follow the
procedure described above in order for the link training to be successful.
So add support for reading the LTTPR DPCD caps to figure out the number
of such LTTPRs first. Then, for platforms (or Type-C dongles) that have
at least one such an LTTPR, set its operation mode to transparent mode
first and then to non-transparent, just like the mentioned section of
the specification mandates.
Tested-by: Johan Hovold <johan+linaro@kernel.org>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: Johan Hovold <johan+linaro@kernel.org>
Signed-off-by: Abel Vesa <abel.vesa@linaro.org>
Reviewed-by: Abhinav Kumar <quic_abhinavk@quicinc.com>
Acked-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20250203-drm-dp-msm-add-lttpr-transparent-mode-set-v5-4-c865d0e56d6e@linaro.org
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
LTTPRs operating modes are defined by the DisplayPort standard and the
generic framework now provides a helper to switch between them, which
is handling the explicit disabling of non-transparent mode and its
disable->enable sequence mentioned in the DP Standard v2.0 section
3.6.6.1.
So use the new drm generic helper instead as it makes the code a bit
cleaner. Since the driver specific implementation holds the
lttrp_common_caps, if the call to the drm generic helper fails, the
lttrp_common_caps need to be updated as the helper has already rolled
back to transparent mode.
Acked-by: Imre Deak <imre.deak@intel.com>
Signed-off-by: Abel Vesa <abel.vesa@linaro.org>
Reviewed-by: Suraj Kandpal <suraj.kandpal@intel.com>
Acked-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20250203-drm-dp-msm-add-lttpr-transparent-mode-set-v5-3-c865d0e56d6e@linaro.org
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
LTTPRs operating modes are defined by the DisplayPort standard and the
generic framework now provides a helper to switch between them, which
is handling the explicit disabling of non-transparent mode and its
disable->enable sequence mentioned in the DP Standard v2.0 section
3.6.6.1.
So use the new drm generic helper instead as it makes the code a bit
cleaner.
Reviewed-by: Lyude Paul <lyude@redhat.com>
Signed-off-by: Abel Vesa <abel.vesa@linaro.org>
Acked-by: Jani Nikula <jani.nikula@intel.com>
Acked-by: Danilo Krummrich <dakr@kernel.org> # via IRC
Link: https://patchwork.freedesktop.org/patch/msgid/20250203-drm-dp-msm-add-lttpr-transparent-mode-set-v5-2-c865d0e56d6e@linaro.org
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
According to the DisplayPort standard, LTTPRs have two operating
modes:
- non-transparent - it replies to DPCD LTTPR field specific AUX
requests, while passes through all other AUX requests
- transparent - it passes through all AUX requests.
Switching between this two modes is done by the DPTX by issuing
an AUX write to the DPCD PHY_REPEATER_MODE register.
Add a generic helper that allows switching between these modes.
Also add a generic wrapper for the helper that handles the explicit
disabling of non-transparent mode and its disable->enable sequence
mentioned in the DP Standard v2.0 section 3.6.6.1. Do this in order
to move this handling out of the vendor specific driver implementation
into the generic framework.
Tested-by: Johan Hovold <johan+linaro@kernel.org>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: Johan Hovold <johan+linaro@kernel.org>
Reviewed-by: Abhinav Kumar <quic_abhinavk@quicinc.com>
Signed-off-by: Abel Vesa <abel.vesa@linaro.org>
Acked-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20250203-drm-dp-msm-add-lttpr-transparent-mode-set-v5-1-c865d0e56d6e@linaro.org
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
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Merge tag 'v6.14-rc4' into drm-next
Backmerge Linux 6.14-rc4 at the request of tzimmermann so misc-next
can base on rc4.
Signed-off-by: Dave Airlie <airlied@redhat.com>
There are conditions, albeit somewhat unlikely, under which right hand
expressions, calculating the end of time period in functions like
repaper_frame_fixed_repeat(), may overflow.
For instance, if 'factor10x' in repaper_get_temperature() is high
enough (170), as is 'epd->stage_time' in repaper_probe(), then the
resulting value of 'end' will not fit in unsigned int expression.
Mitigate this by casting 'epd->factored_stage_time' to wider type before
any multiplication is done.
Found by Linux Verification Center (linuxtesting.org) with static
analysis tool SVACE.
Fixes: 3589211e9b ("drm/tinydrm: Add RePaper e-ink driver")
Cc: stable@vger.kernel.org
Signed-off-by: Nikita Zhandarovich <n.zhandarovich@fintech.ru>
Signed-off-by: Alex Lanzano <lanzano.alex@gmail.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20250116134801.22067-1-n.zhandarovich@fintech.ru
Currently CONFIG_PWM is a bool but I intend to change it to tristate. If
CONFIG_PWM=m in the configuration, the cpp symbol CONFIG_PWM isn't
defined and so the PWM code paths in the ti-sn65dsi86 driver are not
used.
The correct way to check for CONFIG_PWM is using IS_REACHABLE which does
the right thing for all cases
CONFIG_DRM_TI_SN65DSI86 ∈ { y, m } x CONFIG_PWM ∈ { y, m, n }.
There is no change until CONFIG_PWM actually becomes tristate.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@baylibre.com>
Reviewed-by: Louis Chauvet <louis.chauvet@bootlin.com>
Reviewed-by: Robert Foss <rfoss@kernel.org>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20250217174936.758420-2-u.kleine-koenig@baylibre.com
Do a bit of house keeping in gpu_scheduler.h by grouping the API by type
of object it operates on.
Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@igalia.com>
Cc: Christian König <christian.koenig@amd.com>
Cc: Danilo Krummrich <dakr@kernel.org>
Cc: Matthew Brost <matthew.brost@intel.com>
Cc: Philipp Stanner <phasta@kernel.org>
Signed-off-by: Philipp Stanner <phasta@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20250221105038.79665-7-tvrtko.ursulin@igalia.com
Now that we have a header file for internal scheduler interfaces we can
move some more prototypes into it. By doing that we eliminate the chance
of drivers trying to use something which was not intended to be used.
Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@igalia.com>
Cc: Christian König <christian.koenig@amd.com>
Cc: Danilo Krummrich <dakr@kernel.org>
Cc: Matthew Brost <matthew.brost@intel.com>
Cc: Philipp Stanner <phasta@kernel.org>
Signed-off-by: Philipp Stanner <phasta@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20250221105038.79665-6-tvrtko.ursulin@igalia.com
Helper is for scheduler internal use so lets hide it from DRM drivers
completely.
At the same time we change the method of checking whethere there is
anything in the queue from peeking to looking at the node count.
Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@igalia.com>
Cc: Christian König <christian.koenig@amd.com>
Cc: Danilo Krummrich <dakr@kernel.org>
Cc: Matthew Brost <matthew.brost@intel.com>
Cc: Philipp Stanner <phasta@kernel.org>
Signed-off-by: Philipp Stanner <phasta@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20250221105038.79665-5-tvrtko.ursulin@igalia.com
We can re-order some struct members and take u32 credits outside of the
pointer sandwich and also for the last_dependency member we can get away
with an unsigned int since for dependency we use xa_limit_32b.
Pahole report before:
/* size: 160, cachelines: 3, members: 14 */
/* sum members: 156, holes: 1, sum holes: 4 */
/* last cacheline: 32 bytes */
And after:
/* size: 152, cachelines: 3, members: 14 */
/* last cacheline: 24 bytes */
Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@igalia.com>
Cc: Christian König <christian.koenig@amd.com>
Cc: Danilo Krummrich <dakr@kernel.org>
Cc: Matthew Brost <matthew.brost@intel.com>
Cc: Philipp Stanner <phasta@kernel.org>
Acked-by: Danilo Krummrich <dakr@kernel.org>
Acked-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Philipp Stanner <phasta@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20250221105038.79665-4-tvrtko.ursulin@igalia.com
Replace a copy of DRM scheduler's to_drm_sched_job with a copy of a newly
added drm_sched_entity_queue_pop.
This allows breaking the hidden dependency that queue_node has to be the
first element in struct drm_sched_job.
A comment is also added with a reference to the mailing list discussion
explaining the copied helper will be removed when the whole broken
amdgpu_job_stop_all_jobs_on_sched is removed.
Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@igalia.com>
Cc: Christian König <christian.koenig@amd.com>
Cc: Danilo Krummrich <dakr@kernel.org>
Cc: Matthew Brost <matthew.brost@intel.com>
Cc: Philipp Stanner <phasta@kernel.org>
Cc: Zhang, Hawking <Hawking.Zhang@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Philipp Stanner <phasta@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20250221105038.79665-3-tvrtko.ursulin@igalia.com
Idea is to add helpers for peeking and popping jobs from entities with
the goal of decoupling the hidden assumption in the code that queue_node
is the first element in struct drm_sched_job.
That assumption usually comes in the form of:
while ((job = to_drm_sched_job(spsc_queue_pop(&entity->job_queue))))
Which breaks if the queue_node is re-positioned due to_drm_sched_job
being implemented with a container_of.
This also allows us to remove duplicate definitions of to_drm_sched_job.
Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@igalia.com>
Cc: Christian König <christian.koenig@amd.com>
Cc: Danilo Krummrich <dakr@kernel.org>
Cc: Matthew Brost <matthew.brost@intel.com>
Cc: Philipp Stanner <phasta@kernel.org>
Signed-off-by: Philipp Stanner <phasta@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20250221105038.79665-2-tvrtko.ursulin@igalia.com
Revert one cleanup which turned out to eat too much stack space
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Merge tag 'i2c-for-6.14-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux
Pull i2c fix from Wolfram Sang:
"Revert one cleanup which turned out to eat too much stack space"
* tag 'i2c-for-6.14-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
i2c: core: Allocate temporary client dynamically
- Fix AVX-VNNI CPU feature dependency bug triggered via
the 'noxsave' boot option
- Fix typos in the SVA documentation
- Add Tony Luck as RDT co-maintainer and remove Fenghua Yu
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'x86-urgent-2025-02-22' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 fixes from Ingo Molnar:
- Fix AVX-VNNI CPU feature dependency bug triggered via the 'noxsave'
boot option
- Fix typos in the SVA documentation
- Add Tony Luck as RDT co-maintainer and remove Fenghua Yu
* tag 'x86-urgent-2025-02-22' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
docs: arch/x86/sva: Fix two grammar errors under Background and FAQ
x86/cpufeatures: Make AVX-VNNI depend on AVX
MAINTAINERS: Change maintainer for RDT
- Fix overly spread-out RSEQ concurrency ID allocation pattern that
regressed certain workloads.
- Fix RSEQ registration syscall behavior on -EFAULT errors when
CONFIG_DEBUG_RSEQ=y. (This debug option is disabled on most
distributions.)
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'sched-urgent-2025-02-22' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull rseq fixes from Ingo Molnar:
- Fix overly spread-out RSEQ concurrency ID allocation pattern that
regressed certain workloads
- Fix RSEQ registration syscall behavior on -EFAULT errors when
CONFIG_DEBUG_RSEQ=y (This debug option is disabled on most
distributions)
* tag 'sched-urgent-2025-02-22' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
rseq: Fix rseq registration with CONFIG_DEBUG_RSEQ
sched: Compact RSEQ concurrency IDs with reduced threads and affinity
- Fix inline asm constraint in cmma_test_essa() to avoid potential ESSA
detection miscompilation
- Fix build failure with CONFIG_GENDWARFKSYMS by disabling purgatory
symbol exports with -D__DISABLE_EXPORTS
- Update defconfigs
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Merge tag 's390-6.14-5' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux
Pull s390 fixes from Vasily Gorbik:
- Fix inline asm constraint in cmma_test_essa() to avoid potential ESSA
detection miscompilation
- Fix build failure with CONFIG_GENDWARFKSYMS by disabling purgatory
symbol exports with -D__DISABLE_EXPORTS
- Update defconfigs
* tag 's390-6.14-5' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux:
s390/boot: Fix ESSA detection
s390/purgatory: Use -D__DISABLE_EXPORTS
s390: Update defconfigs
Function graph accounting fixes:
- Fix the manage ops hashes
The function graph registers a "manager ops" and "sub-ops" to ftrace.
The manager ops does not have any callback but calls the sub-ops
callbacks. The manage ops hashes (what is used to tell ftrace what
functions to attach to) is built on the sub-ops it manages.
There was an error in the way it built the hash. An empty hash means to
attach to all functions. When the manager ops had one sub-ops it properly
copied its hash. But when the manager ops had more than one sub-ops, it
went into a loop to make a set of all functions it needed to add to the
hash. If any of the subops hashes was empty, that would mean to attach
to all functions. The error was that the first iteration of the loop
passed in an empty hash to start with in order to add the other hashes.
That starting hash was mistaken as to attach to all functions. This made
the manage ops attach to all functions whenever it had two or more
sub-ops, even if each sub-op was attached to only a single function.
- Do not add duplicate entries to the manager ops hash
If two or more subops hashes trace the same function, an entry for that
function will be added to the manager ops for each subops. This causes
waste and extra overhead.
Fprobe accounting fixes:
- Remove last function from fprobe hash
Fprobes has a ftrace hash to manage which functions an fprobe is attached
to. It also has a counter of how many fprobes are attached. When the last
fprobe is removed, it unregisters the fprobe from ftrace but does not
remove the functions the last fprobe was attached to from the hash. This
leaves the old functions attached. When a new fprobe is added, the fprobe
infrastructure attaches to not only the functions of the new fprobe, but
also to the functions of the last fprobe.
- Fix accounting of the fprobe counter
When a fprobe is added, it updates a counter. If the counter goes from
zero to one, it attaches its ops to ftrace. When an fprobe is removed, the
counter is decremented. If the counter goes from 1 to zero, it removes the
fprobes ops from ftrace. There was an issue where if two fprobes trace the
same function, the addition of each fprobe would increment the counter.
But when removing the first of the fprobes, it would notice that another
fprobe is still attached to one of its functions no it does not remove
the functions from the ftrace ops. But it also did not decrement the
counter. When the last fprobe is removed, the counter is still one. This
leaves the fprobes callback still registered with ftrace and it being
called by the functions defined by the fprobes ops hash. Worse yet,
because all the functions from the fprobe ops hash have been removed, that
tells ftrace that it wants to trace all functions. Thus, this puts the
state of the system where every function is calling the fprobe callback
handler (which does nothing as there are no registered fprobes), but this
causes a good 13% slow down of the entire system.
Other updates:
- Add a selftest to test the above issues to prevent regressions.
- Fix preempt count accounting in function tracing
Better recursion protection was added to function tracing which added
another layer of preempt disable. As the preempt_count gets traced in the
event, it needs to subtract the amount of preempt disabling the tracer
does to record what the preempt_count was when the trace was triggered.
- Fix memory leak in output of set_event
A variable is passed by the seq_file functions in the location that is
set by the return of the next() function. The start() function allocates
it and the stop() function frees it. But when the last item is found, the
next() returns NULL which leaks the data that was allocated in start().
The m->private is used for something else, so have next() free the data
when it returns NULL, as stop() will then just receive NULL in that case.
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Merge tag 'ftrace-v6.14-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace
Pull tracing fixes from Steven Rostedt:
"Function graph accounting fixes:
- Fix the manage ops hashes
The function graph registers a "manager ops" and "sub-ops" to
ftrace. The manager ops does not have any callback but calls the
sub-ops callbacks. The manage ops hashes (what is used to tell
ftrace what functions to attach to) is built on the sub-ops it
manages.
There was an error in the way it built the hash. An empty hash
means to attach to all functions. When the manager ops had one
sub-ops it properly copied its hash. But when the manager ops had
more than one sub-ops, it went into a loop to make a set of all
functions it needed to add to the hash. If any of the subops hashes
was empty, that would mean to attach to all functions. The error
was that the first iteration of the loop passed in an empty hash to
start with in order to add the other hashes. That starting hash was
mistaken as to attach to all functions. This made the manage ops
attach to all functions whenever it had two or more sub-ops, even
if each sub-op was attached to only a single function.
- Do not add duplicate entries to the manager ops hash
If two or more subops hashes trace the same function, an entry for
that function will be added to the manager ops for each subops.
This causes waste and extra overhead.
Fprobe accounting fixes:
- Remove last function from fprobe hash
Fprobes has a ftrace hash to manage which functions an fprobe is
attached to. It also has a counter of how many fprobes are
attached. When the last fprobe is removed, it unregisters the
fprobe from ftrace but does not remove the functions the last
fprobe was attached to from the hash. This leaves the old functions
attached. When a new fprobe is added, the fprobe infrastructure
attaches to not only the functions of the new fprobe, but also to
the functions of the last fprobe.
- Fix accounting of the fprobe counter
When a fprobe is added, it updates a counter. If the counter goes
from zero to one, it attaches its ops to ftrace. When an fprobe is
removed, the counter is decremented. If the counter goes from 1 to
zero, it removes the fprobes ops from ftrace.
There was an issue where if two fprobes trace the same function,
the addition of each fprobe would increment the counter. But when
removing the first of the fprobes, it would notice that another
fprobe is still attached to one of its functions no it does not
remove the functions from the ftrace ops.
But it also did not decrement the counter, so when the last fprobe
is removed, the counter is still one. This leaves the fprobes
callback still registered with ftrace and it being called by the
functions defined by the fprobes ops hash. Worse yet, because all
the functions from the fprobe ops hash have been removed, that
tells ftrace that it wants to trace all functions.
Thus, this puts the state of the system where every function is
calling the fprobe callback handler (which does nothing as there
are no registered fprobes), but this causes a good 13% slow down of
the entire system.
Other updates:
- Add a selftest to test the above issues to prevent regressions.
- Fix preempt count accounting in function tracing
Better recursion protection was added to function tracing which
added another layer of preempt disable. As the preempt_count gets
traced in the event, it needs to subtract the amount of preempt
disabling the tracer does to record what the preempt_count was when
the trace was triggered.
- Fix memory leak in output of set_event
A variable is passed by the seq_file functions in the location that
is set by the return of the next() function. The start() function
allocates it and the stop() function frees it. But when the last
item is found, the next() returns NULL which leaks the data that
was allocated in start(). The m->private is used for something
else, so have next() free the data when it returns NULL, as stop()
will then just receive NULL in that case"
* tag 'ftrace-v6.14-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace:
tracing: Fix memory leak when reading set_event file
ftrace: Correct preemption accounting for function tracing.
selftests/ftrace: Update fprobe test to check enabled_functions file
fprobe: Fix accounting of when to unregister from function graph
fprobe: Always unregister fgraph function from ops
ftrace: Do not add duplicate entries in subops manager ops
ftrace: Fix accounting of adding subops to a manager ops
drivers/i2c/i2c-core-base.c: In function ‘i2c_detect.isra’:
drivers/i2c/i2c-core-base.c:2544:1: warning: the frame size of 1312 bytes is larger than 1024 bytes [-Wframe-larger-than=]
2544 | }
| ^
Fix this by allocating the temporary client structure dynamically, as it
is a rather large structure (1216 bytes, depending on kernel config).
This is basically a revert of the to-be-fixed commit with some
checkpatch improvements.
Fixes: 735668f8e5 ("i2c: core: Allocate temp client on the stack in i2c_detect")
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Su Hui <suhui@nfschina.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
[wsa: updated commit message, merged tags from similar patch]
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Two people stepped up as platform co-maintainers: Andrew Jeffery for
ASpeed and Janne Grunau for Apple.
The rockchip platform gets 9 small fixes for devicetree files, addressing
both compile-time warnings and board specific bugs.
One bugfix for the optee firmware driver addresses a reboot-time hang.
Two drivers need improved Kconfig dependencies to allow wider compile-
testing while hiding the drivers on platforms that can't use them.
ARM SCMI and loongson-guts drivers get minor bugfixes.
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Merge tag 'soc-fixes-6.14' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc
Pull SoC fixes from Arnd Bergmann:
"Two people stepped up as platform co-maintainers: Andrew Jeffery for
ASpeed and Janne Grunau for Apple.
The rockchip platform gets 9 small fixes for devicetree files,
addressing both compile-time warnings and board specific bugs.
One bugfix for the optee firmware driver addresses a reboot-time hang.
Two drivers need improved Kconfig dependencies to allow wider compile-
testing while hiding the drivers on platforms that can't use them.
ARM SCMI and loongson-guts drivers get minor bugfixes"
* tag 'soc-fixes-6.14' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc:
soc: loongson: loongson2_guts: Add check for devm_kstrdup()
tee: optee: Fix supplicant wait loop
platform: cznic: CZNIC_PLATFORMS should depend on ARCH_MVEBU
firmware: imx: IMX_SCMI_MISC_DRV should depend on ARCH_MXC
MAINTAINERS: arm: apple: Add Janne as maintainer
MAINTAINERS: Mark Andrew as M: for ASPEED MACHINE SUPPORT
firmware: arm_scmi: imx: Correct tx size of scmi_imx_misc_ctrl_set
arm64: dts: rockchip: adjust SMMU interrupt type on rk3588
arm64: dts: rockchip: disable IOMMU when running rk3588 in PCIe endpoint mode
dt-bindings: rockchip: pmu: Ensure all properties are defined
arm64: defconfig: Enable TISCI Interrupt Router and Aggregator
arm64: dts: rockchip: Fix lcdpwr_en pin for Cool Pi GenBook
arm64: dts: rockchip: fix fixed-regulator renames on rk3399-gru devices
arm64: dts: rockchip: Disable DMA for uart5 on px30-ringneck
arm64: dts: rockchip: Move uart5 pin configuration to px30 ringneck SoM
arm64: dts: rockchip: change eth phy mode to rgmii-id for orangepi r1 plus lts
arm64: dts: rockchip: Fix broken tsadc pinctrl names for rk3588
core:
- remove MAINTAINERS entry
cgroup/dmem:
- use correct function for pool descendants
panel:
- fix signal polarity issue jd9365da-h3
nouveau:
- folio handling fix
- config fix
amdxdna:
- fix missing header
xe:
- Fix error handling in xe_irq_install
- Fix devcoredump format
i915:
- Use spin_lock_irqsave() in interruptible context on guc submission
- Fixes on DDI and TRANS programming
- Make sure all planes in use by the joiner have their crtc included
- Fix 128b/132b modeset issues
msm:
- More catalog fixes:
- to skip watchdog programming through top block if its not present
- fix the setting of WB mask to ensure the WB input control is programmed
correctly through ping-pong
- drop lm_pair for sm6150 as that chipset does not have any 3dmerge block
- Fix the mode validation logic for DP/eDP to account for widebus (2ppc)
to allow high clock resolutions
- Fix to disable dither during encoder disable as otherwise this was
causing kms_writeback failure due to resource sharing between
WB and DSI paths as DSI uses dither but WB does not
- Fixes for virtual planes, namely to drop extraneous return and fix
uninitialized variables
- Fix to avoid spill-over of DSC encoder block bits when programming
the bits-per-component
- Fixes in the DSI PHY to protect against concurrent access of
PHY_CMN_CLK_CFG regs between clock and display drivers
- Core/GPU:
- Fix non-blocking fence wait incorrectly rounding up to 1 jiffy timeout
- Only print GMU fw version once, instead of each time the GPU resumes
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Merge tag 'drm-fixes-2025-02-22' of https://gitlab.freedesktop.org/drm/kernel
Pull drm fixes from Dave Airlie:
"Weekly drm fixes pull request, lots of small things all over, msm has
a bunch of things but all very small, xe, i915, a fix for the cgroup
dmem controller.
core:
- remove MAINTAINERS entry
cgroup/dmem:
- use correct function for pool descendants
panel:
- fix signal polarity issue jd9365da-h3
nouveau:
- folio handling fix
- config fix
amdxdna:
- fix missing header
xe:
- Fix error handling in xe_irq_install
- Fix devcoredump format
i915:
- Use spin_lock_irqsave() in interruptible context on guc submission
- Fixes on DDI and TRANS programming
- Make sure all planes in use by the joiner have their crtc included
- Fix 128b/132b modeset issues
msm:
- More catalog fixes:
- to skip watchdog programming through top block if its not
present
- fix the setting of WB mask to ensure the WB input control is
programmed correctly through ping-pong
- drop lm_pair for sm6150 as that chipset does not have any
3dmerge block
- Fix the mode validation logic for DP/eDP to account for widebus
(2ppc) to allow high clock resolutions
- Fix to disable dither during encoder disable as otherwise this
was causing kms_writeback failure due to resource sharing
between WB and DSI paths as DSI uses dither but WB does not
- Fixes for virtual planes, namely to drop extraneous return and
fix uninitialized variables
- Fix to avoid spill-over of DSC encoder block bits when
programming the bits-per-component
- Fixes in the DSI PHY to protect against concurrent access of
PHY_CMN_CLK_CFG regs between clock and display drivers
- Core/GPU:
- Fix non-blocking fence wait incorrectly rounding up to 1 jiffy
timeout
- Only print GMU fw version once, instead of each time the GPU
resumes"
* tag 'drm-fixes-2025-02-22' of https://gitlab.freedesktop.org/drm/kernel: (28 commits)
drm/i915/dp: Fix disabling the transcoder function in 128b/132b mode
drm/i915/dp: Fix error handling during 128b/132b link training
accel/amdxdna: Add missing include linux/slab.h
MAINTAINERS: Remove myself
drm/nouveau/pmu: Fix gp10b firmware guard
cgroup/dmem: Don't open-code css_for_each_descendant_pre
drm/xe/guc: Fix size_t print format
drm/xe: Make GUC binaries dump consistent with other binaries in devcoredump
drm/i915: Make sure all planes in use by the joiner have their crtc included
drm/i915/ddi: Fix HDMI port width programming in DDI_BUF_CTL
drm/i915/dsi: Use TRANS_DDI_FUNC_CTL's own port width macro
drm/xe: Fix error handling in xe_irq_install()
drm/i915/gt: Use spin_lock_irqsave() in interruptible context
drm/msm/dsi/phy: Do not overwite PHY_CMN_CLK_CFG1 when choosing bitclk source
drm/msm/dsi/phy: Protect PHY_CMN_CLK_CFG1 against clock driver
drm/msm/dsi/phy: Protect PHY_CMN_CLK_CFG0 updated from driver side
drm/msm/dpu: Drop extraneous return in dpu_crtc_reassign_planes()
drm/msm/dpu: Don't leak bits_per_component into random DSC_ENC fields
drm/msm/dpu: Disable dither in phys encoder cleanup
drm/msm/dpu: Fix uninitialized variable
...
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Merge tag 'block-6.14-20250221' of git://git.kernel.dk/linux
Pull block fixes from Jens Axboe:
- NVMe pull request via Keith:
- FC controller state check fixes (Daniel)
- PCI Endpoint fixes (Damien)
- TCP connection failure fixe (Caleb)
- TCP handling C2HTermReq PDU (Maurizio)
- RDMA queue state check (Ruozhu)
- Apple controller fixes (Hector)
- Target crash on disbaled namespace (Hannes)
- MD pull request via Yu:
- Fix queue limits error handling for raid0, raid1 and raid10
- Fix for a NULL pointer deref in request data mapping
- Code cleanup for request merging
* tag 'block-6.14-20250221' of git://git.kernel.dk/linux:
nvme: only allow entering LIVE from CONNECTING state
nvme-fc: rely on state transitions to handle connectivity loss
apple-nvme: Support coprocessors left idle
apple-nvme: Release power domains when probe fails
nvmet: Use enum definitions instead of hardcoded values
nvme: Cleanup the definition of the controller config register fields
nvme/ioctl: add missing space in err message
nvme-tcp: fix connect failure on receiving partial ICResp PDU
nvme: tcp: Fix compilation warning with W=1
nvmet: pci-epf: Avoid RCU stalls under heavy workload
nvmet: pci-epf: Do not uselessly write the CSTS register
nvmet: pci-epf: Correctly initialize CSTS when enabling the controller
nvmet-rdma: recheck queue state is LIVE in state lock in recv done
nvmet: Fix crash when a namespace is disabled
nvme-tcp: add basic support for the C2HTermReq PDU
nvme-pci: quirk Acer FA100 for non-uniqueue identifiers
block: fix NULL pointer dereferenced within __blk_rq_map_sg
block/merge: remove unnecessary min() with UINT_MAX
md/raid*: Fix the set_queue_limits implementations
If mhi_fw_load_handler() bails out early because the EE is not capable
of loading firmware, we may reference fw_load_type in cleanup which is
uninitialized at this point. The cleanup code checks fw_load_type as a
proxy for knowing if fbc_image was allocated and needs to be freed, but
we can directly test for that. This avoids the possible uninitialized
access and appears to be clearer code.
Reported-by: Dan Carpenter <dan.carpenter@linaro.org>
Closes: https://lore.kernel.org/all/e3148ac4-7bb8-422d-ae0f-18a8eb15e269@stanley.mountain/
Fixes: f88f1d0998 ("bus: mhi: host: Add a policy to enable image transfer via BHIe in PBL")
Signed-off-by: Jeffrey Hugo <quic_jhugo@quicinc.com>
Acked-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Reviewed-by: Carl Vanderlip <quic_carlv@quicinc.com>
Signed-off-by: Jeff Hugo <jeff.hugo@oss.qualcomm.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20250214162109.3555300-1-quic_jhugo@quicinc.com
