Merge drm/drm-fixes into drm-misc-fixes

Getting fixes and updates from v7.1-rc1.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>

Merge branch 'next' into for-linus

Prepare input updates for 7.1 merge window.

Merge tag 'v7.0-rc3' into next

Sync up with the mainline to brig up the latest changes, specifically
changes to ALPS driver.

Merge branch 'for-7.1-printf-kunit-build' into for-linus

Merge tag 'trace-rtla-v7.1' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace

Pull RTLA updates from Steven Rostedt:

- Simplify option parsing

Auto-generate getopt_long() opts

Merge tag 'trace-rtla-v7.1' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace

Pull RTLA updates from Steven Rostedt:

- Simplify option parsing

Auto-generate getopt_long() optstring for short options from long
options array, avoiding the need to specify it manually and reducing
the surface for mistakes.

- Add unit tests

Implement unit tests (make unit-tests) using libcheck, next to
existing runtime tests (make check). Currently, three functions from
utils.c are tested.

- Add --stack-format option

In addition to stopping stack pointer decoding (with -s/--stack
option) on first unresolvable pointer, allow also skipping
unresolvable pointers and displaying everything, configurable with a
new option.

- Unify number of CPUs into one global variable

Use one global variable, nr_cpus, to store the number of CPUs instead
of retrieving it and passing it at multiple places.

- Fix behavior in various corner cases

Make RTLA behave correctly in several corner cases: memory allocation
failure, invalid value read from kernel side, thread creation
failure, malformed time value input, and read/write failure or
interruption by signal.

- Improve string handling

Simplify several places in the code that handle strings, including
parsing of action arguments. A few new helper functions and variables
are added for that purpose.

- Get rid of magic numbers

Few places handling paths use a magic number of 1024. Replace it with
MAX_PATH and ARRAY_SIZE() macro.

- Unify threshold handling

Code that handles response to latency threshold is duplicated between
tools, which has led to bugs in the past. Unify it into a new helper
as much as possible.

- Fix segfault on SIGINT during cleanup

The SIGINT handler touches dynamically allocated memory. Detach it
before freeing it during cleanup to prevent segmentation fault and
discarding of output buffers. Also, properly document SIGINT handling
while at it.

* tag 'trace-rtla-v7.1' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace: (28 commits)
Documentation/rtla: Document SIGINT behavior
rtla: Fix segfault on multiple SIGINTs
rtla/utils: Fix loop condition in PID validation
rtla/utils: Fix resource leak in set_comm_sched_attr()
rtla/trace: Fix I/O handling in save_trace_to_file()
rtla/trace: Fix write loop in trace_event_save_hist()
rtla/timerlat: Simplify RTLA_NO_BPF environment variable check
rtla: Use str_has_prefix() for option prefix check
rtla: Enforce exact match for time unit suffixes
rtla: Use str_has_prefix() for prefix checks
rtla: Add str_has_prefix() helper function
rtla: Handle pthread_create() failure properly
rtla/timerlat: Add bounds check for softirq vector
rtla: Simplify code by caching string lengths
rtla: Replace magic number with MAX_PATH
rtla: Introduce common_threshold_handler() helper
rtla/actions: Simplify argument parsing
rtla: Use strdup() to simplify code
rtla: Exit on memory allocation failures during initialization
tools/rtla: Remove unneeded nr_cpus from for_each_monitored_cpu
...

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Merge drm/drm-next into drm-xe-next

Backmerging to bring in 7.00-rc3. Important ahead GPU SVM merging THP
support.

Signed-off-by: Matthew Brost <matthew.brost@intel.com>

tools/rtla: Add unit tests for utils.c

Add unit tests for utility functions in src/utils.c using the Check
testing framework. The tests verify parse_cpu_set(), strtoi(), and
parse_prio() functions.

tools/rtla: Add unit tests for utils.c

Add unit tests for utility functions in src/utils.c using the Check
testing framework. The tests verify parse_cpu_set(), strtoi(), and
parse_prio() functions.

Unit tests are built conditionally when libcheck is available.
Run tests with 'make unit-test'.

The test framework uses the Check library which provides process
isolation for each test, preventing failures in one test from
affecting others.

Signed-off-by: Costa Shulyupin <costa.shul@redhat.com>
Link: https://lore.kernel.org/r/20260119105857.797498-3-costa.shul@redhat.com
Signed-off-by: Tomas Glozar <tglozar@redhat.com>

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Merge drm/drm-next into drm-intel-next

Sync with v7.0-rc1 which contains a few treewide changes affecting i915.

Signed-off-by: Jani Nikula <jani.nikula@intel.com>

Merge drm/drm-next into drm-misc-next

Let's merge 7.0-rc1 to start the new drm-misc-next window

Signed-off-by: Maxime Ripard <mripard@kernel.org>

Merge drm/drm-fixes into drm-misc-fixes

7.0-rc1 was just released, let's merge it to kick the new release cycle.

Signed-off-by: Maxime Ripard <mripard@kernel.org>

Merge tag 'trace-rtla-v7.0' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace

Pull RTLA updates from Steven Rostedt:

- Remove unused function declarations

Some functions were

Merge tag 'trace-rtla-v7.0' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace

Pull RTLA updates from Steven Rostedt:

- Remove unused function declarations

Some functions were removed in recent code consolidation 6.18, but
their prototypes were not removed from headers. Remove them.

- Set stop threshold after enabling instances

Prefer recording samples without stopping on them on the start of
tracing to stopping on samples that are never recorded. This fixes
flakiness of some RTLA tests and unifies behavior of sample
collection between tracefs mode and BPF mode.

- Consolidate usage help message implementation

RTLA tools (osnoise-top, osnoise-hist, timerlat-top, timerlat-hist)
each implement usage help individually. Move common logic between
them into a new function to reduce code duplication.

- Add BPF actions feature

Add option --bpf-action to attach a BPF program (passed as filename
of its ELF representation) to be executed via BPF tail call at
latency threshold.

- Consolidate command line option parsing

Each RTLA tool implements the parsing of command line options
individually. Now that we have a common structure for parameters,
unify the parsing of those options common among all four tools into
one function.

- De-duplicate cgroup common code

Two functions in utils.c, setting cgroup for comm and setting cgroup
for pid, duplicate code for constructing the cgroup path. Extract it
to a new helper function.

- String and error handling fixes and cleanups

There were several instances of unsafe string and error handling that
could cause invalid memory access; fix them. Also, remove a few
unused headers, update .gitignore, and deduplicate code.

* tag 'trace-rtla-v7.0' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace: (30 commits)
rtla: Fix parse_cpu_set() bug introduced by strtoi()
rtla: Fix parse_cpu_set() return value documentation
rtla: Ensure null termination after read operations in utils.c
rtla: Make stop_tracing variable volatile
rtla: Add generated output files to gitignore
rtla: Fix NULL pointer dereference in actions_parse
rtla: Remove unused headers
rtla: Remove redundant memset after calloc
rtla: Use standard exit codes for result enum
rtla: Replace atoi() with a robust strtoi()
rtla: Introduce for_each_action() helper
tools/rtla: Deduplicate cgroup path opening code
tools/rtla: Consolidate -H/--house-keeping option parsing
tools/rtla: Consolidate -P/--priority option parsing
tools/rtla: Consolidate -e/--event option parsing
tools/rtla: Consolidate -d/--duration option parsing
tools/rtla: Consolidate -D/--debug option parsing
tools/rtla: Consolidate -C/--cgroup option parsing
tools/rtla: Consolidate -c/--cpus option parsing
tools/rtla: Add common_parse_options()
...

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rtla/tests: Run Test::Harness in verbose mode

Add -v flag to prove command to also print the names of tests that
succeeded, not only those that failed, to allow easier debugging of the
test suite.

rtla/tests: Run Test::Harness in verbose mode

Add -v flag to prove command to also print the names of tests that
succeeded, not only those that failed, to allow easier debugging of the
test suite.

Also, drop printing the option and value to stdout in
check_with_osnoise_options, which was a debugging print that was
accidentally left in the final commit, and which would be otherwise now
visible in make check output, as stdout is no longer suppressed.

Suggested-by: Crystal Wood <crwood@redhat.com>
Reviewed-by: Wander Lairson Costa <wander@redhat.com>
Link: https://lore.kernel.org/r/20251126144205.331954-6-tglozar@redhat.com
Signed-off-by: Tomas Glozar <tglozar@redhat.com>

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rtla/tests: Test BPF action program

Add a test that implements a BPF program writing to a test map, which
is attached to RTLA via --bpf-action to be executed on theshold
overflow.

A combination of

rtla/tests: Test BPF action program

Add a test that implements a BPF program writing to a test map, which
is attached to RTLA via --bpf-action to be executed on theshold
overflow.

A combination of --on-threshold shell with bpftool (which is always
present if BPF support is enabled) is used to check whether the BPF
program has executed successfully.

Suggested-by: Crystal Wood <crwood@redhat.com>
Link: https://lore.kernel.org/r/20251126144205.331954-5-tglozar@redhat.com
Signed-off-by: Tomas Glozar <tglozar@redhat.com>

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rtla/timerlat: Add example for BPF action program

Add an example BPF action program that prints the measured latency to
the tracefs buffer via bpf_printk().

A new Makefile target, "examples", is ad

rtla/timerlat: Add example for BPF action program

Add an example BPF action program that prints the measured latency to
the tracefs buffer via bpf_printk().

A new Makefile target, "examples", is added to build the example. In
addition, "sample/" subfolder is renamed to "example".

If BPF skeleton support is unavailable or disabled, a warning will be
displayed when building the BPF action program example.

Link: https://lore.kernel.org/r/20251126144205.331954-4-tglozar@redhat.com
Signed-off-by: Tomas Glozar <tglozar@redhat.com>

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Merge drm/drm-next into drm-intel-gt-next

Need to pull in a67221b5eb8d ("drm/i915/dp: Return min bpc supported by source instead of 0")
in order to fix build breakage on GCC 9.4.0 (from Ubuntu 20.04

Merge drm/drm-next into drm-intel-gt-next

Need to pull in a67221b5eb8d ("drm/i915/dp: Return min bpc supported by source instead of 0")
in order to fix build breakage on GCC 9.4.0 (from Ubuntu 20.04).

Signed-off-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>

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Merge drm/drm-next into drm-intel-next

Backmerge to sync with v6.15-rc, xe, and specifically async flip changes
in drm-misc.

Signed-off-by: Jani Nikula <jani.nikula@intel.com>

Merge branch 'next' into for-linus

Prepare input updates for 6.16 merge window.

Merge tag 'v6.15-rc6' into next

Sync up with mainline to bring in xpad controller changes.

Merge remote-tracking branch 'drm-misc/drm-misc-next' into msm-next

Merge drm-misc-next to get commit Fixes: fec450ca15af ("drm/display:
hdmi: provide central data authority for ACR params").

Signe

Merge remote-tracking branch 'drm-misc/drm-misc-next' into msm-next

Merge drm-misc-next to get commit Fixes: fec450ca15af ("drm/display:
hdmi: provide central data authority for ACR params").

Signed-off-by: Rob Clark <robdclark@chromium.org>

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Merge drm/drm-next into drm-xe-next

Backmerge to bring in linux 6.15-rc.

Signed-off-by: Thomas Hellström <thomas.hellstrom@linux.intel.com>

Merge drm/drm-next into drm-misc-next

Backmerging to get v6.15-rc1 into drm-misc-next. Also fixes a
build issue when enabling CONFIG_DRM_SCHED_KUNIT_TEST.

Signed-off-by: Thomas Zimmermann <tzimmerm

Merge drm/drm-next into drm-misc-next

Backmerging to get v6.15-rc1 into drm-misc-next. Also fixes a
build issue when enabling CONFIG_DRM_SCHED_KUNIT_TEST.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>

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Merge drm/drm-next into drm-xe-next

Backmerging to bring in the xe shrinker from drm-next.

Signed-off-by: Thomas Hellström <thomas.hellstrom@linux.intel.com>

Merge tag 'v6.15-rc1' into x86/cpu, to refresh the branch with upstream changes

Signed-off-by: Ingo Molnar <mingo@kernel.org>

Merge tag 'v6.15-rc1' into x86/asm, to refresh the branch

Signed-off-by: Ingo Molnar <mingo@kernel.org>

Merge drm/drm-fixes into drm-misc-fixes

Backmerging to get updates from v6.15-rc1.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>