Commit Graph

1152668 Commits

Author SHA1 Message Date
Linus Torvalds
77856d911a arm64 fixes for -rc1
- Fix Kconfig dependencies to re-allow the enabling of function graph
   tracer and shadow call stacks at the same time.
 
 - Revert the workaround for CPU erratum #2645198 since the CONFIG_
   guards were incorrect and the code has therefore not seen any real
   exposure in -next.
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Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux

Pull arm64 fixes from Will Deacon:

 - Fix Kconfig dependencies to re-allow the enabling of function graph
   tracer and shadow call stacks at the same time.

 - Revert the workaround for CPU erratum #2645198 since the CONFIG_
   guards were incorrect and the code has therefore not seen any real
   exposure in -next.

* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
  Revert "arm64: errata: Workaround possible Cortex-A715 [ESR|FAR]_ELx corruption"
  ftrace: Allow WITH_ARGS flavour of graph tracer with shadow call stack
2022-12-16 13:46:41 -06:00
Linus Torvalds
aa4800e31c perf tools changes for v6.2: 1st batch
Libraries:
 
 - Drop the old copy of libtraceevent in tools/lib/traceevent/ now that all major distros
   ship it from its external repository.
 
   This is now just another feature detection, emitting a warning when the
   libtraceevent-dev[el] package isn't installed, disabling the build of perf features
   and tools that strictly require parsing things from tracefs while keeping
   the core functionality present and working with a subset of the events, the
   most used ones like CPU cycles, hardware cache and also vendor events, etc.
 
   This was tested with lots of containers for Fedora, Debian, OpenSUSE, Alpine Linux,
   Ubuntu, with cross builds, etc.
 
 Build:
 
 - Update to C standard to gnu11, like was done for the kernel.
 
 - Install the tools/lib/ libraries locally instead of having headers searched
   directly from the source code directories, to help the cases where we can
   build either from in-kernel source libraries or from the same library shipped
   as a distro package, as is the case with libbpf and was the case with
   libtraceevent.
 
 perf stat:
 
 - Do not delay the workload with --delay, the delay is just for starting to count
   the events, to skip noise at workload startup.
 
 - When we have events for each cgroup, the metric should be printed for each
   cgroup separately.
 
   $ perf stat -a --for-each-cgroup system.slice,user.slice --metric-only sleep 1
 
    Performance counter stats for 'system wide':
 
                    GHz  insn per cycle  branch-misses of all branches
    system.slice  3.792      0.61                  3.24%
    user.slice    3.661      2.32                  0.37%
 
 - Fix printing field separator in CSV metrics output.
 
 - Fix --metric-only --json output.
 
 - Fix summary output in CSV with --metric-only.
 
 - Update event group check for support of uncore event.
 
 perf test:
 
 - Stop requiring a C toolchain in shell tests, instead add a workload option that has
   all the previously C snippets built as part of 'perf test -w' that then get used in
   the 'perf test' shell scripts.
 
 - Add event group test for events in multiple PMUs
 
 - The "kernel lock contention analysis" test should not print warnings in quiet mode.
 
 - Add attr tests for ARM64's new VG register.
 
 - Fix record test on KVM guests, as using precise flag with the
   br_inst_retired.near_call event causes the test fail on KVM guests, even when
   the guests have PMU forwarding enabled and the event itself is supported, so just
   remove the precise flag from the event.
 
 - Add mechanism for skipping attr tests on specific kernel versions where it is known that
   these checks will fail.
 
 - Skip watchpoint tests if no watchpoints available.
 
 - Add more Intel PT 'perf test' entries: hybrid CPUs, split the packet decoder
   into a suite of subtests.
 
 perf script:
 
 - Introduce task analyzer python script, where one first records some events:
 
 Recording can be done in two ways:
 
   $ perf script record tasks-analyzer -- sleep 10
   $ perf record -e sched:sched_switch -a -- sleep 10
 
 The script can parse any perf.data files, as long as it has sched:sched_switch events,
 other events will be ignored.
 
 The most simple report use case is to just call the script without arguments.
 
 Runtime is the time the task was running on the CPU, Time Out-In is the time
 between the process being scheduled *out* and scheduled back *in*. So the last
 time span between two executions:
 
   $ perf script report tasks-analyzer
       Switched-In     Switched-Out CPU    PID    TID             Comm  Runtime  Time Out-In
   15576.658891407  15576.659156086   4   2412   2428            gdbus      265         1949
   15576.659111320  15576.659455410   0   2412   2412      gnome-shell      344         2267
   15576.659491326  15576.659506173   2     74     74      kworker/2:1       15        13145
   15576.659506173  15576.659825748   2   2858   2858  gnome-terminal-      320        63263
   15576.659871270  15576.659902872   6  20932  20932    kworker/u16:0       32      2314582
   15576.659909951  15576.659945501   3  27264  27264               sh       36           -1
   15576.659853285  15576.659971052   7  27265  27265             perf      118      5050741
   [...]
 
 perf lock:
 
 - Allow concurrent record and report to support live monitoring of kernel lock
   contention without BPF:
 
   # perf lock record -a -o- sleep 1 | perf lock contention -i-
    contended   total wait     max wait     avg wait         type   caller
 
            2     10.27 us      6.17 us      5.13 us     spinlock   load_balance+0xc03
            1      5.29 us      5.29 us      5.29 us     rwlock:W   ep_scan_ready_list+0x54
            1      4.12 us      4.12 us      4.12 us     spinlock   smpboot_thread_fn+0x116
            1      3.28 us      3.28 us      3.28 us        mutex   pipe_read+0x50
 
 - Implement -t/--threads option when using BPF:
 
   $ sudo ./perf lock contention -abt -E 5 sleep 1
    contended  total wait   max wait   avg wait      pid  comm
 
            1   740.66 ms  740.66 ms  740.66 ms     1950  nv_queue
            3   305.50 ms  298.19 ms  101.83 ms     1884  nvidia-modeset/
            1    25.14 us   25.14 us   25.14 us  2725038  EventManager_De
           12    23.09 us    9.30 us    1.92 us        0  swapper
            1    20.18 us   20.18 us   20.18 us  2725033  EventManager_De
 
 - Add -l/--lock-addr to aggregate per-lock-instance contention:
 
   $ sudo ./perf lock contention -abl sleep 1
    contended  total wait  max wait  avg wait           address  symbol
 
            1    36.28 us  36.28 us  36.28 us  ffff92615d6448b8
            9    10.91 us   1.84 us   1.21 us  ffffffffbaed50c0  rcu_state
            1    10.49 us  10.49 us  10.49 us  ffff9262ac4f0c80
            8     4.68 us   1.67 us    585 ns  ffffffffbae07a40  jiffies_lock
            3     3.03 us   1.45 us   1.01 us  ffff9262277861e0
            1      924 ns    924 ns    924 ns  ffff926095ba9d20
            1      436 ns    436 ns    436 ns  ffff9260bfda4f60
 
 perf record:
 
 - Add remaining branch filters: "no_cycles", "no_flags" & "hw_index", to be
   used with hardware such as Intel's LBR that allows things like stitching
   stacks of two samples to overcome the limits of the number of LBR registers.
 
 Symbol resolution:
 
 - Handle .debug files created with 'objcopy --only-keep-debug', where program
   headers are zeroed and thus can't be used for adjustments, use the info in
   the runtime_ss (runtime ELF) instead.
 
 perf trace:
 
 - Add BPF based augmenter for the 'perf_event_open's 'struct perf_event_attr' argument.
 
 - Add BPF based augmenter for the 'clock_gettime's 'struct timespec' argument.
 
 - In both cases the syscall tracepoint has just the pointer value, we
   need to hook a BPF program to collect the pointer contents, and then,
   in userspace, pretty print it in 'perf trace'.
 
 perf list:
 
 - Introduce JSON output of events.
 
 - Streamline how the expression specifying what events should be shown is handled,
   fixing several corner cases, such as the metric filter that is specified as a glob
   but was using strstr().
 
 perf probe:
 
 - Fix to avoid crashing if DW_AT_decl_file is NULL, coping with clang generating
   DWARF5 like that.
 
 - Use dwarf_attr_integrate() as generic DWARF attr accessor as it supersedes dwarf_attr(),
   supporting abstact origin DIEs.
 
 perf inject:
 
 - Set PERF_RECORD_MISC_BUILD_ID_SIZE in the PERF_RECORD_HEADER_BUILD_ID so that
   perf.data readers can get the real build-id size and avoid trailing zeros.
 
 perf data:
 
 - Add tracepoint fields when converting a perf.data file to JSON.
 
 arm64:
 
 - Fix mksyscalltbl, don't lose syscalls due to sort -nu.
 
 - Add Arm Neoverse V2 PMU events.
 
 riscv:
 
 - Add riscv sbi firmware std event files.
 
 - Add Sifive U74 vendor events (JSON) file.
 
 - Add some more events and metrics for Alderlake/Alderlake-N.
 
 Documentation:
 
 - Add data documentation for the PMU structs in the C source code.
 
 Miscellaneous:
 
 - Periodic sanitization of headers, adding missing includes, removing needless ones,
   creating new ones, etc.
 
 - Use sig_atomic_t for signal handlers to avoid undefined behaviour in all perf
   tools.
 
 - Fixes for libbpf 1.0+ compatibility (maps, etc) on 'perf trace' BPF examples.
 
 - Remove some old perf bpf examples, leave the best ones that demonstrate how
   to associate BPF functions to points in the kernel.
 
 - Make quiet mode consistent between tools.
 
 - Use dedicated non-atomic clear/set bit helpers.
 
 - Use "grep -E" instead of "egrep" as recommended by warning emitted by GNU
   grep since at least version 3.8.
 
 - Complete list of supported subcommands in the 'perf daemon' help message.
 
 - Update John Garry's email address for arm64 perf tooling on the MAINTAINERS file,
   he moved from Huawei to Oracle.
 
 Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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Merge tag 'perf-tools-for-v6.2-1-2022-12-16' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux

Pull perf tools updates from Arnaldo Carvalho de Melo:
 "Libraries:

   - Drop the old copy of libtraceevent in tools/lib/traceevent/ now
     that all major distros ship it from its external repository.

     This is now just another feature detection, emitting a warning when
     the libtraceevent-dev[el] package isn't installed, disabling the
     build of perf features and tools that strictly require parsing
     things from tracefs while keeping the core functionality present
     and working with a subset of the events, the most used ones like
     CPU cycles, hardware cache and also vendor events, etc.

     This was tested with lots of containers for Fedora, Debian,
     OpenSUSE, Alpine Linux, Ubuntu, with cross builds, etc.

  Build:

   - Update to C standard to gnu11, like was done for the kernel.

   - Install the tools/lib/ libraries locally instead of having headers
     searched directly from the source code directories, to help the
     cases where we can build either from in-kernel source libraries or
     from the same library shipped as a distro package, as is the case
     with libbpf and was the case with libtraceevent.

  perf stat:

   - Do not delay the workload with --delay, the delay is just for
     starting to count the events, to skip noise at workload startup.

   - When we have events for each cgroup, the metric should be printed
     for each cgroup separately.

        $ perf stat -a --for-each-cgroup system.slice,user.slice --metric-only sleep 1

        Performance counter stats for 'system wide':

                        GHz  insn per cycle  branch-misses of all branches
        system.slice  3.792      0.61                  3.24%
        user.slice    3.661      2.32                  0.37%

   - Fix printing field separator in CSV metrics output.

   - Fix --metric-only --json output.

   - Fix summary output in CSV with --metric-only.

   - Update event group check for support of uncore event.

  perf test:

   - Stop requiring a C toolchain in shell tests, instead add a workload
     option that has all the previously C snippets built as part of
     'perf test -w' that then get used in the 'perf test' shell scripts.

   - Add event group test for events in multiple PMUs

   - The "kernel lock contention analysis" test should not print
     warnings in quiet mode.

   - Add attr tests for ARM64's new VG register.

   - Fix record test on KVM guests, as using precise flag with the
     br_inst_retired.near_call event causes the test fail on KVM guests,
     even when the guests have PMU forwarding enabled and the event
     itself is supported, so just remove the precise flag from the
     event.

   - Add mechanism for skipping attr tests on specific kernel versions
     where it is known that these checks will fail.

   - Skip watchpoint tests if no watchpoints available.

   - Add more Intel PT 'perf test' entries: hybrid CPUs, split the
     packet decoder into a suite of subtests.

  perf script:

   - Introduce task analyzer python script, where one first records some events:

     Recording can be done in two ways:

        $ perf script record tasks-analyzer -- sleep 10
        $ perf record -e sched:sched_switch -a -- sleep 10

     The script can parse any perf.data files, as long as it has
     sched:sched_switch events, other events will be ignored.

     The most simple report use case is to just call the script without
     arguments.

     Runtime is the time the task was running on the CPU, Time Out-In is
     the time between the process being scheduled *out* and scheduled
     back *in*. So the last time span between two executions:

        $ perf script report tasks-analyzer
            Switched-In     Switched-Out CPU    PID    TID             Comm  Runtime  Time Out-In
        15576.658891407  15576.659156086   4   2412   2428            gdbus      265         1949
        15576.659111320  15576.659455410   0   2412   2412      gnome-shell      344         2267
        15576.659491326  15576.659506173   2     74     74      kworker/2:1       15        13145
        15576.659506173  15576.659825748   2   2858   2858  gnome-terminal-      320        63263
        15576.659871270  15576.659902872   6  20932  20932    kworker/u16:0       32      2314582
        15576.659909951  15576.659945501   3  27264  27264               sh       36           -1
        15576.659853285  15576.659971052   7  27265  27265             perf      118      5050741
        [...]

  perf lock:

   - Allow concurrent record and report to support live monitoring of
     kernel lock contention without BPF:

        # perf lock record -a -o- sleep 1 | perf lock contention -i-
         contended   total wait     max wait     avg wait         type   caller

                 2     10.27 us      6.17 us      5.13 us     spinlock   load_balance+0xc03
                 1      5.29 us      5.29 us      5.29 us     rwlock:W   ep_scan_ready_list+0x54
                 1      4.12 us      4.12 us      4.12 us     spinlock   smpboot_thread_fn+0x116
                 1      3.28 us      3.28 us      3.28 us        mutex   pipe_read+0x50

   - Implement -t/--threads option when using BPF:

        $ sudo ./perf lock contention -abt -E 5 sleep 1
         contended  total wait   max wait   avg wait      pid  comm

                 1   740.66 ms  740.66 ms  740.66 ms     1950  nv_queue
                 3   305.50 ms  298.19 ms  101.83 ms     1884  nvidia-modeset/
                 1    25.14 us   25.14 us   25.14 us  2725038  EventManager_De
                12    23.09 us    9.30 us    1.92 us        0  swapper
                 1    20.18 us   20.18 us   20.18 us  2725033  EventManager_De

   - Add -l/--lock-addr to aggregate per-lock-instance contention:

        $ sudo ./perf lock contention -abl sleep 1
         contended  total wait  max wait  avg wait           address  symbol

                 1    36.28 us  36.28 us  36.28 us  ffff92615d6448b8
                 9    10.91 us   1.84 us   1.21 us  ffffffffbaed50c0  rcu_state
                 1    10.49 us  10.49 us  10.49 us  ffff9262ac4f0c80
                 8     4.68 us   1.67 us    585 ns  ffffffffbae07a40  jiffies_lock
                 3     3.03 us   1.45 us   1.01 us  ffff9262277861e0
                 1      924 ns    924 ns    924 ns  ffff926095ba9d20
                 1      436 ns    436 ns    436 ns  ffff9260bfda4f60

  perf record:

   - Add remaining branch filters: "no_cycles", "no_flags" & "hw_index",
     to be used with hardware such as Intel's LBR that allows things
     like stitching stacks of two samples to overcome the limits of the
     number of LBR registers.

  Symbol resolution:

   - Handle .debug files created with 'objcopy --only-keep-debug', where
     program headers are zeroed and thus can't be used for adjustments,
     use the info in the runtime_ss (runtime ELF) instead.

  perf trace:

   - Add BPF based augmenter for the 'perf_event_open's 'struct
     perf_event_attr' argument.

   - Add BPF based augmenter for the 'clock_gettime's 'struct timespec'
     argument.

   - In both cases the syscall tracepoint has just the pointer value, we
     need to hook a BPF program to collect the pointer contents, and
     then, in userspace, pretty print it in 'perf trace'.

  perf list:

   - Introduce JSON output of events.

   - Streamline how the expression specifying what events should be
     shown is handled, fixing several corner cases, such as the metric
     filter that is specified as a glob but was using strstr().

  perf probe:

   - Fix to avoid crashing if DW_AT_decl_file is NULL, coping with clang
     generating DWARF5 like that.

   - Use dwarf_attr_integrate() as generic DWARF attr accessor as it
     supersedes dwarf_attr(), supporting abstact origin DIEs.

  perf inject:

   - Set PERF_RECORD_MISC_BUILD_ID_SIZE in the PERF_RECORD_HEADER_BUILD_ID
     so that perf.data readers can get the real build-id size and avoid
     trailing zeroes.

  perf data:

   - Add tracepoint fields when converting a perf.data file to JSON.

  arm64:

   - Fix mksyscalltbl, don't lose syscalls due to sort -nu.

   - Add Arm Neoverse V2 PMU events.

  riscv:

   - Add riscv sbi firmware std event files.

   - Add Sifive U74 vendor events (JSON) file.

   - Add some more events and metrics for Alderlake/Alderlake-N.

  Documentation:

   - Add data documentation for the PMU structs in the C source code.

  Miscellaneous:

   - Periodic sanitization of headers, adding missing includes, removing
     needless ones, creating new ones, etc.

   - Use sig_atomic_t for signal handlers to avoid undefined behaviour
     in all perf tools.

   - Fixes for libbpf 1.0+ compatibility (maps, etc) on 'perf trace' BPF
     examples.

   - Remove some old perf bpf examples, leave the best ones that
     demonstrate how to associate BPF functions to points in the kernel.

   - Make quiet mode consistent between tools.

   - Use dedicated non-atomic clear/set bit helpers.

   - Use "grep -E" instead of "egrep" as recommended by warning emitted
     by GNU grep since at least version 3.8.

   - Complete list of supported subcommands in the 'perf daemon' help
     message.

   - Update John Garry's email address for arm64 perf tooling on the
     MAINTAINERS file, he moved from Huawei to Oracle"

* tag 'perf-tools-for-v6.2-1-2022-12-16' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux: (239 commits)
  libperf: Fix install_pkgconfig target
  perf tools: Use "grep -E" instead of "egrep"
  perf stat: Do not delay the workload with --delay
  perf evlist: Remove group option.
  perf build: Fix python/perf.so library's name
  perf test arm64: Add attr tests for new VG register
  perf test: Add mechanism for skipping attr tests on kernel versions
  perf test: Add mechanism for skipping attr tests on auxiliary vector values
  perf test: Add ability to test exit code for attr tests
  perf test: add new task-analyzer tests
  perf script: task-analyzer add csv support
  perf script: Introduce task analyzer python script
  perf cs-etm: Print auxtrace info even if OpenCSD isn't linked
  perf cs-etm: Cleanup cs_etm__process_auxtrace_info()
  perf cs-etm: Tidy up auxtrace info header printing
  perf cs-etm: Remove unused stub methods
  perf cs-etm: Print unknown header version as an error
  perf test: Update perf lock contention test
  perf lock contention: Add -l/--lock-addr option
  perf lock contention: Implement -t/--threads option for BPF
  ...
2022-12-16 13:21:20 -06:00
Linus Torvalds
dcde56bb37 Fix mismerge due to devnode now taking a 'const *' device
This was a mismerge of a semantic conflict in my merge of the driver
core updates, where commit ff62b8e658 ("driver core: make struct
class.devnode() take a const *") changed the devnode function pointer
type.  In the meantime, the drm tree I merged earlier had introduced a
new use of that in commit 8bf4889762 ("drivers/accel: define kconfig
and register a new major").

And of course this happens when I'm traveling with my laptop, and thus
didn't do a full allmodconfig build between every pull and before
pushing my work out.

So I only noticed later as I was doing my full build.

Brown-paper-bag-by: Linus Torvalds <torvalds@linux-foundation.org>
Fixes: 71a7507afb Merge tag 'driver-core-6.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2022-12-16 13:04:15 -06:00
Krzysztof Kozlowski
3367934dd3 dt-bindings: drop redundant part of title (manual)
The Devicetree bindings document does not have to say in the title that
it is a "Devicetree binding" or a "schema", but instead just describe
the hardware.

Manual updates to various binding titles, including capitalizing them.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Acked-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Acked-by: Ulf Hansson <ulf.hansson@linaro.org> # MMC
Acked-by: Stephen Boyd <sboyd@kernel.org> # clk
Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> # input
Acked-by: Mark Brown <broonie@kernel.org>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org> # opp
Link: https://lore.kernel.org/r/20221216163815.522628-10-krzysztof.kozlowski@linaro.org
[robh: add trivial-devices.yaml and net/can/microchip,mcp251xfd.yaml]
Signed-off-by: Rob Herring <robh@kernel.org>
2022-12-16 12:51:43 -06:00
Krzysztof Kozlowski
33cd7c6fff dt-bindings: clock: drop redundant part of title
The Devicetree bindings document does not have to say in the title that
it is a "Devicetree binding", but instead just describe the hardware.

Drop "Devicetree bindings" in various forms:

  find Documentation/devicetree/bindings/ -type f -name '*.yaml' \
    -exec sed -i -e 's/^title: [dD]evice[ -]\?[tT]ree [cC]lock [bB]indings\? for \([tT]he \)\?\(.*\)$/title: \u\2 Clock Controller/' {} \;

  find Documentation/devicetree/bindings/ -type f -name '*.yaml' \
    -exec sed -i -e 's/^title: [cC]lock [bB]indings\? for \([tT]he \)\?\(.*\)$/title: \u\2 Clock Controller/' {} \;

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Acked-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Acked-by: Ulf Hansson <ulf.hansson@linaro.org> # MMC
Acked-by: Stephen Boyd <sboyd@kernel.org> # clk
Link: https://lore.kernel.org/r/20221216163815.522628-9-krzysztof.kozlowski@linaro.org
Signed-off-by: Rob Herring <robh@kernel.org>
2022-12-16 11:41:49 -06:00
Krzysztof Kozlowski
9d69d47fd3 dt-bindings: drop redundant part of title (beginning)
The Devicetree bindings document does not have to say in the title that
it is a "Devicetree binding", but instead just describe the hardware.

Drop beginning "Devicetree bindings" in various forms:

  find Documentation/devicetree/bindings/ -type f -name '*.yaml' \
    -exec sed -i -e 's/^title: [dD]evice[ -]\?[tT]ree [bB]indings\? for \([tT]he \)\?\(.*\)$/title: \u\2/' {} \;

  find Documentation/devicetree/bindings/ -type f -name '*.yaml' \
    -exec sed -i -e 's/^title: [bB]indings\? for \([tT]he \)\?\(.*\)$/title: \u\2/' {} \;

  find Documentation/devicetree/bindings/ -type f -name '*.yaml' \
    -exec sed -i -e 's/^title: [dD][tT] [bB]indings\? for \([tT]he \)\?\(.*\)$/title: \u\2/' {} \;

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Acked-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Acked-by: Ulf Hansson <ulf.hansson@linaro.org> # MMC
Acked-by: Stephen Boyd <sboyd@kernel.org> # clk
Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> # input
Acked-by: Mark Brown <broonie@kernel.org>
Acked-by: Sebastian Reichel <sre@kernel.org> # power
Link: https://lore.kernel.org/r/20221216163815.522628-8-krzysztof.kozlowski@linaro.org
Signed-off-by: Rob Herring <robh@kernel.org>
2022-12-16 11:41:49 -06:00
Krzysztof Kozlowski
84e85359f4 dt-bindings: drop redundant part of title (end, part three)
The Devicetree bindings document does not have to say in the title that
it is a "binding", but instead just describe the hardware.

Drop trailing "bindings" in various forms (also with trailing full
stop):

  find Documentation/devicetree/bindings/ -type f -name '*.yaml' \
    -not -name 'trivial-devices.yaml' \
    -exec sed -i -e 's/^title: \(.*\) [bB]indings\?\.\?$/title: \1/' {} \;

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Acked-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Acked-by: Matti Vaittinen <mazziesaccount@gmail.com> # ROHM
Acked-by: Ulf Hansson <ulf.hansson@linaro.org> # MMC
Acked-by: Stephen Boyd <sboyd@kernel.org> # clk
Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> # input
Acked-by: Mark Brown <broonie@kernel.org>
Acked-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> # media
Acked-by: Sebastian Reichel <sre@kernel.org> # power
Acked-by: Viresh Kumar <viresh.kumar@linaro.org> # cpufreq
Link: https://lore.kernel.org/r/20221216163815.522628-7-krzysztof.kozlowski@linaro.org
Signed-off-by: Rob Herring <robh@kernel.org>
2022-12-16 11:41:49 -06:00
Krzysztof Kozlowski
9fa3ad1a1a dt-bindings: drop redundant part of title (end, part two)
The Devicetree bindings document does not have to say in the title that
it is a "binding", but instead just describe the hardware.

Drop trailing "Node|Tree|Generic bindings" in various forms (also with
trailing full stop):

  find Documentation/devicetree/bindings/ -type f -name '*.yaml' \
    -not -name 'trivial-devices.yaml' \
    -exec sed -i -e 's/^title: \(.*\) [nN]ode [bB]indings\?\.\?$/title: \1/' {} \;

  find Documentation/devicetree/bindings/ -type f -name '*.yaml' \
    -not -name 'trivial-devices.yaml' \
    -exec sed -i -e 's/^title: \(.*\) [tT]ree [bB]indings\?\.\?$/title: \1/' {} \;

  find Documentation/devicetree/bindings/ -type f -name '*.yaml' \
    -not -name 'trivial-devices.yaml' \
    -exec sed -i -e 's/^title: \(.*\) [gG]eneric [bB]indings\?\.\?$/title: \1/' {} \;

  find Documentation/devicetree/bindings/ -type f -name '*.yaml' \
    -not -name 'trivial-devices.yaml' \
    -exec sed -i -e 's/^title: \(.*\) [bB]indings\? description\.\?$/title: \1/' {} \;

  find Documentation/devicetree/bindings/ -type f -name '*.yaml' \
    -not -name 'trivial-devices.yaml' \
    -exec sed -i -e 's/^title: \(.*\) [bB]indings\? document\.\?$/title: \1/' {} \;

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Acked-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Acked-by: Ulf Hansson <ulf.hansson@linaro.org> # MMC
Acked-by: Stephen Boyd <sboyd@kernel.org> # clk
Acked-by: Vinod Koul <vkoul@kernel.org> # phy
Acked-by: Mark Brown <broonie@kernel.org>
Link: https://lore.kernel.org/r/20221216163815.522628-6-krzysztof.kozlowski@linaro.org
Signed-off-by: Rob Herring <robh@kernel.org>
2022-12-16 11:41:49 -06:00
Krzysztof Kozlowski
a612130ca1 dt-bindings: drop redundant part of title (end)
The Devicetree bindings document does not have to say in the title that
it is a "Devicetree binding", but instead just describe the hardware.

Drop trailing "Devicetree bindings" in various forms (also with
trailing full stop):

  find Documentation/devicetree/bindings/ -type f -name '*.yaml' \
    -not -name 'trivial-devices.yaml' \
    -exec sed -i -e 's/^title: \(.*\) [dD]evice[ -]\?[tT]ree [bB]indings\?\.\?$/title: \1/' {} \;

  find Documentation/devicetree/bindings/ -type f -name '*.yaml' \
    -not -name 'trivial-devices.yaml' \
    -exec sed -i -e 's/^title: \(.*\) [dD]evice[ -]\?[nN]ode [bB]indings\?\.\?$/title: \1/' {} \;

  find Documentation/devicetree/bindings/ -type f -name '*.yaml' \
    -not -name 'trivial-devices.yaml' \
    -exec sed -i -e 's/^title: \(.*\) [dD][tT] [bB]indings\?\.\?$/title: \1/' {} \;

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Acked-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Acked-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> # IIO
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Acked-by: Ulf Hansson <ulf.hansson@linaro.org> # MMC
Acked-by: Stephen Boyd <sboyd@kernel.org> # clk
Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> # input
Acked-by: Mark Brown <broonie@kernel.org>
Acked-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> # media
Acked-by: Sebastian Reichel <sre@kernel.org> # power
Link: https://lore.kernel.org/r/20221216163815.522628-5-krzysztof.kozlowski@linaro.org
Signed-off-by: Rob Herring <robh@kernel.org>
2022-12-16 11:41:49 -06:00
Krzysztof Kozlowski
a0c2153dcf dt-bindings: clock: st,stm32mp1-rcc: add proper title
Add device name in the title, because "Reset Clock Controller" sounds
too generic.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Acked-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Acked-by: Ulf Hansson <ulf.hansson@linaro.org> # MMC
Acked-by: Stephen Boyd <sboyd@kernel.org>
Link: https://lore.kernel.org/r/20221216163815.522628-4-krzysztof.kozlowski@linaro.org
Signed-off-by: Rob Herring <robh@kernel.org>
2022-12-16 11:41:49 -06:00
Krzysztof Kozlowski
9d94e28505 dt-bindings: memory-controllers: ti,gpmc-child: drop redundant part of title
The Devicetree bindings document does not have to say in the title that
it is a "Devicetree binding", but instead just describe the hardware.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Acked-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Acked-by: Ulf Hansson <ulf.hansson@linaro.org> # MMC
Link: https://lore.kernel.org/r/20221216163815.522628-3-krzysztof.kozlowski@linaro.org
Signed-off-by: Rob Herring <robh@kernel.org>
2022-12-16 11:41:49 -06:00
Krzysztof Kozlowski
ab040c4223 dt-bindings: drop redundant part of title of shared bindings
The Devicetree bindings document does not have to say in the title that
it is a "binding", but instead just describe the hardware.  For shared
(re-usable) schemas, name them all as "common properties".

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Acked-by: Guenter Roeck <linux@roeck-us.net> # watchdog
Acked-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Acked-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> # IIO
Acked-by: Miquel Raynal <miquel.raynal@bootlin.com>
Acked-by: Ulf Hansson <ulf.hansson@linaro.org> # MMC
Acked-by: Stephen Boyd <sboyd@kernel.org> # clk
Acked-by: Vinod Koul <vkoul@kernel.org> # dma
Acked-by: Mark Brown <broonie@kernel.org>
Acked-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> # media
Acked-by: Sebastian Reichel <sre@kernel.org> # power
Acked-by: Viresh Kumar <viresh.kumar@linaro.org> # opp
Link: https://lore.kernel.org/r/20221216163815.522628-2-krzysztof.kozlowski@linaro.org
Signed-off-by: Rob Herring <robh@kernel.org>
2022-12-16 11:41:49 -06:00
Marek Vasut
e21a77d8da dt-bindings: watchdog: gpio: Convert bindings to YAML
Convert the gpio-wdt bindings from text to YAML ones, to permit DT validation.

Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Marek Vasut <marex@denx.de>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/20221107160338.27910-1-marex@denx.de
[robh: add missing 'always-running']
Signed-off-by: Rob Herring <robh@kernel.org>
2022-12-16 11:41:49 -06:00
Marek Vasut
1a2cead15b dt-bindings: imx6q-pcie: Handle more resets on legacy platforms
The i.MX6 and i.MX7D does not use block controller to toggle PCIe
reset, hence the PCIe DT description contains three reset entries
on these older SoCs. Add this exception into the binding document.

Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Marek Vasut <marex@denx.de>
Link: https://lore.kernel.org/r/20221211024859.672076-3-marex@denx.de
Signed-off-by: Rob Herring <robh@kernel.org>
2022-12-16 11:41:49 -06:00
Marek Vasut
8b8161edf1 dt-bindings: imx6q-pcie: Handle various PD configurations
The i.MX SoCs have various power domain configurations routed into
the PCIe IP. MX6SX is the only one which contains 2 domains and also
uses power-domain-names. MX6QDL do not use any domains. All the rest
uses one domain and does not use power-domain-names anymore.

Document all those configurations in the DT binding document.

Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Marek Vasut <marex@denx.de>
Link: https://lore.kernel.org/r/20221211024859.672076-2-marex@denx.de
Signed-off-by: Rob Herring <robh@kernel.org>
2022-12-16 11:41:48 -06:00
Marek Vasut
22c9f19002 dt-bindings: imx6q-pcie: Handle various clock configurations
The i.MX SoCs have various clock configurations routed into the PCIe IP,
the list of clock is below. Document all those configurations in the DT
binding document.

All SoCs: pcie, pcie_bus
6QDL, 7D: + pcie_phy
6SX:      + pcie_phy          pcie_inbound_axi
8MQ:      + pcie_phy pcie_aux
8MM, 8MP: +          pcie_aux

Reviewed-by: Rob Herring <robh@kernel.org>
Acked-by: Alexander Stein <alexander.stein@ew.tq-group.com>
Signed-off-by: Marek Vasut <marex@denx.de>
Link: https://lore.kernel.org/r/20221211024859.672076-1-marex@denx.de
Signed-off-by: Rob Herring <robh@kernel.org>
2022-12-16 11:41:48 -06:00
Krzysztof Kozlowski
435beb4110 dt-bindings: hwmon: ntc-thermistor: drop Naveen Krishna Chatradhi from maintainers
Emails to Naveen Krishna Chatradhi bounce ("550 5.1.1 Recipient address
rejected: User unknown").

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20221213100626.36150-1-krzysztof.kozlowski@linaro.org
Signed-off-by: Rob Herring <robh@kernel.org>
2022-12-16 11:41:48 -06:00
Marek Vasut
f62678a77d dt-bindings: mxsfb: Document i.MX8M/i.MX6SX/i.MX6SL power-domains property
The power-domains property is mandatory on i.MX8M Mini, Nano, Plus
and i.MX6SX, i.MX6SL. Document the property and mark it as required
on the aforementioned variants of the IP, present in those SoCs.

Signed-off-by: Marek Vasut <marex@denx.de>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Liu Ying <victor.liu@nxp.com>
Link: https://lore.kernel.org/r/20221213132006.6446-1-marex@denx.de
Signed-off-by: Rob Herring <robh@kernel.org>
2022-12-16 11:41:48 -06:00
Krzysztof Kozlowski
5fa9f7292b dt-bindings: vendor-prefixes: sort entries alphabetically
Sort entries alphabetically.  This was a semi manual job with help of:

  cat Documentation/devicetree/bindings/vendor-prefixes.yaml | grep '":' > old
  cat old | sort > new
  diff -ubB old new

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20221202110536.22230-1-krzysztof.kozlowski@linaro.org
Signed-off-by: Rob Herring <robh@kernel.org>
2022-12-16 11:41:48 -06:00
Thierry Reding
d8a76e46d7 dt-bindings: usb: tegra-xusb: Remove path references
Unresolved path references are now flagged as errors when checking the
device tree binding examples, so convert them into label references.

Reported-by: Conor Dooley <conor.dooley@microchip.com>
Suggested-by: Rob Herring <robh+dt@kernel.org>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Acked-by: Rob Herring <robh@kernel.org>
Tested-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20221130154111.1655603-1-thierry.reding@gmail.com
Signed-off-by: Rob Herring <robh@kernel.org>
2022-12-16 11:41:48 -06:00
Alexander Sverdlin
a7d550f82b of: fdt: Honor CONFIG_CMDLINE* even without /chosen node
I do not read a strict requirement on /chosen node in either ePAPR or in
Documentation/devicetree. Help text for CONFIG_CMDLINE and
CONFIG_CMDLINE_EXTEND doesn't make their behavior explicitly dependent on
the presence of /chosen or the presense of /chosen/bootargs.

However the early check for /chosen and bailing out in
early_init_dt_scan_chosen() skips CONFIG_CMDLINE handling which is not
really related to /chosen node or the particular method of passing cmdline
from bootloader.

This leads to counterintuitive combinations (assuming
CONFIG_CMDLINE_EXTEND=y):

a) bootargs="foo", CONFIG_CMDLINE="bar" => cmdline=="foo bar"
b) /chosen missing, CONFIG_CMDLINE="bar" => cmdline==""
c) bootargs="", CONFIG_CMDLINE="bar" => cmdline==" bar"

Move CONFIG_CMDLINE handling outside of early_init_dt_scan_chosen() so that
cases b and c above result in the same cmdline.

Signed-off-by: Alexander Sverdlin <alexander.sverdlin@gmail.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Link: https://lore.kernel.org/r/11af73e05bad75e4ef49067515e3214f6d944b3d.camel@gmail.com
Signed-off-by: Rob Herring <robh@kernel.org>
2022-12-16 11:22:58 -06:00
Thomas Gleixner
e982ad82bd genirq/msi: Return MSI_XA_DOMAIN_SIZE as the maximum MSI index when no domain is present
On architectures such as s390 that do not use irq domains for MSI,
returning 0 as the maximum MSI index is a bit counter-productive,
as it indicates that no MSI can be allocated. Bad idea.

Instead, return the maximum we're willing to support in the MSI
backing store (MSI_XA_DOMAIN_SIZE), and let the arch code do its
usual thing.

Thanks to Matthew Rosato for fixing the fix.

Reported-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
[maz: commit message]
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/87fsdgzpqs.ffs@tglx
2022-12-16 14:04:04 +00:00
Marc Zyngier
db3568fd80 genirq/msi: Check for the presence of an irq domain when validating msi_ctrl
For architectures such as s390 and powerpc that do not use
irq domains for MSIs, dev->msi.domain is always NULL, so
the per-device, per-bus MSI domain is also guaranteed to
be NULL.

So checking one without checking the other is bound to result
in a splat, followed by a memory leak as we don't free the MSI
descriptors.

Add the missing check.

Reported-by: Matthew Rosato <mjrosato@linux.ibm.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/e570e70d-19bc-101b-0481-ff9a3cab3504@linux.ibm.com
2022-12-16 13:27:18 +00:00
Alexander Gordeev
4ff17c448a libperf: Fix install_pkgconfig target
Commit 47e02b94a4 ("tools lib perf: Add dependency test to install_headers")
misses the notion of $(DESTDIR_SQ) for install_pkgconfig target, which leads to
error:

  install: cannot create regular file '/usr/lib64/pkgconfig/libperf.pc': Permission denied
  make: *** [Makefile:210: install_pkgconfig] Error 1

Signed-off-by: Alexander Gordeev <agordeev@linux.ibm.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Josh Poimboeuf <jpoimboe@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Masahiro Yamada <masahiroy@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Nathan Chancellor <nathan@kernel.org>
Cc: Nick Desaulniers <ndesaulniers@google.com>
Cc: Nicolas Schier <nicolas@fjasle.eu>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Tom Rix <trix@redhat.com>
Cc: bpf@vger.kernel.org
Cc: llvm@lists.linux.dev
Link: http://lore.kernel.org/lkml/Y5w/cWKyb8vpNMfA@li-4a3a4a4c-28e5-11b2-a85c-a8d192c6f089.ibm.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-12-16 10:04:06 -03:00
Michael Ellerman
980411a4d1 powerpc/code-patching: Fix oops with DEBUG_VM enabled
Nathan reported that the new per-cpu mm patching oopses if DEBUG_VM is
enabled:

  ------------[ cut here ]------------
  kernel BUG at arch/powerpc/mm/pgtable.c:333!
  Oops: Exception in kernel mode, sig: 5 [#1]
  LE PAGE_SIZE=64K MMU=Radix SMP NR_CPUS=2048 NUMA PowerNV
  Modules linked in:
  CPU: 0 PID: 1 Comm: swapper/0 Not tainted 6.1.0-rc2+ #1
  Hardware name: IBM PowerNV (emulated by qemu) POWER9 0x4e1200 opal:v7.0 PowerNV
  ...
  NIP assert_pte_locked+0x180/0x1a0
  LR  assert_pte_locked+0x170/0x1a0
  Call Trace:
    0x60000000 (unreliable)
    patch_instruction+0x618/0x6d0
    arch_prepare_kprobe+0xfc/0x2d0
    register_kprobe+0x520/0x7c0
    arch_init_kprobes+0x28/0x3c
    init_kprobes+0x108/0x184
    do_one_initcall+0x60/0x2e0
    kernel_init_freeable+0x1f0/0x3e0
    kernel_init+0x34/0x1d0
    ret_from_kernel_thread+0x5c/0x64

It's caused by the assert_spin_locked() failing in assert_pte_locked().
The assert fails because the PTE was unlocked in text_area_cpu_up_mm(),
and never relocked.

The PTE page shouldn't be freed, the patching_mm is only used for
patching on this CPU, only that single PTE is ever mapped, and it's only
unmapped at CPU offline.

In fact assert_pte_locked() has a special case to ignore init_mm
entirely, and the patching_mm is more-or-less like init_mm, so possibly
the check could be skipped for patching_mm too.

But for now be conservative, and use the proper PTE accessors at
patching time, so that the PTE lock is held while the PTE is used. That
also avoids the warning in assert_pte_locked().

With that it's no longer necessary to save the PTE in
cpu_patching_context for the mm_patch_enabled() case.

Fixes: c28c15b6d2 ("powerpc/code-patching: Use temporary mm for Radix MMU")
Reported-by: Nathan Chancellor <nathan@kernel.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20221216125913.990972-1-mpe@ellerman.id.au
2022-12-16 23:59:43 +11:00
Arnaldo Carvalho de Melo
1a931707ad Merge remote-tracking branch 'torvalds/master' into perf/core
To resolve a trivial merge conflict with c302378bc1 ("libbpf:
Hashmap interface update to allow both long and void* keys/values"),
where a function present upstream was removed in the perf tools
development tree.

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-12-16 09:53:53 -03:00
Linus Torvalds
71a7507afb Driver Core changes for 6.2-rc1
Here is the set of driver core and kernfs changes for 6.2-rc1.
 
 The "big" change in here is the addition of a new macro,
 container_of_const() that will preserve the "const-ness" of a pointer
 passed into it.
 
 The "problem" of the current container_of() macro is that if you pass in
 a "const *", out of it can comes a non-const pointer unless you
 specifically ask for it.  For many usages, we want to preserve the
 "const" attribute by using the same call.  For a specific example, this
 series changes the kobj_to_dev() macro to use it, allowing it to be used
 no matter what the const value is.  This prevents every subsystem from
 having to declare 2 different individual macros (i.e.
 kobj_const_to_dev() and kobj_to_dev()) and having the compiler enforce
 the const value at build time, which having 2 macros would not do
 either.
 
 The driver for all of this have been discussions with the Rust kernel
 developers as to how to properly mark driver core, and kobject, objects
 as being "non-mutable".  The changes to the kobject and driver core in
 this pull request are the result of that, as there are lots of paths
 where kobjects and device pointers are not modified at all, so marking
 them as "const" allows the compiler to enforce this.
 
 So, a nice side affect of the Rust development effort has been already
 to clean up the driver core code to be more obvious about object rules.
 
 All of this has been bike-shedded in quite a lot of detail on lkml with
 different names and implementations resulting in the tiny version we
 have in here, much better than my original proposal.  Lots of subsystem
 maintainers have acked the changes as well.
 
 Other than this change, included in here are smaller stuff like:
   - kernfs fixes and updates to handle lock contention better
   - vmlinux.lds.h fixes and updates
   - sysfs and debugfs documentation updates
   - device property updates
 
 All of these have been in the linux-next tree for quite a while with no
 problems, OTHER than some merge issues with other trees that should be
 obvious when you hit them (block tree deletes a driver that this tree
 modifies, iommufd tree modifies code that this tree also touches).  If
 there are merge problems with these trees, please let me know.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'driver-core-6.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core

Pull driver core updates from Greg KH:
 "Here is the set of driver core and kernfs changes for 6.2-rc1.

  The "big" change in here is the addition of a new macro,
  container_of_const() that will preserve the "const-ness" of a pointer
  passed into it.

  The "problem" of the current container_of() macro is that if you pass
  in a "const *", out of it can comes a non-const pointer unless you
  specifically ask for it. For many usages, we want to preserve the
  "const" attribute by using the same call. For a specific example, this
  series changes the kobj_to_dev() macro to use it, allowing it to be
  used no matter what the const value is. This prevents every subsystem
  from having to declare 2 different individual macros (i.e.
  kobj_const_to_dev() and kobj_to_dev()) and having the compiler enforce
  the const value at build time, which having 2 macros would not do
  either.

  The driver for all of this have been discussions with the Rust kernel
  developers as to how to properly mark driver core, and kobject,
  objects as being "non-mutable". The changes to the kobject and driver
  core in this pull request are the result of that, as there are lots of
  paths where kobjects and device pointers are not modified at all, so
  marking them as "const" allows the compiler to enforce this.

  So, a nice side affect of the Rust development effort has been already
  to clean up the driver core code to be more obvious about object
  rules.

  All of this has been bike-shedded in quite a lot of detail on lkml
  with different names and implementations resulting in the tiny version
  we have in here, much better than my original proposal. Lots of
  subsystem maintainers have acked the changes as well.

  Other than this change, included in here are smaller stuff like:

   - kernfs fixes and updates to handle lock contention better

   - vmlinux.lds.h fixes and updates

   - sysfs and debugfs documentation updates

   - device property updates

  All of these have been in the linux-next tree for quite a while with
  no problems"

* tag 'driver-core-6.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (58 commits)
  device property: Fix documentation for fwnode_get_next_parent()
  firmware_loader: fix up to_fw_sysfs() to preserve const
  usb.h: take advantage of container_of_const()
  device.h: move kobj_to_dev() to use container_of_const()
  container_of: add container_of_const() that preserves const-ness of the pointer
  driver core: fix up missed drivers/s390/char/hmcdrv_dev.c class.devnode() conversion.
  driver core: fix up missed scsi/cxlflash class.devnode() conversion.
  driver core: fix up some missing class.devnode() conversions.
  driver core: make struct class.devnode() take a const *
  driver core: make struct class.dev_uevent() take a const *
  cacheinfo: Remove of_node_put() for fw_token
  device property: Add a blank line in Kconfig of tests
  device property: Rename goto label to be more precise
  device property: Move PROPERTY_ENTRY_BOOL() a bit down
  device property: Get rid of __PROPERTY_ENTRY_ARRAY_EL*SIZE*()
  kernfs: fix all kernel-doc warnings and multiple typos
  driver core: pass a const * into of_device_uevent()
  kobject: kset_uevent_ops: make name() callback take a const *
  kobject: kset_uevent_ops: make filter() callback take a const *
  kobject: make kobject_namespace take a const *
  ...
2022-12-16 03:54:54 -08:00
Linus Torvalds
ba54ff1fb6 Char/Misc driver changes for 6.2-rc1
Here is the large set of char/misc and other driver subsystem changes
 for 6.2-rc1.  Nothing earth-shattering in here at all, just a lot of new
 driver development and minor fixes.  Highlights include:
  - fastrpc driver updates
  - iio new drivers and updates
  - habanalabs driver updates for new hardware and features
  - slimbus driver updates
  - speakup module parameters added to aid in boot time configuration
  - i2c probe_new conversions for lots of different drivers
  - other small driver fixes and additions
 
 One semi-interesting change in here is the increase of the number of
 misc dynamic minors available to 1048448 to handle new huge-cpu systems.
 
 All of these have been in linux-next for a while with no reported
 problems.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'char-misc-6.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc

Pull char/misc driver updates from Greg KH:
 "Here is the large set of char/misc and other driver subsystem changes
  for 6.2-rc1. Nothing earth-shattering in here at all, just a lot of
  new driver development and minor fixes.

  Highlights include:

   - fastrpc driver updates

   - iio new drivers and updates

   - habanalabs driver updates for new hardware and features

   - slimbus driver updates

   - speakup module parameters added to aid in boot time configuration

   - i2c probe_new conversions for lots of different drivers

   - other small driver fixes and additions

  One semi-interesting change in here is the increase of the number of
  misc dynamic minors available to 1048448 to handle new huge-cpu
  systems.

  All of these have been in linux-next for a while with no reported
  problems"

* tag 'char-misc-6.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (521 commits)
  extcon: usbc-tusb320: Convert to i2c's .probe_new()
  extcon: rt8973: Convert to i2c's .probe_new()
  extcon: fsa9480: Convert to i2c's .probe_new()
  extcon: max77843: Replace irqchip mask_invert with unmask_base
  chardev: fix error handling in cdev_device_add()
  mcb: mcb-parse: fix error handing in chameleon_parse_gdd()
  drivers: mcb: fix resource leak in mcb_probe()
  coresight: etm4x: fix repeated words in comments
  coresight: cti: Fix null pointer error on CTI init before ETM
  coresight: trbe: remove cpuhp instance node before remove cpuhp state
  counter: stm32-lptimer-cnt: fix the check on arr and cmp registers update
  misc: fastrpc: Add dma_mask to fastrpc_channel_ctx
  misc: fastrpc: Add mmap request assigning for static PD pool
  misc: fastrpc: Safekeep mmaps on interrupted invoke
  misc: fastrpc: Add support for audiopd
  misc: fastrpc: Rework fastrpc_req_munmap
  misc: fastrpc: Use fastrpc_map_put in fastrpc_map_create on fail
  misc: fastrpc: Add fastrpc_remote_heap_alloc
  misc: fastrpc: Add reserved mem support
  misc: fastrpc: Rename audio protection domain to root
  ...
2022-12-16 03:49:24 -08:00
Linus Torvalds
dd6f9b17cd TTY/Serial driver changes for 6.2-rc1
Here is the "big" set of tty/serial driver changes for 6.2-rc1.
 
 As in previous kernel releases, nothing big here at all, just some small
 incremental serial/tty layer cleanups and some individual driver
 additions and fixes.  Highlights are:
   - serial helper macros from Jiri Slaby to reduce the amount of
     duplicated code in serial drivers
   - api cleanups and consolidations from Ilpo Järvinen in lots of serial
     drivers
   - the usual set of n_gsm fixes from Daniel Starke as that code gets
     exercised more
   - TIOCSTI is finally able to be disabled if requested (security
     hardening feature from Kees Cook)
   - fsl_lpuart driver fixes and features added
   - other small serial driver additions and fixes
 
 All of these have been in linux-next for a while with no reported
 problems.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'tty-6.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty

Pull tty/serial driver updates from Greg KH:
 "Here is the "big" set of tty/serial driver changes for 6.2-rc1.

  As in previous kernel releases, nothing big here at all, just some
  small incremental serial/tty layer cleanups and some individual driver
  additions and fixes. Highlights are:

   - serial helper macros from Jiri Slaby to reduce the amount of
     duplicated code in serial drivers

   - api cleanups and consolidations from Ilpo Järvinen in lots of
     serial drivers

   - the usual set of n_gsm fixes from Daniel Starke as that code gets
     exercised more

   - TIOCSTI is finally able to be disabled if requested (security
     hardening feature from Kees Cook)

   - fsl_lpuart driver fixes and features added

   - other small serial driver additions and fixes

  All of these have been in linux-next for a while with no reported
  problems"

* tag 'tty-6.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty: (97 commits)
  serial: atmel: don't stop the transmitter when doing PIO
  serial: atmel: cleanup atmel_start+stop_tx()
  tty: serial: fsl_lpuart: switch to new dmaengine_terminate_* API
  serial: sunsab: Fix error handling in sunsab_init()
  serial: altera_uart: fix locking in polling mode
  serial: pch: Fix PCI device refcount leak in pch_request_dma()
  tty: serial: fsl_lpuart: Use pm_ptr() to avoid need to make pm __maybe_unused
  tty: serial: fsl_lpuart: Add runtime pm support
  tty: serial: fsl_lpuart: enable wakeup source for lpuart
  serdev: Replace poll loop by readx_poll_timeout() macro
  tty: synclink_gt: unwind actions in error path of net device open
  serial: stm32: move dma_request_chan() before clk_prepare_enable()
  dt-bindings: serial: xlnx,opb-uartlite: Drop 'contains' from 'xlnx,use-parity'
  serial: pl011: Do not clear RX FIFO & RX interrupt in unthrottle.
  serial: amba-pl011: avoid SBSA UART accessing DMACR register
  tty: serial: altera_jtaguart: remove struct altera_jtaguart
  tty: serial: altera_jtaguart: use uart_port::read_status_mask
  tty: serial: altera_jtaguart: remove unused altera_jtaguart::sigs
  tty: serial: altera_jtaguart: remove flag from altera_jtaguart_rx_chars()
  n_tty: Rename tail to old_tail in n_tty_read()
  ...
2022-12-16 03:31:56 -08:00
Linus Torvalds
b83a7080d3 Staging driver changes for 6.2-rc1
Here is the large set of staging driver changes for 6.2-rc1.
 
 Another round of cleanups for staging drivers with no big additions.
 Overall more lines were removed than added, always a nice sign, with
 nothing happening in here other than general coding style cleanups and
 minor fixes in the drivers.  Full, boring, details are in the shortlog.
 
 All of these have been in linux-next for a while with no reported
 problems.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'staging-6.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging

Pull staging driver updates from Greg KH:
 "Here is the large set of staging driver changes for 6.2-rc1.

  Another round of cleanups for staging drivers with no big additions.
  Overall more lines were removed than added, always a nice sign, with
  nothing happening in here other than general coding style cleanups and
  minor fixes in the drivers. Full, boring, details are in the shortlog.

  All of these have been in linux-next for a while with no reported
  problems"

* tag 'staging-6.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging: (253 commits)
  vme: Use root_device_register() not underlined version
  staging: rtl8192e: Fix spelling mistake "ContryIE" -> "CountryIE"
  vme: Fix error not catched in fake_init()
  staging: vme_user: remove multiple blank lines
  staging: r8188eu: use subtype helper in rtw_check_bcn_info
  staging: r8188eu: use subtype helpers in collect_bss_info
  staging: r8188eu: remove unused da parameter
  staging: r8188eu: merge two probereq_p2p functions
  staging: r8188eu: simplify err handling for unknown station
  staging: r8188eu: handle the non-ap case first
  staging: r8188eu: move bBusyTraffic update
  staging: r8188eu: read reason code from ieee80211_mgmt
  staging: r8188eu: use ieee80211_mgmt to parse addresses
  staging: r8188eu: remove a variable
  staging: r8188eu: simplify error handling for missing station
  staging: r8188eu: stop beacon processing if kmalloc fails
  staging: r8188eu: exit if beacon is not from our bss
  staging: r8188eu: simplify update_sta_support_rate params
  staging: r8188eu: use ie buffer in update_beacon_info
  staging: r8188eu: pass only ies to process_p2p_ps_ie
  ...
2022-12-16 03:27:03 -08:00
Linus Torvalds
58bcac11fd USB/Thunderbolt driver changes for 6.2-rc1
Here is the large set of USB and Thunderbolt driver changes for 6.2-rc1.
 Overall, thanks to the removal of a driver, more lines were removed than
 added, a nice change.  Highlights include:
   - removal of the sisusbvga driver that was not used by anyone anymore
   - minor thunderbolt driver changes and tweaks
   - chipidea driver updates
   - usual set of typec driver features and hardware support added
   - musb minor driver fixes
   - fotg210 driver fixes, bringing that hardware back from the "dead"
   - minor dwc3 driver updates
   - addition, and then removal, of a list.h helper function for many USB
     and other subsystem drivers, that ended up breaking the build.  That
     will come back for 6.3-rc1, it missed this merge window.
   - usual xhci updates and enhancements
   - usb-serial driver updates and support for new devices
   - other minor USB driver updates
 
 All of these have been in linux-next for a while with no reported
 problems.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'usb-6.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb

Pull USB and Thunderbolt driver updates from Greg KH:
 "Here is the large set of USB and Thunderbolt driver changes for
  6.2-rc1. Overall, thanks to the removal of a driver, more lines were
  removed than added, a nice change. Highlights include:

   - removal of the sisusbvga driver that was not used by anyone anymore

   - minor thunderbolt driver changes and tweaks

   - chipidea driver updates

   - usual set of typec driver features and hardware support added

   - musb minor driver fixes

   - fotg210 driver fixes, bringing that hardware back from the "dead"

   - minor dwc3 driver updates

   - addition, and then removal, of a list.h helper function for many
     USB and other subsystem drivers, that ended up breaking the build.
     That will come back for 6.3-rc1, it missed this merge window.

   - usual xhci updates and enhancements

   - usb-serial driver updates and support for new devices

   - other minor USB driver updates

  All of these have been in linux-next for a while with no reported
  problems"

* tag 'usb-6.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (153 commits)
  usb: gadget: uvc: Rename bmInterfaceFlags -> bmInterlaceFlags
  usb: dwc2: power on/off phy for peripheral mode in dual-role mode
  usb: dwc2: disable lpm feature on Rockchip SoCs
  dt-bindings: usb: mtk-xhci: add support for mt7986
  usb: dwc3: core: defer probe on ulpi_read_id timeout
  usb: ulpi: defer ulpi_register on ulpi_read_id timeout
  usb: misc: onboard_usb_hub: add Genesys Logic GL850G hub support
  dt-bindings: usb: Add binding for Genesys Logic GL850G hub controller
  dt-bindings: vendor-prefixes: add Genesys Logic
  usb: fotg210-udc: fix potential memory leak in fotg210_udc_probe()
  usb: typec: tipd: Set mode of operation for USB Type-C connector
  usb: gadget: udc: drop obsolete dependencies on COMPILE_TEST
  usb: musb: remove extra check in musb_gadget_vbus_draw
  usb: gadget: uvc: Prevent buffer overflow in setup handler
  usb: dwc3: qcom: Fix memory leak in dwc3_qcom_interconnect_init
  usb: typec: wusb3801: fix fwnode refcount leak in wusb3801_probe()
  usb: storage: Add check for kcalloc
  USB: sisusbvga: use module_usb_driver()
  USB: sisusbvga: rename sisusb.c to sisusbvga.c
  USB: sisusbvga: remove console support
  ...
2022-12-16 03:22:53 -08:00
Chen-Yu Tsai
ad2631b564 arm64: dts: mt8183: Fix Mali GPU clock
The actual clock feeding into the Mali GPU on the MT8183 is from the
clock gate in the MFGCFG block, not CLK_TOP_MFGPLL_CK from the TOPCKGEN
block, which itself is simply a pass-through placeholder for the MFGPLL
in the APMIXEDSYS block.

Fix the hardware description with the correct clock reference.

Fixes: a8168cebf1 ("arm64: dts: mt8183: Add node for the Mali GPU")
Signed-off-by: Chen-Yu Tsai <wenst@chromium.org>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Tested-by: Nícolas F. R. A. Prado <nfraprado@collabora.com>
Link: https://lore.kernel.org/r/20220927101128.44758-2-angelogioacchino.delregno@collabora.com
Signed-off-by: Matthias Brugger <matthias.bgg@gmail.com>
2022-12-16 11:41:45 +01:00
Macpaul Lin
e4a4175201 arm64: dts: mediatek: mt8195-demo: fix the memory size of node secmon
The size of device tree node secmon (bl31_secmon_reserved) was
incorrect. It should be increased to 2MiB (0x200000).

The origin setting will cause some abnormal behavior due to
trusted-firmware-a and related firmware didn't load correctly.
The incorrect behavior may vary because of different software stacks.
For example, it will cause build error in some Yocto project because
it will check if there was enough memory to load trusted-firmware-a
to the reserved memory.

When mt8195-demo.dts sent to the upstream, at that time the size of
BL31 was small. Because supported functions and modules in BL31 are
basic sets when the board was under early development stage.

Now BL31 includes more firmwares of coprocessors and maturer functions
so the size has grown bigger in real applications. According to the value
reported by customers, we think reserved 2MiB for BL31 might be enough
for maybe the following 2 or 3 years.

Cc: stable@vger.kernel.org      # v5.19
Fixes: 6147314aee ("arm64: dts: mediatek: Add device-tree for MT8195 Demo board")
Signed-off-by: Macpaul Lin <macpaul.lin@mediatek.com>
Reviewed-by: Miles Chen <miles.chen@mediatek.com>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Link: https://lore.kernel.org/r/20221111095540.28881-1-macpaul.lin@mediatek.com
Signed-off-by: Matthias Brugger <matthias.bgg@gmail.com>
2022-12-16 11:41:44 +01:00
Chun-Jie Chen
dba8eb83af soc: mediatek: pm-domains: Fix the power glitch issue
Power reset maybe generate unexpected signal. In order to avoid
the glitch issue, we need to enable isolation first to guarantee the
stable signal when power reset is triggered.

Fixes: 59b644b01c ("soc: mediatek: Add MediaTek SCPSYS power domains")
Signed-off-by: Chun-Jie Chen <chun-jie.chen@mediatek.com>
Signed-off-by: Allen-KH Cheng <allen-kh.cheng@mediatek.com>
Reviewed-by: Chen-Yu Tsai <wenst@chromium.org>
Reviewed-by: Miles Chen <miles.chen@mediatek.com>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Link: https://lore.kernel.org/r/20221014102029.1162-1-allen-kh.cheng@mediatek.com
Signed-off-by: Matthias Brugger <matthias.bgg@gmail.com>
2022-12-16 11:41:18 +01:00
Linus Torvalds
84e57d2922 Description for this pull request:
- simplify and remove some redundant codes handing directory entries
 - optimize the size of exfat_entry_set_cache and its allocation policy
 - improve the performance for creating files and directories
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Merge tag 'exfat-for-6.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/linkinjeon/exfat

Pull exfat update from Namjae Jeon:

 - simplify and remove some redundant directory entry code

 - optimize the size of exfat_entry_set_cache and its allocation policy

 - improve the performance for creating files and directories

* tag 'exfat-for-6.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/linkinjeon/exfat:
  exfat: reuse exfat_find_location() to simplify exfat_get_dentry_set()
  exfat: fix overflow in sector and cluster conversion
  exfat: remove i_size_write() from __exfat_truncate()
  exfat: remove argument 'size' from exfat_truncate()
  exfat: remove unnecessary arguments from exfat_find_dir_entry()
  exfat: remove unneeded codes from __exfat_rename()
  exfat: remove call ilog2() from exfat_readdir()
  exfat: replace magic numbers with Macros
  exfat: rename exfat_free_dentry_set() to exfat_put_dentry_set()
  exfat: move exfat_entry_set_cache from heap to stack
  exfat: support dynamic allocate bh for exfat_entry_set_cache
  exfat: reduce the size of exfat_entry_set_cache
  exfat: hint the empty entry which at the end of cluster chain
  exfat: simplify empty entry hint
2022-12-15 18:14:21 -08:00
Linus Torvalds
23dc9c755a for-6.2/writeback-2022-12-12
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Merge tag 'for-6.2/writeback-2022-12-12' of git://git.kernel.dk/linux

Pull writeback updates from Jens Axboe:

 - Sanity check adding freed inodes to lists (Jan)

 - Removal of an old unused define (Miaohe)

* tag 'for-6.2/writeback-2022-12-12' of git://git.kernel.dk/linux:
  writeback: remove obsolete macro EXPIRE_DIRTY_ATIME
  writeback: Add asserts for adding freed inode to lists
2022-12-15 18:09:48 -08:00
Linus Torvalds
fe36bb8736 Tracing updates for 6.2:
- Add options to the osnoise tracer
   o panic_on_stop option that panics the kernel if osnoise is greater than some
     user defined threshold.
   o preempt option, to test noise while preemption is disabled
   o irq option, to test noise when interrupts are disabled
 
 - Add .percent and .graph suffix to histograms to give different outputs
 
 - Add nohitcount to disable showing hitcount in histogram output
 
 - Add new __cpumask() to trace event fields to annotate that a unsigned long
   array is a cpumask to user space and should be treated as one.
 
 - Add trace_trigger kernel command line parameter to enable trace event
   triggers at boot up. Useful to trace stack traces, disable tracing and take
   snapshots.
 
 - Fix x86/kmmio mmio tracer to work with the updates to lockdep
 
 - Unify the panic and die notifiers
 
 - Add back ftrace_expect reference that is used to extract more information in
   the ftrace_bug() code.
 
 - Have trigger filter parsing errors show up in the tracing error log.
 
 - Updated MAINTAINERS file to add kernel tracing  mailing list and patchwork
   info
 
 - Use IDA to keep track of event type numbers.
 
 - And minor fixes and clean ups
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Merge tag 'trace-v6.2' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace

Pull tracing updates from Steven Rostedt:

 - Add options to the osnoise tracer:
      - 'panic_on_stop' option that panics the kernel if osnoise is
        greater than some user defined threshold.
      - 'preempt' option, to test noise while preemption is disabled
      - 'irq' option, to test noise when interrupts are disabled

 - Add .percent and .graph suffix to histograms to give different
   outputs

 - Add nohitcount to disable showing hitcount in histogram output

 - Add new __cpumask() to trace event fields to annotate that a unsigned
   long array is a cpumask to user space and should be treated as one.

 - Add trace_trigger kernel command line parameter to enable trace event
   triggers at boot up. Useful to trace stack traces, disable tracing
   and take snapshots.

 - Fix x86/kmmio mmio tracer to work with the updates to lockdep

 - Unify the panic and die notifiers

 - Add back ftrace_expect reference that is used to extract more
   information in the ftrace_bug() code.

 - Have trigger filter parsing errors show up in the tracing error log.

 - Updated MAINTAINERS file to add kernel tracing mailing list and
   patchwork info

 - Use IDA to keep track of event type numbers.

 - And minor fixes and clean ups

* tag 'trace-v6.2' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace: (44 commits)
  tracing: Fix cpumask() example typo
  tracing: Improve panic/die notifiers
  ftrace: Prevent RCU stall on PREEMPT_VOLUNTARY kernels
  tracing: Do not synchronize freeing of trigger filter on boot up
  tracing: Remove pointer (asterisk) and brackets from cpumask_t field
  tracing: Have trigger filter parsing errors show up in error_log
  x86/mm/kmmio: Remove redundant preempt_disable()
  tracing: Fix infinite loop in tracing_read_pipe on overflowed print_trace_line
  Documentation/osnoise: Add osnoise/options documentation
  tracing/osnoise: Add preempt and/or irq disabled options
  tracing/osnoise: Add PANIC_ON_STOP option
  Documentation/osnoise: Escape underscore of NO_ prefix
  tracing: Fix some checker warnings
  tracing/osnoise: Make osnoise_options static
  tracing: remove unnecessary trace_trigger ifdef
  ring-buffer: Handle resize in early boot up
  tracing/hist: Fix issue of losting command info in error_log
  tracing: Fix issue of missing one synthetic field
  tracing/hist: Fix out-of-bound write on 'action_data.var_ref_idx'
  tracing/hist: Fix wrong return value in parse_action_params()
  ...
2022-12-15 18:01:16 -08:00
Wei Yongjun
f9eeef5918 fault-injection: make stacktrace filter works as expected
stacktrace filter is checked after others, such as fail-nth, interval and
probability.  This make it doesn't work well as expected.

Fix to running stacktrace filter before other filters.  It will speed up
fault inject testing for driver modules.

Link: https://lkml.kernel.org/r/20220817080332.1052710-5-weiyongjun1@huawei.com
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Cc: Akinobu Mita <akinobu.mita@gmail.com>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: Isabella Basso <isabbasso@riseup.net>
Cc: Josh Poimboeuf <jpoimboe@kernel.org>
Cc: Kees Cook <keescook@chromium.org>
Cc: Miguel Ojeda <ojeda@kernel.org>
Cc: Nathan Chancellor <nathan@kernel.org>
Cc: Nick Desaulniers <ndesaulniers@google.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Cc: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2022-12-15 16:40:44 -08:00
Wei Yongjun
0199907474 fault-injection: make some stack filter attrs more readable
Attributes of stack filter are show as unsigned decimal, such as
'require-start', 'require-end'.  This patch change to show them as
unsigned hexadecimal for more readable.

Before:
  $ echo 0xffffffffc0257000 > /sys/kernel/debug/failslab/require-start
  $ cat /sys/kernel/debug/failslab/require-start
  18446744072638263296

After:
  $ echo 0xffffffffc0257000 > /sys/kernel/debug/failslab/require-start
  $ cat /sys/kernel/debug/failslab/require-start
  0xffffffffc0257000

[wangyufen@huawei.com: use debugfs_create_xul() instead of debugfs_create_xl()]
  Link: https://lkml.kernel.org/r/1664331299-4976-1-git-send-email-wangyufen@huawei.com
Link: https://lkml.kernel.org/r/20220817080332.1052710-4-weiyongjun1@huawei.com
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Signed-off-by: Wang Yufen <wangyufen@huawei.com>
Reviewed-by: Akinobu Mita <akinobu.mita@gmail.com>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: Isabella Basso <isabbasso@riseup.net>
Cc: Josh Poimboeuf <jpoimboe@kernel.org>
Cc: Kees Cook <keescook@chromium.org>
Cc: Miguel Ojeda <ojeda@kernel.org>
Cc: Nathan Chancellor <nathan@kernel.org>
Cc: Nick Desaulniers <ndesaulniers@google.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Cc: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2022-12-15 16:40:44 -08:00
Wei Yongjun
4acb9e5139 fault-injection: skip stacktrace filtering by default
If FAULT_INJECTION_STACKTRACE_FILTER is enabled, the depth is default to
32.  This means fail_stacktrace() will iter each entry's stacktrace, even
if filter is not configured.

This patch changes to quick return from fail_stacktrace() if stacktrace
filter is not set.

Link: https://lkml.kernel.org/r/20220817080332.1052710-3-weiyongjun1@huawei.com
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Cc: Akinobu Mita <akinobu.mita@gmail.com>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: Isabella Basso <isabbasso@riseup.net>
Cc: Josh Poimboeuf <jpoimboe@kernel.org>
Cc: Kees Cook <keescook@chromium.org>
Cc: Miguel Ojeda <ojeda@kernel.org>
Cc: Nathan Chancellor <nathan@kernel.org>
Cc: Nick Desaulniers <ndesaulniers@google.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Cc: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2022-12-15 16:40:43 -08:00
Wei Yongjun
a7ebbbb159 fault-injection: allow stacktrace filter for x86-64
This patchset allow fault injection to run on x86_64 and makes stacktrace
filter work as expected.  With this, we can test a device driver module
with fault injection more easily.


This patch (of 4):

FAULT_INJECTION_STACKTRACE_FILTER option was apparently disallowed on
x86_64 because of problems with the stack unwinder:

    commit 6d690dcac9
    Author: Akinobu Mita <akinobu.mita@gmail.com>
    Date:   Sat May 12 10:36:53 2007 -0700

        fault injection: disable stacktrace filter for x86-64

However, there is no problems whatsoever with this today. Let's allow
it again.

Link: https://lkml.kernel.org/r/20220817080332.1052710-1-weiyongjun1@huawei.com
Link: https://lkml.kernel.org/r/20220817080332.1052710-2-weiyongjun1@huawei.com
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Cc: Akinobu Mita <akinobu.mita@gmail.com>
Cc: Nathan Chancellor <nathan@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Kees Cook <keescook@chromium.org>
Cc: Nick Desaulniers <ndesaulniers@google.com>
Cc: Josh Poimboeuf <jpoimboe@kernel.org>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: Miguel Ojeda <ojeda@kernel.org>
Cc: Isabella Basso <isabbasso@riseup.net>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2022-12-15 16:40:43 -08:00
Minchan Kim
8b777594d2 MAINTAINERS: zram: zsmalloc: Add an additional co-maintainer
Move Sergey to co-maintainer for zram/zsmalloc since he has helped to
contribute/review those areas actively for eight years, which is quite
helpful.  Since Nitin has been inactive for several years, it's time to
move his name into CREDITS.

Link: https://lkml.kernel.org/r/20221213170731.796121-1-minchan@kernel.org
Signed-off-by: Minchan Kim <minchan@kernel.org>
Reviewed-by: Sergey Senozhatsky <senozhatsky@chromium.org>
Cc: Nitin Gupta <ngupta@vflare.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2022-12-15 16:37:49 -08:00
Clément Léger
3a6f33d86b mm/kmemleak: use %pK to display kernel pointers in backtrace
Currently, %p is used to display kernel pointers in backtrace which result
in a hashed value that is not usable to correlate the address for debug. 
Use %pK which will respect the kptr_restrict configuration value and thus
allow to extract meaningful information from the backtrace.

Link: https://lkml.kernel.org/r/20221108094322.73492-1-clement.leger@bootlin.com
Signed-off-by: Clément Léger <clement.leger@bootlin.com>
Cc: Alexandre Belloni <alexandre.belloni@bootlin.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2022-12-15 16:37:49 -08:00
Zhaoyang Huang
56a61617dd mm: use stack_depot for recording kmemleak's backtrace
Using stack_depot to record kmemleak's backtrace which has been
implemented on slub for reducing redundant information.

[akpm@linux-foundation.org: fix build - remove now-unused __save_stack_trace()]
[zhaoyang.huang@unisoc.com: v3]
  Link: https://lkml.kernel.org/r/1667101354-4669-1-git-send-email-zhaoyang.huang@unisoc.com
[akpm@linux-foundation.org: fix v3 layout oddities]
[akpm@linux-foundation.org: coding-style cleanups]
Link: https://lkml.kernel.org/r/1666864224-27541-1-git-send-email-zhaoyang.huang@unisoc.com
Signed-off-by: Zhaoyang Huang <zhaoyang.huang@unisoc.com>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Cc: ke.wang <ke.wang@unisoc.com>
Cc: Matthew Wilcox (Oracle) <willy@infradead.org>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Zhaoyang Huang <huangzhaoyang@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2022-12-15 16:37:49 -08:00
Liam Howlett
9102b78b6f maple_tree: update copyright dates for test code
Add the span to the year of the development.

Link: https://lkml.kernel.org/r/20221025173709.2718725-1-Liam.Howlett@oracle.com
Signed-off-by: Liam R. Howlett <Liam.Howlett@oracle.com>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2022-12-15 16:37:49 -08:00
Liam Howlett
d98c86b9f7 maple_tree: fix mas_find_rev() comment
mas_find_rev() uses mas_prev_entry(), not mas_next_entry(), correct comment.

Link: https://lkml.kernel.org/r/20221025173756.2719616-1-Liam.Howlett@oracle.com
Signed-off-by: Liam R. Howlett <Liam.Howlett@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2022-12-15 16:37:49 -08:00
David Hildenbrand
61b963b52f mm/gup_test: free memory allocated via kvcalloc() using kvfree()
We have to free via kvfree(), not via kfree().

Link: https://lkml.kernel.org/r/20221212182018.264900-1-david@redhat.com
Fixes: c77369b437 ("mm/gup_test: start/stop/read functionality for PIN LONGTERM test")
Signed-off-by: David Hildenbrand <david@redhat.com>
Reported-by: kernel test robot <lkp@intel.com>
Reported-by: Julia Lawall <julia.lawall@lip6.fr>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2022-12-15 16:37:48 -08:00
Linus Torvalds
851f657a86 13 cifs/smb3 client fixes
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Merge tag '6.2-rc-smb3-client-fixes-part1' of git://git.samba.org/sfrench/cifs-2.6

Pull cifs client updates from Steve French:

 - SMB3.1.1 POSIX Extensions fixes

 - remove use of generic_writepages() and ->cifs_writepage(), in favor
   of ->cifs_writepages() and ->migrate_folio()

 - memory management fixes

 - mount parm parsing fixes

 - minor cleanup fixes

* tag '6.2-rc-smb3-client-fixes-part1' of git://git.samba.org/sfrench/cifs-2.6:
  cifs: Remove duplicated include in cifsglob.h
  cifs: fix oops during encryption
  cifs: print warning when conflicting soft vs. hard mount options specified
  cifs: fix missing display of three mount options
  cifs: fix various whitespace errors in headers
  cifs: minor cleanup of some headers
  cifs: skip alloc when request has no pages
  cifs: remove ->writepage
  cifs: stop using generic_writepages
  cifs: wire up >migrate_folio
  cifs: Parse owner/group for stat in smb311 posix extensions
  cifs: Add "extbuf" and "extbuflen" args to smb2_compound_op()
  Fix path in cifs/usage.rst
2022-12-15 14:53:14 -08:00
Linus Torvalds
ec9187ecea Core got a new helper 'i2c_client_get_device_id', designware got some
bigger updates, the rest is driver updates all over the place
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Merge tag 'i2c-for-6.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux

Pull i2c updates from Wolfram Sang:
 "Core got a new helper 'i2c_client_get_device_id()', designware got
  some bigger updates, the rest is driver updates all over the place"

* tag 'i2c-for-6.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux: (41 commits)
  i2c: ismt: Fix an out-of-bounds bug in ismt_access()
  i2c: mux: reg: check return value after calling platform_get_resource()
  i2c: xiic: Make sure to disable clock on .remove()
  i2c: hisi: Add support to get clock frequency from clock
  i2c: pxa-pci: fix missing pci_disable_device() on error in ce4100_i2c_probe
  i2c: slave-eeprom: Convert to i2c's .probe_new()
  i2c: mux: pca954x: Convert to i2c's .probe_new()
  drivers/i2c: use simple i2c probe
  i2c: mux: pca9541: switch to using .probe_new
  i2c: gpio: Fix potential unused warning for 'i2c_gpio_dt_ids'
  i2c: qcom-geni: add support for I2C Master Hub variant
  i2c: qcom-geni: add desc struct to prepare support for I2C Master Hub variant
  soc: qcom: geni-se: add support for I2C Master Hub wrapper variant
  soc: qcom: geni-se: add desc struct to specify clocks from device match data
  dt-bindings: i2c: qcom-geni: document I2C Master Hub serial I2C engine
  dt-bindings: qcom: geni-se: document I2C Master Hub wrapper variant
  dt-bindings: i2c: renesas,riic: Document RZ/Five SoC
  i2c: tegra: Set ACPI node as primary fwnode
  i2c: smbus: add DDR support for SPD
  i2c: /pasemi: PASemi I2C controller IRQ enablement
  ...
2022-12-15 14:47:10 -08:00
Minghao Chi
e88f319a25 rtc: ds1742: use devm_platform_get_and_ioremap_resource()
Convert platform_get_resource(), devm_ioremap_resource() to a single
call to devm_platform_get_and_ioremap_resource(), as this is exactly
what this function does.

Signed-off-by: Minghao Chi <chi.minghao@zte.com.cn>
Signed-off-by: ye xingchen <ye.xingchen@zte.com.cn>
Link: https://lore.kernel.org/r/202211220947194856561@zte.com.cn
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2022-12-15 23:34:31 +01:00