1
0
mirror of https://github.com/torvalds/linux.git synced 2024-12-18 09:02:17 +00:00
Commit Graph

1482 Commits

Author SHA1 Message Date
Anshuman Khandual
fb42f8b729 perf branch: Add PERF_BR_NEW_ARCH_[N] map for BRBE on arm64 platform
This updates the perf tool with arch specific branch type classification
used for BRBE on arm64 platform as added in the kernel earlier.

Signed-off-by: Anshuman Khandual <anshuman.khandual@arm.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: James Clark <james.clark@arm.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Robin Murphy <robin.murphy@arm.com>
Cc: Suzuki Poulouse <suzuki.poulose@arm.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Will Deacon <will@kernel.org>
Cc: linux-arm-kernel@lists.infradead.org
Link: https://lore.kernel.org/r/20220824044822.70230-9-anshuman.khandual@arm.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-10-04 08:55:20 -03:00
Anshuman Khandual
bcb96ce6d2 perf branch: Add branch privilege information request flag
This updates the perf tools with branch privilege information request flag
i.e PERF_SAMPLE_BRANCH_PRIV_SAVE that has been added earlier in the kernel.
This also updates 'perf record' documentation, branch_modes[], and generic
branch privilege level enumeration as added earlier in the kernel.

Signed-off-by: Anshuman Khandual <anshuman.khandual@arm.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: James Clark <james.clark@arm.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Robin Murphy <robin.murphy@arm.com>
Cc: Suzuki Poulouse <suzuki.poulose@arm.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Will Deacon <will@kernel.org>
Cc: linux-arm-kernel@lists.infradead.org
Link: https://lore.kernel.org/r/20220824044822.70230-8-anshuman.khandual@arm.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-10-04 08:55:20 -03:00
Anshuman Khandual
0ddea8e2a0 perf branch: Extend branch type classification
This updates the perf tool with generic branch type classification with new
ABI extender place holder i.e PERF_BR_EXTEND_ABI, the new 4 bit branch type
field i.e perf_branch_entry.new_type, new generic page fault related branch
types and some arch specific branch types as added earlier in the kernel.

Committer note:

Add an extra entry to the branch_type_name array to cope with
PERF_BR_EXTEND_ABI, to address build warnings on some compiler/systems,
like:

  75     8.89 ubuntu:20.04-x-powerpc64el    : FAIL gcc version 10.3.0 (Ubuntu 10.3.0-1ubuntu1~20.04)
        inlined from 'branch_type_stat_display' at util/branch.c:152:4:
    /usr/powerpc64le-linux-gnu/include/bits/stdio2.h💯10: error: '%8s' directive argument is null [-Werror=format-overflow=]
      100 |   return __fprintf_chk (__stream, __USE_FORTIFY_LEVEL - 1, __fmt,
          |          ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
      101 |    __va_arg_pack ());
          |    ~~~~~~~~~~~~~~~~~

Signed-off-by: Anshuman Khandual <anshuman.khandual@arm.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: James Clark <james.clark@arm.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Robin Murphy <robin.murphy@arm.com>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>
Cc: Suzuki Poulouse <suzuki.poulose@arm.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Will Deacon <will@kernel.org>
Cc: linux-arm-kernel@lists.infradead.org
Link: https://lore.kernel.org/r/20220824044822.70230-7-anshuman.khandual@arm.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-10-04 08:55:20 -03:00
Anshuman Khandual
1c96b6e45f perf branch: Add system error and not in transaction branch types
This updates the perf tool with generic branch type classification with
two new branch types i.e system error (PERF_BR_SERROR) and not in
transaction (PERF_BR_NO_TX) which got updated earlier in the kernel.

This also updates corresponding branch type strings in
branch_type_name().

Committer notes:

At perf tools merge time this is only on PeterZ's tree, at:

  git://git.kernel.org/pub/scm/linux/kernel/git/peterz/queue.git perf/core

So for testing one has to build a kernel with that branch, then test
the tooling side from:

  git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux.git perf/core

Reviewed-by: James Clark <james.clark@arm.com>
Signed-off-by: Anshuman Khandual <anshuman.khandual@arm.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Robin Murphy <robin.murphy@arm.com>
Cc: Suzuki Poulouse <suzuki.poulose@arm.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Will Deacon <will@kernel.org>
Cc: linux-arm-kernel@lists.infradead.org
Link: https://lore.kernel.org/r/20220824044822.70230-6-anshuman.khandual@arm.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-10-04 08:55:20 -03:00
Linus Torvalds
8aebac8293 Rust introduction for v6.1-rc1
The initial support of Rust-for-Linux comes in roughly 4 areas:
 
 - Kernel internals (kallsyms expansion for Rust symbols, %pA format)
 
 - Kbuild infrastructure (Rust build rules and support scripts)
 
 - Rust crates and bindings for initial minimum viable build
 
 - Rust kernel documentation and samples
 
 Rust support has been in linux-next for a year and a half now, and the
 short log doesn't do justice to the number of people who have contributed
 both to the Linux kernel side but also to the upstream Rust side to
 support the kernel's needs. Thanks to these 173 people, and many more,
 who have been involved in all kinds of ways:
 
 Miguel Ojeda, Wedson Almeida Filho, Alex Gaynor, Boqun Feng, Gary Guo,
 Björn Roy Baron, Andreas Hindborg, Adam Bratschi-Kaye, Benno Lossin,
 Maciej Falkowski, Finn Behrens, Sven Van Asbroeck, Asahi Lina, FUJITA
 Tomonori, John Baublitz, Wei Liu, Geoffrey Thomas, Philip Herron,
 Arthur Cohen, David Faust, Antoni Boucher, Philip Li, Yujie Liu,
 Jonathan Corbet, Greg Kroah-Hartman, Paul E. McKenney, Josh Triplett,
 Kent Overstreet, David Gow, Alice Ryhl, Robin Randhawa, Kees Cook,
 Nick Desaulniers, Matthew Wilcox, Linus Walleij, Joe Perches, Michael
 Ellerman, Petr Mladek, Masahiro Yamada, Arnaldo Carvalho de Melo,
 Andrii Nakryiko, Konstantin Shelekhin, Rasmus Villemoes, Konstantin
 Ryabitsev, Stephen Rothwell, Andy Shevchenko, Sergey Senozhatsky, John
 Paul Adrian Glaubitz, David Laight, Nathan Chancellor, Jonathan
 Cameron, Daniel Latypov, Shuah Khan, Brendan Higgins, Julia Lawall,
 Laurent Pinchart, Geert Uytterhoeven, Akira Yokosawa, Pavel Machek,
 David S. Miller, John Hawley, James Bottomley, Arnd Bergmann,
 Christian Brauner, Dan Robertson, Nicholas Piggin, Zhouyi Zhou, Elena
 Zannoni, Jose E. Marchesi, Leon Romanovsky, Will Deacon, Richard
 Weinberger, Randy Dunlap, Paolo Bonzini, Roland Dreier, Mark Brown,
 Sasha Levin, Ted Ts'o, Steven Rostedt, Jarkko Sakkinen, Michal
 Kubecek, Marco Elver, Al Viro, Keith Busch, Johannes Berg, Jan Kara,
 David Sterba, Connor Kuehl, Andy Lutomirski, Andrew Lunn, Alexandre
 Belloni, Peter Zijlstra, Russell King, Eric W. Biederman, Willy
 Tarreau, Christoph Hellwig, Emilio Cobos Álvarez, Christian Poveda,
 Mark Rousskov, John Ericson, TennyZhuang, Xuanwo, Daniel Paoliello,
 Manish Goregaokar, comex, Josh Stone, Stephan Sokolow, Philipp Krones,
 Guillaume Gomez, Joshua Nelson, Mats Larsen, Marc Poulhiès, Samantha
 Miller, Esteban Blanc, Martin Schmidt, Martin Rodriguez Reboredo,
 Daniel Xu, Viresh Kumar, Bartosz Golaszewski, Vegard Nossum, Milan
 Landaverde, Dariusz Sosnowski, Yuki Okushi, Matthew Bakhtiari, Wu
 XiangCheng, Tiago Lam, Boris-Chengbiao Zhou, Sumera Priyadarsini,
 Viktor Garske, Niklas Mohrin, Nándor István Krácser, Morgan Bartlett,
 Miguel Cano, Léo Lanteri Thauvin, Julian Merkle, Andreas Reindl,
 Jiapeng Chong, Fox Chen, Douglas Su, Antonio Terceiro, SeongJae Park,
 Sergio González Collado, Ngo Iok Ui (Wu Yu Wei), Joshua Abraham,
 Milan, Daniel Kolsoi, ahomescu, Manas, Luis Gerhorst, Li Hongyu,
 Philipp Gesang, Russell Currey, Jalil David Salamé Messina, Jon Olson,
 Raghvender, Angelos, Kaviraj Kanagaraj, Paul Römer, Sladyn Nunes,
 Mauro Baladés, Hsiang-Cheng Yang, Abhik Jain, Hongyu Li, Sean Nash,
 Yuheng Su, Peng Hao, Anhad Singh, Roel Kluin, Sara Saa, Geert
 Stappers, Garrett LeSage, IFo Hancroft, and Linus Torvalds.
 -----BEGIN PGP SIGNATURE-----
 
 iQJKBAABCgA0FiEEpcP2jyKd1g9yPm4TiXL039xtwCYFAmM4WcIWHGtlZXNjb29r
 QGNocm9taXVtLm9yZwAKCRCJcvTf3G3AJlGrD/93HbmxjNi/hwdWF5UdWV1/W0kJ
 bSTh9JsNtN9atQGEUwxePBjrtxHE75lxSL0RJ+sWvaJ7vR3iv2qys+cEgU0ePrgX
 INZ3bvHAGgvPG1b0R6VxmakksHq1BdCDbCT3Ft5lSNxB0uQBi95KgjtR0lCH/NUl
 eoZnGJ0ZbKs5KpbzFqOjM2gmJ51geZppnfNFmbKOb3lSUpPQqhZLPDCzweE57GNo
 e2vcMoY4daVaSUxmo01TSEphrM5IjDxp5rs09+aeovfmpbeoiz33siyGiAxyM7CI
 +Ybxl+bBnyqXLadjbs9VvvtYzASFZgmrQdwIQbY8j/sqsw34jmZarOwa5iUVmo+Q
 2w1CDDNLMG3XpI/PdnUklFRIJg1uYCM+OXgZY2MFFqzbjoik/zFv2qFWTp1F5+XV
 DdLxoN9quBPDSVDFQjAZPsyCD/pSRfiJYh9s7BdlhUPL6rk9uLIgZyZuPqy3kWXn
 2Z02lWJpiHUtTaICdUDyNPFzTggDHEfY2DvmuedXpsyhlMkCdtFS5zoo/evl8pb6
 xUV7qdfpjyLyTLmLWjYEVRO6DJJuFQWMK5Qpqn6O0y3wch3XV+At5QDk2TE2WMvB
 cYwd9nCqcMs7J0HrdoDmtLwew1jrLd1xefqDgD0zd6B/+Dk9W4gFD69Stmtarg7d
 KGRvH0wnL0keMxy31w==
 =zz09
 -----END PGP SIGNATURE-----

Merge tag 'rust-v6.1-rc1' of https://github.com/Rust-for-Linux/linux

Pull Rust introductory support from Kees Cook:
 "The tree has a recent base, but has fundamentally been in linux-next
  for a year and a half[1]. It's been updated based on feedback from the
  Kernel Maintainer's Summit, and to gain recent Reviewed-by: tags.

  Miguel is the primary maintainer, with me helping where needed/wanted.
  Our plan is for the tree to switch to the standard non-rebasing
  practice once this initial infrastructure series lands.

  The contents are the absolute minimum to get Rust code building in the
  kernel, with many more interfaces[2] (and drivers - NVMe[3], 9p[4], M1
  GPU[5]) on the way.

  The initial support of Rust-for-Linux comes in roughly 4 areas:

   - Kernel internals (kallsyms expansion for Rust symbols, %pA format)

   - Kbuild infrastructure (Rust build rules and support scripts)

   - Rust crates and bindings for initial minimum viable build

   - Rust kernel documentation and samples

  Rust support has been in linux-next for a year and a half now, and the
  short log doesn't do justice to the number of people who have
  contributed both to the Linux kernel side but also to the upstream
  Rust side to support the kernel's needs. Thanks to these 173 people,
  and many more, who have been involved in all kinds of ways:

  Miguel Ojeda, Wedson Almeida Filho, Alex Gaynor, Boqun Feng, Gary Guo,
  Björn Roy Baron, Andreas Hindborg, Adam Bratschi-Kaye, Benno Lossin,
  Maciej Falkowski, Finn Behrens, Sven Van Asbroeck, Asahi Lina, FUJITA
  Tomonori, John Baublitz, Wei Liu, Geoffrey Thomas, Philip Herron,
  Arthur Cohen, David Faust, Antoni Boucher, Philip Li, Yujie Liu,
  Jonathan Corbet, Greg Kroah-Hartman, Paul E. McKenney, Josh Triplett,
  Kent Overstreet, David Gow, Alice Ryhl, Robin Randhawa, Kees Cook,
  Nick Desaulniers, Matthew Wilcox, Linus Walleij, Joe Perches, Michael
  Ellerman, Petr Mladek, Masahiro Yamada, Arnaldo Carvalho de Melo,
  Andrii Nakryiko, Konstantin Shelekhin, Rasmus Villemoes, Konstantin
  Ryabitsev, Stephen Rothwell, Andy Shevchenko, Sergey Senozhatsky, John
  Paul Adrian Glaubitz, David Laight, Nathan Chancellor, Jonathan
  Cameron, Daniel Latypov, Shuah Khan, Brendan Higgins, Julia Lawall,
  Laurent Pinchart, Geert Uytterhoeven, Akira Yokosawa, Pavel Machek,
  David S. Miller, John Hawley, James Bottomley, Arnd Bergmann,
  Christian Brauner, Dan Robertson, Nicholas Piggin, Zhouyi Zhou, Elena
  Zannoni, Jose E. Marchesi, Leon Romanovsky, Will Deacon, Richard
  Weinberger, Randy Dunlap, Paolo Bonzini, Roland Dreier, Mark Brown,
  Sasha Levin, Ted Ts'o, Steven Rostedt, Jarkko Sakkinen, Michal
  Kubecek, Marco Elver, Al Viro, Keith Busch, Johannes Berg, Jan Kara,
  David Sterba, Connor Kuehl, Andy Lutomirski, Andrew Lunn, Alexandre
  Belloni, Peter Zijlstra, Russell King, Eric W. Biederman, Willy
  Tarreau, Christoph Hellwig, Emilio Cobos Álvarez, Christian Poveda,
  Mark Rousskov, John Ericson, TennyZhuang, Xuanwo, Daniel Paoliello,
  Manish Goregaokar, comex, Josh Stone, Stephan Sokolow, Philipp Krones,
  Guillaume Gomez, Joshua Nelson, Mats Larsen, Marc Poulhiès, Samantha
  Miller, Esteban Blanc, Martin Schmidt, Martin Rodriguez Reboredo,
  Daniel Xu, Viresh Kumar, Bartosz Golaszewski, Vegard Nossum, Milan
  Landaverde, Dariusz Sosnowski, Yuki Okushi, Matthew Bakhtiari, Wu
  XiangCheng, Tiago Lam, Boris-Chengbiao Zhou, Sumera Priyadarsini,
  Viktor Garske, Niklas Mohrin, Nándor István Krácser, Morgan Bartlett,
  Miguel Cano, Léo Lanteri Thauvin, Julian Merkle, Andreas Reindl,
  Jiapeng Chong, Fox Chen, Douglas Su, Antonio Terceiro, SeongJae Park,
  Sergio González Collado, Ngo Iok Ui (Wu Yu Wei), Joshua Abraham,
  Milan, Daniel Kolsoi, ahomescu, Manas, Luis Gerhorst, Li Hongyu,
  Philipp Gesang, Russell Currey, Jalil David Salamé Messina, Jon Olson,
  Raghvender, Angelos, Kaviraj Kanagaraj, Paul Römer, Sladyn Nunes,
  Mauro Baladés, Hsiang-Cheng Yang, Abhik Jain, Hongyu Li, Sean Nash,
  Yuheng Su, Peng Hao, Anhad Singh, Roel Kluin, Sara Saa, Geert
  Stappers, Garrett LeSage, IFo Hancroft, and Linus Torvalds"

Link: https://lwn.net/Articles/849849/ [1]
Link: https://github.com/Rust-for-Linux/linux/commits/rust [2]
Link: d88c3744d6 [3]
Link: 9367032607 [4]
Link: https://github.com/AsahiLinux/linux/commits/gpu/rust-wip [5]

* tag 'rust-v6.1-rc1' of https://github.com/Rust-for-Linux/linux: (27 commits)
  MAINTAINERS: Rust
  samples: add first Rust examples
  x86: enable initial Rust support
  docs: add Rust documentation
  Kbuild: add Rust support
  rust: add `.rustfmt.toml`
  scripts: add `is_rust_module.sh`
  scripts: add `rust_is_available.sh`
  scripts: add `generate_rust_target.rs`
  scripts: add `generate_rust_analyzer.py`
  scripts: decode_stacktrace: demangle Rust symbols
  scripts: checkpatch: enable language-independent checks for Rust
  scripts: checkpatch: diagnose uses of `%pA` in the C side as errors
  vsprintf: add new `%pA` format specifier
  rust: export generated symbols
  rust: add `kernel` crate
  rust: add `bindings` crate
  rust: add `macros` crate
  rust: add `compiler_builtins` crate
  rust: adapt `alloc` crate to the kernel
  ...
2022-10-03 16:39:37 -07:00
Linus Torvalds
dda0ba40da nolibc pull request for v6.1
This pull request provides nolibc updates, most notably greatly improved
 testing.  These tests are located in tools/testing/selftests/nolibc.  The
 output of "make help" is as follows:
 
 	Supported targets under selftests/nolibc:
 	  all          call the "run" target below
 	  help         this help
 	  sysroot      create the nolibc sysroot here (uses $ARCH)
 	  nolibc-test  build the executable (uses $CC and $CROSS_COMPILE)
 	  initramfs    prepare the initramfs with nolibc-test
 	  defconfig    create a fresh new default config (uses $ARCH)
 	  kernel       (re)build the kernel with the initramfs (uses $ARCH)
 	  run          runs the kernel in QEMU after building it (uses $ARCH, $TEST)
 	  rerun        runs a previously prebuilt kernel in QEMU (uses $ARCH, $TEST)
 	  clean        clean the sysroot, initramfs, build and output files
 
 	The output file is "run.out". Test ranges may be passed using $TEST.
 
 	Currently using the following variables:
 	  ARCH          = x86
 	  CROSS_COMPILE =
 	  CC            = gcc
 	  OUTPUT        = /home/git/linux-rcu/tools/testing/selftests/nolibc/
 	  TEST          =
 	  QEMU_ARCH     = x86_64 [determined from $ARCH]
 	  IMAGE_NAME    = bzImage [determined from $ARCH]
 
 The output of a successful x86 "make run" is currently as follows,
 with kernel build output omitted:
 
 	$ make run
 	71 test(s) passed.
 	$
 -----BEGIN PGP SIGNATURE-----
 
 iQJHBAABCgAxFiEEbK7UrM+RBIrCoViJnr8S83LZ+4wFAmM5AeATHHBhdWxtY2tA
 a2VybmVsLm9yZwAKCRCevxLzctn7jJCLD/wIps8OlIvNMlvT0Bwmi1gG6kTdJrXb
 Cj495z9F1P8c1x2nZBVuwPM05KM4SUvMLBzkND8le/AqrDP2Vc9WurEjnx6aYbjw
 aNrWeeVOYF2ykROpEyolF92bV0tu2aZEYmZ12Rxb3ybKYW8wf5t2M6JbU9VvLATB
 TNPov6cBUjJLqF5AVf4pJ3FNjGJH392NyTzGuKFYN4kK8XGPSxKFfpb8jJX/Jnr/
 OQPZZurHclgIJzWYwjWpWBY5NBEMSUI8K2KqQIFzeVdNGpWmAyAyciCDG3zD+Rp1
 GtcHrPEgvBQnPd5o89eZonMPHkIC5kOVU3Ebwzzx30GWQO8cseCZCb9foJCu918q
 wbJYPvopDw1Kd7NtltTzWj/xWkINgBcqdki5bEtcOW8i71RX8tgzUVx/tz771Vok
 /j21se9Svwi8ZnAY+dTxMNdy0Jd7eI0dJO6fMzagrQamDKZzNaO50WjiCW53/Eln
 JSttwSneWJ190PJ5ty6lNQ6OLGuILSXWhbYzRplgHiEcSwjtpxccgMRkiNQlQiow
 hXRNKQU/A7q3b5HPpf/kdQFGEk/aqFNDTpTuz1JCsCY2f9WQ6qz5stQuUKfFxyVh
 YD82JBI1DHtucs5dD/4ZbparHrJGG/NsHoe61wZYpXVrcJWfB0bMiie3zQ1cGoWN
 t6lw39lNotQbsw==
 =wqBE
 -----END PGP SIGNATURE-----

Merge tag 'nolibc.2022.09.30a' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu

Pull nolibc updates from Paul McKenney:
 "Most notably greatly improved testing. These tests are located in
  tools/testing/selftests/nolibc. The output of "make help" is as
  follows:

    Supported targets under selftests/nolibc:
      all          call the "run" target below
      help         this help
      sysroot      create the nolibc sysroot here (uses $ARCH)
      nolibc-test  build the executable (uses $CC and $CROSS_COMPILE)
      initramfs    prepare the initramfs with nolibc-test
      defconfig    create a fresh new default config (uses $ARCH)
      kernel       (re)build the kernel with the initramfs (uses $ARCH)
      run          runs the kernel in QEMU after building it (uses $ARCH, $TEST)
      rerun        runs a previously prebuilt kernel in QEMU (uses $ARCH, $TEST)
      clean        clean the sysroot, initramfs, build and output files

    The output file is "run.out". Test ranges may be passed using $TEST.

    Currently using the following variables:
      ARCH          = x86
      CROSS_COMPILE =
      CC            = gcc
      OUTPUT        = /home/git/linux-rcu/tools/testing/selftests/nolibc/
      TEST          =
      QEMU_ARCH     = x86_64 [determined from $ARCH]
      IMAGE_NAME    = bzImage [determined from $ARCH]

  The output of a successful x86 "make run" is currently as follows,
  with kernel build output omitted:

    $ make run
    71 test(s) passed."

* tag 'nolibc.2022.09.30a' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu:
  selftests/nolibc: Avoid generated files being committed
  selftests/nolibc: add a "help" target
  selftests/nolibc: "sysroot" target installs a local copy of the sysroot
  selftests/nolibc: add a "run" target to start the kernel in QEMU
  selftests/nolibc: add a "defconfig" target
  selftests/nolibc: add a "kernel" target to build the kernel with the initramfs
  selftests/nolibc: support glibc as well
  selftests/nolibc: condition some tests on /proc existence
  selftests/nolibc: recreate and populate /dev and /proc if missing
  selftests/nolibc: on x86, support exiting with isa-debug-exit
  selftests/nolibc: exit with poweroff on success when getpid() == 1
  selftests/nolibc: add a few tests for some libc functions
  selftests/nolibc: implement a few tests for various syscalls
  selftests/nolibc: support a test definition format
  selftests/nolibc: add basic infrastructure to ease creation of nolibc tests
  tools/nolibc: make sys_mmap() automatically use the right __NR_mmap definition
  tools/nolibc: fix build warning in sys_mmap() when my_syscall6 is not defined
  tools/nolibc: make argc 32-bit in riscv startup code
2022-10-03 10:01:19 -07:00
Miguel Ojeda
b8a94bfb33 kallsyms: increase maximum kernel symbol length to 512
Rust symbols can become quite long due to namespacing introduced
by modules, types, traits, generics, etc. For instance,
the following code:

    pub mod my_module {
        pub struct MyType;
        pub struct MyGenericType<T>(T);

        pub trait MyTrait {
            fn my_method() -> u32;
        }

        impl MyTrait for MyGenericType<MyType> {
            fn my_method() -> u32 {
                42
            }
        }
    }

generates a symbol of length 96 when using the upcoming v0 mangling scheme:

    _RNvXNtCshGpAVYOtgW1_7example9my_moduleINtB2_13MyGenericTypeNtB2_6MyTypeENtB2_7MyTrait9my_method

At the moment, Rust symbols may reach up to 300 in length.
Setting 512 as the maximum seems like a reasonable choice to
keep some headroom.

Reviewed-by: Kees Cook <keescook@chromium.org>
Reviewed-by: Petr Mladek <pmladek@suse.com>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Co-developed-by: Alex Gaynor <alex.gaynor@gmail.com>
Signed-off-by: Alex Gaynor <alex.gaynor@gmail.com>
Co-developed-by: Wedson Almeida Filho <wedsonaf@google.com>
Signed-off-by: Wedson Almeida Filho <wedsonaf@google.com>
Co-developed-by: Gary Guo <gary@garyguo.net>
Signed-off-by: Gary Guo <gary@garyguo.net>
Co-developed-by: Boqun Feng <boqun.feng@gmail.com>
Signed-off-by: Boqun Feng <boqun.feng@gmail.com>
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
2022-09-28 08:56:25 +02:00
Linus Torvalds
3800a713b6 26 hotfixes. 8 are for issues which were introduced during this -rc
cycle, 18 are for earlier issues, and are cc:stable.
 -----BEGIN PGP SIGNATURE-----
 
 iHUEABYKAB0WIQTTMBEPP41GrTpTJgfdBJ7gKXxAjgUCYzH+NgAKCRDdBJ7gKXxA
 ju4AAQDrFWErVp+ra5P66SSbiFmm8NAW1awt4nHwAPcihNf3yQD/eQcB3w2q0Dm1
 9HjsyEVkTYIeaJSAbCraDnMwUdWTIgY=
 =p5+0
 -----END PGP SIGNATURE-----

Merge tag 'mm-hotfixes-stable-2022-09-26' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

Pull last (?) hotfixes from Andrew Morton:
 "26 hotfixes.

  8 are for issues which were introduced during this -rc cycle, 18 are
  for earlier issues, and are cc:stable"

* tag 'mm-hotfixes-stable-2022-09-26' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (26 commits)
  x86/uaccess: avoid check_object_size() in copy_from_user_nmi()
  mm/page_isolation: fix isolate_single_pageblock() isolation behavior
  mm,hwpoison: check mm when killing accessing process
  mm/hugetlb: correct demote page offset logic
  mm: prevent page_frag_alloc() from corrupting the memory
  mm: bring back update_mmu_cache() to finish_fault()
  frontswap: don't call ->init if no ops are registered
  mm/huge_memory: use pfn_to_online_page() in split_huge_pages_all()
  mm: fix madivse_pageout mishandling on non-LRU page
  powerpc/64s/radix: don't need to broadcast IPI for radix pmd collapse flush
  mm: gup: fix the fast GUP race against THP collapse
  mm: fix dereferencing possible ERR_PTR
  vmscan: check folio_test_private(), not folio_get_private()
  mm: fix VM_BUG_ON in __delete_from_swap_cache()
  tools: fix compilation after gfp_types.h split
  mm/damon/dbgfs: fix memory leak when using debugfs_lookup()
  mm/migrate_device.c: copy pte dirty bit to page
  mm/migrate_device.c: add missing flush_cache_page()
  mm/migrate_device.c: flush TLB while holding PTL
  x86/mm: disable instrumentations of mm/pgprot.c
  ...
2022-09-26 13:23:15 -07:00
Ben Hutchings
95363747a6 tools/include/uapi: Fix <asm/errno.h> for parisc and xtensa
tools/include/uapi/asm/errno.h currently attempts to include
non-existent arch-specific errno.h header for xtensa.
Remove this case so that <asm-generic/errno.h> is used instead,
and add the missing arch-specific header for parisc.

References: https://buildd.debian.org/status/fetch.php?pkg=linux&arch=ia64&ver=5.8.3-1%7Eexp1&stamp=1598340829&raw=1
Signed-off-by: Ben Hutchings <benh@debian.org>
Signed-off-by: Salvatore Bonaccorso <carnil@debian.org>
Cc: <stable@vger.kernel.org> # 5.10+
Signed-off-by: Helge Deller <deller@gmx.de>
2022-09-13 14:04:35 +02:00
Matthew Wilcox (Oracle)
283c05f66d tools: fix compilation after gfp_types.h split
When gfp_types.h was split from gfp.h, it broke the radix test suite.  Fix
the test suite by using gfp_types.h in the tools gfp.h header.

Link: https://lkml.kernel.org/r/20220902191923.1735933-1-willy@infradead.org
Fixes: cb5a065b4e (headers/deps: mm: Split <linux/gfp_types.h> out of <linux/gfp.h>)
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reported-by: Liam R. Howlett <Liam.Howlett@oracle.com>
Reviewed-by: Yury Norov <yury.norov@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2022-09-11 16:22:31 -07:00
Willy Tarreau
364702f755 tools/nolibc: make sys_mmap() automatically use the right __NR_mmap definition
__NR_mmap2 was used for i386 but it's also needed for other archs such
as RISCV32 or ARM. Let's decide to use it based on the __NR_mmap2
definition as it's not defined on other archs.

Signed-off-by: Willy Tarreau <w@1wt.eu>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
2022-08-31 05:17:43 -07:00
Willy Tarreau
8b53e83b08 tools/nolibc: fix build warning in sys_mmap() when my_syscall6 is not defined
We return -ENOSYS when there's no syscall6() operation, but we must cast
it to void* to avoid a warning.

Signed-off-by: Willy Tarreau <w@1wt.eu>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
2022-08-31 05:17:43 -07:00
Willy Tarreau
a30d551f34 tools/nolibc: make argc 32-bit in riscv startup code
The "ld a0, 0(sp)" instruction doesn't build on RISCV32 because that
would load a 64-bit value into a 32-bit register. But argc 32-bit,
not 64, so we ought to use "lw" here. Tested on both RISCV32 and
RISCV64.

Cc: Pranith Kumar <bobby.prani@gmail.com>
Signed-off-by: Willy Tarreau <w@1wt.eu>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
2022-08-31 05:17:43 -07:00
Yang Jihong
cfd2b5c110 perf tools: Fix compile error for x86
Commit a0a12c3ed0 ("asm goto: eradicate CC_HAS_ASM_GOTO") eradicates
CC_HAS_ASM_GOTO, and in the process also causes the perf tool on x86 to
use asm_volatile_goto when compiling __GEN_RMWcc.

However, asm_volatile_goto is not declared in the perf tool headers,
which causes a compilation error:

  In file included from tools/arch/x86/include/asm/atomic.h:7,
                   from tools/include/asm/atomic.h:6,
                   from tools/include/linux/atomic.h:5,
                   from tools/include/linux/refcount.h:41,
                   from tools/lib/perf/include/internal/cpumap.h:5,
                   from tools/perf/util/cpumap.h:7,
                   from tools/perf/util/env.h:7,
                   from tools/perf/util/header.h:12,
                   from pmu-events/pmu-events.c:9:
  tools/arch/x86/include/asm/atomic.h: In function ‘atomic_dec_and_test’:
  tools/arch/x86/include/asm/rmwcc.h:7:2: error: implicit declaration of function ‘asm_volatile_goto’ [-Werror=implicit-function-declaration]
    asm_volatile_goto (fullop "; j" cc " %l[cc_label]"  \
    ^~~~~~~~~~~~~~~~~

Define asm_volatile_goto in compiler_types.h if not declared, like the
main kernel header files do.

Fixes: a0a12c3ed0 ("asm goto: eradicate CC_HAS_ASM_GOTO")
Signed-off-by: Yang Jihong <yangjihong1@huawei.com>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Tested-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2022-08-22 09:44:19 -07:00
Namhyung Kim
65ba872a69 tools headers UAPI: Sync linux/perf_event.h with the kernel sources
To pick the trivial change in:

  119a784c81 ("perf/core: Add a new read format to get a number of lost samples")

Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Cc: Ian Rogers <irogers@google.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: https://lore.kernel.org/r/20220819003644.508916-2-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-08-19 15:56:10 -03:00
Arnaldo Carvalho de Melo
898d240346 tools include UAPI: Sync linux/vhost.h with the kernel sources
To get the changes in:

  f345a0143b ("vhost-vdpa: uAPI to suspend the device")

Silencing this perf build warning:

  Warning: Kernel ABI header at 'tools/include/uapi/linux/vhost.h' differs from latest version at 'include/uapi/linux/vhost.h'
  diff -u tools/include/uapi/linux/vhost.h include/uapi/linux/vhost.h

To pick up these changes and support them:

  $ tools/perf/trace/beauty/vhost_virtio_ioctl.sh > before
  $ cp include/uapi/linux/vhost.h tools/include/uapi/linux/vhost.h
  $ tools/perf/trace/beauty/vhost_virtio_ioctl.sh > after
  $ diff -u before after
  --- before	2022-08-18 09:46:12.355958316 -0300
  +++ after	2022-08-18 09:46:19.701182822 -0300
  @@ -29,6 +29,7 @@
   	[0x75] = "VDPA_SET_VRING_ENABLE",
   	[0x77] = "VDPA_SET_CONFIG_CALL",
   	[0x7C] = "VDPA_SET_GROUP_ASID",
  +	[0x7D] = "VDPA_SUSPEND",
   };
   = {
   	[0x00] = "GET_FEATURES",
  $

For instance, see how those 'cmd' ioctl arguments get translated, now
VDPA_SUSPEND will be as well:

  # perf trace -a -e ioctl --max-events=10
       0.000 ( 0.011 ms): pipewire/2261 ioctl(fd: 60, cmd: SNDRV_PCM_HWSYNC, arg: 0x1)                        = 0
      21.353 ( 0.014 ms): pipewire/2261 ioctl(fd: 60, cmd: SNDRV_PCM_HWSYNC, arg: 0x1)                        = 0
      25.766 ( 0.014 ms): gnome-shell/2196 ioctl(fd: 14, cmd: DRM_I915_IRQ_WAIT, arg: 0x7ffe4a22c740)            = 0
      25.845 ( 0.034 ms): gnome-shel:cs0/2212 ioctl(fd: 14, cmd: DRM_I915_IRQ_EMIT, arg: 0x7fd43915dc70)            = 0
      25.916 ( 0.011 ms): gnome-shell/2196 ioctl(fd: 9, cmd: DRM_MODE_ADDFB2, arg: 0x7ffe4a22c8a0)               = 0
      25.941 ( 0.025 ms): gnome-shell/2196 ioctl(fd: 9, cmd: DRM_MODE_ATOMIC, arg: 0x7ffe4a22c840)               = 0
      32.915 ( 0.009 ms): gnome-shell/2196 ioctl(fd: 9, cmd: DRM_MODE_RMFB, arg: 0x7ffe4a22cf9c)                 = 0
      42.522 ( 0.013 ms): gnome-shell/2196 ioctl(fd: 14, cmd: DRM_I915_IRQ_WAIT, arg: 0x7ffe4a22c740)            = 0
      42.579 ( 0.031 ms): gnome-shel:cs0/2212 ioctl(fd: 14, cmd: DRM_I915_IRQ_EMIT, arg: 0x7fd43915dc70)            = 0
      42.644 ( 0.010 ms): gnome-shell/2196 ioctl(fd: 9, cmd: DRM_MODE_ADDFB2, arg: 0x7ffe4a22c8a0)               = 0
  #

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Eugenio Pérez <eperezma@redhat.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Michael S. Tsirkin <mst@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: https://lore.kernel.org/lkml/Yv6Kb4OESuNJuH6X@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-08-19 15:30:34 -03:00
Arnaldo Carvalho de Melo
bf465ca809 tools headers UAPI: Sync linux/kvm.h with the kernel sources
To pick the changes in:

  8a061562e2 ("RISC-V: KVM: Add extensible CSR emulation framework")
  f5ecfee944 ("KVM: s390: resetting the Topology-Change-Report")
  450a563924 ("KVM: stats: Fix value for KVM_STATS_UNIT_MAX for boolean stats")
  1b870fa557 ("kvm: stats: tell userspace which values are boolean")
  db1c875e05 ("KVM: s390: add KVM_S390_ZPCI_OP to manage guest zPCI devices")
  94dfc73e7c ("treewide: uapi: Replace zero-length arrays with flexible-array members")
  084cc29f8b ("KVM: x86/MMU: Allow NX huge pages to be disabled on a per-vm basis")
  2f4073e08f ("KVM: VMX: Enable Notify VM exit")
  ed2351174e ("KVM: x86: Extend KVM_{G,S}ET_VCPU_EVENTS to support pending triple fault")
  e9bf3acb23 ("KVM: s390: Add KVM_CAP_S390_PROTECTED_DUMP")
  8aba09588d ("KVM: s390: Add CPU dump functionality")
  0460eb35b4 ("KVM: s390: Add configuration dump functionality")
  fe9a93e07b ("KVM: s390: pv: Add query dump information")
  35d02493db ("KVM: s390: pv: Add query interface")
  c24a950ec7 ("KVM, SEV: Add KVM_EXIT_SHUTDOWN metadata for SEV-ES")
  ffbb61d09f ("KVM: x86: Accept KVM_[GS]ET_TSC_KHZ as a VM ioctl.")
  661a20fab7 ("KVM: x86/xen: Advertise and document KVM_XEN_HVM_CONFIG_EVTCHN_SEND")
  fde0451be8 ("KVM: x86/xen: Support per-vCPU event channel upcall via local APIC")
  28d1629f75 ("KVM: x86/xen: Kernel acceleration for XENVER_version")
  5363952605 ("KVM: x86/xen: handle PV timers oneshot mode")
  942c2490c2 ("KVM: x86/xen: Add KVM_XEN_VCPU_ATTR_TYPE_VCPU_ID")
  2fd6df2f2b ("KVM: x86/xen: intercept EVTCHNOP_send from guests")
  35025735a7 ("KVM: x86/xen: Support direct injection of event channel events")

That just rebuilds perf, as these patches add just an ioctl that is S390
specific and may clash with other arches, so are so far being excluded
in the harvester script:

  $ tools/perf/trace/beauty/kvm_ioctl.sh > before
  $ cp include/uapi/linux/kvm.h tools/include/uapi/linux/kvm.h
  $ tools/perf/trace/beauty/kvm_ioctl.sh > after
  $ diff -u before after
  $ grep 390 tools/perf/trace/beauty/kvm_ioctl.sh
  	egrep -v " ((ARM|PPC|S390)_|[GS]ET_(DEBUGREGS|PIT2|XSAVE|TSC_KHZ)|CREATE_SPAPR_TCE_64)" | \
  $

This is also by now used by tools/testing/selftests/kvm/, a simple test
build succeeded.

This silences this perf build warning:

  Warning: Kernel ABI header at 'tools/include/uapi/linux/kvm.h' differs from latest version at 'include/uapi/linux/kvm.h'
  diff -u tools/include/uapi/linux/kvm.h include/uapi/linux/kvm.h

Cc: Anup Patel <anup@brainfault.org>
Cc: Ben Gardon <bgardon@google.com>
Cc: Chenyi Qiang <chenyi.qiang@intel.com>
Cc: Christian Borntraeger <borntraeger@linux.ibm.com>
Cc: David Woodhouse <dwmw@amazon.co.uk>
Cc: Gustavo A. R. Silva <gustavoars@kernel.org>
Cc: Janosch Frank <frankja@linux.ibm.com>
Cc: João Martins <joao.m.martins@oracle.com>
Cc: Matthew Rosato <mjrosato@linux.ibm.com>
Cc: Oliver Upton <oupton@google.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Peter Gonda <pgonda@google.com>
Cc: Pierre Morel <pmorel@linux.ibm.com>
Cc: Tao Xu <tao3.xu@intel.com>
Link: https://lore.kernel.org/lkml/YvzuryClcn%2FvA0Gn@kernel.org/
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-08-19 15:30:34 -03:00
Arnaldo Carvalho de Melo
54cd4cde7c tools headers UAPI: Sync drm/i915_drm.h with the kernel sources
To pick up the changes in:

  a913bde810 ("drm/i915: Update i915 uapi documentation")
  525e93f631 ("drm/i915/uapi: add NEEDS_CPU_ACCESS hint")
  141f733bb3 ("drm/i915/uapi: expose the avail tracking")
  3f4309cbdc ("drm/i915/uapi: add probed_cpu_visible_size")
  a50794f26f ("uapi/drm/i915: Document memory residency and Flat-CCS capability of obj")

That don't add any new ioctl, so no changes in tooling.

This silences this perf build warning:

  Warning: Kernel ABI header at 'tools/include/uapi/drm/i915_drm.h' differs from latest version at 'include/uapi/drm/i915_drm.h'
  diff -u tools/include/uapi/drm/i915_drm.h include/uapi/drm/i915_drm.h

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Matthew Auld <matthew.auld@intel.com>
Cc: Matt Roper <matthew.d.roper@intel.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Niranjana Vishwanathapura <niranjana.vishwanathapura@intel.com>
Cc: Ramalingam C <ramalingam.c@intel.com>
Link: http://lore.kernel.org/lkml/Yvzrp9RFIeEkb5fI@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-08-19 15:30:34 -03:00
Arnaldo Carvalho de Melo
fabe0c61d8 tools headers UAPI: Sync linux/fscrypt.h with the kernel sources
To pick the changes from:

  6b2a51ff03 ("fscrypt: Add HCTR2 support for filename encryption")

That don't result in any changes in tooling, just causes this to be
rebuilt:

  CC      /tmp/build/perf-urgent/trace/beauty/sync_file_range.o
  LD      /tmp/build/perf-urgent/trace/beauty/perf-in.o

addressing this perf build warning:

  Warning: Kernel ABI header at 'tools/include/uapi/linux/fscrypt.h' differs from latest version at 'include/uapi/linux/fscrypt.h'
  diff -u tools/include/uapi/linux/fscrypt.h include/uapi/linux/fscrypt.h

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Herbert Xu <herbert@gondor.apana.org.au>
Cc: Ian Rogers <irogers@google.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Nathan Huckleberry <nhuck@google.com>
Link: https://lore.kernel.org/lkml/Yvzl8C7O1b+hf9GS@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-08-19 15:30:33 -03:00
Ali Saidi
2e21bcf051 perf tools: Sync addition of PERF_MEM_SNOOPX_PEER
Add a flag to the 'perf mem' data struct to signal that a request caused
a cache-to-cache transfer of a line from a peer of the requestor and
wasn't sourced from a lower cache level.

The line being moved from one peer cache to another has latency and
performance implications.

On Arm64 Neoverse systems the data source can indicate a cache-to-cache
transfer but not if the line is dirty or clean, so instead of
overloading HITM define a new flag that indicates this type of transfer.

Committer notes:

This really is not syncing with the kernel since the patch to the kernel
wasn't merged.

But we're going ahead of this as it seems trivial and is just a matter
of the perf kernel maintainers to give their ack or for us to find
another way of expressing this in the perf records synthesized in
userspace from the ARM64 hardware traces.

Reviewed-by: Leo Yan <leo.yan@linaro.org>
Signed-off-by: Ali Saidi <alisaidi@amazon.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Anshuman Khandual <anshuman.khandual@arm.com>
Cc: German Gomez <german.gomez@arm.com>
Cc: Gustavo A. R. Silva <gustavoars@kernel.org>
Cc: Ian Rogers <irogers@google.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: James Clark <james.clark@arm.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: John Garry <john.garry@huawei.com>
Cc: Kajol Jain <kjain@linux.ibm.com>
Cc: Like Xu <likexu@tencent.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Mike Leach <mike.leach@linaro.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Timothy Hayes <timothy.hayes@arm.com>
Cc: Will Deacon <will@kernel.org>
Cc: linux-arm-kernel@lists.infradead.org
Link: https://lore.kernel.org/r/20220811062451.435810-2-leo.yan@linaro.org
Signed-off-by: Leo Yan <leo.yan@linaro.org>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-08-11 19:11:36 -03:00
Linus Torvalds
4e23eeebb2 Bitmap patches for v6.0-rc1
This branch consists of:
 
 Qu Wenruo:
 lib: bitmap: fix the duplicated comments on bitmap_to_arr64()
 https://lore.kernel.org/lkml/0d85e1dbad52ad7fb5787c4432bdb36cbd24f632.1656063005.git.wqu@suse.com/
 
 Alexander Lobakin:
 bitops: let optimize out non-atomic bitops on compile-time constants
 https://lore.kernel.org/lkml/20220624121313.2382500-1-alexandr.lobakin@intel.com/T/
 
 Yury Norov:
 lib: cleanup bitmap-related headers
 https://lore.kernel.org/linux-arm-kernel/YtCVeOGLiQ4gNPSf@yury-laptop/T/#m305522194c4d38edfdaffa71fcaaf2e2ca00a961
 
 Alexander Lobakin:
 x86/olpc: fix 'logical not is only applied to the left hand side'
 https://www.spinics.net/lists/kernel/msg4440064.html
 
 Yury Norov:
 lib/nodemask: inline wrappers around bitmap
 https://lore.kernel.org/all/20220723214537.2054208-1-yury.norov@gmail.com/
 -----BEGIN PGP SIGNATURE-----
 
 iQGzBAABCgAdFiEEi8GdvG6xMhdgpu/4sUSA/TofvsgFAmLpVvwACgkQsUSA/Tof
 vsiAHgwAwS9pl8GJ+fKYnue2CYo9349d2oT6BBUs/Rv8uqYEa4QkpYsR7NS733TG
 pos0hhoRvSOzrUP4qppXUjfJ+NkzLgpnKFOeWfFoNAKlHuaaMRvF3Y0Q/P8g0/Kg
 HPWcCQLHyCH9Wjs3e2TTgRjxTrHuruD2VJ401/PX/lw0DicUhmev5mUFa10uwFkP
 ZJRprjoFn9HJ0Hk16pFZDi36d3YumhACOcWRiJdoBDrEPV3S6lm9EeOy/yHBNp5k
 9bKj+RboeT2t70KaZcKv+M5j1nu0cAhl7kRkjcxcmGyimI0l82Vgq9yFxhGqvWg8
 RnCrJ5EaO08FGCAKG9GEwzdiNa24Gdq5XZSpQA7JZHmhmchpnnlNenJicyv0gOQi
 abChZeWSEsyA+78l2+kk9nezfVKUOnKDEZQxBVTOyWsmZYxHZV94oam340VjQDaY
 4/fETdOy/qqPIxnpxAeFGWxZjcVaYiYPLj7KLPMsB0aAAF7pZrem465vSfgbrE81
 +gCdqrWd
 =4dTW
 -----END PGP SIGNATURE-----

Merge tag 'bitmap-6.0-rc1' of https://github.com/norov/linux

Pull bitmap updates from Yury Norov:

 - fix the duplicated comments on bitmap_to_arr64() (Qu Wenruo)

 - optimize out non-atomic bitops on compile-time constants (Alexander
   Lobakin)

 - cleanup bitmap-related headers (Yury Norov)

 - x86/olpc: fix 'logical not is only applied to the left hand side'
   (Alexander Lobakin)

 - lib/nodemask: inline wrappers around bitmap (Yury Norov)

* tag 'bitmap-6.0-rc1' of https://github.com/norov/linux: (26 commits)
  lib/nodemask: inline next_node_in() and node_random()
  powerpc: drop dependency on <asm/machdep.h> in archrandom.h
  x86/olpc: fix 'logical not is only applied to the left hand side'
  lib/cpumask: move some one-line wrappers to header file
  headers/deps: mm: align MANITAINERS and Docs with new gfp.h structure
  headers/deps: mm: Split <linux/gfp_types.h> out of <linux/gfp.h>
  headers/deps: mm: Optimize <linux/gfp.h> header dependencies
  lib/cpumask: move trivial wrappers around find_bit to the header
  lib/cpumask: change return types to unsigned where appropriate
  cpumask: change return types to bool where appropriate
  lib/bitmap: change type of bitmap_weight to unsigned long
  lib/bitmap: change return types to bool where appropriate
  arm: align find_bit declarations with generic kernel
  iommu/vt-d: avoid invalid memory access via node_online(NUMA_NO_NODE)
  lib/test_bitmap: test the tail after bitmap_to_arr64()
  lib/bitmap: fix off-by-one in bitmap_to_arr64()
  lib: test_bitmap: add compile-time optimization/evaluations assertions
  bitmap: don't assume compiler evaluates small mem*() builtins calls
  net/ice: fix initializing the bitmap in the switch code
  bitops: let optimize out non-atomic bitops on compile-time constants
  ...
2022-08-07 17:52:35 -07:00
Linus Torvalds
48a577dc1b perf tools changes for v6.0: 1st batch
- Introduce 'perf lock contention' subtool, using new lock contention
   tracepoints and using BPF for in kernel aggregation and then userspace
   processing using the perf tooling infrastructure for resolving symbols, target
   specification, etc.
 
   Since the new lock contention tracepoints don't provide lock names, get up to
   8 stack traces and display the first non-lock function symbol name as a caller:
 
   $ perf lock report -F acquired,contended,avg_wait,wait_total
 
                   Name   acquired  contended     avg wait    total wait
 
    update_blocked_a...         40         40      3.61 us     144.45 us
    kernfs_fop_open+...          5          5      3.64 us      18.18 us
     _nohz_idle_balance          3          3      2.65 us       7.95 us
    tick_do_update_j...          1          1      6.04 us       6.04 us
     ep_scan_ready_list          1          1      3.93 us       3.93 us
 
   Supports the usual 'perf record' + 'perf report' workflow as well as a
   BCC/bpftrace like mode where you start the tool and then press control+C to get
   results:
 
    $ sudo perf lock contention -b
   ^C
    contended   total wait     max wait     avg wait         type   caller
 
           42    192.67 us     13.64 us      4.59 us     spinlock   queue_work_on+0x20
           23     85.54 us     10.28 us      3.72 us     spinlock   worker_thread+0x14a
            6     13.92 us      6.51 us      2.32 us        mutex   kernfs_iop_permission+0x30
            3     11.59 us     10.04 us      3.86 us        mutex   kernfs_dop_revalidate+0x3c
            1      7.52 us      7.52 us      7.52 us     spinlock   kthread+0x115
            1      7.24 us      7.24 us      7.24 us     rwlock:W   sys_epoll_wait+0x148
            2      7.08 us      3.99 us      3.54 us     spinlock   delayed_work_timer_fn+0x1b
            1      6.41 us      6.41 us      6.41 us     spinlock   idle_balance+0xa06
            2      2.50 us      1.83 us      1.25 us        mutex   kernfs_iop_lookup+0x2f
            1      1.71 us      1.71 us      1.71 us        mutex   kernfs_iop_getattr+0x2c
   ...
 
 - Add new 'perf kwork' tool to trace time properties of kernel work (such as
   softirq, and workqueue), uses eBPF skeletons to collect info in kernel space,
   aggregating data that then gets processed by the userspace tool, e.g.:
 
   # perf kwork report
 
    Kwork Name      | Cpu | Total Runtime | Count | Max runtime | Max runtime start | Max runtime end |
   ----------------------------------------------------------------------------------------------------
    nvme0q5:130     | 004 |      1.101 ms |    49 |    0.051 ms |    26035.056403 s |  26035.056455 s |
    amdgpu:162      | 002 |      0.176 ms |     9 |    0.046 ms |    26035.268020 s |  26035.268066 s |
    nvme0q24:149    | 023 |      0.161 ms |    55 |    0.009 ms |    26035.655280 s |  26035.655288 s |
    nvme0q20:145    | 019 |      0.090 ms |    33 |    0.014 ms |    26035.939018 s |  26035.939032 s |
    nvme0q31:156    | 030 |      0.075 ms |    21 |    0.010 ms |    26035.052237 s |  26035.052247 s |
    nvme0q8:133     | 007 |      0.062 ms |    12 |    0.021 ms |    26035.416840 s |  26035.416861 s |
    nvme0q6:131     | 005 |      0.054 ms |    22 |    0.010 ms |    26035.199919 s |  26035.199929 s |
    nvme0q19:144    | 018 |      0.052 ms |    14 |    0.010 ms |    26035.110615 s |  26035.110625 s |
    nvme0q7:132     | 006 |      0.049 ms |    13 |    0.007 ms |    26035.125180 s |  26035.125187 s |
    nvme0q18:143    | 017 |      0.033 ms |    14 |    0.007 ms |    26035.169698 s |  26035.169705 s |
    nvme0q17:142    | 016 |      0.013 ms |     1 |    0.013 ms |    26035.565147 s |  26035.565160 s |
    enp5s0-rx-0:164 | 006 |      0.004 ms |     4 |    0.002 ms |    26035.928882 s |  26035.928884 s |
    enp5s0-tx-0:166 | 008 |      0.003 ms |     3 |    0.002 ms |    26035.870923 s |  26035.870925 s |
   --------------------------------------------------------------------------------------------------------
 
   See commit log messages for more examples with extra options to limit the events time window, etc.
 
 - Add support for new AMD IBS (Instruction Based Sampling) features:
 
   With the DataSrc extensions, the source of data can be decoded among:
  - Local L3 or other L1/L2 in CCX.
  - A peer cache in a near CCX.
  - Data returned from DRAM.
  - A peer cache in a far CCX.
  - DRAM address map with "long latency" bit set.
  - Data returned from MMIO/Config/PCI/APIC.
  - Extension Memory (S-Link, GenZ, etc - identified by the CS target
     and/or address map at DF's choice).
  - Peer Agent Memory.
 
 - Support hardware tracing with Intel PT on guest machines, combining the
   traces with the ones in the host machine.
 
 - Add a "-m" option to 'perf buildid-list' to show kernel and modules
   build-ids, to display all of the information needed to do external
   symbolization of kernel stack traces, such as those collected by
   bpf_get_stackid().
 
 - Add arch TSC frequency information to perf.data file headers.
 
 - Handle changes in the binutils disassembler function signatures in
   perf, bpftool and bpf_jit_disasm (Acked by the bpftool maintainer).
 
 - Fix building the perf perl binding with the newest gcc in distros such
   as fedora rawhide, where some new warnings were breaking the build as
   perf uses -Werror.
 
 - Add 'perf test' entry for branch stack sampling.
 
 - Add ARM SPE system wide 'perf test' entry.
 
 - Add user space counter reading tests to 'perf test'.
 
 - Build with python3 by default, if available.
 
 - Add python converter script for the vendor JSON event files.
 
 - Update vendor JSON files for alderlake, bonnell, broadwell, broadwellde,
   broadwellx, cascadelakex, elkhartlake, goldmont, goldmontplus, haswell,
   haswellx, icelake, icelakex, ivybridge, ivytown, jaketown, knightslanding,
   nehalemep, nehalemex, sandybridge, sapphirerapids, silvermont, skylake,
   skylakex, snowridgex, tigerlake, westmereep-dp, westmereep-sp and westmereex.
 
 - Add vendor JSON File for Intel meteorlake.
 
 - Add Arm Cortex-A78C and X1C JSON vendor event files.
 
 - Add workaround to symbol address reading from ELF files without phdr,
   falling back to the previoous equation.
 
 - Convert legacy map definition to BTF-defined in the perf BPF script test.
 
 - Rework prologue generation code to stop using libbpf deprecated APIs.
 
 - Add default hybrid events for 'perf stat' on x86.
 
 - Add topdown metrics in the default 'perf stat' on the hybrid machines (big/little cores).
 
 - Prefer sampled CPU when exporting JSON in 'perf data convert'
 
 - Fix ('perf stat CSV output linter') and ("Check branch stack sampling") 'perf test' entries on s390.
 
 Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
 -----BEGIN PGP SIGNATURE-----
 
 iHUEABYKAB0WIQR2GiIUctdOfX2qHhGyPKLppCJ+JwUCYuw6gwAKCRCyPKLppCJ+
 J5+iAP0RL6sKMhzdkRjRYfG8CluJ401YaPHadzv5jxP8gOZz2gEAsuYDrMF9t1zB
 4DqORfobdX9UQEJjP9oRltU73GM0swI=
 =2/M0
 -----END PGP SIGNATURE-----

Merge tag 'perf-tools-for-v6.0-2022-08-04' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux

Pull perf tools updates from Arnaldo Carvalho de Melo:

 - Introduce 'perf lock contention' subtool, using new lock contention
   tracepoints and using BPF for in kernel aggregation and then
   userspace processing using the perf tooling infrastructure for
   resolving symbols, target specification, etc.

   Since the new lock contention tracepoints don't provide lock names,
   get up to 8 stack traces and display the first non-lock function
   symbol name as a caller:

    $ perf lock report -F acquired,contended,avg_wait,wait_total

                    Name   acquired  contended     avg wait    total wait

     update_blocked_a...         40         40      3.61 us     144.45 us
     kernfs_fop_open+...          5          5      3.64 us      18.18 us
      _nohz_idle_balance          3          3      2.65 us       7.95 us
     tick_do_update_j...          1          1      6.04 us       6.04 us
      ep_scan_ready_list          1          1      3.93 us       3.93 us

   Supports the usual 'perf record' + 'perf report' workflow as well as
   a BCC/bpftrace like mode where you start the tool and then press
   control+C to get results:

     $ sudo perf lock contention -b
    ^C
    contended   total wait     max wait     avg wait         type   caller

            42    192.67 us     13.64 us      4.59 us     spinlock   queue_work_on+0x20
            23     85.54 us     10.28 us      3.72 us     spinlock   worker_thread+0x14a
             6     13.92 us      6.51 us      2.32 us        mutex   kernfs_iop_permission+0x30
             3     11.59 us     10.04 us      3.86 us        mutex   kernfs_dop_revalidate+0x3c
             1      7.52 us      7.52 us      7.52 us     spinlock   kthread+0x115
             1      7.24 us      7.24 us      7.24 us     rwlock:W   sys_epoll_wait+0x148
             2      7.08 us      3.99 us      3.54 us     spinlock   delayed_work_timer_fn+0x1b
             1      6.41 us      6.41 us      6.41 us     spinlock   idle_balance+0xa06
             2      2.50 us      1.83 us      1.25 us        mutex   kernfs_iop_lookup+0x2f
             1      1.71 us      1.71 us      1.71 us        mutex   kernfs_iop_getattr+0x2c
    ...

 - Add new 'perf kwork' tool to trace time properties of kernel work
   (such as softirq, and workqueue), uses eBPF skeletons to collect info
   in kernel space, aggregating data that then gets processed by the
   userspace tool, e.g.:

    # perf kwork report

     Kwork Name      | Cpu | Total Runtime | Count | Max runtime | Max runtime start | Max runtime end |
    ----------------------------------------------------------------------------------------------------
     nvme0q5:130     | 004 |      1.101 ms |    49 |    0.051 ms |    26035.056403 s |  26035.056455 s |
     amdgpu:162      | 002 |      0.176 ms |     9 |    0.046 ms |    26035.268020 s |  26035.268066 s |
     nvme0q24:149    | 023 |      0.161 ms |    55 |    0.009 ms |    26035.655280 s |  26035.655288 s |
     nvme0q20:145    | 019 |      0.090 ms |    33 |    0.014 ms |    26035.939018 s |  26035.939032 s |
     nvme0q31:156    | 030 |      0.075 ms |    21 |    0.010 ms |    26035.052237 s |  26035.052247 s |
     nvme0q8:133     | 007 |      0.062 ms |    12 |    0.021 ms |    26035.416840 s |  26035.416861 s |
     nvme0q6:131     | 005 |      0.054 ms |    22 |    0.010 ms |    26035.199919 s |  26035.199929 s |
     nvme0q19:144    | 018 |      0.052 ms |    14 |    0.010 ms |    26035.110615 s |  26035.110625 s |
     nvme0q7:132     | 006 |      0.049 ms |    13 |    0.007 ms |    26035.125180 s |  26035.125187 s |
     nvme0q18:143    | 017 |      0.033 ms |    14 |    0.007 ms |    26035.169698 s |  26035.169705 s |
     nvme0q17:142    | 016 |      0.013 ms |     1 |    0.013 ms |    26035.565147 s |  26035.565160 s |
     enp5s0-rx-0:164 | 006 |      0.004 ms |     4 |    0.002 ms |    26035.928882 s |  26035.928884 s |
     enp5s0-tx-0:166 | 008 |      0.003 ms |     3 |    0.002 ms |    26035.870923 s |  26035.870925 s |
    --------------------------------------------------------------------------------------------------------

   See commit log messages for more examples with extra options to limit
   the events time window, etc.

 - Add support for new AMD IBS (Instruction Based Sampling) features:

   With the DataSrc extensions, the source of data can be decoded among:
     - Local L3 or other L1/L2 in CCX.
     - A peer cache in a near CCX.
     - Data returned from DRAM.
     - A peer cache in a far CCX.
     - DRAM address map with "long latency" bit set.
     - Data returned from MMIO/Config/PCI/APIC.
     - Extension Memory (S-Link, GenZ, etc - identified by the CS target
       and/or address map at DF's choice).
     - Peer Agent Memory.

 - Support hardware tracing with Intel PT on guest machines, combining
   the traces with the ones in the host machine.

 - Add a "-m" option to 'perf buildid-list' to show kernel and modules
   build-ids, to display all of the information needed to do external
   symbolization of kernel stack traces, such as those collected by
   bpf_get_stackid().

 - Add arch TSC frequency information to perf.data file headers.

 - Handle changes in the binutils disassembler function signatures in
   perf, bpftool and bpf_jit_disasm (Acked by the bpftool maintainer).

 - Fix building the perf perl binding with the newest gcc in distros
   such as fedora rawhide, where some new warnings were breaking the
   build as perf uses -Werror.

 - Add 'perf test' entry for branch stack sampling.

 - Add ARM SPE system wide 'perf test' entry.

 - Add user space counter reading tests to 'perf test'.

 - Build with python3 by default, if available.

 - Add python converter script for the vendor JSON event files.

 - Update vendor JSON files for most Intel cores.

 - Add vendor JSON File for Intel meteorlake.

 - Add Arm Cortex-A78C and X1C JSON vendor event files.

 - Add workaround to symbol address reading from ELF files without phdr,
   falling back to the previoous equation.

 - Convert legacy map definition to BTF-defined in the perf BPF script
   test.

 - Rework prologue generation code to stop using libbpf deprecated APIs.

 - Add default hybrid events for 'perf stat' on x86.

 - Add topdown metrics in the default 'perf stat' on the hybrid machines
   (big/little cores).

 - Prefer sampled CPU when exporting JSON in 'perf data convert'

 - Fix ('perf stat CSV output linter') and ("Check branch stack
   sampling") 'perf test' entries on s390.

* tag 'perf-tools-for-v6.0-2022-08-04' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux: (169 commits)
  perf stat: Refactor __run_perf_stat() common code
  perf lock: Print the number of lost entries for BPF
  perf lock: Add --map-nr-entries option
  perf lock: Introduce struct lock_contention
  perf scripting python: Do not build fail on deprecation warnings
  genelf: Use HAVE_LIBCRYPTO_SUPPORT, not the never defined HAVE_LIBCRYPTO
  perf build: Suppress openssl v3 deprecation warnings in libcrypto feature test
  perf parse-events: Break out tracepoint and printing
  perf parse-events: Don't #define YY_EXTRA_TYPE
  tools bpftool: Don't display disassembler-four-args feature test
  tools bpftool: Fix compilation error with new binutils
  tools bpf_jit_disasm: Don't display disassembler-four-args feature test
  tools bpf_jit_disasm: Fix compilation error with new binutils
  tools perf: Fix compilation error with new binutils
  tools include: add dis-asm-compat.h to handle version differences
  tools build: Don't display disassembler-four-args feature test
  tools build: Add feature test for init_disassemble_info API changes
  perf test: Add ARM SPE system wide test
  perf tools: Rework prologue generation code
  perf bpf: Convert legacy map definition to BTF-defined
  ...
2022-08-06 09:36:08 -07:00
Linus Torvalds
3bd6e5854b asm-generic: updates for 6.0
There are three independent sets of changes:
 
  - Sai Prakash Ranjan adds tracing support to the asm-generic
    version of the MMIO accessors, which is intended to help
    understand problems with device drivers and has been part
    of Qualcomm's vendor kernels for many years.
 
  - A patch from Sebastian Siewior to rework the handling of
    IRQ stacks in softirqs across architectures, which is
    needed for enabling PREEMPT_RT.
 
  - The last patch to remove the CONFIG_VIRT_TO_BUS option and
    some of the code behind that, after the last users of this
    old interface made it in through the netdev, scsi, media and
    staging trees.
 -----BEGIN PGP SIGNATURE-----
 
 iQIzBAABCgAdFiEEo6/YBQwIrVS28WGKmmx57+YAGNkFAmLqPPEACgkQmmx57+YA
 GNlUbQ/+NpIsiA0JUrCGtySt8KrLHdA2dH9lJOR5/iuxfphscPFfWtpcPvcXQWmt
 a8u7wyI8SHW1ku4U0Y5sO0dBSldDnoIqJ5t4X5d7YNU9yVtEtucqQhZf+GkrPlVD
 1HkRu05B7y0k2BMn7BLhSvkpafs3f1lNGXjs8oFBdOF1/zwp/GjcrfCK7KFzqjwU
 dYrX0SOFlKFd4BZC75VfK+XcKg4LtwIOmJraRRl7alz2Q5Oop2hgjgZxXDPf//vn
 SPOhXJN/97i1FUpY2TkfHVH1NxbPfjCV4pUnjmLG0Y4NSy9UQ/ZcXHcywIdeuhfa
 0LySOIsAqBeccpYYYdg2ubiMDZOXkBfANu/sB9o/EhoHfB4svrbPRDhBIQZMFXJr
 MJYu+IYce2rvydA/nydo4q++pxR8v1ES1ZIo8bDux+q1CI/zbpQV+f98kPVRA0M7
 ajc+5GTIqNIsvHzzadq7eYxcj5Bi8Li2JA9sVkAQ+6iq1TVyeYayMc9eYwONlmqw
 MD+PFYc651pKtXZCfkLXPIKSwS0uPqBndAibuVhpZ0hxWaCBBdKvY9mrWcPxt0kA
 tMR8lrosbbrV2K48BFdWTOHvCs2FhHQxPGVPZ/iWuxTA0hHZ9tUlaEkSX+VM57IU
 KCYQLdWzT8J9vrgqSbgYKlb6pSPz6FIjTfut6NZMmshIbavHV/Q=
 =aTR0
 -----END PGP SIGNATURE-----

Merge tag 'asm-generic-6.0' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic

Pull asm-generic updates from Arnd Bergmann:
 "There are three independent sets of changes:

   - Sai Prakash Ranjan adds tracing support to the asm-generic version
     of the MMIO accessors, which is intended to help understand
     problems with device drivers and has been part of Qualcomm's vendor
     kernels for many years

   - A patch from Sebastian Siewior to rework the handling of IRQ stacks
     in softirqs across architectures, which is needed for enabling
     PREEMPT_RT

   - The last patch to remove the CONFIG_VIRT_TO_BUS option and some of
     the code behind that, after the last users of this old interface
     made it in through the netdev, scsi, media and staging trees"

* tag 'asm-generic-6.0' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic:
  uapi: asm-generic: fcntl: Fix typo 'the the' in comment
  arch/*/: remove CONFIG_VIRT_TO_BUS
  soc: qcom: geni: Disable MMIO tracing for GENI SE
  serial: qcom_geni_serial: Disable MMIO tracing for geni serial
  asm-generic/io: Add logging support for MMIO accessors
  KVM: arm64: Add a flag to disable MMIO trace for nVHE KVM
  lib: Add register read/write tracing support
  drm/meson: Fix overflow implicit truncation warnings
  irqchip/tegra: Fix overflow implicit truncation warnings
  coresight: etm4x: Use asm-generic IO memory barriers
  arm64: io: Use asm-generic high level MMIO accessors
  arch/*: Disable softirq stacks on PREEMPT_RT.
2022-08-05 10:07:23 -07:00
Linus Torvalds
f86d1fbbe7 Networking changes for 6.0.
Core
 ----
 
  - Refactor the forward memory allocation to better cope with memory
    pressure with many open sockets, moving from a per socket cache to
    a per-CPU one
 
  - Replace rwlocks with RCU for better fairness in ping, raw sockets
    and IP multicast router.
 
  - Network-side support for IO uring zero-copy send.
 
  - A few skb drop reason improvements, including codegen the source file
    with string mapping instead of using macro magic.
 
  - Rename reference tracking helpers to a more consistent
    netdev_* schema.
 
  - Adapt u64_stats_t type to address load/store tearing issues.
 
  - Refine debug helper usage to reduce the log noise caused by bots.
 
 BPF
 ---
  - Improve socket map performance, avoiding skb cloning on read
    operation.
 
  - Add support for 64 bits enum, to match types exposed by kernel.
 
  - Introduce support for sleepable uprobes program.
 
  - Introduce support for enum textual representation in libbpf.
 
  - New helpers to implement synproxy with eBPF/XDP.
 
  - Improve loop performances, inlining indirect calls when
    possible.
 
  - Removed all the deprecated libbpf APIs.
 
  - Implement new eBPF-based LSM flavor.
 
  - Add type match support, which allow accurate queries to the
    eBPF used types.
 
  - A few TCP congetsion control framework usability improvements.
 
  - Add new infrastructure to manipulate CT entries via eBPF programs.
 
  - Allow for livepatch (KLP) and BPF trampolines to attach to the same
    kernel function.
 
 Protocols
 ---------
 
  - Introduce per network namespace lookup tables for unix sockets,
    increasing scalability and reducing contention.
 
  - Preparation work for Wi-Fi 7 Multi-Link Operation (MLO) support.
 
  - Add support to forciby close TIME_WAIT TCP sockets via user-space
    tools.
 
  - Significant performance improvement for the TLS 1.3 receive path,
    both for zero-copy and not-zero-copy.
 
  - Support for changing the initial MTPCP subflow priority/backup
    status
 
  - Introduce virtually contingus buffers for sockets over RDMA,
    to cope better with memory pressure.
 
  - Extend CAN ethtool support with timestamping capabilities
 
  - Refactor CAN build infrastructure to allow building only the needed
    features.
 
 Driver API
 ----------
 
  - Remove devlink mutex to allow parallel commands on multiple links.
 
  - Add support for pause stats in distributed switch.
 
  - Implement devlink helpers to query and flash line cards.
 
  - New helper for phy mode to register conversion.
 
 New hardware / drivers
 ----------------------
 
  - Ethernet DSA driver for the rockchip mt7531 on BPI-R2 Pro.
 
  - Ethernet DSA driver for the Renesas RZ/N1 A5PSW switch.
 
  - Ethernet DSA driver for the Microchip LAN937x switch.
 
  - Ethernet PHY driver for the Aquantia AQR113C EPHY.
 
  - CAN driver for the OBD-II ELM327 interface.
 
  - CAN driver for RZ/N1 SJA1000 CAN controller.
 
  - Bluetooth: Infineon CYW55572 Wi-Fi plus Bluetooth combo device.
 
 Drivers
 -------
 
  - Intel Ethernet NICs:
    - i40e: add support for vlan pruning
    - i40e: add support for XDP framented packets
    - ice: improved vlan offload support
    - ice: add support for PPPoE offload
 
  - Mellanox Ethernet (mlx5)
    - refactor packet steering offload for performance and scalability
    - extend support for TC offload
    - refactor devlink code to clean-up the locking schema
    - support stacked vlans for bridge offloads
    - use TLS objects pool to improve connection rate
 
  - Netronome Ethernet NICs (nfp):
    - extend support for IPv6 fields mangling offload
    - add support for vepa mode in HW bridge
    - better support for virtio data path acceleration (VDPA)
    - enable TSO by default
 
  - Microsoft vNIC driver (mana)
    - add support for XDP redirect
 
  - Others Ethernet drivers:
    - bonding: add per-port priority support
    - microchip lan743x: extend phy support
    - Fungible funeth: support UDP segmentation offload and XDP xmit
    - Solarflare EF100: add support for virtual function representors
    - MediaTek SoC: add XDP support
 
  - Mellanox Ethernet/IB switch (mlxsw):
    - dropped support for unreleased H/W (XM router).
    - improved stats accuracy
    - unified bridge model coversion improving scalability
      (parts 1-6)
    - support for PTP in Spectrum-2 asics
 
  - Broadcom PHYs
    - add PTP support for BCM54210E
    - add support for the BCM53128 internal PHY
 
  - Marvell Ethernet switches (prestera):
    - implement support for multicast forwarding offload
 
  - Embedded Ethernet switches:
    - refactor OcteonTx MAC filter for better scalability
    - improve TC H/W offload for the Felix driver
    - refactor the Microchip ksz8 and ksz9477 drivers to share
      the probe code (parts 1, 2), add support for phylink
      mac configuration
 
  - Other WiFi:
    - Microchip wilc1000: diable WEP support and enable WPA3
    - Atheros ath10k: encapsulation offload support
 
 Old code removal:
 
  - Neterion vxge ethernet driver: this is untouched since more than
    10 years.
 
 Signed-off-by: Paolo Abeni <pabeni@redhat.com>
 -----BEGIN PGP SIGNATURE-----
 
 iQJGBAABCAAwFiEEg1AjqC77wbdLX2LbKSR5jcyPE6QFAmLqN+oSHHBhYmVuaUBy
 ZWRoYXQuY29tAAoJECkkeY3MjxOkB9kQAI9VqW0c3SfiTJnkVBEIovZ6Tnh5stD2
 UYFkh1BdchLsYxi7W4XMpVPSzRztiTP87mIx5c/KvIzj+QNeWL1XWRJSPdI9HhTD
 pTAA/tM2OG7bqrbyQiKDNfpQdNl7+kk1RwnYd+f9RFl1QVuIJaYhmjVwrsN5xF/+
 jUsotpROarM2dGFWiFwJbKhP2zMDT+6qEEahM8pEPggKhv8wRLYjany2cZVEe4e0
 WGUpbINAS8gEKm0Ob922WaDfDrcK/N1Z0jNz/kMaENkK18Vvc7F6bCO0DzAawKX9
 QZMMwm6mHp3EThflJAMAzCGIYiIcwLhykgdyj8rrjPhFrWbMD2Sdsbo21HOXU/8j
 u4aAhVl+d+h7emmbgBoJ8sycVJ7BQlXz7lX20sTgADv9xI4/dPhQ17CMRuwX6fXX
 JSrn6P6e1LTV5CEg6vrlSPnKPY6uhFn/cPw47FxCjRwJ9phVnp+8uZWQmf9Pz3yf
 Ok/tcj+juFbsmuOshHy2cbRkuNZNS0oRWlSTBo5795ZwOLSakMonR3L+ev2aOvzz
 DVrFp2Y/iIVwMSFdCbouYdYnhArPRhOAtCmZc2afY8aBN7aaMgrdTy3+mzUoHy3I
 FG3K+VuKpfi0vY4zn6ZoLZDIpyXIoJJ93RcSGltD32t3Dp1RaQMVEI4s45k05PVm
 1nYpXKHA8qML
 =hxEG
 -----END PGP SIGNATURE-----

Merge tag 'net-next-6.0' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next

Pull networking changes from Paolo Abeni:
 "Core:

   - Refactor the forward memory allocation to better cope with memory
     pressure with many open sockets, moving from a per socket cache to
     a per-CPU one

   - Replace rwlocks with RCU for better fairness in ping, raw sockets
     and IP multicast router.

   - Network-side support for IO uring zero-copy send.

   - A few skb drop reason improvements, including codegen the source
     file with string mapping instead of using macro magic.

   - Rename reference tracking helpers to a more consistent netdev_*
     schema.

   - Adapt u64_stats_t type to address load/store tearing issues.

   - Refine debug helper usage to reduce the log noise caused by bots.

  BPF:

   - Improve socket map performance, avoiding skb cloning on read
     operation.

   - Add support for 64 bits enum, to match types exposed by kernel.

   - Introduce support for sleepable uprobes program.

   - Introduce support for enum textual representation in libbpf.

   - New helpers to implement synproxy with eBPF/XDP.

   - Improve loop performances, inlining indirect calls when possible.

   - Removed all the deprecated libbpf APIs.

   - Implement new eBPF-based LSM flavor.

   - Add type match support, which allow accurate queries to the eBPF
     used types.

   - A few TCP congetsion control framework usability improvements.

   - Add new infrastructure to manipulate CT entries via eBPF programs.

   - Allow for livepatch (KLP) and BPF trampolines to attach to the same
     kernel function.

  Protocols:

   - Introduce per network namespace lookup tables for unix sockets,
     increasing scalability and reducing contention.

   - Preparation work for Wi-Fi 7 Multi-Link Operation (MLO) support.

   - Add support to forciby close TIME_WAIT TCP sockets via user-space
     tools.

   - Significant performance improvement for the TLS 1.3 receive path,
     both for zero-copy and not-zero-copy.

   - Support for changing the initial MTPCP subflow priority/backup
     status

   - Introduce virtually contingus buffers for sockets over RDMA, to
     cope better with memory pressure.

   - Extend CAN ethtool support with timestamping capabilities

   - Refactor CAN build infrastructure to allow building only the needed
     features.

  Driver API:

   - Remove devlink mutex to allow parallel commands on multiple links.

   - Add support for pause stats in distributed switch.

   - Implement devlink helpers to query and flash line cards.

   - New helper for phy mode to register conversion.

  New hardware / drivers:

   - Ethernet DSA driver for the rockchip mt7531 on BPI-R2 Pro.

   - Ethernet DSA driver for the Renesas RZ/N1 A5PSW switch.

   - Ethernet DSA driver for the Microchip LAN937x switch.

   - Ethernet PHY driver for the Aquantia AQR113C EPHY.

   - CAN driver for the OBD-II ELM327 interface.

   - CAN driver for RZ/N1 SJA1000 CAN controller.

   - Bluetooth: Infineon CYW55572 Wi-Fi plus Bluetooth combo device.

  Drivers:

   - Intel Ethernet NICs:
      - i40e: add support for vlan pruning
      - i40e: add support for XDP framented packets
      - ice: improved vlan offload support
      - ice: add support for PPPoE offload

   - Mellanox Ethernet (mlx5)
      - refactor packet steering offload for performance and scalability
      - extend support for TC offload
      - refactor devlink code to clean-up the locking schema
      - support stacked vlans for bridge offloads
      - use TLS objects pool to improve connection rate

   - Netronome Ethernet NICs (nfp):
      - extend support for IPv6 fields mangling offload
      - add support for vepa mode in HW bridge
      - better support for virtio data path acceleration (VDPA)
      - enable TSO by default

   - Microsoft vNIC driver (mana)
      - add support for XDP redirect

   - Others Ethernet drivers:
      - bonding: add per-port priority support
      - microchip lan743x: extend phy support
      - Fungible funeth: support UDP segmentation offload and XDP xmit
      - Solarflare EF100: add support for virtual function representors
      - MediaTek SoC: add XDP support

   - Mellanox Ethernet/IB switch (mlxsw):
      - dropped support for unreleased H/W (XM router).
      - improved stats accuracy
      - unified bridge model coversion improving scalability (parts 1-6)
      - support for PTP in Spectrum-2 asics

   - Broadcom PHYs
      - add PTP support for BCM54210E
      - add support for the BCM53128 internal PHY

   - Marvell Ethernet switches (prestera):
      - implement support for multicast forwarding offload

   - Embedded Ethernet switches:
      - refactor OcteonTx MAC filter for better scalability
      - improve TC H/W offload for the Felix driver
      - refactor the Microchip ksz8 and ksz9477 drivers to share the
        probe code (parts 1, 2), add support for phylink mac
        configuration

   - Other WiFi:
      - Microchip wilc1000: diable WEP support and enable WPA3
      - Atheros ath10k: encapsulation offload support

  Old code removal:

   - Neterion vxge ethernet driver: this is untouched since more than 10 years"

* tag 'net-next-6.0' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1890 commits)
  doc: sfp-phylink: Fix a broken reference
  wireguard: selftests: support UML
  wireguard: allowedips: don't corrupt stack when detecting overflow
  wireguard: selftests: update config fragments
  wireguard: ratelimiter: use hrtimer in selftest
  net/mlx5e: xsk: Discard unaligned XSK frames on striding RQ
  net: usb: ax88179_178a: Bind only to vendor-specific interface
  selftests: net: fix IOAM test skip return code
  net: usb: make USB_RTL8153_ECM non user configurable
  net: marvell: prestera: remove reduntant code
  octeontx2-pf: Reduce minimum mtu size to 60
  net: devlink: Fix missing mutex_unlock() call
  net/tls: Remove redundant workqueue flush before destroy
  net: txgbe: Fix an error handling path in txgbe_probe()
  net: dsa: Fix spelling mistakes and cleanup code
  Documentation: devlink: add add devlink-selftests to the table of contents
  dccp: put dccp_qpolicy_full() and dccp_qpolicy_push() in the same lock
  net: ionic: fix error check for vlan flags in ionic_set_nic_features()
  net: ice: fix error NETIF_F_HW_VLAN_CTAG_FILTER check in ice_vsi_sync_fltr()
  nfp: flower: add support for tunnel offload without key ID
  ...
2022-08-03 16:29:08 -07:00
Linus Torvalds
e087437a6f XArray/IDR update for 6.0
- Add appropriate might_alloc() annotations to the XArray APIs
 
  - Document that the IDR is deprecated
 -----BEGIN PGP SIGNATURE-----
 
 iQEzBAABCgAdFiEEejHryeLBw/spnjHrDpNsjXcpgj4FAmLpWggACgkQDpNsjXcp
 gj7OiAf+Ie0kxztC96srZXoaUUXM/OhNAUdHCyRMiH8DyRScrBpucj4QazPceAO0
 fOQ+Nupx0XtCeVJl4E3cmHIaG2utP3VYnI6cKhZhQJARCDS4Lynddd6Q4RDNyDQu
 /ibq2+/8XF5+RLZytir8MyqMI2DpdMikKHFNlLcFXLkIESsub3PUWeU7/YHajp1G
 gliXkDLScIUU1XHuVDB6Ol02rJ/mmMclvko2GHgDTeuQjEMqivR0NHTxZl2lRAeM
 zMqSkkywHhrYiEo/N+gEqaHNhr5O8IwG0qUVnI848AG+QxyqajRJ87fKDxP4UvxQ
 Ga7SiSwhnvxCwdvs8JaPtqSj2s5S0w==
 =IwpY
 -----END PGP SIGNATURE-----

Merge tag 'xarray-6.0' of git://git.infradead.org/users/willy/xarray

Pull XArray/IDR updates from Matthew Wilcox:

 - Add appropriate might_alloc() annotations to the XArray APIs

 - Document that the IDR is deprecated

* tag 'xarray-6.0' of git://git.infradead.org/users/willy/xarray:
  IDR: Note that the IDR API is deprecated
  XArray: Add calls to might_alloc()
2022-08-03 10:02:28 -07:00
Linus Torvalds
e2b5421007 flexible-array transformations in UAPI for 6.0-rc1
Hi Linus,
 
 Please, pull the following treewide patch that replaces zero-length arrays
 with flexible-array members in UAPI. This patch has been baking in
 linux-next for 5 weeks now.
 
 -fstrict-flex-arrays=3 is coming and we need to land these changes
 to prevent issues like these in the short future:
 
 ../fs/minix/dir.c:337:3: warning: 'strcpy' will always overflow; destination buffer has size 0,
 but the source string has length 2 (including NUL byte) [-Wfortify-source]
 		strcpy(de3->name, ".");
 		^
 
 Since these are all [0] to [] changes, the risk to UAPI is nearly zero. If
 this breaks anything, we can use a union with a new member name.
 
 Link: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101836
 
 Thanks
 --
 Gustavo
 -----BEGIN PGP SIGNATURE-----
 
 iQIzBAABCAAdFiEEkmRahXBSurMIg1YvRwW0y0cG2zEFAmLoNdcACgkQRwW0y0cG
 2zEVeg//QYJ3j2pbKt9zB6muO3SkrNoMPc5wpY/SITUeiDscukLvGzJG88eIZskl
 NaEjbmacHmdlQrBkUdr10i1+hkb2zRd6/j42GIDXEhhKTMoT2UxJCBp47KSvd7VY
 dKNLGsgQs3kwmmxLEGu6w6vywWpI5wxXTKWL1Q/RpUXoOnLmsMEbzKTjf12a1Edl
 9gPNY+tMHIHyB0pGIRXDY/ZF5c+FcRFn6kKeMVzJL0bnX7FI4UmYe83k9ajEiLWA
 MD3JAw/mNv2X0nizHHuQHIjtky8Pr+E8hKs5ni88vMYmFqeABsTw4R1LJykv/mYa
 NakU1j9tHYTKcs2Ju+gIvSKvmatKGNmOpti/8RAjEX1YY4cHlHWNsigVbVRLqfo7
 SKImlSUxOPGFS3HAJQCC9P/oZgICkUdD6sdLO1PVBnE1G3Fvxg5z6fGcdEuEZkVR
 PQwlYDm1nlTuScbkgVSBzyU/AkntVMJTuPWgbpNo+VgSXWZ8T/U8II0eGrFVf9rH
 +y5dAS52/bi6OP0la7fNZlq7tcPfNG9HJlPwPb1kQtuPT4m6CBhth/rRrDJwx8za
 0cpJT75Q3CI0wLZ7GN4yEjtNQrlAeeiYiS4LMQ/SFFtg1KzvmYYVmWDhOf0+mMDA
 f7bq4cxEg2LHwrhRgQQWowFVBu7yeiwKbcj9sybfA27bMqCtfto=
 =8yMq
 -----END PGP SIGNATURE-----

Merge tag 'flexible-array-transformations-UAPI-6.0-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gustavoars/linux

Pull uapi flexible array update from Gustavo Silva:
 "A treewide patch that replaces zero-length arrays with flexible-array
  members in UAPI. This has been baking in linux-next for 5 weeks now.

  '-fstrict-flex-arrays=3' is coming and we need to land these changes
  to prevent issues like these in the short future:

    fs/minix/dir.c:337:3: warning: 'strcpy' will always overflow; destination buffer has size 0, but the source string has length 2 (including NUL byte) [-Wfortify-source]
		strcpy(de3->name, ".");
		^

  Since these are all [0] to [] changes, the risk to UAPI is nearly
  zero. If this breaks anything, we can use a union with a new member
  name"

Link: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101836

* tag 'flexible-array-transformations-UAPI-6.0-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gustavoars/linux:
  treewide: uapi: Replace zero-length arrays with flexible-array members
2022-08-02 19:50:47 -07:00
Linus Torvalds
aad26f55f4 This was a moderately busy cycle for documentation, but nothing all that
earth-shaking:
 
 - More Chinese translations, and an update to the Italian translations.
   The Japanese, Korean, and traditional Chinese translations are
   more-or-less unmaintained at this point, instead.
 
 - Some build-system performance improvements.
 
 - The removal of the archaic submitting-drivers.rst document, with the
   movement of what useful material that remained into other docs.
 
 - Improvements to sphinx-pre-install to, hopefully, give more useful
   suggestions.
 
 - A number of build-warning fixes
 
 Plus the usual collection of typo fixes, updates, and more.
 -----BEGIN PGP SIGNATURE-----
 
 iQFDBAABCAAtFiEEIw+MvkEiF49krdp9F0NaE2wMflgFAmLn9OwPHGNvcmJldEBs
 d24ubmV0AAoJEBdDWhNsDH5YtrwIAJNZoDYJJIRuVHnFkAn5EJ4b/chnR1dSTBtn
 WdE/1zdAlMBWVlEGO48VZybph9Sk0v+cUGf+yviDgASQrfOhRRTkg/0u6XaBAYO0
 +C2D1QDd9DggGgajxsfJfTdD3IuB78mGmCQvP17XIJW+NK1CK9rXZBnj6WC5/HJw
 PCHzeeVreBxOS3W9GelMYa6vjVl7dv81x4DPllnsgU2AMk0/Ce0MVjeIZ695sOeP
 Ki6jZgC2GsgFSK5kBC35OiDe5q+fDzlLfek34EUCn4SIbMALSUYWO1db122w5Pme
 Ej0+UTBhD19WH1uB/rcVKnVWugi7UEUJexZsao+nC7UrdIVtYq0=
 =83BG
 -----END PGP SIGNATURE-----

Merge tag 'docs-6.0' of git://git.lwn.net/linux

Pull documentation updates from Jonathan Corbet:
 "This was a moderately busy cycle for documentation, but nothing
  all that earth-shaking:

   - More Chinese translations, and an update to the Italian
     translations.

     The Japanese, Korean, and traditional Chinese translations
     are more-or-less unmaintained at this point, instead.

   - Some build-system performance improvements.

   - The removal of the archaic submitting-drivers.rst document,
     with the movement of what useful material that remained into
     other docs.

   - Improvements to sphinx-pre-install to, hopefully, give more
     useful suggestions.

   - A number of build-warning fixes

  Plus the usual collection of typo fixes, updates, and more"

* tag 'docs-6.0' of git://git.lwn.net/linux: (92 commits)
  docs: efi-stub: Fix paths for x86 / arm stubs
  Docs/zh_CN: Update the translation of sched-stats to 5.19-rc8
  Docs/zh_CN: Update the translation of pci to 5.19-rc8
  Docs/zh_CN: Update the translation of pci-iov-howto to 5.19-rc8
  Docs/zh_CN: Update the translation of usage to 5.19-rc8
  Docs/zh_CN: Update the translation of testing-overview to 5.19-rc8
  Docs/zh_CN: Update the translation of sparse to 5.19-rc8
  Docs/zh_CN: Update the translation of kasan to 5.19-rc8
  Docs/zh_CN: Update the translation of iio_configfs to 5.19-rc8
  doc:it_IT: align Italian documentation
  docs: Remove spurious tag from admin-guide/mm/overcommit-accounting.rst
  Documentation: process: Update email client instructions for Thunderbird
  docs: ABI: correct QEMU fw_cfg spec path
  doc/zh_CN: remove submitting-driver reference from docs
  docs: zh_TW: align to submitting-drivers removal
  docs: zh_CN: align to submitting-drivers removal
  docs: ko_KR: howto: remove reference to removed submitting-drivers
  docs: ja_JP: howto: remove reference to removed submitting-drivers
  docs: it_IT: align to submitting-drivers removal
  docs: process: remove outdated submitting-drivers.rst
  ...
2022-08-02 19:24:24 -07:00
Linus Torvalds
b069122256 nolibc pull request for v5.20 (or whatever)
This branch provides nolibc updates, perhaps most notably improved testing
 via the "cd tools/include/nolibc; make headers" command.  This should
 be considered a smoke test.  More thorough testing is in the works.
 -----BEGIN PGP SIGNATURE-----
 
 iQJHBAABCgAxFiEEbK7UrM+RBIrCoViJnr8S83LZ+4wFAmLgM6UTHHBhdWxtY2tA
 a2VybmVsLm9yZwAKCRCevxLzctn7jOrgD/sFQzRgKVS2v3/rb+9IyIqwuCrniSBe
 e7SLfteLNg3e02jMX/eVwx/X6D3C6Weg1ucLG/v0liyPV3ODiX/cSJK48q7wBnOR
 /TNtBEvtBsoY7LNORf53qAm3x//fCTTdw2qlkWM6RXcmeR0NH/PWfcas2hRJYhl8
 hwkQaC9j2CcOLxgN75RcbOsmnV6x+CtLJkH/k2DlfHpnwoO953uyeG0wCAWzNzQn
 yFr3PXjOaJd2qNCPNsdMGpjush9tp+fm2E9gXiDj+vk49MWNgoM/nWQe/p7GB5V9
 YWKEMudpVbkxXvT6EFj+ctGS7RVvYYnhjicZvVEkZEtszx3muQLcuSOE+p9KQ7v+
 mRGyzvhNu7ZyhMSZWA1Qf5pqiu6L3XTp672RMsYcP4keqN5kC/A5hbNt8qGybEPg
 PXaQVZQpV15z7gluEM8FhUPbUL3J9PZsTgwPEzjgt3lyDdmE+KszHQCSD/UyN//8
 WZJ/gwweQeTtLz/U+i2dGiT5tWjQ8sWg32AobzbylkyX7D1qDqUu0GYai8dPfbWO
 y7vbn9IB+uL1c2MFiO3jJkYCY7UoGESNd2j0SFdNPWnZee5FeXht3SIHaqMOhnqF
 Oguigt5SUd3/jh5dzMgQPahAH0tKm1n/+W7jBi2ieV1Lz4dKpS8xjMhmmT+D/SaT
 M7C8+63JeQwY8A==
 =sLEE
 -----END PGP SIGNATURE-----

Merge tag 'nolibc.2022.07.27a' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu

Pull nolibc updates from Paul McKenney:
 "This provides nolibc updates, perhaps most notably improved testing
  via the 'cd tools/include/nolibc; make headers' command. This should
  be considered a smoke test. More thorough testing is in the works"

* tag 'nolibc.2022.07.27a' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu:
  tools/nolibc: add a help target to list supported targets
  tools/nolibc: make the default target build the headers
  tools/nolibc: fix the makefile to also work as "make -C tools ..."
  tools/nolibc/stdio: Add format attribute to enable printf warnings
  tools/nolibc/stdlib: Support overflow checking for older compiler versions
2022-08-02 19:22:24 -07:00
Andres Freund
a45b3d6926 tools include: add dis-asm-compat.h to handle version differences
binutils changed the signature of init_disassemble_info(), which now causes
compilation failures for tools/{perf,bpf}, e.g. on debian unstable.

Relevant binutils commit:

  https://sourceware.org/git/?p=binutils-gdb.git;a=commit;h=60a3da00bd5407f07

This commit introduces a wrapper for init_disassemble_info(), to avoid
spreading #ifdef DISASM_INIT_STYLED to a bunch of places. Subsequent
commits will use it to fix the build failures.

It likely is worth adding a wrapper for disassember(), to avoid the already
existing DISASM_FOUR_ARGS_SIGNATURE ifdefery.

Signed-off-by: Andres Freund <andres@anarazel.de>
Signed-off-by: Ben Hutchings <benh@debian.org>
Acked-by: Quentin Monnet <quentin@isovalent.com>
Cc: Alexei Starovoitov <ast@kernel.org>
Cc: Ben Hutchings <benh@debian.org>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Quentin Monnet <quentin@isovalent.com>
Cc: Sedat Dilek <sedat.dilek@gmail.com>
Cc: bpf@vger.kernel.org
Link: http://lore.kernel.org/lkml/20220622181918.ykrs5rsnmx3og4sv@alap3.anarazel.de
Link: https://lore.kernel.org/r/20220801013834.156015-4-andres@anarazel.de
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-08-01 15:29:49 -03:00
Arnaldo Carvalho de Melo
18808564aa Merge remote-tracking branch 'torvalds/master' into perf/core
To pick up the fixes that went upstream via acme/perf/urgent and to get
to v5.19.

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-08-01 08:59:31 -03:00
Jakub Kicinski
272ac32f56 Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
No conflicts.

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2022-07-28 18:21:16 -07:00
Linus Torvalds
6e7765cb47 asm-generic fixes for 5.19, part 2
Two more bug fixes for asm-generic, one addressing an incorrect
 Kconfig symbol reference and another one fixing a build failure
 for the perf tool on mips and possibly others.
 -----BEGIN PGP SIGNATURE-----
 
 iQIzBAABCgAdFiEEo6/YBQwIrVS28WGKmmx57+YAGNkFAmLhU4gACgkQmmx57+YA
 GNnW9A/+NCnHmZPGBhde00BNfcFUsoQCTSsqDy12iahKLaeqxbswjcM6B0xJhf4v
 M3iMZ5CpXJEWpjg1qETQVDkc2WUcEPGih+B58Et7Yc54szesW77IQUWQruPiuerE
 ELkVpJ6MDdWVDOw4FJvhXHeGoXTVNg/smAHagkIzezOvJPUVzWaJ+AcQSSJAS9Fc
 1vOM3QSMd/aWxOFA4uq3Sr9d7xtVCPc0njiOrfDV4HBJg8mL8HWxhFt5QYHXDgjw
 eWDZ0lo38qH23BXtV4gLILwukWCRPP0Zk+VlUmqO5NPK+2OAGm9AMym74XGI0SZn
 HNesso1KERfMuz8MKJyGmCUg7c2gfIOP/peRRNeTX3NdZJ7V1Mjdh2QpqT1mQ2BV
 CY14YgpJmzrJsAJpOwA2F4PL1tJLByPHPIPBNEad9QY/xXgqBciMPJQCZEm2XfDO
 Uj2WUQj2i9jueFceVusRedamoZHg1PyyD0Ig57nHEEsnZhqquoJLOK0QWm25jltJ
 g06SSBGGvVH1iP2MmLxcC/x9B73SMqMHEKUePM3Yinf0YoyqTJKC0Kf0vfqFpOzt
 bfzXiHU49tS7g1AZevWfVPTBpMyqSJgGY+Vimq/3baAD6pDsYbACT+yxBDNar0rq
 oHOhhXi0bLyM7D+wkZRTJtjipKHHsfi7cgRzVRHHPfG9mp0H0Cw=
 =2fva
 -----END PGP SIGNATURE-----

Merge tag 'asm-generic-fixes-5.19-2' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic

Pull asm-generic fixes from Arnd Bergmann:
 "Two more bug fixes for asm-generic, one addressing an incorrect
  Kconfig symbol reference and another one fixing a build failure for
  the perf tool on mips and possibly others"

* tag 'asm-generic-fixes-5.19-2' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic:
  asm-generic: remove a broken and needless ifdef conditional
  tools: Fixed MIPS builds due to struct flock re-definition
2022-07-27 09:50:18 -07:00
Arnaldo Carvalho de Melo
40d02efad9 Merge remote-tracking branch 'torvalds/master' into perf/core
To get upstream fixes.

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-07-27 11:08:48 -03:00
Yang Jihong
e432947ef5 tools lib: Add list_last_entry_or_null()
Add list_last_entry_or_null() to get the last element from a list,
returns NULL if the list is empty.

Signed-off-by: Yang Jihong <yangjihong1@huawei.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paul Clarke <pc@us.ibm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: https://lore.kernel.org/r/20220709015033.38326-6-yangjihong1@huawei.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-07-26 16:02:13 -03:00
Linus Torvalds
515f71412b * Check for invalid flags to KVM_CAP_X86_USER_SPACE_MSR
* Fix use of sched_setaffinity in selftests
 
 * Sync kernel headers to tools
 
 * Fix KVM_STATS_UNIT_MAX
 -----BEGIN PGP SIGNATURE-----
 
 iQFIBAABCAAyFiEE8TM4V0tmI4mGbHaCv/vSX3jHroMFAmLaTFwUHHBib256aW5p
 QHJlZGhhdC5jb20ACgkQv/vSX3jHroO5Dwf/bRHhFs7XXdC5YU687bEFq/8/XCbY
 wczM6cEIsWk0chzx92xIXzjb6DKPhrUFjGNH2C55XhLwHhCCUI+Q0zCfZ89ghjdX
 Fe3fNcs6SAq6aLPjRBkk0+vt1jq233KzIV/GQJ5FivocPlWX562FXVEXoB/T26Ml
 ljTmtPBn4Hd+LIE+7+HED2qCNzvNYtx3KGGTsZR7hcjoQmfFjXg+OTN0Uqsa+enW
 lCEcN/gDMaTWFxY7lII63IJA4mE4WkdfYWjzuzvfUFsNU0IQZk+NrVZpiAP9zXeS
 20o9nzetS7h1enLWqdGvJ+m5ot19l24nJeWZ8QQsS3T4XF2h7vL0lY/WBg==
 =BDnJ
 -----END PGP SIGNATURE-----

Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm

Pull kvm fixes from Paolo Bonzini:

 - Check for invalid flags to KVM_CAP_X86_USER_SPACE_MSR

 - Fix use of sched_setaffinity in selftests

 - Sync kernel headers to tools

 - Fix KVM_STATS_UNIT_MAX

* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
  KVM: x86: Protect the unused bits in MSR exiting flags
  tools headers UAPI: Sync linux/kvm.h with the kernel sources
  KVM: selftests: Fix target thread to be migrated in rseq_test
  KVM: stats: Fix value for KVM_STATS_UNIT_MAX for boolean stats
2022-07-23 10:22:26 -07:00
Jakub Kicinski
b3fce974d4 Merge https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next
Daniel Borkmann says:

====================
bpf-next 2022-07-22

We've added 73 non-merge commits during the last 12 day(s) which contain
a total of 88 files changed, 3458 insertions(+), 860 deletions(-).

The main changes are:

1) Implement BPF trampoline for arm64 JIT, from Xu Kuohai.

2) Add ksyscall/kretsyscall section support to libbpf to simplify tracing kernel
   syscalls through kprobe mechanism, from Andrii Nakryiko.

3) Allow for livepatch (KLP) and BPF trampolines to attach to the same kernel
   function, from Song Liu & Jiri Olsa.

4) Add new kfunc infrastructure for netfilter's CT e.g. to insert and change
   entries, from Kumar Kartikeya Dwivedi & Lorenzo Bianconi.

5) Add a ksym BPF iterator to allow for more flexible and efficient interactions
   with kernel symbols, from Alan Maguire.

6) Bug fixes in libbpf e.g. for uprobe binary path resolution, from Dan Carpenter.

7) Fix BPF subprog function names in stack traces, from Alexei Starovoitov.

8) libbpf support for writing custom perf event readers, from Jon Doron.

9) Switch to use SPDX tag for BPF helper man page, from Alejandro Colomar.

10) Fix xsk send-only sockets when in busy poll mode, from Maciej Fijalkowski.

11) Reparent BPF maps and their charging on memcg offlining, from Roman Gushchin.

12) Multiple follow-up fixes around BPF lsm cgroup infra, from Stanislav Fomichev.

13) Use bootstrap version of bpftool where possible to speed up builds, from Pu Lehui.

14) Cleanup BPF verifier's check_func_arg() handling, from Joanne Koong.

15) Make non-prealloced BPF map allocations low priority to play better with
    memcg limits, from Yafang Shao.

16) Fix BPF test runner to reject zero-length data for skbs, from Zhengchao Shao.

17) Various smaller cleanups and improvements all over the place.

* https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next: (73 commits)
  bpf: Simplify bpf_prog_pack_[size|mask]
  bpf: Support bpf_trampoline on functions with IPMODIFY (e.g. livepatch)
  bpf, x64: Allow to use caller address from stack
  ftrace: Allow IPMODIFY and DIRECT ops on the same function
  ftrace: Add modify_ftrace_direct_multi_nolock
  bpf/selftests: Fix couldn't retrieve pinned program in xdp veth test
  bpf: Fix build error in case of !CONFIG_DEBUG_INFO_BTF
  selftests/bpf: Fix test_verifier failed test in unprivileged mode
  selftests/bpf: Add negative tests for new nf_conntrack kfuncs
  selftests/bpf: Add tests for new nf_conntrack kfuncs
  selftests/bpf: Add verifier tests for trusted kfunc args
  net: netfilter: Add kfuncs to set and change CT status
  net: netfilter: Add kfuncs to set and change CT timeout
  net: netfilter: Add kfuncs to allocate and insert CT
  net: netfilter: Deduplicate code in bpf_{xdp,skb}_ct_lookup
  bpf: Add documentation for kfuncs
  bpf: Add support for forcing kfunc args to be trusted
  bpf: Switch to new kfunc flags infrastructure
  tools/resolve_btfids: Add support for 8-byte BTF sets
  bpf: Introduce 8-byte BTF set
  ...
====================

Link: https://lore.kernel.org/r/20220722221218.29943-1-daniel@iogearbox.net
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2022-07-22 16:55:44 -07:00
Slark Xiao
6f05e014b9 uapi: asm-generic: fcntl: Fix typo 'the the' in comment
Replace 'the the' with 'the' in the comment.

Signed-off-by: Slark Xiao <slark_xiao@163.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2022-07-22 14:54:22 +02:00
Jakub Kicinski
6e0e846ee2 Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
No conflicts.

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2022-07-21 13:03:39 -07:00
Florian Fainelli
9b31e60800 tools: Fixed MIPS builds due to struct flock re-definition
Building perf for MIPS failed after 9f79b8b723 ("uapi: simplify
__ARCH_FLOCK{,64}_PAD a little") with the following error:

  CC
/home/fainelli/work/buildroot/output/bmips/build/linux-custom/tools/perf/trace/beauty/fcntl.o
In file included from
../../../../host/mipsel-buildroot-linux-gnu/sysroot/usr/include/asm/fcntl.h:77,
                 from ../include/uapi/linux/fcntl.h:5,
                 from trace/beauty/fcntl.c:10:
../include/uapi/asm-generic/fcntl.h:188:8: error: redefinition of
'struct flock'
 struct flock {
        ^~~~~
In file included from ../include/uapi/linux/fcntl.h:5,
                 from trace/beauty/fcntl.c:10:
../../../../host/mipsel-buildroot-linux-gnu/sysroot/usr/include/asm/fcntl.h:63:8:
note: originally defined here
 struct flock {
        ^~~~~

This is due to the local copy under
tools/include/uapi/asm-generic/fcntl.h including the toolchain's kernel
headers which already define 'struct flock' and define
HAVE_ARCH_STRUCT_FLOCK to future inclusions make a decision as to
whether re-defining 'struct flock' is appropriate or not.

Make sure what do not re-define 'struct flock'
when HAVE_ARCH_STRUCT_FLOCK is already defined.

Fixes: 9f79b8b723 ("uapi: simplify __ARCH_FLOCK{,64}_PAD a little")
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
[arnd: sync with include/uapi/asm-generic/fcntl.h as well]
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2022-07-20 12:55:33 +02:00
Joanne Koong
bdb2bc7599 bpf: fix bpf_skb_pull_data documentation
Fix documentation for bpf_skb_pull_data() helper for
when len == 0.

Fixes: fa15601ab3 ("bpf: add documentation for eBPF helpers (33-41)")
Signed-off-by: Joanne Koong <joannelkoong@gmail.com>
Acked-by: Quentin Monnet <quentin@isovalent.com>
Acked-by: Martin KaFai Lau <kafai@fb.com>
Link: https://lore.kernel.org/r/20220715193800.3940070-1-joannelkoong@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2022-07-19 09:57:04 -07:00
Paolo Bonzini
dc951e22a1 tools headers UAPI: Sync linux/kvm.h with the kernel sources
Silence this perf build warning:

  Warning: Kernel ABI header at 'tools/include/uapi/linux/kvm.h' differs from latest version at 'include/uapi/linux/kvm.h'
  diff -u tools/include/uapi/linux/kvm.h include/uapi/linux/kvm.h

Reported-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2022-07-19 09:16:53 -04:00
Arnaldo Carvalho de Melo
eee51fe38e tools headers UAPI: Sync linux/kvm.h with the kernel sources
To pick the changes in:

  1b870fa557 ("kvm: stats: tell userspace which values are boolean")

That just rebuilds perf, as these patches don't add any new KVM ioctl to
be harvested for the the 'perf trace' ioctl syscall argument
beautifiers.

This is also by now used by tools/testing/selftests/kvm/, a simple test
build succeeded.

This silences this perf build warning:

  Warning: Kernel ABI header at 'tools/include/uapi/linux/kvm.h' differs from latest version at 'include/uapi/linux/kvm.h'
  diff -u tools/include/uapi/linux/kvm.h include/uapi/linux/kvm.h

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Link: http://lore.kernel.org/lkml/YtQLDvQrBhJNl3n5@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-07-17 10:14:07 -03:00
Yury Norov
4dea97f863 lib/bitmap: change type of bitmap_weight to unsigned long
bitmap_weight() doesn't return negative values, so change it's type
to unsigned long. It may help compiler to generate better code and
catch bugs.

Signed-off-by: Yury Norov <yury.norov@gmail.com>
2022-07-15 06:35:54 -07:00
Jakub Kicinski
816cd16883 Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
include/net/sock.h
  310731e2f1 ("net: Fix data-races around sysctl_mem.")
  e70f3c7012 ("Revert "net: set SK_MEM_QUANTUM to 4096"")
https://lore.kernel.org/all/20220711120211.7c8b7cba@canb.auug.org.au/

net/ipv4/fib_semantics.c
  747c143072 ("ip: fix dflt addr selection for connected nexthop")
  d62607c3fe ("net: rename reference+tracking helpers")

net/tls/tls.h
include/net/tls.h
  3d8c51b25a ("net/tls: Check for errors in tls_device_init")
  5879031423 ("tls: create an internal header")

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2022-07-14 15:27:35 -07:00
Yury Norov
e2863a7859 lib/bitmap: change return types to bool where appropriate
Some bitmap functions return boolean results in int variables. Fix it
by changing return types to bool.

Signed-off-by: Yury Norov <yury.norov@gmail.com>
2022-07-14 15:21:43 -07:00
Linus Torvalds
9bd572ec7a Including fixes from netfilter, bpf and wireless.
Current release - regressions:
 
  - wifi: rtw88: fix write to const table of channel parameters
 
 Current release - new code bugs:
 
  - mac80211: add gfp_t parameter to
    ieeee80211_obss_color_collision_notify
 
  - mlx5:
    - TC, allow offload from uplink to other PF's VF
    - Lag, decouple FDB selection and shared FDB
    - Lag, correct get the port select mode str
 
  - bnxt_en: fix and simplify XDP transmit path
 
  - r8152: fix accessing unset transport header
 
 Previous releases - regressions:
 
  - conntrack: fix crash due to confirmed bit load reordering
    (after atomic -> refcount conversion)
 
  - stmmac: dwc-qos: disable split header for Tegra194
 
 Previous releases - always broken:
 
  - mlx5e: ring the TX doorbell on DMA errors
 
  - bpf: make sure mac_header was set before using it
 
  - mac80211: do not wake queues on a vif that is being stopped
 
  - mac80211: fix queue selection for mesh/OCB interfaces
 
  - ip: fix dflt addr selection for connected nexthop
 
  - seg6: fix skb checksums for SRH encapsulation/insertion
 
  - xdp: fix spurious packet loss in generic XDP TX path
 
  - bunch of sysctl data race fixes
 
  - nf_log: incorrect offset to network header
 
 Misc:
 
  - bpf: add flags arg to bpf_dynptr_read and bpf_dynptr_write APIs
 
 Signed-off-by: Jakub Kicinski <kuba@kernel.org>
 -----BEGIN PGP SIGNATURE-----
 
 iQIzBAABCAAdFiEE6jPA+I1ugmIBA4hXMUZtbf5SIrsFAmLQXuAACgkQMUZtbf5S
 Irv3sBAAxoD5A0Q5zRLmfTvbXth8fVfWmqvDfxJvOcChr97Q/JyCTZrmSIqhIz85
 6ADxF45PuOivpBU8dA3MF9gCtvlWcU6SJpRVZOP0v+FfZBESGdskG9OWXlS50mht
 IF64LlEzfjvD8Mylf2xiuuuaDcDzuF9s2KXCBSh3qFDXP9VYPaSMjA22+YwApkvT
 29EKSujBIod0ScIeP6rA7nZKtxNloGp+tGNeHqxP+LrALq5pQlwA43wTyvcgvfME
 QgGsqUcn4UzaxJ6YIFNNwx+KRJI7JCdgxNupehaExdnvZJNHDuxSZKXwkCKFOhB6
 vOQDDbfDCtTaFfw0elpF18hayUtDyl9ezAR1DlxZWwyPv46gHFlH/PreXLf4Zvvh
 R8dAP5YLQjtNri3Ae8gdiQYzct0WXKjiauNdjF60Hh1dXe6j01Vbqh92J96Zr14U
 uxDRWzKi1pyfrAULY4BB7sRLXc6IllcUFEnMmKYhYl7afV8VB0OjQ83VKjxW4az8
 gcczXejgW6rNcV128vLYHICUCawoiIlA29efM17vGG7Q65O/vhqOxO8Moi1hiQN+
 2GwMWxCQ3lIXz41oQ2TNt3ekDYuSFhj8T/qyQEOckp+QW91nbseJBIhyU7MF0WE9
 e5sETK8CJMzQwF/zkJMAuohvc+IelGdhRayHVGBYWGwVN1CCqiU=
 =TFnI
 -----END PGP SIGNATURE-----

Merge tag 'net-5.19-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net

Pull networking fixes from Jakub Kicinski:
 "Including fixes from netfilter, bpf and wireless.

  Still no major regressions, the release continues to be calm. An
  uptick of fixes this time around due to trivial data race fixes and
  patches flowing down from subtrees.

  There has been a few driver fixes (particularly a few fixes for false
  positives due to 66e4c8d950 which went into -next in May!) that make
  me worry the wide testing is not exactly fully through.

  So "calm" but not "let's just cut the final ASAP" vibes over here.

  Current release - regressions:

   - wifi: rtw88: fix write to const table of channel parameters

  Current release - new code bugs:

   - mac80211: add gfp_t arg to ieeee80211_obss_color_collision_notify

   - mlx5:
      - TC, allow offload from uplink to other PF's VF
      - Lag, decouple FDB selection and shared FDB
      - Lag, correct get the port select mode str

   - bnxt_en: fix and simplify XDP transmit path

   - r8152: fix accessing unset transport header

  Previous releases - regressions:

   - conntrack: fix crash due to confirmed bit load reordering (after
     atomic -> refcount conversion)

   - stmmac: dwc-qos: disable split header for Tegra194

  Previous releases - always broken:

   - mlx5e: ring the TX doorbell on DMA errors

   - bpf: make sure mac_header was set before using it

   - mac80211: do not wake queues on a vif that is being stopped

   - mac80211: fix queue selection for mesh/OCB interfaces

   - ip: fix dflt addr selection for connected nexthop

   - seg6: fix skb checksums for SRH encapsulation/insertion

   - xdp: fix spurious packet loss in generic XDP TX path

   - bunch of sysctl data race fixes

   - nf_log: incorrect offset to network header

  Misc:

   - bpf: add flags arg to bpf_dynptr_read and bpf_dynptr_write APIs"

* tag 'net-5.19-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (87 commits)
  nfp: flower: configure tunnel neighbour on cmsg rx
  net/tls: Check for errors in tls_device_init
  MAINTAINERS: Add an additional maintainer to the AMD XGBE driver
  xen/netback: avoid entering xenvif_rx_next_skb() with an empty rx queue
  selftests/net: test nexthop without gw
  ip: fix dflt addr selection for connected nexthop
  net: atlantic: remove aq_nic_deinit() when resume
  net: atlantic: remove deep parameter on suspend/resume functions
  sfc: fix kernel panic when creating VF
  seg6: bpf: fix skb checksum in bpf_push_seg6_encap()
  seg6: fix skb checksum in SRv6 End.B6 and End.B6.Encaps behaviors
  seg6: fix skb checksum evaluation in SRH encapsulation/insertion
  sfc: fix use after free when disabling sriov
  net: sunhme: output link status with a single print.
  r8152: fix accessing unset transport header
  net: stmmac: fix leaks in probe
  net: ftgmac100: Hold reference returned by of_get_child_by_name()
  nexthop: Fix data-races around nexthop_compat_mode.
  ipv4: Fix data-races around sysctl_ip_dynaddr.
  tcp: Fix a data-race around sysctl_tcp_ecn_fallback.
  ...
2022-07-14 12:48:07 -07:00
Linus Torvalds
ce114c8668 Just when you thought that all the speculation bugs were addressed and
solved and the nightmare is complete, here's the next one: speculating
 after RET instructions and leaking privileged information using the now
 pretty much classical covert channels.
 
 It is called RETBleed and the mitigation effort and controlling
 functionality has been modelled similar to what already existing
 mitigations provide.
 -----BEGIN PGP SIGNATURE-----
 
 iQIzBAABCgAdFiEEzv7L6UO9uDPlPSfHEsHwGGHeVUoFAmLKqAgACgkQEsHwGGHe
 VUoM5w/8CSvwPZ3otkhmu8MrJPtWc7eLDPjYN4qQP+19e+bt094MoozxeeWG2wmp
 hkDJAYHT2Oik/qDuEdhFgNYwS7XGgbV3Py3B8syO4//5SD5dkOSG+QqFXvXMdFri
 YsVqqNkjJOWk/YL9Ql5RS/xQewsrr0OqEyWWocuI6XAvfWV4kKvlRSd+6oPqtZEO
 qYlAHTXElyIrA/gjmxChk1HTt5HZtK3uJLf4twNlUfzw7LYFf3+sw3bdNuiXlyMr
 WcLXMwGpS0idURwP3mJa7JRuiVBzb4+kt8mWwWqA02FkKV45FRRRFhFUsy667r00
 cdZBaWdy+b7dvXeliO3FN/x1bZwIEUxmaNy1iAClph4Ifh0ySPUkxAr8EIER7YBy
 bstDJEaIqgYg8NIaD4oF1UrG0ZbL0ImuxVaFdhG1hopQsh4IwLSTLgmZYDhfn/0i
 oSqU0Le+A7QW9s2A2j6qi7BoAbRW+gmBuCgg8f8ECYRkFX1ZF6mkUtnQxYrU7RTq
 rJWGW9nhwM9nRxwgntZiTjUUJ2HtyXEgYyCNjLFCbEBfeG5QTg7XSGFhqDbgoymH
 85vsmSXYxgTgQ/kTW7Fs26tOqnP2h1OtLJZDL8rg49KijLAnISClEgohYW01CWQf
 ZKMHtz3DM0WBiLvSAmfGifScgSrLB5AjtvFHT0hF+5/okEkinVk=
 =09fW
 -----END PGP SIGNATURE-----

Merge tag 'x86_bugs_retbleed' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull x86 retbleed fixes from Borislav Petkov:
 "Just when you thought that all the speculation bugs were addressed and
  solved and the nightmare is complete, here's the next one: speculating
  after RET instructions and leaking privileged information using the
  now pretty much classical covert channels.

  It is called RETBleed and the mitigation effort and controlling
  functionality has been modelled similar to what already existing
  mitigations provide"

* tag 'x86_bugs_retbleed' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (54 commits)
  x86/speculation: Disable RRSBA behavior
  x86/kexec: Disable RET on kexec
  x86/bugs: Do not enable IBPB-on-entry when IBPB is not supported
  x86/entry: Move PUSH_AND_CLEAR_REGS() back into error_entry
  x86/bugs: Add Cannon lake to RETBleed affected CPU list
  x86/retbleed: Add fine grained Kconfig knobs
  x86/cpu/amd: Enumerate BTC_NO
  x86/common: Stamp out the stepping madness
  KVM: VMX: Prevent RSB underflow before vmenter
  x86/speculation: Fill RSB on vmexit for IBRS
  KVM: VMX: Fix IBRS handling after vmexit
  KVM: VMX: Prevent guest RSB poisoning attacks with eIBRS
  KVM: VMX: Convert launched argument to flags
  KVM: VMX: Flatten __vmx_vcpu_run()
  objtool: Re-add UNWIND_HINT_{SAVE_RESTORE}
  x86/speculation: Remove x86_spec_ctrl_mask
  x86/speculation: Use cached host SPEC_CTRL value for guest entry/exit
  x86/speculation: Fix SPEC_CTRL write on SMT state change
  x86/speculation: Fix firmware entry SPEC_CTRL handling
  x86/speculation: Fix RSB filling with CONFIG_RETPOLINE=n
  ...
2022-07-11 18:15:25 -07:00
Matthew Wilcox (Oracle)
1dd685c414 XArray: Add calls to might_alloc()
Catch bogus GFP flags deterministically, instead of occasionally
when we actually have to allocate memory.

Reported-by: Nikolay Borisov <nborisov@suse.com>
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
2022-07-10 21:17:30 -04:00
Jakub Kicinski
0076cad301 Merge https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next
Daniel Borkmann says:

====================
pull-request: bpf-next 2022-07-09

We've added 94 non-merge commits during the last 19 day(s) which contain
a total of 125 files changed, 5141 insertions(+), 6701 deletions(-).

The main changes are:

1) Add new way for performing BTF type queries to BPF, from Daniel Müller.

2) Add inlining of calls to bpf_loop() helper when its function callback is
   statically known, from Eduard Zingerman.

3) Implement BPF TCP CC framework usability improvements, from Jörn-Thorben Hinz.

4) Add LSM flavor for attaching per-cgroup BPF programs to existing LSM
   hooks, from Stanislav Fomichev.

5) Remove all deprecated libbpf APIs in prep for 1.0 release, from Andrii Nakryiko.

6) Add benchmarks around local_storage to BPF selftests, from Dave Marchevsky.

7) AF_XDP sample removal (given move to libxdp) and various improvements around AF_XDP
   selftests, from Magnus Karlsson & Maciej Fijalkowski.

8) Add bpftool improvements for memcg probing and bash completion, from Quentin Monnet.

9) Add arm64 JIT support for BPF-2-BPF coupled with tail calls, from Jakub Sitnicki.

10) Sockmap optimizations around throughput of UDP transmissions which have been
    improved by 61%, from Cong Wang.

11) Rework perf's BPF prologue code to remove deprecated functions, from Jiri Olsa.

12) Fix sockmap teardown path to avoid sleepable sk_psock_stop, from John Fastabend.

13) Fix libbpf's cleanup around legacy kprobe/uprobe on error case, from Chuang Wang.

14) Fix libbpf's bpf_helpers.h to work with gcc for the case of its sec/pragma
    macro, from James Hilliard.

15) Fix libbpf's pt_regs macros for riscv to use a0 for RC register, from Yixun Lan.

16) Fix bpftool to show the name of type BPF_OBJ_LINK, from Yafang Shao.

* https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next: (94 commits)
  selftests/bpf: Fix xdp_synproxy build failure if CONFIG_NF_CONNTRACK=m/n
  bpf: Correctly propagate errors up from bpf_core_composites_match
  libbpf: Disable SEC pragma macro on GCC
  bpf: Check attach_func_proto more carefully in check_return_code
  selftests/bpf: Add test involving restrict type qualifier
  bpftool: Add support for KIND_RESTRICT to gen min_core_btf command
  MAINTAINERS: Add entry for AF_XDP selftests files
  selftests, xsk: Rename AF_XDP testing app
  bpf, docs: Remove deprecated xsk libbpf APIs description
  selftests/bpf: Add benchmark for local_storage RCU Tasks Trace usage
  libbpf, riscv: Use a0 for RC register
  libbpf: Remove unnecessary usdt_rel_ip assignments
  selftests/bpf: Fix few more compiler warnings
  selftests/bpf: Fix bogus uninitialized variable warning
  bpftool: Remove zlib feature test from Makefile
  libbpf: Cleanup the legacy uprobe_event on failed add/attach_event()
  libbpf: Fix wrong variable used in perf_event_uprobe_open_legacy()
  libbpf: Cleanup the legacy kprobe_event on failed add/attach_event()
  selftests/bpf: Add type match test against kernel's task_struct
  selftests/bpf: Add nested type to type based tests
  ...
====================

Link: https://lore.kernel.org/r/20220708233145.32365-1-daniel@iogearbox.net
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2022-07-09 12:24:16 -07:00
Jakub Kicinski
7c895ef884 Merge https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf
Daniel Borkmann says:

====================
bpf 2022-07-08

We've added 3 non-merge commits during the last 2 day(s) which contain
a total of 7 files changed, 40 insertions(+), 24 deletions(-).

The main changes are:

1) Fix cBPF splat triggered by skb not having a mac header, from Eric Dumazet.

2) Fix spurious packet loss in generic XDP when pushing packets out (note
   that native XDP is not affected by the issue), from Johan Almbladh.

3) Fix bpf_dynptr_{read,write}() helper signatures with flag argument before
   its set in stone as UAPI, from Joanne Koong.

* https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf:
  bpf: Add flags arg to bpf_dynptr_read and bpf_dynptr_write APIs
  bpf: Make sure mac_header was set before using it
  xdp: Fix spurious packet loss in generic XDP TX path
====================

Link: https://lore.kernel.org/r/20220708213418.19626-1-daniel@iogearbox.net
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2022-07-08 15:24:16 -07:00